source4/ntvfs/ipc/vfs_ipc.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    default IPC$ NTVFS backend
   4
   5    Copyright (C) Andrew Tridgell 2003
   6    Copyright (C) Stefan (metze) Metzmacher 2004-2005
   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   this implements the IPC$ backend, called by the NTVFS subsystem to
  23   handle requests on IPC$ shares
  24 */
  25
  26
  27 #include "includes.h"
  28 #include "../lib/util/dlinklist.h"
  29 #include "ntvfs/ntvfs.h"
  30 #include "../librpc/gen_ndr/rap.h"
  31 #include "ntvfs/ipc/proto.h"
  32 #include "libcli/raw/ioctl.h"
  33 #include "param/param.h"
  34 #include "../lib/tsocket/tsocket.h"
  35 #include "../libcli/named_pipe_auth/npa_tstream.h"
  36 #include "auth/auth.h"
  37 #include "auth/auth_sam_reply.h"
  38 #include "lib/socket/socket.h"
  39 #include "auth/credentials/credentials.h"
  40 #include "auth/credentials/credentials_krb5.h"
  41 #include <gssapi/gssapi.h>
  42 #include "system/locale.h"
  43
  44 /* this is the private structure used to keep the state of an open
  45    ipc$ connection. It needs to keep information about all open
  46    pipes */
  47 struct ipc_private {
  48         struct ntvfs_module_context *ntvfs;
  49
  50         /* a list of open pipes */
  51         struct pipe_state {
  52                 struct pipe_state *next, *prev;
  53                 struct ipc_private *ipriv;
  54                 const char *pipe_name;
  55                 struct ntvfs_handle *handle;
  56                 struct tstream_context *npipe;
  57                 uint16_t file_type;
  58                 uint16_t device_state;
  59                 uint64_t allocation_size;
  60                 struct tevent_queue *write_queue;
  61                 struct tevent_queue *read_queue;
  62         } *pipe_list;
  63 };
  64
  65
  66 /*
  67   find a open pipe give a file handle
  68 */
  69 static struct pipe_state *pipe_state_find(struct ipc_private *ipriv, struct ntvfs_handle *handle)
  70 {
  71         struct pipe_state *s;
  72         void *p;
  73
  74         p = ntvfs_handle_get_backend_data(handle, ipriv->ntvfs);
  75         if (!p) return NULL;
  76
  77         s = talloc_get_type(p, struct pipe_state);
  78         if (!s) return NULL;
  79
  80         return s;
  81 }
  82
  83 /*
  84   find a open pipe give a wire fnum
  85 */
  86 static struct pipe_state *pipe_state_find_key(struct ipc_private *ipriv, struct ntvfs_request *req, const DATA_BLOB *key)
  87 {
  88         struct ntvfs_handle *h;
  89
  90         h = ntvfs_handle_search_by_wire_key(ipriv->ntvfs, req, key);
  91         if (!h) return NULL;
  92
  93         return pipe_state_find(ipriv, h);
  94 }
  95
  96
  97 /*
  98   connect to a share - always works
  99 */
 100 static NTSTATUS ipc_connect(struct ntvfs_module_context *ntvfs,
 101                             struct ntvfs_request *req,
 102                             union smb_tcon* tcon)
 103 {
 104         struct ipc_private *ipriv;
 105         const char *sharename;
 106
 107         switch (tcon->generic.level) {
 108         case RAW_TCON_TCON:
 109                 sharename = tcon->tcon.in.service;
 110                 break;
 111         case RAW_TCON_TCONX:
 112                 sharename = tcon->tconx.in.path;
 113                 break;
 114         case RAW_TCON_SMB2:
 115                 sharename = tcon->smb2.in.path;
 116                 break;
 117         default:
 118                 return NT_STATUS_INVALID_LEVEL;
 119         }
 120
 121         if (strncmp(sharename, "\\\\", 2) == 0) {
 122                 char *p = strchr(sharename+2, '\\');
 123                 if (p) {
 124                         sharename = p + 1;
 125                 }
 126         }
 127
 128         ntvfs->ctx->fs_type = talloc_strdup(ntvfs->ctx, "IPC");
 129         NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->fs_type);
 130
 131         ntvfs->ctx->dev_type = talloc_strdup(ntvfs->ctx, "IPC");
 132         NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->dev_type);
 133
 134         if (tcon->generic.level == RAW_TCON_TCONX) {
 135                 tcon->tconx.out.fs_type = ntvfs->ctx->fs_type;
 136                 tcon->tconx.out.dev_type = ntvfs->ctx->dev_type;
 137         }
 138
 139         /* prepare the private state for this connection */
 140         ipriv = talloc(ntvfs, struct ipc_private);
 141         NT_STATUS_HAVE_NO_MEMORY(ipriv);
 142
 143         ntvfs->private_data = ipriv;
 144
 145         ipriv->ntvfs = ntvfs;
 146         ipriv->pipe_list = NULL;
 147
 148         return NT_STATUS_OK;
 149 }
 150
 151 /*
 152   disconnect from a share
 153 */
 154 static NTSTATUS ipc_disconnect(struct ntvfs_module_context *ntvfs)
 155 {
 156         return NT_STATUS_OK;
 157 }
 158
 159 /*
 160   delete a file
 161 */
 162 static NTSTATUS ipc_unlink(struct ntvfs_module_context *ntvfs,
 163                            struct ntvfs_request *req,
 164                            union smb_unlink *unl)
 165 {
 166         return NT_STATUS_ACCESS_DENIED;
 167 }
 168
 169 /*
 170   check if a directory exists
 171 */
 172 static NTSTATUS ipc_chkpath(struct ntvfs_module_context *ntvfs,
 173                             struct ntvfs_request *req,
 174                             union smb_chkpath *cp)
 175 {
 176         return NT_STATUS_ACCESS_DENIED;
 177 }
 178
 179 /*
 180   return info on a pathname
 181 */
 182 static NTSTATUS ipc_qpathinfo(struct ntvfs_module_context *ntvfs,
 183                               struct ntvfs_request *req, union smb_fileinfo *info)
 184 {
 185         switch (info->generic.level) {
 186         case  RAW_FILEINFO_GENERIC:
 187                 return NT_STATUS_INVALID_DEVICE_REQUEST;
 188         case RAW_FILEINFO_GETATTR:
 189                 return NT_STATUS_ACCESS_DENIED;
 190         default:
 191                 return ntvfs_map_qpathinfo(ntvfs, req, info);
 192         }
 193 }
 194
 195 /*
 196   set info on a pathname
 197 */
 198 static NTSTATUS ipc_setpathinfo(struct ntvfs_module_context *ntvfs,
 199                                 struct ntvfs_request *req, union smb_setfileinfo *st)
 200 {
 201         return NT_STATUS_ACCESS_DENIED;
 202 }
 203
 204
 205 /*
 206   destroy a open pipe structure
 207 */
 208 static int ipc_fd_destructor(struct pipe_state *p)
 209 {
 210         DLIST_REMOVE(p->ipriv->pipe_list, p);
 211         ntvfs_handle_remove_backend_data(p->handle, p->ipriv->ntvfs);
 212         return 0;
 213 }
 214
 215 struct ipc_open_state {
 216         struct ipc_private *ipriv;
 217         struct pipe_state *p;
 218         struct ntvfs_request *req;
 219         union smb_open *oi;
 220         struct netr_SamInfo3 *info3;
 221 };
 222
 223 static void ipc_open_done(struct tevent_req *subreq);
 224
 225 /*
 226   check the pipename is valid
 227  */
 228 static NTSTATUS validate_pipename(const char *name)
 229 {
 230         while (*name) {
 231                 if (!isalnum(*name) && *name != '_') {
 232                         return NT_STATUS_INVALID_PARAMETER;
 233                 }
 234                 name++;
 235         }
 236         return NT_STATUS_OK;
 237 }
 238
 239 /*
 240   open a file - used for MSRPC pipes
 241 */
 242 static NTSTATUS ipc_open(struct ntvfs_module_context *ntvfs,
 243                          struct ntvfs_request *req, union smb_open *oi)
 244 {
 245         NTSTATUS status;
 246         struct pipe_state *p;
 247         struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
 248                                     struct ipc_private);
 249         struct ntvfs_handle *h;
 250         struct ipc_open_state *state;
 251         struct tevent_req *subreq;
 252         const char *fname;
 253         const char *directory;
 254         const struct tsocket_address *client_addr;
 255         const struct tsocket_address *server_addr;
 256         int ret;
 257         DATA_BLOB delegated_creds = data_blob_null;
 258
 259         switch (oi->generic.level) {
 260         case RAW_OPEN_NTCREATEX:
 261         case RAW_OPEN_NTTRANS_CREATE:
 262                 fname = oi->ntcreatex.in.fname;
 263                 break;
 264         case RAW_OPEN_OPENX:
 265                 fname = oi->openx.in.fname;
 266                 break;
 267         case RAW_OPEN_SMB2:
 268                 fname = oi->smb2.in.fname;
 269                 break;
 270         default:
 271                 return NT_STATUS_NOT_SUPPORTED;
 272         }
 273
 274         directory = talloc_asprintf(req, "%s/np",
 275                                     lpcfg_ncalrpc_dir(ipriv->ntvfs->ctx->lp_ctx));
 276         NT_STATUS_HAVE_NO_MEMORY(directory);
 277
 278         state = talloc(req, struct ipc_open_state);
 279         NT_STATUS_HAVE_NO_MEMORY(state);
 280
 281         status = ntvfs_handle_new(ntvfs, req, &h);
 282         NT_STATUS_NOT_OK_RETURN(status);
 283
 284         p = talloc(h, struct pipe_state);
 285         NT_STATUS_HAVE_NO_MEMORY(p);
 286
 287         while (fname[0] == '\\') fname++;
 288
 289         /* check for valid characters in name */
 290         fname = strlower_talloc(p, fname);
 291
 292         status = validate_pipename(fname);
 293         NT_STATUS_NOT_OK_RETURN(status);
 294
 295         p->pipe_name = talloc_asprintf(p, "\\pipe\\%s", fname);
 296         NT_STATUS_HAVE_NO_MEMORY(p->pipe_name);
 297
 298         p->handle = h;
 299         p->ipriv = ipriv;
 300
 301         p->write_queue = tevent_queue_create(p, "ipc_write_queue");
 302         NT_STATUS_HAVE_NO_MEMORY(p->write_queue);
 303
 304         p->read_queue = tevent_queue_create(p, "ipc_read_queue");
 305         NT_STATUS_HAVE_NO_MEMORY(p->read_queue);
 306
 307         state->ipriv = ipriv;
 308         state->p = p;
 309         state->req = req;
 310         state->oi = oi;
 311
 312         status = auth_convert_server_info_saminfo3(state,
 313                                                    req->session_info->server_info,
 314                                                    &state->info3);
 315         NT_STATUS_NOT_OK_RETURN(status);
 316
 317         client_addr = ntvfs_get_local_address(ipriv->ntvfs);
 318         server_addr = ntvfs_get_remote_address(ipriv->ntvfs);
 319
 320         if (req->session_info->credentials) {
 321                 struct gssapi_creds_container *gcc;
 322                 OM_uint32 gret;
 323                 OM_uint32 minor_status;
 324                 gss_buffer_desc cred_token;
 325                 const char *error_string;
 326
 327                 ret = cli_credentials_get_client_gss_creds(req->session_info->credentials,
 328                                                            ipriv->ntvfs->ctx->event_ctx,
 329                                                            ipriv->ntvfs->ctx->lp_ctx,
 330                                                            &gcc, &error_string);
 331                 if (ret) {
 332                         goto skip;
 333                 }
 334
 335                 gret = gss_export_cred(&minor_status,
 336                                        gcc->creds,
 337                                        &cred_token);
 338                 if (gret != GSS_S_COMPLETE) {
 339                         return NT_STATUS_INTERNAL_ERROR;
 340                 }
 341
 342                 if (cred_token.length) {
 343                         delegated_creds = data_blob_talloc(req,
 344                                                            cred_token.value,
 345                                                            cred_token.length);
 346                         gss_release_buffer(&minor_status, &cred_token);
 347                         NT_STATUS_HAVE_NO_MEMORY(delegated_creds.data);
 348                 }
 349         }
 350
 351 skip:
 352
 353         subreq = tstream_npa_connect_send(p,
 354                                           ipriv->ntvfs->ctx->event_ctx,
 355                                           directory,
 356                                           fname,
 357                                           client_addr,
 358                                           NULL,
 359                                           server_addr,
 360                                           NULL,
 361                                           state->info3,
 362                                           req->session_info->session_key,
 363                                           delegated_creds);
 364         NT_STATUS_HAVE_NO_MEMORY(subreq);
 365         tevent_req_set_callback(subreq, ipc_open_done, state);
 366
 367         req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC;
 368         return NT_STATUS_OK;
 369 }
 370
 371 static void ipc_open_done(struct tevent_req *subreq)
 372 {
 373         struct ipc_open_state *state = tevent_req_callback_data(subreq,
 374                                        struct ipc_open_state);
 375         struct ipc_private *ipriv = state->ipriv;
 376         struct pipe_state *p = state->p;
 377         struct ntvfs_request *req = state->req;
 378         union smb_open *oi = state->oi;
 379         int ret;
 380         int sys_errno;
 381         NTSTATUS status;
 382
 383         ret = tstream_npa_connect_recv(subreq, &sys_errno,
 384                                        p, &p->npipe,
 385                                        &p->file_type,
 386                                        &p->device_state,
 387                                        &p->allocation_size);
 388         TALLOC_FREE(subreq);
 389         if (ret == -1) {
 390                 status = map_nt_error_from_unix(sys_errno);
 391                 goto reply;
 392         }
 393
 394         DLIST_ADD(ipriv->pipe_list, p);
 395         talloc_set_destructor(p, ipc_fd_destructor);
 396
 397         status = ntvfs_handle_set_backend_data(p->handle, ipriv->ntvfs, p);
 398         if (!NT_STATUS_IS_OK(status)) {
 399                 goto reply;
 400         }
 401
 402         switch (oi->generic.level) {
 403         case RAW_OPEN_NTCREATEX:
 404                 ZERO_STRUCT(oi->ntcreatex.out);
 405                 oi->ntcreatex.out.file.ntvfs    = p->handle;
 406                 oi->ntcreatex.out.oplock_level  = 0;
 407                 oi->ntcreatex.out.create_action = NTCREATEX_ACTION_EXISTED;
 408                 oi->ntcreatex.out.create_time   = 0;
 409                 oi->ntcreatex.out.access_time   = 0;
 410                 oi->ntcreatex.out.write_time    = 0;
 411                 oi->ntcreatex.out.change_time   = 0;
 412                 oi->ntcreatex.out.attrib        = FILE_ATTRIBUTE_NORMAL;
 413                 oi->ntcreatex.out.alloc_size    = p->allocation_size;
 414                 oi->ntcreatex.out.size          = 0;
 415                 oi->ntcreatex.out.file_type     = p->file_type;
 416                 oi->ntcreatex.out.ipc_state     = p->device_state;
 417                 oi->ntcreatex.out.is_directory  = 0;
 418                 break;
 419         case RAW_OPEN_OPENX:
 420                 ZERO_STRUCT(oi->openx.out);
 421                 oi->openx.out.file.ntvfs        = p->handle;
 422                 oi->openx.out.attrib            = FILE_ATTRIBUTE_NORMAL;
 423                 oi->openx.out.write_time        = 0;
 424                 oi->openx.out.size              = 0;
 425                 oi->openx.out.access            = 0;
 426                 oi->openx.out.ftype             = p->file_type;
 427                 oi->openx.out.devstate          = p->device_state;
 428                 oi->openx.out.action            = 0;
 429                 oi->openx.out.unique_fid        = 0;
 430                 oi->openx.out.access_mask       = 0;
 431                 oi->openx.out.unknown           = 0;
 432                 break;
 433         case RAW_OPEN_SMB2:
 434                 ZERO_STRUCT(oi->smb2.out);
 435                 oi->smb2.out.file.ntvfs         = p->handle;
 436                 oi->smb2.out.oplock_level       = oi->smb2.in.oplock_level;
 437                 oi->smb2.out.create_action      = NTCREATEX_ACTION_EXISTED;
 438                 oi->smb2.out.create_time        = 0;
 439                 oi->smb2.out.access_time        = 0;
 440                 oi->smb2.out.write_time         = 0;
 441                 oi->smb2.out.change_time        = 0;
 442                 oi->smb2.out.alloc_size         = p->allocation_size;
 443                 oi->smb2.out.size               = 0;
 444                 oi->smb2.out.file_attr          = FILE_ATTRIBUTE_NORMAL;
 445                 oi->smb2.out.reserved2          = 0;
 446                 break;
 447         default:
 448                 break;
 449         }
 450
 451 reply:
 452         req->async_states->status = status;
 453         req->async_states->send_fn(req);
 454 }
 455
 456 /*
 457   create a directory
 458 */
 459 static NTSTATUS ipc_mkdir(struct ntvfs_module_context *ntvfs,
 460                           struct ntvfs_request *req, union smb_mkdir *md)
 461 {
 462         return NT_STATUS_ACCESS_DENIED;
 463 }
 464
 465 /*
 466   remove a directory
 467 */
 468 static NTSTATUS ipc_rmdir(struct ntvfs_module_context *ntvfs,
 469                           struct ntvfs_request *req, struct smb_rmdir *rd)
 470 {
 471         return NT_STATUS_ACCESS_DENIED;
 472 }
 473
 474 /*
 475   rename a set of files
 476 */
 477 static NTSTATUS ipc_rename(struct ntvfs_module_context *ntvfs,
 478                            struct ntvfs_request *req, union smb_rename *ren)
 479 {
 480         return NT_STATUS_ACCESS_DENIED;
 481 }
 482
 483 /*
 484   copy a set of files
 485 */
 486 static NTSTATUS ipc_copy(struct ntvfs_module_context *ntvfs,
 487                          struct ntvfs_request *req, struct smb_copy *cp)
 488 {
 489         return NT_STATUS_ACCESS_DENIED;
 490 }
 491
 492 struct ipc_readv_next_vector_state {
 493         uint8_t *buf;
 494         size_t len;
 495         off_t ofs;
 496         size_t remaining;
 497 };
 498
 499 static void ipc_readv_next_vector_init(struct ipc_readv_next_vector_state *s,
 500                                        uint8_t *buf, size_t len)
 501 {
 502         ZERO_STRUCTP(s);
 503
 504         s->buf = buf;
 505         s->len = MIN(len, UINT16_MAX);
 506 }
 507
 508 static int ipc_readv_next_vector(struct tstream_context *stream,
 509                                  void *private_data,
 510                                  TALLOC_CTX *mem_ctx,
 511                                  struct iovec **_vector,
 512                                  size_t *count)
 513 {
 514         struct ipc_readv_next_vector_state *state =
 515                 (struct ipc_readv_next_vector_state *)private_data;
 516         struct iovec *vector;
 517         ssize_t pending;
 518         size_t wanted;
 519
 520         if (state->ofs == state->len) {
 521                 *_vector = NULL;
 522                 *count = 0;
 523                 return 0;
 524         }
 525
 526         pending = tstream_pending_bytes(stream);
 527         if (pending == -1) {
 528                 return -1;
 529         }
 530
 531         if (pending == 0 && state->ofs != 0) {
 532                 /* return a short read */
 533                 *_vector = NULL;
 534                 *count = 0;
 535                 return 0;
 536         }
 537
 538         if (pending == 0) {
 539                 /* we want at least one byte and recheck again */
 540                 wanted = 1;
 541         } else {
 542                 size_t missing = state->len - state->ofs;
 543                 if (pending > missing) {
 544                         /* there's more available */
 545                         state->remaining = pending - missing;
 546                         wanted = missing;
 547                 } else {
 548                         /* read what we can get and recheck in the next cycle */
 549                         wanted = pending;
 550                 }
 551         }
 552
 553         vector = talloc_array(mem_ctx, struct iovec, 1);
 554         if (!vector) {
 555                 return -1;
 556         }
 557
 558         vector[0].iov_base = (char *) (state->buf + state->ofs);
 559         vector[0].iov_len = wanted;
 560
 561         state->ofs += wanted;
 562
 563         *_vector = vector;
 564         *count = 1;
 565         return 0;
 566 }
 567
 568 struct ipc_read_state {
 569         struct ipc_private *ipriv;
 570         struct pipe_state *p;
 571         struct ntvfs_request *req;
 572         union smb_read *rd;
 573         struct ipc_readv_next_vector_state next_vector;
 574 };
 575
 576 static void ipc_read_done(struct tevent_req *subreq);
 577
 578 /*
 579   read from a file
 580 */
 581 static NTSTATUS ipc_read(struct ntvfs_module_context *ntvfs,
 582                          struct ntvfs_request *req, union smb_read *rd)
 583 {
 584         struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
 585                                     struct ipc_private);
 586         struct pipe_state *p;
 587         struct ipc_read_state *state;
 588         struct tevent_req *subreq;
 589
 590         if (rd->generic.level != RAW_READ_GENERIC) {
 591                 return ntvfs_map_read(ntvfs, req, rd);
 592         }
 593
 594         p = pipe_state_find(ipriv, rd->readx.in.file.ntvfs);
 595         if (!p) {
 596                 return NT_STATUS_INVALID_HANDLE;
 597         }
 598
 599         state = talloc(req, struct ipc_read_state);
 600         NT_STATUS_HAVE_NO_MEMORY(state);
 601
 602         state->ipriv = ipriv;
 603         state->p = p;
 604         state->req = req;
 605         state->rd = rd;
 606
 607         /* rd->readx.out.data is already allocated */
 608         ipc_readv_next_vector_init(&state->next_vector,
 609                                    rd->readx.out.data,
 610                                    rd->readx.in.maxcnt);
 611
 612         subreq = tstream_readv_pdu_queue_send(req,
 613                                               ipriv->ntvfs->ctx->event_ctx,
 614                                               p->npipe,
 615                                               p->read_queue,
 616                                               ipc_readv_next_vector,
 617                                               &state->next_vector);
 618         NT_STATUS_HAVE_NO_MEMORY(subreq);
 619         tevent_req_set_callback(subreq, ipc_read_done, state);
 620
 621         req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC;
 622         return NT_STATUS_OK;
 623 }
 624
 625 static void ipc_read_done(struct tevent_req *subreq)
 626 {
 627         struct ipc_read_state *state =
 628                 tevent_req_callback_data(subreq,
 629                 struct ipc_read_state);
 630         struct ntvfs_request *req = state->req;
 631         union smb_read *rd = state->rd;
 632         int ret;
 633         int sys_errno;
 634         NTSTATUS status;
 635
 636         ret = tstream_readv_pdu_queue_recv(subreq, &sys_errno);
 637         TALLOC_FREE(subreq);
 638         if (ret == -1) {
 639                 status = map_nt_error_from_unix(sys_errno);
 640                 goto reply;
 641         }
 642
 643         status = NT_STATUS_OK;
 644         if (state->next_vector.remaining > 0) {
 645                 status = STATUS_BUFFER_OVERFLOW;
 646         }
 647
 648         rd->readx.out.remaining = state->next_vector.remaining;
 649         rd->readx.out.compaction_mode = 0;
 650         rd->readx.out.nread = ret;
 651
 652 reply:
 653         req->async_states->status = status;
 654         req->async_states->send_fn(req);
 655 }
 656
 657 struct ipc_write_state {
 658         struct ipc_private *ipriv;
 659         struct pipe_state *p;
 660         struct ntvfs_request *req;
 661         union smb_write *wr;
 662         struct iovec iov;
 663 };
 664
 665 static void ipc_write_done(struct tevent_req *subreq);
 666
 667 /*
 668   write to a file
 669 */
 670 static NTSTATUS ipc_write(struct ntvfs_module_context *ntvfs,
 671                           struct ntvfs_request *req, union smb_write *wr)
 672 {
 673         struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
 674                                     struct ipc_private);
 675         struct pipe_state *p;
 676         struct tevent_req *subreq;
 677         struct ipc_write_state *state;
 678
 679         if (wr->generic.level != RAW_WRITE_GENERIC) {
 680                 return ntvfs_map_write(ntvfs, req, wr);
 681         }
 682
 683         p = pipe_state_find(ipriv, wr->writex.in.file.ntvfs);
 684         if (!p) {
 685                 return NT_STATUS_INVALID_HANDLE;
 686         }
 687
 688         state = talloc(req, struct ipc_write_state);
 689         NT_STATUS_HAVE_NO_MEMORY(state);
 690
 691         state->ipriv = ipriv;
 692         state->p = p;
 693         state->req = req;
 694         state->wr = wr;
 695         state->iov.iov_base = discard_const_p(void, wr->writex.in.data);
 696         state->iov.iov_len = wr->writex.in.count;
 697
 698         subreq = tstream_writev_queue_send(state,
 699                                            ipriv->ntvfs->ctx->event_ctx,
 700                                            p->npipe,
 701                                            p->write_queue,
 702                                            &state->iov, 1);
 703         NT_STATUS_HAVE_NO_MEMORY(subreq);
 704         tevent_req_set_callback(subreq, ipc_write_done, state);
 705
 706         req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC;
 707         return NT_STATUS_OK;
 708 }
 709
 710 static void ipc_write_done(struct tevent_req *subreq)
 711 {
 712         struct ipc_write_state *state =
 713                 tevent_req_callback_data(subreq,
 714                 struct ipc_write_state);
 715         struct ntvfs_request *req = state->req;
 716         union smb_write *wr = state->wr;
 717         int ret;
 718         int sys_errno;
 719         NTSTATUS status;
 720
 721         ret = tstream_writev_queue_recv(subreq, &sys_errno);
 722         TALLOC_FREE(subreq);
 723         if (ret == -1) {
 724                 status = map_nt_error_from_unix(sys_errno);
 725                 goto reply;
 726         }
 727
 728         status = NT_STATUS_OK;
 729
 730         wr->writex.out.nwritten = ret;
 731         wr->writex.out.remaining = 0;
 732
 733 reply:
 734         req->async_states->status = status;
 735         req->async_states->send_fn(req);
 736 }
 737
 738 /*
 739   seek in a file
 740 */
 741 static NTSTATUS ipc_seek(struct ntvfs_module_context *ntvfs,
 742                          struct ntvfs_request *req,
 743                          union smb_seek *io)
 744 {
 745         return NT_STATUS_ACCESS_DENIED;
 746 }
 747
 748 /*
 749   flush a file
 750 */
 751 static NTSTATUS ipc_flush(struct ntvfs_module_context *ntvfs,
 752                           struct ntvfs_request *req,
 753                           union smb_flush *io)
 754 {
 755         return NT_STATUS_ACCESS_DENIED;
 756 }
 757
 758 /*
 759   close a file
 760 */
 761 static NTSTATUS ipc_close(struct ntvfs_module_context *ntvfs,
 762                           struct ntvfs_request *req, union smb_close *io)
 763 {
 764         struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
 765                                     struct ipc_private);
 766         struct pipe_state *p;
 767
 768         if (io->generic.level != RAW_CLOSE_CLOSE) {
 769                 return ntvfs_map_close(ntvfs, req, io);
 770         }
 771
 772         p = pipe_state_find(ipriv, io->close.in.file.ntvfs);
 773         if (!p) {
 774                 return NT_STATUS_INVALID_HANDLE;
 775         }
 776
 777         talloc_free(p);
 778
 779         return NT_STATUS_OK;
 780 }
 781
 782 /*
 783   exit - closing files
 784 */
 785 static NTSTATUS ipc_exit(struct ntvfs_module_context *ntvfs,
 786                          struct ntvfs_request *req)
 787 {
 788         struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
 789                                     struct ipc_private);
 790         struct pipe_state *p, *next;
 791
 792         for (p=ipriv->pipe_list; p; p=next) {
 793                 next = p->next;
 794                 if (p->handle->session_info == req->session_info &&
 795                     p->handle->smbpid == req->smbpid) {
 796                         talloc_free(p);
 797                 }
 798         }
 799
 800         return NT_STATUS_OK;
 801 }
 802
 803 /*
 804   logoff - closing files open by the user
 805 */
 806 static NTSTATUS ipc_logoff(struct ntvfs_module_context *ntvfs,
 807                            struct ntvfs_request *req)
 808 {
 809         struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
 810                                     struct ipc_private);
 811         struct pipe_state *p, *next;
 812
 813         for (p=ipriv->pipe_list; p; p=next) {
 814                 next = p->next;
 815                 if (p->handle->session_info == req->session_info) {
 816                         talloc_free(p);
 817                 }
 818         }
 819
 820         return NT_STATUS_OK;
 821 }
 822
 823 /*
 824   setup for an async call
 825 */
 826 static NTSTATUS ipc_async_setup(struct ntvfs_module_context *ntvfs,
 827                                 struct ntvfs_request *req,
 828                                 void *private_data)
 829 {
 830         return NT_STATUS_OK;
 831 }
 832
 833 /*
 834   cancel an async call
 835 */
 836 static NTSTATUS ipc_cancel(struct ntvfs_module_context *ntvfs,
 837                            struct ntvfs_request *req)
 838 {
 839         return NT_STATUS_UNSUCCESSFUL;
 840 }
 841
 842 /*
 843   lock a byte range
 844 */
 845 static NTSTATUS ipc_lock(struct ntvfs_module_context *ntvfs,
 846                          struct ntvfs_request *req, union smb_lock *lck)
 847 {
 848         return NT_STATUS_ACCESS_DENIED;
 849 }
 850
 851 /*
 852   set info on a open file
 853 */
 854 static NTSTATUS ipc_setfileinfo(struct ntvfs_module_context *ntvfs,
 855                                 struct ntvfs_request *req, union smb_setfileinfo *info)
 856 {
 857         return NT_STATUS_ACCESS_DENIED;
 858 }
 859
 860 /*
 861   query info on a open file
 862 */
 863 static NTSTATUS ipc_qfileinfo(struct ntvfs_module_context *ntvfs,
 864                               struct ntvfs_request *req, union smb_fileinfo *info)
 865 {
 866         struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
 867                                     struct ipc_private);
 868         struct pipe_state *p = pipe_state_find(ipriv, info->generic.in.file.ntvfs);
 869         if (!p) {
 870                 return NT_STATUS_INVALID_HANDLE;
 871         }
 872         switch (info->generic.level) {
 873         case RAW_FILEINFO_GENERIC:
 874         {
 875                 ZERO_STRUCT(info->generic.out);
 876                 info->generic.out.attrib = FILE_ATTRIBUTE_NORMAL;
 877                 info->generic.out.fname.s = strrchr(p->pipe_name, '\\');
 878                 info->generic.out.alloc_size = 4096;
 879                 info->generic.out.nlink = 1;
 880                 /* What the heck?  Match Win2k3: IPC$ pipes are delete pending */
 881                 info->generic.out.delete_pending = 1;
 882                 return NT_STATUS_OK;
 883         }
 884         case RAW_FILEINFO_ALT_NAME_INFO:
 885         case RAW_FILEINFO_ALT_NAME_INFORMATION:
 886         case RAW_FILEINFO_STREAM_INFO:
 887         case RAW_FILEINFO_STREAM_INFORMATION:
 888         case RAW_FILEINFO_COMPRESSION_INFO:
 889         case RAW_FILEINFO_COMPRESSION_INFORMATION:
 890         case RAW_FILEINFO_NETWORK_OPEN_INFORMATION:
 891         case RAW_FILEINFO_ATTRIBUTE_TAG_INFORMATION:
 892                 return NT_STATUS_INVALID_PARAMETER;
 893         case  RAW_FILEINFO_ALL_EAS:
 894                 return NT_STATUS_ACCESS_DENIED;
 895         default:
 896                 return ntvfs_map_qfileinfo(ntvfs, req, info);
 897         }
 898 }
 899
 900
 901 /*
 902   return filesystem info
 903 */
 904 static NTSTATUS ipc_fsinfo(struct ntvfs_module_context *ntvfs,
 905                            struct ntvfs_request *req, union smb_fsinfo *fs)
 906 {
 907         return NT_STATUS_ACCESS_DENIED;
 908 }
 909
 910 /*
 911   return print queue info
 912 */
 913 static NTSTATUS ipc_lpq(struct ntvfs_module_context *ntvfs,
 914                         struct ntvfs_request *req, union smb_lpq *lpq)
 915 {
 916         return NT_STATUS_ACCESS_DENIED;
 917 }
 918
 919 /*
 920    list files in a directory matching a wildcard pattern
 921 */
 922 static NTSTATUS ipc_search_first(struct ntvfs_module_context *ntvfs,
 923                           struct ntvfs_request *req, union smb_search_first *io,
 924                           void *search_private,
 925                           bool (*callback)(void *, const union smb_search_data *))
 926 {
 927         return NT_STATUS_ACCESS_DENIED;
 928 }
 929
 930 /*
 931    continue listing files in a directory
 932 */
 933 static NTSTATUS ipc_search_next(struct ntvfs_module_context *ntvfs,
 934                          struct ntvfs_request *req, union smb_search_next *io,
 935                          void *search_private,
 936                          bool (*callback)(void *, const union smb_search_data *))
 937 {
 938         return NT_STATUS_ACCESS_DENIED;
 939 }
 940
 941 /*
 942    end listing files in a directory
 943 */
 944 static NTSTATUS ipc_search_close(struct ntvfs_module_context *ntvfs,
 945                           struct ntvfs_request *req, union smb_search_close *io)
 946 {
 947         return NT_STATUS_ACCESS_DENIED;
 948 }
 949
 950 struct ipc_trans_state {
 951         struct ipc_private *ipriv;
 952         struct pipe_state *p;
 953         struct ntvfs_request *req;
 954         struct smb_trans2 *trans;
 955         struct iovec writev_iov;
 956         struct ipc_readv_next_vector_state next_vector;
 957 };
 958
 959 static void ipc_trans_writev_done(struct tevent_req *subreq);
 960 static void ipc_trans_readv_done(struct tevent_req *subreq);
 961
 962 /* SMBtrans - handle a DCERPC command */
 963 static NTSTATUS ipc_dcerpc_cmd(struct ntvfs_module_context *ntvfs,
 964                                struct ntvfs_request *req, struct smb_trans2 *trans)
 965 {
 966         struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
 967                                     struct ipc_private);
 968         struct pipe_state *p;
 969         DATA_BLOB fnum_key;
 970         uint16_t fnum;
 971         struct ipc_trans_state *state;
 972         struct tevent_req *subreq;
 973
 974         /*
 975          * the fnum is in setup[1], a 16 bit value
 976          * the setup[*] values are already in host byteorder
 977          * but ntvfs_handle_search_by_wire_key() expects
 978          * network byteorder
 979          */
 980         SSVAL(&fnum, 0, trans->in.setup[1]);
 981         fnum_key = data_blob_const(&fnum, 2);
 982
 983         p = pipe_state_find_key(ipriv, req, &fnum_key);
 984         if (!p) {
 985                 return NT_STATUS_INVALID_HANDLE;
 986         }
 987
 988         /*
 989          * Trans requests are only allowed
 990          * if no other Trans or Read is active
 991          */
 992         if (tevent_queue_length(p->read_queue) > 0) {
 993                 return NT_STATUS_PIPE_BUSY;
 994         }
 995
 996         state = talloc(req, struct ipc_trans_state);
 997         NT_STATUS_HAVE_NO_MEMORY(state);
 998
 999         trans->out.setup_count = 0;
1000         trans->out.setup = NULL;
1001         trans->out.params = data_blob(NULL, 0);
1002         trans->out.data = data_blob_talloc(req, NULL, trans->in.max_data);
1003         NT_STATUS_HAVE_NO_MEMORY(trans->out.data.data);
1004
1005         state->ipriv = ipriv;
1006         state->p = p;
1007         state->req = req;
1008         state->trans = trans;
1009         state->writev_iov.iov_base = (char *) trans->in.data.data;
1010         state->writev_iov.iov_len = trans->in.data.length;
1011
1012         ipc_readv_next_vector_init(&state->next_vector,
1013                                    trans->out.data.data,
1014                                    trans->out.data.length);
1015
1016         subreq = tstream_writev_queue_send(state,
1017                                            ipriv->ntvfs->ctx->event_ctx,
1018                                            p->npipe,
1019                                            p->write_queue,
1020                                            &state->writev_iov, 1);
1021         NT_STATUS_HAVE_NO_MEMORY(subreq);
1022         tevent_req_set_callback(subreq, ipc_trans_writev_done, state);
1023
1024         req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC;
1025         return NT_STATUS_OK;
1026 }
1027
1028 static void ipc_trans_writev_done(struct tevent_req *subreq)
1029 {
1030         struct ipc_trans_state *state =
1031                 tevent_req_callback_data(subreq,
1032                 struct ipc_trans_state);
1033         struct ipc_private *ipriv = state->ipriv;
1034         struct pipe_state *p = state->p;
1035         struct ntvfs_request *req = state->req;
1036         int ret;
1037         int sys_errno;
1038         NTSTATUS status;
1039
1040         ret = tstream_writev_queue_recv(subreq, &sys_errno);
1041         TALLOC_FREE(subreq);
1042         if (ret == 0) {
1043                 status = NT_STATUS_PIPE_DISCONNECTED;
1044                 goto reply;
1045         } else if (ret == -1) {
1046                 status = map_nt_error_from_unix(sys_errno);
1047                 goto reply;
1048         }
1049
1050         subreq = tstream_readv_pdu_queue_send(state,
1051                                               ipriv->ntvfs->ctx->event_ctx,
1052                                               p->npipe,
1053                                               p->read_queue,
1054                                               ipc_readv_next_vector,
1055                                               &state->next_vector);
1056         if (!subreq) {
1057                 status = NT_STATUS_NO_MEMORY;
1058                 goto reply;
1059         }
1060         tevent_req_set_callback(subreq, ipc_trans_readv_done, state);
1061         return;
1062
1063 reply:
1064         req->async_states->status = status;
1065         req->async_states->send_fn(req);
1066 }
1067
1068 static void ipc_trans_readv_done(struct tevent_req *subreq)
1069 {
1070         struct ipc_trans_state *state =
1071                 tevent_req_callback_data(subreq,
1072                 struct ipc_trans_state);
1073         struct ntvfs_request *req = state->req;
1074         struct smb_trans2 *trans = state->trans;
1075         int ret;
1076         int sys_errno;
1077         NTSTATUS status;
1078
1079         ret = tstream_readv_pdu_queue_recv(subreq, &sys_errno);
1080         TALLOC_FREE(subreq);
1081         if (ret == -1) {
1082                 status = map_nt_error_from_unix(sys_errno);
1083                 goto reply;
1084         }
1085
1086         status = NT_STATUS_OK;
1087         if (state->next_vector.remaining > 0) {
1088                 status = STATUS_BUFFER_OVERFLOW;
1089         }
1090
1091         trans->out.data.length = ret;
1092
1093 reply:
1094         req->async_states->status = status;
1095         req->async_states->send_fn(req);
1096 }
1097
1098 /* SMBtrans - set named pipe state */
1099 static NTSTATUS ipc_set_nm_pipe_state(struct ntvfs_module_context *ntvfs,
1100                                       struct ntvfs_request *req, struct smb_trans2 *trans)
1101 {
1102         struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
1103                                     struct ipc_private);
1104         struct pipe_state *p;
1105         DATA_BLOB fnum_key;
1106
1107         /* the fnum is in setup[1] */
1108         fnum_key = data_blob_const(&trans->in.setup[1], sizeof(trans->in.setup[1]));
1109
1110         p = pipe_state_find_key(ipriv, req, &fnum_key);
1111         if (!p) {
1112                 return NT_STATUS_INVALID_HANDLE;
1113         }
1114
1115         if (trans->in.params.length != 2) {
1116                 return NT_STATUS_INVALID_PARAMETER;
1117         }
1118
1119         /*
1120          * TODO: pass this to the tstream_npa logic
1121          */
1122         p->device_state = SVAL(trans->in.params.data, 0);
1123
1124         trans->out.setup_count = 0;
1125         trans->out.setup = NULL;
1126         trans->out.params = data_blob(NULL, 0);
1127         trans->out.data = data_blob(NULL, 0);
1128
1129         return NT_STATUS_OK;
1130 }
1131
1132
1133 /* SMBtrans - used to provide access to SMB pipes */
1134 static NTSTATUS ipc_trans(struct ntvfs_module_context *ntvfs,
1135                                 struct ntvfs_request *req, struct smb_trans2 *trans)
1136 {
1137         NTSTATUS status;
1138
1139         if (strequal(trans->in.trans_name, "\\PIPE\\LANMAN"))
1140                 return ipc_rap_call(req, ntvfs->ctx->event_ctx, ntvfs->ctx->lp_ctx, trans);
1141
1142         if (trans->in.setup_count != 2) {
1143                 return NT_STATUS_INVALID_PARAMETER;
1144         }
1145
1146         switch (trans->in.setup[0]) {
1147         case TRANSACT_SETNAMEDPIPEHANDLESTATE:
1148                 status = ipc_set_nm_pipe_state(ntvfs, req, trans);
1149                 break;
1150         case TRANSACT_DCERPCCMD:
1151                 status = ipc_dcerpc_cmd(ntvfs, req, trans);
1152                 break;
1153         default:
1154                 status = NT_STATUS_INVALID_PARAMETER;
1155                 break;
1156         }
1157
1158         return status;
1159 }
1160
1161 struct ipc_ioctl_state {
1162         struct ipc_private *ipriv;
1163         struct pipe_state *p;
1164         struct ntvfs_request *req;
1165         union smb_ioctl *io;
1166         struct iovec writev_iov;
1167         struct ipc_readv_next_vector_state next_vector;
1168 };
1169
1170 static void ipc_ioctl_writev_done(struct tevent_req *subreq);
1171 static void ipc_ioctl_readv_done(struct tevent_req *subreq);
1172
1173 static NTSTATUS ipc_ioctl_smb2(struct ntvfs_module_context *ntvfs,
1174                                struct ntvfs_request *req, union smb_ioctl *io)
1175 {
1176         struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
1177                                     struct ipc_private);
1178         struct pipe_state *p;
1179         struct ipc_ioctl_state *state;
1180         struct tevent_req *subreq;
1181
1182         switch (io->smb2.in.function) {
1183         case FSCTL_NAMED_PIPE_READ_WRITE:
1184                 break;
1185
1186         default:
1187                 return NT_STATUS_FS_DRIVER_REQUIRED;
1188         }
1189
1190         p = pipe_state_find(ipriv, io->smb2.in.file.ntvfs);
1191         if (!p) {
1192                 return NT_STATUS_INVALID_HANDLE;
1193         }
1194
1195         /*
1196          * Trans requests are only allowed
1197          * if no other Trans or Read is active
1198          */
1199         if (tevent_queue_length(p->read_queue) > 0) {
1200                 return NT_STATUS_PIPE_BUSY;
1201         }
1202
1203         state = talloc(req, struct ipc_ioctl_state);
1204         NT_STATUS_HAVE_NO_MEMORY(state);
1205
1206         io->smb2.out._pad       = 0;
1207         io->smb2.out.function   = io->smb2.in.function;
1208         io->smb2.out.unknown2   = 0;
1209         io->smb2.out.unknown3   = 0;
1210         io->smb2.out.in         = io->smb2.in.out;
1211         io->smb2.out.out = data_blob_talloc(req, NULL, io->smb2.in.max_response_size);
1212         NT_STATUS_HAVE_NO_MEMORY(io->smb2.out.out.data);
1213
1214         state->ipriv = ipriv;
1215         state->p = p;
1216         state->req = req;
1217         state->io = io;
1218         state->writev_iov.iov_base = (char *) io->smb2.in.out.data;
1219         state->writev_iov.iov_len = io->smb2.in.out.length;
1220
1221         ipc_readv_next_vector_init(&state->next_vector,
1222                                    io->smb2.out.out.data,
1223                                    io->smb2.out.out.length);
1224
1225         subreq = tstream_writev_queue_send(state,
1226                                            ipriv->ntvfs->ctx->event_ctx,
1227                                            p->npipe,
1228                                            p->write_queue,
1229                                            &state->writev_iov, 1);
1230         NT_STATUS_HAVE_NO_MEMORY(subreq);
1231         tevent_req_set_callback(subreq, ipc_ioctl_writev_done, state);
1232
1233         req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC;
1234         return NT_STATUS_OK;
1235 }
1236
1237 static void ipc_ioctl_writev_done(struct tevent_req *subreq)
1238 {
1239         struct ipc_ioctl_state *state =
1240                 tevent_req_callback_data(subreq,
1241                 struct ipc_ioctl_state);
1242         struct ipc_private *ipriv = state->ipriv;
1243         struct pipe_state *p = state->p;
1244         struct ntvfs_request *req = state->req;
1245         int ret;
1246         int sys_errno;
1247         NTSTATUS status;
1248
1249         ret = tstream_writev_queue_recv(subreq, &sys_errno);
1250         TALLOC_FREE(subreq);
1251         if (ret == -1) {
1252                 status = map_nt_error_from_unix(sys_errno);
1253                 goto reply;
1254         }
1255
1256         subreq = tstream_readv_pdu_queue_send(state,
1257                                               ipriv->ntvfs->ctx->event_ctx,
1258                                               p->npipe,
1259                                               p->read_queue,
1260                                               ipc_readv_next_vector,
1261                                               &state->next_vector);
1262         if (!subreq) {
1263                 status = NT_STATUS_NO_MEMORY;
1264                 goto reply;
1265         }
1266         tevent_req_set_callback(subreq, ipc_ioctl_readv_done, state);
1267         return;
1268
1269 reply:
1270         req->async_states->status = status;
1271         req->async_states->send_fn(req);
1272 }
1273
1274 static void ipc_ioctl_readv_done(struct tevent_req *subreq)
1275 {
1276         struct ipc_ioctl_state *state =
1277                 tevent_req_callback_data(subreq,
1278                 struct ipc_ioctl_state);
1279         struct ntvfs_request *req = state->req;
1280         union smb_ioctl *io = state->io;
1281         int ret;
1282         int sys_errno;
1283         NTSTATUS status;
1284
1285         ret = tstream_readv_pdu_queue_recv(subreq, &sys_errno);
1286         TALLOC_FREE(subreq);
1287         if (ret == -1) {
1288                 status = map_nt_error_from_unix(sys_errno);
1289                 goto reply;
1290         }
1291
1292         status = NT_STATUS_OK;
1293         if (state->next_vector.remaining > 0) {
1294                 status = STATUS_BUFFER_OVERFLOW;
1295         }
1296
1297         io->smb2.out.out.length = ret;
1298
1299 reply:
1300         req->async_states->status = status;
1301         req->async_states->send_fn(req);
1302 }
1303
1304 /*
1305   ioctl interface
1306 */
1307 static NTSTATUS ipc_ioctl(struct ntvfs_module_context *ntvfs,
1308                           struct ntvfs_request *req, union smb_ioctl *io)
1309 {
1310         switch (io->generic.level) {
1311         case RAW_IOCTL_SMB2:
1312                 return ipc_ioctl_smb2(ntvfs, req, io);
1313
1314         case RAW_IOCTL_SMB2_NO_HANDLE:
1315                 return NT_STATUS_FS_DRIVER_REQUIRED;
1316
1317         default:
1318                 return NT_STATUS_ACCESS_DENIED;
1319         }
1320 }
1321
1322
1323 /*
1324   initialialise the IPC backend, registering ourselves with the ntvfs subsystem
1325  */
1326 NTSTATUS ntvfs_ipc_init(void)
1327 {
1328         NTSTATUS ret;
1329         struct ntvfs_ops ops;
1330         NTVFS_CURRENT_CRITICAL_SIZES(vers);
1331
1332         ZERO_STRUCT(ops);
1333
1334         /* fill in the name and type */
1335         ops.name = "default";
1336         ops.type = NTVFS_IPC;
1337
1338         /* fill in all the operations */
1339         ops.connect = ipc_connect;
1340         ops.disconnect = ipc_disconnect;
1341         ops.unlink = ipc_unlink;
1342         ops.chkpath = ipc_chkpath;
1343         ops.qpathinfo = ipc_qpathinfo;
1344         ops.setpathinfo = ipc_setpathinfo;
1345         ops.open = ipc_open;
1346         ops.mkdir = ipc_mkdir;
1347         ops.rmdir = ipc_rmdir;
1348         ops.rename = ipc_rename;
1349         ops.copy = ipc_copy;
1350         ops.ioctl = ipc_ioctl;
1351         ops.read = ipc_read;
1352         ops.write = ipc_write;
1353         ops.seek = ipc_seek;
1354         ops.flush = ipc_flush;
1355         ops.close = ipc_close;
1356         ops.exit = ipc_exit;
1357         ops.lock = ipc_lock;
1358         ops.setfileinfo = ipc_setfileinfo;
1359         ops.qfileinfo = ipc_qfileinfo;
1360         ops.fsinfo = ipc_fsinfo;
1361         ops.lpq = ipc_lpq;
1362         ops.search_first = ipc_search_first;
1363         ops.search_next = ipc_search_next;
1364         ops.search_close = ipc_search_close;
1365         ops.trans = ipc_trans;
1366         ops.logoff = ipc_logoff;
1367         ops.async_setup = ipc_async_setup;
1368         ops.cancel = ipc_cancel;
1369
1370         /* register ourselves with the NTVFS subsystem. */
1371         ret = ntvfs_register(&ops, &vers);
1372
1373         if (!NT_STATUS_IS_OK(ret)) {
1374                 DEBUG(0,("Failed to register IPC backend!\n"));
1375                 return ret;
1376         }
1377
1378         return ret;
1379 }