source/ntvfs/cifs/vfs_cifs.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    CIFS-on-CIFS NTVFS filesystem backend
   5
   6    Copyright (C) Andrew Tridgell 2003
   7    Copyright (C) James J Myers 2003 <myersjj@samba.org>
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22 */
  23 /*
  24   this implements a CIFS->CIFS NTVFS filesystem backend.
  25
  26 */
  27
  28 #include "includes.h"
  29 #include "lib/events/events.h"
  30 #include "libcli/raw/libcliraw.h"
  31 #include "libcli/composite/composite.h"
  32 #include "libcli/smb_composite/smb_composite.h"
  33 #include "smb_server/smb_server.h"
  34 #include "smbd/service_stream.h"
  35
  36 /* this is stored in ntvfs_private */
  37 struct cvfs_private {
  38         struct smbcli_tree *tree;
  39         struct smbcli_transport *transport;
  40         struct smbsrv_tcon *tcon;
  41         BOOL map_generic;
  42 };
  43
  44
  45 /* a structure used to pass information to an async handler */
  46 struct async_info {
  47         struct smbsrv_request *req;
  48         void *parms;
  49 };
  50
  51 #define SETUP_PID private->tree->session->pid = SVAL(req->in.hdr, HDR_PID)
  52
  53 /*
  54   a handler for oplock break events from the server - these need to be passed
  55   along to the client
  56  */
  57 static BOOL oplock_handler(struct smbcli_transport *transport, uint16_t tid, uint16_t fnum, uint8_t level, void *p_private)
  58 {
  59         struct cvfs_private *private = p_private;
  60
  61         DEBUG(5,("vfs_cifs: sending oplock break level %d for fnum %d\n", level, fnum));
  62         return req_send_oplock_break(private->tcon, fnum, level);
  63 }
  64
  65  /*
  66   a handler for read events on a connection to a backend server
  67 */
  68 static void cifs_socket_handler(struct event_context *ev, struct fd_event *fde,
  69                                 uint16_t flags, void *private)
  70 {
  71         struct cvfs_private *cvfs = talloc_get_type(private, struct cvfs_private);
  72         struct smbsrv_tcon *tcon = cvfs->tcon;
  73
  74         if (!smbcli_transport_process(cvfs->transport)) {
  75                 /* the connection to our server is dead */
  76                 talloc_free(tcon);
  77         }
  78 }
  79
  80 /*
  81   connect to a share - used when a tree_connect operation comes in.
  82 */
  83 static NTSTATUS cvfs_connect(struct ntvfs_module_context *ntvfs,
  84                              struct smbsrv_request *req, const char *sharename)
  85 {
  86         struct smbsrv_tcon *tcon = req->tcon;
  87         NTSTATUS status;
  88         struct cvfs_private *private;
  89         const char *host, *user, *pass, *domain, *remote_share;
  90         struct smb_composite_connect io;
  91         struct composite_context *creq;
  92         struct fd_event *fde;
  93
  94         struct cli_credentials *credentials;
  95
  96         /* Here we need to determine which server to connect to.
  97          * For now we use parametric options, type cifs.
  98          * Later we will use security=server and auth_server.c.
  99          */
 100         host = lp_parm_string(req->tcon->service, "cifs", "server");
 101         user = lp_parm_string(req->tcon->service, "cifs", "user");
 102         pass = lp_parm_string(req->tcon->service, "cifs", "password");
 103         domain = lp_parm_string(req->tcon->service, "cifs", "domain");
 104         remote_share = lp_parm_string(req->tcon->service, "cifs", "share");
 105         if (!remote_share) {
 106                 remote_share = sharename;
 107         }
 108
 109         if (!host || !user || !pass || !domain) {
 110                 DEBUG(1,("CIFS backend: You must supply server, user, password and domain\n"));
 111                 return NT_STATUS_INVALID_PARAMETER;
 112         }
 113
 114         private = talloc(req->tcon, struct cvfs_private);
 115         if (!private) {
 116                 return NT_STATUS_NO_MEMORY;
 117         }
 118         ZERO_STRUCTP(private);
 119
 120         ntvfs->private_data = private;
 121
 122         credentials = cli_credentials_init(private);
 123         cli_credentials_set_username(credentials, user, CRED_SPECIFIED);
 124         cli_credentials_set_domain(credentials, domain, CRED_SPECIFIED);
 125         cli_credentials_set_password(credentials, pass, CRED_SPECIFIED);
 126         cli_credentials_set_workstation(credentials, "vfs_cifs", CRED_SPECIFIED);
 127
 128         /* connect to the server, using the smbd event context */
 129         io.in.dest_host = host;
 130         io.in.port = 0;
 131         io.in.called_name = host;
 132         io.in.credentials = credentials;
 133         io.in.fallback_to_anonymous = False;
 134         io.in.workgroup = lp_workgroup();
 135         io.in.service = remote_share;
 136         io.in.service_type = "?????";
 137
 138         creq = smb_composite_connect_send(&io, private, tcon->smb_conn->connection->event.ctx);
 139         status = smb_composite_connect_recv(creq, private);
 140         NT_STATUS_NOT_OK_RETURN(status);
 141
 142         private->tree = io.out.tree;
 143
 144         private->transport = private->tree->session->transport;
 145         SETUP_PID;
 146         private->tcon = req->tcon;
 147
 148         tcon->fs_type = talloc_strdup(tcon, "NTFS");
 149         tcon->dev_type = talloc_strdup(tcon, "A:");
 150
 151         /* we need to receive oplock break requests from the server */
 152         smbcli_oplock_handler(private->transport, oplock_handler, private);
 153
 154         /* take over event handling for this socket */
 155         talloc_free(private->transport->socket->event.fde);
 156         fde = event_add_fd(private->transport->socket->event.ctx,
 157                            private,
 158                            socket_get_fd(private->transport->socket->sock),
 159                            EVENT_FD_READ | EVENT_FD_WRITE,
 160                            cifs_socket_handler,
 161                            private);
 162         private->transport->socket->event.fde = fde;
 163
 164
 165         private->map_generic = lp_parm_bool(req->tcon->service,
 166                                             "cifs", "mapgeneric", False);
 167
 168         return NT_STATUS_OK;
 169 }
 170
 171 /*
 172   disconnect from a share
 173 */
 174 static NTSTATUS cvfs_disconnect(struct ntvfs_module_context *ntvfs,
 175                                 struct smbsrv_tcon *tcon)
 176 {
 177         struct cvfs_private *private = ntvfs->private_data;
 178
 179         talloc_free(private);
 180
 181         return NT_STATUS_OK;
 182 }
 183
 184 /*
 185   a handler for simple async replies
 186   this handler can only be used for functions that don't return any
 187   parameters (those that just return a status code)
 188  */
 189 static void async_simple(struct smbcli_request *c_req)
 190 {
 191         struct async_info *async = c_req->async.private;
 192         struct smbsrv_request *req = async->req;
 193         req->async_states->status = smbcli_request_simple_recv(c_req);
 194         req->async_states->send_fn(req);
 195 }
 196
 197
 198 /* save some typing for the simple functions */
 199 #define ASYNC_RECV_TAIL(io, async_fn) do { \
 200         if (!c_req) return NT_STATUS_UNSUCCESSFUL; \
 201         { \
 202                 struct async_info *async; \
 203                 async = talloc(req, struct async_info); \
 204                 if (!async) return NT_STATUS_NO_MEMORY; \
 205                 async->parms = io; \
 206                 async->req = req; \
 207                 c_req->async.private = async; \
 208         } \
 209         c_req->async.fn = async_fn; \
 210         req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC; \
 211         return NT_STATUS_OK; \
 212 } while (0)
 213
 214 #define SIMPLE_ASYNC_TAIL ASYNC_RECV_TAIL(NULL, async_simple)
 215
 216 /*
 217   delete a file - the dirtype specifies the file types to include in the search.
 218   The name can contain CIFS wildcards, but rarely does (except with OS/2 clients)
 219 */
 220 static NTSTATUS cvfs_unlink(struct ntvfs_module_context *ntvfs,
 221                             struct smbsrv_request *req, struct smb_unlink *unl)
 222 {
 223         struct cvfs_private *private = ntvfs->private_data;
 224         struct smbcli_request *c_req;
 225
 226         SETUP_PID;
 227
 228         /* see if the front end will allow us to perform this
 229            function asynchronously.  */
 230         if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
 231                 return smb_raw_unlink(private->tree, unl);
 232         }
 233
 234         c_req = smb_raw_unlink_send(private->tree, unl);
 235
 236         SIMPLE_ASYNC_TAIL;
 237 }
 238
 239 /*
 240   a handler for async ioctl replies
 241  */
 242 static void async_ioctl(struct smbcli_request *c_req)
 243 {
 244         struct async_info *async = c_req->async.private;
 245         struct smbsrv_request *req = async->req;
 246         req->async_states->status = smb_raw_ioctl_recv(c_req, req, async->parms);
 247         req->async_states->send_fn(req);
 248 }
 249
 250 /*
 251   ioctl interface
 252 */
 253 static NTSTATUS cvfs_ioctl(struct ntvfs_module_context *ntvfs,
 254                                 struct smbsrv_request *req, union smb_ioctl *io)
 255 {
 256         struct cvfs_private *private = ntvfs->private_data;
 257         struct smbcli_request *c_req;
 258
 259         SETUP_PID;
 260
 261         /* see if the front end will allow us to perform this
 262            function asynchronously.  */
 263         if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
 264                 return smb_raw_ioctl(private->tree, req, io);
 265         }
 266
 267         c_req = smb_raw_ioctl_send(private->tree, io);
 268
 269         ASYNC_RECV_TAIL(io, async_ioctl);
 270 }
 271
 272 /*
 273   check if a directory exists
 274 */
 275 static NTSTATUS cvfs_chkpath(struct ntvfs_module_context *ntvfs,
 276                                 struct smbsrv_request *req, struct smb_chkpath *cp)
 277 {
 278         struct cvfs_private *private = ntvfs->private_data;
 279         struct smbcli_request *c_req;
 280
 281         SETUP_PID;
 282
 283         if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
 284                 return smb_raw_chkpath(private->tree, cp);
 285         }
 286
 287         c_req = smb_raw_chkpath_send(private->tree, cp);
 288
 289         SIMPLE_ASYNC_TAIL;
 290 }
 291
 292 /*
 293   a handler for async qpathinfo replies
 294  */
 295 static void async_qpathinfo(struct smbcli_request *c_req)
 296 {
 297         struct async_info *async = c_req->async.private;
 298         struct smbsrv_request *req = async->req;
 299         req->async_states->status = smb_raw_pathinfo_recv(c_req, req, async->parms);
 300         req->async_states->send_fn(req);
 301 }
 302
 303 /*
 304   return info on a pathname
 305 */
 306 static NTSTATUS cvfs_qpathinfo(struct ntvfs_module_context *ntvfs,
 307                                 struct smbsrv_request *req, union smb_fileinfo *info)
 308 {
 309         struct cvfs_private *private = ntvfs->private_data;
 310         struct smbcli_request *c_req;
 311
 312         SETUP_PID;
 313
 314         if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
 315                 return smb_raw_pathinfo(private->tree, req, info);
 316         }
 317
 318         c_req = smb_raw_pathinfo_send(private->tree, info);
 319
 320         ASYNC_RECV_TAIL(info, async_qpathinfo);
 321 }
 322
 323 /*
 324   a handler for async qfileinfo replies
 325  */
 326 static void async_qfileinfo(struct smbcli_request *c_req)
 327 {
 328         struct async_info *async = c_req->async.private;
 329         struct smbsrv_request *req = async->req;
 330         req->async_states->status = smb_raw_fileinfo_recv(c_req, req, async->parms);
 331         req->async_states->send_fn(req);
 332 }
 333
 334 /*
 335   query info on a open file
 336 */
 337 static NTSTATUS cvfs_qfileinfo(struct ntvfs_module_context *ntvfs,
 338                                 struct smbsrv_request *req, union smb_fileinfo *info)
 339 {
 340         struct cvfs_private *private = ntvfs->private_data;
 341         struct smbcli_request *c_req;
 342
 343         SETUP_PID;
 344
 345         if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
 346                 return smb_raw_fileinfo(private->tree, req, info);
 347         }
 348
 349         c_req = smb_raw_fileinfo_send(private->tree, info);
 350
 351         ASYNC_RECV_TAIL(info, async_qfileinfo);
 352 }
 353
 354
 355 /*
 356   set info on a pathname
 357 */
 358 static NTSTATUS cvfs_setpathinfo(struct ntvfs_module_context *ntvfs,
 359                                 struct smbsrv_request *req, union smb_setfileinfo *st)
 360 {
 361         struct cvfs_private *private = ntvfs->private_data;
 362         struct smbcli_request *c_req;
 363
 364         SETUP_PID;
 365
 366         if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
 367                 return smb_raw_setpathinfo(private->tree, st);
 368         }
 369
 370         c_req = smb_raw_setpathinfo_send(private->tree, st);
 371
 372         SIMPLE_ASYNC_TAIL;
 373 }
 374
 375
 376 /*
 377   a handler for async open replies
 378  */
 379 static void async_open(struct smbcli_request *c_req)
 380 {
 381         struct async_info *async = c_req->async.private;
 382         struct smbsrv_request *req = async->req;
 383         req->async_states->status = smb_raw_open_recv(c_req, req, async->parms);
 384         req->async_states->send_fn(req);
 385 }
 386
 387 /*
 388   open a file
 389 */
 390 static NTSTATUS cvfs_open(struct ntvfs_module_context *ntvfs,
 391                                 struct smbsrv_request *req, union smb_open *io)
 392 {
 393         struct cvfs_private *private = ntvfs->private_data;
 394         struct smbcli_request *c_req;
 395
 396         SETUP_PID;
 397
 398         if (io->generic.level != RAW_OPEN_GENERIC &&
 399             private->map_generic) {
 400                 return ntvfs_map_open(req, io, ntvfs);
 401         }
 402
 403         if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
 404                 return smb_raw_open(private->tree, req, io);
 405         }
 406
 407         c_req = smb_raw_open_send(private->tree, io);
 408
 409         ASYNC_RECV_TAIL(io, async_open);
 410 }
 411
 412 /*
 413   create a directory
 414 */
 415 static NTSTATUS cvfs_mkdir(struct ntvfs_module_context *ntvfs,
 416                                 struct smbsrv_request *req, union smb_mkdir *md)
 417 {
 418         struct cvfs_private *private = ntvfs->private_data;
 419         struct smbcli_request *c_req;
 420
 421         SETUP_PID;
 422
 423         if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
 424                 return smb_raw_mkdir(private->tree, md);
 425         }
 426
 427         c_req = smb_raw_mkdir_send(private->tree, md);
 428
 429         SIMPLE_ASYNC_TAIL;
 430 }
 431
 432 /*
 433   remove a directory
 434 */
 435 static NTSTATUS cvfs_rmdir(struct ntvfs_module_context *ntvfs,
 436                                 struct smbsrv_request *req, struct smb_rmdir *rd)
 437 {
 438         struct cvfs_private *private = ntvfs->private_data;
 439         struct smbcli_request *c_req;
 440
 441         SETUP_PID;
 442
 443         if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
 444                 return smb_raw_rmdir(private->tree, rd);
 445         }
 446         c_req = smb_raw_rmdir_send(private->tree, rd);
 447
 448         SIMPLE_ASYNC_TAIL;
 449 }
 450
 451 /*
 452   rename a set of files
 453 */
 454 static NTSTATUS cvfs_rename(struct ntvfs_module_context *ntvfs,
 455                                 struct smbsrv_request *req, union smb_rename *ren)
 456 {
 457         struct cvfs_private *private = ntvfs->private_data;
 458         struct smbcli_request *c_req;
 459
 460         SETUP_PID;
 461
 462         if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
 463                 return smb_raw_rename(private->tree, ren);
 464         }
 465
 466         c_req = smb_raw_rename_send(private->tree, ren);
 467
 468         SIMPLE_ASYNC_TAIL;
 469 }
 470
 471 /*
 472   copy a set of files
 473 */
 474 static NTSTATUS cvfs_copy(struct ntvfs_module_context *ntvfs,
 475                                 struct smbsrv_request *req, struct smb_copy *cp)
 476 {
 477         return NT_STATUS_NOT_SUPPORTED;
 478 }
 479
 480 /*
 481   a handler for async read replies
 482  */
 483 static void async_read(struct smbcli_request *c_req)
 484 {
 485         struct async_info *async = c_req->async.private;
 486         struct smbsrv_request *req = async->req;
 487         req->async_states->status = smb_raw_read_recv(c_req, async->parms);
 488         req->async_states->send_fn(req);
 489 }
 490
 491 /*
 492   read from a file
 493 */
 494 static NTSTATUS cvfs_read(struct ntvfs_module_context *ntvfs,
 495                                 struct smbsrv_request *req, union smb_read *rd)
 496 {
 497         struct cvfs_private *private = ntvfs->private_data;
 498         struct smbcli_request *c_req;
 499
 500         SETUP_PID;
 501
 502         if (rd->generic.level != RAW_READ_GENERIC &&
 503             private->map_generic) {
 504                 return ntvfs_map_read(req, rd, ntvfs);
 505         }
 506
 507         if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
 508                 return smb_raw_read(private->tree, rd);
 509         }
 510
 511         c_req = smb_raw_read_send(private->tree, rd);
 512
 513         ASYNC_RECV_TAIL(rd, async_read);
 514 }
 515
 516 /*
 517   a handler for async write replies
 518  */
 519 static void async_write(struct smbcli_request *c_req)
 520 {
 521         struct async_info *async = c_req->async.private;
 522         struct smbsrv_request *req = async->req;
 523         req->async_states->status = smb_raw_write_recv(c_req, async->parms);
 524         req->async_states->send_fn(req);
 525 }
 526
 527 /*
 528   write to a file
 529 */
 530 static NTSTATUS cvfs_write(struct ntvfs_module_context *ntvfs,
 531                                 struct smbsrv_request *req, union smb_write *wr)
 532 {
 533         struct cvfs_private *private = ntvfs->private_data;
 534         struct smbcli_request *c_req;
 535
 536         SETUP_PID;
 537
 538         if (wr->generic.level != RAW_WRITE_GENERIC &&
 539             private->map_generic) {
 540                 return ntvfs_map_write(req, wr, ntvfs);
 541         }
 542
 543         if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
 544                 return smb_raw_write(private->tree, wr);
 545         }
 546
 547         c_req = smb_raw_write_send(private->tree, wr);
 548
 549         ASYNC_RECV_TAIL(wr, async_write);
 550 }
 551
 552 /*
 553   a handler for async seek replies
 554  */
 555 static void async_seek(struct smbcli_request *c_req)
 556 {
 557         struct async_info *async = c_req->async.private;
 558         struct smbsrv_request *req = async->req;
 559         req->async_states->status = smb_raw_seek_recv(c_req, async->parms);
 560         req->async_states->send_fn(req);
 561 }
 562
 563 /*
 564   seek in a file
 565 */
 566 static NTSTATUS cvfs_seek(struct ntvfs_module_context *ntvfs,
 567                           struct smbsrv_request *req, struct smb_seek *io)
 568 {
 569         struct cvfs_private *private = ntvfs->private_data;
 570         struct smbcli_request *c_req;
 571
 572         SETUP_PID;
 573
 574         if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
 575                 return smb_raw_seek(private->tree, io);
 576         }
 577
 578         c_req = smb_raw_seek_send(private->tree, io);
 579
 580         ASYNC_RECV_TAIL(io, async_seek);
 581 }
 582
 583 /*
 584   flush a file
 585 */
 586 static NTSTATUS cvfs_flush(struct ntvfs_module_context *ntvfs,
 587                            struct smbsrv_request *req, struct smb_flush *io)
 588 {
 589         struct cvfs_private *private = ntvfs->private_data;
 590         struct smbcli_request *c_req;
 591
 592         SETUP_PID;
 593
 594         if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
 595                 return smb_raw_flush(private->tree, io);
 596         }
 597
 598         c_req = smb_raw_flush_send(private->tree, io);
 599
 600         SIMPLE_ASYNC_TAIL;
 601 }
 602
 603 /*
 604   close a file
 605 */
 606 static NTSTATUS cvfs_close(struct ntvfs_module_context *ntvfs,
 607                                 struct smbsrv_request *req, union smb_close *io)
 608 {
 609         struct cvfs_private *private = ntvfs->private_data;
 610         struct smbcli_request *c_req;
 611
 612         SETUP_PID;
 613
 614         if (io->generic.level != RAW_CLOSE_GENERIC &&
 615             private->map_generic) {
 616                 return ntvfs_map_close(req, io, ntvfs);
 617         }
 618
 619         if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
 620                 return smb_raw_close(private->tree, io);
 621         }
 622
 623         c_req = smb_raw_close_send(private->tree, io);
 624
 625         SIMPLE_ASYNC_TAIL;
 626 }
 627
 628 /*
 629   exit - closing files open by the pid
 630 */
 631 static NTSTATUS cvfs_exit(struct ntvfs_module_context *ntvfs,
 632                                 struct smbsrv_request *req)
 633 {
 634         struct cvfs_private *private = ntvfs->private_data;
 635         struct smbcli_request *c_req;
 636
 637         SETUP_PID;
 638
 639         if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
 640                 return smb_raw_exit(private->tree->session);
 641         }
 642
 643         c_req = smb_raw_exit_send(private->tree->session);
 644
 645         SIMPLE_ASYNC_TAIL;
 646 }
 647
 648 /*
 649   logoff - closing files open by the user
 650 */
 651 static NTSTATUS cvfs_logoff(struct ntvfs_module_context *ntvfs,
 652                                 struct smbsrv_request *req)
 653 {
 654         /* we can't do this right in the cifs backend .... */
 655         return NT_STATUS_OK;
 656 }
 657
 658 /*
 659   setup for an async call - nothing to do yet
 660 */
 661 static NTSTATUS cvfs_async_setup(struct ntvfs_module_context *ntvfs,
 662                                  struct smbsrv_request *req,
 663                                  void *private)
 664 {
 665         return NT_STATUS_OK;
 666 }
 667
 668 /*
 669   cancel an async call
 670 */
 671 static NTSTATUS cvfs_cancel(struct ntvfs_module_context *ntvfs,
 672                             struct smbsrv_request *req)
 673 {
 674         return NT_STATUS_NOT_IMPLEMENTED;
 675 }
 676
 677 /*
 678   lock a byte range
 679 */
 680 static NTSTATUS cvfs_lock(struct ntvfs_module_context *ntvfs,
 681                                 struct smbsrv_request *req, union smb_lock *lck)
 682 {
 683         struct cvfs_private *private = ntvfs->private_data;
 684         struct smbcli_request *c_req;
 685
 686         SETUP_PID;
 687
 688         if (lck->generic.level != RAW_LOCK_GENERIC &&
 689             private->map_generic) {
 690                 return ntvfs_map_lock(req, lck, ntvfs);
 691         }
 692
 693         if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
 694                 return smb_raw_lock(private->tree, lck);
 695         }
 696
 697         c_req = smb_raw_lock_send(private->tree, lck);
 698         SIMPLE_ASYNC_TAIL;
 699 }
 700
 701 /*
 702   set info on a open file
 703 */
 704 static NTSTATUS cvfs_setfileinfo(struct ntvfs_module_context *ntvfs,
 705                                  struct smbsrv_request *req,
 706                                  union smb_setfileinfo *info)
 707 {
 708         struct cvfs_private *private = ntvfs->private_data;
 709         struct smbcli_request *c_req;
 710
 711         SETUP_PID;
 712
 713         if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
 714                 return smb_raw_setfileinfo(private->tree, info);
 715         }
 716         c_req = smb_raw_setfileinfo_send(private->tree, info);
 717
 718         SIMPLE_ASYNC_TAIL;
 719 }
 720
 721
 722 /*
 723   a handler for async fsinfo replies
 724  */
 725 static void async_fsinfo(struct smbcli_request *c_req)
 726 {
 727         struct async_info *async = c_req->async.private;
 728         struct smbsrv_request *req = async->req;
 729         req->async_states->status = smb_raw_fsinfo_recv(c_req, req, async->parms);
 730         req->async_states->send_fn(req);
 731 }
 732
 733 /*
 734   return filesystem space info
 735 */
 736 static NTSTATUS cvfs_fsinfo(struct ntvfs_module_context *ntvfs,
 737                                 struct smbsrv_request *req, union smb_fsinfo *fs)
 738 {
 739         struct cvfs_private *private = ntvfs->private_data;
 740         struct smbcli_request *c_req;
 741
 742         SETUP_PID;
 743
 744         if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
 745                 return smb_raw_fsinfo(private->tree, req, fs);
 746         }
 747
 748         c_req = smb_raw_fsinfo_send(private->tree, req, fs);
 749
 750         ASYNC_RECV_TAIL(fs, async_fsinfo);
 751 }
 752
 753 /*
 754   return print queue info
 755 */
 756 static NTSTATUS cvfs_lpq(struct ntvfs_module_context *ntvfs,
 757                                 struct smbsrv_request *req, union smb_lpq *lpq)
 758 {
 759         return NT_STATUS_NOT_SUPPORTED;
 760 }
 761
 762 /*
 763    list files in a directory matching a wildcard pattern
 764 */
 765 static NTSTATUS cvfs_search_first(struct ntvfs_module_context *ntvfs,
 766                                   struct smbsrv_request *req, union smb_search_first *io,
 767                                   void *search_private,
 768                                   BOOL (*callback)(void *, union smb_search_data *))
 769 {
 770         struct cvfs_private *private = ntvfs->private_data;
 771
 772         SETUP_PID;
 773
 774         return smb_raw_search_first(private->tree, req, io, search_private, callback);
 775 }
 776
 777 /* continue a search */
 778 static NTSTATUS cvfs_search_next(struct ntvfs_module_context *ntvfs,
 779                                  struct smbsrv_request *req, union smb_search_next *io,
 780                                  void *search_private,
 781                                  BOOL (*callback)(void *, union smb_search_data *))
 782 {
 783         struct cvfs_private *private = ntvfs->private_data;
 784
 785         SETUP_PID;
 786
 787         return smb_raw_search_next(private->tree, req, io, search_private, callback);
 788 }
 789
 790 /* close a search */
 791 static NTSTATUS cvfs_search_close(struct ntvfs_module_context *ntvfs,
 792                                   struct smbsrv_request *req, union smb_search_close *io)
 793 {
 794         struct cvfs_private *private = ntvfs->private_data;
 795
 796         SETUP_PID;
 797
 798         return smb_raw_search_close(private->tree, io);
 799 }
 800
 801 /*
 802   a handler for async trans2 replies
 803  */
 804 static void async_trans2(struct smbcli_request *c_req)
 805 {
 806         struct async_info *async = c_req->async.private;
 807         struct smbsrv_request *req = async->req;
 808         req->async_states->status = smb_raw_trans2_recv(c_req, req, async->parms);
 809         req->async_states->send_fn(req);
 810 }
 811
 812 /* raw trans2 */
 813 static NTSTATUS cvfs_trans2(struct ntvfs_module_context *ntvfs,
 814                                 struct smbsrv_request *req, struct smb_trans2 *trans2)
 815 {
 816         struct cvfs_private *private = ntvfs->private_data;
 817         struct smbcli_request *c_req;
 818
 819         SETUP_PID;
 820
 821         if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
 822                 return smb_raw_trans2(private->tree, req, trans2);
 823         }
 824
 825         c_req = smb_raw_trans2_send(private->tree, trans2);
 826
 827         ASYNC_RECV_TAIL(trans2, async_trans2);
 828 }
 829
 830
 831 /* SMBtrans - not used on file shares */
 832 static NTSTATUS cvfs_trans(struct ntvfs_module_context *ntvfs,
 833                                 struct smbsrv_request *req, struct smb_trans2 *trans2)
 834 {
 835         return NT_STATUS_ACCESS_DENIED;
 836 }
 837
 838 /*
 839   initialise the CIFS->CIFS backend, registering ourselves with the ntvfs subsystem
 840  */
 841 NTSTATUS ntvfs_cifs_init(void)
 842 {
 843         NTSTATUS ret;
 844         struct ntvfs_ops ops;
 845
 846         ZERO_STRUCT(ops);
 847
 848         /* fill in the name and type */
 849         ops.name = "cifs";
 850         ops.type = NTVFS_DISK;
 851
 852         /* fill in all the operations */
 853         ops.connect = cvfs_connect;
 854         ops.disconnect = cvfs_disconnect;
 855         ops.unlink = cvfs_unlink;
 856         ops.chkpath = cvfs_chkpath;
 857         ops.qpathinfo = cvfs_qpathinfo;
 858         ops.setpathinfo = cvfs_setpathinfo;
 859         ops.openfile = cvfs_open;
 860         ops.mkdir = cvfs_mkdir;
 861         ops.rmdir = cvfs_rmdir;
 862         ops.rename = cvfs_rename;
 863         ops.copy = cvfs_copy;
 864         ops.ioctl = cvfs_ioctl;
 865         ops.read = cvfs_read;
 866         ops.write = cvfs_write;
 867         ops.seek = cvfs_seek;
 868         ops.flush = cvfs_flush;
 869         ops.close = cvfs_close;
 870         ops.exit = cvfs_exit;
 871         ops.lock = cvfs_lock;
 872         ops.setfileinfo = cvfs_setfileinfo;
 873         ops.qfileinfo = cvfs_qfileinfo;
 874         ops.fsinfo = cvfs_fsinfo;
 875         ops.lpq = cvfs_lpq;
 876         ops.search_first = cvfs_search_first;
 877         ops.search_next = cvfs_search_next;
 878         ops.search_close = cvfs_search_close;
 879         ops.trans = cvfs_trans;
 880         ops.logoff = cvfs_logoff;
 881         ops.async_setup = cvfs_async_setup;
 882         ops.cancel = cvfs_cancel;
 883
 884         if (lp_parm_bool(-1, "cifs", "maptrans2", False)) {
 885                 ops.trans2 = cvfs_trans2;
 886         }
 887
 888         /* register ourselves with the NTVFS subsystem. We register
 889            under the name 'cifs'. */
 890         ret = ntvfs_register(&ops);
 891
 892         if (!NT_STATUS_IS_OK(ret)) {
 893                 DEBUG(0,("Failed to register CIFS backend!\n"));
 894         }
 895
 896         return ret;
 897 }