source4/ntvfs/smb2/vfs_smb2.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    CIFS-to-SMB2 NTVFS filesystem backend
   5
   6    Copyright (C) Andrew Tridgell 2008
   7
   8    largely based on vfs_cifs.c which was
   9       Copyright (C) Andrew Tridgell 2003
  10       Copyright (C) James J Myers 2003 <myersjj@samba.org>
  11
  12    This program is free software; you can redistribute it and/or modify
  13    it under the terms of the GNU General Public License as published by
  14    the Free Software Foundation; either version 3 of the License, or
  15    (at your option) any later version.
  16
  17    This program is distributed in the hope that it will be useful,
  18    but WITHOUT ANY WARRANTY; without even the implied warranty of
  19    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20    GNU General Public License for more details.
  21
  22    You should have received a copy of the GNU General Public License
  23    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  24 */
  25 /*
  26   this implements a CIFS->CIFS NTVFS filesystem backend.
  27
  28 */
  29
  30 #include "includes.h"
  31 #include "libcli/raw/libcliraw.h"
  32 #include "libcli/raw/raw_proto.h"
  33 #include "libcli/composite/composite.h"
  34 #include "libcli/smb_composite/smb_composite.h"
  35 #include "auth/auth.h"
  36 #include "auth/credentials/credentials.h"
  37 #include "ntvfs/ntvfs.h"
  38 #include "../lib/util/dlinklist.h"
  39 #include "param/param.h"
  40 #include "libcli/resolve/resolve.h"
  41 #include "libcli/smb2/smb2.h"
  42 #include "libcli/smb2/smb2_calls.h"
  43
  44 NTSTATUS ntvfs_smb2_init(void);
  45
  46 struct cvfs_file {
  47         struct cvfs_file *prev, *next;
  48         uint16_t fnum;
  49         struct ntvfs_handle *h;
  50 };
  51
  52 /* this is stored in ntvfs_private */
  53 struct cvfs_private {
  54         struct smb2_tree *tree;
  55         struct smb2_transport *transport;
  56         struct ntvfs_module_context *ntvfs;
  57         struct async_info *pending;
  58         struct cvfs_file *files;
  59
  60         /* a handle on the root of the share */
  61         /* TODO: leaving this handle open could prevent other users
  62            from opening the share with exclusive access. We probably
  63            need to open it on demand */
  64         struct smb2_handle roothandle;
  65 };
  66
  67
  68 /* a structure used to pass information to an async handler */
  69 struct async_info {
  70         struct async_info *next, *prev;
  71         struct cvfs_private *cvfs;
  72         struct ntvfs_request *req;
  73         void *c_req;
  74         struct composite_context *c_comp;
  75         struct cvfs_file *f;
  76         void *parms;
  77 };
  78
  79 #define SETUP_FILE_HERE(f) do { \
  80         f = ntvfs_handle_get_backend_data(io->generic.in.file.ntvfs, ntvfs); \
  81         if (!f) return NT_STATUS_INVALID_HANDLE; \
  82         io->generic.in.file.fnum = f->fnum; \
  83 } while (0)
  84
  85 #define SETUP_FILE do { \
  86         struct cvfs_file *f; \
  87         SETUP_FILE_HERE(f); \
  88 } while (0)
  89
  90 #define SMB2_SERVER             "smb2:server"
  91 #define SMB2_USER               "smb2:user"
  92 #define SMB2_PASSWORD           "smb2:password"
  93 #define SMB2_DOMAIN             "smb2:domain"
  94 #define SMB2_SHARE              "smb2:share"
  95 #define SMB2_USE_MACHINE_ACCT   "smb2:use-machine-account"
  96
  97 #define SMB2_USE_MACHINE_ACCT_DEFAULT   false
  98
  99 /*
 100   a handler for oplock break events from the server - these need to be passed
 101   along to the client
 102  */
 103 static bool oplock_handler(struct smbcli_transport *transport, uint16_t tid, uint16_t fnum, uint8_t level, void *p_private)
 104 {
 105         struct cvfs_private *p = p_private;
 106         NTSTATUS status;
 107         struct ntvfs_handle *h = NULL;
 108         struct cvfs_file *f;
 109
 110         for (f=p->files; f; f=f->next) {
 111                 if (f->fnum != fnum) continue;
 112                 h = f->h;
 113                 break;
 114         }
 115
 116         if (!h) {
 117                 DEBUG(5,("vfs_smb2: ignoring oplock break level %d for fnum %d\n", level, fnum));
 118                 return true;
 119         }
 120
 121         DEBUG(5,("vfs_smb2: sending oplock break level %d for fnum %d\n", level, fnum));
 122         status = ntvfs_send_oplock_break(p->ntvfs, h, level);
 123         if (!NT_STATUS_IS_OK(status)) return false;
 124         return true;
 125 }
 126
 127 /*
 128   return a handle to the root of the share
 129 */
 130 static NTSTATUS smb2_get_roothandle(struct smb2_tree *tree, struct smb2_handle *handle)
 131 {
 132         struct smb2_create io;
 133         NTSTATUS status;
 134
 135         ZERO_STRUCT(io);
 136         io.in.oplock_level = 0;
 137         io.in.desired_access = SEC_STD_SYNCHRONIZE | SEC_DIR_READ_ATTRIBUTE | SEC_DIR_LIST;
 138         io.in.file_attributes   = 0;
 139         io.in.create_disposition = NTCREATEX_DISP_OPEN;
 140         io.in.share_access =
 141                 NTCREATEX_SHARE_ACCESS_READ |
 142                 NTCREATEX_SHARE_ACCESS_WRITE|
 143                 NTCREATEX_SHARE_ACCESS_DELETE;
 144         io.in.create_options = 0;
 145         io.in.fname = NULL;
 146
 147         status = smb2_create(tree, tree, &io);
 148         NT_STATUS_NOT_OK_RETURN(status);
 149
 150         *handle = io.out.file.handle;
 151
 152         return NT_STATUS_OK;
 153 }
 154
 155 /*
 156   connect to a share - used when a tree_connect operation comes in.
 157 */
 158 static NTSTATUS cvfs_connect(struct ntvfs_module_context *ntvfs,
 159                              struct ntvfs_request *req,
 160                              union smb_tcon* tcon)
 161 {
 162         NTSTATUS status;
 163         struct cvfs_private *p;
 164         const char *host, *user, *pass, *domain, *remote_share, *sharename;
 165         struct share_config *scfg = ntvfs->ctx->config;
 166         struct smb2_tree *tree;
 167         struct cli_credentials *credentials;
 168         bool machine_account;
 169         struct smbcli_options options;
 170
 171         switch (tcon->generic.level) {
 172         case RAW_TCON_TCON:
 173                 sharename = tcon->tcon.in.service;
 174                 break;
 175         case RAW_TCON_TCONX:
 176                 sharename = tcon->tconx.in.path;
 177                 break;
 178         case RAW_TCON_SMB2:
 179                 sharename = tcon->smb2.in.path;
 180                 break;
 181         default:
 182                 return NT_STATUS_INVALID_LEVEL;
 183         }
 184
 185         if (strncmp(sharename, "\\\\", 2) == 0) {
 186                 char *str = strchr(sharename+2, '\\');
 187                 if (str) {
 188                         sharename = str + 1;
 189                 }
 190         }
 191
 192         /* Here we need to determine which server to connect to.
 193          * For now we use parametric options, type cifs.
 194          * Later we will use security=server and auth_server.c.
 195          */
 196         host = share_string_option(scfg, SMB2_SERVER, NULL);
 197         user = share_string_option(scfg, SMB2_USER, NULL);
 198         pass = share_string_option(scfg, SMB2_PASSWORD, NULL);
 199         domain = share_string_option(scfg, SMB2_DOMAIN, NULL);
 200         remote_share = share_string_option(scfg, SMB2_SHARE, NULL);
 201         if (!remote_share) {
 202                 remote_share = sharename;
 203         }
 204
 205         machine_account = share_bool_option(scfg, SMB2_USE_MACHINE_ACCT, SMB2_USE_MACHINE_ACCT_DEFAULT);
 206
 207         p = talloc_zero(ntvfs, struct cvfs_private);
 208         if (!p) {
 209                 return NT_STATUS_NO_MEMORY;
 210         }
 211
 212         ntvfs->private_data = p;
 213
 214         if (!host) {
 215                 DEBUG(1,("CIFS backend: You must supply server\n"));
 216                 return NT_STATUS_INVALID_PARAMETER;
 217         }
 218
 219         if (user && pass) {
 220                 DEBUG(5, ("CIFS backend: Using specified password\n"));
 221                 credentials = cli_credentials_init(p);
 222                 if (!credentials) {
 223                         return NT_STATUS_NO_MEMORY;
 224                 }
 225                 cli_credentials_set_conf(credentials, ntvfs->ctx->lp_ctx);
 226                 cli_credentials_set_username(credentials, user, CRED_SPECIFIED);
 227                 if (domain) {
 228                         cli_credentials_set_domain(credentials, domain, CRED_SPECIFIED);
 229                 }
 230                 cli_credentials_set_password(credentials, pass, CRED_SPECIFIED);
 231         } else if (machine_account) {
 232                 DEBUG(5, ("CIFS backend: Using machine account\n"));
 233                 credentials = cli_credentials_init(p);
 234                 cli_credentials_set_conf(credentials, ntvfs->ctx->lp_ctx);
 235                 if (domain) {
 236                         cli_credentials_set_domain(credentials, domain, CRED_SPECIFIED);
 237                 }
 238                 status = cli_credentials_set_machine_account(credentials, ntvfs->ctx->lp_ctx);
 239                 if (!NT_STATUS_IS_OK(status)) {
 240                         return status;
 241                 }
 242         } else if (req->session_info->credentials) {
 243                 DEBUG(5, ("CIFS backend: Using delegated credentials\n"));
 244                 credentials = req->session_info->credentials;
 245         } else {
 246                 DEBUG(1,("CIFS backend: NO delegated credentials found: You must supply server, user and password or the client must supply delegated credentials\n"));
 247                 return NT_STATUS_INVALID_PARAMETER;
 248         }
 249
 250         lpcfg_smbcli_options(ntvfs->ctx->lp_ctx, &options);
 251
 252         status = smb2_connect(p, host,
 253                         lpcfg_parm_string_list(p, ntvfs->ctx->lp_ctx, NULL, "smb2", "ports", NULL),
 254                         remote_share,
 255                         lpcfg_resolve_context(ntvfs->ctx->lp_ctx),
 256                         credentials,
 257                         &tree,
 258                         ntvfs->ctx->event_ctx, &options,
 259                         lpcfg_socket_options(ntvfs->ctx->lp_ctx),
 260                         lpcfg_gensec_settings(p, ntvfs->ctx->lp_ctx));
 261         NT_STATUS_NOT_OK_RETURN(status);
 262
 263         status = smb2_get_roothandle(tree, &p->roothandle);
 264         NT_STATUS_NOT_OK_RETURN(status);
 265
 266         p->tree = tree;
 267         p->transport = p->tree->session->transport;
 268         p->ntvfs = ntvfs;
 269
 270         ntvfs->ctx->fs_type = talloc_strdup(ntvfs->ctx, "NTFS");
 271         NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->fs_type);
 272         ntvfs->ctx->dev_type = talloc_strdup(ntvfs->ctx, "A:");
 273         NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->dev_type);
 274
 275         if (tcon->generic.level == RAW_TCON_TCONX) {
 276                 tcon->tconx.out.fs_type = ntvfs->ctx->fs_type;
 277                 tcon->tconx.out.dev_type = ntvfs->ctx->dev_type;
 278         }
 279
 280         /* we need to receive oplock break requests from the server */
 281         /* TODO: enable oplocks
 282         smbcli_oplock_handler(p->transport, oplock_handler, p);
 283         */
 284         return NT_STATUS_OK;
 285 }
 286
 287 /*
 288   disconnect from a share
 289 */
 290 static NTSTATUS cvfs_disconnect(struct ntvfs_module_context *ntvfs)
 291 {
 292         struct cvfs_private *p = ntvfs->private_data;
 293         struct async_info *a, *an;
 294
 295         /* first cleanup pending requests */
 296         for (a=p->pending; a; a = an) {
 297                 an = a->next;
 298                 talloc_free(a->c_req);
 299                 talloc_free(a);
 300         }
 301
 302         talloc_free(p);
 303         ntvfs->private_data = NULL;
 304
 305         return NT_STATUS_OK;
 306 }
 307
 308 /*
 309   destroy an async info structure
 310 */
 311 static int async_info_destructor(struct async_info *async)
 312 {
 313         DLIST_REMOVE(async->cvfs->pending, async);
 314         return 0;
 315 }
 316
 317 /*
 318   a handler for simple async SMB2 replies
 319   this handler can only be used for functions that don't return any
 320   parameters (those that just return a status code)
 321  */
 322 static void async_simple_smb2(struct smb2_request *c_req)
 323 {
 324         struct async_info *async = c_req->async.private_data;
 325         struct ntvfs_request *req = async->req;
 326
 327         smb2_request_receive(c_req);
 328         req->async_states->status = smb2_request_destroy(c_req);
 329         talloc_free(async);
 330         req->async_states->send_fn(req);
 331 }
 332
 333 /*
 334   a handler for simple async composite replies
 335   this handler can only be used for functions that don't return any
 336   parameters (those that just return a status code)
 337  */
 338 static void async_simple_composite(struct composite_context *c_req)
 339 {
 340         struct async_info *async = c_req->async.private_data;
 341         struct ntvfs_request *req = async->req;
 342
 343         req->async_states->status = composite_wait_free(c_req);
 344         talloc_free(async);
 345         req->async_states->send_fn(req);
 346 }
 347
 348
 349 /* save some typing for the simple functions */
 350 #define ASYNC_RECV_TAIL_F(io, async_fn, file) do { \
 351         if (!c_req) return NT_STATUS_UNSUCCESSFUL; \
 352         { \
 353                 struct async_info *async; \
 354                 async = talloc(req, struct async_info); \
 355                 if (!async) return NT_STATUS_NO_MEMORY; \
 356                 async->parms = io; \
 357                 async->req = req; \
 358                 async->f = file; \
 359                 async->cvfs = p; \
 360                 async->c_req = c_req; \
 361                 DLIST_ADD(p->pending, async); \
 362                 c_req->async.private_data = async; \
 363                 talloc_set_destructor(async, async_info_destructor); \
 364         } \
 365         c_req->async.fn = async_fn; \
 366         req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC; \
 367         return NT_STATUS_OK; \
 368 } while (0)
 369
 370 #define ASYNC_RECV_TAIL(io, async_fn) ASYNC_RECV_TAIL_F(io, async_fn, NULL)
 371
 372 #define SIMPLE_ASYNC_TAIL ASYNC_RECV_TAIL(NULL, async_simple_smb2)
 373 #define SIMPLE_COMPOSITE_TAIL ASYNC_RECV_TAIL(NULL, async_simple_composite)
 374
 375 #define CHECK_ASYNC(req) do { \
 376         if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) { \
 377                 DEBUG(0,("SMB2 proxy backend does not support sync operation at %s\n", \
 378                          __location__)); \
 379                 return NT_STATUS_NOT_IMPLEMENTED; \
 380         }} while (0)
 381
 382 /*
 383   delete a file - the dirtype specifies the file types to include in the search.
 384   The name can contain CIFS wildcards, but rarely does (except with OS/2 clients)
 385
 386   BUGS:
 387      - doesn't handle wildcards
 388      - doesn't obey attrib restrictions
 389 */
 390 static NTSTATUS cvfs_unlink(struct ntvfs_module_context *ntvfs,
 391                             struct ntvfs_request *req, union smb_unlink *unl)
 392 {
 393         struct cvfs_private *p = ntvfs->private_data;
 394         struct composite_context *c_req;
 395
 396         CHECK_ASYNC(req);
 397
 398         c_req = smb2_composite_unlink_send(p->tree, unl);
 399
 400         SIMPLE_COMPOSITE_TAIL;
 401 }
 402
 403 /*
 404   ioctl interface
 405 */
 406 static NTSTATUS cvfs_ioctl(struct ntvfs_module_context *ntvfs,
 407                            struct ntvfs_request *req, union smb_ioctl *io)
 408 {
 409         return NT_STATUS_NOT_IMPLEMENTED;
 410 }
 411
 412 /*
 413   check if a directory exists
 414 */
 415 static NTSTATUS cvfs_chkpath(struct ntvfs_module_context *ntvfs,
 416                              struct ntvfs_request *req, union smb_chkpath *cp)
 417 {
 418         struct cvfs_private *p = ntvfs->private_data;
 419         struct smb2_request *c_req;
 420         struct smb2_find f;
 421
 422         CHECK_ASYNC(req);
 423
 424         /* SMB2 doesn't have a chkpath operation, and also doesn't
 425          have a query path info call, so the best seems to be to do a
 426          find call, using the roothandle we established at connect
 427          time */
 428         ZERO_STRUCT(f);
 429         f.in.file.handle        = p->roothandle;
 430         f.in.level              = SMB2_FIND_DIRECTORY_INFO;
 431         f.in.pattern            = cp->chkpath.in.path;
 432         /* SMB2 find doesn't accept \ or the empty string - this is the best
 433            approximation */
 434         if (strcmp(f.in.pattern, "\\") == 0 ||
 435             strcmp(f.in.pattern, "") == 0) {
 436                 f.in.pattern            = "?";
 437         }
 438         f.in.continue_flags     = SMB2_CONTINUE_FLAG_SINGLE | SMB2_CONTINUE_FLAG_RESTART;
 439         f.in.max_response_size  = 0x1000;
 440
 441         c_req = smb2_find_send(p->tree, &f);
 442
 443         SIMPLE_ASYNC_TAIL;
 444 }
 445
 446 /*
 447   return info on a pathname
 448 */
 449 static NTSTATUS cvfs_qpathinfo(struct ntvfs_module_context *ntvfs,
 450                                struct ntvfs_request *req, union smb_fileinfo *info)
 451 {
 452         return NT_STATUS_NOT_IMPLEMENTED;
 453 }
 454
 455 /*
 456   query info on a open file
 457 */
 458 static NTSTATUS cvfs_qfileinfo(struct ntvfs_module_context *ntvfs,
 459                                struct ntvfs_request *req, union smb_fileinfo *io)
 460 {
 461         return NT_STATUS_NOT_IMPLEMENTED;
 462 }
 463
 464
 465 /*
 466   set info on a pathname
 467 */
 468 static NTSTATUS cvfs_setpathinfo(struct ntvfs_module_context *ntvfs,
 469                                  struct ntvfs_request *req, union smb_setfileinfo *st)
 470 {
 471         return NT_STATUS_NOT_IMPLEMENTED;
 472 }
 473
 474
 475 /*
 476   open a file
 477 */
 478 static NTSTATUS cvfs_open(struct ntvfs_module_context *ntvfs,
 479                           struct ntvfs_request *req, union smb_open *io)
 480 {
 481         return NT_STATUS_NOT_IMPLEMENTED;
 482 }
 483
 484 /*
 485   create a directory
 486 */
 487 static NTSTATUS cvfs_mkdir(struct ntvfs_module_context *ntvfs,
 488                            struct ntvfs_request *req, union smb_mkdir *md)
 489 {
 490         struct cvfs_private *p = ntvfs->private_data;
 491         struct composite_context *c_req;
 492
 493         CHECK_ASYNC(req);
 494
 495         c_req = smb2_composite_mkdir_send(p->tree, md);
 496
 497         SIMPLE_COMPOSITE_TAIL;
 498 }
 499
 500 /*
 501   remove a directory
 502 */
 503 static NTSTATUS cvfs_rmdir(struct ntvfs_module_context *ntvfs,
 504                            struct ntvfs_request *req, struct smb_rmdir *rd)
 505 {
 506         struct cvfs_private *p = ntvfs->private_data;
 507         struct composite_context *c_req;
 508
 509         CHECK_ASYNC(req);
 510
 511         c_req = smb2_composite_rmdir_send(p->tree, rd);
 512
 513         SIMPLE_COMPOSITE_TAIL;
 514 }
 515
 516 /*
 517   rename a set of files
 518 */
 519 static NTSTATUS cvfs_rename(struct ntvfs_module_context *ntvfs,
 520                             struct ntvfs_request *req, union smb_rename *ren)
 521 {
 522         return NT_STATUS_NOT_IMPLEMENTED;
 523 }
 524
 525 /*
 526   copy a set of files
 527 */
 528 static NTSTATUS cvfs_copy(struct ntvfs_module_context *ntvfs,
 529                           struct ntvfs_request *req, struct smb_copy *cp)
 530 {
 531         return NT_STATUS_NOT_SUPPORTED;
 532 }
 533
 534 /*
 535   read from a file
 536 */
 537 static NTSTATUS cvfs_read(struct ntvfs_module_context *ntvfs,
 538                           struct ntvfs_request *req, union smb_read *io)
 539 {
 540         return NT_STATUS_NOT_IMPLEMENTED;
 541 }
 542
 543 /*
 544   write to a file
 545 */
 546 static NTSTATUS cvfs_write(struct ntvfs_module_context *ntvfs,
 547                            struct ntvfs_request *req, union smb_write *io)
 548 {
 549         return NT_STATUS_NOT_IMPLEMENTED;
 550 }
 551
 552 /*
 553   seek in a file
 554 */
 555 static NTSTATUS cvfs_seek(struct ntvfs_module_context *ntvfs,
 556                           struct ntvfs_request *req,
 557                           union smb_seek *io)
 558 {
 559         return NT_STATUS_NOT_IMPLEMENTED;
 560 }
 561
 562 /*
 563   flush a file
 564 */
 565 static NTSTATUS cvfs_flush(struct ntvfs_module_context *ntvfs,
 566                            struct ntvfs_request *req,
 567                            union smb_flush *io)
 568 {
 569         return NT_STATUS_NOT_IMPLEMENTED;
 570 }
 571
 572 /*
 573   close a file
 574 */
 575 static NTSTATUS cvfs_close(struct ntvfs_module_context *ntvfs,
 576                            struct ntvfs_request *req, union smb_close *io)
 577 {
 578         return NT_STATUS_NOT_IMPLEMENTED;
 579 }
 580
 581 /*
 582   exit - closing files open by the pid
 583 */
 584 static NTSTATUS cvfs_exit(struct ntvfs_module_context *ntvfs,
 585                           struct ntvfs_request *req)
 586 {
 587         return NT_STATUS_NOT_IMPLEMENTED;
 588 }
 589
 590 /*
 591   logoff - closing files open by the user
 592 */
 593 static NTSTATUS cvfs_logoff(struct ntvfs_module_context *ntvfs,
 594                             struct ntvfs_request *req)
 595 {
 596         /* we can't do this right in the cifs backend .... */
 597         return NT_STATUS_OK;
 598 }
 599
 600 /*
 601   setup for an async call - nothing to do yet
 602 */
 603 static NTSTATUS cvfs_async_setup(struct ntvfs_module_context *ntvfs,
 604                                  struct ntvfs_request *req,
 605                                  void *private_data)
 606 {
 607         return NT_STATUS_OK;
 608 }
 609
 610 /*
 611   cancel an async call
 612 */
 613 static NTSTATUS cvfs_cancel(struct ntvfs_module_context *ntvfs,
 614                             struct ntvfs_request *req)
 615 {
 616         return NT_STATUS_NOT_IMPLEMENTED;
 617 }
 618
 619 /*
 620   lock a byte range
 621 */
 622 static NTSTATUS cvfs_lock(struct ntvfs_module_context *ntvfs,
 623                           struct ntvfs_request *req, union smb_lock *io)
 624 {
 625         return NT_STATUS_NOT_IMPLEMENTED;
 626 }
 627
 628 /*
 629   set info on a open file
 630 */
 631 static NTSTATUS cvfs_setfileinfo(struct ntvfs_module_context *ntvfs,
 632                                  struct ntvfs_request *req,
 633                                  union smb_setfileinfo *io)
 634 {
 635         return NT_STATUS_NOT_IMPLEMENTED;
 636 }
 637
 638
 639 /*
 640   a handler for async fsinfo replies
 641  */
 642 static void async_fsinfo(struct smb2_request *c_req)
 643 {
 644         struct async_info *async = c_req->async.private_data;
 645         struct ntvfs_request *req = async->req;
 646         req->async_states->status = smb2_getinfo_fs_recv(c_req, req, async->parms);
 647         talloc_free(async);
 648         req->async_states->send_fn(req);
 649 }
 650
 651 /*
 652   return filesystem space info
 653 */
 654 static NTSTATUS cvfs_fsinfo(struct ntvfs_module_context *ntvfs,
 655                             struct ntvfs_request *req, union smb_fsinfo *fs)
 656 {
 657         struct cvfs_private *p = ntvfs->private_data;
 658         struct smb2_request *c_req;
 659         enum smb_fsinfo_level level = fs->generic.level;
 660
 661         CHECK_ASYNC(req);
 662
 663         switch (level) {
 664                 /* some levels go straight through */
 665         case RAW_QFS_VOLUME_INFORMATION:
 666         case RAW_QFS_SIZE_INFORMATION:
 667         case RAW_QFS_DEVICE_INFORMATION:
 668         case RAW_QFS_ATTRIBUTE_INFORMATION:
 669         case RAW_QFS_QUOTA_INFORMATION:
 670         case RAW_QFS_FULL_SIZE_INFORMATION:
 671         case RAW_QFS_OBJECTID_INFORMATION:
 672                 break;
 673
 674                 /* some get mapped */
 675         case RAW_QFS_VOLUME_INFO:
 676                 level = RAW_QFS_VOLUME_INFORMATION;
 677                 break;
 678         case RAW_QFS_SIZE_INFO:
 679                 level = RAW_QFS_SIZE_INFORMATION;
 680                 break;
 681         case RAW_QFS_DEVICE_INFO:
 682                 level = RAW_QFS_DEVICE_INFORMATION;
 683                 break;
 684         case RAW_QFS_ATTRIBUTE_INFO:
 685                 level = RAW_QFS_ATTRIBUTE_INFO;
 686                 break;
 687
 688         default:
 689                 /* the rest get refused for now */
 690                 DEBUG(0,("fsinfo level %u not possible on SMB2\n",
 691                          (unsigned)fs->generic.level));
 692                 break;
 693         }
 694
 695         fs->generic.level = level;
 696         fs->generic.handle = p->roothandle;
 697
 698         c_req = smb2_getinfo_fs_send(p->tree, fs);
 699
 700         ASYNC_RECV_TAIL(fs, async_fsinfo);
 701 }
 702
 703 /*
 704   return print queue info
 705 */
 706 static NTSTATUS cvfs_lpq(struct ntvfs_module_context *ntvfs,
 707                          struct ntvfs_request *req, union smb_lpq *lpq)
 708 {
 709         return NT_STATUS_NOT_SUPPORTED;
 710 }
 711
 712 /*
 713    list files in a directory matching a wildcard pattern
 714 */
 715 static NTSTATUS cvfs_search_first(struct ntvfs_module_context *ntvfs,
 716                                   struct ntvfs_request *req, union smb_search_first *io,
 717                                   void *search_private,
 718                                   bool (*callback)(void *, const union smb_search_data *))
 719 {
 720         struct cvfs_private *p = ntvfs->private_data;
 721         struct smb2_find f;
 722         enum smb_search_data_level smb2_level;
 723         unsigned int count, i;
 724         union smb_search_data *data;
 725         NTSTATUS status;
 726
 727         if (io->generic.level != RAW_SEARCH_TRANS2) {
 728                 DEBUG(0,("We only support trans2 search in smb2 backend\n"));
 729                 return NT_STATUS_NOT_SUPPORTED;
 730         }
 731
 732         switch (io->generic.data_level) {
 733         case RAW_SEARCH_DATA_DIRECTORY_INFO:
 734                 smb2_level = SMB2_FIND_DIRECTORY_INFO;
 735                 break;
 736         case RAW_SEARCH_DATA_FULL_DIRECTORY_INFO:
 737                 smb2_level = SMB2_FIND_FULL_DIRECTORY_INFO;
 738                 break;
 739         case RAW_SEARCH_DATA_BOTH_DIRECTORY_INFO:
 740                 smb2_level = SMB2_FIND_BOTH_DIRECTORY_INFO;
 741                 break;
 742         case RAW_SEARCH_DATA_NAME_INFO:
 743                 smb2_level = SMB2_FIND_NAME_INFO;
 744                 break;
 745         case RAW_SEARCH_DATA_ID_FULL_DIRECTORY_INFO:
 746                 smb2_level = SMB2_FIND_ID_FULL_DIRECTORY_INFO;
 747                 break;
 748         case RAW_SEARCH_DATA_ID_BOTH_DIRECTORY_INFO:
 749                 smb2_level = SMB2_FIND_ID_BOTH_DIRECTORY_INFO;
 750                 break;
 751         default:
 752                 DEBUG(0,("Unsupported search level %u for smb2 backend\n",
 753                          (unsigned)io->generic.data_level));
 754                 return NT_STATUS_INVALID_INFO_CLASS;
 755         }
 756
 757         /* we do the search on the roothandle. This only works because
 758            search is synchronous, otherwise we'd have no way to
 759            distinguish multiple searches happening at once
 760         */
 761         ZERO_STRUCT(f);
 762         f.in.file.handle        = p->roothandle;
 763         f.in.level              = smb2_level;
 764         f.in.pattern            = io->t2ffirst.in.pattern;
 765         while (f.in.pattern[0] == '\\') {
 766                 f.in.pattern++;
 767         }
 768         f.in.continue_flags     = 0;
 769         f.in.max_response_size  = 0x10000;
 770
 771         status = smb2_find_level(p->tree, req, &f, &count, &data);
 772         NT_STATUS_NOT_OK_RETURN(status);
 773
 774         for (i=0;i<count;i++) {
 775                 if (!callback(search_private, &data[i])) break;
 776         }
 777
 778         io->t2ffirst.out.handle = 0;
 779         io->t2ffirst.out.count = i;
 780         /* TODO: fix end_of_file */
 781         io->t2ffirst.out.end_of_search = 1;
 782
 783         talloc_free(data);
 784
 785         return NT_STATUS_OK;
 786 }
 787
 788 /* continue a search */
 789 static NTSTATUS cvfs_search_next(struct ntvfs_module_context *ntvfs,
 790                                  struct ntvfs_request *req, union smb_search_next *io,
 791                                  void *search_private,
 792                                  bool (*callback)(void *, const union smb_search_data *))
 793 {
 794         return NT_STATUS_NOT_IMPLEMENTED;
 795 }
 796
 797 /* close a search */
 798 static NTSTATUS cvfs_search_close(struct ntvfs_module_context *ntvfs,
 799                                   struct ntvfs_request *req, union smb_search_close *io)
 800 {
 801         return NT_STATUS_NOT_IMPLEMENTED;
 802 }
 803
 804 /* SMBtrans - not used on file shares */
 805 static NTSTATUS cvfs_trans(struct ntvfs_module_context *ntvfs,
 806                            struct ntvfs_request *req,
 807                            struct smb_trans2 *trans2)
 808 {
 809         return NT_STATUS_ACCESS_DENIED;
 810 }
 811
 812 /* change notify request - always async */
 813 static NTSTATUS cvfs_notify(struct ntvfs_module_context *ntvfs,
 814                             struct ntvfs_request *req,
 815                             union smb_notify *io)
 816 {
 817         return NT_STATUS_NOT_IMPLEMENTED;
 818 }
 819
 820 /*
 821   initialise the CIFS->CIFS backend, registering ourselves with the ntvfs subsystem
 822  */
 823 NTSTATUS ntvfs_smb2_init(void)
 824 {
 825         NTSTATUS ret;
 826         struct ntvfs_ops ops;
 827         NTVFS_CURRENT_CRITICAL_SIZES(vers);
 828
 829         ZERO_STRUCT(ops);
 830
 831         /* fill in the name and type */
 832         ops.name = "smb2";
 833         ops.type = NTVFS_DISK;
 834
 835         /* fill in all the operations */
 836         ops.connect = cvfs_connect;
 837         ops.disconnect = cvfs_disconnect;
 838         ops.unlink = cvfs_unlink;
 839         ops.chkpath = cvfs_chkpath;
 840         ops.qpathinfo = cvfs_qpathinfo;
 841         ops.setpathinfo = cvfs_setpathinfo;
 842         ops.open = cvfs_open;
 843         ops.mkdir = cvfs_mkdir;
 844         ops.rmdir = cvfs_rmdir;
 845         ops.rename = cvfs_rename;
 846         ops.copy = cvfs_copy;
 847         ops.ioctl = cvfs_ioctl;
 848         ops.read = cvfs_read;
 849         ops.write = cvfs_write;
 850         ops.seek = cvfs_seek;
 851         ops.flush = cvfs_flush;
 852         ops.close = cvfs_close;
 853         ops.exit = cvfs_exit;
 854         ops.lock = cvfs_lock;
 855         ops.setfileinfo = cvfs_setfileinfo;
 856         ops.qfileinfo = cvfs_qfileinfo;
 857         ops.fsinfo = cvfs_fsinfo;
 858         ops.lpq = cvfs_lpq;
 859         ops.search_first = cvfs_search_first;
 860         ops.search_next = cvfs_search_next;
 861         ops.search_close = cvfs_search_close;
 862         ops.trans = cvfs_trans;
 863         ops.logoff = cvfs_logoff;
 864         ops.async_setup = cvfs_async_setup;
 865         ops.cancel = cvfs_cancel;
 866         ops.notify = cvfs_notify;
 867
 868         /* register ourselves with the NTVFS subsystem. We register
 869            under the name 'smb2'. */
 870         ret = ntvfs_register(&ops, &vers);
 871
 872         if (!NT_STATUS_IS_OK(ret)) {
 873                 DEBUG(0,("Failed to register SMB2 backend\n"));
 874         }
 875
 876         return ret;
 877 }