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 struct cvfs_file {
  45         struct cvfs_file *prev, *next;
  46         uint16_t fnum;
  47         struct ntvfs_handle *h;
  48 };
  49
  50 /* this is stored in ntvfs_private */
  51 struct cvfs_private {
  52         struct smb2_tree *tree;
  53         struct smb2_transport *transport;
  54         struct ntvfs_module_context *ntvfs;
  55         struct async_info *pending;
  56         struct cvfs_file *files;
  57
  58         /* a handle on the root of the share */
  59         /* TODO: leaving this handle open could prevent other users
  60            from opening the share with exclusive access. We probably
  61            need to open it on demand */
  62         struct smb2_handle roothandle;
  63 };
  64
  65
  66 /* a structure used to pass information to an async handler */
  67 struct async_info {
  68         struct async_info *next, *prev;
  69         struct cvfs_private *cvfs;
  70         struct ntvfs_request *req;
  71         void *c_req;
  72         struct composite_context *c_comp;
  73         struct cvfs_file *f;
  74         void *parms;
  75 };
  76
  77 #define SETUP_FILE_HERE(f) do { \
  78         f = ntvfs_handle_get_backend_data(io->generic.in.file.ntvfs, ntvfs); \
  79         if (!f) return NT_STATUS_INVALID_HANDLE; \
  80         io->generic.in.file.fnum = f->fnum; \
  81 } while (0)
  82
  83 #define SETUP_FILE do { \
  84         struct cvfs_file *f; \
  85         SETUP_FILE_HERE(f); \
  86 } while (0)
  87
  88 #define SMB2_SERVER             "smb2:server"
  89 #define SMB2_USER               "smb2:user"
  90 #define SMB2_PASSWORD           "smb2:password"
  91 #define SMB2_DOMAIN             "smb2:domain"
  92 #define SMB2_SHARE              "smb2:share"
  93 #define SMB2_USE_MACHINE_ACCT   "smb2:use-machine-account"
  94
  95 #define SMB2_USE_MACHINE_ACCT_DEFAULT   false
  96
  97 /*
  98   a handler for oplock break events from the server - these need to be passed
  99   along to the client
 100  */
 101 static bool oplock_handler(struct smbcli_transport *transport, uint16_t tid, uint16_t fnum, uint8_t level, void *p_private)
 102 {
 103         struct cvfs_private *p = p_private;
 104         NTSTATUS status;
 105         struct ntvfs_handle *h = NULL;
 106         struct cvfs_file *f;
 107
 108         for (f=p->files; f; f=f->next) {
 109                 if (f->fnum != fnum) continue;
 110                 h = f->h;
 111                 break;
 112         }
 113
 114         if (!h) {
 115                 DEBUG(5,("vfs_smb2: ignoring oplock break level %d for fnum %d\n", level, fnum));
 116                 return true;
 117         }
 118
 119         DEBUG(5,("vfs_smb2: sending oplock break level %d for fnum %d\n", level, fnum));
 120         status = ntvfs_send_oplock_break(p->ntvfs, h, level);
 121         if (!NT_STATUS_IS_OK(status)) return false;
 122         return true;
 123 }
 124
 125 /*
 126   return a handle to the root of the share
 127 */
 128 static NTSTATUS smb2_get_roothandle(struct smb2_tree *tree, struct smb2_handle *handle)
 129 {
 130         struct smb2_create io;
 131         NTSTATUS status;
 132
 133         ZERO_STRUCT(io);
 134         io.in.oplock_level = 0;
 135         io.in.desired_access = SEC_STD_SYNCHRONIZE | SEC_DIR_READ_ATTRIBUTE | SEC_DIR_LIST;
 136         io.in.file_attributes   = 0;
 137         io.in.create_disposition = NTCREATEX_DISP_OPEN;
 138         io.in.share_access =
 139                 NTCREATEX_SHARE_ACCESS_READ |
 140                 NTCREATEX_SHARE_ACCESS_WRITE|
 141                 NTCREATEX_SHARE_ACCESS_DELETE;
 142         io.in.create_options = 0;
 143         io.in.fname = NULL;
 144
 145         status = smb2_create(tree, tree, &io);
 146         NT_STATUS_NOT_OK_RETURN(status);
 147
 148         *handle = io.out.file.handle;
 149
 150         return NT_STATUS_OK;
 151 }
 152
 153 /*
 154   connect to a share - used when a tree_connect operation comes in.
 155 */
 156 static NTSTATUS cvfs_connect(struct ntvfs_module_context *ntvfs,
 157                              struct ntvfs_request *req,
 158                              union smb_tcon* tcon)
 159 {
 160         NTSTATUS status;
 161         struct cvfs_private *p;
 162         const char *host, *user, *pass, *domain, *remote_share, *sharename;
 163         struct composite_context *creq;
 164         struct share_config *scfg = ntvfs->ctx->config;
 165         struct smb2_tree *tree;
 166         struct cli_credentials *credentials;
 167         bool machine_account;
 168         struct smbcli_options options;
 169
 170         switch (tcon->generic.level) {
 171         case RAW_TCON_TCON:
 172                 sharename = tcon->tcon.in.service;
 173                 break;
 174         case RAW_TCON_TCONX:
 175                 sharename = tcon->tconx.in.path;
 176                 break;
 177         case RAW_TCON_SMB2:
 178                 sharename = tcon->smb2.in.path;
 179                 break;
 180         default:
 181                 return NT_STATUS_INVALID_LEVEL;
 182         }
 183
 184         if (strncmp(sharename, "\\\\", 2) == 0) {
 185                 char *str = strchr(sharename+2, '\\');
 186                 if (str) {
 187                         sharename = str + 1;
 188                 }
 189         }
 190
 191         /* Here we need to determine which server to connect to.
 192          * For now we use parametric options, type cifs.
 193          * Later we will use security=server and auth_server.c.
 194          */
 195         host = share_string_option(scfg, SMB2_SERVER, NULL);
 196         user = share_string_option(scfg, SMB2_USER, NULL);
 197         pass = share_string_option(scfg, SMB2_PASSWORD, NULL);
 198         domain = share_string_option(scfg, SMB2_DOMAIN, NULL);
 199         remote_share = share_string_option(scfg, SMB2_SHARE, NULL);
 200         if (!remote_share) {
 201                 remote_share = sharename;
 202         }
 203
 204         machine_account = share_bool_option(scfg, SMB2_USE_MACHINE_ACCT, SMB2_USE_MACHINE_ACCT_DEFAULT);
 205
 206         p = talloc_zero(ntvfs, struct cvfs_private);
 207         if (!p) {
 208                 return NT_STATUS_NO_MEMORY;
 209         }
 210
 211         ntvfs->private_data = p;
 212
 213         if (!host) {
 214                 DEBUG(1,("CIFS backend: You must supply server\n"));
 215                 return NT_STATUS_INVALID_PARAMETER;
 216         }
 217
 218         if (user && pass) {
 219                 DEBUG(5, ("CIFS backend: Using specified password\n"));
 220                 credentials = cli_credentials_init(p);
 221                 if (!credentials) {
 222                         return NT_STATUS_NO_MEMORY;
 223                 }
 224                 cli_credentials_set_conf(credentials, ntvfs->ctx->lp_ctx);
 225                 cli_credentials_set_username(credentials, user, CRED_SPECIFIED);
 226                 if (domain) {
 227                         cli_credentials_set_domain(credentials, domain, CRED_SPECIFIED);
 228                 }
 229                 cli_credentials_set_password(credentials, pass, CRED_SPECIFIED);
 230         } else if (machine_account) {
 231                 DEBUG(5, ("CIFS backend: Using machine account\n"));
 232                 credentials = cli_credentials_init(p);
 233                 cli_credentials_set_conf(credentials, ntvfs->ctx->lp_ctx);
 234                 if (domain) {
 235                         cli_credentials_set_domain(credentials, domain, CRED_SPECIFIED);
 236                 }
 237                 status = cli_credentials_set_machine_account(credentials, ntvfs->ctx->lp_ctx);
 238                 if (!NT_STATUS_IS_OK(status)) {
 239                         return status;
 240                 }
 241         } else if (req->session_info->credentials) {
 242                 DEBUG(5, ("CIFS backend: Using delegated credentials\n"));
 243                 credentials = req->session_info->credentials;
 244         } else {
 245                 DEBUG(1,("CIFS backend: NO delegated credentials found: You must supply server, user and password or the client must supply delegated credentials\n"));
 246                 return NT_STATUS_INVALID_PARAMETER;
 247         }
 248
 249         lp_smbcli_options(ntvfs->ctx->lp_ctx, &options);
 250
 251         creq = smb2_connect_send(p, host,
 252                         lp_parm_string_list(p, ntvfs->ctx->lp_ctx, NULL, "smb2", "ports", NULL),
 253                                 remote_share,
 254                                  lp_resolve_context(ntvfs->ctx->lp_ctx),
 255                                  credentials,
 256                                  ntvfs->ctx->event_ctx, &options,
 257                                  lp_socket_options(ntvfs->ctx->lp_ctx),
 258                                  lp_gensec_settings(p, ntvfs->ctx->lp_ctx)
 259                                  );
 260
 261         status = smb2_connect_recv(creq, p, &tree);
 262         NT_STATUS_NOT_OK_RETURN(status);
 263
 264         status = smb2_get_roothandle(tree, &p->roothandle);
 265         NT_STATUS_NOT_OK_RETURN(status);
 266
 267         p->tree = tree;
 268         p->transport = p->tree->session->transport;
 269         p->ntvfs = ntvfs;
 270
 271         ntvfs->ctx->fs_type = talloc_strdup(ntvfs->ctx, "NTFS");
 272         NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->fs_type);
 273         ntvfs->ctx->dev_type = talloc_strdup(ntvfs->ctx, "A:");
 274         NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->dev_type);
 275
 276         if (tcon->generic.level == RAW_TCON_TCONX) {
 277                 tcon->tconx.out.fs_type = ntvfs->ctx->fs_type;
 278                 tcon->tconx.out.dev_type = ntvfs->ctx->dev_type;
 279         }
 280
 281         /* we need to receive oplock break requests from the server */
 282         /* TODO: enable oplocks
 283         smbcli_oplock_handler(p->transport, oplock_handler, p);
 284         */
 285         return NT_STATUS_OK;
 286 }
 287
 288 /*
 289   disconnect from a share
 290 */
 291 static NTSTATUS cvfs_disconnect(struct ntvfs_module_context *ntvfs)
 292 {
 293         struct cvfs_private *p = ntvfs->private_data;
 294         struct async_info *a, *an;
 295
 296         /* first cleanup pending requests */
 297         for (a=p->pending; a; a = an) {
 298                 an = a->next;
 299                 talloc_free(a->c_req);
 300                 talloc_free(a);
 301         }
 302
 303         talloc_free(p);
 304         ntvfs->private_data = NULL;
 305
 306         return NT_STATUS_OK;
 307 }
 308
 309 /*
 310   destroy an async info structure
 311 */
 312 static int async_info_destructor(struct async_info *async)
 313 {
 314         DLIST_REMOVE(async->cvfs->pending, async);
 315         return 0;
 316 }
 317
 318 /*
 319   a handler for simple async SMB2 replies
 320   this handler can only be used for functions that don't return any
 321   parameters (those that just return a status code)
 322  */
 323 static void async_simple_smb2(struct smb2_request *c_req)
 324 {
 325         struct async_info *async = c_req->async.private_data;
 326         struct ntvfs_request *req = async->req;
 327
 328         smb2_request_receive(c_req);
 329         req->async_states->status = smb2_request_destroy(c_req);
 330         talloc_free(async);
 331         req->async_states->send_fn(req);
 332 }
 333
 334 /*
 335   a handler for simple async composite replies
 336   this handler can only be used for functions that don't return any
 337   parameters (those that just return a status code)
 338  */
 339 static void async_simple_composite(struct composite_context *c_req)
 340 {
 341         struct async_info *async = c_req->async.private_data;
 342         struct ntvfs_request *req = async->req;
 343
 344         req->async_states->status = composite_wait_free(c_req);
 345         talloc_free(async);
 346         req->async_states->send_fn(req);
 347 }
 348
 349
 350 /* save some typing for the simple functions */
 351 #define ASYNC_RECV_TAIL_F(io, async_fn, file) do { \
 352         if (!c_req) return NT_STATUS_UNSUCCESSFUL; \
 353         { \
 354                 struct async_info *async; \
 355                 async = talloc(req, struct async_info); \
 356                 if (!async) return NT_STATUS_NO_MEMORY; \
 357                 async->parms = io; \
 358                 async->req = req; \
 359                 async->f = file; \
 360                 async->cvfs = p; \
 361                 async->c_req = c_req; \
 362                 DLIST_ADD(p->pending, async); \
 363                 c_req->async.private_data = async; \
 364                 talloc_set_destructor(async, async_info_destructor); \
 365         } \
 366         c_req->async.fn = async_fn; \
 367         req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC; \
 368         return NT_STATUS_OK; \
 369 } while (0)
 370
 371 #define ASYNC_RECV_TAIL(io, async_fn) ASYNC_RECV_TAIL_F(io, async_fn, NULL)
 372
 373 #define SIMPLE_ASYNC_TAIL ASYNC_RECV_TAIL(NULL, async_simple_smb2)
 374 #define SIMPLE_COMPOSITE_TAIL ASYNC_RECV_TAIL(NULL, async_simple_composite)
 375
 376 #define CHECK_ASYNC(req) do { \
 377         if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) { \
 378                 DEBUG(0,("SMB2 proxy backend does not support sync operation at %s\n", \
 379                          __location__)); \
 380                 return NT_STATUS_NOT_IMPLEMENTED; \
 381         }} while (0)
 382
 383 /*
 384   delete a file - the dirtype specifies the file types to include in the search.
 385   The name can contain CIFS wildcards, but rarely does (except with OS/2 clients)
 386
 387   BUGS:
 388      - doesn't handle wildcards
 389      - doesn't obey attrib restrictions
 390 */
 391 static NTSTATUS cvfs_unlink(struct ntvfs_module_context *ntvfs,
 392                             struct ntvfs_request *req, union smb_unlink *unl)
 393 {
 394         struct cvfs_private *p = ntvfs->private_data;
 395         struct composite_context *c_req;
 396
 397         CHECK_ASYNC(req);
 398
 399         c_req = smb2_composite_unlink_send(p->tree, unl);
 400
 401         SIMPLE_COMPOSITE_TAIL;
 402 }
 403
 404 /*
 405   ioctl interface
 406 */
 407 static NTSTATUS cvfs_ioctl(struct ntvfs_module_context *ntvfs,
 408                            struct ntvfs_request *req, union smb_ioctl *io)
 409 {
 410         return NT_STATUS_NOT_IMPLEMENTED;
 411 }
 412
 413 /*
 414   check if a directory exists
 415 */
 416 static NTSTATUS cvfs_chkpath(struct ntvfs_module_context *ntvfs,
 417                              struct ntvfs_request *req, union smb_chkpath *cp)
 418 {
 419         struct cvfs_private *p = ntvfs->private_data;
 420         struct smb2_request *c_req;
 421         struct smb2_find f;
 422
 423         CHECK_ASYNC(req);
 424
 425         /* SMB2 doesn't have a chkpath operation, and also doesn't
 426          have a query path info call, so the best seems to be to do a
 427          find call, using the roothandle we established at connect
 428          time */
 429         ZERO_STRUCT(f);
 430         f.in.file.handle        = p->roothandle;
 431         f.in.level              = SMB2_FIND_DIRECTORY_INFO;
 432         f.in.pattern            = cp->chkpath.in.path;
 433         /* SMB2 find doesn't accept \ or the empty string - this is the best
 434            approximation */
 435         if (strcmp(f.in.pattern, "\\") == 0 ||
 436             strcmp(f.in.pattern, "") == 0) {
 437                 f.in.pattern            = "?";
 438         }
 439         f.in.continue_flags     = SMB2_CONTINUE_FLAG_SINGLE | SMB2_CONTINUE_FLAG_RESTART;
 440         f.in.max_response_size  = 0x1000;
 441
 442         c_req = smb2_find_send(p->tree, &f);
 443
 444         SIMPLE_ASYNC_TAIL;
 445 }
 446
 447 /*
 448   return info on a pathname
 449 */
 450 static NTSTATUS cvfs_qpathinfo(struct ntvfs_module_context *ntvfs,
 451                                struct ntvfs_request *req, union smb_fileinfo *info)
 452 {
 453         return NT_STATUS_NOT_IMPLEMENTED;
 454 }
 455
 456 /*
 457   query info on a open file
 458 */
 459 static NTSTATUS cvfs_qfileinfo(struct ntvfs_module_context *ntvfs,
 460                                struct ntvfs_request *req, union smb_fileinfo *io)
 461 {
 462         return NT_STATUS_NOT_IMPLEMENTED;
 463 }
 464
 465
 466 /*
 467   set info on a pathname
 468 */
 469 static NTSTATUS cvfs_setpathinfo(struct ntvfs_module_context *ntvfs,
 470                                  struct ntvfs_request *req, union smb_setfileinfo *st)
 471 {
 472         return NT_STATUS_NOT_IMPLEMENTED;
 473 }
 474
 475
 476 /*
 477   open a file
 478 */
 479 static NTSTATUS cvfs_open(struct ntvfs_module_context *ntvfs,
 480                           struct ntvfs_request *req, union smb_open *io)
 481 {
 482         return NT_STATUS_NOT_IMPLEMENTED;
 483 }
 484
 485 /*
 486   create a directory
 487 */
 488 static NTSTATUS cvfs_mkdir(struct ntvfs_module_context *ntvfs,
 489                            struct ntvfs_request *req, union smb_mkdir *md)
 490 {
 491         struct cvfs_private *p = ntvfs->private_data;
 492         struct composite_context *c_req;
 493
 494         CHECK_ASYNC(req);
 495
 496         c_req = smb2_composite_mkdir_send(p->tree, md);
 497
 498         SIMPLE_COMPOSITE_TAIL;
 499 }
 500
 501 /*
 502   remove a directory
 503 */
 504 static NTSTATUS cvfs_rmdir(struct ntvfs_module_context *ntvfs,
 505                            struct ntvfs_request *req, struct smb_rmdir *rd)
 506 {
 507         struct cvfs_private *p = ntvfs->private_data;
 508         struct composite_context *c_req;
 509
 510         CHECK_ASYNC(req);
 511
 512         c_req = smb2_composite_rmdir_send(p->tree, rd);
 513
 514         SIMPLE_COMPOSITE_TAIL;
 515 }
 516
 517 /*
 518   rename a set of files
 519 */
 520 static NTSTATUS cvfs_rename(struct ntvfs_module_context *ntvfs,
 521                             struct ntvfs_request *req, union smb_rename *ren)
 522 {
 523         return NT_STATUS_NOT_IMPLEMENTED;
 524 }
 525
 526 /*
 527   copy a set of files
 528 */
 529 static NTSTATUS cvfs_copy(struct ntvfs_module_context *ntvfs,
 530                           struct ntvfs_request *req, struct smb_copy *cp)
 531 {
 532         return NT_STATUS_NOT_SUPPORTED;
 533 }
 534
 535 /*
 536   read from a file
 537 */
 538 static NTSTATUS cvfs_read(struct ntvfs_module_context *ntvfs,
 539                           struct ntvfs_request *req, union smb_read *io)
 540 {
 541         return NT_STATUS_NOT_IMPLEMENTED;
 542 }
 543
 544 /*
 545   write to a file
 546 */
 547 static NTSTATUS cvfs_write(struct ntvfs_module_context *ntvfs,
 548                            struct ntvfs_request *req, union smb_write *io)
 549 {
 550         return NT_STATUS_NOT_IMPLEMENTED;
 551 }
 552
 553 /*
 554   seek in a file
 555 */
 556 static NTSTATUS cvfs_seek(struct ntvfs_module_context *ntvfs,
 557                           struct ntvfs_request *req,
 558                           union smb_seek *io)
 559 {
 560         return NT_STATUS_NOT_IMPLEMENTED;
 561 }
 562
 563 /*
 564   flush a file
 565 */
 566 static NTSTATUS cvfs_flush(struct ntvfs_module_context *ntvfs,
 567                            struct ntvfs_request *req,
 568                            union smb_flush *io)
 569 {
 570         return NT_STATUS_NOT_IMPLEMENTED;
 571 }
 572
 573 /*
 574   close a file
 575 */
 576 static NTSTATUS cvfs_close(struct ntvfs_module_context *ntvfs,
 577                            struct ntvfs_request *req, union smb_close *io)
 578 {
 579         return NT_STATUS_NOT_IMPLEMENTED;
 580 }
 581
 582 /*
 583   exit - closing files open by the pid
 584 */
 585 static NTSTATUS cvfs_exit(struct ntvfs_module_context *ntvfs,
 586                           struct ntvfs_request *req)
 587 {
 588         return NT_STATUS_NOT_IMPLEMENTED;
 589 }
 590
 591 /*
 592   logoff - closing files open by the user
 593 */
 594 static NTSTATUS cvfs_logoff(struct ntvfs_module_context *ntvfs,
 595                             struct ntvfs_request *req)
 596 {
 597         /* we can't do this right in the cifs backend .... */
 598         return NT_STATUS_OK;
 599 }
 600
 601 /*
 602   setup for an async call - nothing to do yet
 603 */
 604 static NTSTATUS cvfs_async_setup(struct ntvfs_module_context *ntvfs,
 605                                  struct ntvfs_request *req,
 606                                  void *private_data)
 607 {
 608         return NT_STATUS_OK;
 609 }
 610
 611 /*
 612   cancel an async call
 613 */
 614 static NTSTATUS cvfs_cancel(struct ntvfs_module_context *ntvfs,
 615                             struct ntvfs_request *req)
 616 {
 617         return NT_STATUS_NOT_IMPLEMENTED;
 618 }
 619
 620 /*
 621   lock a byte range
 622 */
 623 static NTSTATUS cvfs_lock(struct ntvfs_module_context *ntvfs,
 624                           struct ntvfs_request *req, union smb_lock *io)
 625 {
 626         return NT_STATUS_NOT_IMPLEMENTED;
 627 }
 628
 629 /*
 630   set info on a open file
 631 */
 632 static NTSTATUS cvfs_setfileinfo(struct ntvfs_module_context *ntvfs,
 633                                  struct ntvfs_request *req,
 634                                  union smb_setfileinfo *io)
 635 {
 636         return NT_STATUS_NOT_IMPLEMENTED;
 637 }
 638
 639
 640 /*
 641   a handler for async fsinfo replies
 642  */
 643 static void async_fsinfo(struct smb2_request *c_req)
 644 {
 645         struct async_info *async = c_req->async.private_data;
 646         struct ntvfs_request *req = async->req;
 647         req->async_states->status = smb2_getinfo_fs_recv(c_req, req, async->parms);
 648         talloc_free(async);
 649         req->async_states->send_fn(req);
 650 }
 651
 652 /*
 653   return filesystem space info
 654 */
 655 static NTSTATUS cvfs_fsinfo(struct ntvfs_module_context *ntvfs,
 656                             struct ntvfs_request *req, union smb_fsinfo *fs)
 657 {
 658         struct cvfs_private *p = ntvfs->private_data;
 659         struct smb2_request *c_req;
 660         enum smb_fsinfo_level level = fs->generic.level;
 661
 662         CHECK_ASYNC(req);
 663
 664         switch (level) {
 665                 /* some levels go straight through */
 666         case RAW_QFS_VOLUME_INFORMATION:
 667         case RAW_QFS_SIZE_INFORMATION:
 668         case RAW_QFS_DEVICE_INFORMATION:
 669         case RAW_QFS_ATTRIBUTE_INFORMATION:
 670         case RAW_QFS_QUOTA_INFORMATION:
 671         case RAW_QFS_FULL_SIZE_INFORMATION:
 672         case RAW_QFS_OBJECTID_INFORMATION:
 673                 break;
 674
 675                 /* some get mapped */
 676         case RAW_QFS_VOLUME_INFO:
 677                 level = RAW_QFS_VOLUME_INFORMATION;
 678                 break;
 679         case RAW_QFS_SIZE_INFO:
 680                 level = RAW_QFS_SIZE_INFORMATION;
 681                 break;
 682         case RAW_QFS_DEVICE_INFO:
 683                 level = RAW_QFS_DEVICE_INFORMATION;
 684                 break;
 685         case RAW_QFS_ATTRIBUTE_INFO:
 686                 level = RAW_QFS_ATTRIBUTE_INFO;
 687                 break;
 688
 689         default:
 690                 /* the rest get refused for now */
 691                 DEBUG(0,("fsinfo level %u not possible on SMB2\n",
 692                          (unsigned)fs->generic.level));
 693                 break;
 694         }
 695
 696         fs->generic.level = level;
 697         fs->generic.handle = p->roothandle;
 698
 699         c_req = smb2_getinfo_fs_send(p->tree, fs);
 700
 701         ASYNC_RECV_TAIL(fs, async_fsinfo);
 702 }
 703
 704 /*
 705   return print queue info
 706 */
 707 static NTSTATUS cvfs_lpq(struct ntvfs_module_context *ntvfs,
 708                          struct ntvfs_request *req, union smb_lpq *lpq)
 709 {
 710         return NT_STATUS_NOT_SUPPORTED;
 711 }
 712
 713 /*
 714    list files in a directory matching a wildcard pattern
 715 */
 716 static NTSTATUS cvfs_search_first(struct ntvfs_module_context *ntvfs,
 717                                   struct ntvfs_request *req, union smb_search_first *io,
 718                                   void *search_private,
 719                                   bool (*callback)(void *, const union smb_search_data *))
 720 {
 721         struct cvfs_private *p = ntvfs->private_data;
 722         struct smb2_find f;
 723         enum smb_search_data_level smb2_level;
 724         uint_t count, i;
 725         union smb_search_data *data;
 726         NTSTATUS status;
 727
 728         if (io->generic.level != RAW_SEARCH_TRANS2) {
 729                 DEBUG(0,("We only support trans2 search in smb2 backend\n"));
 730                 return NT_STATUS_NOT_SUPPORTED;
 731         }
 732
 733         switch (io->generic.data_level) {
 734         case RAW_SEARCH_DATA_DIRECTORY_INFO:
 735                 smb2_level = SMB2_FIND_DIRECTORY_INFO;
 736                 break;
 737         case RAW_SEARCH_DATA_FULL_DIRECTORY_INFO:
 738                 smb2_level = SMB2_FIND_FULL_DIRECTORY_INFO;
 739                 break;
 740         case RAW_SEARCH_DATA_BOTH_DIRECTORY_INFO:
 741                 smb2_level = SMB2_FIND_BOTH_DIRECTORY_INFO;
 742                 break;
 743         case RAW_SEARCH_DATA_NAME_INFO:
 744                 smb2_level = SMB2_FIND_NAME_INFO;
 745                 break;
 746         case RAW_SEARCH_DATA_ID_FULL_DIRECTORY_INFO:
 747                 smb2_level = SMB2_FIND_ID_FULL_DIRECTORY_INFO;
 748                 break;
 749         case RAW_SEARCH_DATA_ID_BOTH_DIRECTORY_INFO:
 750                 smb2_level = SMB2_FIND_ID_BOTH_DIRECTORY_INFO;
 751                 break;
 752         default:
 753                 DEBUG(0,("Unsupported search level %u for smb2 backend\n",
 754                          (unsigned)io->generic.data_level));
 755                 return NT_STATUS_INVALID_INFO_CLASS;
 756         }
 757
 758         /* we do the search on the roothandle. This only works because
 759            search is synchronous, otherwise we'd have no way to
 760            distinguish multiple searches happening at once
 761         */
 762         ZERO_STRUCT(f);
 763         f.in.file.handle        = p->roothandle;
 764         f.in.level              = smb2_level;
 765         f.in.pattern            = io->t2ffirst.in.pattern;
 766         while (f.in.pattern[0] == '\\') {
 767                 f.in.pattern++;
 768         }
 769         f.in.continue_flags     = 0;
 770         f.in.max_response_size  = 0x10000;
 771
 772         status = smb2_find_level(p->tree, req, &f, &count, &data);
 773         NT_STATUS_NOT_OK_RETURN(status);
 774
 775         for (i=0;i<count;i++) {
 776                 if (!callback(search_private, &data[i])) break;
 777         }
 778
 779         io->t2ffirst.out.handle = 0;
 780         io->t2ffirst.out.count = i;
 781         /* TODO: fix end_of_file */
 782         io->t2ffirst.out.end_of_search = 1;
 783
 784         talloc_free(data);
 785
 786         return NT_STATUS_OK;
 787 }
 788
 789 /* continue a search */
 790 static NTSTATUS cvfs_search_next(struct ntvfs_module_context *ntvfs,
 791                                  struct ntvfs_request *req, union smb_search_next *io,
 792                                  void *search_private,
 793                                  bool (*callback)(void *, const union smb_search_data *))
 794 {
 795         return NT_STATUS_NOT_IMPLEMENTED;
 796 }
 797
 798 /* close a search */
 799 static NTSTATUS cvfs_search_close(struct ntvfs_module_context *ntvfs,
 800                                   struct ntvfs_request *req, union smb_search_close *io)
 801 {
 802         return NT_STATUS_NOT_IMPLEMENTED;
 803 }
 804
 805 /* SMBtrans - not used on file shares */
 806 static NTSTATUS cvfs_trans(struct ntvfs_module_context *ntvfs,
 807                            struct ntvfs_request *req,
 808                            struct smb_trans2 *trans2)
 809 {
 810         return NT_STATUS_ACCESS_DENIED;
 811 }
 812
 813 /* change notify request - always async */
 814 static NTSTATUS cvfs_notify(struct ntvfs_module_context *ntvfs,
 815                             struct ntvfs_request *req,
 816                             union smb_notify *io)
 817 {
 818         return NT_STATUS_NOT_IMPLEMENTED;
 819 }
 820
 821 /*
 822   initialise the CIFS->CIFS backend, registering ourselves with the ntvfs subsystem
 823  */
 824 NTSTATUS ntvfs_smb2_init(void)
 825 {
 826         NTSTATUS ret;
 827         struct ntvfs_ops ops;
 828         NTVFS_CURRENT_CRITICAL_SIZES(vers);
 829
 830         ZERO_STRUCT(ops);
 831
 832         /* fill in the name and type */
 833         ops.name = "smb2";
 834         ops.type = NTVFS_DISK;
 835
 836         /* fill in all the operations */
 837         ops.connect = cvfs_connect;
 838         ops.disconnect = cvfs_disconnect;
 839         ops.unlink = cvfs_unlink;
 840         ops.chkpath = cvfs_chkpath;
 841         ops.qpathinfo = cvfs_qpathinfo;
 842         ops.setpathinfo = cvfs_setpathinfo;
 843         ops.open = cvfs_open;
 844         ops.mkdir = cvfs_mkdir;
 845         ops.rmdir = cvfs_rmdir;
 846         ops.rename = cvfs_rename;
 847         ops.copy = cvfs_copy;
 848         ops.ioctl = cvfs_ioctl;
 849         ops.read = cvfs_read;
 850         ops.write = cvfs_write;
 851         ops.seek = cvfs_seek;
 852         ops.flush = cvfs_flush;
 853         ops.close = cvfs_close;
 854         ops.exit = cvfs_exit;
 855         ops.lock = cvfs_lock;
 856         ops.setfileinfo = cvfs_setfileinfo;
 857         ops.qfileinfo = cvfs_qfileinfo;
 858         ops.fsinfo = cvfs_fsinfo;
 859         ops.lpq = cvfs_lpq;
 860         ops.search_first = cvfs_search_first;
 861         ops.search_next = cvfs_search_next;
 862         ops.search_close = cvfs_search_close;
 863         ops.trans = cvfs_trans;
 864         ops.logoff = cvfs_logoff;
 865         ops.async_setup = cvfs_async_setup;
 866         ops.cancel = cvfs_cancel;
 867         ops.notify = cvfs_notify;
 868
 869         /* register ourselves with the NTVFS subsystem. We register
 870            under the name 'smb2'. */
 871         ret = ntvfs_register(&ops, &vers);
 872
 873         if (!NT_STATUS_IS_OK(ret)) {
 874                 DEBUG(0,("Failed to register SMB2 backend\n"));
 875         }
 876
 877         return ret;
 878 }