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 #if 0
 104 static bool oplock_handler(struct smbcli_transport *transport, uint16_t tid, uint16_t fnum, uint8_t level, void *p_private)
 105 {
 106         struct cvfs_private *p = p_private;
 107         NTSTATUS status;
 108         struct ntvfs_handle *h = NULL;
 109         struct cvfs_file *f;
 110
 111         for (f=p->files; f; f=f->next) {
 112                 if (f->fnum != fnum) continue;
 113                 h = f->h;
 114                 break;
 115         }
 116
 117         if (!h) {
 118                 DEBUG(5,("vfs_smb2: ignoring oplock break level %d for fnum %d\n", level, fnum));
 119                 return true;
 120         }
 121
 122         DEBUG(5,("vfs_smb2: sending oplock break level %d for fnum %d\n", level, fnum));
 123         status = ntvfs_send_oplock_break(p->ntvfs, h, level);
 124         if (!NT_STATUS_IS_OK(status)) return false;
 125         return true;
 126 }
 127 #endif
 128
 129 /*
 130   return a handle to the root of the share
 131 */
 132 static NTSTATUS smb2_get_roothandle(struct smb2_tree *tree, struct smb2_handle *handle)
 133 {
 134         struct smb2_create io;
 135         NTSTATUS status;
 136
 137         ZERO_STRUCT(io);
 138         io.in.oplock_level = 0;
 139         io.in.desired_access = SEC_STD_SYNCHRONIZE | SEC_DIR_READ_ATTRIBUTE | SEC_DIR_LIST;
 140         io.in.file_attributes   = 0;
 141         io.in.create_disposition = NTCREATEX_DISP_OPEN;
 142         io.in.share_access =
 143                 NTCREATEX_SHARE_ACCESS_READ |
 144                 NTCREATEX_SHARE_ACCESS_WRITE|
 145                 NTCREATEX_SHARE_ACCESS_DELETE;
 146         io.in.create_options = 0;
 147         io.in.fname = NULL;
 148
 149         status = smb2_create(tree, tree, &io);
 150         NT_STATUS_NOT_OK_RETURN(status);
 151
 152         *handle = io.out.file.handle;
 153
 154         return NT_STATUS_OK;
 155 }
 156
 157 /*
 158   connect to a share - used when a tree_connect operation comes in.
 159 */
 160 static NTSTATUS cvfs_connect(struct ntvfs_module_context *ntvfs,
 161                              struct ntvfs_request *req,
 162                              union smb_tcon* tcon)
 163 {
 164         NTSTATUS status;
 165         struct cvfs_private *p;
 166         const char *host, *user, *pass, *domain, *remote_share, *sharename;
 167         struct share_config *scfg = ntvfs->ctx->config;
 168         struct smb2_tree *tree;
 169         struct cli_credentials *credentials;
 170         bool machine_account;
 171         struct smbcli_options options;
 172         TALLOC_CTX *tmp_ctx;
 173
 174         tmp_ctx = talloc_new(req);
 175         if (tmp_ctx == NULL) {
 176                 return NT_STATUS_NO_MEMORY;
 177         }
 178
 179         switch (tcon->generic.level) {
 180         case RAW_TCON_TCON:
 181                 sharename = tcon->tcon.in.service;
 182                 break;
 183         case RAW_TCON_TCONX:
 184                 sharename = tcon->tconx.in.path;
 185                 break;
 186         case RAW_TCON_SMB2:
 187                 sharename = tcon->smb2.in.path;
 188                 break;
 189         default:
 190                 status = NT_STATUS_INVALID_LEVEL;
 191                 goto out;
 192         }
 193
 194         if (strncmp(sharename, "\\\\", 2) == 0) {
 195                 char *str = strchr(sharename+2, '\\');
 196                 if (str) {
 197                         sharename = str + 1;
 198                 }
 199         }
 200
 201         /* Here we need to determine which server to connect to.
 202          * For now we use parametric options, type cifs.
 203          */
 204         host = share_string_option(tmp_ctx, scfg, SMB2_SERVER, NULL);
 205         user = share_string_option(tmp_ctx, scfg, SMB2_USER, NULL);
 206         pass = share_string_option(tmp_ctx, scfg, SMB2_PASSWORD, NULL);
 207         domain = share_string_option(tmp_ctx, scfg, SMB2_DOMAIN, NULL);
 208         remote_share = share_string_option(tmp_ctx, scfg, SMB2_SHARE, NULL);
 209         if (!remote_share) {
 210                 remote_share = sharename;
 211         }
 212
 213         machine_account = share_bool_option(scfg, SMB2_USE_MACHINE_ACCT, SMB2_USE_MACHINE_ACCT_DEFAULT);
 214
 215         p = talloc_zero(ntvfs, struct cvfs_private);
 216         if (!p) {
 217                 status = NT_STATUS_NO_MEMORY;
 218                 goto out;
 219         }
 220
 221         ntvfs->private_data = p;
 222
 223         if (!host) {
 224                 DEBUG(1,("CIFS backend: You must supply server\n"));
 225                 status = NT_STATUS_INVALID_PARAMETER;
 226                 goto out;
 227         }
 228
 229         if (user && pass) {
 230                 DEBUG(5, ("CIFS backend: Using specified password\n"));
 231                 credentials = cli_credentials_init(p);
 232                 if (!credentials) {
 233                         status = NT_STATUS_NO_MEMORY;
 234                         goto out;
 235                 }
 236                 cli_credentials_set_conf(credentials, ntvfs->ctx->lp_ctx);
 237                 cli_credentials_set_username(credentials, user, CRED_SPECIFIED);
 238                 if (domain) {
 239                         cli_credentials_set_domain(credentials, domain, CRED_SPECIFIED);
 240                 }
 241                 cli_credentials_set_password(credentials, pass, CRED_SPECIFIED);
 242         } else if (machine_account) {
 243                 DEBUG(5, ("CIFS backend: Using machine account\n"));
 244                 credentials = cli_credentials_init(p);
 245                 cli_credentials_set_conf(credentials, ntvfs->ctx->lp_ctx);
 246                 if (domain) {
 247                         cli_credentials_set_domain(credentials, domain, CRED_SPECIFIED);
 248                 }
 249                 status = cli_credentials_set_machine_account(credentials, ntvfs->ctx->lp_ctx);
 250                 if (!NT_STATUS_IS_OK(status)) {
 251                         goto out;
 252                 }
 253         } else if (req->session_info->credentials) {
 254                 DEBUG(5, ("CIFS backend: Using delegated credentials\n"));
 255                 credentials = req->session_info->credentials;
 256         } else {
 257                 DEBUG(1,("CIFS backend: NO delegated credentials found: You must supply server, user and password or the client must supply delegated credentials\n"));
 258                 status = NT_STATUS_INVALID_PARAMETER;
 259                 goto out;
 260         }
 261
 262         lpcfg_smbcli_options(ntvfs->ctx->lp_ctx, &options);
 263
 264         status = smb2_connect(p, host,
 265                         lpcfg_parm_string_list(p, ntvfs->ctx->lp_ctx, NULL, "smb2", "ports", NULL),
 266                         remote_share,
 267                         lpcfg_resolve_context(ntvfs->ctx->lp_ctx),
 268                         credentials,
 269                         &tree,
 270                         ntvfs->ctx->event_ctx, &options,
 271                         lpcfg_socket_options(ntvfs->ctx->lp_ctx),
 272                         lpcfg_gensec_settings(p, ntvfs->ctx->lp_ctx));
 273         if (!NT_STATUS_IS_OK(status)) {
 274                 goto out;
 275         }
 276
 277         status = smb2_get_roothandle(tree, &p->roothandle);
 278         if (!NT_STATUS_IS_OK(status)) {
 279                 goto out;
 280         }
 281
 282         p->tree = tree;
 283         p->transport = p->tree->session->transport;
 284         p->ntvfs = ntvfs;
 285
 286         ntvfs->ctx->fs_type = talloc_strdup(ntvfs->ctx, "NTFS");
 287         if (ntvfs->ctx->fs_type == NULL) {
 288                 status = NT_STATUS_NO_MEMORY;
 289                 goto out;
 290         }
 291         ntvfs->ctx->dev_type = talloc_strdup(ntvfs->ctx, "A:");
 292         if (ntvfs->ctx->dev_type == NULL) {
 293                 status = NT_STATUS_NO_MEMORY;
 294                 goto out;
 295         }
 296
 297         if (tcon->generic.level == RAW_TCON_TCONX) {
 298                 tcon->tconx.out.fs_type = ntvfs->ctx->fs_type;
 299                 tcon->tconx.out.dev_type = ntvfs->ctx->dev_type;
 300         }
 301
 302         /* we need to receive oplock break requests from the server */
 303         /* TODO: enable oplocks
 304         smbcli_oplock_handler(p->transport, oplock_handler, p);
 305         */
 306
 307         status = NT_STATUS_OK;
 308
 309 out:
 310         TALLOC_FREE(tmp_ctx);
 311         return status;
 312 }
 313
 314 /*
 315   disconnect from a share
 316 */
 317 static NTSTATUS cvfs_disconnect(struct ntvfs_module_context *ntvfs)
 318 {
 319         struct cvfs_private *p = ntvfs->private_data;
 320         struct async_info *a, *an;
 321
 322         /* first cleanup pending requests */
 323         for (a=p->pending; a; a = an) {
 324                 an = a->next;
 325                 talloc_free(a->c_req);
 326                 talloc_free(a);
 327         }
 328
 329         talloc_free(p);
 330         ntvfs->private_data = NULL;
 331
 332         return NT_STATUS_OK;
 333 }
 334
 335 /*
 336   destroy an async info structure
 337 */
 338 static int async_info_destructor(struct async_info *async)
 339 {
 340         DLIST_REMOVE(async->cvfs->pending, async);
 341         return 0;
 342 }
 343
 344 /*
 345   a handler for simple async SMB2 replies
 346   this handler can only be used for functions that don't return any
 347   parameters (those that just return a status code)
 348  */
 349 static void async_simple_smb2(struct smb2_request *c_req)
 350 {
 351         struct async_info *async = c_req->async.private_data;
 352         struct ntvfs_request *req = async->req;
 353
 354         smb2_request_receive(c_req);
 355         req->async_states->status = smb2_request_destroy(c_req);
 356         talloc_free(async);
 357         req->async_states->send_fn(req);
 358 }
 359
 360 /*
 361   a handler for simple async composite replies
 362   this handler can only be used for functions that don't return any
 363   parameters (those that just return a status code)
 364  */
 365 static void async_simple_composite(struct composite_context *c_req)
 366 {
 367         struct async_info *async = c_req->async.private_data;
 368         struct ntvfs_request *req = async->req;
 369
 370         req->async_states->status = composite_wait_free(c_req);
 371         talloc_free(async);
 372         req->async_states->send_fn(req);
 373 }
 374
 375
 376 /* save some typing for the simple functions */
 377 #define ASYNC_RECV_TAIL_F(io, async_fn, file) do { \
 378         if (!c_req) return NT_STATUS_UNSUCCESSFUL; \
 379         { \
 380                 struct async_info *async; \
 381                 async = talloc(req, struct async_info); \
 382                 if (!async) return NT_STATUS_NO_MEMORY; \
 383                 async->parms = io; \
 384                 async->req = req; \
 385                 async->f = file; \
 386                 async->cvfs = p; \
 387                 async->c_req = c_req; \
 388                 DLIST_ADD(p->pending, async); \
 389                 c_req->async.private_data = async; \
 390                 talloc_set_destructor(async, async_info_destructor); \
 391         } \
 392         c_req->async.fn = async_fn; \
 393         req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC; \
 394         return NT_STATUS_OK; \
 395 } while (0)
 396
 397 #define ASYNC_RECV_TAIL(io, async_fn) ASYNC_RECV_TAIL_F(io, async_fn, NULL)
 398
 399 #define SIMPLE_ASYNC_TAIL ASYNC_RECV_TAIL(NULL, async_simple_smb2)
 400 #define SIMPLE_COMPOSITE_TAIL ASYNC_RECV_TAIL(NULL, async_simple_composite)
 401
 402 #define CHECK_ASYNC(req) do { \
 403         if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) { \
 404                 DEBUG(0,("SMB2 proxy backend does not support sync operation at %s\n", \
 405                          __location__)); \
 406                 return NT_STATUS_NOT_IMPLEMENTED; \
 407         }} while (0)
 408
 409 /*
 410   delete a file - the dirtype specifies the file types to include in the search.
 411   The name can contain CIFS wildcards, but rarely does (except with OS/2 clients)
 412
 413   BUGS:
 414      - doesn't handle wildcards
 415      - doesn't obey attrib restrictions
 416 */
 417 static NTSTATUS cvfs_unlink(struct ntvfs_module_context *ntvfs,
 418                             struct ntvfs_request *req, union smb_unlink *unl)
 419 {
 420         struct cvfs_private *p = ntvfs->private_data;
 421         struct composite_context *c_req;
 422
 423         CHECK_ASYNC(req);
 424
 425         c_req = smb2_composite_unlink_send(p->tree, unl);
 426
 427         SIMPLE_COMPOSITE_TAIL;
 428 }
 429
 430 /*
 431   ioctl interface
 432 */
 433 static NTSTATUS cvfs_ioctl(struct ntvfs_module_context *ntvfs,
 434                            struct ntvfs_request *req, union smb_ioctl *io)
 435 {
 436         return NT_STATUS_NOT_IMPLEMENTED;
 437 }
 438
 439 /*
 440   check if a directory exists
 441 */
 442 static NTSTATUS cvfs_chkpath(struct ntvfs_module_context *ntvfs,
 443                              struct ntvfs_request *req, union smb_chkpath *cp)
 444 {
 445         struct cvfs_private *p = ntvfs->private_data;
 446         struct smb2_request *c_req;
 447         struct smb2_find f;
 448
 449         CHECK_ASYNC(req);
 450
 451         /* SMB2 doesn't have a chkpath operation, and also doesn't
 452          have a query path info call, so the best seems to be to do a
 453          find call, using the roothandle we established at connect
 454          time */
 455         ZERO_STRUCT(f);
 456         f.in.file.handle        = p->roothandle;
 457         f.in.level              = SMB2_FIND_DIRECTORY_INFO;
 458         f.in.pattern            = cp->chkpath.in.path;
 459         /* SMB2 find doesn't accept \ or the empty string - this is the best
 460            approximation */
 461         if (strcmp(f.in.pattern, "\\") == 0 ||
 462             strcmp(f.in.pattern, "") == 0) {
 463                 f.in.pattern            = "?";
 464         }
 465         f.in.continue_flags     = SMB2_CONTINUE_FLAG_SINGLE | SMB2_CONTINUE_FLAG_RESTART;
 466         f.in.max_response_size  = 0x1000;
 467
 468         c_req = smb2_find_send(p->tree, &f);
 469
 470         SIMPLE_ASYNC_TAIL;
 471 }
 472
 473 /*
 474   return info on a pathname
 475 */
 476 static NTSTATUS cvfs_qpathinfo(struct ntvfs_module_context *ntvfs,
 477                                struct ntvfs_request *req, union smb_fileinfo *info)
 478 {
 479         return NT_STATUS_NOT_IMPLEMENTED;
 480 }
 481
 482 /*
 483   query info on a open file
 484 */
 485 static NTSTATUS cvfs_qfileinfo(struct ntvfs_module_context *ntvfs,
 486                                struct ntvfs_request *req, union smb_fileinfo *io)
 487 {
 488         return NT_STATUS_NOT_IMPLEMENTED;
 489 }
 490
 491
 492 /*
 493   set info on a pathname
 494 */
 495 static NTSTATUS cvfs_setpathinfo(struct ntvfs_module_context *ntvfs,
 496                                  struct ntvfs_request *req, union smb_setfileinfo *st)
 497 {
 498         return NT_STATUS_NOT_IMPLEMENTED;
 499 }
 500
 501
 502 /*
 503   open a file
 504 */
 505 static NTSTATUS cvfs_open(struct ntvfs_module_context *ntvfs,
 506                           struct ntvfs_request *req, union smb_open *io)
 507 {
 508         return NT_STATUS_NOT_IMPLEMENTED;
 509 }
 510
 511 /*
 512   create a directory
 513 */
 514 static NTSTATUS cvfs_mkdir(struct ntvfs_module_context *ntvfs,
 515                            struct ntvfs_request *req, union smb_mkdir *md)
 516 {
 517         struct cvfs_private *p = ntvfs->private_data;
 518         struct composite_context *c_req;
 519
 520         CHECK_ASYNC(req);
 521
 522         c_req = smb2_composite_mkdir_send(p->tree, md);
 523
 524         SIMPLE_COMPOSITE_TAIL;
 525 }
 526
 527 /*
 528   remove a directory
 529 */
 530 static NTSTATUS cvfs_rmdir(struct ntvfs_module_context *ntvfs,
 531                            struct ntvfs_request *req, struct smb_rmdir *rd)
 532 {
 533         struct cvfs_private *p = ntvfs->private_data;
 534         struct composite_context *c_req;
 535
 536         CHECK_ASYNC(req);
 537
 538         c_req = smb2_composite_rmdir_send(p->tree, rd);
 539
 540         SIMPLE_COMPOSITE_TAIL;
 541 }
 542
 543 /*
 544   rename a set of files
 545 */
 546 static NTSTATUS cvfs_rename(struct ntvfs_module_context *ntvfs,
 547                             struct ntvfs_request *req, union smb_rename *ren)
 548 {
 549         return NT_STATUS_NOT_IMPLEMENTED;
 550 }
 551
 552 /*
 553   copy a set of files
 554 */
 555 static NTSTATUS cvfs_copy(struct ntvfs_module_context *ntvfs,
 556                           struct ntvfs_request *req, struct smb_copy *cp)
 557 {
 558         return NT_STATUS_NOT_SUPPORTED;
 559 }
 560
 561 /*
 562   read from a file
 563 */
 564 static NTSTATUS cvfs_read(struct ntvfs_module_context *ntvfs,
 565                           struct ntvfs_request *req, union smb_read *io)
 566 {
 567         return NT_STATUS_NOT_IMPLEMENTED;
 568 }
 569
 570 /*
 571   write to a file
 572 */
 573 static NTSTATUS cvfs_write(struct ntvfs_module_context *ntvfs,
 574                            struct ntvfs_request *req, union smb_write *io)
 575 {
 576         return NT_STATUS_NOT_IMPLEMENTED;
 577 }
 578
 579 /*
 580   seek in a file
 581 */
 582 static NTSTATUS cvfs_seek(struct ntvfs_module_context *ntvfs,
 583                           struct ntvfs_request *req,
 584                           union smb_seek *io)
 585 {
 586         return NT_STATUS_NOT_IMPLEMENTED;
 587 }
 588
 589 /*
 590   flush a file
 591 */
 592 static NTSTATUS cvfs_flush(struct ntvfs_module_context *ntvfs,
 593                            struct ntvfs_request *req,
 594                            union smb_flush *io)
 595 {
 596         return NT_STATUS_NOT_IMPLEMENTED;
 597 }
 598
 599 /*
 600   close a file
 601 */
 602 static NTSTATUS cvfs_close(struct ntvfs_module_context *ntvfs,
 603                            struct ntvfs_request *req, union smb_close *io)
 604 {
 605         return NT_STATUS_NOT_IMPLEMENTED;
 606 }
 607
 608 /*
 609   exit - closing files open by the pid
 610 */
 611 static NTSTATUS cvfs_exit(struct ntvfs_module_context *ntvfs,
 612                           struct ntvfs_request *req)
 613 {
 614         return NT_STATUS_NOT_IMPLEMENTED;
 615 }
 616
 617 /*
 618   logoff - closing files open by the user
 619 */
 620 static NTSTATUS cvfs_logoff(struct ntvfs_module_context *ntvfs,
 621                             struct ntvfs_request *req)
 622 {
 623         /* we can't do this right in the cifs backend .... */
 624         return NT_STATUS_OK;
 625 }
 626
 627 /*
 628   setup for an async call - nothing to do yet
 629 */
 630 static NTSTATUS cvfs_async_setup(struct ntvfs_module_context *ntvfs,
 631                                  struct ntvfs_request *req,
 632                                  void *private_data)
 633 {
 634         return NT_STATUS_OK;
 635 }
 636
 637 /*
 638   cancel an async call
 639 */
 640 static NTSTATUS cvfs_cancel(struct ntvfs_module_context *ntvfs,
 641                             struct ntvfs_request *req)
 642 {
 643         return NT_STATUS_NOT_IMPLEMENTED;
 644 }
 645
 646 /*
 647   lock a byte range
 648 */
 649 static NTSTATUS cvfs_lock(struct ntvfs_module_context *ntvfs,
 650                           struct ntvfs_request *req, union smb_lock *io)
 651 {
 652         return NT_STATUS_NOT_IMPLEMENTED;
 653 }
 654
 655 /*
 656   set info on a open file
 657 */
 658 static NTSTATUS cvfs_setfileinfo(struct ntvfs_module_context *ntvfs,
 659                                  struct ntvfs_request *req,
 660                                  union smb_setfileinfo *io)
 661 {
 662         return NT_STATUS_NOT_IMPLEMENTED;
 663 }
 664
 665
 666 /*
 667   a handler for async fsinfo replies
 668  */
 669 static void async_fsinfo(struct smb2_request *c_req)
 670 {
 671         struct async_info *async = c_req->async.private_data;
 672         struct ntvfs_request *req = async->req;
 673         req->async_states->status = smb2_getinfo_fs_recv(c_req, req, async->parms);
 674         talloc_free(async);
 675         req->async_states->send_fn(req);
 676 }
 677
 678 /*
 679   return filesystem space info
 680 */
 681 static NTSTATUS cvfs_fsinfo(struct ntvfs_module_context *ntvfs,
 682                             struct ntvfs_request *req, union smb_fsinfo *fs)
 683 {
 684         struct cvfs_private *p = ntvfs->private_data;
 685         struct smb2_request *c_req;
 686         enum smb_fsinfo_level level = fs->generic.level;
 687
 688         CHECK_ASYNC(req);
 689
 690         switch (level) {
 691                 /* some levels go straight through */
 692         case RAW_QFS_VOLUME_INFORMATION:
 693         case RAW_QFS_SIZE_INFORMATION:
 694         case RAW_QFS_DEVICE_INFORMATION:
 695         case RAW_QFS_ATTRIBUTE_INFORMATION:
 696         case RAW_QFS_QUOTA_INFORMATION:
 697         case RAW_QFS_FULL_SIZE_INFORMATION:
 698         case RAW_QFS_OBJECTID_INFORMATION:
 699                 break;
 700
 701                 /* some get mapped */
 702         case RAW_QFS_VOLUME_INFO:
 703                 level = RAW_QFS_VOLUME_INFORMATION;
 704                 break;
 705         case RAW_QFS_SIZE_INFO:
 706                 level = RAW_QFS_SIZE_INFORMATION;
 707                 break;
 708         case RAW_QFS_DEVICE_INFO:
 709                 level = RAW_QFS_DEVICE_INFORMATION;
 710                 break;
 711         case RAW_QFS_ATTRIBUTE_INFO:
 712                 level = RAW_QFS_ATTRIBUTE_INFO;
 713                 break;
 714
 715         default:
 716                 /* the rest get refused for now */
 717                 DEBUG(0,("fsinfo level %u not possible on SMB2\n",
 718                          (unsigned)fs->generic.level));
 719                 break;
 720         }
 721
 722         fs->generic.level = level;
 723         fs->generic.handle = p->roothandle;
 724
 725         c_req = smb2_getinfo_fs_send(p->tree, fs);
 726
 727         ASYNC_RECV_TAIL(fs, async_fsinfo);
 728 }
 729
 730 /*
 731   return print queue info
 732 */
 733 static NTSTATUS cvfs_lpq(struct ntvfs_module_context *ntvfs,
 734                          struct ntvfs_request *req, union smb_lpq *lpq)
 735 {
 736         return NT_STATUS_NOT_SUPPORTED;
 737 }
 738
 739 /*
 740    list files in a directory matching a wildcard pattern
 741 */
 742 static NTSTATUS cvfs_search_first(struct ntvfs_module_context *ntvfs,
 743                                   struct ntvfs_request *req, union smb_search_first *io,
 744                                   void *search_private,
 745                                   bool (*callback)(void *, const union smb_search_data *))
 746 {
 747         struct cvfs_private *p = ntvfs->private_data;
 748         struct smb2_find f;
 749         enum smb_search_data_level smb2_level;
 750         unsigned int count, i;
 751         union smb_search_data *data;
 752         NTSTATUS status;
 753
 754         if (io->generic.level != RAW_SEARCH_TRANS2) {
 755                 DEBUG(0,("We only support trans2 search in smb2 backend\n"));
 756                 return NT_STATUS_NOT_SUPPORTED;
 757         }
 758
 759         switch (io->generic.data_level) {
 760         case RAW_SEARCH_DATA_DIRECTORY_INFO:
 761                 smb2_level = SMB2_FIND_DIRECTORY_INFO;
 762                 break;
 763         case RAW_SEARCH_DATA_FULL_DIRECTORY_INFO:
 764                 smb2_level = SMB2_FIND_FULL_DIRECTORY_INFO;
 765                 break;
 766         case RAW_SEARCH_DATA_BOTH_DIRECTORY_INFO:
 767                 smb2_level = SMB2_FIND_BOTH_DIRECTORY_INFO;
 768                 break;
 769         case RAW_SEARCH_DATA_NAME_INFO:
 770                 smb2_level = SMB2_FIND_NAME_INFO;
 771                 break;
 772         case RAW_SEARCH_DATA_ID_FULL_DIRECTORY_INFO:
 773                 smb2_level = SMB2_FIND_ID_FULL_DIRECTORY_INFO;
 774                 break;
 775         case RAW_SEARCH_DATA_ID_BOTH_DIRECTORY_INFO:
 776                 smb2_level = SMB2_FIND_ID_BOTH_DIRECTORY_INFO;
 777                 break;
 778         default:
 779                 DEBUG(0,("Unsupported search level %u for smb2 backend\n",
 780                          (unsigned)io->generic.data_level));
 781                 return NT_STATUS_INVALID_INFO_CLASS;
 782         }
 783
 784         /* we do the search on the roothandle. This only works because
 785            search is synchronous, otherwise we'd have no way to
 786            distinguish multiple searches happening at once
 787         */
 788         ZERO_STRUCT(f);
 789         f.in.file.handle        = p->roothandle;
 790         f.in.level              = smb2_level;
 791         f.in.pattern            = io->t2ffirst.in.pattern;
 792         while (f.in.pattern[0] == '\\') {
 793                 f.in.pattern++;
 794         }
 795         f.in.continue_flags     = 0;
 796         f.in.max_response_size  = 0x10000;
 797
 798         status = smb2_find_level(p->tree, req, &f, &count, &data);
 799         NT_STATUS_NOT_OK_RETURN(status);
 800
 801         for (i=0;i<count;i++) {
 802                 if (!callback(search_private, &data[i])) break;
 803         }
 804
 805         io->t2ffirst.out.handle = 0;
 806         io->t2ffirst.out.count = i;
 807         /* TODO: fix end_of_file */
 808         io->t2ffirst.out.end_of_search = 1;
 809
 810         talloc_free(data);
 811
 812         return NT_STATUS_OK;
 813 }
 814
 815 /* continue a search */
 816 static NTSTATUS cvfs_search_next(struct ntvfs_module_context *ntvfs,
 817                                  struct ntvfs_request *req, union smb_search_next *io,
 818                                  void *search_private,
 819                                  bool (*callback)(void *, const union smb_search_data *))
 820 {
 821         return NT_STATUS_NOT_IMPLEMENTED;
 822 }
 823
 824 /* close a search */
 825 static NTSTATUS cvfs_search_close(struct ntvfs_module_context *ntvfs,
 826                                   struct ntvfs_request *req, union smb_search_close *io)
 827 {
 828         return NT_STATUS_NOT_IMPLEMENTED;
 829 }
 830
 831 /* SMBtrans - not used on file shares */
 832 static NTSTATUS cvfs_trans(struct ntvfs_module_context *ntvfs,
 833                            struct ntvfs_request *req,
 834                            struct smb_trans2 *trans2)
 835 {
 836         return NT_STATUS_ACCESS_DENIED;
 837 }
 838
 839 /* change notify request - always async */
 840 static NTSTATUS cvfs_notify(struct ntvfs_module_context *ntvfs,
 841                             struct ntvfs_request *req,
 842                             union smb_notify *io)
 843 {
 844         return NT_STATUS_NOT_IMPLEMENTED;
 845 }
 846
 847 /*
 848   initialise the CIFS->CIFS backend, registering ourselves with the ntvfs subsystem
 849  */
 850 NTSTATUS ntvfs_smb2_init(void)
 851 {
 852         NTSTATUS ret;
 853         struct ntvfs_ops ops;
 854         NTVFS_CURRENT_CRITICAL_SIZES(vers);
 855
 856         ZERO_STRUCT(ops);
 857
 858         /* fill in the name and type */
 859         ops.name = "smb2";
 860         ops.type = NTVFS_DISK;
 861
 862         /* fill in all the operations */
 863         ops.connect_fn = cvfs_connect;
 864         ops.disconnect_fn = cvfs_disconnect;
 865         ops.unlink_fn = cvfs_unlink;
 866         ops.chkpath_fn = cvfs_chkpath;
 867         ops.qpathinfo_fn = cvfs_qpathinfo;
 868         ops.setpathinfo_fn = cvfs_setpathinfo;
 869         ops.open_fn = cvfs_open;
 870         ops.mkdir_fn = cvfs_mkdir;
 871         ops.rmdir_fn = cvfs_rmdir;
 872         ops.rename_fn = cvfs_rename;
 873         ops.copy_fn = cvfs_copy;
 874         ops.ioctl_fn = cvfs_ioctl;
 875         ops.read_fn = cvfs_read;
 876         ops.write_fn = cvfs_write;
 877         ops.seek_fn = cvfs_seek;
 878         ops.flush_fn = cvfs_flush;
 879         ops.close_fn = cvfs_close;
 880         ops.exit_fn = cvfs_exit;
 881         ops.lock_fn = cvfs_lock;
 882         ops.setfileinfo_fn = cvfs_setfileinfo;
 883         ops.qfileinfo_fn = cvfs_qfileinfo;
 884         ops.fsinfo_fn = cvfs_fsinfo;
 885         ops.lpq_fn = cvfs_lpq;
 886         ops.search_first_fn = cvfs_search_first;
 887         ops.search_next_fn = cvfs_search_next;
 888         ops.search_close_fn = cvfs_search_close;
 889         ops.trans_fn = cvfs_trans;
 890         ops.logoff_fn = cvfs_logoff;
 891         ops.async_setup_fn = cvfs_async_setup;
 892         ops.cancel_fn = cvfs_cancel;
 893         ops.notify_fn = cvfs_notify;
 894
 895         /* register ourselves with the NTVFS subsystem. We register
 896            under the name 'smb2'. */
 897         ret = ntvfs_register(&ops, &vers);
 898
 899         if (!NT_STATUS_IS_OK(ret)) {
 900                 DEBUG(0,("Failed to register SMB2 backend\n"));
 901         }
 902
 903         return ret;
 904 }