source3/smbd/vfs.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 1.9.
   4    VFS initialisation and support functions
   5    Copyright (C) Tim Potter 1999
   6    Copyright (C) Alexander Bokovoy 2002
   7    Copyright (C) James Peach 2006
   8    Copyright (C) Volker Lendecke 2009
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22
  23    This work was sponsored by Optifacio Software Services, Inc.
  24 */
  25
  26 #include "includes.h"
  27 #include "smbd/globals.h"
  28
  29 #undef DBGC_CLASS
  30 #define DBGC_CLASS DBGC_VFS
  31
  32 static_decl_vfs;
  33
  34 struct vfs_init_function_entry {
  35         char *name;
  36         struct vfs_init_function_entry *prev, *next;
  37         const struct vfs_fn_pointers *fns;
  38 };
  39
  40 /****************************************************************************
  41     maintain the list of available backends
  42 ****************************************************************************/
  43
  44 static struct vfs_init_function_entry *vfs_find_backend_entry(const char *name)
  45 {
  46         struct vfs_init_function_entry *entry = backends;
  47
  48         DEBUG(10, ("vfs_find_backend_entry called for %s\n", name));
  49
  50         while(entry) {
  51                 if (strcmp(entry->name, name)==0) return entry;
  52                 entry = entry->next;
  53         }
  54
  55         return NULL;
  56 }
  57
  58 NTSTATUS smb_register_vfs(int version, const char *name,
  59                           const struct vfs_fn_pointers *fns)
  60 {
  61         struct vfs_init_function_entry *entry = backends;
  62
  63         if ((version != SMB_VFS_INTERFACE_VERSION)) {
  64                 DEBUG(0, ("Failed to register vfs module.\n"
  65                           "The module was compiled against SMB_VFS_INTERFACE_VERSION %d,\n"
  66                           "current SMB_VFS_INTERFACE_VERSION is %d.\n"
  67                           "Please recompile against the current Samba Version!\n",
  68                           version, SMB_VFS_INTERFACE_VERSION));
  69                 return NT_STATUS_OBJECT_TYPE_MISMATCH;
  70         }
  71
  72         if (!name || !name[0]) {
  73                 DEBUG(0,("smb_register_vfs() called with NULL pointer or empty name!\n"));
  74                 return NT_STATUS_INVALID_PARAMETER;
  75         }
  76
  77         if (vfs_find_backend_entry(name)) {
  78                 DEBUG(0,("VFS module %s already loaded!\n", name));
  79                 return NT_STATUS_OBJECT_NAME_COLLISION;
  80         }
  81
  82         entry = SMB_XMALLOC_P(struct vfs_init_function_entry);
  83         entry->name = smb_xstrdup(name);
  84         entry->fns = fns;
  85
  86         DLIST_ADD(backends, entry);
  87         DEBUG(5, ("Successfully added vfs backend '%s'\n", name));
  88         return NT_STATUS_OK;
  89 }
  90
  91 /****************************************************************************
  92   initialise default vfs hooks
  93 ****************************************************************************/
  94
  95 static void vfs_init_default(connection_struct *conn)
  96 {
  97         DEBUG(3, ("Initialising default vfs hooks\n"));
  98         vfs_init_custom(conn, DEFAULT_VFS_MODULE_NAME);
  99 }
 100
 101 /****************************************************************************
 102   initialise custom vfs hooks
 103  ****************************************************************************/
 104
 105 bool vfs_init_custom(connection_struct *conn, const char *vfs_object)
 106 {
 107         char *module_path = NULL;
 108         char *module_name = NULL;
 109         char *module_param = NULL, *p;
 110         vfs_handle_struct *handle;
 111         const struct vfs_init_function_entry *entry;
 112
 113         if (!conn||!vfs_object||!vfs_object[0]) {
 114                 DEBUG(0, ("vfs_init_custom() called with NULL pointer or "
 115                           "empty vfs_object!\n"));
 116                 return False;
 117         }
 118
 119         if(!backends) {
 120                 static_init_vfs;
 121         }
 122
 123         DEBUG(3, ("Initialising custom vfs hooks from [%s]\n", vfs_object));
 124
 125         module_path = smb_xstrdup(vfs_object);
 126
 127         p = strchr_m(module_path, ':');
 128
 129         if (p) {
 130                 *p = 0;
 131                 module_param = p+1;
 132                 trim_char(module_param, ' ', ' ');
 133         }
 134
 135         trim_char(module_path, ' ', ' ');
 136
 137         module_name = smb_xstrdup(module_path);
 138
 139         if ((module_name[0] == '/') &&
 140             (strcmp(module_path, DEFAULT_VFS_MODULE_NAME) != 0)) {
 141
 142                 /*
 143                  * Extract the module name from the path. Just use the base
 144                  * name of the last path component.
 145                  */
 146
 147                 SAFE_FREE(module_name);
 148                 module_name = smb_xstrdup(strrchr_m(module_path, '/')+1);
 149
 150                 p = strchr_m(module_name, '.');
 151
 152                 if (p != NULL) {
 153                         *p = '\0';
 154                 }
 155         }
 156
 157         /* First, try to load the module with the new module system */
 158         entry = vfs_find_backend_entry(module_name);
 159         if (!entry) {
 160                 NTSTATUS status;
 161
 162                 DEBUG(5, ("vfs module [%s] not loaded - trying to load...\n",
 163                           vfs_object));
 164
 165                 status = smb_probe_module("vfs", module_path);
 166                 if (!NT_STATUS_IS_OK(status)) {
 167                         DEBUG(0, ("error probing vfs module '%s': %s\n",
 168                                   module_path, nt_errstr(status)));
 169                         goto fail;
 170                 }
 171
 172                 entry = vfs_find_backend_entry(module_name);
 173                 if (!entry) {
 174                         DEBUG(0,("Can't find a vfs module [%s]\n",vfs_object));
 175                         goto fail;
 176                 }
 177         }
 178
 179         DEBUGADD(5,("Successfully loaded vfs module [%s] with the new modules system\n", vfs_object));
 180
 181         handle = TALLOC_ZERO_P(conn, vfs_handle_struct);
 182         if (!handle) {
 183                 DEBUG(0,("TALLOC_ZERO() failed!\n"));
 184                 goto fail;
 185         }
 186         handle->conn = conn;
 187         handle->fns = entry->fns;
 188         if (module_param) {
 189                 handle->param = talloc_strdup(conn, module_param);
 190         }
 191         DLIST_ADD(conn->vfs_handles, handle);
 192
 193         SAFE_FREE(module_path);
 194         SAFE_FREE(module_name);
 195         return True;
 196
 197  fail:
 198         SAFE_FREE(module_path);
 199         SAFE_FREE(module_name);
 200         return False;
 201 }
 202
 203 /*****************************************************************
 204  Allow VFS modules to extend files_struct with VFS-specific state.
 205  This will be ok for small numbers of extensions, but might need to
 206  be refactored if it becomes more widely used.
 207 ******************************************************************/
 208
 209 #define EXT_DATA_AREA(e) ((uint8 *)(e) + sizeof(struct vfs_fsp_data))
 210
 211 void *vfs_add_fsp_extension_notype(vfs_handle_struct *handle,
 212                                    files_struct *fsp, size_t ext_size,
 213                                    void (*destroy_fn)(void *p_data))
 214 {
 215         struct vfs_fsp_data *ext;
 216         void * ext_data;
 217
 218         /* Prevent VFS modules adding multiple extensions. */
 219         if ((ext_data = vfs_fetch_fsp_extension(handle, fsp))) {
 220                 return ext_data;
 221         }
 222
 223         ext = (struct vfs_fsp_data *)TALLOC_ZERO(
 224                 handle->conn, sizeof(struct vfs_fsp_data) + ext_size);
 225         if (ext == NULL) {
 226                 return NULL;
 227         }
 228
 229         ext->owner = handle;
 230         ext->next = fsp->vfs_extension;
 231         ext->destroy = destroy_fn;
 232         fsp->vfs_extension = ext;
 233         return EXT_DATA_AREA(ext);
 234 }
 235
 236 void vfs_remove_fsp_extension(vfs_handle_struct *handle, files_struct *fsp)
 237 {
 238         struct vfs_fsp_data *curr;
 239         struct vfs_fsp_data *prev;
 240
 241         for (curr = fsp->vfs_extension, prev = NULL;
 242              curr;
 243              prev = curr, curr = curr->next) {
 244                 if (curr->owner == handle) {
 245                     if (prev) {
 246                             prev->next = curr->next;
 247                     } else {
 248                             fsp->vfs_extension = curr->next;
 249                     }
 250                     if (curr->destroy) {
 251                             curr->destroy(EXT_DATA_AREA(curr));
 252                     }
 253                     TALLOC_FREE(curr);
 254                     return;
 255                 }
 256         }
 257 }
 258
 259 void *vfs_memctx_fsp_extension(vfs_handle_struct *handle, files_struct *fsp)
 260 {
 261         struct vfs_fsp_data *head;
 262
 263         for (head = fsp->vfs_extension; head; head = head->next) {
 264                 if (head->owner == handle) {
 265                         return head;
 266                 }
 267         }
 268
 269         return NULL;
 270 }
 271
 272 void *vfs_fetch_fsp_extension(vfs_handle_struct *handle, files_struct *fsp)
 273 {
 274         struct vfs_fsp_data *head;
 275
 276         head = (struct vfs_fsp_data *)vfs_memctx_fsp_extension(handle, fsp);
 277         if (head != NULL) {
 278                 return EXT_DATA_AREA(head);
 279         }
 280
 281         return NULL;
 282 }
 283
 284 #undef EXT_DATA_AREA
 285
 286 /*****************************************************************
 287  Generic VFS init.
 288 ******************************************************************/
 289
 290 bool smbd_vfs_init(connection_struct *conn)
 291 {
 292         const char **vfs_objects;
 293         unsigned int i = 0;
 294         int j = 0;
 295
 296         /* Normal share - initialise with disk access functions */
 297         vfs_init_default(conn);
 298         vfs_objects = lp_vfs_objects(SNUM(conn));
 299
 300         /* Override VFS functions if 'vfs object' was not specified*/
 301         if (!vfs_objects || !vfs_objects[0])
 302                 return True;
 303
 304         for (i=0; vfs_objects[i] ;) {
 305                 i++;
 306         }
 307
 308         for (j=i-1; j >= 0; j--) {
 309                 if (!vfs_init_custom(conn, vfs_objects[j])) {
 310                         DEBUG(0, ("smbd_vfs_init: vfs_init_custom failed for %s\n", vfs_objects[j]));
 311                         return False;
 312                 }
 313         }
 314         return True;
 315 }
 316
 317 /*******************************************************************
 318  Check if a file exists in the vfs.
 319 ********************************************************************/
 320
 321 NTSTATUS vfs_file_exist(connection_struct *conn, struct smb_filename *smb_fname)
 322 {
 323         /* Only return OK if stat was successful and S_ISREG */
 324         if ((SMB_VFS_STAT(conn, smb_fname) != -1) &&
 325             S_ISREG(smb_fname->st.st_ex_mode)) {
 326                 return NT_STATUS_OK;
 327         }
 328
 329         return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 330 }
 331
 332 /****************************************************************************
 333  Read data from fsp on the vfs. (note: EINTR re-read differs from vfs_write_data)
 334 ****************************************************************************/
 335
 336 ssize_t vfs_read_data(files_struct *fsp, char *buf, size_t byte_count)
 337 {
 338         size_t total=0;
 339
 340         while (total < byte_count)
 341         {
 342                 ssize_t ret = SMB_VFS_READ(fsp, buf + total,
 343                                            byte_count - total);
 344
 345                 if (ret == 0) return total;
 346                 if (ret == -1) {
 347                         if (errno == EINTR)
 348                                 continue;
 349                         else
 350                                 return -1;
 351                 }
 352                 total += ret;
 353         }
 354         return (ssize_t)total;
 355 }
 356
 357 ssize_t vfs_pread_data(files_struct *fsp, char *buf,
 358                 size_t byte_count, SMB_OFF_T offset)
 359 {
 360         size_t total=0;
 361
 362         while (total < byte_count)
 363         {
 364                 ssize_t ret = SMB_VFS_PREAD(fsp, buf + total,
 365                                         byte_count - total, offset + total);
 366
 367                 if (ret == 0) return total;
 368                 if (ret == -1) {
 369                         if (errno == EINTR)
 370                                 continue;
 371                         else
 372                                 return -1;
 373                 }
 374                 total += ret;
 375         }
 376         return (ssize_t)total;
 377 }
 378
 379 /****************************************************************************
 380  Write data to a fd on the vfs.
 381 ****************************************************************************/
 382
 383 ssize_t vfs_write_data(struct smb_request *req,
 384                         files_struct *fsp,
 385                         const char *buffer,
 386                         size_t N)
 387 {
 388         size_t total=0;
 389         ssize_t ret;
 390
 391         if (req && req->unread_bytes) {
 392                 SMB_ASSERT(req->unread_bytes == N);
 393                 /* VFS_RECVFILE must drain the socket
 394                  * before returning. */
 395                 req->unread_bytes = 0;
 396                 return SMB_VFS_RECVFILE(smbd_server_fd(),
 397                                         fsp,
 398                                         (SMB_OFF_T)-1,
 399                                         N);
 400         }
 401
 402         while (total < N) {
 403                 ret = SMB_VFS_WRITE(fsp, buffer + total, N - total);
 404
 405                 if (ret == -1)
 406                         return -1;
 407                 if (ret == 0)
 408                         return total;
 409
 410                 total += ret;
 411         }
 412         return (ssize_t)total;
 413 }
 414
 415 ssize_t vfs_pwrite_data(struct smb_request *req,
 416                         files_struct *fsp,
 417                         const char *buffer,
 418                         size_t N,
 419                         SMB_OFF_T offset)
 420 {
 421         size_t total=0;
 422         ssize_t ret;
 423
 424         if (req && req->unread_bytes) {
 425                 SMB_ASSERT(req->unread_bytes == N);
 426                 /* VFS_RECVFILE must drain the socket
 427                  * before returning. */
 428                 req->unread_bytes = 0;
 429                 return SMB_VFS_RECVFILE(smbd_server_fd(),
 430                                         fsp,
 431                                         offset,
 432                                         N);
 433         }
 434
 435         while (total < N) {
 436                 ret = SMB_VFS_PWRITE(fsp, buffer + total, N - total,
 437                                      offset + total);
 438
 439                 if (ret == -1)
 440                         return -1;
 441                 if (ret == 0)
 442                         return total;
 443
 444                 total += ret;
 445         }
 446         return (ssize_t)total;
 447 }
 448 /****************************************************************************
 449  An allocate file space call using the vfs interface.
 450  Allocates space for a file from a filedescriptor.
 451  Returns 0 on success, -1 on failure.
 452 ****************************************************************************/
 453
 454 int vfs_allocate_file_space(files_struct *fsp, uint64_t len)
 455 {
 456         int ret;
 457         SMB_STRUCT_STAT st;
 458         connection_struct *conn = fsp->conn;
 459         uint64_t space_avail;
 460         uint64_t bsize,dfree,dsize;
 461
 462         /*
 463          * Actually try and commit the space on disk....
 464          */
 465
 466         DEBUG(10,("vfs_allocate_file_space: file %s, len %.0f\n",
 467                   fsp_str_dbg(fsp), (double)len));
 468
 469         if (((SMB_OFF_T)len) < 0) {
 470                 DEBUG(0,("vfs_allocate_file_space: %s negative len "
 471                          "requested.\n", fsp_str_dbg(fsp)));
 472                 errno = EINVAL;
 473                 return -1;
 474         }
 475
 476         ret = SMB_VFS_FSTAT(fsp, &st);
 477         if (ret == -1)
 478                 return ret;
 479
 480         if (len == (uint64_t)st.st_ex_size)
 481                 return 0;
 482
 483         if (len < (uint64_t)st.st_ex_size) {
 484                 /* Shrink - use ftruncate. */
 485
 486                 DEBUG(10,("vfs_allocate_file_space: file %s, shrink. Current "
 487                           "size %.0f\n", fsp_str_dbg(fsp),
 488                           (double)st.st_ex_size));
 489
 490                 contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_ALLOC_SHRINK);
 491
 492                 flush_write_cache(fsp, SIZECHANGE_FLUSH);
 493                 if ((ret = SMB_VFS_FTRUNCATE(fsp, (SMB_OFF_T)len)) != -1) {
 494                         set_filelen_write_cache(fsp, len);
 495                 }
 496
 497                 contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_ALLOC_SHRINK);
 498
 499                 return ret;
 500         }
 501
 502         /* Grow - we need to test if we have enough space. */
 503
 504         contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_ALLOC_GROW);
 505         contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_ALLOC_GROW);
 506
 507         if (!lp_strict_allocate(SNUM(fsp->conn)))
 508                 return 0;
 509
 510         len -= st.st_ex_size;
 511         len /= 1024; /* Len is now number of 1k blocks needed. */
 512         space_avail = get_dfree_info(conn, fsp->fsp_name->base_name, false,
 513                                      &bsize, &dfree, &dsize);
 514         if (space_avail == (uint64_t)-1) {
 515                 return -1;
 516         }
 517
 518         DEBUG(10,("vfs_allocate_file_space: file %s, grow. Current size %.0f, "
 519                   "needed blocks = %.0f, space avail = %.0f\n",
 520                   fsp_str_dbg(fsp), (double)st.st_ex_size, (double)len,
 521                   (double)space_avail));
 522
 523         if (len > space_avail) {
 524                 errno = ENOSPC;
 525                 return -1;
 526         }
 527
 528         return 0;
 529 }
 530
 531 /****************************************************************************
 532  A vfs set_filelen call.
 533  set the length of a file from a filedescriptor.
 534  Returns 0 on success, -1 on failure.
 535 ****************************************************************************/
 536
 537 int vfs_set_filelen(files_struct *fsp, SMB_OFF_T len)
 538 {
 539         int ret;
 540
 541         contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_SET_FILE_LEN);
 542
 543         DEBUG(10,("vfs_set_filelen: ftruncate %s to len %.0f\n",
 544                   fsp_str_dbg(fsp), (double)len));
 545         flush_write_cache(fsp, SIZECHANGE_FLUSH);
 546         if ((ret = SMB_VFS_FTRUNCATE(fsp, len)) != -1) {
 547                 set_filelen_write_cache(fsp, len);
 548                 notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
 549                              FILE_NOTIFY_CHANGE_SIZE
 550                              | FILE_NOTIFY_CHANGE_ATTRIBUTES,
 551                              fsp->fsp_name->base_name);
 552         }
 553
 554         contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_SET_FILE_LEN);
 555
 556         return ret;
 557 }
 558
 559 /****************************************************************************
 560  A vfs fill sparse call.
 561  Writes zeros from the end of file to len, if len is greater than EOF.
 562  Used only by strict_sync.
 563  Returns 0 on success, -1 on failure.
 564 ****************************************************************************/
 565
 566 #define SPARSE_BUF_WRITE_SIZE (32*1024)
 567
 568 int vfs_fill_sparse(files_struct *fsp, SMB_OFF_T len)
 569 {
 570         int ret;
 571         SMB_STRUCT_STAT st;
 572         SMB_OFF_T offset;
 573         size_t total;
 574         size_t num_to_write;
 575         ssize_t pwrite_ret;
 576
 577         ret = SMB_VFS_FSTAT(fsp, &st);
 578         if (ret == -1) {
 579                 return ret;
 580         }
 581
 582         if (len <= st.st_ex_size) {
 583                 return 0;
 584         }
 585
 586         DEBUG(10,("vfs_fill_sparse: write zeros in file %s from len %.0f to "
 587                   "len %.0f (%.0f bytes)\n", fsp_str_dbg(fsp),
 588                   (double)st.st_ex_size, (double)len,
 589                   (double)(len - st.st_ex_size)));
 590
 591         contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_FILL_SPARSE);
 592
 593         flush_write_cache(fsp, SIZECHANGE_FLUSH);
 594
 595         if (!sparse_buf) {
 596                 sparse_buf = SMB_CALLOC_ARRAY(char, SPARSE_BUF_WRITE_SIZE);
 597                 if (!sparse_buf) {
 598                         errno = ENOMEM;
 599                         ret = -1;
 600                         goto out;
 601                 }
 602         }
 603
 604         offset = st.st_ex_size;
 605         num_to_write = len - st.st_ex_size;
 606         total = 0;
 607
 608         while (total < num_to_write) {
 609                 size_t curr_write_size = MIN(SPARSE_BUF_WRITE_SIZE, (num_to_write - total));
 610
 611                 pwrite_ret = SMB_VFS_PWRITE(fsp, sparse_buf, curr_write_size, offset + total);
 612                 if (pwrite_ret == -1) {
 613                         DEBUG(10,("vfs_fill_sparse: SMB_VFS_PWRITE for file "
 614                                   "%s failed with error %s\n",
 615                                   fsp_str_dbg(fsp), strerror(errno)));
 616                         ret = -1;
 617                         goto out;
 618                 }
 619                 if (pwrite_ret == 0) {
 620                         ret = 0;
 621                         goto out;
 622                 }
 623
 624                 total += pwrite_ret;
 625         }
 626
 627         set_filelen_write_cache(fsp, len);
 628
 629         ret = 0;
 630  out:
 631         contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_FILL_SPARSE);
 632         return ret;
 633 }
 634
 635 /****************************************************************************
 636  Transfer some data (n bytes) between two file_struct's.
 637 ****************************************************************************/
 638
 639 static ssize_t vfs_read_fn(void *file, void *buf, size_t len)
 640 {
 641         struct files_struct *fsp = (struct files_struct *)file;
 642
 643         return SMB_VFS_READ(fsp, buf, len);
 644 }
 645
 646 static ssize_t vfs_write_fn(void *file, const void *buf, size_t len)
 647 {
 648         struct files_struct *fsp = (struct files_struct *)file;
 649
 650         return SMB_VFS_WRITE(fsp, buf, len);
 651 }
 652
 653 SMB_OFF_T vfs_transfer_file(files_struct *in, files_struct *out, SMB_OFF_T n)
 654 {
 655         return transfer_file_internal((void *)in, (void *)out, n,
 656                                       vfs_read_fn, vfs_write_fn);
 657 }
 658
 659 /*******************************************************************
 660  A vfs_readdir wrapper which just returns the file name.
 661 ********************************************************************/
 662
 663 const char *vfs_readdirname(connection_struct *conn, void *p,
 664                             SMB_STRUCT_STAT *sbuf, char **talloced)
 665 {
 666         SMB_STRUCT_DIRENT *ptr= NULL;
 667         const char *dname;
 668         char *translated;
 669         NTSTATUS status;
 670
 671         if (!p)
 672                 return(NULL);
 673
 674         ptr = SMB_VFS_READDIR(conn, (DIR *)p, sbuf);
 675         if (!ptr)
 676                 return(NULL);
 677
 678         dname = ptr->d_name;
 679
 680
 681 #ifdef NEXT2
 682         if (telldir(p) < 0)
 683                 return(NULL);
 684 #endif
 685
 686 #ifdef HAVE_BROKEN_READDIR_NAME
 687         /* using /usr/ucb/cc is BAD */
 688         dname = dname - 2;
 689 #endif
 690
 691         status = SMB_VFS_TRANSLATE_NAME(conn, dname, vfs_translate_to_windows,
 692                                         talloc_tos(), &translated);
 693         if (NT_STATUS_EQUAL(status, NT_STATUS_NONE_MAPPED)) {
 694                 *talloced = NULL;
 695                 return dname;
 696         }
 697         *talloced = translated;
 698         if (!NT_STATUS_IS_OK(status)) {
 699                 return NULL;
 700         }
 701         return translated;
 702 }
 703
 704 /*******************************************************************
 705  A wrapper for vfs_chdir().
 706 ********************************************************************/
 707
 708 int vfs_ChDir(connection_struct *conn, const char *path)
 709 {
 710         return SMB_VFS_CHDIR(conn,path);
 711 }
 712
 713 /*******************************************************************
 714  Return the absolute current directory path - given a UNIX pathname.
 715  Note that this path is returned in DOS format, not UNIX
 716  format. Note this can be called with conn == NULL.
 717 ********************************************************************/
 718
 719 char *vfs_GetWd(TALLOC_CTX *ctx, connection_struct *conn)
 720 {
 721         char s[PATH_MAX+1];
 722         char *result = NULL;
 723         DATA_BLOB cache_value;
 724         struct file_id key;
 725         struct smb_filename *smb_fname_dot = NULL;
 726         struct smb_filename *smb_fname_full = NULL;
 727         NTSTATUS status;
 728
 729         *s = 0;
 730
 731         if (!lp_getwd_cache()) {
 732                 goto nocache;
 733         }
 734
 735         status = create_synthetic_smb_fname(ctx, ".", NULL, NULL,
 736                                             &smb_fname_dot);
 737         if (!NT_STATUS_IS_OK(status)) {
 738                 errno = map_errno_from_nt_status(status);
 739                 goto out;
 740         }
 741
 742         if (SMB_VFS_STAT(conn, smb_fname_dot) == -1) {
 743                 /*
 744                  * Known to fail for root: the directory may be NFS-mounted
 745                  * and exported with root_squash (so has no root access).
 746                  */
 747                 DEBUG(1,("vfs_GetWd: couldn't stat \".\" error %s "
 748                          "(NFS problem ?)\n", strerror(errno) ));
 749                 goto nocache;
 750         }
 751
 752         key = vfs_file_id_from_sbuf(conn, &smb_fname_dot->st);
 753
 754         if (!memcache_lookup(smbd_memcache(), GETWD_CACHE,
 755                              data_blob_const(&key, sizeof(key)),
 756                              &cache_value)) {
 757                 goto nocache;
 758         }
 759
 760         SMB_ASSERT((cache_value.length > 0)
 761                    && (cache_value.data[cache_value.length-1] == '\0'));
 762
 763         status = create_synthetic_smb_fname(ctx, (char *)cache_value.data,
 764                                             NULL, NULL, &smb_fname_full);
 765         if (!NT_STATUS_IS_OK(status)) {
 766                 errno = map_errno_from_nt_status(status);
 767                 goto out;
 768         }
 769
 770         if ((SMB_VFS_STAT(conn, smb_fname_full) == 0) &&
 771             (smb_fname_dot->st.st_ex_dev == smb_fname_full->st.st_ex_dev) &&
 772             (smb_fname_dot->st.st_ex_ino == smb_fname_full->st.st_ex_ino) &&
 773             (S_ISDIR(smb_fname_dot->st.st_ex_mode))) {
 774                 /*
 775                  * Ok, we're done
 776                  */
 777                 result = talloc_strdup(ctx, smb_fname_full->base_name);
 778                 if (result == NULL) {
 779                         errno = ENOMEM;
 780                 }
 781                 goto out;
 782         }
 783
 784  nocache:
 785
 786         /*
 787          * We don't have the information to hand so rely on traditional
 788          * methods. The very slow getcwd, which spawns a process on some
 789          * systems, or the not quite so bad getwd.
 790          */
 791
 792         if (!SMB_VFS_GETWD(conn,s)) {
 793                 DEBUG(0, ("vfs_GetWd: SMB_VFS_GETWD call failed: %s\n",
 794                           strerror(errno)));
 795                 goto out;
 796         }
 797
 798         if (lp_getwd_cache() && VALID_STAT(smb_fname_dot->st)) {
 799                 key = vfs_file_id_from_sbuf(conn, &smb_fname_dot->st);
 800
 801                 memcache_add(smbd_memcache(), GETWD_CACHE,
 802                              data_blob_const(&key, sizeof(key)),
 803                              data_blob_const(s, strlen(s)+1));
 804         }
 805
 806         result = talloc_strdup(ctx, s);
 807         if (result == NULL) {
 808                 errno = ENOMEM;
 809         }
 810
 811  out:
 812         TALLOC_FREE(smb_fname_dot);
 813         TALLOC_FREE(smb_fname_full);
 814         return result;
 815 }
 816
 817 /*******************************************************************
 818  Reduce a file name, removing .. elements and checking that
 819  it is below dir in the heirachy. This uses realpath.
 820 ********************************************************************/
 821
 822 NTSTATUS check_reduced_name(connection_struct *conn, const char *fname)
 823 {
 824 #ifdef REALPATH_TAKES_NULL
 825         bool free_resolved_name = True;
 826 #else
 827         char resolved_name_buf[PATH_MAX+1];
 828         bool free_resolved_name = False;
 829 #endif
 830         char *resolved_name = NULL;
 831         char *p = NULL;
 832
 833         DEBUG(3,("check_reduced_name [%s] [%s]\n", fname, conn->connectpath));
 834
 835 #ifdef REALPATH_TAKES_NULL
 836         resolved_name = SMB_VFS_REALPATH(conn,fname,NULL);
 837 #else
 838         resolved_name = SMB_VFS_REALPATH(conn,fname,resolved_name_buf);
 839 #endif
 840
 841         if (!resolved_name) {
 842                 switch (errno) {
 843                         case ENOTDIR:
 844                                 DEBUG(3,("check_reduced_name: Component not a "
 845                                          "directory in getting realpath for "
 846                                          "%s\n", fname));
 847                                 return NT_STATUS_OBJECT_PATH_NOT_FOUND;
 848                         case ENOENT:
 849                         {
 850                                 TALLOC_CTX *ctx = talloc_tos();
 851                                 char *tmp_fname = NULL;
 852                                 char *last_component = NULL;
 853                                 /* Last component didn't exist. Remove it and try and canonicalise the directory. */
 854
 855                                 tmp_fname = talloc_strdup(ctx, fname);
 856                                 if (!tmp_fname) {
 857                                         return NT_STATUS_NO_MEMORY;
 858                                 }
 859                                 p = strrchr_m(tmp_fname, '/');
 860                                 if (p) {
 861                                         *p++ = '\0';
 862                                         last_component = p;
 863                                 } else {
 864                                         last_component = tmp_fname;
 865                                         tmp_fname = talloc_strdup(ctx,
 866                                                         ".");
 867                                         if (!tmp_fname) {
 868                                                 return NT_STATUS_NO_MEMORY;
 869                                         }
 870                                 }
 871
 872 #ifdef REALPATH_TAKES_NULL
 873                                 resolved_name = SMB_VFS_REALPATH(conn,tmp_fname,NULL);
 874 #else
 875                                 resolved_name = SMB_VFS_REALPATH(conn,tmp_fname,resolved_name_buf);
 876 #endif
 877                                 if (!resolved_name) {
 878                                         NTSTATUS status = map_nt_error_from_unix(errno);
 879
 880                                         if (errno == ENOENT || errno == ENOTDIR) {
 881                                                 status = NT_STATUS_OBJECT_PATH_NOT_FOUND;
 882                                         }
 883
 884                                         DEBUG(3,("check_reduce_named: "
 885                                                  "couldn't get realpath for "
 886                                                  "%s (%s)\n",
 887                                                 fname,
 888                                                 nt_errstr(status)));
 889                                         return status;
 890                                 }
 891                                 tmp_fname = talloc_asprintf(ctx,
 892                                                 "%s/%s",
 893                                                 resolved_name,
 894                                                 last_component);
 895                                 if (!tmp_fname) {
 896                                         return NT_STATUS_NO_MEMORY;
 897                                 }
 898 #ifdef REALPATH_TAKES_NULL
 899                                 SAFE_FREE(resolved_name);
 900                                 resolved_name = SMB_STRDUP(tmp_fname);
 901                                 if (!resolved_name) {
 902                                         DEBUG(0, ("check_reduced_name: malloc "
 903                                                   "fail for %s\n", tmp_fname));
 904                                         return NT_STATUS_NO_MEMORY;
 905                                 }
 906 #else
 907                                 safe_strcpy(resolved_name_buf, tmp_fname, PATH_MAX);
 908                                 resolved_name = resolved_name_buf;
 909 #endif
 910                                 break;
 911                         }
 912                         default:
 913                                 DEBUG(1,("check_reduced_name: couldn't get "
 914                                          "realpath for %s\n", fname));
 915                                 return map_nt_error_from_unix(errno);
 916                 }
 917         }
 918
 919         DEBUG(10,("check_reduced_name realpath [%s] -> [%s]\n", fname,
 920                   resolved_name));
 921
 922         if (*resolved_name != '/') {
 923                 DEBUG(0,("check_reduced_name: realpath doesn't return "
 924                          "absolute paths !\n"));
 925                 if (free_resolved_name) {
 926                         SAFE_FREE(resolved_name);
 927                 }
 928                 return NT_STATUS_OBJECT_NAME_INVALID;
 929         }
 930
 931         /* Check for widelinks allowed. */
 932         if (!lp_widelinks(SNUM(conn))) {
 933                     const char *conn_rootdir;
 934
 935                     conn_rootdir = SMB_VFS_CONNECTPATH(conn, fname);
 936                     if (conn_rootdir == NULL) {
 937                             DEBUG(2, ("check_reduced_name: Could not get "
 938                                       "conn_rootdir\n"));
 939                             if (free_resolved_name) {
 940                                     SAFE_FREE(resolved_name);
 941                             }
 942                             return NT_STATUS_ACCESS_DENIED;
 943                     }
 944
 945                     if (strncmp(conn_rootdir, resolved_name,
 946                                 strlen(conn_rootdir)) != 0) {
 947                             DEBUG(2, ("check_reduced_name: Bad access "
 948                                       "attempt: %s is a symlink outside the "
 949                                       "share path\n", fname));
 950                             if (free_resolved_name) {
 951                                     SAFE_FREE(resolved_name);
 952                             }
 953                             return NT_STATUS_ACCESS_DENIED;
 954                     }
 955         }
 956
 957         /* Check if we are allowing users to follow symlinks */
 958         /* Patch from David Clerc <David.Clerc@cui.unige.ch>
 959                 University of Geneva */
 960
 961 #ifdef S_ISLNK
 962         if (!lp_symlinks(SNUM(conn))) {
 963                 struct smb_filename *smb_fname = NULL;
 964                 NTSTATUS status;
 965
 966                 status = create_synthetic_smb_fname(talloc_tos(), fname, NULL,
 967                                                     NULL, &smb_fname);
 968                 if (!NT_STATUS_IS_OK(status)) {
 969                         if (free_resolved_name) {
 970                                 SAFE_FREE(resolved_name);
 971                         }
 972                         return status;
 973                 }
 974
 975                 if ( (SMB_VFS_LSTAT(conn, smb_fname) != -1) &&
 976                                 (S_ISLNK(smb_fname->st.st_ex_mode)) ) {
 977                         if (free_resolved_name) {
 978                                 SAFE_FREE(resolved_name);
 979                         }
 980                         DEBUG(3,("check_reduced_name: denied: file path name "
 981                                  "%s is a symlink\n",resolved_name));
 982                         TALLOC_FREE(smb_fname);
 983                         return NT_STATUS_ACCESS_DENIED;
 984                 }
 985                 TALLOC_FREE(smb_fname);
 986         }
 987 #endif
 988
 989         DEBUG(3,("check_reduced_name: %s reduced to %s\n", fname,
 990                  resolved_name));
 991         if (free_resolved_name) {
 992                 SAFE_FREE(resolved_name);
 993         }
 994         return NT_STATUS_OK;
 995 }
 996
 997 /**
 998  * XXX: This is temporary and there should be no callers of this once
 999  * smb_filename is plumbed through all path based operations.
1000  */
1001 int vfs_stat_smb_fname(struct connection_struct *conn, const char *fname,
1002                        SMB_STRUCT_STAT *psbuf)
1003 {
1004         struct smb_filename *smb_fname = NULL;
1005         NTSTATUS status;
1006         int ret;
1007
1008         status = create_synthetic_smb_fname_split(talloc_tos(), fname, NULL,
1009                                                   &smb_fname);
1010         if (!NT_STATUS_IS_OK(status)) {
1011                 errno = map_errno_from_nt_status(status);
1012                 return -1;
1013         }
1014
1015         if (lp_posix_pathnames()) {
1016                 ret = SMB_VFS_LSTAT(conn, smb_fname);
1017         } else {
1018                 ret = SMB_VFS_STAT(conn, smb_fname);
1019         }
1020
1021         if (ret != -1) {
1022                 *psbuf = smb_fname->st;
1023         }
1024
1025         TALLOC_FREE(smb_fname);
1026         return ret;
1027 }
1028
1029 /**
1030  * XXX: This is temporary and there should be no callers of this once
1031  * smb_filename is plumbed through all path based operations.
1032  */
1033 int vfs_lstat_smb_fname(struct connection_struct *conn, const char *fname,
1034                         SMB_STRUCT_STAT *psbuf)
1035 {
1036         struct smb_filename *smb_fname = NULL;
1037         NTSTATUS status;
1038         int ret;
1039
1040         status = create_synthetic_smb_fname_split(talloc_tos(), fname, NULL,
1041                                                   &smb_fname);
1042         if (!NT_STATUS_IS_OK(status)) {
1043                 errno = map_errno_from_nt_status(status);
1044                 return -1;
1045         }
1046
1047         ret = SMB_VFS_LSTAT(conn, smb_fname);
1048         if (ret != -1) {
1049                 *psbuf = smb_fname->st;
1050         }
1051
1052         TALLOC_FREE(smb_fname);
1053         return ret;
1054 }
1055
1056 /**
1057  * Ensure LSTAT is called for POSIX paths.
1058  */
1059
1060 NTSTATUS vfs_stat_fsp(files_struct *fsp)
1061 {
1062         int ret;
1063
1064         if(fsp->is_directory || fsp->fh->fd == -1) {
1065                 if (fsp->posix_open) {
1066                         ret = SMB_VFS_LSTAT(fsp->conn, fsp->fsp_name);
1067                 } else {
1068                         ret = SMB_VFS_STAT(fsp->conn, fsp->fsp_name);
1069                 }
1070                 if (ret == -1) {
1071                         return map_nt_error_from_unix(errno);
1072                 }
1073         } else {
1074                 if(SMB_VFS_FSTAT(fsp, &fsp->fsp_name->st) != 0) {
1075                         return map_nt_error_from_unix(errno);
1076                 }
1077         }
1078         return NT_STATUS_OK;
1079 }
1080
1081 /*
1082   generate a file_id from a stat structure
1083  */
1084 struct file_id vfs_file_id_from_sbuf(connection_struct *conn, const SMB_STRUCT_STAT *sbuf)
1085 {
1086         return SMB_VFS_FILE_ID_CREATE(conn, sbuf);
1087 }
1088
1089 int smb_vfs_call_connect(struct vfs_handle_struct *handle,
1090                          const char *service, const char *user)
1091 {
1092         VFS_FIND(connect_fn);
1093         return handle->fns->connect_fn(handle, service, user);
1094 }
1095
1096 void smb_vfs_call_disconnect(struct vfs_handle_struct *handle)
1097 {
1098         VFS_FIND(disconnect);
1099         handle->fns->disconnect(handle);
1100 }
1101
1102 uint64_t smb_vfs_call_disk_free(struct vfs_handle_struct *handle,
1103                                 const char *path, bool small_query,
1104                                 uint64_t *bsize, uint64_t *dfree,
1105                                 uint64_t *dsize)
1106 {
1107         VFS_FIND(disk_free);
1108         return handle->fns->disk_free(handle, path, small_query, bsize, dfree,
1109                                       dsize);
1110 }
1111
1112 int smb_vfs_call_get_quota(struct vfs_handle_struct *handle,
1113                            enum SMB_QUOTA_TYPE qtype, unid_t id,
1114                            SMB_DISK_QUOTA *qt)
1115 {
1116         VFS_FIND(get_quota);
1117         return handle->fns->get_quota(handle, qtype, id, qt);
1118 }
1119
1120 int smb_vfs_call_set_quota(struct vfs_handle_struct *handle,
1121                            enum SMB_QUOTA_TYPE qtype, unid_t id,
1122                            SMB_DISK_QUOTA *qt)
1123 {
1124         VFS_FIND(set_quota);
1125         return handle->fns->set_quota(handle, qtype, id, qt);
1126 }
1127
1128 int smb_vfs_call_get_shadow_copy_data(struct vfs_handle_struct *handle,
1129                                       struct files_struct *fsp,
1130                                       SHADOW_COPY_DATA *shadow_copy_data,
1131                                       bool labels)
1132 {
1133         VFS_FIND(get_shadow_copy_data);
1134         return handle->fns->get_shadow_copy_data(handle, fsp, shadow_copy_data,
1135                                                  labels);
1136 }
1137 int smb_vfs_call_statvfs(struct vfs_handle_struct *handle, const char *path,
1138                          struct vfs_statvfs_struct *statbuf)
1139 {
1140         VFS_FIND(statvfs);
1141         return handle->fns->statvfs(handle, path, statbuf);
1142 }
1143
1144 uint32_t smb_vfs_call_fs_capabilities(struct vfs_handle_struct *handle,
1145                         enum timestamp_set_resolution *p_ts_res)
1146 {
1147         VFS_FIND(fs_capabilities);
1148         return handle->fns->fs_capabilities(handle, p_ts_res);
1149 }
1150
1151 SMB_STRUCT_DIR *smb_vfs_call_opendir(struct vfs_handle_struct *handle,
1152                                      const char *fname, const char *mask,
1153                                      uint32 attributes)
1154 {
1155         VFS_FIND(opendir);
1156         return handle->fns->opendir(handle, fname, mask, attributes);
1157 }
1158
1159 SMB_STRUCT_DIRENT *smb_vfs_call_readdir(struct vfs_handle_struct *handle,
1160                                               SMB_STRUCT_DIR *dirp,
1161                                               SMB_STRUCT_STAT *sbuf)
1162 {
1163         VFS_FIND(readdir);
1164         return handle->fns->readdir(handle, dirp, sbuf);
1165 }
1166
1167 void smb_vfs_call_seekdir(struct vfs_handle_struct *handle,
1168                           SMB_STRUCT_DIR *dirp, long offset)
1169 {
1170         VFS_FIND(seekdir);
1171         handle->fns->seekdir(handle, dirp, offset);
1172 }
1173
1174 long smb_vfs_call_telldir(struct vfs_handle_struct *handle,
1175                           SMB_STRUCT_DIR *dirp)
1176 {
1177         VFS_FIND(telldir);
1178         return handle->fns->telldir(handle, dirp);
1179 }
1180
1181 void smb_vfs_call_rewind_dir(struct vfs_handle_struct *handle,
1182                              SMB_STRUCT_DIR *dirp)
1183 {
1184         VFS_FIND(rewind_dir);
1185         handle->fns->rewind_dir(handle, dirp);
1186 }
1187
1188 int smb_vfs_call_mkdir(struct vfs_handle_struct *handle, const char *path,
1189                        mode_t mode)
1190 {
1191         VFS_FIND(mkdir);
1192         return handle->fns->mkdir(handle, path, mode);
1193 }
1194
1195 int smb_vfs_call_rmdir(struct vfs_handle_struct *handle, const char *path)
1196 {
1197         VFS_FIND(rmdir);
1198         return handle->fns->rmdir(handle, path);
1199 }
1200
1201 int smb_vfs_call_closedir(struct vfs_handle_struct *handle,
1202                           SMB_STRUCT_DIR *dir)
1203 {
1204         VFS_FIND(closedir);
1205         return handle->fns->closedir(handle, dir);
1206 }
1207
1208 void smb_vfs_call_init_search_op(struct vfs_handle_struct *handle,
1209                                  SMB_STRUCT_DIR *dirp)
1210 {
1211         VFS_FIND(init_search_op);
1212         handle->fns->init_search_op(handle, dirp);
1213 }
1214
1215 int smb_vfs_call_open(struct vfs_handle_struct *handle,
1216                       struct smb_filename *smb_fname, struct files_struct *fsp,
1217                       int flags, mode_t mode)
1218 {
1219         VFS_FIND(open);
1220         return handle->fns->open(handle, smb_fname, fsp, flags, mode);
1221 }
1222
1223 NTSTATUS smb_vfs_call_create_file(struct vfs_handle_struct *handle,
1224                                   struct smb_request *req,
1225                                   uint16_t root_dir_fid,
1226                                   struct smb_filename *smb_fname,
1227                                   uint32_t access_mask,
1228                                   uint32_t share_access,
1229                                   uint32_t create_disposition,
1230                                   uint32_t create_options,
1231                                   uint32_t file_attributes,
1232                                   uint32_t oplock_request,
1233                                   uint64_t allocation_size,
1234                                   uint32_t private_flags,
1235                                   struct security_descriptor *sd,
1236                                   struct ea_list *ea_list,
1237                                   files_struct **result,
1238                                   int *pinfo)
1239 {
1240         VFS_FIND(create_file);
1241         return handle->fns->create_file(
1242                 handle, req, root_dir_fid, smb_fname, access_mask,
1243                 share_access, create_disposition, create_options,
1244                 file_attributes, oplock_request, allocation_size,
1245                 private_flags, sd, ea_list,
1246                 result, pinfo);
1247 }
1248
1249 int smb_vfs_call_close_fn(struct vfs_handle_struct *handle,
1250                           struct files_struct *fsp)
1251 {
1252         VFS_FIND(close_fn);
1253         return handle->fns->close_fn(handle, fsp);
1254 }
1255
1256 ssize_t smb_vfs_call_vfs_read(struct vfs_handle_struct *handle,
1257                               struct files_struct *fsp, void *data, size_t n)
1258 {
1259         VFS_FIND(vfs_read);
1260         return handle->fns->vfs_read(handle, fsp, data, n);
1261 }
1262
1263 ssize_t smb_vfs_call_pread(struct vfs_handle_struct *handle,
1264                            struct files_struct *fsp, void *data, size_t n,
1265                            SMB_OFF_T offset)
1266 {
1267         VFS_FIND(pread);
1268         return handle->fns->pread(handle, fsp, data, n, offset);
1269 }
1270
1271 ssize_t smb_vfs_call_write(struct vfs_handle_struct *handle,
1272                            struct files_struct *fsp, const void *data,
1273                            size_t n)
1274 {
1275         VFS_FIND(write);
1276         return handle->fns->write(handle, fsp, data, n);
1277 }
1278
1279 ssize_t smb_vfs_call_pwrite(struct vfs_handle_struct *handle,
1280                             struct files_struct *fsp, const void *data,
1281                             size_t n, SMB_OFF_T offset)
1282 {
1283         VFS_FIND(pwrite);
1284         return handle->fns->pwrite(handle, fsp, data, n, offset);
1285 }
1286
1287 SMB_OFF_T smb_vfs_call_lseek(struct vfs_handle_struct *handle,
1288                              struct files_struct *fsp, SMB_OFF_T offset,
1289                              int whence)
1290 {
1291         VFS_FIND(lseek);
1292         return handle->fns->lseek(handle, fsp, offset, whence);
1293 }
1294
1295 ssize_t smb_vfs_call_sendfile(struct vfs_handle_struct *handle, int tofd,
1296                               files_struct *fromfsp, const DATA_BLOB *header,
1297                               SMB_OFF_T offset, size_t count)
1298 {
1299         VFS_FIND(sendfile);
1300         return handle->fns->sendfile(handle, tofd, fromfsp, header, offset,
1301                                      count);
1302 }
1303
1304 ssize_t smb_vfs_call_recvfile(struct vfs_handle_struct *handle, int fromfd,
1305                               files_struct *tofsp, SMB_OFF_T offset,
1306                               size_t count)
1307 {
1308         VFS_FIND(recvfile);
1309         return handle->fns->recvfile(handle, fromfd, tofsp, offset, count);
1310 }
1311
1312 int smb_vfs_call_rename(struct vfs_handle_struct *handle,
1313                         const struct smb_filename *smb_fname_src,
1314                         const struct smb_filename *smb_fname_dst)
1315 {
1316         VFS_FIND(rename);
1317         return handle->fns->rename(handle, smb_fname_src, smb_fname_dst);
1318 }
1319
1320 int smb_vfs_call_fsync(struct vfs_handle_struct *handle,
1321                        struct files_struct *fsp)
1322 {
1323         VFS_FIND(fsync);
1324         return handle->fns->fsync(handle, fsp);
1325 }
1326
1327 int smb_vfs_call_stat(struct vfs_handle_struct *handle,
1328                       struct smb_filename *smb_fname)
1329 {
1330         VFS_FIND(stat);
1331         return handle->fns->stat(handle, smb_fname);
1332 }
1333
1334 int smb_vfs_call_fstat(struct vfs_handle_struct *handle,
1335                        struct files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1336 {
1337         VFS_FIND(fstat);
1338         return handle->fns->fstat(handle, fsp, sbuf);
1339 }
1340
1341 int smb_vfs_call_lstat(struct vfs_handle_struct *handle,
1342                        struct smb_filename *smb_filename)
1343 {
1344         VFS_FIND(lstat);
1345         return handle->fns->lstat(handle, smb_filename);
1346 }
1347
1348 uint64_t smb_vfs_call_get_alloc_size(struct vfs_handle_struct *handle,
1349                                      struct files_struct *fsp,
1350                                      const SMB_STRUCT_STAT *sbuf)
1351 {
1352         VFS_FIND(get_alloc_size);
1353         return handle->fns->get_alloc_size(handle, fsp, sbuf);
1354 }
1355
1356 int smb_vfs_call_unlink(struct vfs_handle_struct *handle,
1357                         const struct smb_filename *smb_fname)
1358 {
1359         VFS_FIND(unlink);
1360         return handle->fns->unlink(handle, smb_fname);
1361 }
1362
1363 int smb_vfs_call_chmod(struct vfs_handle_struct *handle, const char *path,
1364                        mode_t mode)
1365 {
1366         VFS_FIND(chmod);
1367         return handle->fns->chmod(handle, path, mode);
1368 }
1369
1370 int smb_vfs_call_fchmod(struct vfs_handle_struct *handle,
1371                         struct files_struct *fsp, mode_t mode)
1372 {
1373         VFS_FIND(fchmod);
1374         return handle->fns->fchmod(handle, fsp, mode);
1375 }
1376
1377 int smb_vfs_call_chown(struct vfs_handle_struct *handle, const char *path,
1378                        uid_t uid, gid_t gid)
1379 {
1380         VFS_FIND(chown);
1381         return handle->fns->chown(handle, path, uid, gid);
1382 }
1383
1384 int smb_vfs_call_fchown(struct vfs_handle_struct *handle,
1385                         struct files_struct *fsp, uid_t uid, gid_t gid)
1386 {
1387         VFS_FIND(fchown);
1388         return handle->fns->fchown(handle, fsp, uid, gid);
1389 }
1390
1391 int smb_vfs_call_lchown(struct vfs_handle_struct *handle, const char *path,
1392                         uid_t uid, gid_t gid)
1393 {
1394         VFS_FIND(lchown);
1395         return handle->fns->lchown(handle, path, uid, gid);
1396 }
1397
1398 int smb_vfs_call_chdir(struct vfs_handle_struct *handle, const char *path)
1399 {
1400         VFS_FIND(chdir);
1401         return handle->fns->chdir(handle, path);
1402 }
1403
1404 char *smb_vfs_call_getwd(struct vfs_handle_struct *handle, char *buf)
1405 {
1406         VFS_FIND(getwd);
1407         return handle->fns->getwd(handle, buf);
1408 }
1409
1410 int smb_vfs_call_ntimes(struct vfs_handle_struct *handle,
1411                         const struct smb_filename *smb_fname,
1412                         struct smb_file_time *ft)
1413 {
1414         VFS_FIND(ntimes);
1415         return handle->fns->ntimes(handle, smb_fname, ft);
1416 }
1417
1418 int smb_vfs_call_ftruncate(struct vfs_handle_struct *handle,
1419                            struct files_struct *fsp, SMB_OFF_T offset)
1420 {
1421         VFS_FIND(ftruncate);
1422         return handle->fns->ftruncate(handle, fsp, offset);
1423 }
1424
1425 int smb_vfs_call_kernel_flock(struct vfs_handle_struct *handle,
1426                               struct files_struct *fsp, uint32 share_mode,
1427                               uint32_t access_mask)
1428 {
1429         VFS_FIND(kernel_flock);
1430         return handle->fns->kernel_flock(handle, fsp, share_mode,
1431                                          access_mask);
1432 }
1433
1434 int smb_vfs_call_linux_setlease(struct vfs_handle_struct *handle,
1435                                 struct files_struct *fsp, int leasetype)
1436 {
1437         VFS_FIND(linux_setlease);
1438         return handle->fns->linux_setlease(handle, fsp, leasetype);
1439 }
1440
1441 int smb_vfs_call_symlink(struct vfs_handle_struct *handle, const char *oldpath,
1442                          const char *newpath)
1443 {
1444         VFS_FIND(symlink);
1445         return handle->fns->symlink(handle, oldpath, newpath);
1446 }
1447
1448 int smb_vfs_call_vfs_readlink(struct vfs_handle_struct *handle,
1449                               const char *path, char *buf, size_t bufsiz)
1450 {
1451         VFS_FIND(vfs_readlink);
1452         return handle->fns->vfs_readlink(handle, path, buf, bufsiz);
1453 }
1454
1455 int smb_vfs_call_link(struct vfs_handle_struct *handle, const char *oldpath,
1456                       const char *newpath)
1457 {
1458         VFS_FIND(link);
1459         return handle->fns->link(handle, oldpath, newpath);
1460 }
1461
1462 int smb_vfs_call_mknod(struct vfs_handle_struct *handle, const char *path,
1463                        mode_t mode, SMB_DEV_T dev)
1464 {
1465         VFS_FIND(mknod);
1466         return handle->fns->mknod(handle, path, mode, dev);
1467 }
1468
1469 char *smb_vfs_call_realpath(struct vfs_handle_struct *handle,
1470                             const char *path, char *resolved_path)
1471 {
1472         VFS_FIND(realpath);
1473         return handle->fns->realpath(handle, path, resolved_path);
1474 }
1475
1476 NTSTATUS smb_vfs_call_notify_watch(struct vfs_handle_struct *handle,
1477                                    struct sys_notify_context *ctx,
1478                                    struct notify_entry *e,
1479                                    void (*callback)(struct sys_notify_context *ctx,
1480                                                     void *private_data,
1481                                                     struct notify_event *ev),
1482                                    void *private_data, void *handle_p)
1483 {
1484         VFS_FIND(notify_watch);
1485         return handle->fns->notify_watch(handle, ctx, e, callback,
1486                                          private_data, handle_p);
1487 }
1488
1489 int smb_vfs_call_chflags(struct vfs_handle_struct *handle, const char *path,
1490                          unsigned int flags)
1491 {
1492         VFS_FIND(chflags);
1493         return handle->fns->chflags(handle, path, flags);
1494 }
1495
1496 struct file_id smb_vfs_call_file_id_create(struct vfs_handle_struct *handle,
1497                                            const SMB_STRUCT_STAT *sbuf)
1498 {
1499         VFS_FIND(file_id_create);
1500         return handle->fns->file_id_create(handle, sbuf);
1501 }
1502
1503 NTSTATUS smb_vfs_call_streaminfo(struct vfs_handle_struct *handle,
1504                                  struct files_struct *fsp,
1505                                  const char *fname,
1506                                  TALLOC_CTX *mem_ctx,
1507                                  unsigned int *num_streams,
1508                                  struct stream_struct **streams)
1509 {
1510         VFS_FIND(streaminfo);
1511         return handle->fns->streaminfo(handle, fsp, fname, mem_ctx,
1512                                        num_streams, streams);
1513 }
1514
1515 int smb_vfs_call_get_real_filename(struct vfs_handle_struct *handle,
1516                                    const char *path, const char *name,
1517                                    TALLOC_CTX *mem_ctx, char **found_name)
1518 {
1519         VFS_FIND(get_real_filename);
1520         return handle->fns->get_real_filename(handle, path, name, mem_ctx,
1521                                               found_name);
1522 }
1523
1524 const char *smb_vfs_call_connectpath(struct vfs_handle_struct *handle,
1525                                      const char *filename)
1526 {
1527         VFS_FIND(connectpath);
1528         return handle->fns->connectpath(handle, filename);
1529 }
1530
1531 bool smb_vfs_call_strict_lock(struct vfs_handle_struct *handle,
1532                               struct files_struct *fsp,
1533                               struct lock_struct *plock)
1534 {
1535         VFS_FIND(strict_lock);
1536         return handle->fns->strict_lock(handle, fsp, plock);
1537 }
1538
1539 void smb_vfs_call_strict_unlock(struct vfs_handle_struct *handle,
1540                                 struct files_struct *fsp,
1541                                 struct lock_struct *plock)
1542 {
1543         VFS_FIND(strict_unlock);
1544         handle->fns->strict_unlock(handle, fsp, plock);
1545 }
1546
1547 NTSTATUS smb_vfs_call_translate_name(struct vfs_handle_struct *handle,
1548                                      const char *name,
1549                                      enum vfs_translate_direction direction,
1550                                      TALLOC_CTX *mem_ctx,
1551                                      char **mapped_name)
1552 {
1553         VFS_FIND(translate_name);
1554         return handle->fns->translate_name(handle, name, direction, mem_ctx,
1555                                            mapped_name);
1556 }
1557
1558 NTSTATUS smb_vfs_call_fget_nt_acl(struct vfs_handle_struct *handle,
1559                                   struct files_struct *fsp,
1560                                   uint32 security_info,
1561                                   struct security_descriptor **ppdesc)
1562 {
1563         VFS_FIND(fget_nt_acl);
1564         return handle->fns->fget_nt_acl(handle, fsp, security_info,
1565                                         ppdesc);
1566 }
1567
1568 NTSTATUS smb_vfs_call_get_nt_acl(struct vfs_handle_struct *handle,
1569                                  const char *name,
1570                                  uint32 security_info,
1571                                  struct security_descriptor **ppdesc)
1572 {
1573         VFS_FIND(get_nt_acl);
1574         return handle->fns->get_nt_acl(handle, name, security_info, ppdesc);
1575 }
1576
1577 NTSTATUS smb_vfs_call_fset_nt_acl(struct vfs_handle_struct *handle,
1578                                   struct files_struct *fsp,
1579                                   uint32 security_info_sent,
1580                                   const struct security_descriptor *psd)
1581 {
1582         VFS_FIND(fset_nt_acl);
1583         return handle->fns->fset_nt_acl(handle, fsp, security_info_sent, psd);
1584 }
1585
1586 int smb_vfs_call_chmod_acl(struct vfs_handle_struct *handle, const char *name,
1587                            mode_t mode)
1588 {
1589         VFS_FIND(chmod_acl);
1590         return handle->fns->chmod_acl(handle, name, mode);
1591 }
1592
1593 int smb_vfs_call_fchmod_acl(struct vfs_handle_struct *handle,
1594                             struct files_struct *fsp, mode_t mode)
1595 {
1596         VFS_FIND(fchmod_acl);
1597         return handle->fns->fchmod_acl(handle, fsp, mode);
1598 }
1599
1600 int smb_vfs_call_sys_acl_get_entry(struct vfs_handle_struct *handle,
1601                                    SMB_ACL_T theacl, int entry_id,
1602                                    SMB_ACL_ENTRY_T *entry_p)
1603 {
1604         VFS_FIND(sys_acl_get_entry);
1605         return handle->fns->sys_acl_get_entry(handle, theacl, entry_id,
1606                                               entry_p);
1607 }
1608
1609 int smb_vfs_call_sys_acl_get_tag_type(struct vfs_handle_struct *handle,
1610                                       SMB_ACL_ENTRY_T entry_d,
1611                                       SMB_ACL_TAG_T *tag_type_p)
1612 {
1613         VFS_FIND(sys_acl_get_tag_type);
1614         return handle->fns->sys_acl_get_tag_type(handle, entry_d, tag_type_p);
1615 }
1616
1617 int smb_vfs_call_sys_acl_get_permset(struct vfs_handle_struct *handle,
1618                                      SMB_ACL_ENTRY_T entry_d,
1619                                      SMB_ACL_PERMSET_T *permset_p)
1620 {
1621         VFS_FIND(sys_acl_get_permset);
1622         return handle->fns->sys_acl_get_permset(handle, entry_d, permset_p);
1623 }
1624
1625 void * smb_vfs_call_sys_acl_get_qualifier(struct vfs_handle_struct *handle,
1626                                           SMB_ACL_ENTRY_T entry_d)
1627 {
1628         VFS_FIND(sys_acl_get_qualifier);
1629         return handle->fns->sys_acl_get_qualifier(handle, entry_d);
1630 }
1631
1632 SMB_ACL_T smb_vfs_call_sys_acl_get_file(struct vfs_handle_struct *handle,
1633                                         const char *path_p,
1634                                         SMB_ACL_TYPE_T type)
1635 {
1636         VFS_FIND(sys_acl_get_file);
1637         return handle->fns->sys_acl_get_file(handle, path_p, type);
1638 }
1639
1640 SMB_ACL_T smb_vfs_call_sys_acl_get_fd(struct vfs_handle_struct *handle,
1641                                       struct files_struct *fsp)
1642 {
1643         VFS_FIND(sys_acl_get_fd);
1644         return handle->fns->sys_acl_get_fd(handle, fsp);
1645 }
1646
1647 int smb_vfs_call_sys_acl_clear_perms(struct vfs_handle_struct *handle,
1648                                      SMB_ACL_PERMSET_T permset)
1649 {
1650         VFS_FIND(sys_acl_clear_perms);
1651         return handle->fns->sys_acl_clear_perms(handle, permset);
1652 }
1653
1654 int smb_vfs_call_sys_acl_add_perm(struct vfs_handle_struct *handle,
1655                                   SMB_ACL_PERMSET_T permset,
1656                                   SMB_ACL_PERM_T perm)
1657 {
1658         VFS_FIND(sys_acl_add_perm);
1659         return handle->fns->sys_acl_add_perm(handle, permset, perm);
1660 }
1661
1662 char * smb_vfs_call_sys_acl_to_text(struct vfs_handle_struct *handle,
1663                                     SMB_ACL_T theacl, ssize_t *plen)
1664 {
1665         VFS_FIND(sys_acl_to_text);
1666         return handle->fns->sys_acl_to_text(handle, theacl, plen);
1667 }
1668
1669 SMB_ACL_T smb_vfs_call_sys_acl_init(struct vfs_handle_struct *handle,
1670                                     int count)
1671 {
1672         VFS_FIND(sys_acl_init);
1673         return handle->fns->sys_acl_init(handle, count);
1674 }
1675
1676 int smb_vfs_call_sys_acl_create_entry(struct vfs_handle_struct *handle,
1677                                       SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry)
1678 {
1679         VFS_FIND(sys_acl_create_entry);
1680         return handle->fns->sys_acl_create_entry(handle, pacl, pentry);
1681 }
1682
1683 int smb_vfs_call_sys_acl_set_tag_type(struct vfs_handle_struct *handle,
1684                                       SMB_ACL_ENTRY_T entry,
1685                                       SMB_ACL_TAG_T tagtype)
1686 {
1687         VFS_FIND(sys_acl_set_tag_type);
1688         return handle->fns->sys_acl_set_tag_type(handle, entry, tagtype);
1689 }
1690
1691 int smb_vfs_call_sys_acl_set_qualifier(struct vfs_handle_struct *handle,
1692                                        SMB_ACL_ENTRY_T entry, void *qual)
1693 {
1694         VFS_FIND(sys_acl_set_qualifier);
1695         return handle->fns->sys_acl_set_qualifier(handle, entry, qual);
1696 }
1697
1698 int smb_vfs_call_sys_acl_set_permset(struct vfs_handle_struct *handle,
1699                                      SMB_ACL_ENTRY_T entry,
1700                                      SMB_ACL_PERMSET_T permset)
1701 {
1702         VFS_FIND(sys_acl_set_permset);
1703         return handle->fns->sys_acl_set_permset(handle, entry, permset);
1704 }
1705
1706 int smb_vfs_call_sys_acl_valid(struct vfs_handle_struct *handle,
1707                                SMB_ACL_T theacl)
1708 {
1709         VFS_FIND(sys_acl_valid);
1710         return handle->fns->sys_acl_valid(handle, theacl);
1711 }
1712
1713 int smb_vfs_call_sys_acl_set_file(struct vfs_handle_struct *handle,
1714                                   const char *name, SMB_ACL_TYPE_T acltype,
1715                                   SMB_ACL_T theacl)
1716 {
1717         VFS_FIND(sys_acl_set_file);
1718         return handle->fns->sys_acl_set_file(handle, name, acltype, theacl);
1719 }
1720
1721 int smb_vfs_call_sys_acl_set_fd(struct vfs_handle_struct *handle,
1722                                 struct files_struct *fsp, SMB_ACL_T theacl)
1723 {
1724         VFS_FIND(sys_acl_set_fd);
1725         return handle->fns->sys_acl_set_fd(handle, fsp, theacl);
1726 }
1727
1728 int smb_vfs_call_sys_acl_delete_def_file(struct vfs_handle_struct *handle,
1729                                          const char *path)
1730 {
1731         VFS_FIND(sys_acl_delete_def_file);
1732         return handle->fns->sys_acl_delete_def_file(handle, path);
1733 }
1734
1735 int smb_vfs_call_sys_acl_get_perm(struct vfs_handle_struct *handle,
1736                                   SMB_ACL_PERMSET_T permset,
1737                                   SMB_ACL_PERM_T perm)
1738 {
1739         VFS_FIND(sys_acl_get_perm);
1740         return handle->fns->sys_acl_get_perm(handle, permset, perm);
1741 }
1742
1743 int smb_vfs_call_sys_acl_free_text(struct vfs_handle_struct *handle,
1744                                    char *text)
1745 {
1746         VFS_FIND(sys_acl_free_text);
1747         return handle->fns->sys_acl_free_text(handle, text);
1748 }
1749
1750 int smb_vfs_call_sys_acl_free_acl(struct vfs_handle_struct *handle,
1751                                   SMB_ACL_T posix_acl)
1752 {
1753         VFS_FIND(sys_acl_free_acl);
1754         return handle->fns->sys_acl_free_acl(handle, posix_acl);
1755 }
1756
1757 int smb_vfs_call_sys_acl_free_qualifier(struct vfs_handle_struct *handle,
1758                                         void *qualifier, SMB_ACL_TAG_T tagtype)
1759 {
1760         VFS_FIND(sys_acl_free_qualifier);
1761         return handle->fns->sys_acl_free_qualifier(handle, qualifier, tagtype);
1762 }
1763
1764 ssize_t smb_vfs_call_getxattr(struct vfs_handle_struct *handle,
1765                               const char *path, const char *name, void *value,
1766                               size_t size)
1767 {
1768         VFS_FIND(getxattr);
1769         return handle->fns->getxattr(handle, path, name, value, size);
1770 }
1771
1772 ssize_t smb_vfs_call_lgetxattr(struct vfs_handle_struct *handle,
1773                                const char *path, const char *name, void *value,
1774                                size_t size)
1775 {
1776         VFS_FIND(lgetxattr);
1777         return handle->fns->lgetxattr(handle, path, name, value, size);
1778 }
1779
1780 ssize_t smb_vfs_call_fgetxattr(struct vfs_handle_struct *handle,
1781                                struct files_struct *fsp, const char *name,
1782                                void *value, size_t size)
1783 {
1784         VFS_FIND(fgetxattr);
1785         return handle->fns->fgetxattr(handle, fsp, name, value, size);
1786 }
1787
1788 ssize_t smb_vfs_call_listxattr(struct vfs_handle_struct *handle,
1789                                const char *path, char *list, size_t size)
1790 {
1791         VFS_FIND(listxattr);
1792         return handle->fns->listxattr(handle, path, list, size);
1793 }
1794
1795 ssize_t smb_vfs_call_llistxattr(struct vfs_handle_struct *handle,
1796                                 const char *path, char *list, size_t size)
1797 {
1798         VFS_FIND(llistxattr);
1799         return handle->fns->llistxattr(handle, path, list, size);
1800 }
1801
1802 ssize_t smb_vfs_call_flistxattr(struct vfs_handle_struct *handle,
1803                                 struct files_struct *fsp, char *list,
1804                                 size_t size)
1805 {
1806         VFS_FIND(flistxattr);
1807         return handle->fns->flistxattr(handle, fsp, list, size);
1808 }
1809
1810 int smb_vfs_call_removexattr(struct vfs_handle_struct *handle,
1811                              const char *path, const char *name)
1812 {
1813         VFS_FIND(removexattr);
1814         return handle->fns->removexattr(handle, path, name);
1815 }
1816
1817 int smb_vfs_call_lremovexattr(struct vfs_handle_struct *handle,
1818                               const char *path, const char *name)
1819 {
1820         VFS_FIND(lremovexattr);
1821         return handle->fns->lremovexattr(handle, path, name);
1822 }
1823
1824 int smb_vfs_call_fremovexattr(struct vfs_handle_struct *handle,
1825                               struct files_struct *fsp, const char *name)
1826 {
1827         VFS_FIND(fremovexattr);
1828         return handle->fns->fremovexattr(handle, fsp, name);
1829 }
1830
1831 int smb_vfs_call_setxattr(struct vfs_handle_struct *handle, const char *path,
1832                           const char *name, const void *value, size_t size,
1833                           int flags)
1834 {
1835         VFS_FIND(setxattr);
1836         return handle->fns->setxattr(handle, path, name, value, size, flags);
1837 }
1838
1839 int smb_vfs_call_lsetxattr(struct vfs_handle_struct *handle, const char *path,
1840                            const char *name, const void *value, size_t size,
1841                            int flags)
1842 {
1843         VFS_FIND(lsetxattr);
1844         return handle->fns->lsetxattr(handle, path, name, value, size, flags);
1845 }
1846
1847 int smb_vfs_call_fsetxattr(struct vfs_handle_struct *handle,
1848                            struct files_struct *fsp, const char *name,
1849                            const void *value, size_t size, int flags)
1850 {
1851         VFS_FIND(fsetxattr);
1852         return handle->fns->fsetxattr(handle, fsp, name, value, size, flags);
1853 }
1854
1855 int smb_vfs_call_aio_read(struct vfs_handle_struct *handle,
1856                           struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1857 {
1858         VFS_FIND(aio_read);
1859         return handle->fns->aio_read(handle, fsp, aiocb);
1860 }
1861
1862 int smb_vfs_call_aio_write(struct vfs_handle_struct *handle,
1863                            struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1864 {
1865         VFS_FIND(aio_write);
1866         return handle->fns->aio_write(handle, fsp, aiocb);
1867 }
1868
1869 ssize_t smb_vfs_call_aio_return_fn(struct vfs_handle_struct *handle,
1870                                    struct files_struct *fsp,
1871                                    SMB_STRUCT_AIOCB *aiocb)
1872 {
1873         VFS_FIND(aio_return_fn);
1874         return handle->fns->aio_return_fn(handle, fsp, aiocb);
1875 }
1876
1877 int smb_vfs_call_aio_cancel(struct vfs_handle_struct *handle,
1878                             struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1879 {
1880         VFS_FIND(aio_cancel);
1881         return handle->fns->aio_cancel(handle, fsp, aiocb);
1882 }
1883
1884 int smb_vfs_call_aio_error_fn(struct vfs_handle_struct *handle,
1885                               struct files_struct *fsp,
1886                               SMB_STRUCT_AIOCB *aiocb)
1887 {
1888         VFS_FIND(aio_error_fn);
1889         return handle->fns->aio_error_fn(handle, fsp, aiocb);
1890 }
1891
1892 int smb_vfs_call_aio_fsync(struct vfs_handle_struct *handle,
1893                            struct files_struct *fsp, int op,
1894                            SMB_STRUCT_AIOCB *aiocb)
1895 {
1896         VFS_FIND(aio_fsync);
1897         return handle->fns->aio_fsync(handle, fsp, op, aiocb);
1898 }
1899
1900 int smb_vfs_call_aio_suspend(struct vfs_handle_struct *handle,
1901                              struct files_struct *fsp,
1902                              const SMB_STRUCT_AIOCB * const aiocb[], int n,
1903                              const struct timespec *timeout)
1904 {
1905         VFS_FIND(aio_suspend);
1906         return handle->fns->aio_suspend(handle, fsp, aiocb, n, timeout);
1907 }
1908
1909 bool smb_vfs_call_aio_force(struct vfs_handle_struct *handle,
1910                             struct files_struct *fsp)
1911 {
1912         VFS_FIND(aio_force);
1913         return handle->fns->aio_force(handle, fsp);
1914 }
1915
1916 bool smb_vfs_call_is_offline(struct vfs_handle_struct *handle,
1917                              const char *path, SMB_STRUCT_STAT *sbuf)
1918 {
1919         VFS_FIND(is_offline);
1920         return handle->fns->is_offline(handle, path, sbuf);
1921 }
1922
1923 int smb_vfs_call_set_offline(struct vfs_handle_struct *handle,
1924                              const char *path)
1925 {
1926         VFS_FIND(set_offline);
1927         return handle->fns->set_offline(handle, path);
1928 }