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