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         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                         enum timestamp_set_resolution *p_ts_res)
1101 {
1102         VFS_FIND(fs_capabilities);
1103         return handle->fns->fs_capabilities(handle, p_ts_res);
1104 }
1105
1106 SMB_STRUCT_DIR *smb_vfs_call_opendir(struct vfs_handle_struct *handle,
1107                                      const char *fname, const char *mask,
1108                                      uint32 attributes)
1109 {
1110         VFS_FIND(opendir);
1111         return handle->fns->opendir(handle, fname, mask, attributes);
1112 }
1113
1114 SMB_STRUCT_DIRENT *smb_vfs_call_readdir(struct vfs_handle_struct *handle,
1115                                               SMB_STRUCT_DIR *dirp,
1116                                               SMB_STRUCT_STAT *sbuf)
1117 {
1118         VFS_FIND(readdir);
1119         return handle->fns->readdir(handle, dirp, sbuf);
1120 }
1121
1122 void smb_vfs_call_seekdir(struct vfs_handle_struct *handle,
1123                           SMB_STRUCT_DIR *dirp, long offset)
1124 {
1125         VFS_FIND(seekdir);
1126         handle->fns->seekdir(handle, dirp, offset);
1127 }
1128
1129 long smb_vfs_call_telldir(struct vfs_handle_struct *handle,
1130                           SMB_STRUCT_DIR *dirp)
1131 {
1132         VFS_FIND(telldir);
1133         return handle->fns->telldir(handle, dirp);
1134 }
1135
1136 void smb_vfs_call_rewind_dir(struct vfs_handle_struct *handle,
1137                              SMB_STRUCT_DIR *dirp)
1138 {
1139         VFS_FIND(rewind_dir);
1140         handle->fns->rewind_dir(handle, dirp);
1141 }
1142
1143 int smb_vfs_call_mkdir(struct vfs_handle_struct *handle, const char *path,
1144                        mode_t mode)
1145 {
1146         VFS_FIND(mkdir);
1147         return handle->fns->mkdir(handle, path, mode);
1148 }
1149
1150 int smb_vfs_call_rmdir(struct vfs_handle_struct *handle, const char *path)
1151 {
1152         VFS_FIND(rmdir);
1153         return handle->fns->rmdir(handle, path);
1154 }
1155
1156 int smb_vfs_call_closedir(struct vfs_handle_struct *handle,
1157                           SMB_STRUCT_DIR *dir)
1158 {
1159         VFS_FIND(closedir);
1160         return handle->fns->closedir(handle, dir);
1161 }
1162
1163 void smb_vfs_call_init_search_op(struct vfs_handle_struct *handle,
1164                                  SMB_STRUCT_DIR *dirp)
1165 {
1166         VFS_FIND(init_search_op);
1167         handle->fns->init_search_op(handle, dirp);
1168 }
1169
1170 int smb_vfs_call_open(struct vfs_handle_struct *handle,
1171                       struct smb_filename *smb_fname, struct files_struct *fsp,
1172                       int flags, mode_t mode)
1173 {
1174         VFS_FIND(open);
1175         return handle->fns->open(handle, smb_fname, fsp, flags, mode);
1176 }
1177
1178 NTSTATUS smb_vfs_call_create_file(struct vfs_handle_struct *handle,
1179                                   struct smb_request *req,
1180                                   uint16_t root_dir_fid,
1181                                   struct smb_filename *smb_fname,
1182                                   uint32_t access_mask,
1183                                   uint32_t share_access,
1184                                   uint32_t create_disposition,
1185                                   uint32_t create_options,
1186                                   uint32_t file_attributes,
1187                                   uint32_t oplock_request,
1188                                   uint64_t allocation_size,
1189                                   struct security_descriptor *sd,
1190                                   struct ea_list *ea_list,
1191                                   files_struct **result,
1192                                   int *pinfo)
1193 {
1194         VFS_FIND(create_file);
1195         return handle->fns->create_file(
1196                 handle, req, root_dir_fid, smb_fname, access_mask,
1197                 share_access, create_disposition, create_options,
1198                 file_attributes, oplock_request, allocation_size, sd, ea_list,
1199                 result, pinfo);
1200 }
1201
1202 int smb_vfs_call_close_fn(struct vfs_handle_struct *handle,
1203                           struct files_struct *fsp)
1204 {
1205         VFS_FIND(close_fn);
1206         return handle->fns->close_fn(handle, fsp);
1207 }
1208
1209 ssize_t smb_vfs_call_vfs_read(struct vfs_handle_struct *handle,
1210                               struct files_struct *fsp, void *data, size_t n)
1211 {
1212         VFS_FIND(vfs_read);
1213         return handle->fns->vfs_read(handle, fsp, data, n);
1214 }
1215
1216 ssize_t smb_vfs_call_pread(struct vfs_handle_struct *handle,
1217                            struct files_struct *fsp, void *data, size_t n,
1218                            SMB_OFF_T offset)
1219 {
1220         VFS_FIND(pread);
1221         return handle->fns->pread(handle, fsp, data, n, offset);
1222 }
1223
1224 ssize_t smb_vfs_call_write(struct vfs_handle_struct *handle,
1225                            struct files_struct *fsp, const void *data,
1226                            size_t n)
1227 {
1228         VFS_FIND(write);
1229         return handle->fns->write(handle, fsp, data, n);
1230 }
1231
1232 ssize_t smb_vfs_call_pwrite(struct vfs_handle_struct *handle,
1233                             struct files_struct *fsp, const void *data,
1234                             size_t n, SMB_OFF_T offset)
1235 {
1236         VFS_FIND(pwrite);
1237         return handle->fns->pwrite(handle, fsp, data, n, offset);
1238 }
1239
1240 SMB_OFF_T smb_vfs_call_lseek(struct vfs_handle_struct *handle,
1241                              struct files_struct *fsp, SMB_OFF_T offset,
1242                              int whence)
1243 {
1244         VFS_FIND(lseek);
1245         return handle->fns->lseek(handle, fsp, offset, whence);
1246 }
1247
1248 ssize_t smb_vfs_call_sendfile(struct vfs_handle_struct *handle, int tofd,
1249                               files_struct *fromfsp, const DATA_BLOB *header,
1250                               SMB_OFF_T offset, size_t count)
1251 {
1252         VFS_FIND(sendfile);
1253         return handle->fns->sendfile(handle, tofd, fromfsp, header, offset,
1254                                      count);
1255 }
1256
1257 ssize_t smb_vfs_call_recvfile(struct vfs_handle_struct *handle, int fromfd,
1258                               files_struct *tofsp, SMB_OFF_T offset,
1259                               size_t count)
1260 {
1261         VFS_FIND(recvfile);
1262         return handle->fns->recvfile(handle, fromfd, tofsp, offset, count);
1263 }
1264
1265 int smb_vfs_call_rename(struct vfs_handle_struct *handle,
1266                         const struct smb_filename *smb_fname_src,
1267                         const struct smb_filename *smb_fname_dst)
1268 {
1269         VFS_FIND(rename);
1270         return handle->fns->rename(handle, smb_fname_src, smb_fname_dst);
1271 }
1272
1273 int smb_vfs_call_fsync(struct vfs_handle_struct *handle,
1274                        struct files_struct *fsp)
1275 {
1276         VFS_FIND(fsync);
1277         return handle->fns->fsync(handle, fsp);
1278 }
1279
1280 int smb_vfs_call_stat(struct vfs_handle_struct *handle,
1281                       struct smb_filename *smb_fname)
1282 {
1283         VFS_FIND(stat);
1284         return handle->fns->stat(handle, smb_fname);
1285 }
1286
1287 int smb_vfs_call_fstat(struct vfs_handle_struct *handle,
1288                        struct files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1289 {
1290         VFS_FIND(fstat);
1291         return handle->fns->fstat(handle, fsp, sbuf);
1292 }
1293
1294 int smb_vfs_call_lstat(struct vfs_handle_struct *handle,
1295                        struct smb_filename *smb_filename)
1296 {
1297         VFS_FIND(lstat);
1298         return handle->fns->lstat(handle, smb_filename);
1299 }
1300
1301 uint64_t smb_vfs_call_get_alloc_size(struct vfs_handle_struct *handle,
1302                                      struct files_struct *fsp,
1303                                      const SMB_STRUCT_STAT *sbuf)
1304 {
1305         VFS_FIND(get_alloc_size);
1306         return handle->fns->get_alloc_size(handle, fsp, sbuf);
1307 }
1308
1309 int smb_vfs_call_unlink(struct vfs_handle_struct *handle,
1310                         const struct smb_filename *smb_fname)
1311 {
1312         VFS_FIND(unlink);
1313         return handle->fns->unlink(handle, smb_fname);
1314 }
1315
1316 int smb_vfs_call_chmod(struct vfs_handle_struct *handle, const char *path,
1317                        mode_t mode)
1318 {
1319         VFS_FIND(chmod);
1320         return handle->fns->chmod(handle, path, mode);
1321 }
1322
1323 int smb_vfs_call_fchmod(struct vfs_handle_struct *handle,
1324                         struct files_struct *fsp, mode_t mode)
1325 {
1326         VFS_FIND(fchmod);
1327         return handle->fns->fchmod(handle, fsp, mode);
1328 }
1329
1330 int smb_vfs_call_chown(struct vfs_handle_struct *handle, const char *path,
1331                        uid_t uid, gid_t gid)
1332 {
1333         VFS_FIND(chown);
1334         return handle->fns->chown(handle, path, uid, gid);
1335 }
1336
1337 int smb_vfs_call_fchown(struct vfs_handle_struct *handle,
1338                         struct files_struct *fsp, uid_t uid, gid_t gid)
1339 {
1340         VFS_FIND(fchown);
1341         return handle->fns->fchown(handle, fsp, uid, gid);
1342 }
1343
1344 int smb_vfs_call_lchown(struct vfs_handle_struct *handle, const char *path,
1345                         uid_t uid, gid_t gid)
1346 {
1347         VFS_FIND(lchown);
1348         return handle->fns->lchown(handle, path, uid, gid);
1349 }
1350
1351 int smb_vfs_call_chdir(struct vfs_handle_struct *handle, const char *path)
1352 {
1353         VFS_FIND(chdir);
1354         return handle->fns->chdir(handle, path);
1355 }
1356
1357 char *smb_vfs_call_getwd(struct vfs_handle_struct *handle, char *buf)
1358 {
1359         VFS_FIND(getwd);
1360         return handle->fns->getwd(handle, buf);
1361 }
1362
1363 int smb_vfs_call_ntimes(struct vfs_handle_struct *handle,
1364                         const struct smb_filename *smb_fname,
1365                         struct smb_file_time *ft)
1366 {
1367         VFS_FIND(ntimes);
1368         return handle->fns->ntimes(handle, smb_fname, ft);
1369 }
1370
1371 int smb_vfs_call_ftruncate(struct vfs_handle_struct *handle,
1372                            struct files_struct *fsp, SMB_OFF_T offset)
1373 {
1374         VFS_FIND(ftruncate);
1375         return handle->fns->ftruncate(handle, fsp, offset);
1376 }
1377
1378 int smb_vfs_call_kernel_flock(struct vfs_handle_struct *handle,
1379                               struct files_struct *fsp, uint32 share_mode)
1380 {
1381         VFS_FIND(kernel_flock);
1382         return handle->fns->kernel_flock(handle, fsp, share_mode);
1383 }
1384
1385 int smb_vfs_call_linux_setlease(struct vfs_handle_struct *handle,
1386                                 struct files_struct *fsp, int leasetype)
1387 {
1388         VFS_FIND(linux_setlease);
1389         return handle->fns->linux_setlease(handle, fsp, leasetype);
1390 }
1391
1392 int smb_vfs_call_symlink(struct vfs_handle_struct *handle, const char *oldpath,
1393                          const char *newpath)
1394 {
1395         VFS_FIND(symlink);
1396         return handle->fns->symlink(handle, oldpath, newpath);
1397 }
1398
1399 int smb_vfs_call_vfs_readlink(struct vfs_handle_struct *handle,
1400                               const char *path, char *buf, size_t bufsiz)
1401 {
1402         VFS_FIND(vfs_readlink);
1403         return handle->fns->vfs_readlink(handle, path, buf, bufsiz);
1404 }
1405
1406 int smb_vfs_call_link(struct vfs_handle_struct *handle, const char *oldpath,
1407                       const char *newpath)
1408 {
1409         VFS_FIND(link);
1410         return handle->fns->link(handle, oldpath, newpath);
1411 }
1412
1413 int smb_vfs_call_mknod(struct vfs_handle_struct *handle, const char *path,
1414                        mode_t mode, SMB_DEV_T dev)
1415 {
1416         VFS_FIND(mknod);
1417         return handle->fns->mknod(handle, path, mode, dev);
1418 }
1419
1420 char *smb_vfs_call_realpath(struct vfs_handle_struct *handle,
1421                             const char *path, char *resolved_path)
1422 {
1423         VFS_FIND(realpath);
1424         return handle->fns->realpath(handle, path, resolved_path);
1425 }
1426
1427 NTSTATUS smb_vfs_call_notify_watch(struct vfs_handle_struct *handle,
1428                                    struct sys_notify_context *ctx,
1429                                    struct notify_entry *e,
1430                                    void (*callback)(struct sys_notify_context *ctx,
1431                                                     void *private_data,
1432                                                     struct notify_event *ev),
1433                                    void *private_data, void *handle_p)
1434 {
1435         VFS_FIND(notify_watch);
1436         return handle->fns->notify_watch(handle, ctx, e, callback,
1437                                          private_data, handle_p);
1438 }
1439
1440 int smb_vfs_call_chflags(struct vfs_handle_struct *handle, const char *path,
1441                          unsigned int flags)
1442 {
1443         VFS_FIND(chflags);
1444         return handle->fns->chflags(handle, path, flags);
1445 }
1446
1447 struct file_id smb_vfs_call_file_id_create(struct vfs_handle_struct *handle,
1448                                            const SMB_STRUCT_STAT *sbuf)
1449 {
1450         VFS_FIND(file_id_create);
1451         return handle->fns->file_id_create(handle, sbuf);
1452 }
1453
1454 NTSTATUS smb_vfs_call_streaminfo(struct vfs_handle_struct *handle,
1455                                  struct files_struct *fsp,
1456                                  const char *fname,
1457                                  TALLOC_CTX *mem_ctx,
1458                                  unsigned int *num_streams,
1459                                  struct stream_struct **streams)
1460 {
1461         VFS_FIND(streaminfo);
1462         return handle->fns->streaminfo(handle, fsp, fname, mem_ctx,
1463                                        num_streams, streams);
1464 }
1465
1466 int smb_vfs_call_get_real_filename(struct vfs_handle_struct *handle,
1467                                    const char *path, const char *name,
1468                                    TALLOC_CTX *mem_ctx, char **found_name)
1469 {
1470         VFS_FIND(get_real_filename);
1471         return handle->fns->get_real_filename(handle, path, name, mem_ctx,
1472                                               found_name);
1473 }
1474
1475 const char *smb_vfs_call_connectpath(struct vfs_handle_struct *handle,
1476                                      const char *filename)
1477 {
1478         VFS_FIND(connectpath);
1479         return handle->fns->connectpath(handle, filename);
1480 }
1481
1482 bool smb_vfs_call_strict_lock(struct vfs_handle_struct *handle,
1483                               struct files_struct *fsp,
1484                               struct lock_struct *plock)
1485 {
1486         VFS_FIND(strict_lock);
1487         return handle->fns->strict_lock(handle, fsp, plock);
1488 }
1489
1490 void smb_vfs_call_strict_unlock(struct vfs_handle_struct *handle,
1491                                 struct files_struct *fsp,
1492                                 struct lock_struct *plock)
1493 {
1494         VFS_FIND(strict_unlock);
1495         handle->fns->strict_unlock(handle, fsp, plock);
1496 }
1497
1498 NTSTATUS smb_vfs_call_fget_nt_acl(struct vfs_handle_struct *handle,
1499                                   struct files_struct *fsp,
1500                                   uint32 security_info,
1501                                   struct security_descriptor **ppdesc)
1502 {
1503         VFS_FIND(fget_nt_acl);
1504         return handle->fns->fget_nt_acl(handle, fsp, security_info,
1505                                         ppdesc);
1506 }
1507
1508 NTSTATUS smb_vfs_call_get_nt_acl(struct vfs_handle_struct *handle,
1509                                  const char *name,
1510                                  uint32 security_info,
1511                                  struct security_descriptor **ppdesc)
1512 {
1513         VFS_FIND(get_nt_acl);
1514         return handle->fns->get_nt_acl(handle, name, security_info, ppdesc);
1515 }
1516
1517 NTSTATUS smb_vfs_call_fset_nt_acl(struct vfs_handle_struct *handle,
1518                                   struct files_struct *fsp,
1519                                   uint32 security_info_sent,
1520                                   const struct security_descriptor *psd)
1521 {
1522         VFS_FIND(fset_nt_acl);
1523         return handle->fns->fset_nt_acl(handle, fsp, security_info_sent, psd);
1524 }
1525
1526 int smb_vfs_call_chmod_acl(struct vfs_handle_struct *handle, const char *name,
1527                            mode_t mode)
1528 {
1529         VFS_FIND(chmod_acl);
1530         return handle->fns->chmod_acl(handle, name, mode);
1531 }
1532
1533 int smb_vfs_call_fchmod_acl(struct vfs_handle_struct *handle,
1534                             struct files_struct *fsp, mode_t mode)
1535 {
1536         VFS_FIND(fchmod_acl);
1537         return handle->fns->fchmod_acl(handle, fsp, mode);
1538 }
1539
1540 int smb_vfs_call_sys_acl_get_entry(struct vfs_handle_struct *handle,
1541                                    SMB_ACL_T theacl, int entry_id,
1542                                    SMB_ACL_ENTRY_T *entry_p)
1543 {
1544         VFS_FIND(sys_acl_get_entry);
1545         return handle->fns->sys_acl_get_entry(handle, theacl, entry_id,
1546                                               entry_p);
1547 }
1548
1549 int smb_vfs_call_sys_acl_get_tag_type(struct vfs_handle_struct *handle,
1550                                       SMB_ACL_ENTRY_T entry_d,
1551                                       SMB_ACL_TAG_T *tag_type_p)
1552 {
1553         VFS_FIND(sys_acl_get_tag_type);
1554         return handle->fns->sys_acl_get_tag_type(handle, entry_d, tag_type_p);
1555 }
1556
1557 int smb_vfs_call_sys_acl_get_permset(struct vfs_handle_struct *handle,
1558                                      SMB_ACL_ENTRY_T entry_d,
1559                                      SMB_ACL_PERMSET_T *permset_p)
1560 {
1561         VFS_FIND(sys_acl_get_permset);
1562         return handle->fns->sys_acl_get_permset(handle, entry_d, permset_p);
1563 }
1564
1565 void * smb_vfs_call_sys_acl_get_qualifier(struct vfs_handle_struct *handle,
1566                                           SMB_ACL_ENTRY_T entry_d)
1567 {
1568         VFS_FIND(sys_acl_get_qualifier);
1569         return handle->fns->sys_acl_get_qualifier(handle, entry_d);
1570 }
1571
1572 SMB_ACL_T smb_vfs_call_sys_acl_get_file(struct vfs_handle_struct *handle,
1573                                         const char *path_p,
1574                                         SMB_ACL_TYPE_T type)
1575 {
1576         VFS_FIND(sys_acl_get_file);
1577         return handle->fns->sys_acl_get_file(handle, path_p, type);
1578 }
1579
1580 SMB_ACL_T smb_vfs_call_sys_acl_get_fd(struct vfs_handle_struct *handle,
1581                                       struct files_struct *fsp)
1582 {
1583         VFS_FIND(sys_acl_get_fd);
1584         return handle->fns->sys_acl_get_fd(handle, fsp);
1585 }
1586
1587 int smb_vfs_call_sys_acl_clear_perms(struct vfs_handle_struct *handle,
1588                                      SMB_ACL_PERMSET_T permset)
1589 {
1590         VFS_FIND(sys_acl_clear_perms);
1591         return handle->fns->sys_acl_clear_perms(handle, permset);
1592 }
1593
1594 int smb_vfs_call_sys_acl_add_perm(struct vfs_handle_struct *handle,
1595                                   SMB_ACL_PERMSET_T permset,
1596                                   SMB_ACL_PERM_T perm)
1597 {
1598         VFS_FIND(sys_acl_add_perm);
1599         return handle->fns->sys_acl_add_perm(handle, permset, perm);
1600 }
1601
1602 char * smb_vfs_call_sys_acl_to_text(struct vfs_handle_struct *handle,
1603                                     SMB_ACL_T theacl, ssize_t *plen)
1604 {
1605         VFS_FIND(sys_acl_to_text);
1606         return handle->fns->sys_acl_to_text(handle, theacl, plen);
1607 }
1608
1609 SMB_ACL_T smb_vfs_call_sys_acl_init(struct vfs_handle_struct *handle,
1610                                     int count)
1611 {
1612         VFS_FIND(sys_acl_init);
1613         return handle->fns->sys_acl_init(handle, count);
1614 }
1615
1616 int smb_vfs_call_sys_acl_create_entry(struct vfs_handle_struct *handle,
1617                                       SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry)
1618 {
1619         VFS_FIND(sys_acl_create_entry);
1620         return handle->fns->sys_acl_create_entry(handle, pacl, pentry);
1621 }
1622
1623 int smb_vfs_call_sys_acl_set_tag_type(struct vfs_handle_struct *handle,
1624                                       SMB_ACL_ENTRY_T entry,
1625                                       SMB_ACL_TAG_T tagtype)
1626 {
1627         VFS_FIND(sys_acl_set_tag_type);
1628         return handle->fns->sys_acl_set_tag_type(handle, entry, tagtype);
1629 }
1630
1631 int smb_vfs_call_sys_acl_set_qualifier(struct vfs_handle_struct *handle,
1632                                        SMB_ACL_ENTRY_T entry, void *qual)
1633 {
1634         VFS_FIND(sys_acl_set_qualifier);
1635         return handle->fns->sys_acl_set_qualifier(handle, entry, qual);
1636 }
1637
1638 int smb_vfs_call_sys_acl_set_permset(struct vfs_handle_struct *handle,
1639                                      SMB_ACL_ENTRY_T entry,
1640                                      SMB_ACL_PERMSET_T permset)
1641 {
1642         VFS_FIND(sys_acl_set_permset);
1643         return handle->fns->sys_acl_set_permset(handle, entry, permset);
1644 }
1645
1646 int smb_vfs_call_sys_acl_valid(struct vfs_handle_struct *handle,
1647                                SMB_ACL_T theacl)
1648 {
1649         VFS_FIND(sys_acl_valid);
1650         return handle->fns->sys_acl_valid(handle, theacl);
1651 }
1652
1653 int smb_vfs_call_sys_acl_set_file(struct vfs_handle_struct *handle,
1654                                   const char *name, SMB_ACL_TYPE_T acltype,
1655                                   SMB_ACL_T theacl)
1656 {
1657         VFS_FIND(sys_acl_set_file);
1658         return handle->fns->sys_acl_set_file(handle, name, acltype, theacl);
1659 }
1660
1661 int smb_vfs_call_sys_acl_set_fd(struct vfs_handle_struct *handle,
1662                                 struct files_struct *fsp, SMB_ACL_T theacl)
1663 {
1664         VFS_FIND(sys_acl_set_fd);
1665         return handle->fns->sys_acl_set_fd(handle, fsp, theacl);
1666 }
1667
1668 int smb_vfs_call_sys_acl_delete_def_file(struct vfs_handle_struct *handle,
1669                                          const char *path)
1670 {
1671         VFS_FIND(sys_acl_delete_def_file);
1672         return handle->fns->sys_acl_delete_def_file(handle, path);
1673 }
1674
1675 int smb_vfs_call_sys_acl_get_perm(struct vfs_handle_struct *handle,
1676                                   SMB_ACL_PERMSET_T permset,
1677                                   SMB_ACL_PERM_T perm)
1678 {
1679         VFS_FIND(sys_acl_get_perm);
1680         return handle->fns->sys_acl_get_perm(handle, permset, perm);
1681 }
1682
1683 int smb_vfs_call_sys_acl_free_text(struct vfs_handle_struct *handle,
1684                                    char *text)
1685 {
1686         VFS_FIND(sys_acl_free_text);
1687         return handle->fns->sys_acl_free_text(handle, text);
1688 }
1689
1690 int smb_vfs_call_sys_acl_free_acl(struct vfs_handle_struct *handle,
1691                                   SMB_ACL_T posix_acl)
1692 {
1693         VFS_FIND(sys_acl_free_acl);
1694         return handle->fns->sys_acl_free_acl(handle, posix_acl);
1695 }
1696
1697 int smb_vfs_call_sys_acl_free_qualifier(struct vfs_handle_struct *handle,
1698                                         void *qualifier, SMB_ACL_TAG_T tagtype)
1699 {
1700         VFS_FIND(sys_acl_free_qualifier);
1701         return handle->fns->sys_acl_free_qualifier(handle, qualifier, tagtype);
1702 }
1703
1704 ssize_t smb_vfs_call_getxattr(struct vfs_handle_struct *handle,
1705                               const char *path, const char *name, void *value,
1706                               size_t size)
1707 {
1708         VFS_FIND(getxattr);
1709         return handle->fns->getxattr(handle, path, name, value, size);
1710 }
1711
1712 ssize_t smb_vfs_call_lgetxattr(struct vfs_handle_struct *handle,
1713                                const char *path, const char *name, void *value,
1714                                size_t size)
1715 {
1716         VFS_FIND(lgetxattr);
1717         return handle->fns->lgetxattr(handle, path, name, value, size);
1718 }
1719
1720 ssize_t smb_vfs_call_fgetxattr(struct vfs_handle_struct *handle,
1721                                struct files_struct *fsp, const char *name,
1722                                void *value, size_t size)
1723 {
1724         VFS_FIND(fgetxattr);
1725         return handle->fns->fgetxattr(handle, fsp, name, value, size);
1726 }
1727
1728 ssize_t smb_vfs_call_listxattr(struct vfs_handle_struct *handle,
1729                                const char *path, char *list, size_t size)
1730 {
1731         VFS_FIND(listxattr);
1732         return handle->fns->listxattr(handle, path, list, size);
1733 }
1734
1735 ssize_t smb_vfs_call_llistxattr(struct vfs_handle_struct *handle,
1736                                 const char *path, char *list, size_t size)
1737 {
1738         VFS_FIND(llistxattr);
1739         return handle->fns->llistxattr(handle, path, list, size);
1740 }
1741
1742 ssize_t smb_vfs_call_flistxattr(struct vfs_handle_struct *handle,
1743                                 struct files_struct *fsp, char *list,
1744                                 size_t size)
1745 {
1746         VFS_FIND(flistxattr);
1747         return handle->fns->flistxattr(handle, fsp, list, size);
1748 }
1749
1750 int smb_vfs_call_removexattr(struct vfs_handle_struct *handle,
1751                              const char *path, const char *name)
1752 {
1753         VFS_FIND(removexattr);
1754         return handle->fns->removexattr(handle, path, name);
1755 }
1756
1757 int smb_vfs_call_lremovexattr(struct vfs_handle_struct *handle,
1758                               const char *path, const char *name)
1759 {
1760         VFS_FIND(lremovexattr);
1761         return handle->fns->lremovexattr(handle, path, name);
1762 }
1763
1764 int smb_vfs_call_fremovexattr(struct vfs_handle_struct *handle,
1765                               struct files_struct *fsp, const char *name)
1766 {
1767         VFS_FIND(fremovexattr);
1768         return handle->fns->fremovexattr(handle, fsp, name);
1769 }
1770
1771 int smb_vfs_call_setxattr(struct vfs_handle_struct *handle, const char *path,
1772                           const char *name, const void *value, size_t size,
1773                           int flags)
1774 {
1775         VFS_FIND(setxattr);
1776         return handle->fns->setxattr(handle, path, name, value, size, flags);
1777 }
1778
1779 int smb_vfs_call_lsetxattr(struct vfs_handle_struct *handle, const char *path,
1780                            const char *name, const void *value, size_t size,
1781                            int flags)
1782 {
1783         VFS_FIND(lsetxattr);
1784         return handle->fns->lsetxattr(handle, path, name, value, size, flags);
1785 }
1786
1787 int smb_vfs_call_fsetxattr(struct vfs_handle_struct *handle,
1788                            struct files_struct *fsp, const char *name,
1789                            const void *value, size_t size, int flags)
1790 {
1791         VFS_FIND(fsetxattr);
1792         return handle->fns->fsetxattr(handle, fsp, name, value, size, flags);
1793 }
1794
1795 int smb_vfs_call_aio_read(struct vfs_handle_struct *handle,
1796                           struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1797 {
1798         VFS_FIND(aio_read);
1799         return handle->fns->aio_read(handle, fsp, aiocb);
1800 }
1801
1802 int smb_vfs_call_aio_write(struct vfs_handle_struct *handle,
1803                            struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1804 {
1805         VFS_FIND(aio_write);
1806         return handle->fns->aio_write(handle, fsp, aiocb);
1807 }
1808
1809 ssize_t smb_vfs_call_aio_return_fn(struct vfs_handle_struct *handle,
1810                                    struct files_struct *fsp,
1811                                    SMB_STRUCT_AIOCB *aiocb)
1812 {
1813         VFS_FIND(aio_return_fn);
1814         return handle->fns->aio_return_fn(handle, fsp, aiocb);
1815 }
1816
1817 int smb_vfs_call_aio_cancel(struct vfs_handle_struct *handle,
1818                             struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1819 {
1820         VFS_FIND(aio_cancel);
1821         return handle->fns->aio_cancel(handle, fsp, aiocb);
1822 }
1823
1824 int smb_vfs_call_aio_error_fn(struct vfs_handle_struct *handle,
1825                               struct files_struct *fsp,
1826                               SMB_STRUCT_AIOCB *aiocb)
1827 {
1828         VFS_FIND(aio_error_fn);
1829         return handle->fns->aio_error_fn(handle, fsp, aiocb);
1830 }
1831
1832 int smb_vfs_call_aio_fsync(struct vfs_handle_struct *handle,
1833                            struct files_struct *fsp, int op,
1834                            SMB_STRUCT_AIOCB *aiocb)
1835 {
1836         VFS_FIND(aio_fsync);
1837         return handle->fns->aio_fsync(handle, fsp, op, aiocb);
1838 }
1839
1840 int smb_vfs_call_aio_suspend(struct vfs_handle_struct *handle,
1841                              struct files_struct *fsp,
1842                              const SMB_STRUCT_AIOCB * const aiocb[], int n,
1843                              const struct timespec *timeout)
1844 {
1845         VFS_FIND(aio_suspend);
1846         return handle->fns->aio_suspend(handle, fsp, aiocb, n, timeout);
1847 }
1848
1849 bool smb_vfs_call_aio_force(struct vfs_handle_struct *handle,
1850                             struct files_struct *fsp)
1851 {
1852         VFS_FIND(aio_force);
1853         return handle->fns->aio_force(handle, fsp);
1854 }
1855
1856 bool smb_vfs_call_is_offline(struct vfs_handle_struct *handle,
1857                              const char *path, SMB_STRUCT_STAT *sbuf)
1858 {
1859         VFS_FIND(is_offline);
1860         return handle->fns->is_offline(handle, path, sbuf);
1861 }
1862
1863 int smb_vfs_call_set_offline(struct vfs_handle_struct *handle,
1864                              const char *path)
1865 {
1866         VFS_FIND(set_offline);
1867         return handle->fns->set_offline(handle, path);
1868 }