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 = NULL;
 666         NTSTATUS result;
 667
 668         if (!p)
 669                 return(NULL);
 670
 671         ptr = SMB_VFS_READDIR(conn, (DIR *)p, sbuf);
 672         if (!ptr)
 673                 return(NULL);
 674
 675         dname = talloc_strdup(talloc_tos(), ptr->d_name);
 676         if (dname == NULL) {
 677                 errno = ENOMEM;
 678                 return NULL;
 679         }
 680         result = SMB_VFS_TRANSLATE_NAME(conn, &dname,
 681                                         vfs_translate_to_windows);
 682         if (!NT_STATUS_IS_OK(result)) {
 683                 TALLOC_FREE(dname);
 684                 return NULL;
 685         }
 686
 687 #ifdef NEXT2
 688         if (telldir(p) < 0)
 689                 return(NULL);
 690 #endif
 691
 692 #ifdef HAVE_BROKEN_READDIR_NAME
 693         /* using /usr/ucb/cc is BAD */
 694         dname = dname - 2;
 695 #endif
 696
 697         return(dname);
 698 }
 699
 700 /*******************************************************************
 701  A wrapper for vfs_chdir().
 702 ********************************************************************/
 703
 704 int vfs_ChDir(connection_struct *conn, const char *path)
 705 {
 706         int res;
 707
 708         if (!LastDir) {
 709                 LastDir = SMB_STRDUP("");
 710         }
 711
 712         if (strcsequal(path,"."))
 713                 return(0);
 714
 715         if (*path == '/' && strcsequal(LastDir,path))
 716                 return(0);
 717
 718         DEBUG(4,("vfs_ChDir to %s\n",path));
 719
 720         res = SMB_VFS_CHDIR(conn,path);
 721         if (!res) {
 722                 SAFE_FREE(LastDir);
 723                 LastDir = SMB_STRDUP(path);
 724         }
 725         return(res);
 726 }
 727
 728 /*******************************************************************
 729  Return the absolute current directory path - given a UNIX pathname.
 730  Note that this path is returned in DOS format, not UNIX
 731  format. Note this can be called with conn == NULL.
 732 ********************************************************************/
 733
 734 char *vfs_GetWd(TALLOC_CTX *ctx, connection_struct *conn)
 735 {
 736         char s[PATH_MAX+1];
 737         char *result = NULL;
 738         DATA_BLOB cache_value;
 739         struct file_id key;
 740         struct smb_filename *smb_fname_dot = NULL;
 741         struct smb_filename *smb_fname_full = NULL;
 742         NTSTATUS status;
 743
 744         *s = 0;
 745
 746         if (!lp_getwd_cache()) {
 747                 goto nocache;
 748         }
 749
 750         status = create_synthetic_smb_fname(ctx, ".", NULL, NULL,
 751                                             &smb_fname_dot);
 752         if (!NT_STATUS_IS_OK(status)) {
 753                 errno = map_errno_from_nt_status(status);
 754                 goto out;
 755         }
 756
 757         if (SMB_VFS_STAT(conn, smb_fname_dot) == -1) {
 758                 /*
 759                  * Known to fail for root: the directory may be NFS-mounted
 760                  * and exported with root_squash (so has no root access).
 761                  */
 762                 DEBUG(1,("vfs_GetWd: couldn't stat \".\" error %s "
 763                          "(NFS problem ?)\n", strerror(errno) ));
 764                 goto nocache;
 765         }
 766
 767         key = vfs_file_id_from_sbuf(conn, &smb_fname_dot->st);
 768
 769         if (!memcache_lookup(smbd_memcache(), GETWD_CACHE,
 770                              data_blob_const(&key, sizeof(key)),
 771                              &cache_value)) {
 772                 goto nocache;
 773         }
 774
 775         SMB_ASSERT((cache_value.length > 0)
 776                    && (cache_value.data[cache_value.length-1] == '\0'));
 777
 778         status = create_synthetic_smb_fname(ctx, (char *)cache_value.data,
 779                                             NULL, NULL, &smb_fname_full);
 780         if (!NT_STATUS_IS_OK(status)) {
 781                 errno = map_errno_from_nt_status(status);
 782                 goto out;
 783         }
 784
 785         if ((SMB_VFS_STAT(conn, smb_fname_full) == 0) &&
 786             (smb_fname_dot->st.st_ex_dev == smb_fname_full->st.st_ex_dev) &&
 787             (smb_fname_dot->st.st_ex_ino == smb_fname_full->st.st_ex_ino) &&
 788             (S_ISDIR(smb_fname_dot->st.st_ex_mode))) {
 789                 /*
 790                  * Ok, we're done
 791                  */
 792                 result = talloc_strdup(ctx, smb_fname_full->base_name);
 793                 if (result == NULL) {
 794                         errno = ENOMEM;
 795                 }
 796                 goto out;
 797         }
 798
 799  nocache:
 800
 801         /*
 802          * We don't have the information to hand so rely on traditional
 803          * methods. The very slow getcwd, which spawns a process on some
 804          * systems, or the not quite so bad getwd.
 805          */
 806
 807         if (!SMB_VFS_GETWD(conn,s)) {
 808                 DEBUG(0, ("vfs_GetWd: SMB_VFS_GETWD call failed: %s\n",
 809                           strerror(errno)));
 810                 goto out;
 811         }
 812
 813         if (lp_getwd_cache() && VALID_STAT(smb_fname_dot->st)) {
 814                 key = vfs_file_id_from_sbuf(conn, &smb_fname_dot->st);
 815
 816                 memcache_add(smbd_memcache(), GETWD_CACHE,
 817                              data_blob_const(&key, sizeof(key)),
 818                              data_blob_const(s, strlen(s)+1));
 819         }
 820
 821         result = talloc_strdup(ctx, s);
 822         if (result == NULL) {
 823                 errno = ENOMEM;
 824         }
 825
 826  out:
 827         TALLOC_FREE(smb_fname_dot);
 828         TALLOC_FREE(smb_fname_full);
 829         return result;
 830 }
 831
 832 /*******************************************************************
 833  Reduce a file name, removing .. elements and checking that
 834  it is below dir in the heirachy. This uses realpath.
 835 ********************************************************************/
 836
 837 NTSTATUS check_reduced_name(connection_struct *conn, const char *fname)
 838 {
 839 #ifdef REALPATH_TAKES_NULL
 840         bool free_resolved_name = True;
 841 #else
 842         char resolved_name_buf[PATH_MAX+1];
 843         bool free_resolved_name = False;
 844 #endif
 845         char *resolved_name = NULL;
 846         char *p = NULL;
 847
 848         DEBUG(3,("reduce_name [%s] [%s]\n", fname, conn->connectpath));
 849
 850 #ifdef REALPATH_TAKES_NULL
 851         resolved_name = SMB_VFS_REALPATH(conn,fname,NULL);
 852 #else
 853         resolved_name = SMB_VFS_REALPATH(conn,fname,resolved_name_buf);
 854 #endif
 855
 856         if (!resolved_name) {
 857                 switch (errno) {
 858                         case ENOTDIR:
 859                                 DEBUG(3,("reduce_name: Component not a directory in getting realpath for %s\n", fname));
 860                                 return map_nt_error_from_unix(errno);
 861                         case ENOENT:
 862                         {
 863                                 TALLOC_CTX *ctx = talloc_tos();
 864                                 char *tmp_fname = NULL;
 865                                 char *last_component = NULL;
 866                                 /* Last component didn't exist. Remove it and try and canonicalise the directory. */
 867
 868                                 tmp_fname = talloc_strdup(ctx, fname);
 869                                 if (!tmp_fname) {
 870                                         return NT_STATUS_NO_MEMORY;
 871                                 }
 872                                 p = strrchr_m(tmp_fname, '/');
 873                                 if (p) {
 874                                         *p++ = '\0';
 875                                         last_component = p;
 876                                 } else {
 877                                         last_component = tmp_fname;
 878                                         tmp_fname = talloc_strdup(ctx,
 879                                                         ".");
 880                                         if (!tmp_fname) {
 881                                                 return NT_STATUS_NO_MEMORY;
 882                                         }
 883                                 }
 884
 885 #ifdef REALPATH_TAKES_NULL
 886                                 resolved_name = SMB_VFS_REALPATH(conn,tmp_fname,NULL);
 887 #else
 888                                 resolved_name = SMB_VFS_REALPATH(conn,tmp_fname,resolved_name_buf);
 889 #endif
 890                                 if (!resolved_name) {
 891                                         DEBUG(3,("reduce_name: couldn't get realpath for %s\n", fname));
 892                                         return map_nt_error_from_unix(errno);
 893                                 }
 894                                 tmp_fname = talloc_asprintf(ctx,
 895                                                 "%s/%s",
 896                                                 resolved_name,
 897                                                 last_component);
 898                                 if (!tmp_fname) {
 899                                         return NT_STATUS_NO_MEMORY;
 900                                 }
 901 #ifdef REALPATH_TAKES_NULL
 902                                 SAFE_FREE(resolved_name);
 903                                 resolved_name = SMB_STRDUP(tmp_fname);
 904                                 if (!resolved_name) {
 905                                         DEBUG(0,("reduce_name: malloc fail for %s\n", tmp_fname));
 906                                         return NT_STATUS_NO_MEMORY;
 907                                 }
 908 #else
 909                                 safe_strcpy(resolved_name_buf, tmp_fname, PATH_MAX);
 910                                 resolved_name = resolved_name_buf;
 911 #endif
 912                                 break;
 913                         }
 914                         default:
 915                                 DEBUG(1,("reduce_name: couldn't get realpath for %s\n", fname));
 916                                 return map_nt_error_from_unix(errno);
 917                 }
 918         }
 919
 920         DEBUG(10,("reduce_name realpath [%s] -> [%s]\n", fname, resolved_name));
 921
 922         if (*resolved_name != '/') {
 923                 DEBUG(0,("reduce_name: realpath doesn't return absolute paths !\n"));
 924                 if (free_resolved_name) {
 925                         SAFE_FREE(resolved_name);
 926                 }
 927                 return NT_STATUS_OBJECT_NAME_INVALID;
 928         }
 929
 930         /* Check for widelinks allowed. */
 931         if (!lp_widelinks(SNUM(conn))) {
 932                     const char *conn_rootdir;
 933
 934                     conn_rootdir = SMB_VFS_CONNECTPATH(conn, fname);
 935                     if (conn_rootdir == NULL) {
 936                             DEBUG(2, ("check_reduced_name: Could not get conn_rootdir\n"));
 937                             if (free_resolved_name) {
 938                                     SAFE_FREE(resolved_name);
 939                             }
 940                             return NT_STATUS_ACCESS_DENIED;
 941                     }
 942
 943                     if (strncmp(conn_rootdir, resolved_name,
 944                                 strlen(conn_rootdir)) != 0) {
 945                             DEBUG(2, ("reduce_name: Bad access attempt: %s is "
 946                                       "a symlink outside the share path",
 947                                       fname));
 948                             if (free_resolved_name) {
 949                                     SAFE_FREE(resolved_name);
 950                             }
 951                             return NT_STATUS_ACCESS_DENIED;
 952                     }
 953         }
 954
 955         /* Check if we are allowing users to follow symlinks */
 956         /* Patch from David Clerc <David.Clerc@cui.unige.ch>
 957                 University of Geneva */
 958
 959 #ifdef S_ISLNK
 960         if (!lp_symlinks(SNUM(conn))) {
 961                 struct smb_filename *smb_fname = NULL;
 962                 NTSTATUS status;
 963
 964                 status = create_synthetic_smb_fname(talloc_tos(), fname, NULL,
 965                                                     NULL, &smb_fname);
 966                 if (!NT_STATUS_IS_OK(status)) {
 967                         if (free_resolved_name) {
 968                                 SAFE_FREE(resolved_name);
 969                         }
 970                         return status;
 971                 }
 972
 973                 if ( (SMB_VFS_LSTAT(conn, smb_fname) != -1) &&
 974                                 (S_ISLNK(smb_fname->st.st_ex_mode)) ) {
 975                         if (free_resolved_name) {
 976                                 SAFE_FREE(resolved_name);
 977                         }
 978                         DEBUG(3,("reduce_name: denied: file path name %s is a symlink\n",resolved_name));
 979                         TALLOC_FREE(smb_fname);
 980                         return NT_STATUS_ACCESS_DENIED;
 981                 }
 982                 TALLOC_FREE(smb_fname);
 983         }
 984 #endif
 985
 986         DEBUG(3,("reduce_name: %s reduced to %s\n", fname, resolved_name));
 987         if (free_resolved_name) {
 988                 SAFE_FREE(resolved_name);
 989         }
 990         return NT_STATUS_OK;
 991 }
 992
 993 /**
 994  * XXX: This is temporary and there should be no callers of this once
 995  * smb_filename is plumbed through all path based operations.
 996  */
 997 int vfs_stat_smb_fname(struct connection_struct *conn, const char *fname,
 998                        SMB_STRUCT_STAT *psbuf)
 999 {
1000         struct smb_filename *smb_fname = NULL;
1001         NTSTATUS status;
1002         int ret;
1003
1004         status = create_synthetic_smb_fname_split(talloc_tos(), fname, NULL,
1005                                                   &smb_fname);
1006         if (!NT_STATUS_IS_OK(status)) {
1007                 errno = map_errno_from_nt_status(status);
1008                 return -1;
1009         }
1010
1011         if (lp_posix_pathnames()) {
1012                 ret = SMB_VFS_LSTAT(conn, smb_fname);
1013         } else {
1014                 ret = SMB_VFS_STAT(conn, smb_fname);
1015         }
1016
1017         if (ret != -1) {
1018                 *psbuf = smb_fname->st;
1019         }
1020
1021         TALLOC_FREE(smb_fname);
1022         return ret;
1023 }
1024
1025 /**
1026  * XXX: This is temporary and there should be no callers of this once
1027  * smb_filename is plumbed through all path based operations.
1028  */
1029 int vfs_lstat_smb_fname(struct connection_struct *conn, const char *fname,
1030                         SMB_STRUCT_STAT *psbuf)
1031 {
1032         struct smb_filename *smb_fname = NULL;
1033         NTSTATUS status;
1034         int ret;
1035
1036         status = create_synthetic_smb_fname_split(talloc_tos(), fname, NULL,
1037                                                   &smb_fname);
1038         if (!NT_STATUS_IS_OK(status)) {
1039                 errno = map_errno_from_nt_status(status);
1040                 return -1;
1041         }
1042
1043         ret = SMB_VFS_LSTAT(conn, smb_fname);
1044         if (ret != -1) {
1045                 *psbuf = smb_fname->st;
1046         }
1047
1048         TALLOC_FREE(smb_fname);
1049         return ret;
1050 }
1051
1052 /*
1053   generate a file_id from a stat structure
1054  */
1055 struct file_id vfs_file_id_from_sbuf(connection_struct *conn, const SMB_STRUCT_STAT *sbuf)
1056 {
1057         return SMB_VFS_FILE_ID_CREATE(conn, sbuf);
1058 }
1059
1060 int smb_vfs_call_connect(struct vfs_handle_struct *handle,
1061                          const char *service, const char *user)
1062 {
1063         VFS_FIND(connect_fn);
1064         return handle->fns->connect_fn(handle, service, user);
1065 }
1066
1067 void smb_vfs_call_disconnect(struct vfs_handle_struct *handle)
1068 {
1069         VFS_FIND(disconnect);
1070         handle->fns->disconnect(handle);
1071 }
1072
1073 uint64_t smb_vfs_call_disk_free(struct vfs_handle_struct *handle,
1074                                 const char *path, bool small_query,
1075                                 uint64_t *bsize, uint64_t *dfree,
1076                                 uint64_t *dsize)
1077 {
1078         VFS_FIND(disk_free);
1079         return handle->fns->disk_free(handle, path, small_query, bsize, dfree,
1080                                       dsize);
1081 }
1082
1083 int smb_vfs_call_get_quota(struct vfs_handle_struct *handle,
1084                            enum SMB_QUOTA_TYPE qtype, unid_t id,
1085                            SMB_DISK_QUOTA *qt)
1086 {
1087         VFS_FIND(get_quota);
1088         return handle->fns->get_quota(handle, qtype, id, qt);
1089 }
1090
1091 int smb_vfs_call_set_quota(struct vfs_handle_struct *handle,
1092                            enum SMB_QUOTA_TYPE qtype, unid_t id,
1093                            SMB_DISK_QUOTA *qt)
1094 {
1095         VFS_FIND(set_quota);
1096         return handle->fns->set_quota(handle, qtype, id, qt);
1097 }
1098
1099 int smb_vfs_call_get_shadow_copy_data(struct vfs_handle_struct *handle,
1100                                       struct files_struct *fsp,
1101                                       SHADOW_COPY_DATA *shadow_copy_data,
1102                                       bool labels)
1103 {
1104         VFS_FIND(get_shadow_copy_data);
1105         return handle->fns->get_shadow_copy_data(handle, fsp, shadow_copy_data,
1106                                                  labels);
1107 }
1108 int smb_vfs_call_statvfs(struct vfs_handle_struct *handle, const char *path,
1109                          struct vfs_statvfs_struct *statbuf)
1110 {
1111         VFS_FIND(statvfs);
1112         return handle->fns->statvfs(handle, path, statbuf);
1113 }
1114
1115 uint32_t smb_vfs_call_fs_capabilities(struct vfs_handle_struct *handle,
1116                         enum timestamp_set_resolution *p_ts_res)
1117 {
1118         VFS_FIND(fs_capabilities);
1119         return handle->fns->fs_capabilities(handle, p_ts_res);
1120 }
1121
1122 SMB_STRUCT_DIR *smb_vfs_call_opendir(struct vfs_handle_struct *handle,
1123                                      const char *fname, const char *mask,
1124                                      uint32 attributes)
1125 {
1126         VFS_FIND(opendir);
1127         return handle->fns->opendir(handle, fname, mask, attributes);
1128 }
1129
1130 SMB_STRUCT_DIRENT *smb_vfs_call_readdir(struct vfs_handle_struct *handle,
1131                                               SMB_STRUCT_DIR *dirp,
1132                                               SMB_STRUCT_STAT *sbuf)
1133 {
1134         VFS_FIND(readdir);
1135         return handle->fns->readdir(handle, dirp, sbuf);
1136 }
1137
1138 void smb_vfs_call_seekdir(struct vfs_handle_struct *handle,
1139                           SMB_STRUCT_DIR *dirp, long offset)
1140 {
1141         VFS_FIND(seekdir);
1142         handle->fns->seekdir(handle, dirp, offset);
1143 }
1144
1145 long smb_vfs_call_telldir(struct vfs_handle_struct *handle,
1146                           SMB_STRUCT_DIR *dirp)
1147 {
1148         VFS_FIND(telldir);
1149         return handle->fns->telldir(handle, dirp);
1150 }
1151
1152 void smb_vfs_call_rewind_dir(struct vfs_handle_struct *handle,
1153                              SMB_STRUCT_DIR *dirp)
1154 {
1155         VFS_FIND(rewind_dir);
1156         handle->fns->rewind_dir(handle, dirp);
1157 }
1158
1159 int smb_vfs_call_mkdir(struct vfs_handle_struct *handle, const char *path,
1160                        mode_t mode)
1161 {
1162         VFS_FIND(mkdir);
1163         return handle->fns->mkdir(handle, path, mode);
1164 }
1165
1166 int smb_vfs_call_rmdir(struct vfs_handle_struct *handle, const char *path)
1167 {
1168         VFS_FIND(rmdir);
1169         return handle->fns->rmdir(handle, path);
1170 }
1171
1172 int smb_vfs_call_closedir(struct vfs_handle_struct *handle,
1173                           SMB_STRUCT_DIR *dir)
1174 {
1175         VFS_FIND(closedir);
1176         return handle->fns->closedir(handle, dir);
1177 }
1178
1179 void smb_vfs_call_init_search_op(struct vfs_handle_struct *handle,
1180                                  SMB_STRUCT_DIR *dirp)
1181 {
1182         VFS_FIND(init_search_op);
1183         handle->fns->init_search_op(handle, dirp);
1184 }
1185
1186 int smb_vfs_call_open(struct vfs_handle_struct *handle,
1187                       struct smb_filename *smb_fname, struct files_struct *fsp,
1188                       int flags, mode_t mode)
1189 {
1190         VFS_FIND(open);
1191         return handle->fns->open(handle, smb_fname, fsp, flags, mode);
1192 }
1193
1194 NTSTATUS smb_vfs_call_create_file(struct vfs_handle_struct *handle,
1195                                   struct smb_request *req,
1196                                   uint16_t root_dir_fid,
1197                                   struct smb_filename *smb_fname,
1198                                   uint32_t access_mask,
1199                                   uint32_t share_access,
1200                                   uint32_t create_disposition,
1201                                   uint32_t create_options,
1202                                   uint32_t file_attributes,
1203                                   uint32_t oplock_request,
1204                                   uint64_t allocation_size,
1205                                   struct security_descriptor *sd,
1206                                   struct ea_list *ea_list,
1207                                   files_struct **result,
1208                                   int *pinfo)
1209 {
1210         VFS_FIND(create_file);
1211         return handle->fns->create_file(
1212                 handle, req, root_dir_fid, smb_fname, access_mask,
1213                 share_access, create_disposition, create_options,
1214                 file_attributes, oplock_request, allocation_size, sd, ea_list,
1215                 result, pinfo);
1216 }
1217
1218 int smb_vfs_call_close_fn(struct vfs_handle_struct *handle,
1219                           struct files_struct *fsp)
1220 {
1221         VFS_FIND(close_fn);
1222         return handle->fns->close_fn(handle, fsp);
1223 }
1224
1225 ssize_t smb_vfs_call_vfs_read(struct vfs_handle_struct *handle,
1226                               struct files_struct *fsp, void *data, size_t n)
1227 {
1228         VFS_FIND(vfs_read);
1229         return handle->fns->vfs_read(handle, fsp, data, n);
1230 }
1231
1232 ssize_t smb_vfs_call_pread(struct vfs_handle_struct *handle,
1233                            struct files_struct *fsp, void *data, size_t n,
1234                            SMB_OFF_T offset)
1235 {
1236         VFS_FIND(pread);
1237         return handle->fns->pread(handle, fsp, data, n, offset);
1238 }
1239
1240 ssize_t smb_vfs_call_write(struct vfs_handle_struct *handle,
1241                            struct files_struct *fsp, const void *data,
1242                            size_t n)
1243 {
1244         VFS_FIND(write);
1245         return handle->fns->write(handle, fsp, data, n);
1246 }
1247
1248 ssize_t smb_vfs_call_pwrite(struct vfs_handle_struct *handle,
1249                             struct files_struct *fsp, const void *data,
1250                             size_t n, SMB_OFF_T offset)
1251 {
1252         VFS_FIND(pwrite);
1253         return handle->fns->pwrite(handle, fsp, data, n, offset);
1254 }
1255
1256 SMB_OFF_T smb_vfs_call_lseek(struct vfs_handle_struct *handle,
1257                              struct files_struct *fsp, SMB_OFF_T offset,
1258                              int whence)
1259 {
1260         VFS_FIND(lseek);
1261         return handle->fns->lseek(handle, fsp, offset, whence);
1262 }
1263
1264 ssize_t smb_vfs_call_sendfile(struct vfs_handle_struct *handle, int tofd,
1265                               files_struct *fromfsp, const DATA_BLOB *header,
1266                               SMB_OFF_T offset, size_t count)
1267 {
1268         VFS_FIND(sendfile);
1269         return handle->fns->sendfile(handle, tofd, fromfsp, header, offset,
1270                                      count);
1271 }
1272
1273 ssize_t smb_vfs_call_recvfile(struct vfs_handle_struct *handle, int fromfd,
1274                               files_struct *tofsp, SMB_OFF_T offset,
1275                               size_t count)
1276 {
1277         VFS_FIND(recvfile);
1278         return handle->fns->recvfile(handle, fromfd, tofsp, offset, count);
1279 }
1280
1281 int smb_vfs_call_rename(struct vfs_handle_struct *handle,
1282                         const struct smb_filename *smb_fname_src,
1283                         const struct smb_filename *smb_fname_dst)
1284 {
1285         VFS_FIND(rename);
1286         return handle->fns->rename(handle, smb_fname_src, smb_fname_dst);
1287 }
1288
1289 int smb_vfs_call_fsync(struct vfs_handle_struct *handle,
1290                        struct files_struct *fsp)
1291 {
1292         VFS_FIND(fsync);
1293         return handle->fns->fsync(handle, fsp);
1294 }
1295
1296 int smb_vfs_call_stat(struct vfs_handle_struct *handle,
1297                       struct smb_filename *smb_fname)
1298 {
1299         VFS_FIND(stat);
1300         return handle->fns->stat(handle, smb_fname);
1301 }
1302
1303 int smb_vfs_call_fstat(struct vfs_handle_struct *handle,
1304                        struct files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1305 {
1306         VFS_FIND(fstat);
1307         return handle->fns->fstat(handle, fsp, sbuf);
1308 }
1309
1310 int smb_vfs_call_lstat(struct vfs_handle_struct *handle,
1311                        struct smb_filename *smb_filename)
1312 {
1313         VFS_FIND(lstat);
1314         return handle->fns->lstat(handle, smb_filename);
1315 }
1316
1317 uint64_t smb_vfs_call_get_alloc_size(struct vfs_handle_struct *handle,
1318                                      struct files_struct *fsp,
1319                                      const SMB_STRUCT_STAT *sbuf)
1320 {
1321         VFS_FIND(get_alloc_size);
1322         return handle->fns->get_alloc_size(handle, fsp, sbuf);
1323 }
1324
1325 int smb_vfs_call_unlink(struct vfs_handle_struct *handle,
1326                         const struct smb_filename *smb_fname)
1327 {
1328         VFS_FIND(unlink);
1329         return handle->fns->unlink(handle, smb_fname);
1330 }
1331
1332 int smb_vfs_call_chmod(struct vfs_handle_struct *handle, const char *path,
1333                        mode_t mode)
1334 {
1335         VFS_FIND(chmod);
1336         return handle->fns->chmod(handle, path, mode);
1337 }
1338
1339 int smb_vfs_call_fchmod(struct vfs_handle_struct *handle,
1340                         struct files_struct *fsp, mode_t mode)
1341 {
1342         VFS_FIND(fchmod);
1343         return handle->fns->fchmod(handle, fsp, mode);
1344 }
1345
1346 int smb_vfs_call_chown(struct vfs_handle_struct *handle, const char *path,
1347                        uid_t uid, gid_t gid)
1348 {
1349         VFS_FIND(chown);
1350         return handle->fns->chown(handle, path, uid, gid);
1351 }
1352
1353 int smb_vfs_call_fchown(struct vfs_handle_struct *handle,
1354                         struct files_struct *fsp, uid_t uid, gid_t gid)
1355 {
1356         VFS_FIND(fchown);
1357         return handle->fns->fchown(handle, fsp, uid, gid);
1358 }
1359
1360 int smb_vfs_call_lchown(struct vfs_handle_struct *handle, const char *path,
1361                         uid_t uid, gid_t gid)
1362 {
1363         VFS_FIND(lchown);
1364         return handle->fns->lchown(handle, path, uid, gid);
1365 }
1366
1367 int smb_vfs_call_chdir(struct vfs_handle_struct *handle, const char *path)
1368 {
1369         VFS_FIND(chdir);
1370         return handle->fns->chdir(handle, path);
1371 }
1372
1373 char *smb_vfs_call_getwd(struct vfs_handle_struct *handle, char *buf)
1374 {
1375         VFS_FIND(getwd);
1376         return handle->fns->getwd(handle, buf);
1377 }
1378
1379 int smb_vfs_call_ntimes(struct vfs_handle_struct *handle,
1380                         const struct smb_filename *smb_fname,
1381                         struct smb_file_time *ft)
1382 {
1383         VFS_FIND(ntimes);
1384         return handle->fns->ntimes(handle, smb_fname, ft);
1385 }
1386
1387 int smb_vfs_call_ftruncate(struct vfs_handle_struct *handle,
1388                            struct files_struct *fsp, SMB_OFF_T offset)
1389 {
1390         VFS_FIND(ftruncate);
1391         return handle->fns->ftruncate(handle, fsp, offset);
1392 }
1393
1394 int smb_vfs_call_kernel_flock(struct vfs_handle_struct *handle,
1395                               struct files_struct *fsp, uint32 share_mode)
1396 {
1397         VFS_FIND(kernel_flock);
1398         return handle->fns->kernel_flock(handle, fsp, share_mode);
1399 }
1400
1401 int smb_vfs_call_linux_setlease(struct vfs_handle_struct *handle,
1402                                 struct files_struct *fsp, int leasetype)
1403 {
1404         VFS_FIND(linux_setlease);
1405         return handle->fns->linux_setlease(handle, fsp, leasetype);
1406 }
1407
1408 int smb_vfs_call_symlink(struct vfs_handle_struct *handle, const char *oldpath,
1409                          const char *newpath)
1410 {
1411         VFS_FIND(symlink);
1412         return handle->fns->symlink(handle, oldpath, newpath);
1413 }
1414
1415 int smb_vfs_call_vfs_readlink(struct vfs_handle_struct *handle,
1416                               const char *path, char *buf, size_t bufsiz)
1417 {
1418         VFS_FIND(vfs_readlink);
1419         return handle->fns->vfs_readlink(handle, path, buf, bufsiz);
1420 }
1421
1422 int smb_vfs_call_link(struct vfs_handle_struct *handle, const char *oldpath,
1423                       const char *newpath)
1424 {
1425         VFS_FIND(link);
1426         return handle->fns->link(handle, oldpath, newpath);
1427 }
1428
1429 int smb_vfs_call_mknod(struct vfs_handle_struct *handle, const char *path,
1430                        mode_t mode, SMB_DEV_T dev)
1431 {
1432         VFS_FIND(mknod);
1433         return handle->fns->mknod(handle, path, mode, dev);
1434 }
1435
1436 char *smb_vfs_call_realpath(struct vfs_handle_struct *handle,
1437                             const char *path, char *resolved_path)
1438 {
1439         VFS_FIND(realpath);
1440         return handle->fns->realpath(handle, path, resolved_path);
1441 }
1442
1443 NTSTATUS smb_vfs_call_notify_watch(struct vfs_handle_struct *handle,
1444                                    struct sys_notify_context *ctx,
1445                                    struct notify_entry *e,
1446                                    void (*callback)(struct sys_notify_context *ctx,
1447                                                     void *private_data,
1448                                                     struct notify_event *ev),
1449                                    void *private_data, void *handle_p)
1450 {
1451         VFS_FIND(notify_watch);
1452         return handle->fns->notify_watch(handle, ctx, e, callback,
1453                                          private_data, handle_p);
1454 }
1455
1456 int smb_vfs_call_chflags(struct vfs_handle_struct *handle, const char *path,
1457                          unsigned int flags)
1458 {
1459         VFS_FIND(chflags);
1460         return handle->fns->chflags(handle, path, flags);
1461 }
1462
1463 struct file_id smb_vfs_call_file_id_create(struct vfs_handle_struct *handle,
1464                                            const SMB_STRUCT_STAT *sbuf)
1465 {
1466         VFS_FIND(file_id_create);
1467         return handle->fns->file_id_create(handle, sbuf);
1468 }
1469
1470 NTSTATUS smb_vfs_call_streaminfo(struct vfs_handle_struct *handle,
1471                                  struct files_struct *fsp,
1472                                  const char *fname,
1473                                  TALLOC_CTX *mem_ctx,
1474                                  unsigned int *num_streams,
1475                                  struct stream_struct **streams)
1476 {
1477         VFS_FIND(streaminfo);
1478         return handle->fns->streaminfo(handle, fsp, fname, mem_ctx,
1479                                        num_streams, streams);
1480 }
1481
1482 int smb_vfs_call_get_real_filename(struct vfs_handle_struct *handle,
1483                                    const char *path, const char *name,
1484                                    TALLOC_CTX *mem_ctx, char **found_name)
1485 {
1486         VFS_FIND(get_real_filename);
1487         return handle->fns->get_real_filename(handle, path, name, mem_ctx,
1488                                               found_name);
1489 }
1490
1491 const char *smb_vfs_call_connectpath(struct vfs_handle_struct *handle,
1492                                      const char *filename)
1493 {
1494         VFS_FIND(connectpath);
1495         return handle->fns->connectpath(handle, filename);
1496 }
1497
1498 bool smb_vfs_call_strict_lock(struct vfs_handle_struct *handle,
1499                               struct files_struct *fsp,
1500                               struct lock_struct *plock)
1501 {
1502         VFS_FIND(strict_lock);
1503         return handle->fns->strict_lock(handle, fsp, plock);
1504 }
1505
1506 void smb_vfs_call_strict_unlock(struct vfs_handle_struct *handle,
1507                                 struct files_struct *fsp,
1508                                 struct lock_struct *plock)
1509 {
1510         VFS_FIND(strict_unlock);
1511         handle->fns->strict_unlock(handle, fsp, plock);
1512 }
1513
1514 NTSTATUS smb_vfs_call_translate_name(struct vfs_handle_struct *handle,
1515                                      char **mapped_name,
1516                                      enum vfs_translate_direction direction)
1517 {
1518         VFS_FIND(translate_name);
1519         return handle->fns->translate_name(handle, mapped_name, direction);
1520 }
1521
1522 NTSTATUS smb_vfs_call_fget_nt_acl(struct vfs_handle_struct *handle,
1523                                   struct files_struct *fsp,
1524                                   uint32 security_info,
1525                                   struct security_descriptor **ppdesc)
1526 {
1527         VFS_FIND(fget_nt_acl);
1528         return handle->fns->fget_nt_acl(handle, fsp, security_info,
1529                                         ppdesc);
1530 }
1531
1532 NTSTATUS smb_vfs_call_get_nt_acl(struct vfs_handle_struct *handle,
1533                                  const char *name,
1534                                  uint32 security_info,
1535                                  struct security_descriptor **ppdesc)
1536 {
1537         VFS_FIND(get_nt_acl);
1538         return handle->fns->get_nt_acl(handle, name, security_info, ppdesc);
1539 }
1540
1541 NTSTATUS smb_vfs_call_fset_nt_acl(struct vfs_handle_struct *handle,
1542                                   struct files_struct *fsp,
1543                                   uint32 security_info_sent,
1544                                   const struct security_descriptor *psd)
1545 {
1546         VFS_FIND(fset_nt_acl);
1547         return handle->fns->fset_nt_acl(handle, fsp, security_info_sent, psd);
1548 }
1549
1550 int smb_vfs_call_chmod_acl(struct vfs_handle_struct *handle, const char *name,
1551                            mode_t mode)
1552 {
1553         VFS_FIND(chmod_acl);
1554         return handle->fns->chmod_acl(handle, name, mode);
1555 }
1556
1557 int smb_vfs_call_fchmod_acl(struct vfs_handle_struct *handle,
1558                             struct files_struct *fsp, mode_t mode)
1559 {
1560         VFS_FIND(fchmod_acl);
1561         return handle->fns->fchmod_acl(handle, fsp, mode);
1562 }
1563
1564 int smb_vfs_call_sys_acl_get_entry(struct vfs_handle_struct *handle,
1565                                    SMB_ACL_T theacl, int entry_id,
1566                                    SMB_ACL_ENTRY_T *entry_p)
1567 {
1568         VFS_FIND(sys_acl_get_entry);
1569         return handle->fns->sys_acl_get_entry(handle, theacl, entry_id,
1570                                               entry_p);
1571 }
1572
1573 int smb_vfs_call_sys_acl_get_tag_type(struct vfs_handle_struct *handle,
1574                                       SMB_ACL_ENTRY_T entry_d,
1575                                       SMB_ACL_TAG_T *tag_type_p)
1576 {
1577         VFS_FIND(sys_acl_get_tag_type);
1578         return handle->fns->sys_acl_get_tag_type(handle, entry_d, tag_type_p);
1579 }
1580
1581 int smb_vfs_call_sys_acl_get_permset(struct vfs_handle_struct *handle,
1582                                      SMB_ACL_ENTRY_T entry_d,
1583                                      SMB_ACL_PERMSET_T *permset_p)
1584 {
1585         VFS_FIND(sys_acl_get_permset);
1586         return handle->fns->sys_acl_get_permset(handle, entry_d, permset_p);
1587 }
1588
1589 void * smb_vfs_call_sys_acl_get_qualifier(struct vfs_handle_struct *handle,
1590                                           SMB_ACL_ENTRY_T entry_d)
1591 {
1592         VFS_FIND(sys_acl_get_qualifier);
1593         return handle->fns->sys_acl_get_qualifier(handle, entry_d);
1594 }
1595
1596 SMB_ACL_T smb_vfs_call_sys_acl_get_file(struct vfs_handle_struct *handle,
1597                                         const char *path_p,
1598                                         SMB_ACL_TYPE_T type)
1599 {
1600         VFS_FIND(sys_acl_get_file);
1601         return handle->fns->sys_acl_get_file(handle, path_p, type);
1602 }
1603
1604 SMB_ACL_T smb_vfs_call_sys_acl_get_fd(struct vfs_handle_struct *handle,
1605                                       struct files_struct *fsp)
1606 {
1607         VFS_FIND(sys_acl_get_fd);
1608         return handle->fns->sys_acl_get_fd(handle, fsp);
1609 }
1610
1611 int smb_vfs_call_sys_acl_clear_perms(struct vfs_handle_struct *handle,
1612                                      SMB_ACL_PERMSET_T permset)
1613 {
1614         VFS_FIND(sys_acl_clear_perms);
1615         return handle->fns->sys_acl_clear_perms(handle, permset);
1616 }
1617
1618 int smb_vfs_call_sys_acl_add_perm(struct vfs_handle_struct *handle,
1619                                   SMB_ACL_PERMSET_T permset,
1620                                   SMB_ACL_PERM_T perm)
1621 {
1622         VFS_FIND(sys_acl_add_perm);
1623         return handle->fns->sys_acl_add_perm(handle, permset, perm);
1624 }
1625
1626 char * smb_vfs_call_sys_acl_to_text(struct vfs_handle_struct *handle,
1627                                     SMB_ACL_T theacl, ssize_t *plen)
1628 {
1629         VFS_FIND(sys_acl_to_text);
1630         return handle->fns->sys_acl_to_text(handle, theacl, plen);
1631 }
1632
1633 SMB_ACL_T smb_vfs_call_sys_acl_init(struct vfs_handle_struct *handle,
1634                                     int count)
1635 {
1636         VFS_FIND(sys_acl_init);
1637         return handle->fns->sys_acl_init(handle, count);
1638 }
1639
1640 int smb_vfs_call_sys_acl_create_entry(struct vfs_handle_struct *handle,
1641                                       SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry)
1642 {
1643         VFS_FIND(sys_acl_create_entry);
1644         return handle->fns->sys_acl_create_entry(handle, pacl, pentry);
1645 }
1646
1647 int smb_vfs_call_sys_acl_set_tag_type(struct vfs_handle_struct *handle,
1648                                       SMB_ACL_ENTRY_T entry,
1649                                       SMB_ACL_TAG_T tagtype)
1650 {
1651         VFS_FIND(sys_acl_set_tag_type);
1652         return handle->fns->sys_acl_set_tag_type(handle, entry, tagtype);
1653 }
1654
1655 int smb_vfs_call_sys_acl_set_qualifier(struct vfs_handle_struct *handle,
1656                                        SMB_ACL_ENTRY_T entry, void *qual)
1657 {
1658         VFS_FIND(sys_acl_set_qualifier);
1659         return handle->fns->sys_acl_set_qualifier(handle, entry, qual);
1660 }
1661
1662 int smb_vfs_call_sys_acl_set_permset(struct vfs_handle_struct *handle,
1663                                      SMB_ACL_ENTRY_T entry,
1664                                      SMB_ACL_PERMSET_T permset)
1665 {
1666         VFS_FIND(sys_acl_set_permset);
1667         return handle->fns->sys_acl_set_permset(handle, entry, permset);
1668 }
1669
1670 int smb_vfs_call_sys_acl_valid(struct vfs_handle_struct *handle,
1671                                SMB_ACL_T theacl)
1672 {
1673         VFS_FIND(sys_acl_valid);
1674         return handle->fns->sys_acl_valid(handle, theacl);
1675 }
1676
1677 int smb_vfs_call_sys_acl_set_file(struct vfs_handle_struct *handle,
1678                                   const char *name, SMB_ACL_TYPE_T acltype,
1679                                   SMB_ACL_T theacl)
1680 {
1681         VFS_FIND(sys_acl_set_file);
1682         return handle->fns->sys_acl_set_file(handle, name, acltype, theacl);
1683 }
1684
1685 int smb_vfs_call_sys_acl_set_fd(struct vfs_handle_struct *handle,
1686                                 struct files_struct *fsp, SMB_ACL_T theacl)
1687 {
1688         VFS_FIND(sys_acl_set_fd);
1689         return handle->fns->sys_acl_set_fd(handle, fsp, theacl);
1690 }
1691
1692 int smb_vfs_call_sys_acl_delete_def_file(struct vfs_handle_struct *handle,
1693                                          const char *path)
1694 {
1695         VFS_FIND(sys_acl_delete_def_file);
1696         return handle->fns->sys_acl_delete_def_file(handle, path);
1697 }
1698
1699 int smb_vfs_call_sys_acl_get_perm(struct vfs_handle_struct *handle,
1700                                   SMB_ACL_PERMSET_T permset,
1701                                   SMB_ACL_PERM_T perm)
1702 {
1703         VFS_FIND(sys_acl_get_perm);
1704         return handle->fns->sys_acl_get_perm(handle, permset, perm);
1705 }
1706
1707 int smb_vfs_call_sys_acl_free_text(struct vfs_handle_struct *handle,
1708                                    char *text)
1709 {
1710         VFS_FIND(sys_acl_free_text);
1711         return handle->fns->sys_acl_free_text(handle, text);
1712 }
1713
1714 int smb_vfs_call_sys_acl_free_acl(struct vfs_handle_struct *handle,
1715                                   SMB_ACL_T posix_acl)
1716 {
1717         VFS_FIND(sys_acl_free_acl);
1718         return handle->fns->sys_acl_free_acl(handle, posix_acl);
1719 }
1720
1721 int smb_vfs_call_sys_acl_free_qualifier(struct vfs_handle_struct *handle,
1722                                         void *qualifier, SMB_ACL_TAG_T tagtype)
1723 {
1724         VFS_FIND(sys_acl_free_qualifier);
1725         return handle->fns->sys_acl_free_qualifier(handle, qualifier, tagtype);
1726 }
1727
1728 ssize_t smb_vfs_call_getxattr(struct vfs_handle_struct *handle,
1729                               const char *path, const char *name, void *value,
1730                               size_t size)
1731 {
1732         VFS_FIND(getxattr);
1733         return handle->fns->getxattr(handle, path, name, value, size);
1734 }
1735
1736 ssize_t smb_vfs_call_lgetxattr(struct vfs_handle_struct *handle,
1737                                const char *path, const char *name, void *value,
1738                                size_t size)
1739 {
1740         VFS_FIND(lgetxattr);
1741         return handle->fns->lgetxattr(handle, path, name, value, size);
1742 }
1743
1744 ssize_t smb_vfs_call_fgetxattr(struct vfs_handle_struct *handle,
1745                                struct files_struct *fsp, const char *name,
1746                                void *value, size_t size)
1747 {
1748         VFS_FIND(fgetxattr);
1749         return handle->fns->fgetxattr(handle, fsp, name, value, size);
1750 }
1751
1752 ssize_t smb_vfs_call_listxattr(struct vfs_handle_struct *handle,
1753                                const char *path, char *list, size_t size)
1754 {
1755         VFS_FIND(listxattr);
1756         return handle->fns->listxattr(handle, path, list, size);
1757 }
1758
1759 ssize_t smb_vfs_call_llistxattr(struct vfs_handle_struct *handle,
1760                                 const char *path, char *list, size_t size)
1761 {
1762         VFS_FIND(llistxattr);
1763         return handle->fns->llistxattr(handle, path, list, size);
1764 }
1765
1766 ssize_t smb_vfs_call_flistxattr(struct vfs_handle_struct *handle,
1767                                 struct files_struct *fsp, char *list,
1768                                 size_t size)
1769 {
1770         VFS_FIND(flistxattr);
1771         return handle->fns->flistxattr(handle, fsp, list, size);
1772 }
1773
1774 int smb_vfs_call_removexattr(struct vfs_handle_struct *handle,
1775                              const char *path, const char *name)
1776 {
1777         VFS_FIND(removexattr);
1778         return handle->fns->removexattr(handle, path, name);
1779 }
1780
1781 int smb_vfs_call_lremovexattr(struct vfs_handle_struct *handle,
1782                               const char *path, const char *name)
1783 {
1784         VFS_FIND(lremovexattr);
1785         return handle->fns->lremovexattr(handle, path, name);
1786 }
1787
1788 int smb_vfs_call_fremovexattr(struct vfs_handle_struct *handle,
1789                               struct files_struct *fsp, const char *name)
1790 {
1791         VFS_FIND(fremovexattr);
1792         return handle->fns->fremovexattr(handle, fsp, name);
1793 }
1794
1795 int smb_vfs_call_setxattr(struct vfs_handle_struct *handle, const char *path,
1796                           const char *name, const void *value, size_t size,
1797                           int flags)
1798 {
1799         VFS_FIND(setxattr);
1800         return handle->fns->setxattr(handle, path, name, value, size, flags);
1801 }
1802
1803 int smb_vfs_call_lsetxattr(struct vfs_handle_struct *handle, const char *path,
1804                            const char *name, const void *value, size_t size,
1805                            int flags)
1806 {
1807         VFS_FIND(lsetxattr);
1808         return handle->fns->lsetxattr(handle, path, name, value, size, flags);
1809 }
1810
1811 int smb_vfs_call_fsetxattr(struct vfs_handle_struct *handle,
1812                            struct files_struct *fsp, const char *name,
1813                            const void *value, size_t size, int flags)
1814 {
1815         VFS_FIND(fsetxattr);
1816         return handle->fns->fsetxattr(handle, fsp, name, value, size, flags);
1817 }
1818
1819 int smb_vfs_call_aio_read(struct vfs_handle_struct *handle,
1820                           struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1821 {
1822         VFS_FIND(aio_read);
1823         return handle->fns->aio_read(handle, fsp, aiocb);
1824 }
1825
1826 int smb_vfs_call_aio_write(struct vfs_handle_struct *handle,
1827                            struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1828 {
1829         VFS_FIND(aio_write);
1830         return handle->fns->aio_write(handle, fsp, aiocb);
1831 }
1832
1833 ssize_t smb_vfs_call_aio_return_fn(struct vfs_handle_struct *handle,
1834                                    struct files_struct *fsp,
1835                                    SMB_STRUCT_AIOCB *aiocb)
1836 {
1837         VFS_FIND(aio_return_fn);
1838         return handle->fns->aio_return_fn(handle, fsp, aiocb);
1839 }
1840
1841 int smb_vfs_call_aio_cancel(struct vfs_handle_struct *handle,
1842                             struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1843 {
1844         VFS_FIND(aio_cancel);
1845         return handle->fns->aio_cancel(handle, fsp, aiocb);
1846 }
1847
1848 int smb_vfs_call_aio_error_fn(struct vfs_handle_struct *handle,
1849                               struct files_struct *fsp,
1850                               SMB_STRUCT_AIOCB *aiocb)
1851 {
1852         VFS_FIND(aio_error_fn);
1853         return handle->fns->aio_error_fn(handle, fsp, aiocb);
1854 }
1855
1856 int smb_vfs_call_aio_fsync(struct vfs_handle_struct *handle,
1857                            struct files_struct *fsp, int op,
1858                            SMB_STRUCT_AIOCB *aiocb)
1859 {
1860         VFS_FIND(aio_fsync);
1861         return handle->fns->aio_fsync(handle, fsp, op, aiocb);
1862 }
1863
1864 int smb_vfs_call_aio_suspend(struct vfs_handle_struct *handle,
1865                              struct files_struct *fsp,
1866                              const SMB_STRUCT_AIOCB * const aiocb[], int n,
1867                              const struct timespec *timeout)
1868 {
1869         VFS_FIND(aio_suspend);
1870         return handle->fns->aio_suspend(handle, fsp, aiocb, n, timeout);
1871 }
1872
1873 bool smb_vfs_call_aio_force(struct vfs_handle_struct *handle,
1874                             struct files_struct *fsp)
1875 {
1876         VFS_FIND(aio_force);
1877         return handle->fns->aio_force(handle, fsp);
1878 }
1879
1880 bool smb_vfs_call_is_offline(struct vfs_handle_struct *handle,
1881                              const char *path, SMB_STRUCT_STAT *sbuf)
1882 {
1883         VFS_FIND(is_offline);
1884         return handle->fns->is_offline(handle, path, sbuf);
1885 }
1886
1887 int smb_vfs_call_set_offline(struct vfs_handle_struct *handle,
1888                              const char *path)
1889 {
1890         VFS_FIND(set_offline);
1891         return handle->fns->set_offline(handle, path);
1892 }