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