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 "system/filesys.h"
  28 #include "smbd/smbd.h"
  29 #include "smbd/globals.h"
  30 #include "memcache.h"
  31 #include "transfer_file.h"
  32 #include "ntioctl.h"
  33
  34 #undef DBGC_CLASS
  35 #define DBGC_CLASS DBGC_VFS
  36
  37 static_decl_vfs;
  38
  39 struct vfs_init_function_entry {
  40         char *name;
  41         struct vfs_init_function_entry *prev, *next;
  42         const struct vfs_fn_pointers *fns;
  43 };
  44
  45 /****************************************************************************
  46     maintain the list of available backends
  47 ****************************************************************************/
  48
  49 static struct vfs_init_function_entry *vfs_find_backend_entry(const char *name)
  50 {
  51         struct vfs_init_function_entry *entry = backends;
  52
  53         DEBUG(10, ("vfs_find_backend_entry called for %s\n", name));
  54
  55         while(entry) {
  56                 if (strcmp(entry->name, name)==0) return entry;
  57                 entry = entry->next;
  58         }
  59
  60         return NULL;
  61 }
  62
  63 NTSTATUS smb_register_vfs(int version, const char *name,
  64                           const struct vfs_fn_pointers *fns)
  65 {
  66         struct vfs_init_function_entry *entry = backends;
  67
  68         if ((version != SMB_VFS_INTERFACE_VERSION)) {
  69                 DEBUG(0, ("Failed to register vfs module.\n"
  70                           "The module was compiled against SMB_VFS_INTERFACE_VERSION %d,\n"
  71                           "current SMB_VFS_INTERFACE_VERSION is %d.\n"
  72                           "Please recompile against the current Samba Version!\n",
  73                           version, SMB_VFS_INTERFACE_VERSION));
  74                 return NT_STATUS_OBJECT_TYPE_MISMATCH;
  75         }
  76
  77         if (!name || !name[0]) {
  78                 DEBUG(0,("smb_register_vfs() called with NULL pointer or empty name!\n"));
  79                 return NT_STATUS_INVALID_PARAMETER;
  80         }
  81
  82         if (vfs_find_backend_entry(name)) {
  83                 DEBUG(0,("VFS module %s already loaded!\n", name));
  84                 return NT_STATUS_OBJECT_NAME_COLLISION;
  85         }
  86
  87         entry = SMB_XMALLOC_P(struct vfs_init_function_entry);
  88         entry->name = smb_xstrdup(name);
  89         entry->fns = fns;
  90
  91         DLIST_ADD(backends, entry);
  92         DEBUG(5, ("Successfully added vfs backend '%s'\n", name));
  93         return NT_STATUS_OK;
  94 }
  95
  96 /****************************************************************************
  97   initialise default vfs hooks
  98 ****************************************************************************/
  99
 100 static void vfs_init_default(connection_struct *conn)
 101 {
 102         DEBUG(3, ("Initialising default vfs hooks\n"));
 103         vfs_init_custom(conn, DEFAULT_VFS_MODULE_NAME);
 104 }
 105
 106 /****************************************************************************
 107   initialise custom vfs hooks
 108  ****************************************************************************/
 109
 110 bool vfs_init_custom(connection_struct *conn, const char *vfs_object)
 111 {
 112         char *module_path = NULL;
 113         char *module_name = NULL;
 114         char *module_param = NULL, *p;
 115         vfs_handle_struct *handle;
 116         const struct vfs_init_function_entry *entry;
 117
 118         if (!conn||!vfs_object||!vfs_object[0]) {
 119                 DEBUG(0, ("vfs_init_custom() called with NULL pointer or "
 120                           "empty vfs_object!\n"));
 121                 return False;
 122         }
 123
 124         if(!backends) {
 125                 static_init_vfs;
 126         }
 127
 128         DEBUG(3, ("Initialising custom vfs hooks from [%s]\n", vfs_object));
 129
 130         module_path = smb_xstrdup(vfs_object);
 131
 132         p = strchr_m(module_path, ':');
 133
 134         if (p) {
 135                 *p = 0;
 136                 module_param = p+1;
 137                 trim_char(module_param, ' ', ' ');
 138         }
 139
 140         trim_char(module_path, ' ', ' ');
 141
 142         module_name = smb_xstrdup(module_path);
 143
 144         if ((module_name[0] == '/') &&
 145             (strcmp(module_path, DEFAULT_VFS_MODULE_NAME) != 0)) {
 146
 147                 /*
 148                  * Extract the module name from the path. Just use the base
 149                  * name of the last path component.
 150                  */
 151
 152                 SAFE_FREE(module_name);
 153                 module_name = smb_xstrdup(strrchr_m(module_path, '/')+1);
 154
 155                 p = strchr_m(module_name, '.');
 156
 157                 if (p != NULL) {
 158                         *p = '\0';
 159                 }
 160         }
 161
 162         /* First, try to load the module with the new module system */
 163         entry = vfs_find_backend_entry(module_name);
 164         if (!entry) {
 165                 NTSTATUS status;
 166
 167                 DEBUG(5, ("vfs module [%s] not loaded - trying to load...\n",
 168                           vfs_object));
 169
 170                 status = smb_probe_module("vfs", module_path);
 171                 if (!NT_STATUS_IS_OK(status)) {
 172                         DEBUG(0, ("error probing vfs module '%s': %s\n",
 173                                   module_path, nt_errstr(status)));
 174                         goto fail;
 175                 }
 176
 177                 entry = vfs_find_backend_entry(module_name);
 178                 if (!entry) {
 179                         DEBUG(0,("Can't find a vfs module [%s]\n",vfs_object));
 180                         goto fail;
 181                 }
 182         }
 183
 184         DEBUGADD(5,("Successfully loaded vfs module [%s] with the new modules system\n", vfs_object));
 185
 186         handle = talloc_zero(conn, vfs_handle_struct);
 187         if (!handle) {
 188                 DEBUG(0,("TALLOC_ZERO() failed!\n"));
 189                 goto fail;
 190         }
 191         handle->conn = conn;
 192         handle->fns = entry->fns;
 193         if (module_param) {
 194                 handle->param = talloc_strdup(conn, module_param);
 195         }
 196         DLIST_ADD(conn->vfs_handles, handle);
 197
 198         SAFE_FREE(module_path);
 199         SAFE_FREE(module_name);
 200         return True;
 201
 202  fail:
 203         SAFE_FREE(module_path);
 204         SAFE_FREE(module_name);
 205         return False;
 206 }
 207
 208 /*****************************************************************
 209  Allow VFS modules to extend files_struct with VFS-specific state.
 210  This will be ok for small numbers of extensions, but might need to
 211  be refactored if it becomes more widely used.
 212 ******************************************************************/
 213
 214 #define EXT_DATA_AREA(e) ((uint8 *)(e) + sizeof(struct vfs_fsp_data))
 215
 216 void *vfs_add_fsp_extension_notype(vfs_handle_struct *handle,
 217                                    files_struct *fsp, size_t ext_size,
 218                                    void (*destroy_fn)(void *p_data))
 219 {
 220         struct vfs_fsp_data *ext;
 221         void * ext_data;
 222
 223         /* Prevent VFS modules adding multiple extensions. */
 224         if ((ext_data = vfs_fetch_fsp_extension(handle, fsp))) {
 225                 return ext_data;
 226         }
 227
 228         ext = (struct vfs_fsp_data *)TALLOC_ZERO(
 229                 handle->conn, sizeof(struct vfs_fsp_data) + ext_size);
 230         if (ext == NULL) {
 231                 return NULL;
 232         }
 233
 234         ext->owner = handle;
 235         ext->next = fsp->vfs_extension;
 236         ext->destroy = destroy_fn;
 237         fsp->vfs_extension = ext;
 238         return EXT_DATA_AREA(ext);
 239 }
 240
 241 void vfs_remove_fsp_extension(vfs_handle_struct *handle, files_struct *fsp)
 242 {
 243         struct vfs_fsp_data *curr;
 244         struct vfs_fsp_data *prev;
 245
 246         for (curr = fsp->vfs_extension, prev = NULL;
 247              curr;
 248              prev = curr, curr = curr->next) {
 249                 if (curr->owner == handle) {
 250                     if (prev) {
 251                             prev->next = curr->next;
 252                     } else {
 253                             fsp->vfs_extension = curr->next;
 254                     }
 255                     if (curr->destroy) {
 256                             curr->destroy(EXT_DATA_AREA(curr));
 257                     }
 258                     TALLOC_FREE(curr);
 259                     return;
 260                 }
 261         }
 262 }
 263
 264 void *vfs_memctx_fsp_extension(vfs_handle_struct *handle, files_struct *fsp)
 265 {
 266         struct vfs_fsp_data *head;
 267
 268         for (head = fsp->vfs_extension; head; head = head->next) {
 269                 if (head->owner == handle) {
 270                         return head;
 271                 }
 272         }
 273
 274         return NULL;
 275 }
 276
 277 void *vfs_fetch_fsp_extension(vfs_handle_struct *handle, files_struct *fsp)
 278 {
 279         struct vfs_fsp_data *head;
 280
 281         head = (struct vfs_fsp_data *)vfs_memctx_fsp_extension(handle, fsp);
 282         if (head != NULL) {
 283                 return EXT_DATA_AREA(head);
 284         }
 285
 286         return NULL;
 287 }
 288
 289 #undef EXT_DATA_AREA
 290
 291 /*****************************************************************
 292  Generic VFS init.
 293 ******************************************************************/
 294
 295 bool smbd_vfs_init(connection_struct *conn)
 296 {
 297         const char **vfs_objects;
 298         unsigned int i = 0;
 299         int j = 0;
 300
 301         /* Normal share - initialise with disk access functions */
 302         vfs_init_default(conn);
 303         vfs_objects = lp_vfs_objects(SNUM(conn));
 304
 305         /* Override VFS functions if 'vfs object' was not specified*/
 306         if (!vfs_objects || !vfs_objects[0])
 307                 return True;
 308
 309         for (i=0; vfs_objects[i] ;) {
 310                 i++;
 311         }
 312
 313         for (j=i-1; j >= 0; j--) {
 314                 if (!vfs_init_custom(conn, vfs_objects[j])) {
 315                         DEBUG(0, ("smbd_vfs_init: vfs_init_custom failed for %s\n", vfs_objects[j]));
 316                         return False;
 317                 }
 318         }
 319         return True;
 320 }
 321
 322 /*******************************************************************
 323  Check if a file exists in the vfs.
 324 ********************************************************************/
 325
 326 NTSTATUS vfs_file_exist(connection_struct *conn, struct smb_filename *smb_fname)
 327 {
 328         /* Only return OK if stat was successful and S_ISREG */
 329         if ((SMB_VFS_STAT(conn, smb_fname) != -1) &&
 330             S_ISREG(smb_fname->st.st_ex_mode)) {
 331                 return NT_STATUS_OK;
 332         }
 333
 334         return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 335 }
 336
 337 /****************************************************************************
 338  Read data from fsp on the vfs. (note: EINTR re-read differs from vfs_write_data)
 339 ****************************************************************************/
 340
 341 ssize_t vfs_read_data(files_struct *fsp, char *buf, size_t byte_count)
 342 {
 343         size_t total=0;
 344
 345         while (total < byte_count)
 346         {
 347                 ssize_t ret = SMB_VFS_READ(fsp, buf + total,
 348                                            byte_count - total);
 349
 350                 if (ret == 0) return total;
 351                 if (ret == -1) {
 352                         if (errno == EINTR)
 353                                 continue;
 354                         else
 355                                 return -1;
 356                 }
 357                 total += ret;
 358         }
 359         return (ssize_t)total;
 360 }
 361
 362 ssize_t vfs_pread_data(files_struct *fsp, char *buf,
 363                 size_t byte_count, SMB_OFF_T offset)
 364 {
 365         size_t total=0;
 366
 367         while (total < byte_count)
 368         {
 369                 ssize_t ret = SMB_VFS_PREAD(fsp, buf + total,
 370                                         byte_count - total, offset + total);
 371
 372                 if (ret == 0) return total;
 373                 if (ret == -1) {
 374                         if (errno == EINTR)
 375                                 continue;
 376                         else
 377                                 return -1;
 378                 }
 379                 total += ret;
 380         }
 381         return (ssize_t)total;
 382 }
 383
 384 /****************************************************************************
 385  Write data to a fd on the vfs.
 386 ****************************************************************************/
 387
 388 ssize_t vfs_write_data(struct smb_request *req,
 389                         files_struct *fsp,
 390                         const char *buffer,
 391                         size_t N)
 392 {
 393         size_t total=0;
 394         ssize_t ret;
 395
 396         if (req && req->unread_bytes) {
 397                 SMB_ASSERT(req->unread_bytes == N);
 398                 /* VFS_RECVFILE must drain the socket
 399                  * before returning. */
 400                 req->unread_bytes = 0;
 401                 return SMB_VFS_RECVFILE(req->sconn->sock,
 402                                         fsp,
 403                                         (SMB_OFF_T)-1,
 404                                         N);
 405         }
 406
 407         while (total < N) {
 408                 ret = SMB_VFS_WRITE(fsp, buffer + total, N - total);
 409
 410                 if (ret == -1)
 411                         return -1;
 412                 if (ret == 0)
 413                         return total;
 414
 415                 total += ret;
 416         }
 417         return (ssize_t)total;
 418 }
 419
 420 ssize_t vfs_pwrite_data(struct smb_request *req,
 421                         files_struct *fsp,
 422                         const char *buffer,
 423                         size_t N,
 424                         SMB_OFF_T offset)
 425 {
 426         size_t total=0;
 427         ssize_t ret;
 428
 429         if (req && req->unread_bytes) {
 430                 SMB_ASSERT(req->unread_bytes == N);
 431                 /* VFS_RECVFILE must drain the socket
 432                  * before returning. */
 433                 req->unread_bytes = 0;
 434                 return SMB_VFS_RECVFILE(req->sconn->sock,
 435                                         fsp,
 436                                         offset,
 437                                         N);
 438         }
 439
 440         while (total < N) {
 441                 ret = SMB_VFS_PWRITE(fsp, buffer + total, N - total,
 442                                      offset + total);
 443
 444                 if (ret == -1)
 445                         return -1;
 446                 if (ret == 0)
 447                         return total;
 448
 449                 total += ret;
 450         }
 451         return (ssize_t)total;
 452 }
 453 /****************************************************************************
 454  An allocate file space call using the vfs interface.
 455  Allocates space for a file from a filedescriptor.
 456  Returns 0 on success, -1 on failure.
 457 ****************************************************************************/
 458
 459 int vfs_allocate_file_space(files_struct *fsp, uint64_t len)
 460 {
 461         int ret;
 462         connection_struct *conn = fsp->conn;
 463         uint64_t space_avail;
 464         uint64_t bsize,dfree,dsize;
 465         NTSTATUS status;
 466
 467         /*
 468          * Actually try and commit the space on disk....
 469          */
 470
 471         DEBUG(10,("vfs_allocate_file_space: file %s, len %.0f\n",
 472                   fsp_str_dbg(fsp), (double)len));
 473
 474         if (((SMB_OFF_T)len) < 0) {
 475                 DEBUG(0,("vfs_allocate_file_space: %s negative len "
 476                          "requested.\n", fsp_str_dbg(fsp)));
 477                 errno = EINVAL;
 478                 return -1;
 479         }
 480
 481         status = vfs_stat_fsp(fsp);
 482         if (!NT_STATUS_IS_OK(status)) {
 483                 return -1;
 484         }
 485
 486         if (len == (uint64_t)fsp->fsp_name->st.st_ex_size)
 487                 return 0;
 488
 489         if (len < (uint64_t)fsp->fsp_name->st.st_ex_size) {
 490                 /* Shrink - use ftruncate. */
 491
 492                 DEBUG(10,("vfs_allocate_file_space: file %s, shrink. Current "
 493                           "size %.0f\n", fsp_str_dbg(fsp),
 494                           (double)fsp->fsp_name->st.st_ex_size));
 495
 496                 contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_ALLOC_SHRINK);
 497
 498                 flush_write_cache(fsp, SIZECHANGE_FLUSH);
 499                 if ((ret = SMB_VFS_FTRUNCATE(fsp, (SMB_OFF_T)len)) != -1) {
 500                         set_filelen_write_cache(fsp, len);
 501                 }
 502
 503                 contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_ALLOC_SHRINK);
 504
 505                 return ret;
 506         }
 507
 508         if (!lp_strict_allocate(SNUM(fsp->conn)))
 509                 return 0;
 510
 511         /* Grow - we need to test if we have enough space. */
 512
 513         contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_ALLOC_GROW);
 514
 515         /* See if we have a syscall that will allocate beyond end-of-file
 516            without changing EOF. */
 517         ret = SMB_VFS_FALLOCATE(fsp, VFS_FALLOCATE_KEEP_SIZE, 0, len);
 518
 519         contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_ALLOC_GROW);
 520
 521         if (ret == 0) {
 522                 /* We changed the allocation size on disk, but not
 523                    EOF - exactly as required. We're done ! */
 524                 return 0;
 525         }
 526
 527         len -= fsp->fsp_name->st.st_ex_size;
 528         len /= 1024; /* Len is now number of 1k blocks needed. */
 529         space_avail = get_dfree_info(conn, fsp->fsp_name->base_name, false,
 530                                      &bsize, &dfree, &dsize);
 531         if (space_avail == (uint64_t)-1) {
 532                 return -1;
 533         }
 534
 535         DEBUG(10,("vfs_allocate_file_space: file %s, grow. Current size %.0f, "
 536                   "needed blocks = %.0f, space avail = %.0f\n",
 537                   fsp_str_dbg(fsp), (double)fsp->fsp_name->st.st_ex_size, (double)len,
 538                   (double)space_avail));
 539
 540         if (len > space_avail) {
 541                 errno = ENOSPC;
 542                 return -1;
 543         }
 544
 545         return 0;
 546 }
 547
 548 /****************************************************************************
 549  A vfs set_filelen call.
 550  set the length of a file from a filedescriptor.
 551  Returns 0 on success, -1 on failure.
 552 ****************************************************************************/
 553
 554 int vfs_set_filelen(files_struct *fsp, SMB_OFF_T len)
 555 {
 556         int ret;
 557
 558         contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_SET_FILE_LEN);
 559
 560         DEBUG(10,("vfs_set_filelen: ftruncate %s to len %.0f\n",
 561                   fsp_str_dbg(fsp), (double)len));
 562         flush_write_cache(fsp, SIZECHANGE_FLUSH);
 563         if ((ret = SMB_VFS_FTRUNCATE(fsp, len)) != -1) {
 564                 set_filelen_write_cache(fsp, len);
 565                 notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
 566                              FILE_NOTIFY_CHANGE_SIZE
 567                              | FILE_NOTIFY_CHANGE_ATTRIBUTES,
 568                              fsp->fsp_name->base_name);
 569         }
 570
 571         contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_SET_FILE_LEN);
 572
 573         return ret;
 574 }
 575
 576 /****************************************************************************
 577  A slow version of fallocate. Fallback code if SMB_VFS_FALLOCATE
 578  fails. Needs to be outside of the default version of SMB_VFS_FALLOCATE
 579  as this is also called from the default SMB_VFS_FTRUNCATE code.
 580  Always extends the file size.
 581  Returns 0 on success, errno on failure.
 582 ****************************************************************************/
 583
 584 #define SPARSE_BUF_WRITE_SIZE (32*1024)
 585
 586 int vfs_slow_fallocate(files_struct *fsp, SMB_OFF_T offset, SMB_OFF_T len)
 587 {
 588         ssize_t pwrite_ret;
 589         size_t total = 0;
 590
 591         if (!sparse_buf) {
 592                 sparse_buf = SMB_CALLOC_ARRAY(char, SPARSE_BUF_WRITE_SIZE);
 593                 if (!sparse_buf) {
 594                         errno = ENOMEM;
 595                         return ENOMEM;
 596                 }
 597         }
 598
 599         while (total < len) {
 600                 size_t curr_write_size = MIN(SPARSE_BUF_WRITE_SIZE, (len - total));
 601
 602                 pwrite_ret = SMB_VFS_PWRITE(fsp, sparse_buf, curr_write_size, offset + total);
 603                 if (pwrite_ret == -1) {
 604                         DEBUG(10,("vfs_slow_fallocate: SMB_VFS_PWRITE for file "
 605                                   "%s failed with error %s\n",
 606                                   fsp_str_dbg(fsp), strerror(errno)));
 607                         return errno;
 608                 }
 609                 total += pwrite_ret;
 610         }
 611
 612         return 0;
 613 }
 614
 615 /****************************************************************************
 616  A vfs fill sparse call.
 617  Writes zeros from the end of file to len, if len is greater than EOF.
 618  Used only by strict_sync.
 619  Returns 0 on success, -1 on failure.
 620 ****************************************************************************/
 621
 622 int vfs_fill_sparse(files_struct *fsp, SMB_OFF_T len)
 623 {
 624         int ret;
 625         NTSTATUS status;
 626         SMB_OFF_T offset;
 627         size_t num_to_write;
 628
 629         status = vfs_stat_fsp(fsp);
 630         if (!NT_STATUS_IS_OK(status)) {
 631                 return -1;
 632         }
 633
 634         if (len <= fsp->fsp_name->st.st_ex_size) {
 635                 return 0;
 636         }
 637
 638 #ifdef S_ISFIFO
 639         if (S_ISFIFO(fsp->fsp_name->st.st_ex_mode)) {
 640                 return 0;
 641         }
 642 #endif
 643
 644         DEBUG(10,("vfs_fill_sparse: write zeros in file %s from len %.0f to "
 645                   "len %.0f (%.0f bytes)\n", fsp_str_dbg(fsp),
 646                   (double)fsp->fsp_name->st.st_ex_size, (double)len,
 647                   (double)(len - fsp->fsp_name->st.st_ex_size)));
 648
 649         contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_FILL_SPARSE);
 650
 651         flush_write_cache(fsp, SIZECHANGE_FLUSH);
 652
 653         offset = fsp->fsp_name->st.st_ex_size;
 654         num_to_write = len - fsp->fsp_name->st.st_ex_size;
 655
 656         /* Only do this on non-stream file handles. */
 657         if (fsp->base_fsp == NULL) {
 658                 /* for allocation try fallocate first. This can fail on some
 659                  * platforms e.g. when the filesystem doesn't support it and no
 660                  * emulation is being done by the libc (like on AIX with JFS1). In that
 661                  * case we do our own emulation. fallocate implementations can
 662                  * return ENOTSUP or EINVAL in cases like that. */
 663                 ret = SMB_VFS_FALLOCATE(fsp, VFS_FALLOCATE_EXTEND_SIZE,
 664                                 offset, num_to_write);
 665                 if (ret == ENOSPC) {
 666                         errno = ENOSPC;
 667                         ret = -1;
 668                         goto out;
 669                 }
 670                 if (ret == 0) {
 671                         goto out;
 672                 }
 673                 DEBUG(10,("vfs_fill_sparse: SMB_VFS_FALLOCATE failed with "
 674                         "error %d. Falling back to slow manual allocation\n", ret));
 675         }
 676
 677         ret = vfs_slow_fallocate(fsp, offset, num_to_write);
 678         if (ret != 0) {
 679                 errno = ret;
 680                 ret = -1;
 681         }
 682
 683  out:
 684
 685         if (ret == 0) {
 686                 set_filelen_write_cache(fsp, len);
 687         }
 688
 689         contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_FILL_SPARSE);
 690         return ret;
 691 }
 692
 693 /****************************************************************************
 694  Transfer some data (n bytes) between two file_struct's.
 695 ****************************************************************************/
 696
 697 static ssize_t vfs_read_fn(void *file, void *buf, size_t len)
 698 {
 699         struct files_struct *fsp = (struct files_struct *)file;
 700
 701         return SMB_VFS_READ(fsp, buf, len);
 702 }
 703
 704 static ssize_t vfs_write_fn(void *file, const void *buf, size_t len)
 705 {
 706         struct files_struct *fsp = (struct files_struct *)file;
 707
 708         return SMB_VFS_WRITE(fsp, buf, len);
 709 }
 710
 711 SMB_OFF_T vfs_transfer_file(files_struct *in, files_struct *out, SMB_OFF_T n)
 712 {
 713         return transfer_file_internal((void *)in, (void *)out, n,
 714                                       vfs_read_fn, vfs_write_fn);
 715 }
 716
 717 /*******************************************************************
 718  A vfs_readdir wrapper which just returns the file name.
 719 ********************************************************************/
 720
 721 const char *vfs_readdirname(connection_struct *conn, void *p,
 722                             SMB_STRUCT_STAT *sbuf, char **talloced)
 723 {
 724         SMB_STRUCT_DIRENT *ptr= NULL;
 725         const char *dname;
 726         char *translated;
 727         NTSTATUS status;
 728
 729         if (!p)
 730                 return(NULL);
 731
 732         ptr = SMB_VFS_READDIR(conn, (SMB_STRUCT_DIR *)p, sbuf);
 733         if (!ptr)
 734                 return(NULL);
 735
 736         dname = ptr->d_name;
 737
 738
 739 #ifdef NEXT2
 740         if (telldir(p) < 0)
 741                 return(NULL);
 742 #endif
 743
 744 #ifdef HAVE_BROKEN_READDIR_NAME
 745         /* using /usr/ucb/cc is BAD */
 746         dname = dname - 2;
 747 #endif
 748
 749         status = SMB_VFS_TRANSLATE_NAME(conn, dname, vfs_translate_to_windows,
 750                                         talloc_tos(), &translated);
 751         if (NT_STATUS_EQUAL(status, NT_STATUS_NONE_MAPPED)) {
 752                 *talloced = NULL;
 753                 return dname;
 754         }
 755         *talloced = translated;
 756         if (!NT_STATUS_IS_OK(status)) {
 757                 return NULL;
 758         }
 759         return translated;
 760 }
 761
 762 /*******************************************************************
 763  A wrapper for vfs_chdir().
 764 ********************************************************************/
 765
 766 int vfs_ChDir(connection_struct *conn, const char *path)
 767 {
 768         int res;
 769
 770         if (!LastDir) {
 771                 LastDir = SMB_STRDUP("");
 772         }
 773
 774         if (strcsequal(path,"."))
 775                 return(0);
 776
 777         if (*path == '/' && strcsequal(LastDir,path))
 778                 return(0);
 779
 780         DEBUG(4,("vfs_ChDir to %s\n",path));
 781
 782         res = SMB_VFS_CHDIR(conn,path);
 783         if (!res) {
 784                 SAFE_FREE(LastDir);
 785                 LastDir = SMB_STRDUP(path);
 786         }
 787         return(res);
 788 }
 789
 790 /*******************************************************************
 791  Return the absolute current directory path - given a UNIX pathname.
 792  Note that this path is returned in DOS format, not UNIX
 793  format. Note this can be called with conn == NULL.
 794 ********************************************************************/
 795
 796 char *vfs_GetWd(TALLOC_CTX *ctx, connection_struct *conn)
 797 {
 798         char *current_dir = NULL;
 799         char *result = NULL;
 800         DATA_BLOB cache_value;
 801         struct file_id key;
 802         struct smb_filename *smb_fname_dot = NULL;
 803         struct smb_filename *smb_fname_full = NULL;
 804         NTSTATUS status;
 805
 806         if (!lp_getwd_cache()) {
 807                 goto nocache;
 808         }
 809
 810         status = create_synthetic_smb_fname(ctx, ".", NULL, NULL,
 811                                             &smb_fname_dot);
 812         if (!NT_STATUS_IS_OK(status)) {
 813                 errno = map_errno_from_nt_status(status);
 814                 goto out;
 815         }
 816
 817         if (SMB_VFS_STAT(conn, smb_fname_dot) == -1) {
 818                 /*
 819                  * Known to fail for root: the directory may be NFS-mounted
 820                  * and exported with root_squash (so has no root access).
 821                  */
 822                 DEBUG(1,("vfs_GetWd: couldn't stat \".\" error %s "
 823                          "(NFS problem ?)\n", strerror(errno) ));
 824                 goto nocache;
 825         }
 826
 827         key = vfs_file_id_from_sbuf(conn, &smb_fname_dot->st);
 828
 829         if (!memcache_lookup(smbd_memcache(), GETWD_CACHE,
 830                              data_blob_const(&key, sizeof(key)),
 831                              &cache_value)) {
 832                 goto nocache;
 833         }
 834
 835         SMB_ASSERT((cache_value.length > 0)
 836                    && (cache_value.data[cache_value.length-1] == '\0'));
 837
 838         status = create_synthetic_smb_fname(ctx, (char *)cache_value.data,
 839                                             NULL, NULL, &smb_fname_full);
 840         if (!NT_STATUS_IS_OK(status)) {
 841                 errno = map_errno_from_nt_status(status);
 842                 goto out;
 843         }
 844
 845         if ((SMB_VFS_STAT(conn, smb_fname_full) == 0) &&
 846             (smb_fname_dot->st.st_ex_dev == smb_fname_full->st.st_ex_dev) &&
 847             (smb_fname_dot->st.st_ex_ino == smb_fname_full->st.st_ex_ino) &&
 848             (S_ISDIR(smb_fname_dot->st.st_ex_mode))) {
 849                 /*
 850                  * Ok, we're done
 851                  */
 852                 result = talloc_strdup(ctx, smb_fname_full->base_name);
 853                 if (result == NULL) {
 854                         errno = ENOMEM;
 855                 }
 856                 goto out;
 857         }
 858
 859  nocache:
 860
 861         /*
 862          * We don't have the information to hand so rely on traditional
 863          * methods. The very slow getcwd, which spawns a process on some
 864          * systems, or the not quite so bad getwd.
 865          */
 866
 867         current_dir = SMB_VFS_GETWD(conn);
 868         if (current_dir == NULL) {
 869                 DEBUG(0, ("vfs_GetWd: SMB_VFS_GETWD call failed: %s\n",
 870                           strerror(errno)));
 871                 goto out;
 872         }
 873
 874         if (lp_getwd_cache() && VALID_STAT(smb_fname_dot->st)) {
 875                 key = vfs_file_id_from_sbuf(conn, &smb_fname_dot->st);
 876
 877                 memcache_add(smbd_memcache(), GETWD_CACHE,
 878                              data_blob_const(&key, sizeof(key)),
 879                              data_blob_const(current_dir,
 880                                                 strlen(current_dir)+1));
 881         }
 882
 883         result = talloc_strdup(ctx, current_dir);
 884         if (result == NULL) {
 885                 errno = ENOMEM;
 886         }
 887
 888  out:
 889         TALLOC_FREE(smb_fname_dot);
 890         TALLOC_FREE(smb_fname_full);
 891         SAFE_FREE(current_dir);
 892         return result;
 893 }
 894
 895 /*******************************************************************
 896  Reduce a file name, removing .. elements and checking that
 897  it is below dir in the heirachy. This uses realpath.
 898 ********************************************************************/
 899
 900 NTSTATUS check_reduced_name(connection_struct *conn, const char *fname)
 901 {
 902         char *resolved_name = NULL;
 903         bool allow_symlinks = true;
 904         bool allow_widelinks = false;
 905
 906         DEBUG(3,("check_reduced_name [%s] [%s]\n", fname, conn->connectpath));
 907
 908         resolved_name = SMB_VFS_REALPATH(conn,fname);
 909
 910         if (!resolved_name) {
 911                 switch (errno) {
 912                         case ENOTDIR:
 913                                 DEBUG(3,("check_reduced_name: Component not a "
 914                                          "directory in getting realpath for "
 915                                          "%s\n", fname));
 916                                 return NT_STATUS_OBJECT_PATH_NOT_FOUND;
 917                         case ENOENT:
 918                         {
 919                                 TALLOC_CTX *ctx = talloc_tos();
 920                                 char *dir_name = NULL;
 921                                 const char *last_component = NULL;
 922                                 char *new_name = NULL;
 923
 924                                 /* Last component didn't exist.
 925                                    Remove it and try and canonicalise
 926                                    the directory name. */
 927                                 if (!parent_dirname(ctx, fname,
 928                                                 &dir_name,
 929                                                 &last_component)) {
 930                                         return NT_STATUS_NO_MEMORY;
 931                                 }
 932
 933                                 resolved_name = SMB_VFS_REALPATH(conn,dir_name);
 934                                 if (!resolved_name) {
 935                                         NTSTATUS status = map_nt_error_from_unix(errno);
 936
 937                                         if (errno == ENOENT || errno == ENOTDIR) {
 938                                                 status = NT_STATUS_OBJECT_PATH_NOT_FOUND;
 939                                         }
 940
 941                                         DEBUG(3,("check_reduce_name: "
 942                                                  "couldn't get realpath for "
 943                                                  "%s (%s)\n",
 944                                                 fname,
 945                                                 nt_errstr(status)));
 946                                         return status;
 947                                 }
 948                                 new_name = talloc_asprintf(ctx,
 949                                                 "%s/%s",
 950                                                 resolved_name,
 951                                                 last_component);
 952                                 if (!new_name) {
 953                                         return NT_STATUS_NO_MEMORY;
 954                                 }
 955                                 SAFE_FREE(resolved_name);
 956                                 resolved_name = SMB_STRDUP(new_name);
 957                                 if (!resolved_name) {
 958                                         return NT_STATUS_NO_MEMORY;
 959                                 }
 960                                 break;
 961                         }
 962                         default:
 963                                 DEBUG(3,("check_reduced_name: couldn't get "
 964                                          "realpath for %s\n", fname));
 965                                 return map_nt_error_from_unix(errno);
 966                 }
 967         }
 968
 969         DEBUG(10,("check_reduced_name realpath [%s] -> [%s]\n", fname,
 970                   resolved_name));
 971
 972         if (*resolved_name != '/') {
 973                 DEBUG(0,("check_reduced_name: realpath doesn't return "
 974                          "absolute paths !\n"));
 975                 SAFE_FREE(resolved_name);
 976                 return NT_STATUS_OBJECT_NAME_INVALID;
 977         }
 978
 979         allow_widelinks = lp_widelinks(SNUM(conn));
 980         allow_symlinks = lp_symlinks(SNUM(conn));
 981
 982         /* Common widelinks and symlinks checks. */
 983         if (!allow_widelinks || !allow_symlinks) {
 984                 const char *conn_rootdir;
 985                 size_t rootdir_len;
 986
 987                 conn_rootdir = SMB_VFS_CONNECTPATH(conn, fname);
 988                 if (conn_rootdir == NULL) {
 989                         DEBUG(2, ("check_reduced_name: Could not get "
 990                                 "conn_rootdir\n"));
 991                         SAFE_FREE(resolved_name);
 992                         return NT_STATUS_ACCESS_DENIED;
 993                 }
 994
 995                 rootdir_len = strlen(conn_rootdir);
 996                 if (strncmp(conn_rootdir, resolved_name,
 997                                 rootdir_len) != 0) {
 998                         DEBUG(2, ("check_reduced_name: Bad access "
 999                                 "attempt: %s is a symlink outside the "
1000                                 "share path\n", fname));
1001                         DEBUGADD(2, ("conn_rootdir =%s\n", conn_rootdir));
1002                         DEBUGADD(2, ("resolved_name=%s\n", resolved_name));
1003                         SAFE_FREE(resolved_name);
1004                         return NT_STATUS_ACCESS_DENIED;
1005                 }
1006
1007                 /* Extra checks if all symlinks are disallowed. */
1008                 if (!allow_symlinks) {
1009                         /* fname can't have changed in resolved_path. */
1010                         const char *p = &resolved_name[rootdir_len];
1011
1012                         /* *p can be '\0' if fname was "." */
1013                         if (*p == '\0' && ISDOT(fname)) {
1014                                 goto out;
1015                         }
1016
1017                         if (*p != '/') {
1018                                 DEBUG(2, ("check_reduced_name: logic error (%c) "
1019                                         "in resolved_name: %s\n",
1020                                         *p,
1021                                         fname));
1022                                 SAFE_FREE(resolved_name);
1023                                 return NT_STATUS_ACCESS_DENIED;
1024                         }
1025
1026                         p++;
1027                         if (strcmp(fname, p)!=0) {
1028                                 DEBUG(2, ("check_reduced_name: Bad access "
1029                                         "attempt: %s is a symlink\n",
1030                                         fname));
1031                                 SAFE_FREE(resolved_name);
1032                                 return NT_STATUS_ACCESS_DENIED;
1033                         }
1034                 }
1035         }
1036
1037   out:
1038
1039         DEBUG(3,("check_reduced_name: %s reduced to %s\n", fname,
1040                  resolved_name));
1041         SAFE_FREE(resolved_name);
1042         return NT_STATUS_OK;
1043 }
1044
1045 /**
1046  * XXX: This is temporary and there should be no callers of this once
1047  * smb_filename is plumbed through all path based operations.
1048  */
1049 int vfs_stat_smb_fname(struct connection_struct *conn, const char *fname,
1050                        SMB_STRUCT_STAT *psbuf)
1051 {
1052         struct smb_filename *smb_fname = NULL;
1053         NTSTATUS status;
1054         int ret;
1055
1056         status = create_synthetic_smb_fname_split(talloc_tos(), fname, NULL,
1057                                                   &smb_fname);
1058         if (!NT_STATUS_IS_OK(status)) {
1059                 errno = map_errno_from_nt_status(status);
1060                 return -1;
1061         }
1062
1063         if (lp_posix_pathnames()) {
1064                 ret = SMB_VFS_LSTAT(conn, smb_fname);
1065         } else {
1066                 ret = SMB_VFS_STAT(conn, smb_fname);
1067         }
1068
1069         if (ret != -1) {
1070                 *psbuf = smb_fname->st;
1071         }
1072
1073         TALLOC_FREE(smb_fname);
1074         return ret;
1075 }
1076
1077 /**
1078  * XXX: This is temporary and there should be no callers of this once
1079  * smb_filename is plumbed through all path based operations.
1080  */
1081 int vfs_lstat_smb_fname(struct connection_struct *conn, const char *fname,
1082                         SMB_STRUCT_STAT *psbuf)
1083 {
1084         struct smb_filename *smb_fname = NULL;
1085         NTSTATUS status;
1086         int ret;
1087
1088         status = create_synthetic_smb_fname_split(talloc_tos(), fname, NULL,
1089                                                   &smb_fname);
1090         if (!NT_STATUS_IS_OK(status)) {
1091                 errno = map_errno_from_nt_status(status);
1092                 return -1;
1093         }
1094
1095         ret = SMB_VFS_LSTAT(conn, smb_fname);
1096         if (ret != -1) {
1097                 *psbuf = smb_fname->st;
1098         }
1099
1100         TALLOC_FREE(smb_fname);
1101         return ret;
1102 }
1103
1104 /**
1105  * Ensure LSTAT is called for POSIX paths.
1106  */
1107
1108 NTSTATUS vfs_stat_fsp(files_struct *fsp)
1109 {
1110         int ret;
1111
1112         if(fsp->fh->fd == -1) {
1113                 if (fsp->posix_open) {
1114                         ret = SMB_VFS_LSTAT(fsp->conn, fsp->fsp_name);
1115                 } else {
1116                         ret = SMB_VFS_STAT(fsp->conn, fsp->fsp_name);
1117                 }
1118                 if (ret == -1) {
1119                         return map_nt_error_from_unix(errno);
1120                 }
1121         } else {
1122                 if(SMB_VFS_FSTAT(fsp, &fsp->fsp_name->st) != 0) {
1123                         return map_nt_error_from_unix(errno);
1124                 }
1125         }
1126         return NT_STATUS_OK;
1127 }
1128
1129 /*
1130   generate a file_id from a stat structure
1131  */
1132 struct file_id vfs_file_id_from_sbuf(connection_struct *conn, const SMB_STRUCT_STAT *sbuf)
1133 {
1134         return SMB_VFS_FILE_ID_CREATE(conn, sbuf);
1135 }
1136
1137 int smb_vfs_call_connect(struct vfs_handle_struct *handle,
1138                          const char *service, const char *user)
1139 {
1140         VFS_FIND(connect_fn);
1141         return handle->fns->connect_fn(handle, service, user);
1142 }
1143
1144 void smb_vfs_call_disconnect(struct vfs_handle_struct *handle)
1145 {
1146         VFS_FIND(disconnect);
1147         handle->fns->disconnect(handle);
1148 }
1149
1150 uint64_t smb_vfs_call_disk_free(struct vfs_handle_struct *handle,
1151                                 const char *path, bool small_query,
1152                                 uint64_t *bsize, uint64_t *dfree,
1153                                 uint64_t *dsize)
1154 {
1155         VFS_FIND(disk_free);
1156         return handle->fns->disk_free(handle, path, small_query, bsize, dfree,
1157                                       dsize);
1158 }
1159
1160 int smb_vfs_call_get_quota(struct vfs_handle_struct *handle,
1161                            enum SMB_QUOTA_TYPE qtype, unid_t id,
1162                            SMB_DISK_QUOTA *qt)
1163 {
1164         VFS_FIND(get_quota);
1165         return handle->fns->get_quota(handle, qtype, id, qt);
1166 }
1167
1168 int smb_vfs_call_set_quota(struct vfs_handle_struct *handle,
1169                            enum SMB_QUOTA_TYPE qtype, unid_t id,
1170                            SMB_DISK_QUOTA *qt)
1171 {
1172         VFS_FIND(set_quota);
1173         return handle->fns->set_quota(handle, qtype, id, qt);
1174 }
1175
1176 int smb_vfs_call_get_shadow_copy_data(struct vfs_handle_struct *handle,
1177                                       struct files_struct *fsp,
1178                                       struct shadow_copy_data *shadow_copy_data,
1179                                       bool labels)
1180 {
1181         VFS_FIND(get_shadow_copy_data);
1182         return handle->fns->get_shadow_copy_data(handle, fsp, shadow_copy_data,
1183                                                  labels);
1184 }
1185 int smb_vfs_call_statvfs(struct vfs_handle_struct *handle, const char *path,
1186                          struct vfs_statvfs_struct *statbuf)
1187 {
1188         VFS_FIND(statvfs);
1189         return handle->fns->statvfs(handle, path, statbuf);
1190 }
1191
1192 uint32_t smb_vfs_call_fs_capabilities(struct vfs_handle_struct *handle,
1193                         enum timestamp_set_resolution *p_ts_res)
1194 {
1195         VFS_FIND(fs_capabilities);
1196         return handle->fns->fs_capabilities(handle, p_ts_res);
1197 }
1198
1199 NTSTATUS smb_vfs_call_get_dfs_referrals(struct vfs_handle_struct *handle,
1200                                         struct dfs_GetDFSReferral *r)
1201 {
1202         VFS_FIND(get_dfs_referrals);
1203         return handle->fns->get_dfs_referrals(handle, r);
1204 }
1205
1206 SMB_STRUCT_DIR *smb_vfs_call_opendir(struct vfs_handle_struct *handle,
1207                                      const char *fname, const char *mask,
1208                                      uint32 attributes)
1209 {
1210         VFS_FIND(opendir);
1211         return handle->fns->opendir(handle, fname, mask, attributes);
1212 }
1213
1214 SMB_STRUCT_DIR *smb_vfs_call_fdopendir(struct vfs_handle_struct *handle,
1215                                         struct files_struct *fsp,
1216                                         const char *mask,
1217                                         uint32 attributes)
1218 {
1219         VFS_FIND(fdopendir);
1220         return handle->fns->fdopendir(handle, fsp, mask, attributes);
1221 }
1222
1223 SMB_STRUCT_DIRENT *smb_vfs_call_readdir(struct vfs_handle_struct *handle,
1224                                               SMB_STRUCT_DIR *dirp,
1225                                               SMB_STRUCT_STAT *sbuf)
1226 {
1227         VFS_FIND(readdir);
1228         return handle->fns->readdir(handle, dirp, sbuf);
1229 }
1230
1231 void smb_vfs_call_seekdir(struct vfs_handle_struct *handle,
1232                           SMB_STRUCT_DIR *dirp, long offset)
1233 {
1234         VFS_FIND(seekdir);
1235         handle->fns->seekdir(handle, dirp, offset);
1236 }
1237
1238 long smb_vfs_call_telldir(struct vfs_handle_struct *handle,
1239                           SMB_STRUCT_DIR *dirp)
1240 {
1241         VFS_FIND(telldir);
1242         return handle->fns->telldir(handle, dirp);
1243 }
1244
1245 void smb_vfs_call_rewind_dir(struct vfs_handle_struct *handle,
1246                              SMB_STRUCT_DIR *dirp)
1247 {
1248         VFS_FIND(rewind_dir);
1249         handle->fns->rewind_dir(handle, dirp);
1250 }
1251
1252 int smb_vfs_call_mkdir(struct vfs_handle_struct *handle, const char *path,
1253                        mode_t mode)
1254 {
1255         VFS_FIND(mkdir);
1256         return handle->fns->mkdir(handle, path, mode);
1257 }
1258
1259 int smb_vfs_call_rmdir(struct vfs_handle_struct *handle, const char *path)
1260 {
1261         VFS_FIND(rmdir);
1262         return handle->fns->rmdir(handle, path);
1263 }
1264
1265 int smb_vfs_call_closedir(struct vfs_handle_struct *handle,
1266                           SMB_STRUCT_DIR *dir)
1267 {
1268         VFS_FIND(closedir);
1269         return handle->fns->closedir(handle, dir);
1270 }
1271
1272 void smb_vfs_call_init_search_op(struct vfs_handle_struct *handle,
1273                                  SMB_STRUCT_DIR *dirp)
1274 {
1275         VFS_FIND(init_search_op);
1276         handle->fns->init_search_op(handle, dirp);
1277 }
1278
1279 int smb_vfs_call_open(struct vfs_handle_struct *handle,
1280                       struct smb_filename *smb_fname, struct files_struct *fsp,
1281                       int flags, mode_t mode)
1282 {
1283         VFS_FIND(open_fn);
1284         return handle->fns->open_fn(handle, smb_fname, fsp, flags, mode);
1285 }
1286
1287 NTSTATUS smb_vfs_call_create_file(struct vfs_handle_struct *handle,
1288                                   struct smb_request *req,
1289                                   uint16_t root_dir_fid,
1290                                   struct smb_filename *smb_fname,
1291                                   uint32_t access_mask,
1292                                   uint32_t share_access,
1293                                   uint32_t create_disposition,
1294                                   uint32_t create_options,
1295                                   uint32_t file_attributes,
1296                                   uint32_t oplock_request,
1297                                   uint64_t allocation_size,
1298                                   uint32_t private_flags,
1299                                   struct security_descriptor *sd,
1300                                   struct ea_list *ea_list,
1301                                   files_struct **result,
1302                                   int *pinfo)
1303 {
1304         VFS_FIND(create_file);
1305         return handle->fns->create_file(
1306                 handle, req, root_dir_fid, smb_fname, access_mask,
1307                 share_access, create_disposition, create_options,
1308                 file_attributes, oplock_request, allocation_size,
1309                 private_flags, sd, ea_list,
1310                 result, pinfo);
1311 }
1312
1313 int smb_vfs_call_close_fn(struct vfs_handle_struct *handle,
1314                           struct files_struct *fsp)
1315 {
1316         VFS_FIND(close_fn);
1317         return handle->fns->close_fn(handle, fsp);
1318 }
1319
1320 ssize_t smb_vfs_call_vfs_read(struct vfs_handle_struct *handle,
1321                               struct files_struct *fsp, void *data, size_t n)
1322 {
1323         VFS_FIND(vfs_read);
1324         return handle->fns->vfs_read(handle, fsp, data, n);
1325 }
1326
1327 ssize_t smb_vfs_call_pread(struct vfs_handle_struct *handle,
1328                            struct files_struct *fsp, void *data, size_t n,
1329                            SMB_OFF_T offset)
1330 {
1331         VFS_FIND(pread);
1332         return handle->fns->pread(handle, fsp, data, n, offset);
1333 }
1334
1335 ssize_t smb_vfs_call_write(struct vfs_handle_struct *handle,
1336                            struct files_struct *fsp, const void *data,
1337                            size_t n)
1338 {
1339         VFS_FIND(write);
1340         return handle->fns->write(handle, fsp, data, n);
1341 }
1342
1343 ssize_t smb_vfs_call_pwrite(struct vfs_handle_struct *handle,
1344                             struct files_struct *fsp, const void *data,
1345                             size_t n, SMB_OFF_T offset)
1346 {
1347         VFS_FIND(pwrite);
1348         return handle->fns->pwrite(handle, fsp, data, n, offset);
1349 }
1350
1351 SMB_OFF_T smb_vfs_call_lseek(struct vfs_handle_struct *handle,
1352                              struct files_struct *fsp, SMB_OFF_T offset,
1353                              int whence)
1354 {
1355         VFS_FIND(lseek);
1356         return handle->fns->lseek(handle, fsp, offset, whence);
1357 }
1358
1359 ssize_t smb_vfs_call_sendfile(struct vfs_handle_struct *handle, int tofd,
1360                               files_struct *fromfsp, const DATA_BLOB *header,
1361                               SMB_OFF_T offset, size_t count)
1362 {
1363         VFS_FIND(sendfile);
1364         return handle->fns->sendfile(handle, tofd, fromfsp, header, offset,
1365                                      count);
1366 }
1367
1368 ssize_t smb_vfs_call_recvfile(struct vfs_handle_struct *handle, int fromfd,
1369                               files_struct *tofsp, SMB_OFF_T offset,
1370                               size_t count)
1371 {
1372         VFS_FIND(recvfile);
1373         return handle->fns->recvfile(handle, fromfd, tofsp, offset, count);
1374 }
1375
1376 int smb_vfs_call_rename(struct vfs_handle_struct *handle,
1377                         const struct smb_filename *smb_fname_src,
1378                         const struct smb_filename *smb_fname_dst)
1379 {
1380         VFS_FIND(rename);
1381         return handle->fns->rename(handle, smb_fname_src, smb_fname_dst);
1382 }
1383
1384 int smb_vfs_call_fsync(struct vfs_handle_struct *handle,
1385                        struct files_struct *fsp)
1386 {
1387         VFS_FIND(fsync);
1388         return handle->fns->fsync(handle, fsp);
1389 }
1390
1391 int smb_vfs_call_stat(struct vfs_handle_struct *handle,
1392                       struct smb_filename *smb_fname)
1393 {
1394         VFS_FIND(stat);
1395         return handle->fns->stat(handle, smb_fname);
1396 }
1397
1398 int smb_vfs_call_fstat(struct vfs_handle_struct *handle,
1399                        struct files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1400 {
1401         VFS_FIND(fstat);
1402         return handle->fns->fstat(handle, fsp, sbuf);
1403 }
1404
1405 int smb_vfs_call_lstat(struct vfs_handle_struct *handle,
1406                        struct smb_filename *smb_filename)
1407 {
1408         VFS_FIND(lstat);
1409         return handle->fns->lstat(handle, smb_filename);
1410 }
1411
1412 uint64_t smb_vfs_call_get_alloc_size(struct vfs_handle_struct *handle,
1413                                      struct files_struct *fsp,
1414                                      const SMB_STRUCT_STAT *sbuf)
1415 {
1416         VFS_FIND(get_alloc_size);
1417         return handle->fns->get_alloc_size(handle, fsp, sbuf);
1418 }
1419
1420 int smb_vfs_call_unlink(struct vfs_handle_struct *handle,
1421                         const struct smb_filename *smb_fname)
1422 {
1423         VFS_FIND(unlink);
1424         return handle->fns->unlink(handle, smb_fname);
1425 }
1426
1427 int smb_vfs_call_chmod(struct vfs_handle_struct *handle, const char *path,
1428                        mode_t mode)
1429 {
1430         VFS_FIND(chmod);
1431         return handle->fns->chmod(handle, path, mode);
1432 }
1433
1434 int smb_vfs_call_fchmod(struct vfs_handle_struct *handle,
1435                         struct files_struct *fsp, mode_t mode)
1436 {
1437         VFS_FIND(fchmod);
1438         return handle->fns->fchmod(handle, fsp, mode);
1439 }
1440
1441 int smb_vfs_call_chown(struct vfs_handle_struct *handle, const char *path,
1442                        uid_t uid, gid_t gid)
1443 {
1444         VFS_FIND(chown);
1445         return handle->fns->chown(handle, path, uid, gid);
1446 }
1447
1448 int smb_vfs_call_fchown(struct vfs_handle_struct *handle,
1449                         struct files_struct *fsp, uid_t uid, gid_t gid)
1450 {
1451         VFS_FIND(fchown);
1452         return handle->fns->fchown(handle, fsp, uid, gid);
1453 }
1454
1455 int smb_vfs_call_lchown(struct vfs_handle_struct *handle, const char *path,
1456                         uid_t uid, gid_t gid)
1457 {
1458         VFS_FIND(lchown);
1459         return handle->fns->lchown(handle, path, uid, gid);
1460 }
1461
1462 NTSTATUS vfs_chown_fsp(files_struct *fsp, uid_t uid, gid_t gid)
1463 {
1464         int ret;
1465         bool as_root = false;
1466         const char *path;
1467         char *saved_dir = NULL;
1468         char *parent_dir = NULL;
1469         NTSTATUS status;
1470
1471         if (fsp->fh->fd != -1) {
1472                 /* Try fchown. */
1473                 ret = SMB_VFS_FCHOWN(fsp, uid, gid);
1474                 if (ret == 0) {
1475                         return NT_STATUS_OK;
1476                 }
1477                 if (ret == -1 && errno != ENOSYS) {
1478                         return map_nt_error_from_unix(errno);
1479                 }
1480         }
1481
1482         as_root = (geteuid() == 0);
1483
1484         if (as_root) {
1485                 /*
1486                  * We are being asked to chown as root. Make
1487                  * sure we chdir() into the path to pin it,
1488                  * and always act using lchown to ensure we
1489                  * don't deref any symbolic links.
1490                  */
1491                 const char *final_component = NULL;
1492                 struct smb_filename local_fname;
1493
1494                 saved_dir = vfs_GetWd(talloc_tos(),fsp->conn);
1495                 if (!saved_dir) {
1496                         status = map_nt_error_from_unix(errno);
1497                         DEBUG(0,("vfs_chown_fsp: failed to get "
1498                                 "current working directory. Error was %s\n",
1499                                 strerror(errno)));
1500                         return status;
1501                 }
1502
1503                 if (!parent_dirname(talloc_tos(),
1504                                 fsp->fsp_name->base_name,
1505                                 &parent_dir,
1506                                 &final_component)) {
1507                         return NT_STATUS_NO_MEMORY;
1508                 }
1509
1510                 /* cd into the parent dir to pin it. */
1511                 ret = vfs_ChDir(fsp->conn, parent_dir);
1512                 if (ret == -1) {
1513                         return map_nt_error_from_unix(errno);
1514                 }
1515
1516                 ZERO_STRUCT(local_fname);
1517                 local_fname.base_name = discard_const_p(char, final_component);
1518
1519                 /* Must use lstat here. */
1520                 ret = SMB_VFS_LSTAT(fsp->conn, &local_fname);
1521                 if (ret == -1) {
1522                         status = map_nt_error_from_unix(errno);
1523                         goto out;
1524                 }
1525
1526                 /* Ensure it matches the fsp stat. */
1527                 if (!check_same_stat(&local_fname.st, &fsp->fsp_name->st)) {
1528                         status = NT_STATUS_ACCESS_DENIED;
1529                         goto out;
1530                 }
1531                 path = final_component;
1532         } else {
1533                 path = fsp->fsp_name->base_name;
1534         }
1535
1536         if (fsp->posix_open || as_root) {
1537                 ret = SMB_VFS_LCHOWN(fsp->conn,
1538                         path,
1539                         uid, gid);
1540         } else {
1541                 ret = SMB_VFS_CHOWN(fsp->conn,
1542                         path,
1543                         uid, gid);
1544         }
1545
1546         if (ret == 0) {
1547                 status = NT_STATUS_OK;
1548         } else {
1549                 status = map_nt_error_from_unix(errno);
1550         }
1551
1552   out:
1553
1554         if (as_root) {
1555                 vfs_ChDir(fsp->conn,saved_dir);
1556                 TALLOC_FREE(saved_dir);
1557                 TALLOC_FREE(parent_dir);
1558         }
1559         return status;
1560 }
1561
1562 int smb_vfs_call_chdir(struct vfs_handle_struct *handle, const char *path)
1563 {
1564         VFS_FIND(chdir);
1565         return handle->fns->chdir(handle, path);
1566 }
1567
1568 char *smb_vfs_call_getwd(struct vfs_handle_struct *handle)
1569 {
1570         VFS_FIND(getwd);
1571         return handle->fns->getwd(handle);
1572 }
1573
1574 int smb_vfs_call_ntimes(struct vfs_handle_struct *handle,
1575                         const struct smb_filename *smb_fname,
1576                         struct smb_file_time *ft)
1577 {
1578         VFS_FIND(ntimes);
1579         return handle->fns->ntimes(handle, smb_fname, ft);
1580 }
1581
1582 int smb_vfs_call_ftruncate(struct vfs_handle_struct *handle,
1583                            struct files_struct *fsp, SMB_OFF_T offset)
1584 {
1585         VFS_FIND(ftruncate);
1586         return handle->fns->ftruncate(handle, fsp, offset);
1587 }
1588
1589 int smb_vfs_call_fallocate(struct vfs_handle_struct *handle,
1590                                 struct files_struct *fsp,
1591                                 enum vfs_fallocate_mode mode,
1592                                 SMB_OFF_T offset,
1593                                 SMB_OFF_T len)
1594 {
1595         VFS_FIND(fallocate);
1596         return handle->fns->fallocate(handle, fsp, mode, offset, len);
1597 }
1598
1599 int smb_vfs_call_kernel_flock(struct vfs_handle_struct *handle,
1600                               struct files_struct *fsp, uint32 share_mode,
1601                               uint32_t access_mask)
1602 {
1603         VFS_FIND(kernel_flock);
1604         return handle->fns->kernel_flock(handle, fsp, share_mode,
1605                                          access_mask);
1606 }
1607
1608 int smb_vfs_call_linux_setlease(struct vfs_handle_struct *handle,
1609                                 struct files_struct *fsp, int leasetype)
1610 {
1611         VFS_FIND(linux_setlease);
1612         return handle->fns->linux_setlease(handle, fsp, leasetype);
1613 }
1614
1615 int smb_vfs_call_symlink(struct vfs_handle_struct *handle, const char *oldpath,
1616                          const char *newpath)
1617 {
1618         VFS_FIND(symlink);
1619         return handle->fns->symlink(handle, oldpath, newpath);
1620 }
1621
1622 int smb_vfs_call_vfs_readlink(struct vfs_handle_struct *handle,
1623                               const char *path, char *buf, size_t bufsiz)
1624 {
1625         VFS_FIND(vfs_readlink);
1626         return handle->fns->vfs_readlink(handle, path, buf, bufsiz);
1627 }
1628
1629 int smb_vfs_call_link(struct vfs_handle_struct *handle, const char *oldpath,
1630                       const char *newpath)
1631 {
1632         VFS_FIND(link);
1633         return handle->fns->link(handle, oldpath, newpath);
1634 }
1635
1636 int smb_vfs_call_mknod(struct vfs_handle_struct *handle, const char *path,
1637                        mode_t mode, SMB_DEV_T dev)
1638 {
1639         VFS_FIND(mknod);
1640         return handle->fns->mknod(handle, path, mode, dev);
1641 }
1642
1643 char *smb_vfs_call_realpath(struct vfs_handle_struct *handle, const char *path)
1644 {
1645         VFS_FIND(realpath);
1646         return handle->fns->realpath(handle, path);
1647 }
1648
1649 NTSTATUS smb_vfs_call_notify_watch(struct vfs_handle_struct *handle,
1650                                    struct sys_notify_context *ctx,
1651                                    struct notify_entry *e,
1652                                    void (*callback)(struct sys_notify_context *ctx,
1653                                                     void *private_data,
1654                                                     struct notify_event *ev),
1655                                    void *private_data, void *handle_p)
1656 {
1657         VFS_FIND(notify_watch);
1658         return handle->fns->notify_watch(handle, ctx, e, callback,
1659                                          private_data, handle_p);
1660 }
1661
1662 int smb_vfs_call_chflags(struct vfs_handle_struct *handle, const char *path,
1663                          unsigned int flags)
1664 {
1665         VFS_FIND(chflags);
1666         return handle->fns->chflags(handle, path, flags);
1667 }
1668
1669 struct file_id smb_vfs_call_file_id_create(struct vfs_handle_struct *handle,
1670                                            const SMB_STRUCT_STAT *sbuf)
1671 {
1672         VFS_FIND(file_id_create);
1673         return handle->fns->file_id_create(handle, sbuf);
1674 }
1675
1676 NTSTATUS smb_vfs_call_streaminfo(struct vfs_handle_struct *handle,
1677                                  struct files_struct *fsp,
1678                                  const char *fname,
1679                                  TALLOC_CTX *mem_ctx,
1680                                  unsigned int *num_streams,
1681                                  struct stream_struct **streams)
1682 {
1683         VFS_FIND(streaminfo);
1684         return handle->fns->streaminfo(handle, fsp, fname, mem_ctx,
1685                                        num_streams, streams);
1686 }
1687
1688 int smb_vfs_call_get_real_filename(struct vfs_handle_struct *handle,
1689                                    const char *path, const char *name,
1690                                    TALLOC_CTX *mem_ctx, char **found_name)
1691 {
1692         VFS_FIND(get_real_filename);
1693         return handle->fns->get_real_filename(handle, path, name, mem_ctx,
1694                                               found_name);
1695 }
1696
1697 const char *smb_vfs_call_connectpath(struct vfs_handle_struct *handle,
1698                                      const char *filename)
1699 {
1700         VFS_FIND(connectpath);
1701         return handle->fns->connectpath(handle, filename);
1702 }
1703
1704 bool smb_vfs_call_strict_lock(struct vfs_handle_struct *handle,
1705                               struct files_struct *fsp,
1706                               struct lock_struct *plock)
1707 {
1708         VFS_FIND(strict_lock);
1709         return handle->fns->strict_lock(handle, fsp, plock);
1710 }
1711
1712 void smb_vfs_call_strict_unlock(struct vfs_handle_struct *handle,
1713                                 struct files_struct *fsp,
1714                                 struct lock_struct *plock)
1715 {
1716         VFS_FIND(strict_unlock);
1717         handle->fns->strict_unlock(handle, fsp, plock);
1718 }
1719
1720 NTSTATUS smb_vfs_call_translate_name(struct vfs_handle_struct *handle,
1721                                      const char *name,
1722                                      enum vfs_translate_direction direction,
1723                                      TALLOC_CTX *mem_ctx,
1724                                      char **mapped_name)
1725 {
1726         VFS_FIND(translate_name);
1727         return handle->fns->translate_name(handle, name, direction, mem_ctx,
1728                                            mapped_name);
1729 }
1730
1731 NTSTATUS smb_vfs_call_fsctl(struct vfs_handle_struct *handle,
1732                             struct files_struct *fsp,
1733                             TALLOC_CTX *ctx,
1734                             uint32_t function,
1735                             uint16_t req_flags,
1736                             const uint8_t *in_data,
1737                             uint32_t in_len,
1738                             uint8_t **out_data,
1739                             uint32_t max_out_len,
1740                             uint32_t *out_len)
1741 {
1742         VFS_FIND(fsctl);
1743         return handle->fns->fsctl(handle, fsp, ctx, function, req_flags,
1744                                   in_data, in_len, out_data, max_out_len,
1745                                   out_len);
1746 }
1747
1748 NTSTATUS smb_vfs_call_fget_nt_acl(struct vfs_handle_struct *handle,
1749                                   struct files_struct *fsp,
1750                                   uint32 security_info,
1751                                   struct security_descriptor **ppdesc)
1752 {
1753         VFS_FIND(fget_nt_acl);
1754         return handle->fns->fget_nt_acl(handle, fsp, security_info,
1755                                         ppdesc);
1756 }
1757
1758 NTSTATUS smb_vfs_call_get_nt_acl(struct vfs_handle_struct *handle,
1759                                  const char *name,
1760                                  uint32 security_info,
1761                                  struct security_descriptor **ppdesc)
1762 {
1763         VFS_FIND(get_nt_acl);
1764         return handle->fns->get_nt_acl(handle, name, security_info, ppdesc);
1765 }
1766
1767 NTSTATUS smb_vfs_call_fset_nt_acl(struct vfs_handle_struct *handle,
1768                                   struct files_struct *fsp,
1769                                   uint32 security_info_sent,
1770                                   const struct security_descriptor *psd)
1771 {
1772         VFS_FIND(fset_nt_acl);
1773         return handle->fns->fset_nt_acl(handle, fsp, security_info_sent, psd);
1774 }
1775
1776 int smb_vfs_call_chmod_acl(struct vfs_handle_struct *handle, const char *name,
1777                            mode_t mode)
1778 {
1779         VFS_FIND(chmod_acl);
1780         return handle->fns->chmod_acl(handle, name, mode);
1781 }
1782
1783 int smb_vfs_call_fchmod_acl(struct vfs_handle_struct *handle,
1784                             struct files_struct *fsp, mode_t mode)
1785 {
1786         VFS_FIND(fchmod_acl);
1787         return handle->fns->fchmod_acl(handle, fsp, mode);
1788 }
1789
1790 int smb_vfs_call_sys_acl_get_entry(struct vfs_handle_struct *handle,
1791                                    SMB_ACL_T theacl, int entry_id,
1792                                    SMB_ACL_ENTRY_T *entry_p)
1793 {
1794         VFS_FIND(sys_acl_get_entry);
1795         return handle->fns->sys_acl_get_entry(handle, theacl, entry_id,
1796                                               entry_p);
1797 }
1798
1799 int smb_vfs_call_sys_acl_get_tag_type(struct vfs_handle_struct *handle,
1800                                       SMB_ACL_ENTRY_T entry_d,
1801                                       SMB_ACL_TAG_T *tag_type_p)
1802 {
1803         VFS_FIND(sys_acl_get_tag_type);
1804         return handle->fns->sys_acl_get_tag_type(handle, entry_d, tag_type_p);
1805 }
1806
1807 int smb_vfs_call_sys_acl_get_permset(struct vfs_handle_struct *handle,
1808                                      SMB_ACL_ENTRY_T entry_d,
1809                                      SMB_ACL_PERMSET_T *permset_p)
1810 {
1811         VFS_FIND(sys_acl_get_permset);
1812         return handle->fns->sys_acl_get_permset(handle, entry_d, permset_p);
1813 }
1814
1815 void * smb_vfs_call_sys_acl_get_qualifier(struct vfs_handle_struct *handle,
1816                                           SMB_ACL_ENTRY_T entry_d)
1817 {
1818         VFS_FIND(sys_acl_get_qualifier);
1819         return handle->fns->sys_acl_get_qualifier(handle, entry_d);
1820 }
1821
1822 SMB_ACL_T smb_vfs_call_sys_acl_get_file(struct vfs_handle_struct *handle,
1823                                         const char *path_p,
1824                                         SMB_ACL_TYPE_T type)
1825 {
1826         VFS_FIND(sys_acl_get_file);
1827         return handle->fns->sys_acl_get_file(handle, path_p, type);
1828 }
1829
1830 SMB_ACL_T smb_vfs_call_sys_acl_get_fd(struct vfs_handle_struct *handle,
1831                                       struct files_struct *fsp)
1832 {
1833         VFS_FIND(sys_acl_get_fd);
1834         return handle->fns->sys_acl_get_fd(handle, fsp);
1835 }
1836
1837 int smb_vfs_call_sys_acl_clear_perms(struct vfs_handle_struct *handle,
1838                                      SMB_ACL_PERMSET_T permset)
1839 {
1840         VFS_FIND(sys_acl_clear_perms);
1841         return handle->fns->sys_acl_clear_perms(handle, permset);
1842 }
1843
1844 int smb_vfs_call_sys_acl_add_perm(struct vfs_handle_struct *handle,
1845                                   SMB_ACL_PERMSET_T permset,
1846                                   SMB_ACL_PERM_T perm)
1847 {
1848         VFS_FIND(sys_acl_add_perm);
1849         return handle->fns->sys_acl_add_perm(handle, permset, perm);
1850 }
1851
1852 char * smb_vfs_call_sys_acl_to_text(struct vfs_handle_struct *handle,
1853                                     SMB_ACL_T theacl, ssize_t *plen)
1854 {
1855         VFS_FIND(sys_acl_to_text);
1856         return handle->fns->sys_acl_to_text(handle, theacl, plen);
1857 }
1858
1859 SMB_ACL_T smb_vfs_call_sys_acl_init(struct vfs_handle_struct *handle,
1860                                     int count)
1861 {
1862         VFS_FIND(sys_acl_init);
1863         return handle->fns->sys_acl_init(handle, count);
1864 }
1865
1866 int smb_vfs_call_sys_acl_create_entry(struct vfs_handle_struct *handle,
1867                                       SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry)
1868 {
1869         VFS_FIND(sys_acl_create_entry);
1870         return handle->fns->sys_acl_create_entry(handle, pacl, pentry);
1871 }
1872
1873 int smb_vfs_call_sys_acl_set_tag_type(struct vfs_handle_struct *handle,
1874                                       SMB_ACL_ENTRY_T entry,
1875                                       SMB_ACL_TAG_T tagtype)
1876 {
1877         VFS_FIND(sys_acl_set_tag_type);
1878         return handle->fns->sys_acl_set_tag_type(handle, entry, tagtype);
1879 }
1880
1881 int smb_vfs_call_sys_acl_set_qualifier(struct vfs_handle_struct *handle,
1882                                        SMB_ACL_ENTRY_T entry, void *qual)
1883 {
1884         VFS_FIND(sys_acl_set_qualifier);
1885         return handle->fns->sys_acl_set_qualifier(handle, entry, qual);
1886 }
1887
1888 int smb_vfs_call_sys_acl_set_permset(struct vfs_handle_struct *handle,
1889                                      SMB_ACL_ENTRY_T entry,
1890                                      SMB_ACL_PERMSET_T permset)
1891 {
1892         VFS_FIND(sys_acl_set_permset);
1893         return handle->fns->sys_acl_set_permset(handle, entry, permset);
1894 }
1895
1896 int smb_vfs_call_sys_acl_valid(struct vfs_handle_struct *handle,
1897                                SMB_ACL_T theacl)
1898 {
1899         VFS_FIND(sys_acl_valid);
1900         return handle->fns->sys_acl_valid(handle, theacl);
1901 }
1902
1903 int smb_vfs_call_sys_acl_set_file(struct vfs_handle_struct *handle,
1904                                   const char *name, SMB_ACL_TYPE_T acltype,
1905                                   SMB_ACL_T theacl)
1906 {
1907         VFS_FIND(sys_acl_set_file);
1908         return handle->fns->sys_acl_set_file(handle, name, acltype, theacl);
1909 }
1910
1911 int smb_vfs_call_sys_acl_set_fd(struct vfs_handle_struct *handle,
1912                                 struct files_struct *fsp, SMB_ACL_T theacl)
1913 {
1914         VFS_FIND(sys_acl_set_fd);
1915         return handle->fns->sys_acl_set_fd(handle, fsp, theacl);
1916 }
1917
1918 int smb_vfs_call_sys_acl_delete_def_file(struct vfs_handle_struct *handle,
1919                                          const char *path)
1920 {
1921         VFS_FIND(sys_acl_delete_def_file);
1922         return handle->fns->sys_acl_delete_def_file(handle, path);
1923 }
1924
1925 int smb_vfs_call_sys_acl_get_perm(struct vfs_handle_struct *handle,
1926                                   SMB_ACL_PERMSET_T permset,
1927                                   SMB_ACL_PERM_T perm)
1928 {
1929         VFS_FIND(sys_acl_get_perm);
1930         return handle->fns->sys_acl_get_perm(handle, permset, perm);
1931 }
1932
1933 int smb_vfs_call_sys_acl_free_text(struct vfs_handle_struct *handle,
1934                                    char *text)
1935 {
1936         VFS_FIND(sys_acl_free_text);
1937         return handle->fns->sys_acl_free_text(handle, text);
1938 }
1939
1940 int smb_vfs_call_sys_acl_free_acl(struct vfs_handle_struct *handle,
1941                                   SMB_ACL_T posix_acl)
1942 {
1943         VFS_FIND(sys_acl_free_acl);
1944         return handle->fns->sys_acl_free_acl(handle, posix_acl);
1945 }
1946
1947 int smb_vfs_call_sys_acl_free_qualifier(struct vfs_handle_struct *handle,
1948                                         void *qualifier, SMB_ACL_TAG_T tagtype)
1949 {
1950         VFS_FIND(sys_acl_free_qualifier);
1951         return handle->fns->sys_acl_free_qualifier(handle, qualifier, tagtype);
1952 }
1953
1954 ssize_t smb_vfs_call_getxattr(struct vfs_handle_struct *handle,
1955                               const char *path, const char *name, void *value,
1956                               size_t size)
1957 {
1958         VFS_FIND(getxattr);
1959         return handle->fns->getxattr(handle, path, name, value, size);
1960 }
1961
1962 ssize_t smb_vfs_call_lgetxattr(struct vfs_handle_struct *handle,
1963                                const char *path, const char *name, void *value,
1964                                size_t size)
1965 {
1966         VFS_FIND(lgetxattr);
1967         return handle->fns->lgetxattr(handle, path, name, value, size);
1968 }
1969
1970 ssize_t smb_vfs_call_fgetxattr(struct vfs_handle_struct *handle,
1971                                struct files_struct *fsp, const char *name,
1972                                void *value, size_t size)
1973 {
1974         VFS_FIND(fgetxattr);
1975         return handle->fns->fgetxattr(handle, fsp, name, value, size);
1976 }
1977
1978 ssize_t smb_vfs_call_listxattr(struct vfs_handle_struct *handle,
1979                                const char *path, char *list, size_t size)
1980 {
1981         VFS_FIND(listxattr);
1982         return handle->fns->listxattr(handle, path, list, size);
1983 }
1984
1985 ssize_t smb_vfs_call_llistxattr(struct vfs_handle_struct *handle,
1986                                 const char *path, char *list, size_t size)
1987 {
1988         VFS_FIND(llistxattr);
1989         return handle->fns->llistxattr(handle, path, list, size);
1990 }
1991
1992 ssize_t smb_vfs_call_flistxattr(struct vfs_handle_struct *handle,
1993                                 struct files_struct *fsp, char *list,
1994                                 size_t size)
1995 {
1996         VFS_FIND(flistxattr);
1997         return handle->fns->flistxattr(handle, fsp, list, size);
1998 }
1999
2000 int smb_vfs_call_removexattr(struct vfs_handle_struct *handle,
2001                              const char *path, const char *name)
2002 {
2003         VFS_FIND(removexattr);
2004         return handle->fns->removexattr(handle, path, name);
2005 }
2006
2007 int smb_vfs_call_lremovexattr(struct vfs_handle_struct *handle,
2008                               const char *path, const char *name)
2009 {
2010         VFS_FIND(lremovexattr);
2011         return handle->fns->lremovexattr(handle, path, name);
2012 }
2013
2014 int smb_vfs_call_fremovexattr(struct vfs_handle_struct *handle,
2015                               struct files_struct *fsp, const char *name)
2016 {
2017         VFS_FIND(fremovexattr);
2018         return handle->fns->fremovexattr(handle, fsp, name);
2019 }
2020
2021 int smb_vfs_call_setxattr(struct vfs_handle_struct *handle, const char *path,
2022                           const char *name, const void *value, size_t size,
2023                           int flags)
2024 {
2025         VFS_FIND(setxattr);
2026         return handle->fns->setxattr(handle, path, name, value, size, flags);
2027 }
2028
2029 int smb_vfs_call_lsetxattr(struct vfs_handle_struct *handle, const char *path,
2030                            const char *name, const void *value, size_t size,
2031                            int flags)
2032 {
2033         VFS_FIND(lsetxattr);
2034         return handle->fns->lsetxattr(handle, path, name, value, size, flags);
2035 }
2036
2037 int smb_vfs_call_fsetxattr(struct vfs_handle_struct *handle,
2038                            struct files_struct *fsp, const char *name,
2039                            const void *value, size_t size, int flags)
2040 {
2041         VFS_FIND(fsetxattr);
2042         return handle->fns->fsetxattr(handle, fsp, name, value, size, flags);
2043 }
2044
2045 int smb_vfs_call_aio_read(struct vfs_handle_struct *handle,
2046                           struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
2047 {
2048         VFS_FIND(aio_read);
2049         return handle->fns->aio_read(handle, fsp, aiocb);
2050 }
2051
2052 int smb_vfs_call_aio_write(struct vfs_handle_struct *handle,
2053                            struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
2054 {
2055         VFS_FIND(aio_write);
2056         return handle->fns->aio_write(handle, fsp, aiocb);
2057 }
2058
2059 ssize_t smb_vfs_call_aio_return_fn(struct vfs_handle_struct *handle,
2060                                    struct files_struct *fsp,
2061                                    SMB_STRUCT_AIOCB *aiocb)
2062 {
2063         VFS_FIND(aio_return_fn);
2064         return handle->fns->aio_return_fn(handle, fsp, aiocb);
2065 }
2066
2067 int smb_vfs_call_aio_cancel(struct vfs_handle_struct *handle,
2068                             struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
2069 {
2070         VFS_FIND(aio_cancel);
2071         return handle->fns->aio_cancel(handle, fsp, aiocb);
2072 }
2073
2074 int smb_vfs_call_aio_error_fn(struct vfs_handle_struct *handle,
2075                               struct files_struct *fsp,
2076                               SMB_STRUCT_AIOCB *aiocb)
2077 {
2078         VFS_FIND(aio_error_fn);
2079         return handle->fns->aio_error_fn(handle, fsp, aiocb);
2080 }
2081
2082 int smb_vfs_call_aio_fsync(struct vfs_handle_struct *handle,
2083                            struct files_struct *fsp, int op,
2084                            SMB_STRUCT_AIOCB *aiocb)
2085 {
2086         VFS_FIND(aio_fsync);
2087         return handle->fns->aio_fsync(handle, fsp, op, aiocb);
2088 }
2089
2090 int smb_vfs_call_aio_suspend(struct vfs_handle_struct *handle,
2091                              struct files_struct *fsp,
2092                              const SMB_STRUCT_AIOCB * const aiocb[], int n,
2093                              const struct timespec *timeout)
2094 {
2095         VFS_FIND(aio_suspend);
2096         return handle->fns->aio_suspend(handle, fsp, aiocb, n, timeout);
2097 }
2098
2099 bool smb_vfs_call_aio_force(struct vfs_handle_struct *handle,
2100                             struct files_struct *fsp)
2101 {
2102         VFS_FIND(aio_force);
2103         return handle->fns->aio_force(handle, fsp);
2104 }
2105
2106 bool smb_vfs_call_is_offline(struct vfs_handle_struct *handle,
2107                              const struct smb_filename *fname,
2108                              SMB_STRUCT_STAT *sbuf)
2109 {
2110         VFS_FIND(is_offline);
2111         return handle->fns->is_offline(handle, fname, sbuf);
2112 }
2113
2114 int smb_vfs_call_set_offline(struct vfs_handle_struct *handle,
2115                              const struct smb_filename *fname)
2116 {
2117         VFS_FIND(set_offline);
2118         return handle->fns->set_offline(handle, fname);
2119 }