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 "../lib/util/memcache.h"
  31 #include "transfer_file.h"
  32 #include "ntioctl.h"
  33 #include "lib/util/tevent_unix.h"
  34
  35 #undef DBGC_CLASS
  36 #define DBGC_CLASS DBGC_VFS
  37
  38 static_decl_vfs;
  39
  40 struct vfs_fsp_data {
  41     struct vfs_fsp_data *next;
  42     struct vfs_handle_struct *owner;
  43     void (*destroy)(void *p_data);
  44     void *_dummy_;
  45     /* NOTE: This structure contains four pointers so that we can guarantee
  46      * that the end of the structure is always both 4-byte and 8-byte aligned.
  47      */
  48 };
  49
  50 struct vfs_init_function_entry {
  51         char *name;
  52         struct vfs_init_function_entry *prev, *next;
  53         const struct vfs_fn_pointers *fns;
  54 };
  55
  56 /****************************************************************************
  57     maintain the list of available backends
  58 ****************************************************************************/
  59
  60 static struct vfs_init_function_entry *vfs_find_backend_entry(const char *name)
  61 {
  62         struct vfs_init_function_entry *entry = backends;
  63
  64         DEBUG(10, ("vfs_find_backend_entry called for %s\n", name));
  65
  66         while(entry) {
  67                 if (strcmp(entry->name, name)==0) return entry;
  68                 entry = entry->next;
  69         }
  70
  71         return NULL;
  72 }
  73
  74 NTSTATUS smb_register_vfs(int version, const char *name,
  75                           const struct vfs_fn_pointers *fns)
  76 {
  77         struct vfs_init_function_entry *entry = backends;
  78
  79         if ((version != SMB_VFS_INTERFACE_VERSION)) {
  80                 DEBUG(0, ("Failed to register vfs module.\n"
  81                           "The module was compiled against SMB_VFS_INTERFACE_VERSION %d,\n"
  82                           "current SMB_VFS_INTERFACE_VERSION is %d.\n"
  83                           "Please recompile against the current Samba Version!\n",
  84                           version, SMB_VFS_INTERFACE_VERSION));
  85                 return NT_STATUS_OBJECT_TYPE_MISMATCH;
  86         }
  87
  88         if (!name || !name[0]) {
  89                 DEBUG(0,("smb_register_vfs() called with NULL pointer or empty name!\n"));
  90                 return NT_STATUS_INVALID_PARAMETER;
  91         }
  92
  93         if (vfs_find_backend_entry(name)) {
  94                 DEBUG(0,("VFS module %s already loaded!\n", name));
  95                 return NT_STATUS_OBJECT_NAME_COLLISION;
  96         }
  97
  98         entry = SMB_XMALLOC_P(struct vfs_init_function_entry);
  99         entry->name = smb_xstrdup(name);
 100         entry->fns = fns;
 101
 102         DLIST_ADD(backends, entry);
 103         DEBUG(5, ("Successfully added vfs backend '%s'\n", name));
 104         return NT_STATUS_OK;
 105 }
 106
 107 /****************************************************************************
 108   initialise default vfs hooks
 109 ****************************************************************************/
 110
 111 static void vfs_init_default(connection_struct *conn)
 112 {
 113         DEBUG(3, ("Initialising default vfs hooks\n"));
 114         vfs_init_custom(conn, DEFAULT_VFS_MODULE_NAME);
 115 }
 116
 117 /****************************************************************************
 118   initialise custom vfs hooks
 119  ****************************************************************************/
 120
 121 bool vfs_init_custom(connection_struct *conn, const char *vfs_object)
 122 {
 123         char *module_path = NULL;
 124         char *module_name = NULL;
 125         char *module_param = NULL, *p;
 126         vfs_handle_struct *handle;
 127         const struct vfs_init_function_entry *entry;
 128
 129         if (!conn||!vfs_object||!vfs_object[0]) {
 130                 DEBUG(0, ("vfs_init_custom() called with NULL pointer or "
 131                           "empty vfs_object!\n"));
 132                 return False;
 133         }
 134
 135         if(!backends) {
 136                 static_init_vfs;
 137         }
 138
 139         DEBUG(3, ("Initialising custom vfs hooks from [%s]\n", vfs_object));
 140
 141         module_path = smb_xstrdup(vfs_object);
 142
 143         p = strchr_m(module_path, ':');
 144
 145         if (p) {
 146                 *p = 0;
 147                 module_param = p+1;
 148                 trim_char(module_param, ' ', ' ');
 149         }
 150
 151         trim_char(module_path, ' ', ' ');
 152
 153         module_name = smb_xstrdup(module_path);
 154
 155         if ((module_name[0] == '/') &&
 156             (strcmp(module_path, DEFAULT_VFS_MODULE_NAME) != 0)) {
 157
 158                 /*
 159                  * Extract the module name from the path. Just use the base
 160                  * name of the last path component.
 161                  */
 162
 163                 SAFE_FREE(module_name);
 164                 module_name = smb_xstrdup(strrchr_m(module_path, '/')+1);
 165
 166                 p = strchr_m(module_name, '.');
 167
 168                 if (p != NULL) {
 169                         *p = '\0';
 170                 }
 171         }
 172
 173         /* First, try to load the module with the new module system */
 174         entry = vfs_find_backend_entry(module_name);
 175         if (!entry) {
 176                 NTSTATUS status;
 177
 178                 DEBUG(5, ("vfs module [%s] not loaded - trying to load...\n",
 179                           vfs_object));
 180
 181                 status = smb_load_module("vfs", module_path);
 182                 if (!NT_STATUS_IS_OK(status)) {
 183                         DEBUG(0, ("error probing vfs module '%s': %s\n",
 184                                   module_path, nt_errstr(status)));
 185                         goto fail;
 186                 }
 187
 188                 entry = vfs_find_backend_entry(module_name);
 189                 if (!entry) {
 190                         DEBUG(0,("Can't find a vfs module [%s]\n",vfs_object));
 191                         goto fail;
 192                 }
 193         }
 194
 195         DEBUGADD(5,("Successfully loaded vfs module [%s] with the new modules system\n", vfs_object));
 196
 197         handle = talloc_zero(conn, vfs_handle_struct);
 198         if (!handle) {
 199                 DEBUG(0,("TALLOC_ZERO() failed!\n"));
 200                 goto fail;
 201         }
 202         handle->conn = conn;
 203         handle->fns = entry->fns;
 204         if (module_param) {
 205                 handle->param = talloc_strdup(conn, module_param);
 206         }
 207         DLIST_ADD(conn->vfs_handles, handle);
 208
 209         SAFE_FREE(module_path);
 210         SAFE_FREE(module_name);
 211         return True;
 212
 213  fail:
 214         SAFE_FREE(module_path);
 215         SAFE_FREE(module_name);
 216         return False;
 217 }
 218
 219 /*****************************************************************
 220  Allow VFS modules to extend files_struct with VFS-specific state.
 221  This will be ok for small numbers of extensions, but might need to
 222  be refactored if it becomes more widely used.
 223 ******************************************************************/
 224
 225 #define EXT_DATA_AREA(e) ((uint8_t *)(e) + sizeof(struct vfs_fsp_data))
 226
 227 void *vfs_add_fsp_extension_notype(vfs_handle_struct *handle,
 228                                    files_struct *fsp, size_t ext_size,
 229                                    void (*destroy_fn)(void *p_data))
 230 {
 231         struct vfs_fsp_data *ext;
 232         void * ext_data;
 233
 234         /* Prevent VFS modules adding multiple extensions. */
 235         if ((ext_data = vfs_fetch_fsp_extension(handle, fsp))) {
 236                 return ext_data;
 237         }
 238
 239         ext = (struct vfs_fsp_data *)TALLOC_ZERO(
 240                 handle->conn, sizeof(struct vfs_fsp_data) + ext_size);
 241         if (ext == NULL) {
 242                 return NULL;
 243         }
 244
 245         ext->owner = handle;
 246         ext->next = fsp->vfs_extension;
 247         ext->destroy = destroy_fn;
 248         fsp->vfs_extension = ext;
 249         return EXT_DATA_AREA(ext);
 250 }
 251
 252 void vfs_remove_fsp_extension(vfs_handle_struct *handle, files_struct *fsp)
 253 {
 254         struct vfs_fsp_data *curr;
 255         struct vfs_fsp_data *prev;
 256
 257         for (curr = fsp->vfs_extension, prev = NULL;
 258              curr;
 259              prev = curr, curr = curr->next) {
 260                 if (curr->owner == handle) {
 261                     if (prev) {
 262                             prev->next = curr->next;
 263                     } else {
 264                             fsp->vfs_extension = curr->next;
 265                     }
 266                     if (curr->destroy) {
 267                             curr->destroy(EXT_DATA_AREA(curr));
 268                     }
 269                     TALLOC_FREE(curr);
 270                     return;
 271                 }
 272         }
 273 }
 274
 275 void vfs_remove_all_fsp_extensions(files_struct *fsp)
 276 {
 277         struct vfs_fsp_data *curr;
 278         struct vfs_fsp_data *next;
 279
 280         for (curr = fsp->vfs_extension; curr; curr = next) {
 281
 282                 next = curr->next;
 283                 fsp->vfs_extension = next;
 284
 285                 if (curr->destroy) {
 286                         curr->destroy(EXT_DATA_AREA(curr));
 287                 }
 288                 TALLOC_FREE(curr);
 289         }
 290 }
 291
 292 void *vfs_memctx_fsp_extension(vfs_handle_struct *handle, files_struct *fsp)
 293 {
 294         struct vfs_fsp_data *head;
 295
 296         for (head = fsp->vfs_extension; head; head = head->next) {
 297                 if (head->owner == handle) {
 298                         return head;
 299                 }
 300         }
 301
 302         return NULL;
 303 }
 304
 305 void *vfs_fetch_fsp_extension(vfs_handle_struct *handle, files_struct *fsp)
 306 {
 307         struct vfs_fsp_data *head;
 308
 309         head = (struct vfs_fsp_data *)vfs_memctx_fsp_extension(handle, fsp);
 310         if (head != NULL) {
 311                 return EXT_DATA_AREA(head);
 312         }
 313
 314         return NULL;
 315 }
 316
 317 #undef EXT_DATA_AREA
 318
 319 /*****************************************************************
 320  Generic VFS init.
 321 ******************************************************************/
 322
 323 bool smbd_vfs_init(connection_struct *conn)
 324 {
 325         const char **vfs_objects;
 326         unsigned int i = 0;
 327         int j = 0;
 328
 329         /* Normal share - initialise with disk access functions */
 330         vfs_init_default(conn);
 331
 332         /* No need to load vfs modules for printer connections */
 333         if (conn->printer) {
 334                 return True;
 335         }
 336
 337         vfs_objects = lp_vfs_objects(SNUM(conn));
 338
 339         /* Override VFS functions if 'vfs object' was not specified*/
 340         if (!vfs_objects || !vfs_objects[0])
 341                 return True;
 342
 343         for (i=0; vfs_objects[i] ;) {
 344                 i++;
 345         }
 346
 347         for (j=i-1; j >= 0; j--) {
 348                 if (!vfs_init_custom(conn, vfs_objects[j])) {
 349                         DEBUG(0, ("smbd_vfs_init: vfs_init_custom failed for %s\n", vfs_objects[j]));
 350                         return False;
 351                 }
 352         }
 353         return True;
 354 }
 355
 356 /*******************************************************************
 357  Check if a file exists in the vfs.
 358 ********************************************************************/
 359
 360 NTSTATUS vfs_file_exist(connection_struct *conn, struct smb_filename *smb_fname)
 361 {
 362         /* Only return OK if stat was successful and S_ISREG */
 363         if ((SMB_VFS_STAT(conn, smb_fname) != -1) &&
 364             S_ISREG(smb_fname->st.st_ex_mode)) {
 365                 return NT_STATUS_OK;
 366         }
 367
 368         return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 369 }
 370
 371 /****************************************************************************
 372  Read data from fsp on the vfs. (note: EINTR re-read differs from vfs_write_data)
 373 ****************************************************************************/
 374
 375 ssize_t vfs_read_data(files_struct *fsp, char *buf, size_t byte_count)
 376 {
 377         size_t total=0;
 378
 379         while (total < byte_count)
 380         {
 381                 ssize_t ret = SMB_VFS_READ(fsp, buf + total,
 382                                            byte_count - total);
 383
 384                 if (ret == 0) return total;
 385                 if (ret == -1) {
 386                         if (errno == EINTR)
 387                                 continue;
 388                         else
 389                                 return -1;
 390                 }
 391                 total += ret;
 392         }
 393         return (ssize_t)total;
 394 }
 395
 396 /****************************************************************************
 397  Write data to a fd on the vfs.
 398 ****************************************************************************/
 399
 400 ssize_t vfs_write_data(struct smb_request *req,
 401                         files_struct *fsp,
 402                         const char *buffer,
 403                         size_t N)
 404 {
 405         size_t total=0;
 406         ssize_t ret;
 407
 408         if (req && req->unread_bytes) {
 409                 int sockfd = req->xconn->transport.sock;
 410                 int old_flags;
 411                 SMB_ASSERT(req->unread_bytes == N);
 412                 /* VFS_RECVFILE must drain the socket
 413                  * before returning. */
 414                 req->unread_bytes = 0;
 415                 /* Ensure the socket is blocking. */
 416                 old_flags = fcntl(sockfd, F_GETFL, 0);
 417                 if (set_blocking(sockfd, true) == -1) {
 418                         return (ssize_t)-1;
 419                 }
 420                 ret = SMB_VFS_RECVFILE(sockfd,
 421                                         fsp,
 422                                         (off_t)-1,
 423                                         N);
 424                 if (fcntl(sockfd, F_SETFL, old_flags) == -1) {
 425                         return (ssize_t)-1;
 426                 }
 427                 return ret;
 428         }
 429
 430         while (total < N) {
 431                 ret = SMB_VFS_WRITE(fsp, buffer + total, N - total);
 432
 433                 if (ret == -1)
 434                         return -1;
 435                 if (ret == 0)
 436                         return total;
 437
 438                 total += ret;
 439         }
 440         return (ssize_t)total;
 441 }
 442
 443 ssize_t vfs_pwrite_data(struct smb_request *req,
 444                         files_struct *fsp,
 445                         const char *buffer,
 446                         size_t N,
 447                         off_t offset)
 448 {
 449         size_t total=0;
 450         ssize_t ret;
 451
 452         if (req && req->unread_bytes) {
 453                 int sockfd = req->xconn->transport.sock;
 454                 SMB_ASSERT(req->unread_bytes == N);
 455                 /* VFS_RECVFILE must drain the socket
 456                  * before returning. */
 457                 req->unread_bytes = 0;
 458                 /*
 459                  * Leave the socket non-blocking and
 460                  * use SMB_VFS_RECVFILE. If it returns
 461                  * EAGAIN || EWOULDBLOCK temporarily set
 462                  * the socket blocking and retry
 463                  * the RECVFILE.
 464                  */
 465                 while (total < N) {
 466                         ret = SMB_VFS_RECVFILE(sockfd,
 467                                                 fsp,
 468                                                 offset + total,
 469                                                 N - total);
 470                         if (ret == 0 || (ret == -1 &&
 471                                          (errno == EAGAIN ||
 472                                           errno == EWOULDBLOCK))) {
 473                                 int old_flags;
 474                                 /* Ensure the socket is blocking. */
 475                                 old_flags = fcntl(sockfd, F_GETFL, 0);
 476                                 if (set_blocking(sockfd, true) == -1) {
 477                                         return (ssize_t)-1;
 478                                 }
 479                                 ret = SMB_VFS_RECVFILE(sockfd,
 480                                                         fsp,
 481                                                         offset + total,
 482                                                         N - total);
 483                                 if (fcntl(sockfd, F_SETFL, old_flags) == -1) {
 484                                         return (ssize_t)-1;
 485                                 }
 486                                 if (ret == -1) {
 487                                         return (ssize_t)-1;
 488                                 }
 489                                 total += ret;
 490                                 return (ssize_t)total;
 491                         }
 492                         /* Any other error case. */
 493                         if (ret == -1) {
 494                                 return ret;
 495                         }
 496                         total += ret;
 497                 }
 498                 return (ssize_t)total;
 499         }
 500
 501         while (total < N) {
 502                 ret = SMB_VFS_PWRITE(fsp, buffer + total, N - total,
 503                                      offset + total);
 504
 505                 if (ret == -1)
 506                         return -1;
 507                 if (ret == 0)
 508                         return total;
 509
 510                 total += ret;
 511         }
 512         return (ssize_t)total;
 513 }
 514 /****************************************************************************
 515  An allocate file space call using the vfs interface.
 516  Allocates space for a file from a filedescriptor.
 517  Returns 0 on success, -1 on failure.
 518 ****************************************************************************/
 519
 520 int vfs_allocate_file_space(files_struct *fsp, uint64_t len)
 521 {
 522         int ret;
 523         connection_struct *conn = fsp->conn;
 524         uint64_t space_avail;
 525         uint64_t bsize,dfree,dsize;
 526         NTSTATUS status;
 527
 528         /*
 529          * Actually try and commit the space on disk....
 530          */
 531
 532         DEBUG(10,("vfs_allocate_file_space: file %s, len %.0f\n",
 533                   fsp_str_dbg(fsp), (double)len));
 534
 535         if (((off_t)len) < 0) {
 536                 DEBUG(0,("vfs_allocate_file_space: %s negative len "
 537                          "requested.\n", fsp_str_dbg(fsp)));
 538                 errno = EINVAL;
 539                 return -1;
 540         }
 541
 542         status = vfs_stat_fsp(fsp);
 543         if (!NT_STATUS_IS_OK(status)) {
 544                 return -1;
 545         }
 546
 547         if (len == (uint64_t)fsp->fsp_name->st.st_ex_size)
 548                 return 0;
 549
 550         if (len < (uint64_t)fsp->fsp_name->st.st_ex_size) {
 551                 /* Shrink - use ftruncate. */
 552
 553                 DEBUG(10,("vfs_allocate_file_space: file %s, shrink. Current "
 554                           "size %.0f\n", fsp_str_dbg(fsp),
 555                           (double)fsp->fsp_name->st.st_ex_size));
 556
 557                 contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_ALLOC_SHRINK);
 558
 559                 flush_write_cache(fsp, SAMBA_SIZECHANGE_FLUSH);
 560                 if ((ret = SMB_VFS_FTRUNCATE(fsp, (off_t)len)) != -1) {
 561                         set_filelen_write_cache(fsp, len);
 562                 }
 563
 564                 contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_ALLOC_SHRINK);
 565
 566                 return ret;
 567         }
 568
 569         /* Grow - we need to test if we have enough space. */
 570
 571         contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_ALLOC_GROW);
 572
 573         if (lp_strict_allocate(SNUM(fsp->conn))) {
 574                 /* See if we have a syscall that will allocate beyond
 575                    end-of-file without changing EOF. */
 576                 ret = SMB_VFS_FALLOCATE(fsp, VFS_FALLOCATE_FL_KEEP_SIZE,
 577                                         0, len);
 578         } else {
 579                 ret = 0;
 580         }
 581
 582         contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_ALLOC_GROW);
 583
 584         if (ret == 0) {
 585                 /* We changed the allocation size on disk, but not
 586                    EOF - exactly as required. We're done ! */
 587                 return 0;
 588         }
 589
 590         if (ret == -1 && errno == ENOSPC) {
 591                 return -1;
 592         }
 593
 594         len -= fsp->fsp_name->st.st_ex_size;
 595         len /= 1024; /* Len is now number of 1k blocks needed. */
 596         space_avail = get_dfree_info(conn, fsp->fsp_name->base_name,
 597                                      &bsize, &dfree, &dsize);
 598         if (space_avail == (uint64_t)-1) {
 599                 return -1;
 600         }
 601
 602         DEBUG(10,("vfs_allocate_file_space: file %s, grow. Current size %.0f, "
 603                   "needed blocks = %.0f, space avail = %.0f\n",
 604                   fsp_str_dbg(fsp), (double)fsp->fsp_name->st.st_ex_size, (double)len,
 605                   (double)space_avail));
 606
 607         if (len > space_avail) {
 608                 errno = ENOSPC;
 609                 return -1;
 610         }
 611
 612         return 0;
 613 }
 614
 615 /****************************************************************************
 616  A vfs set_filelen call.
 617  set the length of a file from a filedescriptor.
 618  Returns 0 on success, -1 on failure.
 619 ****************************************************************************/
 620
 621 int vfs_set_filelen(files_struct *fsp, off_t len)
 622 {
 623         int ret;
 624
 625         contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_SET_FILE_LEN);
 626
 627         DEBUG(10,("vfs_set_filelen: ftruncate %s to len %.0f\n",
 628                   fsp_str_dbg(fsp), (double)len));
 629         flush_write_cache(fsp, SAMBA_SIZECHANGE_FLUSH);
 630         if ((ret = SMB_VFS_FTRUNCATE(fsp, len)) != -1) {
 631                 set_filelen_write_cache(fsp, len);
 632                 notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
 633                              FILE_NOTIFY_CHANGE_SIZE
 634                              | FILE_NOTIFY_CHANGE_ATTRIBUTES,
 635                              fsp->fsp_name->base_name);
 636         }
 637
 638         contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_SET_FILE_LEN);
 639
 640         return ret;
 641 }
 642
 643 /****************************************************************************
 644  A slow version of fallocate. Fallback code if SMB_VFS_FALLOCATE
 645  fails. Needs to be outside of the default version of SMB_VFS_FALLOCATE
 646  as this is also called from the default SMB_VFS_FTRUNCATE code.
 647  Always extends the file size.
 648  Returns 0 on success, -1 on failure.
 649 ****************************************************************************/
 650
 651 #define SPARSE_BUF_WRITE_SIZE (32*1024)
 652
 653 int vfs_slow_fallocate(files_struct *fsp, off_t offset, off_t len)
 654 {
 655         ssize_t pwrite_ret;
 656         size_t total = 0;
 657
 658         if (!sparse_buf) {
 659                 sparse_buf = SMB_CALLOC_ARRAY(char, SPARSE_BUF_WRITE_SIZE);
 660                 if (!sparse_buf) {
 661                         errno = ENOMEM;
 662                         return -1;
 663                 }
 664         }
 665
 666         while (total < len) {
 667                 size_t curr_write_size = MIN(SPARSE_BUF_WRITE_SIZE, (len - total));
 668
 669                 pwrite_ret = SMB_VFS_PWRITE(fsp, sparse_buf, curr_write_size, offset + total);
 670                 if (pwrite_ret == -1) {
 671                         int saved_errno = errno;
 672                         DEBUG(10,("vfs_slow_fallocate: SMB_VFS_PWRITE for file "
 673                                   "%s failed with error %s\n",
 674                                   fsp_str_dbg(fsp), strerror(saved_errno)));
 675                         errno = saved_errno;
 676                         return -1;
 677                 }
 678                 total += pwrite_ret;
 679         }
 680
 681         return 0;
 682 }
 683
 684 /****************************************************************************
 685  A vfs fill sparse call.
 686  Writes zeros from the end of file to len, if len is greater than EOF.
 687  Used only by strict_sync.
 688  Returns 0 on success, -1 on failure.
 689 ****************************************************************************/
 690
 691 int vfs_fill_sparse(files_struct *fsp, off_t len)
 692 {
 693         int ret;
 694         NTSTATUS status;
 695         off_t offset;
 696         size_t num_to_write;
 697
 698         status = vfs_stat_fsp(fsp);
 699         if (!NT_STATUS_IS_OK(status)) {
 700                 return -1;
 701         }
 702
 703         if (len <= fsp->fsp_name->st.st_ex_size) {
 704                 return 0;
 705         }
 706
 707 #ifdef S_ISFIFO
 708         if (S_ISFIFO(fsp->fsp_name->st.st_ex_mode)) {
 709                 return 0;
 710         }
 711 #endif
 712
 713         DEBUG(10,("vfs_fill_sparse: write zeros in file %s from len %.0f to "
 714                   "len %.0f (%.0f bytes)\n", fsp_str_dbg(fsp),
 715                   (double)fsp->fsp_name->st.st_ex_size, (double)len,
 716                   (double)(len - fsp->fsp_name->st.st_ex_size)));
 717
 718         contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_FILL_SPARSE);
 719
 720         flush_write_cache(fsp, SAMBA_SIZECHANGE_FLUSH);
 721
 722         offset = fsp->fsp_name->st.st_ex_size;
 723         num_to_write = len - fsp->fsp_name->st.st_ex_size;
 724
 725         /* Only do this on non-stream file handles. */
 726         if (fsp->base_fsp == NULL) {
 727                 /* for allocation try fallocate first. This can fail on some
 728                  * platforms e.g. when the filesystem doesn't support it and no
 729                  * emulation is being done by the libc (like on AIX with JFS1). In that
 730                  * case we do our own emulation. fallocate implementations can
 731                  * return ENOTSUP or EINVAL in cases like that. */
 732                 ret = SMB_VFS_FALLOCATE(fsp, 0, offset, num_to_write);
 733                 if (ret == -1 && errno == ENOSPC) {
 734                         goto out;
 735                 }
 736                 if (ret == 0) {
 737                         goto out;
 738                 }
 739                 DEBUG(10,("vfs_fill_sparse: SMB_VFS_FALLOCATE failed with "
 740                         "error %d. Falling back to slow manual allocation\n", ret));
 741         }
 742
 743         ret = vfs_slow_fallocate(fsp, offset, num_to_write);
 744
 745  out:
 746
 747         if (ret == 0) {
 748                 set_filelen_write_cache(fsp, len);
 749         }
 750
 751         contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_FILL_SPARSE);
 752         return ret;
 753 }
 754
 755 /****************************************************************************
 756  Transfer some data (n bytes) between two file_struct's.
 757 ****************************************************************************/
 758
 759 static ssize_t vfs_pread_fn(void *file, void *buf, size_t len, off_t offset)
 760 {
 761         struct files_struct *fsp = (struct files_struct *)file;
 762
 763         return SMB_VFS_PREAD(fsp, buf, len, offset);
 764 }
 765
 766 static ssize_t vfs_pwrite_fn(void *file, const void *buf, size_t len, off_t offset)
 767 {
 768         struct files_struct *fsp = (struct files_struct *)file;
 769
 770         return SMB_VFS_PWRITE(fsp, buf, len, offset);
 771 }
 772
 773 off_t vfs_transfer_file(files_struct *in, files_struct *out, off_t n)
 774 {
 775         return transfer_file_internal((void *)in, (void *)out, n,
 776                                       vfs_pread_fn, vfs_pwrite_fn);
 777 }
 778
 779 /*******************************************************************
 780  A vfs_readdir wrapper which just returns the file name.
 781 ********************************************************************/
 782
 783 const char *vfs_readdirname(connection_struct *conn, void *p,
 784                             SMB_STRUCT_STAT *sbuf, char **talloced)
 785 {
 786         struct dirent *ptr= NULL;
 787         const char *dname;
 788         char *translated;
 789         NTSTATUS status;
 790
 791         if (!p)
 792                 return(NULL);
 793
 794         ptr = SMB_VFS_READDIR(conn, (DIR *)p, sbuf);
 795         if (!ptr)
 796                 return(NULL);
 797
 798         dname = ptr->d_name;
 799
 800
 801 #ifdef NEXT2
 802         if (telldir(p) < 0)
 803                 return(NULL);
 804 #endif
 805
 806 #ifdef HAVE_BROKEN_READDIR_NAME
 807         /* using /usr/ucb/cc is BAD */
 808         dname = dname - 2;
 809 #endif
 810
 811         status = SMB_VFS_TRANSLATE_NAME(conn, dname, vfs_translate_to_windows,
 812                                         talloc_tos(), &translated);
 813         if (NT_STATUS_EQUAL(status, NT_STATUS_NONE_MAPPED)) {
 814                 *talloced = NULL;
 815                 return dname;
 816         }
 817         *talloced = translated;
 818         if (!NT_STATUS_IS_OK(status)) {
 819                 return NULL;
 820         }
 821         return translated;
 822 }
 823
 824 /*******************************************************************
 825  A wrapper for vfs_chdir().
 826 ********************************************************************/
 827
 828 int vfs_ChDir(connection_struct *conn, const char *path)
 829 {
 830         int ret;
 831
 832         if (!LastDir) {
 833                 LastDir = SMB_STRDUP("");
 834         }
 835
 836         if (ISDOT(path)) {
 837                 return 0;
 838         }
 839
 840         if (*path == '/' && strcsequal(LastDir,path)) {
 841                 return 0;
 842         }
 843
 844         DEBUG(4,("vfs_ChDir to %s\n",path));
 845
 846         ret = SMB_VFS_CHDIR(conn,path);
 847         if (ret == 0) {
 848                 /* Global cache. */
 849                 SAFE_FREE(LastDir);
 850                 LastDir = SMB_STRDUP(path);
 851
 852                 /* conn cache. */
 853                 TALLOC_FREE(conn->cwd);
 854                 conn->cwd = vfs_GetWd(conn, conn);
 855                 DEBUG(4,("vfs_ChDir got %s\n",conn->cwd));
 856         }
 857         return ret;
 858 }
 859
 860 /*******************************************************************
 861  Return the absolute current directory path - given a UNIX pathname.
 862  Note that this path is returned in DOS format, not UNIX
 863  format. Note this can be called with conn == NULL.
 864 ********************************************************************/
 865
 866 char *vfs_GetWd(TALLOC_CTX *ctx, connection_struct *conn)
 867 {
 868         char *current_dir = NULL;
 869         char *result = NULL;
 870         DATA_BLOB cache_value;
 871         struct file_id key;
 872         struct smb_filename *smb_fname_dot = NULL;
 873         struct smb_filename *smb_fname_full = NULL;
 874
 875         if (!lp_getwd_cache()) {
 876                 goto nocache;
 877         }
 878
 879         smb_fname_dot = synthetic_smb_fname(ctx, ".", NULL, NULL);
 880         if (smb_fname_dot == NULL) {
 881                 errno = ENOMEM;
 882                 goto out;
 883         }
 884
 885         if (SMB_VFS_STAT(conn, smb_fname_dot) == -1) {
 886                 /*
 887                  * Known to fail for root: the directory may be NFS-mounted
 888                  * and exported with root_squash (so has no root access).
 889                  */
 890                 DEBUG(1,("vfs_GetWd: couldn't stat \".\" error %s "
 891                          "(NFS problem ?)\n", strerror(errno) ));
 892                 goto nocache;
 893         }
 894
 895         key = vfs_file_id_from_sbuf(conn, &smb_fname_dot->st);
 896
 897         if (!memcache_lookup(smbd_memcache(), GETWD_CACHE,
 898                              data_blob_const(&key, sizeof(key)),
 899                              &cache_value)) {
 900                 goto nocache;
 901         }
 902
 903         SMB_ASSERT((cache_value.length > 0)
 904                    && (cache_value.data[cache_value.length-1] == '\0'));
 905
 906         smb_fname_full = synthetic_smb_fname(ctx, (char *)cache_value.data,
 907                                              NULL, NULL);
 908         if (smb_fname_full == NULL) {
 909                 errno = ENOMEM;
 910                 goto out;
 911         }
 912
 913         if ((SMB_VFS_STAT(conn, smb_fname_full) == 0) &&
 914             (smb_fname_dot->st.st_ex_dev == smb_fname_full->st.st_ex_dev) &&
 915             (smb_fname_dot->st.st_ex_ino == smb_fname_full->st.st_ex_ino) &&
 916             (S_ISDIR(smb_fname_dot->st.st_ex_mode))) {
 917                 /*
 918                  * Ok, we're done
 919                  */
 920                 result = talloc_strdup(ctx, smb_fname_full->base_name);
 921                 if (result == NULL) {
 922                         errno = ENOMEM;
 923                 }
 924                 goto out;
 925         }
 926
 927  nocache:
 928
 929         /*
 930          * We don't have the information to hand so rely on traditional
 931          * methods. The very slow getcwd, which spawns a process on some
 932          * systems, or the not quite so bad getwd.
 933          */
 934
 935         current_dir = SMB_VFS_GETWD(conn);
 936         if (current_dir == NULL) {
 937                 DEBUG(0, ("vfs_GetWd: SMB_VFS_GETWD call failed: %s\n",
 938                           strerror(errno)));
 939                 goto out;
 940         }
 941
 942         if (lp_getwd_cache() && VALID_STAT(smb_fname_dot->st)) {
 943                 key = vfs_file_id_from_sbuf(conn, &smb_fname_dot->st);
 944
 945                 memcache_add(smbd_memcache(), GETWD_CACHE,
 946                              data_blob_const(&key, sizeof(key)),
 947                              data_blob_const(current_dir,
 948                                                 strlen(current_dir)+1));
 949         }
 950
 951         result = talloc_strdup(ctx, current_dir);
 952         if (result == NULL) {
 953                 errno = ENOMEM;
 954         }
 955
 956  out:
 957         TALLOC_FREE(smb_fname_dot);
 958         TALLOC_FREE(smb_fname_full);
 959         SAFE_FREE(current_dir);
 960         return result;
 961 }
 962
 963 /*******************************************************************
 964  Reduce a file name, removing .. elements and checking that
 965  it is below dir in the heirachy. This uses realpath.
 966  This function must run as root, and will return names
 967  and valid stat structs that can be checked on open.
 968 ********************************************************************/
 969
 970 NTSTATUS check_reduced_name_with_privilege(connection_struct *conn,
 971                         const char *fname,
 972                         struct smb_request *smbreq)
 973 {
 974         NTSTATUS status;
 975         TALLOC_CTX *ctx = talloc_tos();
 976         const char *conn_rootdir;
 977         size_t rootdir_len;
 978         char *dir_name = NULL;
 979         const char *last_component = NULL;
 980         char *resolved_name = NULL;
 981         char *saved_dir = NULL;
 982         struct smb_filename *smb_fname_cwd = NULL;
 983         struct privilege_paths *priv_paths = NULL;
 984         int ret;
 985
 986         DEBUG(3,("check_reduced_name_with_privilege [%s] [%s]\n",
 987                         fname,
 988                         conn->connectpath));
 989
 990
 991         priv_paths = talloc_zero(smbreq, struct privilege_paths);
 992         if (!priv_paths) {
 993                 status = NT_STATUS_NO_MEMORY;
 994                 goto err;
 995         }
 996
 997         if (!parent_dirname(ctx, fname, &dir_name, &last_component)) {
 998                 status = NT_STATUS_NO_MEMORY;
 999                 goto err;
1000         }
1001
1002         priv_paths->parent_name.base_name = talloc_strdup(priv_paths, dir_name);
1003         priv_paths->file_name.base_name = talloc_strdup(priv_paths, last_component);
1004
1005         if (priv_paths->parent_name.base_name == NULL ||
1006                         priv_paths->file_name.base_name == NULL) {
1007                 status = NT_STATUS_NO_MEMORY;
1008                 goto err;
1009         }
1010
1011         if (SMB_VFS_STAT(conn, &priv_paths->parent_name) != 0) {
1012                 status = map_nt_error_from_unix(errno);
1013                 goto err;
1014         }
1015         /* Remember where we were. */
1016         saved_dir = vfs_GetWd(ctx, conn);
1017         if (!saved_dir) {
1018                 status = map_nt_error_from_unix(errno);
1019                 goto err;
1020         }
1021
1022         /* Go to the parent directory to lock in memory. */
1023         if (vfs_ChDir(conn, priv_paths->parent_name.base_name) == -1) {
1024                 status = map_nt_error_from_unix(errno);
1025                 goto err;
1026         }
1027
1028         /* Get the absolute path of the parent directory. */
1029         resolved_name = SMB_VFS_REALPATH(conn,".");
1030         if (!resolved_name) {
1031                 status = map_nt_error_from_unix(errno);
1032                 goto err;
1033         }
1034
1035         if (*resolved_name != '/') {
1036                 DEBUG(0,("check_reduced_name_with_privilege: realpath "
1037                         "doesn't return absolute paths !\n"));
1038                 status = NT_STATUS_OBJECT_NAME_INVALID;
1039                 goto err;
1040         }
1041
1042         DEBUG(10,("check_reduced_name_with_privilege: realpath [%s] -> [%s]\n",
1043                 priv_paths->parent_name.base_name,
1044                 resolved_name));
1045
1046         /* Now check the stat value is the same. */
1047         smb_fname_cwd = synthetic_smb_fname(talloc_tos(), ".", NULL, NULL);
1048         if (smb_fname_cwd == NULL) {
1049                 status = NT_STATUS_NO_MEMORY;
1050                 goto err;
1051         }
1052
1053         if (SMB_VFS_LSTAT(conn, smb_fname_cwd) != 0) {
1054                 status = map_nt_error_from_unix(errno);
1055                 goto err;
1056         }
1057
1058         /* Ensure we're pointing at the same place. */
1059         if (!check_same_stat(&smb_fname_cwd->st, &priv_paths->parent_name.st)) {
1060                 DEBUG(0,("check_reduced_name_with_privilege: "
1061                         "device/inode/uid/gid on directory %s changed. "
1062                         "Denying access !\n",
1063                         priv_paths->parent_name.base_name));
1064                 status = NT_STATUS_ACCESS_DENIED;
1065                 goto err;
1066         }
1067
1068         /* Ensure we're below the connect path. */
1069
1070         conn_rootdir = SMB_VFS_CONNECTPATH(conn, fname);
1071         if (conn_rootdir == NULL) {
1072                 DEBUG(2, ("check_reduced_name_with_privilege: Could not get "
1073                         "conn_rootdir\n"));
1074                 status = NT_STATUS_ACCESS_DENIED;
1075                 goto err;
1076         }
1077
1078         rootdir_len = strlen(conn_rootdir);
1079         if (strncmp(conn_rootdir, resolved_name, rootdir_len) != 0) {
1080                 DEBUG(2, ("check_reduced_name_with_privilege: Bad access "
1081                         "attempt: %s is a symlink outside the "
1082                         "share path\n",
1083                         dir_name));
1084                 DEBUGADD(2, ("conn_rootdir =%s\n", conn_rootdir));
1085                 DEBUGADD(2, ("resolved_name=%s\n", resolved_name));
1086                 status = NT_STATUS_ACCESS_DENIED;
1087                 goto err;
1088         }
1089
1090         /* Now ensure that the last component either doesn't
1091            exist, or is *NOT* a symlink. */
1092
1093         ret = SMB_VFS_LSTAT(conn, &priv_paths->file_name);
1094         if (ret == -1) {
1095                 /* Errno must be ENOENT for this be ok. */
1096                 if (errno != ENOENT) {
1097                         status = map_nt_error_from_unix(errno);
1098                         DEBUG(2, ("check_reduced_name_with_privilege: "
1099                                 "LSTAT on %s failed with %s\n",
1100                                 priv_paths->file_name.base_name,
1101                                 nt_errstr(status)));
1102                         goto err;
1103                 }
1104         }
1105
1106         if (VALID_STAT(priv_paths->file_name.st) &&
1107                         S_ISLNK(priv_paths->file_name.st.st_ex_mode)) {
1108                 DEBUG(2, ("check_reduced_name_with_privilege: "
1109                         "Last component %s is a symlink. Denying"
1110                         "access.\n",
1111                         priv_paths->file_name.base_name));
1112                 status = NT_STATUS_ACCESS_DENIED;
1113                 goto err;
1114         }
1115
1116         smbreq->priv_paths = priv_paths;
1117         status = NT_STATUS_OK;
1118
1119   err:
1120
1121         if (saved_dir) {
1122                 vfs_ChDir(conn, saved_dir);
1123         }
1124         SAFE_FREE(resolved_name);
1125         if (!NT_STATUS_IS_OK(status)) {
1126                 TALLOC_FREE(priv_paths);
1127         }
1128         TALLOC_FREE(dir_name);
1129         return status;
1130 }
1131
1132 /*******************************************************************
1133  Reduce a file name, removing .. elements and checking that
1134  it is below dir in the heirachy. This uses realpath.
1135 ********************************************************************/
1136
1137 NTSTATUS check_reduced_name(connection_struct *conn, const char *fname)
1138 {
1139         char *resolved_name = NULL;
1140         bool allow_symlinks = true;
1141         bool allow_widelinks = false;
1142
1143         DBG_DEBUG("check_reduced_name [%s] [%s]\n", fname, conn->connectpath);
1144
1145         resolved_name = SMB_VFS_REALPATH(conn,fname);
1146
1147         if (!resolved_name) {
1148                 switch (errno) {
1149                         case ENOTDIR:
1150                                 DEBUG(3,("check_reduced_name: Component not a "
1151                                          "directory in getting realpath for "
1152                                          "%s\n", fname));
1153                                 return NT_STATUS_OBJECT_PATH_NOT_FOUND;
1154                         case ENOENT:
1155                         {
1156                                 TALLOC_CTX *ctx = talloc_tos();
1157                                 char *dir_name = NULL;
1158                                 const char *last_component = NULL;
1159                                 char *new_name = NULL;
1160                                 int ret;
1161
1162                                 /* Last component didn't exist.
1163                                    Remove it and try and canonicalise
1164                                    the directory name. */
1165                                 if (!parent_dirname(ctx, fname,
1166                                                 &dir_name,
1167                                                 &last_component)) {
1168                                         return NT_STATUS_NO_MEMORY;
1169                                 }
1170
1171                                 resolved_name = SMB_VFS_REALPATH(conn,dir_name);
1172                                 if (!resolved_name) {
1173                                         NTSTATUS status = map_nt_error_from_unix(errno);
1174
1175                                         if (errno == ENOENT || errno == ENOTDIR) {
1176                                                 status = NT_STATUS_OBJECT_PATH_NOT_FOUND;
1177                                         }
1178
1179                                         DEBUG(3,("check_reduce_name: "
1180                                                  "couldn't get realpath for "
1181                                                  "%s (%s)\n",
1182                                                 fname,
1183                                                 nt_errstr(status)));
1184                                         return status;
1185                                 }
1186                                 ret = asprintf(&new_name, "%s/%s",
1187                                                resolved_name, last_component);
1188                                 SAFE_FREE(resolved_name);
1189                                 if (ret == -1) {
1190                                         return NT_STATUS_NO_MEMORY;
1191                                 }
1192                                 resolved_name = new_name;
1193                                 break;
1194                         }
1195                         default:
1196                                 DEBUG(3,("check_reduced_name: couldn't get "
1197                                          "realpath for %s\n", fname));
1198                                 return map_nt_error_from_unix(errno);
1199                 }
1200         }
1201
1202         DEBUG(10,("check_reduced_name realpath [%s] -> [%s]\n", fname,
1203                   resolved_name));
1204
1205         if (*resolved_name != '/') {
1206                 DEBUG(0,("check_reduced_name: realpath doesn't return "
1207                          "absolute paths !\n"));
1208                 SAFE_FREE(resolved_name);
1209                 return NT_STATUS_OBJECT_NAME_INVALID;
1210         }
1211
1212         allow_widelinks = lp_widelinks(SNUM(conn));
1213         allow_symlinks = lp_follow_symlinks(SNUM(conn));
1214
1215         /* Common widelinks and symlinks checks. */
1216         if (!allow_widelinks || !allow_symlinks) {
1217                 const char *conn_rootdir;
1218                 size_t rootdir_len;
1219
1220                 conn_rootdir = SMB_VFS_CONNECTPATH(conn, fname);
1221                 if (conn_rootdir == NULL) {
1222                         DEBUG(2, ("check_reduced_name: Could not get "
1223                                 "conn_rootdir\n"));
1224                         SAFE_FREE(resolved_name);
1225                         return NT_STATUS_ACCESS_DENIED;
1226                 }
1227
1228                 rootdir_len = strlen(conn_rootdir);
1229                 if (strncmp(conn_rootdir, resolved_name,
1230                                 rootdir_len) != 0) {
1231                         DEBUG(2, ("check_reduced_name: Bad access "
1232                                 "attempt: %s is a symlink outside the "
1233                                 "share path\n", fname));
1234                         DEBUGADD(2, ("conn_rootdir =%s\n", conn_rootdir));
1235                         DEBUGADD(2, ("resolved_name=%s\n", resolved_name));
1236                         SAFE_FREE(resolved_name);
1237                         return NT_STATUS_ACCESS_DENIED;
1238                 }
1239
1240                 /* Extra checks if all symlinks are disallowed. */
1241                 if (!allow_symlinks) {
1242                         /* fname can't have changed in resolved_path. */
1243                         const char *p = &resolved_name[rootdir_len];
1244
1245                         /* *p can be '\0' if fname was "." */
1246                         if (*p == '\0' && ISDOT(fname)) {
1247                                 goto out;
1248                         }
1249
1250                         if (*p != '/') {
1251                                 DEBUG(2, ("check_reduced_name: logic error (%c) "
1252                                         "in resolved_name: %s\n",
1253                                         *p,
1254                                         fname));
1255                                 SAFE_FREE(resolved_name);
1256                                 return NT_STATUS_ACCESS_DENIED;
1257                         }
1258
1259                         p++;
1260                         if (strcmp(fname, p)!=0) {
1261                                 DEBUG(2, ("check_reduced_name: Bad access "
1262                                         "attempt: %s is a symlink to %s\n",
1263                                           fname, p));
1264                                 SAFE_FREE(resolved_name);
1265                                 return NT_STATUS_ACCESS_DENIED;
1266                         }
1267                 }
1268         }
1269
1270   out:
1271
1272         DBG_INFO("%s reduced to %s\n", fname, resolved_name);
1273         SAFE_FREE(resolved_name);
1274         return NT_STATUS_OK;
1275 }
1276
1277 /**
1278  * XXX: This is temporary and there should be no callers of this once
1279  * smb_filename is plumbed through all path based operations.
1280  *
1281  * Called when we know stream name parsing has already been done.
1282  */
1283 int vfs_stat_smb_basename(struct connection_struct *conn, const char *fname,
1284                        SMB_STRUCT_STAT *psbuf)
1285 {
1286         struct smb_filename smb_fname = {
1287                         .base_name = discard_const_p(char, fname)
1288         };
1289         int ret;
1290
1291         if (lp_posix_pathnames()) {
1292                 ret = SMB_VFS_LSTAT(conn, &smb_fname);
1293         } else {
1294                 ret = SMB_VFS_STAT(conn, &smb_fname);
1295         }
1296
1297         if (ret != -1) {
1298                 *psbuf = smb_fname.st;
1299         }
1300         return ret;
1301 }
1302
1303 /**
1304  * Ensure LSTAT is called for POSIX paths.
1305  */
1306
1307 NTSTATUS vfs_stat_fsp(files_struct *fsp)
1308 {
1309         int ret;
1310
1311         if(fsp->fh->fd == -1) {
1312                 if (fsp->posix_flags & FSP_POSIX_FLAGS_OPEN) {
1313                         ret = SMB_VFS_LSTAT(fsp->conn, fsp->fsp_name);
1314                 } else {
1315                         ret = SMB_VFS_STAT(fsp->conn, fsp->fsp_name);
1316                 }
1317                 if (ret == -1) {
1318                         return map_nt_error_from_unix(errno);
1319                 }
1320         } else {
1321                 if(SMB_VFS_FSTAT(fsp, &fsp->fsp_name->st) != 0) {
1322                         return map_nt_error_from_unix(errno);
1323                 }
1324         }
1325         return NT_STATUS_OK;
1326 }
1327
1328 /**
1329  * Initialize num_streams and streams, then call VFS op streaminfo
1330  */
1331 NTSTATUS vfs_streaminfo(connection_struct *conn,
1332                         struct files_struct *fsp,
1333                         const char *fname,
1334                         TALLOC_CTX *mem_ctx,
1335                         unsigned int *num_streams,
1336                         struct stream_struct **streams)
1337 {
1338         *num_streams = 0;
1339         *streams = NULL;
1340         return SMB_VFS_STREAMINFO(conn, fsp, fname, mem_ctx, num_streams, streams);
1341 }
1342
1343 /*
1344   generate a file_id from a stat structure
1345  */
1346 struct file_id vfs_file_id_from_sbuf(connection_struct *conn, const SMB_STRUCT_STAT *sbuf)
1347 {
1348         return SMB_VFS_FILE_ID_CREATE(conn, sbuf);
1349 }
1350
1351 int smb_vfs_call_connect(struct vfs_handle_struct *handle,
1352                          const char *service, const char *user)
1353 {
1354         VFS_FIND(connect);
1355         return handle->fns->connect_fn(handle, service, user);
1356 }
1357
1358 void smb_vfs_call_disconnect(struct vfs_handle_struct *handle)
1359 {
1360         VFS_FIND(disconnect);
1361         handle->fns->disconnect_fn(handle);
1362 }
1363
1364 uint64_t smb_vfs_call_disk_free(struct vfs_handle_struct *handle,
1365                                 const char *path, uint64_t *bsize,
1366                                 uint64_t *dfree, uint64_t *dsize)
1367 {
1368         VFS_FIND(disk_free);
1369         return handle->fns->disk_free_fn(handle, path, bsize, dfree, dsize);
1370 }
1371
1372 int smb_vfs_call_get_quota(struct vfs_handle_struct *handle,
1373                            enum SMB_QUOTA_TYPE qtype, unid_t id,
1374                            SMB_DISK_QUOTA *qt)
1375 {
1376         VFS_FIND(get_quota);
1377         return handle->fns->get_quota_fn(handle, qtype, id, qt);
1378 }
1379
1380 int smb_vfs_call_set_quota(struct vfs_handle_struct *handle,
1381                            enum SMB_QUOTA_TYPE qtype, unid_t id,
1382                            SMB_DISK_QUOTA *qt)
1383 {
1384         VFS_FIND(set_quota);
1385         return handle->fns->set_quota_fn(handle, qtype, id, qt);
1386 }
1387
1388 int smb_vfs_call_get_shadow_copy_data(struct vfs_handle_struct *handle,
1389                                       struct files_struct *fsp,
1390                                       struct shadow_copy_data *shadow_copy_data,
1391                                       bool labels)
1392 {
1393         VFS_FIND(get_shadow_copy_data);
1394         return handle->fns->get_shadow_copy_data_fn(handle, fsp,
1395                                                     shadow_copy_data,
1396                                                     labels);
1397 }
1398 int smb_vfs_call_statvfs(struct vfs_handle_struct *handle, const char *path,
1399                          struct vfs_statvfs_struct *statbuf)
1400 {
1401         VFS_FIND(statvfs);
1402         return handle->fns->statvfs_fn(handle, path, statbuf);
1403 }
1404
1405 uint32_t smb_vfs_call_fs_capabilities(struct vfs_handle_struct *handle,
1406                         enum timestamp_set_resolution *p_ts_res)
1407 {
1408         VFS_FIND(fs_capabilities);
1409         return handle->fns->fs_capabilities_fn(handle, p_ts_res);
1410 }
1411
1412 NTSTATUS smb_vfs_call_get_dfs_referrals(struct vfs_handle_struct *handle,
1413                                         struct dfs_GetDFSReferral *r)
1414 {
1415         VFS_FIND(get_dfs_referrals);
1416         return handle->fns->get_dfs_referrals_fn(handle, r);
1417 }
1418
1419 DIR *smb_vfs_call_opendir(struct vfs_handle_struct *handle,
1420                                      const char *fname, const char *mask,
1421                                      uint32_t attributes)
1422 {
1423         VFS_FIND(opendir);
1424         return handle->fns->opendir_fn(handle, fname, mask, attributes);
1425 }
1426
1427 DIR *smb_vfs_call_fdopendir(struct vfs_handle_struct *handle,
1428                                         struct files_struct *fsp,
1429                                         const char *mask,
1430                                         uint32_t attributes)
1431 {
1432         VFS_FIND(fdopendir);
1433         return handle->fns->fdopendir_fn(handle, fsp, mask, attributes);
1434 }
1435
1436 struct dirent *smb_vfs_call_readdir(struct vfs_handle_struct *handle,
1437                                               DIR *dirp,
1438                                               SMB_STRUCT_STAT *sbuf)
1439 {
1440         VFS_FIND(readdir);
1441         return handle->fns->readdir_fn(handle, dirp, sbuf);
1442 }
1443
1444 void smb_vfs_call_seekdir(struct vfs_handle_struct *handle,
1445                           DIR *dirp, long offset)
1446 {
1447         VFS_FIND(seekdir);
1448         handle->fns->seekdir_fn(handle, dirp, offset);
1449 }
1450
1451 long smb_vfs_call_telldir(struct vfs_handle_struct *handle,
1452                           DIR *dirp)
1453 {
1454         VFS_FIND(telldir);
1455         return handle->fns->telldir_fn(handle, dirp);
1456 }
1457
1458 void smb_vfs_call_rewind_dir(struct vfs_handle_struct *handle,
1459                              DIR *dirp)
1460 {
1461         VFS_FIND(rewind_dir);
1462         handle->fns->rewind_dir_fn(handle, dirp);
1463 }
1464
1465 int smb_vfs_call_mkdir(struct vfs_handle_struct *handle, const char *path,
1466                        mode_t mode)
1467 {
1468         VFS_FIND(mkdir);
1469         return handle->fns->mkdir_fn(handle, path, mode);
1470 }
1471
1472 int smb_vfs_call_rmdir(struct vfs_handle_struct *handle, const char *path)
1473 {
1474         VFS_FIND(rmdir);
1475         return handle->fns->rmdir_fn(handle, path);
1476 }
1477
1478 int smb_vfs_call_closedir(struct vfs_handle_struct *handle,
1479                           DIR *dir)
1480 {
1481         VFS_FIND(closedir);
1482         return handle->fns->closedir_fn(handle, dir);
1483 }
1484
1485 void smb_vfs_call_init_search_op(struct vfs_handle_struct *handle,
1486                                  DIR *dirp)
1487 {
1488         VFS_FIND(init_search_op);
1489         handle->fns->init_search_op_fn(handle, dirp);
1490 }
1491
1492 int smb_vfs_call_open(struct vfs_handle_struct *handle,
1493                       struct smb_filename *smb_fname, struct files_struct *fsp,
1494                       int flags, mode_t mode)
1495 {
1496         VFS_FIND(open);
1497         return handle->fns->open_fn(handle, smb_fname, fsp, flags, mode);
1498 }
1499
1500 NTSTATUS smb_vfs_call_create_file(struct vfs_handle_struct *handle,
1501                                   struct smb_request *req,
1502                                   uint16_t root_dir_fid,
1503                                   struct smb_filename *smb_fname,
1504                                   uint32_t access_mask,
1505                                   uint32_t share_access,
1506                                   uint32_t create_disposition,
1507                                   uint32_t create_options,
1508                                   uint32_t file_attributes,
1509                                   uint32_t oplock_request,
1510                                   struct smb2_lease *lease,
1511                                   uint64_t allocation_size,
1512                                   uint32_t private_flags,
1513                                   struct security_descriptor *sd,
1514                                   struct ea_list *ea_list,
1515                                   files_struct **result,
1516                                   int *pinfo,
1517                                   const struct smb2_create_blobs *in_context_blobs,
1518                                   struct smb2_create_blobs *out_context_blobs)
1519 {
1520         VFS_FIND(create_file);
1521         return handle->fns->create_file_fn(
1522                 handle, req, root_dir_fid, smb_fname, access_mask,
1523                 share_access, create_disposition, create_options,
1524                 file_attributes, oplock_request, lease, allocation_size,
1525                 private_flags, sd, ea_list,
1526                 result, pinfo, in_context_blobs, out_context_blobs);
1527 }
1528
1529 int smb_vfs_call_close(struct vfs_handle_struct *handle,
1530                        struct files_struct *fsp)
1531 {
1532         VFS_FIND(close);
1533         return handle->fns->close_fn(handle, fsp);
1534 }
1535
1536 ssize_t smb_vfs_call_read(struct vfs_handle_struct *handle,
1537                           struct files_struct *fsp, void *data, size_t n)
1538 {
1539         VFS_FIND(read);
1540         return handle->fns->read_fn(handle, fsp, data, n);
1541 }
1542
1543 ssize_t smb_vfs_call_pread(struct vfs_handle_struct *handle,
1544                            struct files_struct *fsp, void *data, size_t n,
1545                            off_t offset)
1546 {
1547         VFS_FIND(pread);
1548         return handle->fns->pread_fn(handle, fsp, data, n, offset);
1549 }
1550
1551 struct smb_vfs_call_pread_state {
1552         ssize_t (*recv_fn)(struct tevent_req *req, int *err);
1553         ssize_t retval;
1554 };
1555
1556 static void smb_vfs_call_pread_done(struct tevent_req *subreq);
1557
1558 struct tevent_req *smb_vfs_call_pread_send(struct vfs_handle_struct *handle,
1559                                            TALLOC_CTX *mem_ctx,
1560                                            struct tevent_context *ev,
1561                                            struct files_struct *fsp,
1562                                            void *data,
1563                                            size_t n, off_t offset)
1564 {
1565         struct tevent_req *req, *subreq;
1566         struct smb_vfs_call_pread_state *state;
1567
1568         req = tevent_req_create(mem_ctx, &state,
1569                                 struct smb_vfs_call_pread_state);
1570         if (req == NULL) {
1571                 return NULL;
1572         }
1573         VFS_FIND(pread_send);
1574         state->recv_fn = handle->fns->pread_recv_fn;
1575
1576         subreq = handle->fns->pread_send_fn(handle, state, ev, fsp, data, n,
1577                                             offset);
1578         if (tevent_req_nomem(subreq, req)) {
1579                 return tevent_req_post(req, ev);
1580         }
1581         tevent_req_set_callback(subreq, smb_vfs_call_pread_done, req);
1582         return req;
1583 }
1584
1585 static void smb_vfs_call_pread_done(struct tevent_req *subreq)
1586 {
1587         struct tevent_req *req = tevent_req_callback_data(
1588                 subreq, struct tevent_req);
1589         struct smb_vfs_call_pread_state *state = tevent_req_data(
1590                 req, struct smb_vfs_call_pread_state);
1591         int err;
1592
1593         state->retval = state->recv_fn(subreq, &err);
1594         TALLOC_FREE(subreq);
1595         if (state->retval == -1) {
1596                 tevent_req_error(req, err);
1597                 return;
1598         }
1599         tevent_req_done(req);
1600 }
1601
1602 ssize_t SMB_VFS_PREAD_RECV(struct tevent_req *req, int *perrno)
1603 {
1604         struct smb_vfs_call_pread_state *state = tevent_req_data(
1605                 req, struct smb_vfs_call_pread_state);
1606         int err;
1607
1608         if (tevent_req_is_unix_error(req, &err)) {
1609                 *perrno = err;
1610                 return -1;
1611         }
1612         return state->retval;
1613 }
1614
1615 ssize_t smb_vfs_call_write(struct vfs_handle_struct *handle,
1616                            struct files_struct *fsp, const void *data,
1617                            size_t n)
1618 {
1619         VFS_FIND(write);
1620         return handle->fns->write_fn(handle, fsp, data, n);
1621 }
1622
1623 ssize_t smb_vfs_call_pwrite(struct vfs_handle_struct *handle,
1624                             struct files_struct *fsp, const void *data,
1625                             size_t n, off_t offset)
1626 {
1627         VFS_FIND(pwrite);
1628         return handle->fns->pwrite_fn(handle, fsp, data, n, offset);
1629 }
1630
1631 struct smb_vfs_call_pwrite_state {
1632         ssize_t (*recv_fn)(struct tevent_req *req, int *err);
1633         ssize_t retval;
1634 };
1635
1636 static void smb_vfs_call_pwrite_done(struct tevent_req *subreq);
1637
1638 struct tevent_req *smb_vfs_call_pwrite_send(struct vfs_handle_struct *handle,
1639                                             TALLOC_CTX *mem_ctx,
1640                                             struct tevent_context *ev,
1641                                             struct files_struct *fsp,
1642                                             const void *data,
1643                                             size_t n, off_t offset)
1644 {
1645         struct tevent_req *req, *subreq;
1646         struct smb_vfs_call_pwrite_state *state;
1647
1648         req = tevent_req_create(mem_ctx, &state,
1649                                 struct smb_vfs_call_pwrite_state);
1650         if (req == NULL) {
1651                 return NULL;
1652         }
1653         VFS_FIND(pwrite_send);
1654         state->recv_fn = handle->fns->pwrite_recv_fn;
1655
1656         subreq = handle->fns->pwrite_send_fn(handle, state, ev, fsp, data, n,
1657                                              offset);
1658         if (tevent_req_nomem(subreq, req)) {
1659                 return tevent_req_post(req, ev);
1660         }
1661         tevent_req_set_callback(subreq, smb_vfs_call_pwrite_done, req);
1662         return req;
1663 }
1664
1665 static void smb_vfs_call_pwrite_done(struct tevent_req *subreq)
1666 {
1667         struct tevent_req *req = tevent_req_callback_data(
1668                 subreq, struct tevent_req);
1669         struct smb_vfs_call_pwrite_state *state = tevent_req_data(
1670                 req, struct smb_vfs_call_pwrite_state);
1671         int err;
1672
1673         state->retval = state->recv_fn(subreq, &err);
1674         TALLOC_FREE(subreq);
1675         if (state->retval == -1) {
1676                 tevent_req_error(req, err);
1677                 return;
1678         }
1679         tevent_req_done(req);
1680 }
1681
1682 ssize_t SMB_VFS_PWRITE_RECV(struct tevent_req *req, int *perrno)
1683 {
1684         struct smb_vfs_call_pwrite_state *state = tevent_req_data(
1685                 req, struct smb_vfs_call_pwrite_state);
1686         int err;
1687
1688         if (tevent_req_is_unix_error(req, &err)) {
1689                 *perrno = err;
1690                 return -1;
1691         }
1692         return state->retval;
1693 }
1694
1695 off_t smb_vfs_call_lseek(struct vfs_handle_struct *handle,
1696                              struct files_struct *fsp, off_t offset,
1697                              int whence)
1698 {
1699         VFS_FIND(lseek);
1700         return handle->fns->lseek_fn(handle, fsp, offset, whence);
1701 }
1702
1703 ssize_t smb_vfs_call_sendfile(struct vfs_handle_struct *handle, int tofd,
1704                               files_struct *fromfsp, const DATA_BLOB *header,
1705                               off_t offset, size_t count)
1706 {
1707         VFS_FIND(sendfile);
1708         return handle->fns->sendfile_fn(handle, tofd, fromfsp, header, offset,
1709                                         count);
1710 }
1711
1712 ssize_t smb_vfs_call_recvfile(struct vfs_handle_struct *handle, int fromfd,
1713                               files_struct *tofsp, off_t offset,
1714                               size_t count)
1715 {
1716         VFS_FIND(recvfile);
1717         return handle->fns->recvfile_fn(handle, fromfd, tofsp, offset, count);
1718 }
1719
1720 int smb_vfs_call_rename(struct vfs_handle_struct *handle,
1721                         const struct smb_filename *smb_fname_src,
1722                         const struct smb_filename *smb_fname_dst)
1723 {
1724         VFS_FIND(rename);
1725         return handle->fns->rename_fn(handle, smb_fname_src, smb_fname_dst);
1726 }
1727
1728 int smb_vfs_call_fsync(struct vfs_handle_struct *handle,
1729                        struct files_struct *fsp)
1730 {
1731         VFS_FIND(fsync);
1732         return handle->fns->fsync_fn(handle, fsp);
1733 }
1734
1735 struct smb_vfs_call_fsync_state {
1736         int (*recv_fn)(struct tevent_req *req, int *err);
1737         int retval;
1738 };
1739
1740 static void smb_vfs_call_fsync_done(struct tevent_req *subreq);
1741
1742 struct tevent_req *smb_vfs_call_fsync_send(struct vfs_handle_struct *handle,
1743                                            TALLOC_CTX *mem_ctx,
1744                                            struct tevent_context *ev,
1745                                            struct files_struct *fsp)
1746 {
1747         struct tevent_req *req, *subreq;
1748         struct smb_vfs_call_fsync_state *state;
1749
1750         req = tevent_req_create(mem_ctx, &state,
1751                                 struct smb_vfs_call_fsync_state);
1752         if (req == NULL) {
1753                 return NULL;
1754         }
1755         VFS_FIND(fsync_send);
1756         state->recv_fn = handle->fns->fsync_recv_fn;
1757
1758         subreq = handle->fns->fsync_send_fn(handle, state, ev, fsp);
1759         if (tevent_req_nomem(subreq, req)) {
1760                 return tevent_req_post(req, ev);
1761         }
1762         tevent_req_set_callback(subreq, smb_vfs_call_fsync_done, req);
1763         return req;
1764 }
1765
1766 static void smb_vfs_call_fsync_done(struct tevent_req *subreq)
1767 {
1768         struct tevent_req *req = tevent_req_callback_data(
1769                 subreq, struct tevent_req);
1770         struct smb_vfs_call_fsync_state *state = tevent_req_data(
1771                 req, struct smb_vfs_call_fsync_state);
1772         int err;
1773
1774         state->retval = state->recv_fn(subreq, &err);
1775         TALLOC_FREE(subreq);
1776         if (state->retval == -1) {
1777                 tevent_req_error(req, err);
1778                 return;
1779         }
1780         tevent_req_done(req);
1781 }
1782
1783 int SMB_VFS_FSYNC_RECV(struct tevent_req *req, int *perrno)
1784 {
1785         struct smb_vfs_call_fsync_state *state = tevent_req_data(
1786                 req, struct smb_vfs_call_fsync_state);
1787         int err;
1788
1789         if (tevent_req_is_unix_error(req, &err)) {
1790                 *perrno = err;
1791                 return -1;
1792         }
1793         return state->retval;
1794 }
1795
1796
1797 int smb_vfs_call_stat(struct vfs_handle_struct *handle,
1798                       struct smb_filename *smb_fname)
1799 {
1800         VFS_FIND(stat);
1801         return handle->fns->stat_fn(handle, smb_fname);
1802 }
1803
1804 int smb_vfs_call_fstat(struct vfs_handle_struct *handle,
1805                        struct files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1806 {
1807         VFS_FIND(fstat);
1808         return handle->fns->fstat_fn(handle, fsp, sbuf);
1809 }
1810
1811 int smb_vfs_call_lstat(struct vfs_handle_struct *handle,
1812                        struct smb_filename *smb_filename)
1813 {
1814         VFS_FIND(lstat);
1815         return handle->fns->lstat_fn(handle, smb_filename);
1816 }
1817
1818 uint64_t smb_vfs_call_get_alloc_size(struct vfs_handle_struct *handle,
1819                                      struct files_struct *fsp,
1820                                      const SMB_STRUCT_STAT *sbuf)
1821 {
1822         VFS_FIND(get_alloc_size);
1823         return handle->fns->get_alloc_size_fn(handle, fsp, sbuf);
1824 }
1825
1826 int smb_vfs_call_unlink(struct vfs_handle_struct *handle,
1827                         const struct smb_filename *smb_fname)
1828 {
1829         VFS_FIND(unlink);
1830         return handle->fns->unlink_fn(handle, smb_fname);
1831 }
1832
1833 int smb_vfs_call_chmod(struct vfs_handle_struct *handle, const char *path,
1834                        mode_t mode)
1835 {
1836         VFS_FIND(chmod);
1837         return handle->fns->chmod_fn(handle, path, mode);
1838 }
1839
1840 int smb_vfs_call_fchmod(struct vfs_handle_struct *handle,
1841                         struct files_struct *fsp, mode_t mode)
1842 {
1843         VFS_FIND(fchmod);
1844         return handle->fns->fchmod_fn(handle, fsp, mode);
1845 }
1846
1847 int smb_vfs_call_chown(struct vfs_handle_struct *handle, const char *path,
1848                        uid_t uid, gid_t gid)
1849 {
1850         VFS_FIND(chown);
1851         return handle->fns->chown_fn(handle, path, uid, gid);
1852 }
1853
1854 int smb_vfs_call_fchown(struct vfs_handle_struct *handle,
1855                         struct files_struct *fsp, uid_t uid, gid_t gid)
1856 {
1857         VFS_FIND(fchown);
1858         return handle->fns->fchown_fn(handle, fsp, uid, gid);
1859 }
1860
1861 int smb_vfs_call_lchown(struct vfs_handle_struct *handle, const char *path,
1862                         uid_t uid, gid_t gid)
1863 {
1864         VFS_FIND(lchown);
1865         return handle->fns->lchown_fn(handle, path, uid, gid);
1866 }
1867
1868 NTSTATUS vfs_chown_fsp(files_struct *fsp, uid_t uid, gid_t gid)
1869 {
1870         int ret;
1871         bool as_root = false;
1872         const char *path;
1873         char *saved_dir = NULL;
1874         char *parent_dir = NULL;
1875         NTSTATUS status;
1876
1877         if (fsp->fh->fd != -1) {
1878                 /* Try fchown. */
1879                 ret = SMB_VFS_FCHOWN(fsp, uid, gid);
1880                 if (ret == 0) {
1881                         return NT_STATUS_OK;
1882                 }
1883                 if (ret == -1 && errno != ENOSYS) {
1884                         return map_nt_error_from_unix(errno);
1885                 }
1886         }
1887
1888         as_root = (geteuid() == 0);
1889
1890         if (as_root) {
1891                 /*
1892                  * We are being asked to chown as root. Make
1893                  * sure we chdir() into the path to pin it,
1894                  * and always act using lchown to ensure we
1895                  * don't deref any symbolic links.
1896                  */
1897                 const char *final_component = NULL;
1898                 struct smb_filename local_fname;
1899
1900                 saved_dir = vfs_GetWd(talloc_tos(),fsp->conn);
1901                 if (!saved_dir) {
1902                         status = map_nt_error_from_unix(errno);
1903                         DEBUG(0,("vfs_chown_fsp: failed to get "
1904                                 "current working directory. Error was %s\n",
1905                                 strerror(errno)));
1906                         return status;
1907                 }
1908
1909                 if (!parent_dirname(talloc_tos(),
1910                                 fsp->fsp_name->base_name,
1911                                 &parent_dir,
1912                                 &final_component)) {
1913                         return NT_STATUS_NO_MEMORY;
1914                 }
1915
1916                 /* cd into the parent dir to pin it. */
1917                 ret = vfs_ChDir(fsp->conn, parent_dir);
1918                 if (ret == -1) {
1919                         return map_nt_error_from_unix(errno);
1920                 }
1921
1922                 ZERO_STRUCT(local_fname);
1923                 local_fname.base_name = discard_const_p(char, final_component);
1924
1925                 /* Must use lstat here. */
1926                 ret = SMB_VFS_LSTAT(fsp->conn, &local_fname);
1927                 if (ret == -1) {
1928                         status = map_nt_error_from_unix(errno);
1929                         goto out;
1930                 }
1931
1932                 /* Ensure it matches the fsp stat. */
1933                 if (!check_same_stat(&local_fname.st, &fsp->fsp_name->st)) {
1934                         status = NT_STATUS_ACCESS_DENIED;
1935                         goto out;
1936                 }
1937                 path = final_component;
1938         } else {
1939                 path = fsp->fsp_name->base_name;
1940         }
1941
1942         if ((fsp->posix_flags & FSP_POSIX_FLAGS_OPEN) || as_root) {
1943                 ret = SMB_VFS_LCHOWN(fsp->conn,
1944                         path,
1945                         uid, gid);
1946         } else {
1947                 ret = SMB_VFS_CHOWN(fsp->conn,
1948                         path,
1949                         uid, gid);
1950         }
1951
1952         if (ret == 0) {
1953                 status = NT_STATUS_OK;
1954         } else {
1955                 status = map_nt_error_from_unix(errno);
1956         }
1957
1958   out:
1959
1960         if (as_root) {
1961                 vfs_ChDir(fsp->conn,saved_dir);
1962                 TALLOC_FREE(saved_dir);
1963                 TALLOC_FREE(parent_dir);
1964         }
1965         return status;
1966 }
1967
1968 int smb_vfs_call_chdir(struct vfs_handle_struct *handle, const char *path)
1969 {
1970         VFS_FIND(chdir);
1971         return handle->fns->chdir_fn(handle, path);
1972 }
1973
1974 char *smb_vfs_call_getwd(struct vfs_handle_struct *handle)
1975 {
1976         VFS_FIND(getwd);
1977         return handle->fns->getwd_fn(handle);
1978 }
1979
1980 int smb_vfs_call_ntimes(struct vfs_handle_struct *handle,
1981                         const struct smb_filename *smb_fname,
1982                         struct smb_file_time *ft)
1983 {
1984         VFS_FIND(ntimes);
1985         return handle->fns->ntimes_fn(handle, smb_fname, ft);
1986 }
1987
1988 int smb_vfs_call_ftruncate(struct vfs_handle_struct *handle,
1989                            struct files_struct *fsp, off_t offset)
1990 {
1991         VFS_FIND(ftruncate);
1992         return handle->fns->ftruncate_fn(handle, fsp, offset);
1993 }
1994
1995 int smb_vfs_call_fallocate(struct vfs_handle_struct *handle,
1996                            struct files_struct *fsp,
1997                            uint32_t mode,
1998                            off_t offset,
1999                            off_t len)
2000 {
2001         VFS_FIND(fallocate);
2002         return handle->fns->fallocate_fn(handle, fsp, mode, offset, len);
2003 }
2004
2005 int smb_vfs_call_kernel_flock(struct vfs_handle_struct *handle,
2006                               struct files_struct *fsp, uint32_t share_mode,
2007                               uint32_t access_mask)
2008 {
2009         VFS_FIND(kernel_flock);
2010         return handle->fns->kernel_flock_fn(handle, fsp, share_mode,
2011                                          access_mask);
2012 }
2013
2014 int smb_vfs_call_linux_setlease(struct vfs_handle_struct *handle,
2015                                 struct files_struct *fsp, int leasetype)
2016 {
2017         VFS_FIND(linux_setlease);
2018         return handle->fns->linux_setlease_fn(handle, fsp, leasetype);
2019 }
2020
2021 int smb_vfs_call_symlink(struct vfs_handle_struct *handle, const char *oldpath,
2022                          const char *newpath)
2023 {
2024         VFS_FIND(symlink);
2025         return handle->fns->symlink_fn(handle, oldpath, newpath);
2026 }
2027
2028 int smb_vfs_call_readlink(struct vfs_handle_struct *handle,
2029                               const char *path, char *buf, size_t bufsiz)
2030 {
2031         VFS_FIND(readlink);
2032         return handle->fns->readlink_fn(handle, path, buf, bufsiz);
2033 }
2034
2035 int smb_vfs_call_link(struct vfs_handle_struct *handle, const char *oldpath,
2036                       const char *newpath)
2037 {
2038         VFS_FIND(link);
2039         return handle->fns->link_fn(handle, oldpath, newpath);
2040 }
2041
2042 int smb_vfs_call_mknod(struct vfs_handle_struct *handle, const char *path,
2043                        mode_t mode, SMB_DEV_T dev)
2044 {
2045         VFS_FIND(mknod);
2046         return handle->fns->mknod_fn(handle, path, mode, dev);
2047 }
2048
2049 char *smb_vfs_call_realpath(struct vfs_handle_struct *handle, const char *path)
2050 {
2051         VFS_FIND(realpath);
2052         return handle->fns->realpath_fn(handle, path);
2053 }
2054
2055 int smb_vfs_call_chflags(struct vfs_handle_struct *handle, const char *path,
2056                          unsigned int flags)
2057 {
2058         VFS_FIND(chflags);
2059         return handle->fns->chflags_fn(handle, path, flags);
2060 }
2061
2062 struct file_id smb_vfs_call_file_id_create(struct vfs_handle_struct *handle,
2063                                            const SMB_STRUCT_STAT *sbuf)
2064 {
2065         VFS_FIND(file_id_create);
2066         return handle->fns->file_id_create_fn(handle, sbuf);
2067 }
2068
2069 NTSTATUS smb_vfs_call_streaminfo(struct vfs_handle_struct *handle,
2070                                  struct files_struct *fsp,
2071                                  const char *fname,
2072                                  TALLOC_CTX *mem_ctx,
2073                                  unsigned int *num_streams,
2074                                  struct stream_struct **streams)
2075 {
2076         VFS_FIND(streaminfo);
2077         return handle->fns->streaminfo_fn(handle, fsp, fname, mem_ctx,
2078                                           num_streams, streams);
2079 }
2080
2081 int smb_vfs_call_get_real_filename(struct vfs_handle_struct *handle,
2082                                    const char *path, const char *name,
2083                                    TALLOC_CTX *mem_ctx, char **found_name)
2084 {
2085         VFS_FIND(get_real_filename);
2086         return handle->fns->get_real_filename_fn(handle, path, name, mem_ctx,
2087                                                  found_name);
2088 }
2089
2090 const char *smb_vfs_call_connectpath(struct vfs_handle_struct *handle,
2091                                      const char *filename)
2092 {
2093         VFS_FIND(connectpath);
2094         return handle->fns->connectpath_fn(handle, filename);
2095 }
2096
2097 bool smb_vfs_call_strict_lock(struct vfs_handle_struct *handle,
2098                               struct files_struct *fsp,
2099                               struct lock_struct *plock)
2100 {
2101         VFS_FIND(strict_lock);
2102         return handle->fns->strict_lock_fn(handle, fsp, plock);
2103 }
2104
2105 void smb_vfs_call_strict_unlock(struct vfs_handle_struct *handle,
2106                                 struct files_struct *fsp,
2107                                 struct lock_struct *plock)
2108 {
2109         VFS_FIND(strict_unlock);
2110         handle->fns->strict_unlock_fn(handle, fsp, plock);
2111 }
2112
2113 NTSTATUS smb_vfs_call_translate_name(struct vfs_handle_struct *handle,
2114                                      const char *name,
2115                                      enum vfs_translate_direction direction,
2116                                      TALLOC_CTX *mem_ctx,
2117                                      char **mapped_name)
2118 {
2119         VFS_FIND(translate_name);
2120         return handle->fns->translate_name_fn(handle, name, direction, mem_ctx,
2121                                               mapped_name);
2122 }
2123
2124 NTSTATUS smb_vfs_call_fsctl(struct vfs_handle_struct *handle,
2125                             struct files_struct *fsp,
2126                             TALLOC_CTX *ctx,
2127                             uint32_t function,
2128                             uint16_t req_flags,
2129                             const uint8_t *in_data,
2130                             uint32_t in_len,
2131                             uint8_t **out_data,
2132                             uint32_t max_out_len,
2133                             uint32_t *out_len)
2134 {
2135         VFS_FIND(fsctl);
2136         return handle->fns->fsctl_fn(handle, fsp, ctx, function, req_flags,
2137                                      in_data, in_len, out_data, max_out_len,
2138                                      out_len);
2139 }
2140
2141 struct tevent_req *smb_vfs_call_copy_chunk_send(struct vfs_handle_struct *handle,
2142                                                 TALLOC_CTX *mem_ctx,
2143                                                 struct tevent_context *ev,
2144                                                 struct files_struct *src_fsp,
2145                                                 off_t src_off,
2146                                                 struct files_struct *dest_fsp,
2147                                                 off_t dest_off,
2148                                                 off_t num)
2149 {
2150         VFS_FIND(copy_chunk_send);
2151         return handle->fns->copy_chunk_send_fn(handle, mem_ctx, ev, src_fsp,
2152                                                src_off, dest_fsp, dest_off, num);
2153 }
2154
2155 NTSTATUS smb_vfs_call_copy_chunk_recv(struct vfs_handle_struct *handle,
2156                                       struct tevent_req *req,
2157                                       off_t *copied)
2158 {
2159         VFS_FIND(copy_chunk_recv);
2160         return handle->fns->copy_chunk_recv_fn(handle, req, copied);
2161 }
2162
2163 NTSTATUS smb_vfs_call_get_compression(vfs_handle_struct *handle,
2164                                       TALLOC_CTX *mem_ctx,
2165                                       struct files_struct *fsp,
2166                                       struct smb_filename *smb_fname,
2167                                       uint16_t *_compression_fmt)
2168 {
2169         VFS_FIND(get_compression);
2170         return handle->fns->get_compression_fn(handle, mem_ctx, fsp, smb_fname,
2171                                                _compression_fmt);
2172 }
2173
2174 NTSTATUS smb_vfs_call_set_compression(vfs_handle_struct *handle,
2175                                       TALLOC_CTX *mem_ctx,
2176                                       struct files_struct *fsp,
2177                                       uint16_t compression_fmt)
2178 {
2179         VFS_FIND(set_compression);
2180         return handle->fns->set_compression_fn(handle, mem_ctx, fsp,
2181                                                compression_fmt);
2182 }
2183
2184 NTSTATUS smb_vfs_call_snap_check_path(vfs_handle_struct *handle,
2185                                       TALLOC_CTX *mem_ctx,
2186                                       const char *service_path,
2187                                       char **base_volume)
2188 {
2189         VFS_FIND(snap_check_path);
2190         return handle->fns->snap_check_path_fn(handle, mem_ctx, service_path,
2191                                                base_volume);
2192 }
2193
2194 NTSTATUS smb_vfs_call_snap_create(struct vfs_handle_struct *handle,
2195                                   TALLOC_CTX *mem_ctx,
2196                                   const char *base_volume,
2197                                   time_t *tstamp,
2198                                   bool rw,
2199                                   char **base_path,
2200                                   char **snap_path)
2201 {
2202         VFS_FIND(snap_create);
2203         return handle->fns->snap_create_fn(handle, mem_ctx, base_volume, tstamp,
2204                                            rw, base_path, snap_path);
2205 }
2206
2207 NTSTATUS smb_vfs_call_snap_delete(struct vfs_handle_struct *handle,
2208                                   TALLOC_CTX *mem_ctx,
2209                                   char *base_path,
2210                                   char *snap_path)
2211 {
2212         VFS_FIND(snap_delete);
2213         return handle->fns->snap_delete_fn(handle, mem_ctx, base_path,
2214                                            snap_path);
2215 }
2216
2217 NTSTATUS smb_vfs_call_fget_nt_acl(struct vfs_handle_struct *handle,
2218                                   struct files_struct *fsp,
2219                                   uint32_t security_info,
2220                                   TALLOC_CTX *mem_ctx,
2221                                   struct security_descriptor **ppdesc)
2222 {
2223         VFS_FIND(fget_nt_acl);
2224         return handle->fns->fget_nt_acl_fn(handle, fsp, security_info,
2225                                            mem_ctx, ppdesc);
2226 }
2227
2228 NTSTATUS smb_vfs_call_get_nt_acl(struct vfs_handle_struct *handle,
2229                                  const char *name,
2230                                  uint32_t security_info,
2231                                  TALLOC_CTX *mem_ctx,
2232                                  struct security_descriptor **ppdesc)
2233 {
2234         VFS_FIND(get_nt_acl);
2235         return handle->fns->get_nt_acl_fn(handle, name, security_info, mem_ctx, ppdesc);
2236 }
2237
2238 NTSTATUS smb_vfs_call_fset_nt_acl(struct vfs_handle_struct *handle,
2239                                   struct files_struct *fsp,
2240                                   uint32_t security_info_sent,
2241                                   const struct security_descriptor *psd)
2242 {
2243         VFS_FIND(fset_nt_acl);
2244         return handle->fns->fset_nt_acl_fn(handle, fsp, security_info_sent,
2245                                            psd);
2246 }
2247
2248 NTSTATUS smb_vfs_call_audit_file(struct vfs_handle_struct *handle,
2249                                  struct smb_filename *file,
2250                                  struct security_acl *sacl,
2251                                  uint32_t access_requested,
2252                                  uint32_t access_denied)
2253 {
2254         VFS_FIND(audit_file);
2255         return handle->fns->audit_file_fn(handle,
2256                                           file,
2257                                           sacl,
2258                                           access_requested,
2259                                           access_denied);
2260 }
2261
2262 int smb_vfs_call_chmod_acl(struct vfs_handle_struct *handle, const char *name,
2263                            mode_t mode)
2264 {
2265         VFS_FIND(chmod_acl);
2266         return handle->fns->chmod_acl_fn(handle, name, mode);
2267 }
2268
2269 int smb_vfs_call_fchmod_acl(struct vfs_handle_struct *handle,
2270                             struct files_struct *fsp, mode_t mode)
2271 {
2272         VFS_FIND(fchmod_acl);
2273         return handle->fns->fchmod_acl_fn(handle, fsp, mode);
2274 }
2275
2276 SMB_ACL_T smb_vfs_call_sys_acl_get_file(struct vfs_handle_struct *handle,
2277                                         const char *path_p,
2278                                         SMB_ACL_TYPE_T type,
2279                                         TALLOC_CTX *mem_ctx)
2280 {
2281         VFS_FIND(sys_acl_get_file);
2282         return handle->fns->sys_acl_get_file_fn(handle, path_p, type, mem_ctx);
2283 }
2284
2285 SMB_ACL_T smb_vfs_call_sys_acl_get_fd(struct vfs_handle_struct *handle,
2286                                       struct files_struct *fsp,
2287                                       TALLOC_CTX *mem_ctx)
2288 {
2289         VFS_FIND(sys_acl_get_fd);
2290         return handle->fns->sys_acl_get_fd_fn(handle, fsp, mem_ctx);
2291 }
2292
2293 int smb_vfs_call_sys_acl_blob_get_file(struct vfs_handle_struct *handle,
2294                                        const char *path_p,
2295                                        TALLOC_CTX *mem_ctx,
2296                                        char **blob_description,
2297                                        DATA_BLOB *blob)
2298 {
2299         VFS_FIND(sys_acl_blob_get_file);
2300         return handle->fns->sys_acl_blob_get_file_fn(handle, path_p, mem_ctx, blob_description, blob);
2301 }
2302
2303 int smb_vfs_call_sys_acl_blob_get_fd(struct vfs_handle_struct *handle,
2304                                      struct files_struct *fsp,
2305                                      TALLOC_CTX *mem_ctx,
2306                                      char **blob_description,
2307                                      DATA_BLOB *blob)
2308 {
2309         VFS_FIND(sys_acl_blob_get_fd);
2310         return handle->fns->sys_acl_blob_get_fd_fn(handle, fsp, mem_ctx, blob_description, blob);
2311 }
2312
2313 int smb_vfs_call_sys_acl_set_file(struct vfs_handle_struct *handle,
2314                                   const char *name, SMB_ACL_TYPE_T acltype,
2315                                   SMB_ACL_T theacl)
2316 {
2317         VFS_FIND(sys_acl_set_file);
2318         return handle->fns->sys_acl_set_file_fn(handle, name, acltype, theacl);
2319 }
2320
2321 int smb_vfs_call_sys_acl_set_fd(struct vfs_handle_struct *handle,
2322                                 struct files_struct *fsp, SMB_ACL_T theacl)
2323 {
2324         VFS_FIND(sys_acl_set_fd);
2325         return handle->fns->sys_acl_set_fd_fn(handle, fsp, theacl);
2326 }
2327
2328 int smb_vfs_call_sys_acl_delete_def_file(struct vfs_handle_struct *handle,
2329                                          const char *path)
2330 {
2331         VFS_FIND(sys_acl_delete_def_file);
2332         return handle->fns->sys_acl_delete_def_file_fn(handle, path);
2333 }
2334
2335 ssize_t smb_vfs_call_getxattr(struct vfs_handle_struct *handle,
2336                               const char *path, const char *name, void *value,
2337                               size_t size)
2338 {
2339         VFS_FIND(getxattr);
2340         return handle->fns->getxattr_fn(handle, path, name, value, size);
2341 }
2342
2343 ssize_t smb_vfs_call_fgetxattr(struct vfs_handle_struct *handle,
2344                                struct files_struct *fsp, const char *name,
2345                                void *value, size_t size)
2346 {
2347         VFS_FIND(fgetxattr);
2348         return handle->fns->fgetxattr_fn(handle, fsp, name, value, size);
2349 }
2350
2351 ssize_t smb_vfs_call_listxattr(struct vfs_handle_struct *handle,
2352                                const char *path, char *list, size_t size)
2353 {
2354         VFS_FIND(listxattr);
2355         return handle->fns->listxattr_fn(handle, path, list, size);
2356 }
2357
2358 ssize_t smb_vfs_call_flistxattr(struct vfs_handle_struct *handle,
2359                                 struct files_struct *fsp, char *list,
2360                                 size_t size)
2361 {
2362         VFS_FIND(flistxattr);
2363         return handle->fns->flistxattr_fn(handle, fsp, list, size);
2364 }
2365
2366 int smb_vfs_call_removexattr(struct vfs_handle_struct *handle,
2367                              const char *path, const char *name)
2368 {
2369         VFS_FIND(removexattr);
2370         return handle->fns->removexattr_fn(handle, path, name);
2371 }
2372
2373 int smb_vfs_call_fremovexattr(struct vfs_handle_struct *handle,
2374                               struct files_struct *fsp, const char *name)
2375 {
2376         VFS_FIND(fremovexattr);
2377         return handle->fns->fremovexattr_fn(handle, fsp, name);
2378 }
2379
2380 int smb_vfs_call_setxattr(struct vfs_handle_struct *handle, const char *path,
2381                           const char *name, const void *value, size_t size,
2382                           int flags)
2383 {
2384         VFS_FIND(setxattr);
2385         return handle->fns->setxattr_fn(handle, path, name, value, size, flags);
2386 }
2387
2388 int smb_vfs_call_fsetxattr(struct vfs_handle_struct *handle,
2389                            struct files_struct *fsp, const char *name,
2390                            const void *value, size_t size, int flags)
2391 {
2392         VFS_FIND(fsetxattr);
2393         return handle->fns->fsetxattr_fn(handle, fsp, name, value, size, flags);
2394 }
2395
2396 bool smb_vfs_call_aio_force(struct vfs_handle_struct *handle,
2397                             struct files_struct *fsp)
2398 {
2399         VFS_FIND(aio_force);
2400         return handle->fns->aio_force_fn(handle, fsp);
2401 }
2402
2403 bool smb_vfs_call_is_offline(struct vfs_handle_struct *handle,
2404                              const struct smb_filename *fname,
2405                              SMB_STRUCT_STAT *sbuf)
2406 {
2407         VFS_FIND(is_offline);
2408         return handle->fns->is_offline_fn(handle, fname, sbuf);
2409 }
2410
2411 int smb_vfs_call_set_offline(struct vfs_handle_struct *handle,
2412                              const struct smb_filename *fname)
2413 {
2414         VFS_FIND(set_offline);
2415         return handle->fns->set_offline_fn(handle, fname);
2416 }
2417
2418 NTSTATUS smb_vfs_call_durable_cookie(struct vfs_handle_struct *handle,
2419                                      struct files_struct *fsp,
2420                                      TALLOC_CTX *mem_ctx,
2421                                      DATA_BLOB *cookie)
2422 {
2423         VFS_FIND(durable_cookie);
2424         return handle->fns->durable_cookie_fn(handle, fsp, mem_ctx, cookie);
2425 }
2426
2427 NTSTATUS smb_vfs_call_durable_disconnect(struct vfs_handle_struct *handle,
2428                                          struct files_struct *fsp,
2429                                          const DATA_BLOB old_cookie,
2430                                          TALLOC_CTX *mem_ctx,
2431                                          DATA_BLOB *new_cookie)
2432 {
2433         VFS_FIND(durable_disconnect);
2434         return handle->fns->durable_disconnect_fn(handle, fsp, old_cookie,
2435                                                   mem_ctx, new_cookie);
2436 }
2437
2438 NTSTATUS smb_vfs_call_durable_reconnect(struct vfs_handle_struct *handle,
2439                                         struct smb_request *smb1req,
2440                                         struct smbXsrv_open *op,
2441                                         const DATA_BLOB old_cookie,
2442                                         TALLOC_CTX *mem_ctx,
2443                                         struct files_struct **fsp,
2444                                         DATA_BLOB *new_cookie)
2445 {
2446         VFS_FIND(durable_reconnect);
2447         return handle->fns->durable_reconnect_fn(handle, smb1req, op,
2448                                                  old_cookie, mem_ctx, fsp,
2449                                                  new_cookie);
2450 }
2451
2452 NTSTATUS smb_vfs_call_readdir_attr(struct vfs_handle_struct *handle,
2453                                    const struct smb_filename *fname,
2454                                    TALLOC_CTX *mem_ctx,
2455                                    struct readdir_attr_data **attr_data)
2456 {
2457         VFS_FIND(readdir_attr);
2458         return handle->fns->readdir_attr_fn(handle, fname, mem_ctx, attr_data);
2459 }