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(NULL);
 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  * Ensure this module catches all VFS functions.
 321  */
 322 #ifdef DEVELOPER
 323 void smb_vfs_assert_all_fns(const struct vfs_fn_pointers* fns,
 324                             const char *module)
 325 {
 326         bool missing_fn = false;
 327         unsigned int idx;
 328         const uintptr_t *end = (const uintptr_t *)(fns + 1);
 329
 330         for (idx = 0; ((const uintptr_t *)fns + idx) < end; idx++) {
 331                 if (*((const uintptr_t *)fns + idx) == 0) {
 332                         DBG_ERR("VFS function at index %d not implemented "
 333                                 "in module %s\n", idx, module);
 334                         missing_fn = true;
 335                 }
 336         }
 337
 338         if (missing_fn) {
 339                 smb_panic("Required VFS function not implemented in module.\n");
 340         }
 341 }
 342 #else
 343 void smb_vfs_assert_all_fns(const struct vfs_fn_pointers* fns,
 344                             const char *module)
 345 {
 346 }
 347 #endif
 348
 349 /*****************************************************************
 350  Generic VFS init.
 351 ******************************************************************/
 352
 353 bool smbd_vfs_init(connection_struct *conn)
 354 {
 355         const char **vfs_objects;
 356         unsigned int i = 0;
 357         int j = 0;
 358
 359         /* Normal share - initialise with disk access functions */
 360         vfs_init_default(conn);
 361
 362         /* No need to load vfs modules for printer connections */
 363         if (conn->printer) {
 364                 return True;
 365         }
 366
 367         vfs_objects = lp_vfs_objects(SNUM(conn));
 368
 369         /* Override VFS functions if 'vfs object' was not specified*/
 370         if (!vfs_objects || !vfs_objects[0])
 371                 return True;
 372
 373         for (i=0; vfs_objects[i] ;) {
 374                 i++;
 375         }
 376
 377         for (j=i-1; j >= 0; j--) {
 378                 if (!vfs_init_custom(conn, vfs_objects[j])) {
 379                         DEBUG(0, ("smbd_vfs_init: vfs_init_custom failed for %s\n", vfs_objects[j]));
 380                         return False;
 381                 }
 382         }
 383         return True;
 384 }
 385
 386 /*******************************************************************
 387  Check if a file exists in the vfs.
 388 ********************************************************************/
 389
 390 NTSTATUS vfs_file_exist(connection_struct *conn, struct smb_filename *smb_fname)
 391 {
 392         /* Only return OK if stat was successful and S_ISREG */
 393         if ((SMB_VFS_STAT(conn, smb_fname) != -1) &&
 394             S_ISREG(smb_fname->st.st_ex_mode)) {
 395                 return NT_STATUS_OK;
 396         }
 397
 398         return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 399 }
 400
 401 /****************************************************************************
 402  Read data from fsp on the vfs. (note: EINTR re-read differs from vfs_write_data)
 403 ****************************************************************************/
 404
 405 ssize_t vfs_read_data(files_struct *fsp, char *buf, size_t byte_count)
 406 {
 407         size_t total=0;
 408
 409         while (total < byte_count)
 410         {
 411                 ssize_t ret = SMB_VFS_READ(fsp, buf + total,
 412                                            byte_count - total);
 413
 414                 if (ret == 0) return total;
 415                 if (ret == -1) {
 416                         if (errno == EINTR)
 417                                 continue;
 418                         else
 419                                 return -1;
 420                 }
 421                 total += ret;
 422         }
 423         return (ssize_t)total;
 424 }
 425
 426 /****************************************************************************
 427  Write data to a fd on the vfs.
 428 ****************************************************************************/
 429
 430 ssize_t vfs_write_data(struct smb_request *req,
 431                         files_struct *fsp,
 432                         const char *buffer,
 433                         size_t N)
 434 {
 435         size_t total=0;
 436         ssize_t ret;
 437
 438         if (req && req->unread_bytes) {
 439                 int sockfd = req->xconn->transport.sock;
 440                 int old_flags;
 441                 SMB_ASSERT(req->unread_bytes == N);
 442                 /* VFS_RECVFILE must drain the socket
 443                  * before returning. */
 444                 req->unread_bytes = 0;
 445                 /* Ensure the socket is blocking. */
 446                 old_flags = fcntl(sockfd, F_GETFL, 0);
 447                 if (set_blocking(sockfd, true) == -1) {
 448                         return (ssize_t)-1;
 449                 }
 450                 ret = SMB_VFS_RECVFILE(sockfd,
 451                                         fsp,
 452                                         (off_t)-1,
 453                                         N);
 454                 if (fcntl(sockfd, F_SETFL, old_flags) == -1) {
 455                         return (ssize_t)-1;
 456                 }
 457                 return ret;
 458         }
 459
 460         while (total < N) {
 461                 ret = SMB_VFS_WRITE(fsp, buffer + total, N - total);
 462
 463                 if (ret == -1)
 464                         return -1;
 465                 if (ret == 0)
 466                         return total;
 467
 468                 total += ret;
 469         }
 470         return (ssize_t)total;
 471 }
 472
 473 ssize_t vfs_pwrite_data(struct smb_request *req,
 474                         files_struct *fsp,
 475                         const char *buffer,
 476                         size_t N,
 477                         off_t offset)
 478 {
 479         size_t total=0;
 480         ssize_t ret;
 481
 482         if (req && req->unread_bytes) {
 483                 int sockfd = req->xconn->transport.sock;
 484                 SMB_ASSERT(req->unread_bytes == N);
 485                 /* VFS_RECVFILE must drain the socket
 486                  * before returning. */
 487                 req->unread_bytes = 0;
 488                 /*
 489                  * Leave the socket non-blocking and
 490                  * use SMB_VFS_RECVFILE. If it returns
 491                  * EAGAIN || EWOULDBLOCK temporarily set
 492                  * the socket blocking and retry
 493                  * the RECVFILE.
 494                  */
 495                 while (total < N) {
 496                         ret = SMB_VFS_RECVFILE(sockfd,
 497                                                 fsp,
 498                                                 offset + total,
 499                                                 N - total);
 500                         if (ret == 0 || (ret == -1 &&
 501                                          (errno == EAGAIN ||
 502                                           errno == EWOULDBLOCK))) {
 503                                 int old_flags;
 504                                 /* Ensure the socket is blocking. */
 505                                 old_flags = fcntl(sockfd, F_GETFL, 0);
 506                                 if (set_blocking(sockfd, true) == -1) {
 507                                         return (ssize_t)-1;
 508                                 }
 509                                 ret = SMB_VFS_RECVFILE(sockfd,
 510                                                         fsp,
 511                                                         offset + total,
 512                                                         N - total);
 513                                 if (fcntl(sockfd, F_SETFL, old_flags) == -1) {
 514                                         return (ssize_t)-1;
 515                                 }
 516                                 if (ret == -1) {
 517                                         return (ssize_t)-1;
 518                                 }
 519                                 total += ret;
 520                                 return (ssize_t)total;
 521                         }
 522                         /* Any other error case. */
 523                         if (ret == -1) {
 524                                 return ret;
 525                         }
 526                         total += ret;
 527                 }
 528                 return (ssize_t)total;
 529         }
 530
 531         while (total < N) {
 532                 ret = SMB_VFS_PWRITE(fsp, buffer + total, N - total,
 533                                      offset + total);
 534
 535                 if (ret == -1)
 536                         return -1;
 537                 if (ret == 0)
 538                         return total;
 539
 540                 total += ret;
 541         }
 542         return (ssize_t)total;
 543 }
 544 /****************************************************************************
 545  An allocate file space call using the vfs interface.
 546  Allocates space for a file from a filedescriptor.
 547  Returns 0 on success, -1 on failure.
 548 ****************************************************************************/
 549
 550 int vfs_allocate_file_space(files_struct *fsp, uint64_t len)
 551 {
 552         int ret;
 553         connection_struct *conn = fsp->conn;
 554         uint64_t space_avail;
 555         uint64_t bsize,dfree,dsize;
 556         NTSTATUS status;
 557
 558         /*
 559          * Actually try and commit the space on disk....
 560          */
 561
 562         DEBUG(10,("vfs_allocate_file_space: file %s, len %.0f\n",
 563                   fsp_str_dbg(fsp), (double)len));
 564
 565         if (((off_t)len) < 0) {
 566                 DEBUG(0,("vfs_allocate_file_space: %s negative len "
 567                          "requested.\n", fsp_str_dbg(fsp)));
 568                 errno = EINVAL;
 569                 return -1;
 570         }
 571
 572         status = vfs_stat_fsp(fsp);
 573         if (!NT_STATUS_IS_OK(status)) {
 574                 return -1;
 575         }
 576
 577         if (len == (uint64_t)fsp->fsp_name->st.st_ex_size)
 578                 return 0;
 579
 580         if (len < (uint64_t)fsp->fsp_name->st.st_ex_size) {
 581                 /* Shrink - use ftruncate. */
 582
 583                 DEBUG(10,("vfs_allocate_file_space: file %s, shrink. Current "
 584                           "size %.0f\n", fsp_str_dbg(fsp),
 585                           (double)fsp->fsp_name->st.st_ex_size));
 586
 587                 contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_ALLOC_SHRINK);
 588
 589                 flush_write_cache(fsp, SAMBA_SIZECHANGE_FLUSH);
 590                 if ((ret = SMB_VFS_FTRUNCATE(fsp, (off_t)len)) != -1) {
 591                         set_filelen_write_cache(fsp, len);
 592                 }
 593
 594                 contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_ALLOC_SHRINK);
 595
 596                 return ret;
 597         }
 598
 599         /* Grow - we need to test if we have enough space. */
 600
 601         contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_ALLOC_GROW);
 602
 603         if (lp_strict_allocate(SNUM(fsp->conn))) {
 604                 /* See if we have a syscall that will allocate beyond
 605                    end-of-file without changing EOF. */
 606                 ret = SMB_VFS_FALLOCATE(fsp, VFS_FALLOCATE_FL_KEEP_SIZE,
 607                                         0, len);
 608         } else {
 609                 ret = 0;
 610         }
 611
 612         contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_ALLOC_GROW);
 613
 614         if (ret == 0) {
 615                 /* We changed the allocation size on disk, but not
 616                    EOF - exactly as required. We're done ! */
 617                 return 0;
 618         }
 619
 620         if (ret == -1 && errno == ENOSPC) {
 621                 return -1;
 622         }
 623
 624         len -= fsp->fsp_name->st.st_ex_size;
 625         len /= 1024; /* Len is now number of 1k blocks needed. */
 626         space_avail =
 627             get_dfree_info(conn, fsp->fsp_name, &bsize, &dfree, &dsize);
 628         if (space_avail == (uint64_t)-1) {
 629                 return -1;
 630         }
 631
 632         DEBUG(10,("vfs_allocate_file_space: file %s, grow. Current size %.0f, "
 633                   "needed blocks = %.0f, space avail = %.0f\n",
 634                   fsp_str_dbg(fsp), (double)fsp->fsp_name->st.st_ex_size, (double)len,
 635                   (double)space_avail));
 636
 637         if (len > space_avail) {
 638                 errno = ENOSPC;
 639                 return -1;
 640         }
 641
 642         return 0;
 643 }
 644
 645 /****************************************************************************
 646  A vfs set_filelen call.
 647  set the length of a file from a filedescriptor.
 648  Returns 0 on success, -1 on failure.
 649 ****************************************************************************/
 650
 651 int vfs_set_filelen(files_struct *fsp, off_t len)
 652 {
 653         int ret;
 654
 655         contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_SET_FILE_LEN);
 656
 657         DEBUG(10,("vfs_set_filelen: ftruncate %s to len %.0f\n",
 658                   fsp_str_dbg(fsp), (double)len));
 659         flush_write_cache(fsp, SAMBA_SIZECHANGE_FLUSH);
 660         if ((ret = SMB_VFS_FTRUNCATE(fsp, len)) != -1) {
 661                 set_filelen_write_cache(fsp, len);
 662                 notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
 663                              FILE_NOTIFY_CHANGE_SIZE
 664                              | FILE_NOTIFY_CHANGE_ATTRIBUTES,
 665                              fsp->fsp_name->base_name);
 666         }
 667
 668         contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_SET_FILE_LEN);
 669
 670         return ret;
 671 }
 672
 673 /****************************************************************************
 674  A slow version of fallocate. Fallback code if SMB_VFS_FALLOCATE
 675  fails. Needs to be outside of the default version of SMB_VFS_FALLOCATE
 676  as this is also called from the default SMB_VFS_FTRUNCATE code.
 677  Always extends the file size.
 678  Returns 0 on success, -1 on failure.
 679 ****************************************************************************/
 680
 681 #define SPARSE_BUF_WRITE_SIZE (32*1024)
 682
 683 int vfs_slow_fallocate(files_struct *fsp, off_t offset, off_t len)
 684 {
 685         ssize_t pwrite_ret;
 686         size_t total = 0;
 687
 688         if (!sparse_buf) {
 689                 sparse_buf = SMB_CALLOC_ARRAY(char, SPARSE_BUF_WRITE_SIZE);
 690                 if (!sparse_buf) {
 691                         errno = ENOMEM;
 692                         return -1;
 693                 }
 694         }
 695
 696         while (total < len) {
 697                 size_t curr_write_size = MIN(SPARSE_BUF_WRITE_SIZE, (len - total));
 698
 699                 pwrite_ret = SMB_VFS_PWRITE(fsp, sparse_buf, curr_write_size, offset + total);
 700                 if (pwrite_ret == -1) {
 701                         int saved_errno = errno;
 702                         DEBUG(10,("vfs_slow_fallocate: SMB_VFS_PWRITE for file "
 703                                   "%s failed with error %s\n",
 704                                   fsp_str_dbg(fsp), strerror(saved_errno)));
 705                         errno = saved_errno;
 706                         return -1;
 707                 }
 708                 total += pwrite_ret;
 709         }
 710
 711         return 0;
 712 }
 713
 714 /****************************************************************************
 715  A vfs fill sparse call.
 716  Writes zeros from the end of file to len, if len is greater than EOF.
 717  Used only by strict_sync.
 718  Returns 0 on success, -1 on failure.
 719 ****************************************************************************/
 720
 721 int vfs_fill_sparse(files_struct *fsp, off_t len)
 722 {
 723         int ret;
 724         NTSTATUS status;
 725         off_t offset;
 726         size_t num_to_write;
 727
 728         status = vfs_stat_fsp(fsp);
 729         if (!NT_STATUS_IS_OK(status)) {
 730                 return -1;
 731         }
 732
 733         if (len <= fsp->fsp_name->st.st_ex_size) {
 734                 return 0;
 735         }
 736
 737 #ifdef S_ISFIFO
 738         if (S_ISFIFO(fsp->fsp_name->st.st_ex_mode)) {
 739                 return 0;
 740         }
 741 #endif
 742
 743         DEBUG(10,("vfs_fill_sparse: write zeros in file %s from len %.0f to "
 744                   "len %.0f (%.0f bytes)\n", fsp_str_dbg(fsp),
 745                   (double)fsp->fsp_name->st.st_ex_size, (double)len,
 746                   (double)(len - fsp->fsp_name->st.st_ex_size)));
 747
 748         contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_FILL_SPARSE);
 749
 750         flush_write_cache(fsp, SAMBA_SIZECHANGE_FLUSH);
 751
 752         offset = fsp->fsp_name->st.st_ex_size;
 753         num_to_write = len - fsp->fsp_name->st.st_ex_size;
 754
 755         /* Only do this on non-stream file handles. */
 756         if (fsp->base_fsp == NULL) {
 757                 /* for allocation try fallocate first. This can fail on some
 758                  * platforms e.g. when the filesystem doesn't support it and no
 759                  * emulation is being done by the libc (like on AIX with JFS1). In that
 760                  * case we do our own emulation. fallocate implementations can
 761                  * return ENOTSUP or EINVAL in cases like that. */
 762                 ret = SMB_VFS_FALLOCATE(fsp, 0, offset, num_to_write);
 763                 if (ret == -1 && errno == ENOSPC) {
 764                         goto out;
 765                 }
 766                 if (ret == 0) {
 767                         goto out;
 768                 }
 769                 DEBUG(10,("vfs_fill_sparse: SMB_VFS_FALLOCATE failed with "
 770                         "error %d. Falling back to slow manual allocation\n", ret));
 771         }
 772
 773         ret = vfs_slow_fallocate(fsp, offset, num_to_write);
 774
 775  out:
 776
 777         if (ret == 0) {
 778                 set_filelen_write_cache(fsp, len);
 779         }
 780
 781         contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_FILL_SPARSE);
 782         return ret;
 783 }
 784
 785 /****************************************************************************
 786  Transfer some data (n bytes) between two file_struct's.
 787 ****************************************************************************/
 788
 789 static ssize_t vfs_pread_fn(void *file, void *buf, size_t len, off_t offset)
 790 {
 791         struct files_struct *fsp = (struct files_struct *)file;
 792
 793         return SMB_VFS_PREAD(fsp, buf, len, offset);
 794 }
 795
 796 static ssize_t vfs_pwrite_fn(void *file, const void *buf, size_t len, off_t offset)
 797 {
 798         struct files_struct *fsp = (struct files_struct *)file;
 799
 800         return SMB_VFS_PWRITE(fsp, buf, len, offset);
 801 }
 802
 803 off_t vfs_transfer_file(files_struct *in, files_struct *out, off_t n)
 804 {
 805         return transfer_file_internal((void *)in, (void *)out, n,
 806                                       vfs_pread_fn, vfs_pwrite_fn);
 807 }
 808
 809 /*******************************************************************
 810  A vfs_readdir wrapper which just returns the file name.
 811 ********************************************************************/
 812
 813 const char *vfs_readdirname(connection_struct *conn, void *p,
 814                             SMB_STRUCT_STAT *sbuf, char **talloced)
 815 {
 816         struct dirent *ptr= NULL;
 817         const char *dname;
 818         char *translated;
 819         NTSTATUS status;
 820
 821         if (!p)
 822                 return(NULL);
 823
 824         ptr = SMB_VFS_READDIR(conn, (DIR *)p, sbuf);
 825         if (!ptr)
 826                 return(NULL);
 827
 828         dname = ptr->d_name;
 829
 830
 831 #ifdef NEXT2
 832         if (telldir(p) < 0)
 833                 return(NULL);
 834 #endif
 835
 836 #ifdef HAVE_BROKEN_READDIR_NAME
 837         /* using /usr/ucb/cc is BAD */
 838         dname = dname - 2;
 839 #endif
 840
 841         status = SMB_VFS_TRANSLATE_NAME(conn, dname, vfs_translate_to_windows,
 842                                         talloc_tos(), &translated);
 843         if (NT_STATUS_EQUAL(status, NT_STATUS_NONE_MAPPED)) {
 844                 *talloced = NULL;
 845                 return dname;
 846         }
 847         *talloced = translated;
 848         if (!NT_STATUS_IS_OK(status)) {
 849                 return NULL;
 850         }
 851         return translated;
 852 }
 853
 854 /*******************************************************************
 855  A wrapper for vfs_chdir().
 856 ********************************************************************/
 857
 858 int vfs_ChDir(connection_struct *conn, const struct smb_filename *smb_fname)
 859 {
 860         int ret;
 861         int saved_errno = 0;
 862         struct smb_filename *saved_cwd = NULL;
 863
 864         if (!LastDir) {
 865                 LastDir = SMB_STRDUP("");
 866         }
 867
 868         if (ISDOT(smb_fname->base_name)) {
 869                 return 0;
 870         }
 871
 872         if (*smb_fname->base_name == '/' &&
 873                         strcsequal(LastDir,smb_fname->base_name)) {
 874                 return 0;
 875         }
 876
 877         if (conn->cwd_fname != NULL) {
 878                 /*
 879                  * Save off where we are in case we need to return
 880                  * on vfs_GetWd() failure after successful SMB_VFS_CHDIR().
 881                  */
 882                 saved_cwd = cp_smb_filename(conn, conn->cwd_fname);
 883                 if (saved_cwd == NULL) {
 884                         return -1;
 885                 }
 886         }
 887
 888         DEBUG(4,("vfs_ChDir to %s\n", smb_fname->base_name));
 889
 890         ret = SMB_VFS_CHDIR(conn, smb_fname);
 891         if (ret != 0) {
 892                 saved_errno = errno;
 893                 TALLOC_FREE(saved_cwd);
 894                 errno = saved_errno;
 895                 return -1;
 896         }
 897
 898         /*
 899          * Always replace conn->cwd_fname. We
 900          * don't know if it's been modified by
 901          * VFS modules in the stack.
 902          */
 903
 904         /* conn cache. */
 905         TALLOC_FREE(conn->cwd_fname);
 906         conn->cwd_fname = vfs_GetWd(conn, conn);
 907         if (conn->cwd_fname == NULL) {
 908                 /*
 909                  * vfs_GetWd() failed.
 910                  * We must be able to read cwd.
 911                  * Return to original directory
 912                  * and return -1.
 913                  */
 914                 saved_errno = errno;
 915
 916                 if (saved_cwd == NULL) {
 917                         /*
 918                          * Failed on the very first chdir()+getwd()
 919                          * for this connection. We can't
 920                          * continue.
 921                          */
 922                         smb_panic("conn->cwd getwd failed\n");
 923                         /* NOTREACHED */
 924                         return -1;
 925                 }
 926
 927                 /* Return to the previous $cwd. */
 928                 ret = SMB_VFS_CHDIR(conn, saved_cwd);
 929                 if (ret != 0) {
 930                         smb_panic("conn->cwd getwd failed\n");
 931                         /* NOTREACHED */
 932                         return -1;
 933                 }
 934                 /* Restore original conn->cwd_fname. */
 935                 conn->cwd_fname = saved_cwd;
 936                 errno = saved_errno;
 937                 /* And fail the chdir(). */
 938                 return -1;
 939         }
 940
 941         /* vfs_GetWd() succeeded. */
 942         /* Replace global cache. */
 943         SAFE_FREE(LastDir);
 944         LastDir = SMB_STRDUP(smb_fname->base_name);
 945
 946         DEBUG(4,("vfs_ChDir got %s\n", conn->cwd_fname->base_name));
 947
 948         TALLOC_FREE(saved_cwd);
 949         if (saved_errno != 0) {
 950                 errno = saved_errno;
 951         }
 952         return ret;
 953 }
 954
 955 /*******************************************************************
 956  Return the absolute current directory path - given a UNIX pathname.
 957  Note that this path is returned in DOS format, not UNIX
 958  format. Note this can be called with conn == NULL.
 959 ********************************************************************/
 960
 961 struct smb_filename *vfs_GetWd(TALLOC_CTX *ctx, connection_struct *conn)
 962 {
 963         struct smb_filename *current_dir_fname = NULL;
 964         struct file_id key;
 965         struct smb_filename *smb_fname_dot = NULL;
 966         struct smb_filename *smb_fname_full = NULL;
 967         struct smb_filename *result = NULL;
 968
 969         if (!lp_getwd_cache()) {
 970                 goto nocache;
 971         }
 972
 973         smb_fname_dot = synthetic_smb_fname(ctx, ".", NULL, NULL, 0);
 974         if (smb_fname_dot == NULL) {
 975                 errno = ENOMEM;
 976                 goto out;
 977         }
 978
 979         if (SMB_VFS_STAT(conn, smb_fname_dot) == -1) {
 980                 /*
 981                  * Known to fail for root: the directory may be NFS-mounted
 982                  * and exported with root_squash (so has no root access).
 983                  */
 984                 DEBUG(1,("vfs_GetWd: couldn't stat \".\" error %s "
 985                          "(NFS problem ?)\n", strerror(errno) ));
 986                 goto nocache;
 987         }
 988
 989         key = vfs_file_id_from_sbuf(conn, &smb_fname_dot->st);
 990
 991         smb_fname_full = (struct smb_filename *)memcache_lookup_talloc(
 992                                         smbd_memcache(),
 993                                         GETWD_CACHE,
 994                                         data_blob_const(&key, sizeof(key)));
 995
 996         if (smb_fname_full == NULL) {
 997                 goto nocache;
 998         }
 999
1000         if ((SMB_VFS_STAT(conn, smb_fname_full) == 0) &&
1001             (smb_fname_dot->st.st_ex_dev == smb_fname_full->st.st_ex_dev) &&
1002             (smb_fname_dot->st.st_ex_ino == smb_fname_full->st.st_ex_ino) &&
1003             (S_ISDIR(smb_fname_dot->st.st_ex_mode))) {
1004                 /*
1005                  * Ok, we're done
1006                  * Note: smb_fname_full is owned by smbd_memcache()
1007                  * so we must make a copy to return.
1008                  */
1009                 result = cp_smb_filename(ctx, smb_fname_full);
1010                 if (result == NULL) {
1011                         errno = ENOMEM;
1012                 }
1013                 goto out;
1014         }
1015
1016  nocache:
1017
1018         /*
1019          * We don't have the information to hand so rely on traditional
1020          * methods. The very slow getcwd, which spawns a process on some
1021          * systems, or the not quite so bad getwd.
1022          */
1023
1024         current_dir_fname = SMB_VFS_GETWD(conn, ctx);
1025         if (current_dir_fname == NULL) {
1026                 DEBUG(0, ("vfs_GetWd: SMB_VFS_GETWD call failed: %s\n",
1027                           strerror(errno)));
1028                 goto out;
1029         }
1030
1031         if (lp_getwd_cache() && VALID_STAT(smb_fname_dot->st)) {
1032                 key = vfs_file_id_from_sbuf(conn, &smb_fname_dot->st);
1033
1034                 /*
1035                  * smbd_memcache() will own current_dir_fname after the
1036                  * memcache_add_talloc call, so we must make
1037                  * a copy on ctx to return.
1038                  */
1039                 result = cp_smb_filename(ctx, current_dir_fname);
1040                 if (result == NULL) {
1041                         errno = ENOMEM;
1042                 }
1043
1044                 /*
1045                  * Ensure the memory going into the cache
1046                  * doesn't have a destructor so it can be
1047                  * cleanly freed.
1048                  */
1049                 talloc_set_destructor(current_dir_fname, NULL);
1050
1051                 memcache_add_talloc(smbd_memcache(),
1052                                 GETWD_CACHE,
1053                                 data_blob_const(&key, sizeof(key)),
1054                                 &current_dir_fname);
1055                 /* current_dir_fname is now == NULL here. */
1056         } else {
1057                 /* current_dir_fname is already allocated on ctx. */
1058                 result = current_dir_fname;
1059         }
1060
1061  out:
1062         TALLOC_FREE(smb_fname_dot);
1063         /*
1064          * Don't free current_dir_fname here. It's either been moved
1065          * to the memcache or is being returned in result.
1066          */
1067         return result;
1068 }
1069
1070 /*******************************************************************
1071  Reduce a file name, removing .. elements and checking that
1072  it is below dir in the heirachy. This uses realpath.
1073  This function must run as root, and will return names
1074  and valid stat structs that can be checked on open.
1075 ********************************************************************/
1076
1077 NTSTATUS check_reduced_name_with_privilege(connection_struct *conn,
1078                         const struct smb_filename *smb_fname,
1079                         struct smb_request *smbreq)
1080 {
1081         NTSTATUS status;
1082         TALLOC_CTX *ctx = talloc_tos();
1083         const char *conn_rootdir;
1084         size_t rootdir_len;
1085         char *dir_name = NULL;
1086         char *resolved_name = NULL;
1087         const char *last_component = NULL;
1088         struct smb_filename *resolved_fname = NULL;
1089         struct smb_filename *saved_dir_fname = NULL;
1090         struct smb_filename *smb_fname_cwd = NULL;
1091         struct privilege_paths *priv_paths = NULL;
1092         int ret;
1093
1094         DEBUG(3,("check_reduced_name_with_privilege [%s] [%s]\n",
1095                         smb_fname->base_name,
1096                         conn->connectpath));
1097
1098
1099         priv_paths = talloc_zero(smbreq, struct privilege_paths);
1100         if (!priv_paths) {
1101                 status = NT_STATUS_NO_MEMORY;
1102                 goto err;
1103         }
1104
1105         if (!parent_dirname(ctx, smb_fname->base_name,
1106                         &dir_name, &last_component)) {
1107                 status = NT_STATUS_NO_MEMORY;
1108                 goto err;
1109         }
1110
1111         priv_paths->parent_name.base_name = talloc_strdup(priv_paths, dir_name);
1112         priv_paths->file_name.base_name = talloc_strdup(priv_paths, last_component);
1113
1114         if (priv_paths->parent_name.base_name == NULL ||
1115                         priv_paths->file_name.base_name == NULL) {
1116                 status = NT_STATUS_NO_MEMORY;
1117                 goto err;
1118         }
1119
1120         if (SMB_VFS_STAT(conn, &priv_paths->parent_name) != 0) {
1121                 status = map_nt_error_from_unix(errno);
1122                 goto err;
1123         }
1124         /* Remember where we were. */
1125         saved_dir_fname = vfs_GetWd(ctx, conn);
1126         if (!saved_dir_fname) {
1127                 status = map_nt_error_from_unix(errno);
1128                 goto err;
1129         }
1130
1131         if (vfs_ChDir(conn, &priv_paths->parent_name) == -1) {
1132                 status = map_nt_error_from_unix(errno);
1133                 goto err;
1134         }
1135
1136         smb_fname_cwd = synthetic_smb_fname(talloc_tos(), ".", NULL, NULL, 0);
1137         if (smb_fname_cwd == NULL) {
1138                 status = NT_STATUS_NO_MEMORY;
1139                 goto err;
1140         }
1141
1142         /* Get the absolute path of the parent directory. */
1143         resolved_fname = SMB_VFS_REALPATH(conn, ctx, smb_fname_cwd);
1144         if (resolved_fname == NULL) {
1145                 status = map_nt_error_from_unix(errno);
1146                 goto err;
1147         }
1148         resolved_name = resolved_fname->base_name;
1149
1150         if (*resolved_name != '/') {
1151                 DEBUG(0,("check_reduced_name_with_privilege: realpath "
1152                         "doesn't return absolute paths !\n"));
1153                 status = NT_STATUS_OBJECT_NAME_INVALID;
1154                 goto err;
1155         }
1156
1157         DEBUG(10,("check_reduced_name_with_privilege: realpath [%s] -> [%s]\n",
1158                 priv_paths->parent_name.base_name,
1159                 resolved_name));
1160
1161         /* Now check the stat value is the same. */
1162         if (SMB_VFS_LSTAT(conn, smb_fname_cwd) != 0) {
1163                 status = map_nt_error_from_unix(errno);
1164                 goto err;
1165         }
1166
1167         /* Ensure we're pointing at the same place. */
1168         if (!check_same_stat(&smb_fname_cwd->st, &priv_paths->parent_name.st)) {
1169                 DEBUG(0,("check_reduced_name_with_privilege: "
1170                         "device/inode/uid/gid on directory %s changed. "
1171                         "Denying access !\n",
1172                         priv_paths->parent_name.base_name));
1173                 status = NT_STATUS_ACCESS_DENIED;
1174                 goto err;
1175         }
1176
1177         /* Ensure we're below the connect path. */
1178
1179         conn_rootdir = SMB_VFS_CONNECTPATH(conn, smb_fname);
1180         if (conn_rootdir == NULL) {
1181                 DEBUG(2, ("check_reduced_name_with_privilege: Could not get "
1182                         "conn_rootdir\n"));
1183                 status = NT_STATUS_ACCESS_DENIED;
1184                 goto err;
1185         }
1186
1187         rootdir_len = strlen(conn_rootdir);
1188
1189         /*
1190          * In the case of rootdir_len == 1, we know that conn_rootdir is
1191          * "/", and we also know that resolved_name starts with a slash.
1192          * So, in this corner case, resolved_name is automatically a
1193          * sub-directory of the conn_rootdir. Thus we can skip the string
1194          * comparison and the next character checks (which are even
1195          * wrong in this case).
1196          */
1197         if (rootdir_len != 1) {
1198                 bool matched;
1199
1200                 matched = (strncmp(conn_rootdir, resolved_name,
1201                                 rootdir_len) == 0);
1202
1203                 if (!matched || (resolved_name[rootdir_len] != '/' &&
1204                                  resolved_name[rootdir_len] != '\0')) {
1205                         DEBUG(2, ("check_reduced_name_with_privilege: Bad "
1206                                 "access attempt: %s is a symlink outside the "
1207                                 "share path\n",
1208                                 dir_name));
1209                         DEBUGADD(2, ("conn_rootdir =%s\n", conn_rootdir));
1210                         DEBUGADD(2, ("resolved_name=%s\n", resolved_name));
1211                         status = NT_STATUS_ACCESS_DENIED;
1212                         goto err;
1213                 }
1214         }
1215
1216         /* Now ensure that the last component either doesn't
1217            exist, or is *NOT* a symlink. */
1218
1219         ret = SMB_VFS_LSTAT(conn, &priv_paths->file_name);
1220         if (ret == -1) {
1221                 /* Errno must be ENOENT for this be ok. */
1222                 if (errno != ENOENT) {
1223                         status = map_nt_error_from_unix(errno);
1224                         DEBUG(2, ("check_reduced_name_with_privilege: "
1225                                 "LSTAT on %s failed with %s\n",
1226                                 priv_paths->file_name.base_name,
1227                                 nt_errstr(status)));
1228                         goto err;
1229                 }
1230         }
1231
1232         if (VALID_STAT(priv_paths->file_name.st) &&
1233                         S_ISLNK(priv_paths->file_name.st.st_ex_mode)) {
1234                 DEBUG(2, ("check_reduced_name_with_privilege: "
1235                         "Last component %s is a symlink. Denying"
1236                         "access.\n",
1237                         priv_paths->file_name.base_name));
1238                 status = NT_STATUS_ACCESS_DENIED;
1239                 goto err;
1240         }
1241
1242         smbreq->priv_paths = priv_paths;
1243         status = NT_STATUS_OK;
1244
1245   err:
1246
1247         if (saved_dir_fname != NULL) {
1248                 vfs_ChDir(conn, saved_dir_fname);
1249                 TALLOC_FREE(saved_dir_fname);
1250         }
1251         TALLOC_FREE(resolved_fname);
1252         if (!NT_STATUS_IS_OK(status)) {
1253                 TALLOC_FREE(priv_paths);
1254         }
1255         TALLOC_FREE(dir_name);
1256         return status;
1257 }
1258
1259 /*******************************************************************
1260  Reduce a file name, removing .. elements and checking that
1261  it is below dir in the heirachy. This uses realpath.
1262
1263  If cwd_name == NULL then fname is a client given path relative
1264  to the root path of the share.
1265
1266  If cwd_name != NULL then fname is a client given path relative
1267  to cwd_name. cwd_name is relative to the root path of the share.
1268 ********************************************************************/
1269
1270 NTSTATUS check_reduced_name(connection_struct *conn,
1271                                 const struct smb_filename *cwd_fname,
1272                                 const struct smb_filename *smb_fname)
1273 {
1274         TALLOC_CTX *ctx = talloc_tos();
1275         const char *cwd_name = cwd_fname ? cwd_fname->base_name : NULL;
1276         const char *fname = smb_fname->base_name;
1277         struct smb_filename *resolved_fname;
1278         char *resolved_name = NULL;
1279         char *new_fname = NULL;
1280         bool allow_symlinks = true;
1281         bool allow_widelinks = false;
1282
1283         DBG_DEBUG("check_reduced_name [%s] [%s]\n", fname, conn->connectpath);
1284
1285         resolved_fname = SMB_VFS_REALPATH(conn, ctx, smb_fname);
1286
1287         if (resolved_fname == NULL) {
1288                 switch (errno) {
1289                         case ENOTDIR:
1290                                 DEBUG(3,("check_reduced_name: Component not a "
1291                                          "directory in getting realpath for "
1292                                          "%s\n", fname));
1293                                 return NT_STATUS_OBJECT_PATH_NOT_FOUND;
1294                         case ENOENT:
1295                         {
1296                                 char *dir_name = NULL;
1297                                 struct smb_filename dir_fname = {0};
1298                                 const char *last_component = NULL;
1299
1300                                 /* Last component didn't exist.
1301                                    Remove it and try and canonicalise
1302                                    the directory name. */
1303                                 if (!parent_dirname(ctx, fname,
1304                                                 &dir_name,
1305                                                 &last_component)) {
1306                                         return NT_STATUS_NO_MEMORY;
1307                                 }
1308
1309                                 dir_fname = (struct smb_filename)
1310                                         { .base_name = dir_name };
1311                                 resolved_fname = SMB_VFS_REALPATH(conn,
1312                                                         ctx,
1313                                                         &dir_fname);
1314                                 if (resolved_fname == NULL) {
1315                                         NTSTATUS status = map_nt_error_from_unix(errno);
1316
1317                                         if (errno == ENOENT || errno == ENOTDIR) {
1318                                                 status = NT_STATUS_OBJECT_PATH_NOT_FOUND;
1319                                         }
1320
1321                                         DEBUG(3,("check_reduce_name: "
1322                                                  "couldn't get realpath for "
1323                                                  "%s (%s)\n",
1324                                                 fname,
1325                                                 nt_errstr(status)));
1326                                         return status;
1327                                 }
1328                                 resolved_name = talloc_asprintf(ctx,
1329                                                 "%s/%s",
1330                                                 resolved_fname->base_name,
1331                                                 last_component);
1332                                 if (resolved_name == NULL) {
1333                                         return NT_STATUS_NO_MEMORY;
1334                                 }
1335                                 break;
1336                         }
1337                         default:
1338                                 DEBUG(3,("check_reduced_name: couldn't get "
1339                                          "realpath for %s\n", fname));
1340                                 return map_nt_error_from_unix(errno);
1341                 }
1342         } else {
1343                 resolved_name = resolved_fname->base_name;
1344         }
1345
1346         DEBUG(10,("check_reduced_name realpath [%s] -> [%s]\n", fname,
1347                   resolved_name));
1348
1349         if (*resolved_name != '/') {
1350                 DEBUG(0,("check_reduced_name: realpath doesn't return "
1351                          "absolute paths !\n"));
1352                 TALLOC_FREE(resolved_fname);
1353                 return NT_STATUS_OBJECT_NAME_INVALID;
1354         }
1355
1356         allow_widelinks = lp_widelinks(SNUM(conn));
1357         allow_symlinks = lp_follow_symlinks(SNUM(conn));
1358
1359         /* Common widelinks and symlinks checks. */
1360         if (!allow_widelinks || !allow_symlinks) {
1361                 const char *conn_rootdir;
1362                 size_t rootdir_len;
1363
1364                 conn_rootdir = SMB_VFS_CONNECTPATH(conn, smb_fname);
1365                 if (conn_rootdir == NULL) {
1366                         DEBUG(2, ("check_reduced_name: Could not get "
1367                                 "conn_rootdir\n"));
1368                         TALLOC_FREE(resolved_fname);
1369                         return NT_STATUS_ACCESS_DENIED;
1370                 }
1371
1372                 rootdir_len = strlen(conn_rootdir);
1373
1374                 /*
1375                  * In the case of rootdir_len == 1, we know that
1376                  * conn_rootdir is "/", and we also know that
1377                  * resolved_name starts with a slash.  So, in this
1378                  * corner case, resolved_name is automatically a
1379                  * sub-directory of the conn_rootdir. Thus we can skip
1380                  * the string comparison and the next character checks
1381                  * (which are even wrong in this case).
1382                  */
1383                 if (rootdir_len != 1) {
1384                         bool matched;
1385
1386                         matched = (strncmp(conn_rootdir, resolved_name,
1387                                         rootdir_len) == 0);
1388                         if (!matched || (resolved_name[rootdir_len] != '/' &&
1389                                          resolved_name[rootdir_len] != '\0')) {
1390                                 DEBUG(2, ("check_reduced_name: Bad access "
1391                                         "attempt: %s is a symlink outside the "
1392                                         "share path\n", fname));
1393                                 DEBUGADD(2, ("conn_rootdir =%s\n",
1394                                              conn_rootdir));
1395                                 DEBUGADD(2, ("resolved_name=%s\n",
1396                                              resolved_name));
1397                                 TALLOC_FREE(resolved_fname);
1398                                 return NT_STATUS_ACCESS_DENIED;
1399                         }
1400                 }
1401
1402                 /* Extra checks if all symlinks are disallowed. */
1403                 if (!allow_symlinks) {
1404                         /* fname can't have changed in resolved_path. */
1405                         const char *p = &resolved_name[rootdir_len];
1406
1407                         /*
1408                          * UNIX filesystem semantics, names consisting
1409                          * only of "." or ".." CANNOT be symlinks.
1410                          */
1411                         if (ISDOT(fname) || ISDOTDOT(fname)) {
1412                                 goto out;
1413                         }
1414
1415                         if (*p != '/') {
1416                                 DEBUG(2, ("check_reduced_name: logic error (%c) "
1417                                         "in resolved_name: %s\n",
1418                                         *p,
1419                                         fname));
1420                                 TALLOC_FREE(resolved_fname);
1421                                 return NT_STATUS_ACCESS_DENIED;
1422                         }
1423
1424                         p++;
1425
1426                         /*
1427                          * If cwd_name is present and not ".",
1428                          * then fname is relative to that, not
1429                          * the root of the share. Make sure the
1430                          * path we check is the one the client
1431                          * sent (cwd_name+fname).
1432                          */
1433                         if (cwd_name != NULL && !ISDOT(cwd_name)) {
1434                                 new_fname = talloc_asprintf(ctx,
1435                                                         "%s/%s",
1436                                                         cwd_name,
1437                                                         fname);
1438                                 if (new_fname == NULL) {
1439                                         TALLOC_FREE(resolved_fname);
1440                                         return NT_STATUS_NO_MEMORY;
1441                                 }
1442                                 fname = new_fname;
1443                         }
1444
1445                         if (strcmp(fname, p)!=0) {
1446                                 DEBUG(2, ("check_reduced_name: Bad access "
1447                                         "attempt: %s is a symlink to %s\n",
1448                                           fname, p));
1449                                 TALLOC_FREE(resolved_fname);
1450                                 TALLOC_FREE(new_fname);
1451                                 return NT_STATUS_ACCESS_DENIED;
1452                         }
1453                 }
1454         }
1455
1456   out:
1457
1458         DBG_INFO("%s reduced to %s\n", fname, resolved_name);
1459         TALLOC_FREE(resolved_fname);
1460         TALLOC_FREE(new_fname);
1461         return NT_STATUS_OK;
1462 }
1463
1464 /**
1465  * XXX: This is temporary and there should be no callers of this once
1466  * smb_filename is plumbed through all path based operations.
1467  *
1468  * Called when we know stream name parsing has already been done.
1469  */
1470 int vfs_stat_smb_basename(struct connection_struct *conn,
1471                         const struct smb_filename *smb_fname_in,
1472                         SMB_STRUCT_STAT *psbuf)
1473 {
1474         struct smb_filename smb_fname = {
1475                 .base_name = discard_const_p(char, smb_fname_in->base_name),
1476                 .flags = smb_fname_in->flags
1477         };
1478         int ret;
1479
1480         if (smb_fname.flags & SMB_FILENAME_POSIX_PATH) {
1481                 ret = SMB_VFS_LSTAT(conn, &smb_fname);
1482         } else {
1483                 ret = SMB_VFS_STAT(conn, &smb_fname);
1484         }
1485
1486         if (ret != -1) {
1487                 *psbuf = smb_fname.st;
1488         }
1489         return ret;
1490 }
1491
1492 /**
1493  * Ensure LSTAT is called for POSIX paths.
1494  */
1495
1496 NTSTATUS vfs_stat_fsp(files_struct *fsp)
1497 {
1498         int ret;
1499
1500         if(fsp->fh->fd == -1) {
1501                 if (fsp->posix_flags & FSP_POSIX_FLAGS_OPEN) {
1502                         ret = SMB_VFS_LSTAT(fsp->conn, fsp->fsp_name);
1503                 } else {
1504                         ret = SMB_VFS_STAT(fsp->conn, fsp->fsp_name);
1505                 }
1506                 if (ret == -1) {
1507                         return map_nt_error_from_unix(errno);
1508                 }
1509         } else {
1510                 if(SMB_VFS_FSTAT(fsp, &fsp->fsp_name->st) != 0) {
1511                         return map_nt_error_from_unix(errno);
1512                 }
1513         }
1514         return NT_STATUS_OK;
1515 }
1516
1517 /**
1518  * Initialize num_streams and streams, then call VFS op streaminfo
1519  */
1520 NTSTATUS vfs_streaminfo(connection_struct *conn,
1521                         struct files_struct *fsp,
1522                         const struct smb_filename *smb_fname,
1523                         TALLOC_CTX *mem_ctx,
1524                         unsigned int *num_streams,
1525                         struct stream_struct **streams)
1526 {
1527         *num_streams = 0;
1528         *streams = NULL;
1529         return SMB_VFS_STREAMINFO(conn,
1530                         fsp,
1531                         smb_fname,
1532                         mem_ctx,
1533                         num_streams,
1534                         streams);
1535 }
1536
1537 /*
1538   generate a file_id from a stat structure
1539  */
1540 struct file_id vfs_file_id_from_sbuf(connection_struct *conn, const SMB_STRUCT_STAT *sbuf)
1541 {
1542         return SMB_VFS_FILE_ID_CREATE(conn, sbuf);
1543 }
1544
1545 int smb_vfs_call_connect(struct vfs_handle_struct *handle,
1546                          const char *service, const char *user)
1547 {
1548         VFS_FIND(connect);
1549         return handle->fns->connect_fn(handle, service, user);
1550 }
1551
1552 void smb_vfs_call_disconnect(struct vfs_handle_struct *handle)
1553 {
1554         VFS_FIND(disconnect);
1555         handle->fns->disconnect_fn(handle);
1556 }
1557
1558 uint64_t smb_vfs_call_disk_free(struct vfs_handle_struct *handle,
1559                                 const struct smb_filename *smb_fname,
1560                                 uint64_t *bsize,
1561                                 uint64_t *dfree,
1562                                 uint64_t *dsize)
1563 {
1564         VFS_FIND(disk_free);
1565         return handle->fns->disk_free_fn(handle, smb_fname,
1566                         bsize, dfree, dsize);
1567 }
1568
1569 int smb_vfs_call_get_quota(struct vfs_handle_struct *handle,
1570                                 const struct smb_filename *smb_fname,
1571                                 enum SMB_QUOTA_TYPE qtype,
1572                                 unid_t id,
1573                                 SMB_DISK_QUOTA *qt)
1574 {
1575         VFS_FIND(get_quota);
1576         return handle->fns->get_quota_fn(handle, smb_fname, qtype, id, qt);
1577 }
1578
1579 int smb_vfs_call_set_quota(struct vfs_handle_struct *handle,
1580                            enum SMB_QUOTA_TYPE qtype, unid_t id,
1581                            SMB_DISK_QUOTA *qt)
1582 {
1583         VFS_FIND(set_quota);
1584         return handle->fns->set_quota_fn(handle, qtype, id, qt);
1585 }
1586
1587 int smb_vfs_call_get_shadow_copy_data(struct vfs_handle_struct *handle,
1588                                       struct files_struct *fsp,
1589                                       struct shadow_copy_data *shadow_copy_data,
1590                                       bool labels)
1591 {
1592         VFS_FIND(get_shadow_copy_data);
1593         return handle->fns->get_shadow_copy_data_fn(handle, fsp,
1594                                                     shadow_copy_data,
1595                                                     labels);
1596 }
1597 int smb_vfs_call_statvfs(struct vfs_handle_struct *handle,
1598                         const struct smb_filename *smb_fname,
1599                         struct vfs_statvfs_struct *statbuf)
1600 {
1601         VFS_FIND(statvfs);
1602         return handle->fns->statvfs_fn(handle, smb_fname, statbuf);
1603 }
1604
1605 uint32_t smb_vfs_call_fs_capabilities(struct vfs_handle_struct *handle,
1606                         enum timestamp_set_resolution *p_ts_res)
1607 {
1608         VFS_FIND(fs_capabilities);
1609         return handle->fns->fs_capabilities_fn(handle, p_ts_res);
1610 }
1611
1612 NTSTATUS smb_vfs_call_get_dfs_referrals(struct vfs_handle_struct *handle,
1613                                         struct dfs_GetDFSReferral *r)
1614 {
1615         VFS_FIND(get_dfs_referrals);
1616         return handle->fns->get_dfs_referrals_fn(handle, r);
1617 }
1618
1619 DIR *smb_vfs_call_opendir(struct vfs_handle_struct *handle,
1620                                         const struct smb_filename *smb_fname,
1621                                         const char *mask,
1622                                         uint32_t attributes)
1623 {
1624         VFS_FIND(opendir);
1625         return handle->fns->opendir_fn(handle, smb_fname, mask, attributes);
1626 }
1627
1628 DIR *smb_vfs_call_fdopendir(struct vfs_handle_struct *handle,
1629                                         struct files_struct *fsp,
1630                                         const char *mask,
1631                                         uint32_t attributes)
1632 {
1633         VFS_FIND(fdopendir);
1634         return handle->fns->fdopendir_fn(handle, fsp, mask, attributes);
1635 }
1636
1637 struct dirent *smb_vfs_call_readdir(struct vfs_handle_struct *handle,
1638                                               DIR *dirp,
1639                                               SMB_STRUCT_STAT *sbuf)
1640 {
1641         VFS_FIND(readdir);
1642         return handle->fns->readdir_fn(handle, dirp, sbuf);
1643 }
1644
1645 void smb_vfs_call_seekdir(struct vfs_handle_struct *handle,
1646                           DIR *dirp, long offset)
1647 {
1648         VFS_FIND(seekdir);
1649         handle->fns->seekdir_fn(handle, dirp, offset);
1650 }
1651
1652 long smb_vfs_call_telldir(struct vfs_handle_struct *handle,
1653                           DIR *dirp)
1654 {
1655         VFS_FIND(telldir);
1656         return handle->fns->telldir_fn(handle, dirp);
1657 }
1658
1659 void smb_vfs_call_rewind_dir(struct vfs_handle_struct *handle,
1660                              DIR *dirp)
1661 {
1662         VFS_FIND(rewind_dir);
1663         handle->fns->rewind_dir_fn(handle, dirp);
1664 }
1665
1666 int smb_vfs_call_mkdir(struct vfs_handle_struct *handle,
1667                         const struct smb_filename *smb_fname,
1668                         mode_t mode)
1669 {
1670         VFS_FIND(mkdir);
1671         return handle->fns->mkdir_fn(handle, smb_fname, mode);
1672 }
1673
1674 int smb_vfs_call_rmdir(struct vfs_handle_struct *handle,
1675                         const struct smb_filename *smb_fname)
1676 {
1677         VFS_FIND(rmdir);
1678         return handle->fns->rmdir_fn(handle, smb_fname);
1679 }
1680
1681 int smb_vfs_call_closedir(struct vfs_handle_struct *handle,
1682                           DIR *dir)
1683 {
1684         VFS_FIND(closedir);
1685         return handle->fns->closedir_fn(handle, dir);
1686 }
1687
1688 void smb_vfs_call_init_search_op(struct vfs_handle_struct *handle,
1689                                  DIR *dirp)
1690 {
1691         VFS_FIND(init_search_op);
1692         handle->fns->init_search_op_fn(handle, dirp);
1693 }
1694
1695 int smb_vfs_call_open(struct vfs_handle_struct *handle,
1696                       struct smb_filename *smb_fname, struct files_struct *fsp,
1697                       int flags, mode_t mode)
1698 {
1699         VFS_FIND(open);
1700         return handle->fns->open_fn(handle, smb_fname, fsp, flags, mode);
1701 }
1702
1703 NTSTATUS smb_vfs_call_create_file(struct vfs_handle_struct *handle,
1704                                   struct smb_request *req,
1705                                   uint16_t root_dir_fid,
1706                                   struct smb_filename *smb_fname,
1707                                   uint32_t access_mask,
1708                                   uint32_t share_access,
1709                                   uint32_t create_disposition,
1710                                   uint32_t create_options,
1711                                   uint32_t file_attributes,
1712                                   uint32_t oplock_request,
1713                                   struct smb2_lease *lease,
1714                                   uint64_t allocation_size,
1715                                   uint32_t private_flags,
1716                                   struct security_descriptor *sd,
1717                                   struct ea_list *ea_list,
1718                                   files_struct **result,
1719                                   int *pinfo,
1720                                   const struct smb2_create_blobs *in_context_blobs,
1721                                   struct smb2_create_blobs *out_context_blobs)
1722 {
1723         VFS_FIND(create_file);
1724         return handle->fns->create_file_fn(
1725                 handle, req, root_dir_fid, smb_fname, access_mask,
1726                 share_access, create_disposition, create_options,
1727                 file_attributes, oplock_request, lease, allocation_size,
1728                 private_flags, sd, ea_list,
1729                 result, pinfo, in_context_blobs, out_context_blobs);
1730 }
1731
1732 int smb_vfs_call_close(struct vfs_handle_struct *handle,
1733                        struct files_struct *fsp)
1734 {
1735         VFS_FIND(close);
1736         return handle->fns->close_fn(handle, fsp);
1737 }
1738
1739 ssize_t smb_vfs_call_read(struct vfs_handle_struct *handle,
1740                           struct files_struct *fsp, void *data, size_t n)
1741 {
1742         VFS_FIND(read);
1743         return handle->fns->read_fn(handle, fsp, data, n);
1744 }
1745
1746 ssize_t smb_vfs_call_pread(struct vfs_handle_struct *handle,
1747                            struct files_struct *fsp, void *data, size_t n,
1748                            off_t offset)
1749 {
1750         VFS_FIND(pread);
1751         return handle->fns->pread_fn(handle, fsp, data, n, offset);
1752 }
1753
1754 struct smb_vfs_call_pread_state {
1755         ssize_t (*recv_fn)(struct tevent_req *req, struct vfs_aio_state *vfs_aio_state);
1756         ssize_t retval;
1757         struct vfs_aio_state vfs_aio_state;
1758 };
1759
1760 static void smb_vfs_call_pread_done(struct tevent_req *subreq);
1761
1762 struct tevent_req *smb_vfs_call_pread_send(struct vfs_handle_struct *handle,
1763                                            TALLOC_CTX *mem_ctx,
1764                                            struct tevent_context *ev,
1765                                            struct files_struct *fsp,
1766                                            void *data,
1767                                            size_t n, off_t offset)
1768 {
1769         struct tevent_req *req, *subreq;
1770         struct smb_vfs_call_pread_state *state;
1771
1772         req = tevent_req_create(mem_ctx, &state,
1773                                 struct smb_vfs_call_pread_state);
1774         if (req == NULL) {
1775                 return NULL;
1776         }
1777         VFS_FIND(pread_send);
1778         state->recv_fn = handle->fns->pread_recv_fn;
1779
1780         subreq = handle->fns->pread_send_fn(handle, state, ev, fsp, data, n,
1781                                             offset);
1782         if (tevent_req_nomem(subreq, req)) {
1783                 return tevent_req_post(req, ev);
1784         }
1785         tevent_req_set_callback(subreq, smb_vfs_call_pread_done, req);
1786         return req;
1787 }
1788
1789 static void smb_vfs_call_pread_done(struct tevent_req *subreq)
1790 {
1791         struct tevent_req *req = tevent_req_callback_data(
1792                 subreq, struct tevent_req);
1793         struct smb_vfs_call_pread_state *state = tevent_req_data(
1794                 req, struct smb_vfs_call_pread_state);
1795
1796         state->retval = state->recv_fn(subreq, &state->vfs_aio_state);
1797         TALLOC_FREE(subreq);
1798         if (state->retval == -1) {
1799                 tevent_req_error(req, state->vfs_aio_state.error);
1800                 return;
1801         }
1802         tevent_req_done(req);
1803 }
1804
1805 ssize_t SMB_VFS_PREAD_RECV(struct tevent_req *req,
1806                            struct vfs_aio_state *vfs_aio_state)
1807 {
1808         struct smb_vfs_call_pread_state *state = tevent_req_data(
1809                 req, struct smb_vfs_call_pread_state);
1810
1811         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
1812                 return -1;
1813         }
1814         *vfs_aio_state = state->vfs_aio_state;
1815         return state->retval;
1816 }
1817
1818 ssize_t smb_vfs_call_write(struct vfs_handle_struct *handle,
1819                            struct files_struct *fsp, const void *data,
1820                            size_t n)
1821 {
1822         VFS_FIND(write);
1823         return handle->fns->write_fn(handle, fsp, data, n);
1824 }
1825
1826 ssize_t smb_vfs_call_pwrite(struct vfs_handle_struct *handle,
1827                             struct files_struct *fsp, const void *data,
1828                             size_t n, off_t offset)
1829 {
1830         VFS_FIND(pwrite);
1831         return handle->fns->pwrite_fn(handle, fsp, data, n, offset);
1832 }
1833
1834 struct smb_vfs_call_pwrite_state {
1835         ssize_t (*recv_fn)(struct tevent_req *req, struct vfs_aio_state *vfs_aio_state);
1836         ssize_t retval;
1837         struct vfs_aio_state vfs_aio_state;
1838 };
1839
1840 static void smb_vfs_call_pwrite_done(struct tevent_req *subreq);
1841
1842 struct tevent_req *smb_vfs_call_pwrite_send(struct vfs_handle_struct *handle,
1843                                             TALLOC_CTX *mem_ctx,
1844                                             struct tevent_context *ev,
1845                                             struct files_struct *fsp,
1846                                             const void *data,
1847                                             size_t n, off_t offset)
1848 {
1849         struct tevent_req *req, *subreq;
1850         struct smb_vfs_call_pwrite_state *state;
1851
1852         req = tevent_req_create(mem_ctx, &state,
1853                                 struct smb_vfs_call_pwrite_state);
1854         if (req == NULL) {
1855                 return NULL;
1856         }
1857         VFS_FIND(pwrite_send);
1858         state->recv_fn = handle->fns->pwrite_recv_fn;
1859
1860         subreq = handle->fns->pwrite_send_fn(handle, state, ev, fsp, data, n,
1861                                              offset);
1862         if (tevent_req_nomem(subreq, req)) {
1863                 return tevent_req_post(req, ev);
1864         }
1865         tevent_req_set_callback(subreq, smb_vfs_call_pwrite_done, req);
1866         return req;
1867 }
1868
1869 static void smb_vfs_call_pwrite_done(struct tevent_req *subreq)
1870 {
1871         struct tevent_req *req = tevent_req_callback_data(
1872                 subreq, struct tevent_req);
1873         struct smb_vfs_call_pwrite_state *state = tevent_req_data(
1874                 req, struct smb_vfs_call_pwrite_state);
1875
1876         state->retval = state->recv_fn(subreq, &state->vfs_aio_state);
1877         TALLOC_FREE(subreq);
1878         if (state->retval == -1) {
1879                 tevent_req_error(req, state->vfs_aio_state.error);
1880                 return;
1881         }
1882         tevent_req_done(req);
1883 }
1884
1885 ssize_t SMB_VFS_PWRITE_RECV(struct tevent_req *req,
1886                             struct vfs_aio_state *vfs_aio_state)
1887 {
1888         struct smb_vfs_call_pwrite_state *state = tevent_req_data(
1889                 req, struct smb_vfs_call_pwrite_state);
1890
1891         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
1892                 return -1;
1893         }
1894         *vfs_aio_state = state->vfs_aio_state;
1895         return state->retval;
1896 }
1897
1898 off_t smb_vfs_call_lseek(struct vfs_handle_struct *handle,
1899                              struct files_struct *fsp, off_t offset,
1900                              int whence)
1901 {
1902         VFS_FIND(lseek);
1903         return handle->fns->lseek_fn(handle, fsp, offset, whence);
1904 }
1905
1906 ssize_t smb_vfs_call_sendfile(struct vfs_handle_struct *handle, int tofd,
1907                               files_struct *fromfsp, const DATA_BLOB *header,
1908                               off_t offset, size_t count)
1909 {
1910         VFS_FIND(sendfile);
1911         return handle->fns->sendfile_fn(handle, tofd, fromfsp, header, offset,
1912                                         count);
1913 }
1914
1915 ssize_t smb_vfs_call_recvfile(struct vfs_handle_struct *handle, int fromfd,
1916                               files_struct *tofsp, off_t offset,
1917                               size_t count)
1918 {
1919         VFS_FIND(recvfile);
1920         return handle->fns->recvfile_fn(handle, fromfd, tofsp, offset, count);
1921 }
1922
1923 int smb_vfs_call_rename(struct vfs_handle_struct *handle,
1924                         const struct smb_filename *smb_fname_src,
1925                         const struct smb_filename *smb_fname_dst)
1926 {
1927         VFS_FIND(rename);
1928         return handle->fns->rename_fn(handle, smb_fname_src, smb_fname_dst);
1929 }
1930
1931 int smb_vfs_call_fsync(struct vfs_handle_struct *handle,
1932                        struct files_struct *fsp)
1933 {
1934         VFS_FIND(fsync);
1935         return handle->fns->fsync_fn(handle, fsp);
1936 }
1937
1938 struct smb_vfs_call_fsync_state {
1939         int (*recv_fn)(struct tevent_req *req, struct vfs_aio_state *vfs_aio_state);
1940         int retval;
1941         struct vfs_aio_state vfs_aio_state;
1942 };
1943
1944 static void smb_vfs_call_fsync_done(struct tevent_req *subreq);
1945
1946 struct tevent_req *smb_vfs_call_fsync_send(struct vfs_handle_struct *handle,
1947                                            TALLOC_CTX *mem_ctx,
1948                                            struct tevent_context *ev,
1949                                            struct files_struct *fsp)
1950 {
1951         struct tevent_req *req, *subreq;
1952         struct smb_vfs_call_fsync_state *state;
1953
1954         req = tevent_req_create(mem_ctx, &state,
1955                                 struct smb_vfs_call_fsync_state);
1956         if (req == NULL) {
1957                 return NULL;
1958         }
1959         VFS_FIND(fsync_send);
1960         state->recv_fn = handle->fns->fsync_recv_fn;
1961
1962         subreq = handle->fns->fsync_send_fn(handle, state, ev, fsp);
1963         if (tevent_req_nomem(subreq, req)) {
1964                 return tevent_req_post(req, ev);
1965         }
1966         tevent_req_set_callback(subreq, smb_vfs_call_fsync_done, req);
1967         return req;
1968 }
1969
1970 static void smb_vfs_call_fsync_done(struct tevent_req *subreq)
1971 {
1972         struct tevent_req *req = tevent_req_callback_data(
1973                 subreq, struct tevent_req);
1974         struct smb_vfs_call_fsync_state *state = tevent_req_data(
1975                 req, struct smb_vfs_call_fsync_state);
1976
1977         state->retval = state->recv_fn(subreq, &state->vfs_aio_state);
1978         TALLOC_FREE(subreq);
1979         if (state->retval == -1) {
1980                 tevent_req_error(req, state->vfs_aio_state.error);
1981                 return;
1982         }
1983         tevent_req_done(req);
1984 }
1985
1986 int SMB_VFS_FSYNC_RECV(struct tevent_req *req, struct vfs_aio_state *vfs_aio_state)
1987 {
1988         struct smb_vfs_call_fsync_state *state = tevent_req_data(
1989                 req, struct smb_vfs_call_fsync_state);
1990
1991         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
1992                 return -1;
1993         }
1994         *vfs_aio_state = state->vfs_aio_state;
1995         return state->retval;
1996 }
1997
1998
1999 int smb_vfs_call_stat(struct vfs_handle_struct *handle,
2000                       struct smb_filename *smb_fname)
2001 {
2002         VFS_FIND(stat);
2003         return handle->fns->stat_fn(handle, smb_fname);
2004 }
2005
2006 int smb_vfs_call_fstat(struct vfs_handle_struct *handle,
2007                        struct files_struct *fsp, SMB_STRUCT_STAT *sbuf)
2008 {
2009         VFS_FIND(fstat);
2010         return handle->fns->fstat_fn(handle, fsp, sbuf);
2011 }
2012
2013 int smb_vfs_call_lstat(struct vfs_handle_struct *handle,
2014                        struct smb_filename *smb_filename)
2015 {
2016         VFS_FIND(lstat);
2017         return handle->fns->lstat_fn(handle, smb_filename);
2018 }
2019
2020 uint64_t smb_vfs_call_get_alloc_size(struct vfs_handle_struct *handle,
2021                                      struct files_struct *fsp,
2022                                      const SMB_STRUCT_STAT *sbuf)
2023 {
2024         VFS_FIND(get_alloc_size);
2025         return handle->fns->get_alloc_size_fn(handle, fsp, sbuf);
2026 }
2027
2028 int smb_vfs_call_unlink(struct vfs_handle_struct *handle,
2029                         const struct smb_filename *smb_fname)
2030 {
2031         VFS_FIND(unlink);
2032         return handle->fns->unlink_fn(handle, smb_fname);
2033 }
2034
2035 int smb_vfs_call_chmod(struct vfs_handle_struct *handle,
2036                         const struct smb_filename *smb_fname,
2037                         mode_t mode)
2038 {
2039         VFS_FIND(chmod);
2040         return handle->fns->chmod_fn(handle, smb_fname, mode);
2041 }
2042
2043 int smb_vfs_call_fchmod(struct vfs_handle_struct *handle,
2044                         struct files_struct *fsp, mode_t mode)
2045 {
2046         VFS_FIND(fchmod);
2047         return handle->fns->fchmod_fn(handle, fsp, mode);
2048 }
2049
2050 int smb_vfs_call_chown(struct vfs_handle_struct *handle,
2051                         const struct smb_filename *smb_fname,
2052                         uid_t uid,
2053                         gid_t gid)
2054 {
2055         VFS_FIND(chown);
2056         return handle->fns->chown_fn(handle, smb_fname, uid, gid);
2057 }
2058
2059 int smb_vfs_call_fchown(struct vfs_handle_struct *handle,
2060                         struct files_struct *fsp, uid_t uid, gid_t gid)
2061 {
2062         VFS_FIND(fchown);
2063         return handle->fns->fchown_fn(handle, fsp, uid, gid);
2064 }
2065
2066 int smb_vfs_call_lchown(struct vfs_handle_struct *handle,
2067                         const struct smb_filename *smb_fname,
2068                         uid_t uid,
2069                         gid_t gid)
2070 {
2071         VFS_FIND(lchown);
2072         return handle->fns->lchown_fn(handle, smb_fname, uid, gid);
2073 }
2074
2075 NTSTATUS vfs_chown_fsp(files_struct *fsp, uid_t uid, gid_t gid)
2076 {
2077         int ret;
2078         bool as_root = false;
2079         NTSTATUS status;
2080
2081         if (fsp->fh->fd != -1) {
2082                 /* Try fchown. */
2083                 ret = SMB_VFS_FCHOWN(fsp, uid, gid);
2084                 if (ret == 0) {
2085                         return NT_STATUS_OK;
2086                 }
2087                 if (ret == -1 && errno != ENOSYS) {
2088                         return map_nt_error_from_unix(errno);
2089                 }
2090         }
2091
2092         as_root = (geteuid() == 0);
2093
2094         if (as_root) {
2095                 /*
2096                  * We are being asked to chown as root. Make
2097                  * sure we chdir() into the path to pin it,
2098                  * and always act using lchown to ensure we
2099                  * don't deref any symbolic links.
2100                  */
2101                 char *parent_dir = NULL;
2102                 const char *final_component = NULL;
2103                 struct smb_filename *local_smb_fname = NULL;
2104                 struct smb_filename parent_dir_fname = {0};
2105                 struct smb_filename *saved_dir_fname = NULL;
2106
2107                 saved_dir_fname = vfs_GetWd(talloc_tos(),fsp->conn);
2108                 if (!saved_dir_fname) {
2109                         status = map_nt_error_from_unix(errno);
2110                         DEBUG(0,("vfs_chown_fsp: failed to get "
2111                                 "current working directory. Error was %s\n",
2112                                 strerror(errno)));
2113                         return status;
2114                 }
2115
2116                 if (!parent_dirname(talloc_tos(),
2117                                 fsp->fsp_name->base_name,
2118                                 &parent_dir,
2119                                 &final_component)) {
2120                         return NT_STATUS_NO_MEMORY;
2121                 }
2122
2123                 parent_dir_fname = (struct smb_filename) {
2124                         .base_name = parent_dir,
2125                         .flags = fsp->fsp_name->flags
2126                 };
2127
2128                 /* cd into the parent dir to pin it. */
2129                 ret = vfs_ChDir(fsp->conn, &parent_dir_fname);
2130                 if (ret == -1) {
2131                         return map_nt_error_from_unix(errno);
2132                 }
2133
2134                 local_smb_fname = synthetic_smb_fname(talloc_tos(),
2135                                         final_component,
2136                                         NULL,
2137                                         NULL,
2138                                         fsp->fsp_name->flags);
2139                 if (local_smb_fname == NULL) {
2140                         status = NT_STATUS_NO_MEMORY;
2141                         goto out;
2142                 }
2143
2144                 /* Must use lstat here. */
2145                 ret = SMB_VFS_LSTAT(fsp->conn, local_smb_fname);
2146                 if (ret == -1) {
2147                         status = map_nt_error_from_unix(errno);
2148                         goto out;
2149                 }
2150
2151                 /* Ensure it matches the fsp stat. */
2152                 if (!check_same_stat(&local_smb_fname->st,
2153                                 &fsp->fsp_name->st)) {
2154                         status = NT_STATUS_ACCESS_DENIED;
2155                         goto out;
2156                 }
2157
2158                 ret = SMB_VFS_LCHOWN(fsp->conn,
2159                         local_smb_fname,
2160                         uid, gid);
2161
2162                 if (ret == 0) {
2163                         status = NT_STATUS_OK;
2164                 } else {
2165                         status = map_nt_error_from_unix(errno);
2166                 }
2167
2168   out:
2169
2170                 vfs_ChDir(fsp->conn, saved_dir_fname);
2171                 TALLOC_FREE(local_smb_fname);
2172                 TALLOC_FREE(saved_dir_fname);
2173                 TALLOC_FREE(parent_dir);
2174
2175                 return status;
2176         }
2177
2178         if (fsp->posix_flags & FSP_POSIX_FLAGS_OPEN) {
2179                 ret = SMB_VFS_LCHOWN(fsp->conn,
2180                         fsp->fsp_name,
2181                         uid, gid);
2182         } else {
2183                 ret = SMB_VFS_CHOWN(fsp->conn,
2184                         fsp->fsp_name,
2185                         uid, gid);
2186         }
2187
2188         if (ret == 0) {
2189                 status = NT_STATUS_OK;
2190         } else {
2191                 status = map_nt_error_from_unix(errno);
2192         }
2193         return status;
2194 }
2195
2196 int smb_vfs_call_chdir(struct vfs_handle_struct *handle,
2197                         const struct smb_filename *smb_fname)
2198 {
2199         VFS_FIND(chdir);
2200         return handle->fns->chdir_fn(handle, smb_fname);
2201 }
2202
2203 struct smb_filename *smb_vfs_call_getwd(struct vfs_handle_struct *handle,
2204                                 TALLOC_CTX *ctx)
2205 {
2206         VFS_FIND(getwd);
2207         return handle->fns->getwd_fn(handle, ctx);
2208 }
2209
2210 int smb_vfs_call_ntimes(struct vfs_handle_struct *handle,
2211                         const struct smb_filename *smb_fname,
2212                         struct smb_file_time *ft)
2213 {
2214         VFS_FIND(ntimes);
2215         return handle->fns->ntimes_fn(handle, smb_fname, ft);
2216 }
2217
2218 int smb_vfs_call_ftruncate(struct vfs_handle_struct *handle,
2219                            struct files_struct *fsp, off_t offset)
2220 {
2221         VFS_FIND(ftruncate);
2222         return handle->fns->ftruncate_fn(handle, fsp, offset);
2223 }
2224
2225 int smb_vfs_call_fallocate(struct vfs_handle_struct *handle,
2226                            struct files_struct *fsp,
2227                            uint32_t mode,
2228                            off_t offset,
2229                            off_t len)
2230 {
2231         VFS_FIND(fallocate);
2232         return handle->fns->fallocate_fn(handle, fsp, mode, offset, len);
2233 }
2234
2235 int smb_vfs_call_kernel_flock(struct vfs_handle_struct *handle,
2236                               struct files_struct *fsp, uint32_t share_mode,
2237                               uint32_t access_mask)
2238 {
2239         VFS_FIND(kernel_flock);
2240         return handle->fns->kernel_flock_fn(handle, fsp, share_mode,
2241                                          access_mask);
2242 }
2243
2244 int smb_vfs_call_linux_setlease(struct vfs_handle_struct *handle,
2245                                 struct files_struct *fsp, int leasetype)
2246 {
2247         VFS_FIND(linux_setlease);
2248         return handle->fns->linux_setlease_fn(handle, fsp, leasetype);
2249 }
2250
2251 int smb_vfs_call_symlink(struct vfs_handle_struct *handle,
2252                         const char *link_target,
2253                         const struct smb_filename *new_smb_fname)
2254 {
2255         VFS_FIND(symlink);
2256         return handle->fns->symlink_fn(handle, link_target, new_smb_fname);
2257 }
2258
2259 int smb_vfs_call_readlink(struct vfs_handle_struct *handle,
2260                         const struct smb_filename *smb_fname,
2261                         char *buf,
2262                         size_t bufsiz)
2263 {
2264         VFS_FIND(readlink);
2265         return handle->fns->readlink_fn(handle, smb_fname, buf, bufsiz);
2266 }
2267
2268 int smb_vfs_call_link(struct vfs_handle_struct *handle,
2269                         const struct smb_filename *old_smb_fname,
2270                         const struct smb_filename *new_smb_fname)
2271 {
2272         VFS_FIND(link);
2273         return handle->fns->link_fn(handle, old_smb_fname, new_smb_fname);
2274 }
2275
2276 int smb_vfs_call_mknod(struct vfs_handle_struct *handle,
2277                         const struct smb_filename *smb_fname,
2278                         mode_t mode,
2279                         SMB_DEV_T dev)
2280 {
2281         VFS_FIND(mknod);
2282         return handle->fns->mknod_fn(handle, smb_fname, mode, dev);
2283 }
2284
2285 struct smb_filename *smb_vfs_call_realpath(struct vfs_handle_struct *handle,
2286                         TALLOC_CTX *ctx,
2287                         const struct smb_filename *smb_fname)
2288 {
2289         VFS_FIND(realpath);
2290         return handle->fns->realpath_fn(handle, ctx, smb_fname);
2291 }
2292
2293 int smb_vfs_call_chflags(struct vfs_handle_struct *handle,
2294                         const struct smb_filename *smb_fname,
2295                         unsigned int flags)
2296 {
2297         VFS_FIND(chflags);
2298         return handle->fns->chflags_fn(handle, smb_fname, flags);
2299 }
2300
2301 struct file_id smb_vfs_call_file_id_create(struct vfs_handle_struct *handle,
2302                                            const SMB_STRUCT_STAT *sbuf)
2303 {
2304         VFS_FIND(file_id_create);
2305         return handle->fns->file_id_create_fn(handle, sbuf);
2306 }
2307
2308 NTSTATUS smb_vfs_call_streaminfo(struct vfs_handle_struct *handle,
2309                                  struct files_struct *fsp,
2310                                  const struct smb_filename *smb_fname,
2311                                  TALLOC_CTX *mem_ctx,
2312                                  unsigned int *num_streams,
2313                                  struct stream_struct **streams)
2314 {
2315         VFS_FIND(streaminfo);
2316         return handle->fns->streaminfo_fn(handle, fsp, smb_fname, mem_ctx,
2317                                           num_streams, streams);
2318 }
2319
2320 int smb_vfs_call_get_real_filename(struct vfs_handle_struct *handle,
2321                                    const char *path, const char *name,
2322                                    TALLOC_CTX *mem_ctx, char **found_name)
2323 {
2324         VFS_FIND(get_real_filename);
2325         return handle->fns->get_real_filename_fn(handle, path, name, mem_ctx,
2326                                                  found_name);
2327 }
2328
2329 const char *smb_vfs_call_connectpath(struct vfs_handle_struct *handle,
2330                                  const struct smb_filename *smb_fname)
2331 {
2332         VFS_FIND(connectpath);
2333         return handle->fns->connectpath_fn(handle, smb_fname);
2334 }
2335
2336 bool smb_vfs_call_strict_lock_check(struct vfs_handle_struct *handle,
2337                                     struct files_struct *fsp,
2338                                     struct lock_struct *plock)
2339 {
2340         VFS_FIND(strict_lock_check);
2341         return handle->fns->strict_lock_check_fn(handle, fsp, plock);
2342 }
2343
2344 NTSTATUS smb_vfs_call_translate_name(struct vfs_handle_struct *handle,
2345                                      const char *name,
2346                                      enum vfs_translate_direction direction,
2347                                      TALLOC_CTX *mem_ctx,
2348                                      char **mapped_name)
2349 {
2350         VFS_FIND(translate_name);
2351         return handle->fns->translate_name_fn(handle, name, direction, mem_ctx,
2352                                               mapped_name);
2353 }
2354
2355 NTSTATUS smb_vfs_call_fsctl(struct vfs_handle_struct *handle,
2356                             struct files_struct *fsp,
2357                             TALLOC_CTX *ctx,
2358                             uint32_t function,
2359                             uint16_t req_flags,
2360                             const uint8_t *in_data,
2361                             uint32_t in_len,
2362                             uint8_t **out_data,
2363                             uint32_t max_out_len,
2364                             uint32_t *out_len)
2365 {
2366         VFS_FIND(fsctl);
2367         return handle->fns->fsctl_fn(handle, fsp, ctx, function, req_flags,
2368                                      in_data, in_len, out_data, max_out_len,
2369                                      out_len);
2370 }
2371
2372 NTSTATUS smb_vfs_call_get_dos_attributes(struct vfs_handle_struct *handle,
2373                                          struct smb_filename *smb_fname,
2374                                          uint32_t *dosmode)
2375 {
2376         VFS_FIND(get_dos_attributes);
2377         return handle->fns->get_dos_attributes_fn(handle, smb_fname, dosmode);
2378 }
2379
2380 NTSTATUS smb_vfs_call_fget_dos_attributes(struct vfs_handle_struct *handle,
2381                                           struct files_struct *fsp,
2382                                           uint32_t *dosmode)
2383 {
2384         VFS_FIND(fget_dos_attributes);
2385         return handle->fns->fget_dos_attributes_fn(handle, fsp, dosmode);
2386 }
2387
2388 NTSTATUS smb_vfs_call_set_dos_attributes(struct vfs_handle_struct *handle,
2389                                          const struct smb_filename *smb_fname,
2390                                          uint32_t dosmode)
2391 {
2392         VFS_FIND(set_dos_attributes);
2393         return handle->fns->set_dos_attributes_fn(handle, smb_fname, dosmode);
2394 }
2395
2396 NTSTATUS smb_vfs_call_fset_dos_attributes(struct vfs_handle_struct *handle,
2397                                           struct files_struct *fsp,
2398                                           uint32_t dosmode)
2399 {
2400         VFS_FIND(set_dos_attributes);
2401         return handle->fns->fset_dos_attributes_fn(handle, fsp, dosmode);
2402 }
2403
2404 struct tevent_req *smb_vfs_call_offload_read_send(TALLOC_CTX *mem_ctx,
2405                                                   struct tevent_context *ev,
2406                                                   struct vfs_handle_struct *handle,
2407                                                   struct files_struct *fsp,
2408                                                   uint32_t fsctl,
2409                                                   uint32_t ttl,
2410                                                   off_t offset,
2411                                                   size_t to_copy)
2412 {
2413         VFS_FIND(offload_read_send);
2414         return handle->fns->offload_read_send_fn(mem_ctx, ev, handle,
2415                                                  fsp, fsctl,
2416                                                  ttl, offset, to_copy);
2417 }
2418
2419 NTSTATUS smb_vfs_call_offload_read_recv(struct tevent_req *req,
2420                                         struct vfs_handle_struct *handle,
2421                                         TALLOC_CTX *mem_ctx,
2422                                         DATA_BLOB *token_blob)
2423 {
2424         VFS_FIND(offload_read_recv);
2425         return handle->fns->offload_read_recv_fn(req, handle, mem_ctx, token_blob);
2426 }
2427
2428 struct tevent_req *smb_vfs_call_offload_write_send(struct vfs_handle_struct *handle,
2429                                                    TALLOC_CTX *mem_ctx,
2430                                                    struct tevent_context *ev,
2431                                                    uint32_t fsctl,
2432                                                    DATA_BLOB *token,
2433                                                    off_t transfer_offset,
2434                                                    struct files_struct *dest_fsp,
2435                                                    off_t dest_off,
2436                                                    off_t num)
2437 {
2438         VFS_FIND(offload_write_send);
2439         return handle->fns->offload_write_send_fn(handle, mem_ctx, ev, fsctl,
2440                                                token, transfer_offset,
2441                                                dest_fsp, dest_off, num);
2442 }
2443
2444 NTSTATUS smb_vfs_call_offload_write_recv(struct vfs_handle_struct *handle,
2445                                          struct tevent_req *req,
2446                                          off_t *copied)
2447 {
2448         VFS_FIND(offload_write_recv);
2449         return handle->fns->offload_write_recv_fn(handle, req, copied);
2450 }
2451
2452 NTSTATUS smb_vfs_call_get_compression(vfs_handle_struct *handle,
2453                                       TALLOC_CTX *mem_ctx,
2454                                       struct files_struct *fsp,
2455                                       struct smb_filename *smb_fname,
2456                                       uint16_t *_compression_fmt)
2457 {
2458         VFS_FIND(get_compression);
2459         return handle->fns->get_compression_fn(handle, mem_ctx, fsp, smb_fname,
2460                                                _compression_fmt);
2461 }
2462
2463 NTSTATUS smb_vfs_call_set_compression(vfs_handle_struct *handle,
2464                                       TALLOC_CTX *mem_ctx,
2465                                       struct files_struct *fsp,
2466                                       uint16_t compression_fmt)
2467 {
2468         VFS_FIND(set_compression);
2469         return handle->fns->set_compression_fn(handle, mem_ctx, fsp,
2470                                                compression_fmt);
2471 }
2472
2473 NTSTATUS smb_vfs_call_snap_check_path(vfs_handle_struct *handle,
2474                                       TALLOC_CTX *mem_ctx,
2475                                       const char *service_path,
2476                                       char **base_volume)
2477 {
2478         VFS_FIND(snap_check_path);
2479         return handle->fns->snap_check_path_fn(handle, mem_ctx, service_path,
2480                                                base_volume);
2481 }
2482
2483 NTSTATUS smb_vfs_call_snap_create(struct vfs_handle_struct *handle,
2484                                   TALLOC_CTX *mem_ctx,
2485                                   const char *base_volume,
2486                                   time_t *tstamp,
2487                                   bool rw,
2488                                   char **base_path,
2489                                   char **snap_path)
2490 {
2491         VFS_FIND(snap_create);
2492         return handle->fns->snap_create_fn(handle, mem_ctx, base_volume, tstamp,
2493                                            rw, base_path, snap_path);
2494 }
2495
2496 NTSTATUS smb_vfs_call_snap_delete(struct vfs_handle_struct *handle,
2497                                   TALLOC_CTX *mem_ctx,
2498                                   char *base_path,
2499                                   char *snap_path)
2500 {
2501         VFS_FIND(snap_delete);
2502         return handle->fns->snap_delete_fn(handle, mem_ctx, base_path,
2503                                            snap_path);
2504 }
2505
2506 NTSTATUS smb_vfs_call_fget_nt_acl(struct vfs_handle_struct *handle,
2507                                   struct files_struct *fsp,
2508                                   uint32_t security_info,
2509                                   TALLOC_CTX *mem_ctx,
2510                                   struct security_descriptor **ppdesc)
2511 {
2512         VFS_FIND(fget_nt_acl);
2513         return handle->fns->fget_nt_acl_fn(handle, fsp, security_info,
2514                                            mem_ctx, ppdesc);
2515 }
2516
2517 NTSTATUS smb_vfs_call_get_nt_acl(struct vfs_handle_struct *handle,
2518                                  const struct smb_filename *smb_fname,
2519                                  uint32_t security_info,
2520                                  TALLOC_CTX *mem_ctx,
2521                                  struct security_descriptor **ppdesc)
2522 {
2523         VFS_FIND(get_nt_acl);
2524         return handle->fns->get_nt_acl_fn(handle,
2525                                 smb_fname,
2526                                 security_info,
2527                                 mem_ctx,
2528                                 ppdesc);
2529 }
2530
2531 NTSTATUS smb_vfs_call_fset_nt_acl(struct vfs_handle_struct *handle,
2532                                   struct files_struct *fsp,
2533                                   uint32_t security_info_sent,
2534                                   const struct security_descriptor *psd)
2535 {
2536         VFS_FIND(fset_nt_acl);
2537         return handle->fns->fset_nt_acl_fn(handle, fsp, security_info_sent,
2538                                            psd);
2539 }
2540
2541 NTSTATUS smb_vfs_call_audit_file(struct vfs_handle_struct *handle,
2542                                  struct smb_filename *file,
2543                                  struct security_acl *sacl,
2544                                  uint32_t access_requested,
2545                                  uint32_t access_denied)
2546 {
2547         VFS_FIND(audit_file);
2548         return handle->fns->audit_file_fn(handle,
2549                                           file,
2550                                           sacl,
2551                                           access_requested,
2552                                           access_denied);
2553 }
2554
2555 int smb_vfs_call_chmod_acl(struct vfs_handle_struct *handle,
2556                 const struct smb_filename *smb_fname,
2557                 mode_t mode)
2558 {
2559         VFS_FIND(chmod_acl);
2560         return handle->fns->chmod_acl_fn(handle, smb_fname, mode);
2561 }
2562
2563 int smb_vfs_call_fchmod_acl(struct vfs_handle_struct *handle,
2564                             struct files_struct *fsp, mode_t mode)
2565 {
2566         VFS_FIND(fchmod_acl);
2567         return handle->fns->fchmod_acl_fn(handle, fsp, mode);
2568 }
2569
2570 SMB_ACL_T smb_vfs_call_sys_acl_get_file(struct vfs_handle_struct *handle,
2571                                         const struct smb_filename *smb_fname,
2572                                         SMB_ACL_TYPE_T type,
2573                                         TALLOC_CTX *mem_ctx)
2574 {
2575         VFS_FIND(sys_acl_get_file);
2576         return handle->fns->sys_acl_get_file_fn(handle, smb_fname, type, mem_ctx);
2577 }
2578
2579 SMB_ACL_T smb_vfs_call_sys_acl_get_fd(struct vfs_handle_struct *handle,
2580                                       struct files_struct *fsp,
2581                                       TALLOC_CTX *mem_ctx)
2582 {
2583         VFS_FIND(sys_acl_get_fd);
2584         return handle->fns->sys_acl_get_fd_fn(handle, fsp, mem_ctx);
2585 }
2586
2587 int smb_vfs_call_sys_acl_blob_get_file(struct vfs_handle_struct *handle,
2588                                 const struct smb_filename *smb_fname,
2589                                 TALLOC_CTX *mem_ctx,
2590                                 char **blob_description,
2591                                 DATA_BLOB *blob)
2592 {
2593         VFS_FIND(sys_acl_blob_get_file);
2594         return handle->fns->sys_acl_blob_get_file_fn(handle, smb_fname,
2595                         mem_ctx, blob_description, blob);
2596 }
2597
2598 int smb_vfs_call_sys_acl_blob_get_fd(struct vfs_handle_struct *handle,
2599                                      struct files_struct *fsp,
2600                                      TALLOC_CTX *mem_ctx,
2601                                      char **blob_description,
2602                                      DATA_BLOB *blob)
2603 {
2604         VFS_FIND(sys_acl_blob_get_fd);
2605         return handle->fns->sys_acl_blob_get_fd_fn(handle, fsp, mem_ctx, blob_description, blob);
2606 }
2607
2608 int smb_vfs_call_sys_acl_set_file(struct vfs_handle_struct *handle,
2609                                 const struct smb_filename *smb_fname,
2610                                 SMB_ACL_TYPE_T acltype,
2611                                 SMB_ACL_T theacl)
2612 {
2613         VFS_FIND(sys_acl_set_file);
2614         return handle->fns->sys_acl_set_file_fn(handle, smb_fname,
2615                                 acltype, theacl);
2616 }
2617
2618 int smb_vfs_call_sys_acl_set_fd(struct vfs_handle_struct *handle,
2619                                 struct files_struct *fsp, SMB_ACL_T theacl)
2620 {
2621         VFS_FIND(sys_acl_set_fd);
2622         return handle->fns->sys_acl_set_fd_fn(handle, fsp, theacl);
2623 }
2624
2625 int smb_vfs_call_sys_acl_delete_def_file(struct vfs_handle_struct *handle,
2626                                 const struct smb_filename *smb_fname)
2627 {
2628         VFS_FIND(sys_acl_delete_def_file);
2629         return handle->fns->sys_acl_delete_def_file_fn(handle, smb_fname);
2630 }
2631
2632 ssize_t smb_vfs_call_getxattr(struct vfs_handle_struct *handle,
2633                                 const struct smb_filename *smb_fname,
2634                                 const char *name,
2635                                 void *value,
2636                                 size_t size)
2637 {
2638         VFS_FIND(getxattr);
2639         return handle->fns->getxattr_fn(handle, smb_fname, name, value, size);
2640 }
2641
2642 ssize_t smb_vfs_call_fgetxattr(struct vfs_handle_struct *handle,
2643                                struct files_struct *fsp, const char *name,
2644                                void *value, size_t size)
2645 {
2646         VFS_FIND(fgetxattr);
2647         return handle->fns->fgetxattr_fn(handle, fsp, name, value, size);
2648 }
2649
2650 ssize_t smb_vfs_call_listxattr(struct vfs_handle_struct *handle,
2651                                 const struct smb_filename *smb_fname,
2652                                 char *list,
2653                                 size_t size)
2654 {
2655         VFS_FIND(listxattr);
2656         return handle->fns->listxattr_fn(handle, smb_fname, list, size);
2657 }
2658
2659 ssize_t smb_vfs_call_flistxattr(struct vfs_handle_struct *handle,
2660                                 struct files_struct *fsp, char *list,
2661                                 size_t size)
2662 {
2663         VFS_FIND(flistxattr);
2664         return handle->fns->flistxattr_fn(handle, fsp, list, size);
2665 }
2666
2667 int smb_vfs_call_removexattr(struct vfs_handle_struct *handle,
2668                                 const struct smb_filename *smb_fname,
2669                                 const char *name)
2670 {
2671         VFS_FIND(removexattr);
2672         return handle->fns->removexattr_fn(handle, smb_fname, name);
2673 }
2674
2675 int smb_vfs_call_fremovexattr(struct vfs_handle_struct *handle,
2676                               struct files_struct *fsp, const char *name)
2677 {
2678         VFS_FIND(fremovexattr);
2679         return handle->fns->fremovexattr_fn(handle, fsp, name);
2680 }
2681
2682 int smb_vfs_call_setxattr(struct vfs_handle_struct *handle,
2683                         const struct smb_filename *smb_fname,
2684                         const char *name,
2685                         const void *value,
2686                         size_t size,
2687                         int flags)
2688 {
2689         VFS_FIND(setxattr);
2690         return handle->fns->setxattr_fn(handle, smb_fname,
2691                         name, value, size, flags);
2692 }
2693
2694 int smb_vfs_call_fsetxattr(struct vfs_handle_struct *handle,
2695                            struct files_struct *fsp, const char *name,
2696                            const void *value, size_t size, int flags)
2697 {
2698         VFS_FIND(fsetxattr);
2699         return handle->fns->fsetxattr_fn(handle, fsp, name, value, size, flags);
2700 }
2701
2702 bool smb_vfs_call_aio_force(struct vfs_handle_struct *handle,
2703                             struct files_struct *fsp)
2704 {
2705         VFS_FIND(aio_force);
2706         return handle->fns->aio_force_fn(handle, fsp);
2707 }
2708
2709 NTSTATUS smb_vfs_call_durable_cookie(struct vfs_handle_struct *handle,
2710                                      struct files_struct *fsp,
2711                                      TALLOC_CTX *mem_ctx,
2712                                      DATA_BLOB *cookie)
2713 {
2714         VFS_FIND(durable_cookie);
2715         return handle->fns->durable_cookie_fn(handle, fsp, mem_ctx, cookie);
2716 }
2717
2718 NTSTATUS smb_vfs_call_durable_disconnect(struct vfs_handle_struct *handle,
2719                                          struct files_struct *fsp,
2720                                          const DATA_BLOB old_cookie,
2721                                          TALLOC_CTX *mem_ctx,
2722                                          DATA_BLOB *new_cookie)
2723 {
2724         VFS_FIND(durable_disconnect);
2725         return handle->fns->durable_disconnect_fn(handle, fsp, old_cookie,
2726                                                   mem_ctx, new_cookie);
2727 }
2728
2729 NTSTATUS smb_vfs_call_durable_reconnect(struct vfs_handle_struct *handle,
2730                                         struct smb_request *smb1req,
2731                                         struct smbXsrv_open *op,
2732                                         const DATA_BLOB old_cookie,
2733                                         TALLOC_CTX *mem_ctx,
2734                                         struct files_struct **fsp,
2735                                         DATA_BLOB *new_cookie)
2736 {
2737         VFS_FIND(durable_reconnect);
2738         return handle->fns->durable_reconnect_fn(handle, smb1req, op,
2739                                                  old_cookie, mem_ctx, fsp,
2740                                                  new_cookie);
2741 }
2742
2743 NTSTATUS smb_vfs_call_readdir_attr(struct vfs_handle_struct *handle,
2744                                    const struct smb_filename *fname,
2745                                    TALLOC_CTX *mem_ctx,
2746                                    struct readdir_attr_data **attr_data)
2747 {
2748         VFS_FIND(readdir_attr);
2749         return handle->fns->readdir_attr_fn(handle, fname, mem_ctx, attr_data);
2750 }