source3/modules/vfs_default.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Wrap disk only vfs functions to sidestep dodgy compilers.
   4    Copyright (C) Tim Potter 1998
   5    Copyright (C) Jeremy Allison 2007
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "includes.h"
  22 #include "system/time.h"
  23 #include "system/filesys.h"
  24 #include "smbd/smbd.h"
  25 #include "smbd/globals.h"
  26 #include "ntioctl.h"
  27 #include "smbprofile.h"
  28 #include "../libcli/security/security.h"
  29 #include "passdb/lookup_sid.h"
  30 #include "source3/include/msdfs.h"
  31 #include "librpc/gen_ndr/ndr_dfsblobs.h"
  32 #include "lib/util/tevent_unix.h"
  33 #include "lib/asys/asys.h"
  34 #include "lib/util/tevent_ntstatus.h"
  35
  36 #undef DBGC_CLASS
  37 #define DBGC_CLASS DBGC_VFS
  38
  39 /* Check for NULL pointer parameters in vfswrap_* functions */
  40
  41 /* We don't want to have NULL function pointers lying around.  Someone
  42    is sure to try and execute them.  These stubs are used to prevent
  43    this possibility. */
  44
  45 static int vfswrap_connect(vfs_handle_struct *handle, const char *service, const char *user)
  46 {
  47     return 0;    /* Return >= 0 for success */
  48 }
  49
  50 static void vfswrap_disconnect(vfs_handle_struct *handle)
  51 {
  52 }
  53
  54 /* Disk operations */
  55
  56 static uint64_t vfswrap_disk_free(vfs_handle_struct *handle, const char *path, bool small_query, uint64_t *bsize,
  57                                uint64_t *dfree, uint64_t *dsize)
  58 {
  59         uint64_t result;
  60
  61         result = sys_disk_free(handle->conn, path, small_query, bsize, dfree, dsize);
  62         return result;
  63 }
  64
  65 static int vfswrap_get_quota(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
  66 {
  67 #ifdef HAVE_SYS_QUOTAS
  68         int result;
  69
  70         START_PROFILE(syscall_get_quota);
  71         result = sys_get_quota(handle->conn->connectpath, qtype, id, qt);
  72         END_PROFILE(syscall_get_quota);
  73         return result;
  74 #else
  75         errno = ENOSYS;
  76         return -1;
  77 #endif
  78 }
  79
  80 static int vfswrap_set_quota(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
  81 {
  82 #ifdef HAVE_SYS_QUOTAS
  83         int result;
  84
  85         START_PROFILE(syscall_set_quota);
  86         result = sys_set_quota(handle->conn->connectpath, qtype, id, qt);
  87         END_PROFILE(syscall_set_quota);
  88         return result;
  89 #else
  90         errno = ENOSYS;
  91         return -1;
  92 #endif
  93 }
  94
  95 static int vfswrap_get_shadow_copy_data(struct vfs_handle_struct *handle,
  96                                         struct files_struct *fsp,
  97                                         struct shadow_copy_data *shadow_copy_data,
  98                                         bool labels)
  99 {
 100         errno = ENOSYS;
 101         return -1;  /* Not implemented. */
 102 }
 103
 104 static int vfswrap_statvfs(struct vfs_handle_struct *handle, const char *path, vfs_statvfs_struct *statbuf)
 105 {
 106         return sys_statvfs(path, statbuf);
 107 }
 108
 109 static uint32_t vfswrap_fs_capabilities(struct vfs_handle_struct *handle,
 110                 enum timestamp_set_resolution *p_ts_res)
 111 {
 112         connection_struct *conn = handle->conn;
 113         uint32_t caps = FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
 114         struct smb_filename *smb_fname_cpath = NULL;
 115         struct vfs_statvfs_struct statbuf;
 116         int ret;
 117
 118         ZERO_STRUCT(statbuf);
 119         ret = sys_statvfs(conn->connectpath, &statbuf);
 120         if (ret == 0) {
 121                 caps = statbuf.FsCapabilities;
 122         }
 123
 124         *p_ts_res = TIMESTAMP_SET_SECONDS;
 125
 126         /* Work out what timestamp resolution we can
 127          * use when setting a timestamp. */
 128
 129         smb_fname_cpath = synthetic_smb_fname(talloc_tos(), conn->connectpath,
 130                                               NULL, NULL);
 131         if (smb_fname_cpath == NULL) {
 132                 return caps;
 133         }
 134
 135         ret = SMB_VFS_STAT(conn, smb_fname_cpath);
 136         if (ret == -1) {
 137                 TALLOC_FREE(smb_fname_cpath);
 138                 return caps;
 139         }
 140
 141         if (smb_fname_cpath->st.st_ex_mtime.tv_nsec ||
 142                         smb_fname_cpath->st.st_ex_atime.tv_nsec ||
 143                         smb_fname_cpath->st.st_ex_ctime.tv_nsec) {
 144                 /* If any of the normal UNIX directory timestamps
 145                  * have a non-zero tv_nsec component assume
 146                  * we might be able to set sub-second timestamps.
 147                  * See what filetime set primitives we have.
 148                  */
 149 #if defined(HAVE_UTIMENSAT)
 150                 *p_ts_res = TIMESTAMP_SET_NT_OR_BETTER;
 151 #elif defined(HAVE_UTIMES)
 152                 /* utimes allows msec timestamps to be set. */
 153                 *p_ts_res = TIMESTAMP_SET_MSEC;
 154 #elif defined(HAVE_UTIME)
 155                 /* utime only allows sec timestamps to be set. */
 156                 *p_ts_res = TIMESTAMP_SET_SECONDS;
 157 #endif
 158
 159                 DEBUG(10,("vfswrap_fs_capabilities: timestamp "
 160                         "resolution of %s "
 161                         "available on share %s, directory %s\n",
 162                         *p_ts_res == TIMESTAMP_SET_MSEC ? "msec" : "sec",
 163                         lp_servicename(talloc_tos(), conn->params->service),
 164                         conn->connectpath ));
 165         }
 166         TALLOC_FREE(smb_fname_cpath);
 167         return caps;
 168 }
 169
 170 static NTSTATUS vfswrap_get_dfs_referrals(struct vfs_handle_struct *handle,
 171                                           struct dfs_GetDFSReferral *r)
 172 {
 173         struct junction_map *junction = NULL;
 174         int consumedcnt = 0;
 175         bool self_referral = false;
 176         char *pathnamep = NULL;
 177         char *local_dfs_path = NULL;
 178         NTSTATUS status;
 179         int i;
 180         uint16_t max_referral_level = r->in.req.max_referral_level;
 181
 182         if (DEBUGLVL(10)) {
 183                 NDR_PRINT_IN_DEBUG(dfs_GetDFSReferral, r);
 184         }
 185
 186         /* get the junction entry */
 187         if (r->in.req.servername == NULL) {
 188                 return NT_STATUS_NOT_FOUND;
 189         }
 190
 191         /*
 192          * Trim pathname sent by client so it begins with only one backslash.
 193          * Two backslashes confuse some dfs clients
 194          */
 195
 196         local_dfs_path = talloc_strdup(r, r->in.req.servername);
 197         if (local_dfs_path == NULL) {
 198                 return NT_STATUS_NO_MEMORY;
 199         }
 200         pathnamep = local_dfs_path;
 201         while (IS_DIRECTORY_SEP(pathnamep[0]) &&
 202                IS_DIRECTORY_SEP(pathnamep[1])) {
 203                 pathnamep++;
 204         }
 205
 206         junction = talloc_zero(r, struct junction_map);
 207         if (junction == NULL) {
 208                 return NT_STATUS_NO_MEMORY;
 209         }
 210
 211         /* The following call can change cwd. */
 212         status = get_referred_path(r, pathnamep,
 213                                    !handle->conn->sconn->using_smb2,
 214                                    junction, &consumedcnt, &self_referral);
 215         if (!NT_STATUS_IS_OK(status)) {
 216                 vfs_ChDir(handle->conn, handle->conn->connectpath);
 217                 return status;
 218         }
 219         vfs_ChDir(handle->conn, handle->conn->connectpath);
 220
 221         if (!self_referral) {
 222                 pathnamep[consumedcnt] = '\0';
 223
 224                 if (DEBUGLVL(3)) {
 225                         dbgtext("setup_dfs_referral: Path %s to "
 226                                 "alternate path(s):",
 227                                 pathnamep);
 228                         for (i=0; i < junction->referral_count; i++) {
 229                                 dbgtext(" %s",
 230                                 junction->referral_list[i].alternate_path);
 231                         }
 232                         dbgtext(".\n");
 233                 }
 234         }
 235
 236         if (r->in.req.max_referral_level <= 2) {
 237                 max_referral_level = 2;
 238         }
 239         if (r->in.req.max_referral_level >= 3) {
 240                 max_referral_level = 3;
 241         }
 242
 243         r->out.resp = talloc_zero(r, struct dfs_referral_resp);
 244         if (r->out.resp == NULL) {
 245                 return NT_STATUS_NO_MEMORY;
 246         }
 247
 248         r->out.resp->path_consumed = strlen_m(pathnamep) * 2;
 249         r->out.resp->nb_referrals = junction->referral_count;
 250
 251         r->out.resp->header_flags = DFS_HEADER_FLAG_STORAGE_SVR;
 252         if (self_referral) {
 253                 r->out.resp->header_flags |= DFS_HEADER_FLAG_REFERAL_SVR;
 254         }
 255
 256         r->out.resp->referral_entries = talloc_zero_array(r,
 257                                 struct dfs_referral_type,
 258                                 r->out.resp->nb_referrals);
 259         if (r->out.resp->referral_entries == NULL) {
 260                 return NT_STATUS_NO_MEMORY;
 261         }
 262
 263         switch (max_referral_level) {
 264         case 2:
 265                 for(i=0; i < junction->referral_count; i++) {
 266                         struct referral *ref = &junction->referral_list[i];
 267                         TALLOC_CTX *mem_ctx = r->out.resp->referral_entries;
 268                         struct dfs_referral_type *t =
 269                                 &r->out.resp->referral_entries[i];
 270                         struct dfs_referral_v2 *v2 = &t->referral.v2;
 271
 272                         t->version = 2;
 273                         v2->size = VERSION2_REFERRAL_SIZE;
 274                         if (self_referral) {
 275                                 v2->server_type = DFS_SERVER_ROOT;
 276                         } else {
 277                                 v2->server_type = DFS_SERVER_NON_ROOT;
 278                         }
 279                         v2->entry_flags = 0;
 280                         v2->proximity = ref->proximity;
 281                         v2->ttl = ref->ttl;
 282                         v2->DFS_path = talloc_strdup(mem_ctx, pathnamep);
 283                         if (v2->DFS_path == NULL) {
 284                                 return NT_STATUS_NO_MEMORY;
 285                         }
 286                         v2->DFS_alt_path = talloc_strdup(mem_ctx, pathnamep);
 287                         if (v2->DFS_alt_path == NULL) {
 288                                 return NT_STATUS_NO_MEMORY;
 289                         }
 290                         v2->netw_address = talloc_strdup(mem_ctx,
 291                                                          ref->alternate_path);
 292                         if (v2->netw_address == NULL) {
 293                                 return NT_STATUS_NO_MEMORY;
 294                         }
 295                 }
 296
 297                 break;
 298         case 3:
 299                 for(i=0; i < junction->referral_count; i++) {
 300                         struct referral *ref = &junction->referral_list[i];
 301                         TALLOC_CTX *mem_ctx = r->out.resp->referral_entries;
 302                         struct dfs_referral_type *t =
 303                                 &r->out.resp->referral_entries[i];
 304                         struct dfs_referral_v3 *v3 = &t->referral.v3;
 305                         struct dfs_normal_referral *r1 = &v3->referrals.r1;
 306
 307                         t->version = 3;
 308                         v3->size = VERSION3_REFERRAL_SIZE;
 309                         if (self_referral) {
 310                                 v3->server_type = DFS_SERVER_ROOT;
 311                         } else {
 312                                 v3->server_type = DFS_SERVER_NON_ROOT;
 313                         }
 314                         v3->entry_flags = 0;
 315                         v3->ttl = ref->ttl;
 316                         r1->DFS_path = talloc_strdup(mem_ctx, pathnamep);
 317                         if (r1->DFS_path == NULL) {
 318                                 return NT_STATUS_NO_MEMORY;
 319                         }
 320                         r1->DFS_alt_path = talloc_strdup(mem_ctx, pathnamep);
 321                         if (r1->DFS_alt_path == NULL) {
 322                                 return NT_STATUS_NO_MEMORY;
 323                         }
 324                         r1->netw_address = talloc_strdup(mem_ctx,
 325                                                          ref->alternate_path);
 326                         if (r1->netw_address == NULL) {
 327                                 return NT_STATUS_NO_MEMORY;
 328                         }
 329                 }
 330                 break;
 331         default:
 332                 DEBUG(0,("setup_dfs_referral: Invalid dfs referral "
 333                         "version: %d\n",
 334                         max_referral_level));
 335                 return NT_STATUS_INVALID_LEVEL;
 336         }
 337
 338         if (DEBUGLVL(10)) {
 339                 NDR_PRINT_OUT_DEBUG(dfs_GetDFSReferral, r);
 340         }
 341
 342         return NT_STATUS_OK;
 343 }
 344
 345 /* Directory operations */
 346
 347 static DIR *vfswrap_opendir(vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attr)
 348 {
 349         DIR *result;
 350
 351         START_PROFILE(syscall_opendir);
 352         result = opendir(fname);
 353         END_PROFILE(syscall_opendir);
 354         return result;
 355 }
 356
 357 static DIR *vfswrap_fdopendir(vfs_handle_struct *handle,
 358                         files_struct *fsp,
 359                         const char *mask,
 360                         uint32 attr)
 361 {
 362         DIR *result;
 363
 364         START_PROFILE(syscall_fdopendir);
 365         result = sys_fdopendir(fsp->fh->fd);
 366         END_PROFILE(syscall_fdopendir);
 367         return result;
 368 }
 369
 370
 371 static struct dirent *vfswrap_readdir(vfs_handle_struct *handle,
 372                                           DIR *dirp,
 373                                           SMB_STRUCT_STAT *sbuf)
 374 {
 375         struct dirent *result;
 376
 377         START_PROFILE(syscall_readdir);
 378         result = readdir(dirp);
 379         END_PROFILE(syscall_readdir);
 380         if (sbuf) {
 381                 /* Default Posix readdir() does not give us stat info.
 382                  * Set to invalid to indicate we didn't return this info. */
 383                 SET_STAT_INVALID(*sbuf);
 384 #if defined(HAVE_DIRFD) && defined(HAVE_FSTATAT)
 385                 if (result != NULL) {
 386                         /* See if we can efficiently return this. */
 387                         struct stat st;
 388                         int flags = (lp_posix_pathnames() ?
 389                                 AT_SYMLINK_NOFOLLOW : 0);
 390                         int ret = fstatat(dirfd(dirp),
 391                                         result->d_name,
 392                                         &st,
 393                                         flags);
 394                         if (ret == 0) {
 395                                 init_stat_ex_from_stat(sbuf,
 396                                         &st,
 397                                         lp_fake_directory_create_times(
 398                                                 SNUM(handle->conn)));
 399                         }
 400                 }
 401 #endif
 402         }
 403         return result;
 404 }
 405
 406 static void vfswrap_seekdir(vfs_handle_struct *handle, DIR *dirp, long offset)
 407 {
 408         START_PROFILE(syscall_seekdir);
 409         seekdir(dirp, offset);
 410         END_PROFILE(syscall_seekdir);
 411 }
 412
 413 static long vfswrap_telldir(vfs_handle_struct *handle, DIR *dirp)
 414 {
 415         long result;
 416         START_PROFILE(syscall_telldir);
 417         result = telldir(dirp);
 418         END_PROFILE(syscall_telldir);
 419         return result;
 420 }
 421
 422 static void vfswrap_rewinddir(vfs_handle_struct *handle, DIR *dirp)
 423 {
 424         START_PROFILE(syscall_rewinddir);
 425         rewinddir(dirp);
 426         END_PROFILE(syscall_rewinddir);
 427 }
 428
 429 static int vfswrap_mkdir(vfs_handle_struct *handle, const char *path, mode_t mode)
 430 {
 431         int result;
 432         bool has_dacl = False;
 433         char *parent = NULL;
 434
 435         START_PROFILE(syscall_mkdir);
 436
 437         if (lp_inherit_acls(SNUM(handle->conn))
 438             && parent_dirname(talloc_tos(), path, &parent, NULL)
 439             && (has_dacl = directory_has_default_acl(handle->conn, parent)))
 440                 mode = (0777 & lp_directory_mask(SNUM(handle->conn)));
 441
 442         TALLOC_FREE(parent);
 443
 444         result = mkdir(path, mode);
 445
 446         if (result == 0 && !has_dacl) {
 447                 /*
 448                  * We need to do this as the default behavior of POSIX ACLs
 449                  * is to set the mask to be the requested group permission
 450                  * bits, not the group permission bits to be the requested
 451                  * group permission bits. This is not what we want, as it will
 452                  * mess up any inherited ACL bits that were set. JRA.
 453                  */
 454                 int saved_errno = errno; /* We may get ENOSYS */
 455                 if ((SMB_VFS_CHMOD_ACL(handle->conn, path, mode) == -1) && (errno == ENOSYS))
 456                         errno = saved_errno;
 457         }
 458
 459         END_PROFILE(syscall_mkdir);
 460         return result;
 461 }
 462
 463 static int vfswrap_rmdir(vfs_handle_struct *handle, const char *path)
 464 {
 465         int result;
 466
 467         START_PROFILE(syscall_rmdir);
 468         result = rmdir(path);
 469         END_PROFILE(syscall_rmdir);
 470         return result;
 471 }
 472
 473 static int vfswrap_closedir(vfs_handle_struct *handle, DIR *dirp)
 474 {
 475         int result;
 476
 477         START_PROFILE(syscall_closedir);
 478         result = closedir(dirp);
 479         END_PROFILE(syscall_closedir);
 480         return result;
 481 }
 482
 483 static void vfswrap_init_search_op(vfs_handle_struct *handle,
 484                                    DIR *dirp)
 485 {
 486         /* Default behavior is a NOOP */
 487 }
 488
 489 /* File operations */
 490
 491 static int vfswrap_open(vfs_handle_struct *handle,
 492                         struct smb_filename *smb_fname,
 493                         files_struct *fsp, int flags, mode_t mode)
 494 {
 495         int result = -1;
 496
 497         START_PROFILE(syscall_open);
 498
 499         if (smb_fname->stream_name) {
 500                 errno = ENOENT;
 501                 goto out;
 502         }
 503
 504         result = open(smb_fname->base_name, flags, mode);
 505  out:
 506         END_PROFILE(syscall_open);
 507         return result;
 508 }
 509
 510 static NTSTATUS vfswrap_create_file(vfs_handle_struct *handle,
 511                                     struct smb_request *req,
 512                                     uint16_t root_dir_fid,
 513                                     struct smb_filename *smb_fname,
 514                                     uint32_t access_mask,
 515                                     uint32_t share_access,
 516                                     uint32_t create_disposition,
 517                                     uint32_t create_options,
 518                                     uint32_t file_attributes,
 519                                     uint32_t oplock_request,
 520                                     uint64_t allocation_size,
 521                                     uint32_t private_flags,
 522                                     struct security_descriptor *sd,
 523                                     struct ea_list *ea_list,
 524                                     files_struct **result,
 525                                     int *pinfo)
 526 {
 527         return create_file_default(handle->conn, req, root_dir_fid, smb_fname,
 528                                    access_mask, share_access,
 529                                    create_disposition, create_options,
 530                                    file_attributes, oplock_request,
 531                                    allocation_size, private_flags,
 532                                    sd, ea_list, result,
 533                                    pinfo);
 534 }
 535
 536 static int vfswrap_close(vfs_handle_struct *handle, files_struct *fsp)
 537 {
 538         int result;
 539
 540         START_PROFILE(syscall_close);
 541         result = fd_close_posix(fsp);
 542         END_PROFILE(syscall_close);
 543         return result;
 544 }
 545
 546 static ssize_t vfswrap_read(vfs_handle_struct *handle, files_struct *fsp, void *data, size_t n)
 547 {
 548         ssize_t result;
 549
 550         START_PROFILE_BYTES(syscall_read, n);
 551         result = sys_read(fsp->fh->fd, data, n);
 552         END_PROFILE(syscall_read);
 553         return result;
 554 }
 555
 556 static ssize_t vfswrap_pread(vfs_handle_struct *handle, files_struct *fsp, void *data,
 557                         size_t n, off_t offset)
 558 {
 559         ssize_t result;
 560
 561 #if defined(HAVE_PREAD) || defined(HAVE_PREAD64)
 562         START_PROFILE_BYTES(syscall_pread, n);
 563         result = sys_pread(fsp->fh->fd, data, n, offset);
 564         END_PROFILE(syscall_pread);
 565
 566         if (result == -1 && errno == ESPIPE) {
 567                 /* Maintain the fiction that pipes can be seeked (sought?) on. */
 568                 result = SMB_VFS_READ(fsp, data, n);
 569                 fsp->fh->pos = 0;
 570         }
 571
 572 #else /* HAVE_PREAD */
 573         off_t   curr;
 574         int lerrno;
 575
 576         curr = SMB_VFS_LSEEK(fsp, 0, SEEK_CUR);
 577         if (curr == -1 && errno == ESPIPE) {
 578                 /* Maintain the fiction that pipes can be seeked (sought?) on. */
 579                 result = SMB_VFS_READ(fsp, data, n);
 580                 fsp->fh->pos = 0;
 581                 return result;
 582         }
 583
 584         if (SMB_VFS_LSEEK(fsp, offset, SEEK_SET) == -1) {
 585                 return -1;
 586         }
 587
 588         errno = 0;
 589         result = SMB_VFS_READ(fsp, data, n);
 590         lerrno = errno;
 591
 592         SMB_VFS_LSEEK(fsp, curr, SEEK_SET);
 593         errno = lerrno;
 594
 595 #endif /* HAVE_PREAD */
 596
 597         return result;
 598 }
 599
 600 static ssize_t vfswrap_write(vfs_handle_struct *handle, files_struct *fsp, const void *data, size_t n)
 601 {
 602         ssize_t result;
 603
 604         START_PROFILE_BYTES(syscall_write, n);
 605         result = sys_write(fsp->fh->fd, data, n);
 606         END_PROFILE(syscall_write);
 607         return result;
 608 }
 609
 610 static ssize_t vfswrap_pwrite(vfs_handle_struct *handle, files_struct *fsp, const void *data,
 611                         size_t n, off_t offset)
 612 {
 613         ssize_t result;
 614
 615 #if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
 616         START_PROFILE_BYTES(syscall_pwrite, n);
 617         result = sys_pwrite(fsp->fh->fd, data, n, offset);
 618         END_PROFILE(syscall_pwrite);
 619
 620         if (result == -1 && errno == ESPIPE) {
 621                 /* Maintain the fiction that pipes can be sought on. */
 622                 result = SMB_VFS_WRITE(fsp, data, n);
 623         }
 624
 625 #else /* HAVE_PWRITE */
 626         off_t   curr;
 627         int         lerrno;
 628
 629         curr = SMB_VFS_LSEEK(fsp, 0, SEEK_CUR);
 630         if (curr == -1) {
 631                 return -1;
 632         }
 633
 634         if (SMB_VFS_LSEEK(fsp, offset, SEEK_SET) == -1) {
 635                 return -1;
 636         }
 637
 638         result = SMB_VFS_WRITE(fsp, data, n);
 639         lerrno = errno;
 640
 641         SMB_VFS_LSEEK(fsp, curr, SEEK_SET);
 642         errno = lerrno;
 643
 644 #endif /* HAVE_PWRITE */
 645
 646         return result;
 647 }
 648
 649 static void vfswrap_asys_finished(struct tevent_context *ev,
 650                                   struct tevent_fd *fde,
 651                                   uint16_t flags, void *p);
 652
 653 static bool vfswrap_init_asys_ctx(struct smbXsrv_connection *conn)
 654 {
 655         int ret;
 656         int fd;
 657
 658         if (conn->asys_ctx != NULL) {
 659                 return true;
 660         }
 661         ret = asys_context_init(&conn->asys_ctx, aio_pending_size);
 662         if (ret != 0) {
 663                 DEBUG(1, ("asys_context_init failed: %s\n", strerror(ret)));
 664                 return false;
 665         }
 666
 667         fd = asys_signalfd(conn->asys_ctx);
 668
 669         set_blocking(fd, false);
 670
 671         conn->asys_fde = tevent_add_fd(conn->ev_ctx, conn, fd,
 672                                        TEVENT_FD_READ,
 673                                        vfswrap_asys_finished,
 674                                        conn->asys_ctx);
 675         if (conn->asys_fde == NULL) {
 676                 DEBUG(1, ("tevent_add_fd failed\n"));
 677                 asys_context_destroy(conn->asys_ctx);
 678                 conn->asys_ctx = NULL;
 679                 return false;
 680         }
 681         return true;
 682 }
 683
 684 struct vfswrap_asys_state {
 685         struct asys_context *asys_ctx;
 686         struct tevent_req *req;
 687         ssize_t ret;
 688         int err;
 689 };
 690
 691 static int vfswrap_asys_state_destructor(struct vfswrap_asys_state *s)
 692 {
 693         asys_cancel(s->asys_ctx, s->req);
 694         return 0;
 695 }
 696
 697 static struct tevent_req *vfswrap_pread_send(struct vfs_handle_struct *handle,
 698                                              TALLOC_CTX *mem_ctx,
 699                                              struct tevent_context *ev,
 700                                              struct files_struct *fsp,
 701                                              void *data,
 702                                              size_t n, off_t offset)
 703 {
 704         struct tevent_req *req;
 705         struct vfswrap_asys_state *state;
 706         int ret;
 707
 708         req = tevent_req_create(mem_ctx, &state, struct vfswrap_asys_state);
 709         if (req == NULL) {
 710                 return NULL;
 711         }
 712         if (!vfswrap_init_asys_ctx(handle->conn->sconn->conn)) {
 713                 tevent_req_oom(req);
 714                 return tevent_req_post(req, ev);
 715         }
 716         state->asys_ctx = handle->conn->sconn->conn->asys_ctx;
 717         state->req = req;
 718
 719         ret = asys_pread(state->asys_ctx, fsp->fh->fd, data, n, offset, req);
 720         if (ret != 0) {
 721                 tevent_req_error(req, ret);
 722                 return tevent_req_post(req, ev);
 723         }
 724         talloc_set_destructor(state, vfswrap_asys_state_destructor);
 725
 726         return req;
 727 }
 728
 729 static struct tevent_req *vfswrap_pwrite_send(struct vfs_handle_struct *handle,
 730                                               TALLOC_CTX *mem_ctx,
 731                                               struct tevent_context *ev,
 732                                               struct files_struct *fsp,
 733                                               const void *data,
 734                                               size_t n, off_t offset)
 735 {
 736         struct tevent_req *req;
 737         struct vfswrap_asys_state *state;
 738         int ret;
 739
 740         req = tevent_req_create(mem_ctx, &state, struct vfswrap_asys_state);
 741         if (req == NULL) {
 742                 return NULL;
 743         }
 744         if (!vfswrap_init_asys_ctx(handle->conn->sconn->conn)) {
 745                 tevent_req_oom(req);
 746                 return tevent_req_post(req, ev);
 747         }
 748         state->asys_ctx = handle->conn->sconn->conn->asys_ctx;
 749         state->req = req;
 750
 751         ret = asys_pwrite(state->asys_ctx, fsp->fh->fd, data, n, offset, req);
 752         if (ret != 0) {
 753                 tevent_req_error(req, ret);
 754                 return tevent_req_post(req, ev);
 755         }
 756         talloc_set_destructor(state, vfswrap_asys_state_destructor);
 757
 758         return req;
 759 }
 760
 761 static struct tevent_req *vfswrap_fsync_send(struct vfs_handle_struct *handle,
 762                                              TALLOC_CTX *mem_ctx,
 763                                              struct tevent_context *ev,
 764                                              struct files_struct *fsp)
 765 {
 766         struct tevent_req *req;
 767         struct vfswrap_asys_state *state;
 768         int ret;
 769
 770         req = tevent_req_create(mem_ctx, &state, struct vfswrap_asys_state);
 771         if (req == NULL) {
 772                 return NULL;
 773         }
 774         if (!vfswrap_init_asys_ctx(handle->conn->sconn->conn)) {
 775                 tevent_req_oom(req);
 776                 return tevent_req_post(req, ev);
 777         }
 778         state->asys_ctx = handle->conn->sconn->conn->asys_ctx;
 779         state->req = req;
 780
 781         ret = asys_fsync(state->asys_ctx, fsp->fh->fd, req);
 782         if (ret != 0) {
 783                 tevent_req_error(req, ret);
 784                 return tevent_req_post(req, ev);
 785         }
 786         talloc_set_destructor(state, vfswrap_asys_state_destructor);
 787
 788         return req;
 789 }
 790
 791 static void vfswrap_asys_finished(struct tevent_context *ev,
 792                                         struct tevent_fd *fde,
 793                                         uint16_t flags, void *p)
 794 {
 795         struct asys_context *asys_ctx = (struct asys_context *)p;
 796         struct tevent_req *req;
 797         struct vfswrap_asys_state *state;
 798         int res;
 799         ssize_t ret;
 800         int err;
 801         void *private_data;
 802
 803         if ((flags & TEVENT_FD_READ) == 0) {
 804                 return;
 805         }
 806
 807         while (true) {
 808                 res = asys_result(asys_ctx, &ret, &err, &private_data);
 809                 if (res == EINTR || res == EAGAIN) {
 810                         return;
 811                 }
 812 #ifdef EWOULDBLOCK
 813                 if (res == EWOULDBLOCK) {
 814                         return;
 815                 }
 816 #endif
 817
 818                 if (res == ECANCELED) {
 819                         return;
 820                 }
 821
 822                 if (res != 0) {
 823                         DEBUG(1, ("asys_result returned %s\n", strerror(res)));
 824                         return;
 825                 }
 826
 827                 req = talloc_get_type_abort(private_data, struct tevent_req);
 828                 state = tevent_req_data(req, struct vfswrap_asys_state);
 829
 830                 talloc_set_destructor(state, NULL);
 831
 832                 state->ret = ret;
 833                 state->err = err;
 834                 tevent_req_defer_callback(req, ev);
 835                 tevent_req_done(req);
 836         }
 837 }
 838
 839 static ssize_t vfswrap_asys_ssize_t_recv(struct tevent_req *req, int *err)
 840 {
 841         struct vfswrap_asys_state *state = tevent_req_data(
 842                 req, struct vfswrap_asys_state);
 843
 844         if (tevent_req_is_unix_error(req, err)) {
 845                 return -1;
 846         }
 847         *err = state->err;
 848         return state->ret;
 849 }
 850
 851 static int vfswrap_asys_int_recv(struct tevent_req *req, int *err)
 852 {
 853         struct vfswrap_asys_state *state = tevent_req_data(
 854                 req, struct vfswrap_asys_state);
 855
 856         if (tevent_req_is_unix_error(req, err)) {
 857                 return -1;
 858         }
 859         *err = state->err;
 860         return state->ret;
 861 }
 862
 863 static off_t vfswrap_lseek(vfs_handle_struct *handle, files_struct *fsp, off_t offset, int whence)
 864 {
 865         off_t result = 0;
 866
 867         START_PROFILE(syscall_lseek);
 868
 869         /* Cope with 'stat' file opens. */
 870         if (fsp->fh->fd != -1)
 871                 result = lseek(fsp->fh->fd, offset, whence);
 872
 873         /*
 874          * We want to maintain the fiction that we can seek
 875          * on a fifo for file system purposes. This allows
 876          * people to set up UNIX fifo's that feed data to Windows
 877          * applications. JRA.
 878          */
 879
 880         if((result == -1) && (errno == ESPIPE)) {
 881                 result = 0;
 882                 errno = 0;
 883         }
 884
 885         END_PROFILE(syscall_lseek);
 886         return result;
 887 }
 888
 889 static ssize_t vfswrap_sendfile(vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *hdr,
 890                         off_t offset, size_t n)
 891 {
 892         ssize_t result;
 893
 894         START_PROFILE_BYTES(syscall_sendfile, n);
 895         result = sys_sendfile(tofd, fromfsp->fh->fd, hdr, offset, n);
 896         END_PROFILE(syscall_sendfile);
 897         return result;
 898 }
 899
 900 static ssize_t vfswrap_recvfile(vfs_handle_struct *handle,
 901                         int fromfd,
 902                         files_struct *tofsp,
 903                         off_t offset,
 904                         size_t n)
 905 {
 906         ssize_t result;
 907
 908         START_PROFILE_BYTES(syscall_recvfile, n);
 909         result = sys_recvfile(fromfd, tofsp->fh->fd, offset, n);
 910         END_PROFILE(syscall_recvfile);
 911         return result;
 912 }
 913
 914 static int vfswrap_rename(vfs_handle_struct *handle,
 915                           const struct smb_filename *smb_fname_src,
 916                           const struct smb_filename *smb_fname_dst)
 917 {
 918         int result = -1;
 919
 920         START_PROFILE(syscall_rename);
 921
 922         if (smb_fname_src->stream_name || smb_fname_dst->stream_name) {
 923                 errno = ENOENT;
 924                 goto out;
 925         }
 926
 927         result = rename(smb_fname_src->base_name, smb_fname_dst->base_name);
 928
 929  out:
 930         END_PROFILE(syscall_rename);
 931         return result;
 932 }
 933
 934 static int vfswrap_fsync(vfs_handle_struct *handle, files_struct *fsp)
 935 {
 936 #ifdef HAVE_FSYNC
 937         int result;
 938
 939         START_PROFILE(syscall_fsync);
 940         result = fsync(fsp->fh->fd);
 941         END_PROFILE(syscall_fsync);
 942         return result;
 943 #else
 944         return 0;
 945 #endif
 946 }
 947
 948 static int vfswrap_stat(vfs_handle_struct *handle,
 949                         struct smb_filename *smb_fname)
 950 {
 951         int result = -1;
 952
 953         START_PROFILE(syscall_stat);
 954
 955         if (smb_fname->stream_name) {
 956                 errno = ENOENT;
 957                 goto out;
 958         }
 959
 960         result = sys_stat(smb_fname->base_name, &smb_fname->st,
 961                           lp_fake_directory_create_times(SNUM(handle->conn)));
 962  out:
 963         END_PROFILE(syscall_stat);
 964         return result;
 965 }
 966
 967 static int vfswrap_fstat(vfs_handle_struct *handle, files_struct *fsp, SMB_STRUCT_STAT *sbuf)
 968 {
 969         int result;
 970
 971         START_PROFILE(syscall_fstat);
 972         result = sys_fstat(fsp->fh->fd,
 973                            sbuf, lp_fake_directory_create_times(SNUM(handle->conn)));
 974         END_PROFILE(syscall_fstat);
 975         return result;
 976 }
 977
 978 static int vfswrap_lstat(vfs_handle_struct *handle,
 979                          struct smb_filename *smb_fname)
 980 {
 981         int result = -1;
 982
 983         START_PROFILE(syscall_lstat);
 984
 985         if (smb_fname->stream_name) {
 986                 errno = ENOENT;
 987                 goto out;
 988         }
 989
 990         result = sys_lstat(smb_fname->base_name, &smb_fname->st,
 991                            lp_fake_directory_create_times(SNUM(handle->conn)));
 992  out:
 993         END_PROFILE(syscall_lstat);
 994         return result;
 995 }
 996
 997 static NTSTATUS vfswrap_translate_name(struct vfs_handle_struct *handle,
 998                                        const char *name,
 999                                        enum vfs_translate_direction direction,
1000                                        TALLOC_CTX *mem_ctx,
1001                                        char **mapped_name)
1002 {
1003         return NT_STATUS_NONE_MAPPED;
1004 }
1005
1006 /*
1007  * Implement the default fsctl operation.
1008  */
1009 static bool vfswrap_logged_ioctl_message = false;
1010
1011 static NTSTATUS vfswrap_fsctl(struct vfs_handle_struct *handle,
1012                               struct files_struct *fsp,
1013                               TALLOC_CTX *ctx,
1014                               uint32_t function,
1015                               uint16_t req_flags, /* Needed for UNICODE ... */
1016                               const uint8_t *_in_data,
1017                               uint32_t in_len,
1018                               uint8_t **_out_data,
1019                               uint32_t max_out_len,
1020                               uint32_t *out_len)
1021 {
1022         const char *in_data = (const char *)_in_data;
1023         char **out_data = (char **)_out_data;
1024
1025         switch (function) {
1026         case FSCTL_SET_SPARSE:
1027         {
1028                 bool set_sparse = true;
1029                 NTSTATUS status;
1030
1031                 if (in_len >= 1 && in_data[0] == 0) {
1032                         set_sparse = false;
1033                 }
1034
1035                 status = file_set_sparse(handle->conn, fsp, set_sparse);
1036
1037                 DEBUG(NT_STATUS_IS_OK(status) ? 10 : 9,
1038                       ("FSCTL_SET_SPARSE: fname[%s] set[%u] - %s\n",
1039                        smb_fname_str_dbg(fsp->fsp_name), set_sparse,
1040                        nt_errstr(status)));
1041
1042                 return status;
1043         }
1044
1045         case FSCTL_CREATE_OR_GET_OBJECT_ID:
1046         {
1047                 unsigned char objid[16];
1048                 char *return_data = NULL;
1049
1050                 /* This should return the object-id on this file.
1051                  * I think I'll make this be the inode+dev. JRA.
1052                  */
1053
1054                 DEBUG(10,("FSCTL_CREATE_OR_GET_OBJECT_ID: called on %s\n",
1055                           fsp_fnum_dbg(fsp)));
1056
1057                 *out_len = MIN(max_out_len, 64);
1058
1059                 /* Hmmm, will this cause problems if less data asked for? */
1060                 return_data = talloc_array(ctx, char, 64);
1061                 if (return_data == NULL) {
1062                         return NT_STATUS_NO_MEMORY;
1063                 }
1064
1065                 /* For backwards compatibility only store the dev/inode. */
1066                 push_file_id_16(return_data, &fsp->file_id);
1067                 memcpy(return_data+16,create_volume_objectid(fsp->conn,objid),16);
1068                 push_file_id_16(return_data+32, &fsp->file_id);
1069                 memset(return_data+48, 0, 16);
1070                 *out_data = return_data;
1071                 return NT_STATUS_OK;
1072         }
1073
1074         case FSCTL_GET_REPARSE_POINT:
1075         {
1076                 /* Fail it with STATUS_NOT_A_REPARSE_POINT */
1077                 DEBUG(10, ("FSCTL_GET_REPARSE_POINT: called on %s. "
1078                            "Status: NOT_IMPLEMENTED\n", fsp_fnum_dbg(fsp)));
1079                 return NT_STATUS_NOT_A_REPARSE_POINT;
1080         }
1081
1082         case FSCTL_SET_REPARSE_POINT:
1083         {
1084                 /* Fail it with STATUS_NOT_A_REPARSE_POINT */
1085                 DEBUG(10, ("FSCTL_SET_REPARSE_POINT: called on %s. "
1086                            "Status: NOT_IMPLEMENTED\n", fsp_fnum_dbg(fsp)));
1087                 return NT_STATUS_NOT_A_REPARSE_POINT;
1088         }
1089
1090         case FSCTL_GET_SHADOW_COPY_DATA:
1091         {
1092                 /*
1093                  * This is called to retrieve the number of Shadow Copies (a.k.a. snapshots)
1094                  * and return their volume names.  If max_data_count is 16, then it is just
1095                  * asking for the number of volumes and length of the combined names.
1096                  *
1097                  * pdata is the data allocated by our caller, but that uses
1098                  * total_data_count (which is 0 in our case) rather than max_data_count.
1099                  * Allocate the correct amount and return the pointer to let
1100                  * it be deallocated when we return.
1101                  */
1102                 struct shadow_copy_data *shadow_data = NULL;
1103                 bool labels = False;
1104                 uint32 labels_data_count = 0;
1105                 uint32 i;
1106                 char *cur_pdata = NULL;
1107
1108                 if (max_out_len < 16) {
1109                         DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: max_data_count(%u) < 16 is invalid!\n",
1110                                 max_out_len));
1111                         return NT_STATUS_INVALID_PARAMETER;
1112                 }
1113
1114                 if (max_out_len > 16) {
1115                         labels = True;
1116                 }
1117
1118                 shadow_data = talloc_zero(ctx, struct shadow_copy_data);
1119                 if (shadow_data == NULL) {
1120                         DEBUG(0,("TALLOC_ZERO() failed!\n"));
1121                         return NT_STATUS_NO_MEMORY;
1122                 }
1123
1124                 /*
1125                  * Call the VFS routine to actually do the work.
1126                  */
1127                 if (SMB_VFS_GET_SHADOW_COPY_DATA(fsp, shadow_data, labels)!=0) {
1128                         TALLOC_FREE(shadow_data);
1129                         if (errno == ENOSYS) {
1130                                 DEBUG(5,("FSCTL_GET_SHADOW_COPY_DATA: connectpath %s, not supported.\n",
1131                                         fsp->conn->connectpath));
1132                                 return NT_STATUS_NOT_SUPPORTED;
1133                         } else {
1134                                 DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: connectpath %s, failed.\n",
1135                                         fsp->conn->connectpath));
1136                                 return NT_STATUS_UNSUCCESSFUL;
1137                         }
1138                 }
1139
1140                 labels_data_count = (shadow_data->num_volumes * 2 *
1141                                         sizeof(SHADOW_COPY_LABEL)) + 2;
1142
1143                 if (!labels) {
1144                         *out_len = 16;
1145                 } else {
1146                         *out_len = 12 + labels_data_count;
1147                 }
1148
1149                 if (max_out_len < *out_len) {
1150                         DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: max_data_count(%u) too small (%u) bytes needed!\n",
1151                                 max_out_len, *out_len));
1152                         TALLOC_FREE(shadow_data);
1153                         return NT_STATUS_BUFFER_TOO_SMALL;
1154                 }
1155
1156                 cur_pdata = talloc_zero_array(ctx, char, *out_len);
1157                 if (cur_pdata == NULL) {
1158                         TALLOC_FREE(shadow_data);
1159                         return NT_STATUS_NO_MEMORY;
1160                 }
1161
1162                 *out_data = cur_pdata;
1163
1164                 /* num_volumes 4 bytes */
1165                 SIVAL(cur_pdata, 0, shadow_data->num_volumes);
1166
1167                 if (labels) {
1168                         /* num_labels 4 bytes */
1169                         SIVAL(cur_pdata, 4, shadow_data->num_volumes);
1170                 }
1171
1172                 /* needed_data_count 4 bytes */
1173                 SIVAL(cur_pdata, 8, labels_data_count);
1174
1175                 cur_pdata += 12;
1176
1177                 DEBUG(10,("FSCTL_GET_SHADOW_COPY_DATA: %u volumes for path[%s].\n",
1178                           shadow_data->num_volumes, fsp_str_dbg(fsp)));
1179                 if (labels && shadow_data->labels) {
1180                         for (i=0; i<shadow_data->num_volumes; i++) {
1181                                 srvstr_push(cur_pdata, req_flags,
1182                                             cur_pdata, shadow_data->labels[i],
1183                                             2 * sizeof(SHADOW_COPY_LABEL),
1184                                             STR_UNICODE|STR_TERMINATE);
1185                                 cur_pdata += 2 * sizeof(SHADOW_COPY_LABEL);
1186                                 DEBUGADD(10,("Label[%u]: '%s'\n",i,shadow_data->labels[i]));
1187                         }
1188                 }
1189
1190                 TALLOC_FREE(shadow_data);
1191
1192                 return NT_STATUS_OK;
1193         }
1194
1195         case FSCTL_FIND_FILES_BY_SID:
1196         {
1197                 /* pretend this succeeded -
1198                  *
1199                  * we have to send back a list with all files owned by this SID
1200                  *
1201                  * but I have to check that --metze
1202                  */
1203                 struct dom_sid sid;
1204                 uid_t uid;
1205                 size_t sid_len;
1206
1207                 DEBUG(10, ("FSCTL_FIND_FILES_BY_SID: called on %s\n",
1208                            fsp_fnum_dbg(fsp)));
1209
1210                 if (in_len < 8) {
1211                         /* NT_STATUS_BUFFER_TOO_SMALL maybe? */
1212                         return NT_STATUS_INVALID_PARAMETER;
1213                 }
1214
1215                 sid_len = MIN(in_len - 4,SID_MAX_SIZE);
1216
1217                 /* unknown 4 bytes: this is not the length of the sid :-(  */
1218                 /*unknown = IVAL(pdata,0);*/
1219
1220                 if (!sid_parse(in_data + 4, sid_len, &sid)) {
1221                         return NT_STATUS_INVALID_PARAMETER;
1222                 }
1223                 DEBUGADD(10, ("for SID: %s\n", sid_string_dbg(&sid)));
1224
1225                 if (!sid_to_uid(&sid, &uid)) {
1226                         DEBUG(0,("sid_to_uid: failed, sid[%s] sid_len[%lu]\n",
1227                                  sid_string_dbg(&sid),
1228                                  (unsigned long)sid_len));
1229                         uid = (-1);
1230                 }
1231
1232                 /* we can take a look at the find source :-)
1233                  *
1234                  * find ./ -uid $uid  -name '*'   is what we need here
1235                  *
1236                  *
1237                  * and send 4bytes len and then NULL terminated unicode strings
1238                  * for each file
1239                  *
1240                  * but I don't know how to deal with the paged results
1241                  * (maybe we can hang the result anywhere in the fsp struct)
1242                  *
1243                  * but I don't know how to deal with the paged results
1244                  * (maybe we can hang the result anywhere in the fsp struct)
1245                  *
1246                  * we don't send all files at once
1247                  * and at the next we should *not* start from the beginning,
1248                  * so we have to cache the result
1249                  *
1250                  * --metze
1251                  */
1252
1253                 /* this works for now... */
1254                 return NT_STATUS_OK;
1255         }
1256
1257         case FSCTL_QUERY_ALLOCATED_RANGES:
1258         {
1259                 /* FIXME: This is just a dummy reply, telling that all of the
1260                  * file is allocated. MKS cp needs that.
1261                  * Adding the real allocated ranges via FIEMAP on Linux
1262                  * and SEEK_DATA/SEEK_HOLE on Solaris is needed to make
1263                  * this FSCTL correct for sparse files.
1264                  */
1265                 NTSTATUS status;
1266                 uint64_t offset, length;
1267                 char *out_data_tmp = NULL;
1268
1269                 if (in_len != 16) {
1270                         DEBUG(0,("FSCTL_QUERY_ALLOCATED_RANGES: data_count(%u) != 16 is invalid!\n",
1271                                 in_len));
1272                         return NT_STATUS_INVALID_PARAMETER;
1273                 }
1274
1275                 if (max_out_len < 16) {
1276                         DEBUG(0,("FSCTL_QUERY_ALLOCATED_RANGES: max_out_len (%u) < 16 is invalid!\n",
1277                                 max_out_len));
1278                         return NT_STATUS_INVALID_PARAMETER;
1279                 }
1280
1281                 offset = BVAL(in_data,0);
1282                 length = BVAL(in_data,8);
1283
1284                 if (offset + length < offset) {
1285                         /* No 64-bit integer wrap. */
1286                         return NT_STATUS_INVALID_PARAMETER;
1287                 }
1288
1289                 /* Shouldn't this be SMB_VFS_STAT ... ? */
1290                 status = vfs_stat_fsp(fsp);
1291                 if (!NT_STATUS_IS_OK(status)) {
1292                         return status;
1293                 }
1294
1295                 *out_len = 16;
1296                 out_data_tmp = talloc_array(ctx, char, *out_len);
1297                 if (out_data_tmp == NULL) {
1298                         DEBUG(10, ("unable to allocate memory for response\n"));
1299                         return NT_STATUS_NO_MEMORY;
1300                 }
1301
1302                 if (offset > fsp->fsp_name->st.st_ex_size ||
1303                                 fsp->fsp_name->st.st_ex_size == 0 ||
1304                                 length == 0) {
1305                         memset(out_data_tmp, 0, *out_len);
1306                 } else {
1307                         uint64_t end = offset + length;
1308                         end = MIN(end, fsp->fsp_name->st.st_ex_size);
1309                         SBVAL(out_data_tmp, 0, 0);
1310                         SBVAL(out_data_tmp, 8, end);
1311                 }
1312
1313                 *out_data = out_data_tmp;
1314
1315                 return NT_STATUS_OK;
1316         }
1317
1318         case FSCTL_IS_VOLUME_DIRTY:
1319         {
1320                 DEBUG(10,("FSCTL_IS_VOLUME_DIRTY: called on %s "
1321                           "(but remotely not supported)\n", fsp_fnum_dbg(fsp)));
1322                 /*
1323                  * http://msdn.microsoft.com/en-us/library/cc232128%28PROT.10%29.aspx
1324                  * says we have to respond with NT_STATUS_INVALID_PARAMETER
1325                  */
1326                 return NT_STATUS_INVALID_PARAMETER;
1327         }
1328
1329         default:
1330                 /*
1331                  * Only print once ... unfortunately there could be lots of
1332                  * different FSCTLs that are called.
1333                  */
1334                 if (!vfswrap_logged_ioctl_message) {
1335                         vfswrap_logged_ioctl_message = true;
1336                         DEBUG(2, ("%s (0x%x): Currently not implemented.\n",
1337                         __func__, function));
1338                 }
1339         }
1340
1341         return NT_STATUS_NOT_SUPPORTED;
1342 }
1343
1344 struct vfs_cc_state {
1345         off_t copied;
1346         uint8_t buf[65536];
1347 };
1348
1349 static struct tevent_req *vfswrap_copy_chunk_send(struct vfs_handle_struct *handle,
1350                                                   TALLOC_CTX *mem_ctx,
1351                                                   struct tevent_context *ev,
1352                                                   struct files_struct *src_fsp,
1353                                                   off_t src_off,
1354                                                   struct files_struct *dest_fsp,
1355                                                   off_t dest_off,
1356                                                   off_t num)
1357 {
1358         struct tevent_req *req;
1359         struct vfs_cc_state *vfs_cc_state;
1360         NTSTATUS status;
1361
1362         DEBUG(10, ("performing server side copy chunk of length %lu\n",
1363                    (unsigned long)num));
1364
1365         req = tevent_req_create(mem_ctx, &vfs_cc_state, struct vfs_cc_state);
1366         if (req == NULL) {
1367                 return NULL;
1368         }
1369
1370         status = vfs_stat_fsp(src_fsp);
1371         if (tevent_req_nterror(req, status)) {
1372                 return tevent_req_post(req, ev);
1373         }
1374
1375         if (src_fsp->fsp_name->st.st_ex_size < src_off + num) {
1376                 /*
1377                  * [MS-SMB2] 3.3.5.15.6 Handling a Server-Side Data Copy Request
1378                  *   If the SourceOffset or SourceOffset + Length extends beyond
1379                  *   the end of file, the server SHOULD<240> treat this as a
1380                  *   STATUS_END_OF_FILE error.
1381                  * ...
1382                  *   <240> Section 3.3.5.15.6: Windows servers will return
1383                  *   STATUS_INVALID_VIEW_SIZE instead of STATUS_END_OF_FILE.
1384                  */
1385                 tevent_req_nterror(req, NT_STATUS_INVALID_VIEW_SIZE);
1386                 return tevent_req_post(req, ev);
1387         }
1388
1389         /* could use 2.6.33+ sendfile here to do this in kernel */
1390         while (vfs_cc_state->copied < num) {
1391                 ssize_t ret;
1392                 struct lock_struct lck;
1393                 int saved_errno;
1394
1395                 off_t this_num = MIN(sizeof(vfs_cc_state->buf),
1396                                      num - vfs_cc_state->copied);
1397
1398                 init_strict_lock_struct(src_fsp,
1399                                         src_fsp->op->global->open_persistent_id,
1400                                         src_off,
1401                                         this_num,
1402                                         READ_LOCK,
1403                                         &lck);
1404
1405                 if (!SMB_VFS_STRICT_LOCK(src_fsp->conn, src_fsp, &lck)) {
1406                         tevent_req_nterror(req, NT_STATUS_FILE_LOCK_CONFLICT);
1407                         return tevent_req_post(req, ev);
1408                 }
1409
1410                 ret = SMB_VFS_PREAD(src_fsp, vfs_cc_state->buf,
1411                                     this_num, src_off);
1412                 if (ret == -1) {
1413                         saved_errno = errno;
1414                 }
1415
1416                 SMB_VFS_STRICT_UNLOCK(src_fsp->conn, src_fsp, &lck);
1417
1418                 if (ret == -1) {
1419                         errno = saved_errno;
1420                         tevent_req_nterror(req, map_nt_error_from_unix(errno));
1421                         return tevent_req_post(req, ev);
1422                 }
1423                 if (ret != this_num) {
1424                         /* zero tolerance for short reads */
1425                         tevent_req_nterror(req, NT_STATUS_IO_DEVICE_ERROR);
1426                         return tevent_req_post(req, ev);
1427                 }
1428
1429                 src_off += ret;
1430
1431                 init_strict_lock_struct(dest_fsp,
1432                                         dest_fsp->op->global->open_persistent_id,
1433                                         dest_off,
1434                                         this_num,
1435                                         WRITE_LOCK,
1436                                         &lck);
1437
1438                 if (!SMB_VFS_STRICT_LOCK(dest_fsp->conn, dest_fsp, &lck)) {
1439                         tevent_req_nterror(req, NT_STATUS_FILE_LOCK_CONFLICT);
1440                         return tevent_req_post(req, ev);
1441                 }
1442
1443                 ret = SMB_VFS_PWRITE(dest_fsp, vfs_cc_state->buf,
1444                                      this_num, dest_off);
1445                 if (ret == -1) {
1446                         saved_errno = errno;
1447                 }
1448
1449                 SMB_VFS_STRICT_UNLOCK(src_fsp->conn, src_fsp, &lck);
1450
1451                 if (ret == -1) {
1452                         errno = saved_errno;
1453                         tevent_req_nterror(req, map_nt_error_from_unix(errno));
1454                         return tevent_req_post(req, ev);
1455                 }
1456                 if (ret != this_num) {
1457                         /* zero tolerance for short writes */
1458                         tevent_req_nterror(req, NT_STATUS_IO_DEVICE_ERROR);
1459                         return tevent_req_post(req, ev);
1460                 }
1461                 dest_off += ret;
1462
1463                 vfs_cc_state->copied += this_num;
1464         }
1465
1466         tevent_req_done(req);
1467         return tevent_req_post(req, ev);
1468 }
1469
1470 static NTSTATUS vfswrap_copy_chunk_recv(struct vfs_handle_struct *handle,
1471                                         struct tevent_req *req,
1472                                         off_t *copied)
1473 {
1474         struct vfs_cc_state *vfs_cc_state = tevent_req_data(req,
1475                                                         struct vfs_cc_state);
1476         NTSTATUS status;
1477
1478         if (tevent_req_is_nterror(req, &status)) {
1479                 DEBUG(2, ("server side copy chunk failed: %s\n",
1480                           nt_errstr(status)));
1481                 *copied = 0;
1482                 tevent_req_received(req);
1483                 return status;
1484         }
1485
1486         *copied = vfs_cc_state->copied;
1487         DEBUG(10, ("server side copy chunk copied %lu\n",
1488                    (unsigned long)*copied));
1489         tevent_req_received(req);
1490
1491         return NT_STATUS_OK;
1492 }
1493
1494 static NTSTATUS vfswrap_get_compression(struct vfs_handle_struct *handle,
1495                                         TALLOC_CTX *mem_ctx,
1496                                         struct files_struct *fsp,
1497                                         struct smb_filename *smb_fname,
1498                                         uint16_t *_compression_fmt)
1499 {
1500         return NT_STATUS_INVALID_DEVICE_REQUEST;
1501 }
1502
1503 static NTSTATUS vfswrap_set_compression(struct vfs_handle_struct *handle,
1504                                         TALLOC_CTX *mem_ctx,
1505                                         struct files_struct *fsp,
1506                                         uint16_t compression_fmt)
1507 {
1508         return NT_STATUS_INVALID_DEVICE_REQUEST;
1509 }
1510
1511 /********************************************************************
1512  Given a stat buffer return the allocated size on disk, taking into
1513  account sparse files.
1514 ********************************************************************/
1515 static uint64_t vfswrap_get_alloc_size(vfs_handle_struct *handle,
1516                                        struct files_struct *fsp,
1517                                        const SMB_STRUCT_STAT *sbuf)
1518 {
1519         uint64_t result;
1520
1521         START_PROFILE(syscall_get_alloc_size);
1522
1523         if(S_ISDIR(sbuf->st_ex_mode)) {
1524                 result = 0;
1525                 goto out;
1526         }
1527
1528 #if defined(HAVE_STAT_ST_BLOCKS) && defined(STAT_ST_BLOCKSIZE)
1529         /* The type of st_blocksize is blkcnt_t which *MUST* be
1530            signed (according to POSIX) and can be less than 64-bits.
1531            Ensure when we're converting to 64 bits wide we don't
1532            sign extend. */
1533 #if defined(SIZEOF_BLKCNT_T_8)
1534         result = (uint64_t)STAT_ST_BLOCKSIZE * (uint64_t)sbuf->st_ex_blocks;
1535 #elif defined(SIZEOF_BLKCNT_T_4)
1536         {
1537                 uint64_t bs = ((uint64_t)sbuf->st_ex_blocks) & 0xFFFFFFFFLL;
1538                 result = (uint64_t)STAT_ST_BLOCKSIZE * bs;
1539         }
1540 #else
1541 #error SIZEOF_BLKCNT_T_NOT_A_SUPPORTED_VALUE
1542 #endif
1543 #else
1544         result = get_file_size_stat(sbuf);
1545 #endif
1546
1547         if (fsp && fsp->initial_allocation_size)
1548                 result = MAX(result,fsp->initial_allocation_size);
1549
1550         result = smb_roundup(handle->conn, result);
1551
1552  out:
1553         END_PROFILE(syscall_get_alloc_size);
1554         return result;
1555 }
1556
1557 static int vfswrap_unlink(vfs_handle_struct *handle,
1558                           const struct smb_filename *smb_fname)
1559 {
1560         int result = -1;
1561
1562         START_PROFILE(syscall_unlink);
1563
1564         if (smb_fname->stream_name) {
1565                 errno = ENOENT;
1566                 goto out;
1567         }
1568         result = unlink(smb_fname->base_name);
1569
1570  out:
1571         END_PROFILE(syscall_unlink);
1572         return result;
1573 }
1574
1575 static int vfswrap_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
1576 {
1577         int result;
1578
1579         START_PROFILE(syscall_chmod);
1580
1581         /*
1582          * We need to do this due to the fact that the default POSIX ACL
1583          * chmod modifies the ACL *mask* for the group owner, not the
1584          * group owner bits directly. JRA.
1585          */
1586
1587
1588         {
1589                 int saved_errno = errno; /* We might get ENOSYS */
1590                 if ((result = SMB_VFS_CHMOD_ACL(handle->conn, path, mode)) == 0) {
1591                         END_PROFILE(syscall_chmod);
1592                         return result;
1593                 }
1594                 /* Error - return the old errno. */
1595                 errno = saved_errno;
1596         }
1597
1598         result = chmod(path, mode);
1599         END_PROFILE(syscall_chmod);
1600         return result;
1601 }
1602
1603 static int vfswrap_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
1604 {
1605         int result;
1606
1607         START_PROFILE(syscall_fchmod);
1608
1609         /*
1610          * We need to do this due to the fact that the default POSIX ACL
1611          * chmod modifies the ACL *mask* for the group owner, not the
1612          * group owner bits directly. JRA.
1613          */
1614
1615         {
1616                 int saved_errno = errno; /* We might get ENOSYS */
1617                 if ((result = SMB_VFS_FCHMOD_ACL(fsp, mode)) == 0) {
1618                         END_PROFILE(syscall_fchmod);
1619                         return result;
1620                 }
1621                 /* Error - return the old errno. */
1622                 errno = saved_errno;
1623         }
1624
1625 #if defined(HAVE_FCHMOD)
1626         result = fchmod(fsp->fh->fd, mode);
1627 #else
1628         result = -1;
1629         errno = ENOSYS;
1630 #endif
1631
1632         END_PROFILE(syscall_fchmod);
1633         return result;
1634 }
1635
1636 static int vfswrap_chown(vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
1637 {
1638         int result;
1639
1640         START_PROFILE(syscall_chown);
1641         result = chown(path, uid, gid);
1642         END_PROFILE(syscall_chown);
1643         return result;
1644 }
1645
1646 static int vfswrap_fchown(vfs_handle_struct *handle, files_struct *fsp, uid_t uid, gid_t gid)
1647 {
1648 #ifdef HAVE_FCHOWN
1649         int result;
1650
1651         START_PROFILE(syscall_fchown);
1652         result = fchown(fsp->fh->fd, uid, gid);
1653         END_PROFILE(syscall_fchown);
1654         return result;
1655 #else
1656         errno = ENOSYS;
1657         return -1;
1658 #endif
1659 }
1660
1661 static int vfswrap_lchown(vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
1662 {
1663         int result;
1664
1665         START_PROFILE(syscall_lchown);
1666         result = lchown(path, uid, gid);
1667         END_PROFILE(syscall_lchown);
1668         return result;
1669 }
1670
1671 static int vfswrap_chdir(vfs_handle_struct *handle, const char *path)
1672 {
1673         int result;
1674
1675         START_PROFILE(syscall_chdir);
1676         result = chdir(path);
1677         END_PROFILE(syscall_chdir);
1678         return result;
1679 }
1680
1681 static char *vfswrap_getwd(vfs_handle_struct *handle)
1682 {
1683         char *result;
1684
1685         START_PROFILE(syscall_getwd);
1686         result = sys_getwd();
1687         END_PROFILE(syscall_getwd);
1688         return result;
1689 }
1690
1691 /*********************************************************************
1692  nsec timestamp resolution call. Convert down to whatever the underlying
1693  system will support.
1694 **********************************************************************/
1695
1696 static int vfswrap_ntimes(vfs_handle_struct *handle,
1697                           const struct smb_filename *smb_fname,
1698                           struct smb_file_time *ft)
1699 {
1700         int result = -1;
1701
1702         START_PROFILE(syscall_ntimes);
1703
1704         if (smb_fname->stream_name) {
1705                 errno = ENOENT;
1706                 goto out;
1707         }
1708
1709         if (ft != NULL) {
1710                 if (null_timespec(ft->atime)) {
1711                         ft->atime= smb_fname->st.st_ex_atime;
1712                 }
1713
1714                 if (null_timespec(ft->mtime)) {
1715                         ft->mtime = smb_fname->st.st_ex_mtime;
1716                 }
1717
1718                 if (!null_timespec(ft->create_time)) {
1719                         set_create_timespec_ea(handle->conn,
1720                                                smb_fname,
1721                                                ft->create_time);
1722                 }
1723
1724                 if ((timespec_compare(&ft->atime,
1725                                       &smb_fname->st.st_ex_atime) == 0) &&
1726                     (timespec_compare(&ft->mtime,
1727                                       &smb_fname->st.st_ex_mtime) == 0)) {
1728                         return 0;
1729                 }
1730         }
1731
1732 #if defined(HAVE_UTIMENSAT)
1733         if (ft != NULL) {
1734                 struct timespec ts[2];
1735                 ts[0] = ft->atime;
1736                 ts[1] = ft->mtime;
1737                 result = utimensat(AT_FDCWD, smb_fname->base_name, ts, 0);
1738         } else {
1739                 result = utimensat(AT_FDCWD, smb_fname->base_name, NULL, 0);
1740         }
1741         if (!((result == -1) && (errno == ENOSYS))) {
1742                 goto out;
1743         }
1744 #endif
1745 #if defined(HAVE_UTIMES)
1746         if (ft != NULL) {
1747                 struct timeval tv[2];
1748                 tv[0] = convert_timespec_to_timeval(ft->atime);
1749                 tv[1] = convert_timespec_to_timeval(ft->mtime);
1750                 result = utimes(smb_fname->base_name, tv);
1751         } else {
1752                 result = utimes(smb_fname->base_name, NULL);
1753         }
1754         if (!((result == -1) && (errno == ENOSYS))) {
1755                 goto out;
1756         }
1757 #endif
1758 #if defined(HAVE_UTIME)
1759         if (ft != NULL) {
1760                 struct utimbuf times;
1761                 times.actime = convert_timespec_to_time_t(ft->atime);
1762                 times.modtime = convert_timespec_to_time_t(ft->mtime);
1763                 result = utime(smb_fname->base_name, &times);
1764         } else {
1765                 result = utime(smb_fname->base_name, NULL);
1766         }
1767         if (!((result == -1) && (errno == ENOSYS))) {
1768                 goto out;
1769         }
1770 #endif
1771         errno = ENOSYS;
1772         result = -1;
1773
1774  out:
1775         END_PROFILE(syscall_ntimes);
1776         return result;
1777 }
1778
1779 /*********************************************************************
1780  A version of ftruncate that will write the space on disk if strict
1781  allocate is set.
1782 **********************************************************************/
1783
1784 static int strict_allocate_ftruncate(vfs_handle_struct *handle, files_struct *fsp, off_t len)
1785 {
1786         off_t space_to_write;
1787         uint64_t space_avail;
1788         uint64_t bsize,dfree,dsize;
1789         int ret;
1790         NTSTATUS status;
1791         SMB_STRUCT_STAT *pst;
1792
1793         status = vfs_stat_fsp(fsp);
1794         if (!NT_STATUS_IS_OK(status)) {
1795                 return -1;
1796         }
1797         pst = &fsp->fsp_name->st;
1798
1799 #ifdef S_ISFIFO
1800         if (S_ISFIFO(pst->st_ex_mode))
1801                 return 0;
1802 #endif
1803
1804         if (pst->st_ex_size == len)
1805                 return 0;
1806
1807         /* Shrink - just ftruncate. */
1808         if (pst->st_ex_size > len)
1809                 return ftruncate(fsp->fh->fd, len);
1810
1811         space_to_write = len - pst->st_ex_size;
1812
1813         /* for allocation try fallocate first. This can fail on some
1814            platforms e.g. when the filesystem doesn't support it and no
1815            emulation is being done by the libc (like on AIX with JFS1). In that
1816            case we do our own emulation. fallocate implementations can
1817            return ENOTSUP or EINVAL in cases like that. */
1818         ret = SMB_VFS_FALLOCATE(fsp, VFS_FALLOCATE_EXTEND_SIZE,
1819                                 pst->st_ex_size, space_to_write);
1820         if (ret == ENOSPC) {
1821                 errno = ENOSPC;
1822                 return -1;
1823         }
1824         if (ret == 0) {
1825                 return 0;
1826         }
1827         DEBUG(10,("strict_allocate_ftruncate: SMB_VFS_FALLOCATE failed with "
1828                 "error %d. Falling back to slow manual allocation\n", ret));
1829
1830         /* available disk space is enough or not? */
1831         space_avail = get_dfree_info(fsp->conn,
1832                                      fsp->fsp_name->base_name, false,
1833                                      &bsize,&dfree,&dsize);
1834         /* space_avail is 1k blocks */
1835         if (space_avail == (uint64_t)-1 ||
1836                         ((uint64_t)space_to_write/1024 > space_avail) ) {
1837                 errno = ENOSPC;
1838                 return -1;
1839         }
1840
1841         /* Write out the real space on disk. */
1842         ret = vfs_slow_fallocate(fsp, pst->st_ex_size, space_to_write);
1843         if (ret != 0) {
1844                 errno = ret;
1845                 ret = -1;
1846         }
1847
1848         return 0;
1849 }
1850
1851 static int vfswrap_ftruncate(vfs_handle_struct *handle, files_struct *fsp, off_t len)
1852 {
1853         int result = -1;
1854         SMB_STRUCT_STAT *pst;
1855         NTSTATUS status;
1856         char c = 0;
1857
1858         START_PROFILE(syscall_ftruncate);
1859
1860         if (lp_strict_allocate(SNUM(fsp->conn)) && !fsp->is_sparse) {
1861                 result = strict_allocate_ftruncate(handle, fsp, len);
1862                 END_PROFILE(syscall_ftruncate);
1863                 return result;
1864         }
1865
1866         /* we used to just check HAVE_FTRUNCATE_EXTEND and only use
1867            ftruncate if the system supports it. Then I discovered that
1868            you can have some filesystems that support ftruncate
1869            expansion and some that don't! On Linux fat can't do
1870            ftruncate extend but ext2 can. */
1871
1872         result = ftruncate(fsp->fh->fd, len);
1873         if (result == 0)
1874                 goto done;
1875
1876         /* According to W. R. Stevens advanced UNIX prog. Pure 4.3 BSD cannot
1877            extend a file with ftruncate. Provide alternate implementation
1878            for this */
1879
1880         /* Do an fstat to see if the file is longer than the requested
1881            size in which case the ftruncate above should have
1882            succeeded or shorter, in which case seek to len - 1 and
1883            write 1 byte of zero */
1884         status = vfs_stat_fsp(fsp);
1885         if (!NT_STATUS_IS_OK(status)) {
1886                 goto done;
1887         }
1888         pst = &fsp->fsp_name->st;
1889
1890 #ifdef S_ISFIFO
1891         if (S_ISFIFO(pst->st_ex_mode)) {
1892                 result = 0;
1893                 goto done;
1894         }
1895 #endif
1896
1897         if (pst->st_ex_size == len) {
1898                 result = 0;
1899                 goto done;
1900         }
1901
1902         if (pst->st_ex_size > len) {
1903                 /* the ftruncate should have worked */
1904                 goto done;
1905         }
1906
1907         if (SMB_VFS_PWRITE(fsp, &c, 1, len-1)!=1) {
1908                 goto done;
1909         }
1910
1911         result = 0;
1912
1913   done:
1914
1915         END_PROFILE(syscall_ftruncate);
1916         return result;
1917 }
1918
1919 static int vfswrap_fallocate(vfs_handle_struct *handle,
1920                         files_struct *fsp,
1921                         enum vfs_fallocate_mode mode,
1922                         off_t offset,
1923                         off_t len)
1924 {
1925         int result;
1926
1927         START_PROFILE(syscall_fallocate);
1928         if (mode == VFS_FALLOCATE_EXTEND_SIZE) {
1929                 result = sys_posix_fallocate(fsp->fh->fd, offset, len);
1930         } else if (mode == VFS_FALLOCATE_KEEP_SIZE) {
1931                 result = sys_fallocate(fsp->fh->fd, mode, offset, len);
1932         } else {
1933                 errno = EINVAL;
1934                 result = -1;
1935         }
1936         END_PROFILE(syscall_fallocate);
1937         return result;
1938 }
1939
1940 static bool vfswrap_lock(vfs_handle_struct *handle, files_struct *fsp, int op, off_t offset, off_t count, int type)
1941 {
1942         bool result;
1943
1944         START_PROFILE(syscall_fcntl_lock);
1945         result =  fcntl_lock(fsp->fh->fd, op, offset, count, type);
1946         END_PROFILE(syscall_fcntl_lock);
1947         return result;
1948 }
1949
1950 static int vfswrap_kernel_flock(vfs_handle_struct *handle, files_struct *fsp,
1951                                 uint32 share_mode, uint32 access_mask)
1952 {
1953         START_PROFILE(syscall_kernel_flock);
1954         kernel_flock(fsp->fh->fd, share_mode, access_mask);
1955         END_PROFILE(syscall_kernel_flock);
1956         return 0;
1957 }
1958
1959 static bool vfswrap_getlock(vfs_handle_struct *handle, files_struct *fsp, off_t *poffset, off_t *pcount, int *ptype, pid_t *ppid)
1960 {
1961         bool result;
1962
1963         START_PROFILE(syscall_fcntl_getlock);
1964         result =  fcntl_getlock(fsp->fh->fd, poffset, pcount, ptype, ppid);
1965         END_PROFILE(syscall_fcntl_getlock);
1966         return result;
1967 }
1968
1969 static int vfswrap_linux_setlease(vfs_handle_struct *handle, files_struct *fsp,
1970                                 int leasetype)
1971 {
1972         int result = -1;
1973
1974         START_PROFILE(syscall_linux_setlease);
1975
1976 #ifdef HAVE_KERNEL_OPLOCKS_LINUX
1977         result = linux_setlease(fsp->fh->fd, leasetype);
1978 #else
1979         errno = ENOSYS;
1980 #endif
1981         END_PROFILE(syscall_linux_setlease);
1982         return result;
1983 }
1984
1985 static int vfswrap_symlink(vfs_handle_struct *handle, const char *oldpath, const char *newpath)
1986 {
1987         int result;
1988
1989         START_PROFILE(syscall_symlink);
1990         result = symlink(oldpath, newpath);
1991         END_PROFILE(syscall_symlink);
1992         return result;
1993 }
1994
1995 static int vfswrap_readlink(vfs_handle_struct *handle, const char *path, char *buf, size_t bufsiz)
1996 {
1997         int result;
1998
1999         START_PROFILE(syscall_readlink);
2000         result = readlink(path, buf, bufsiz);
2001         END_PROFILE(syscall_readlink);
2002         return result;
2003 }
2004
2005 static int vfswrap_link(vfs_handle_struct *handle, const char *oldpath, const char *newpath)
2006 {
2007         int result;
2008
2009         START_PROFILE(syscall_link);
2010         result = link(oldpath, newpath);
2011         END_PROFILE(syscall_link);
2012         return result;
2013 }
2014
2015 static int vfswrap_mknod(vfs_handle_struct *handle, const char *pathname, mode_t mode, SMB_DEV_T dev)
2016 {
2017         int result;
2018
2019         START_PROFILE(syscall_mknod);
2020         result = sys_mknod(pathname, mode, dev);
2021         END_PROFILE(syscall_mknod);
2022         return result;
2023 }
2024
2025 static char *vfswrap_realpath(vfs_handle_struct *handle, const char *path)
2026 {
2027         char *result;
2028
2029         START_PROFILE(syscall_realpath);
2030 #ifdef REALPATH_TAKES_NULL
2031         result = realpath(path, NULL);
2032 #else
2033         result = SMB_MALLOC_ARRAY(char, PATH_MAX+1);
2034         if (result) {
2035                 char *resolved_path = realpath(path, result);
2036                 if (!resolved_path) {
2037                         SAFE_FREE(result);
2038                 } else {
2039                         /* SMB_ASSERT(result == resolved_path) ? */
2040                         result = resolved_path;
2041                 }
2042         }
2043 #endif
2044         END_PROFILE(syscall_realpath);
2045         return result;
2046 }
2047
2048 static NTSTATUS vfswrap_notify_watch(vfs_handle_struct *vfs_handle,
2049                                      struct sys_notify_context *ctx,
2050                                      const char *path,
2051                                      uint32_t *filter,
2052                                      uint32_t *subdir_filter,
2053                                      void (*callback)(struct sys_notify_context *ctx,
2054                                                       void *private_data,
2055                                                       struct notify_event *ev),
2056                                      void *private_data, void *handle)
2057 {
2058         /*
2059          * So far inotify is the only supported default notify mechanism. If
2060          * another platform like the the BSD's or a proprietary Unix comes
2061          * along and wants another default, we can play the same trick we
2062          * played with Posix ACLs.
2063          *
2064          * Until that is the case, hard-code inotify here.
2065          */
2066 #ifdef HAVE_INOTIFY
2067         if (lp_kernel_change_notify(vfs_handle->conn->params)) {
2068                 return inotify_watch(ctx, path, filter, subdir_filter,
2069                                      callback, private_data, handle);
2070         }
2071 #endif
2072         /*
2073          * Do nothing, leave everything to notify_internal.c
2074          */
2075         return NT_STATUS_OK;
2076 }
2077
2078 static int vfswrap_chflags(vfs_handle_struct *handle, const char *path,
2079                            unsigned int flags)
2080 {
2081 #ifdef HAVE_CHFLAGS
2082         return chflags(path, flags);
2083 #else
2084         errno = ENOSYS;
2085         return -1;
2086 #endif
2087 }
2088
2089 static struct file_id vfswrap_file_id_create(struct vfs_handle_struct *handle,
2090                                              const SMB_STRUCT_STAT *sbuf)
2091 {
2092         struct file_id key;
2093
2094         /* the ZERO_STRUCT ensures padding doesn't break using the key as a
2095          * blob */
2096         ZERO_STRUCT(key);
2097
2098         key.devid = sbuf->st_ex_dev;
2099         key.inode = sbuf->st_ex_ino;
2100         /* key.extid is unused by default. */
2101
2102         return key;
2103 }
2104
2105 static NTSTATUS vfswrap_streaminfo(vfs_handle_struct *handle,
2106                                    struct files_struct *fsp,
2107                                    const char *fname,
2108                                    TALLOC_CTX *mem_ctx,
2109                                    unsigned int *pnum_streams,
2110                                    struct stream_struct **pstreams)
2111 {
2112         SMB_STRUCT_STAT sbuf;
2113         struct stream_struct *tmp_streams = NULL;
2114         int ret;
2115
2116         if ((fsp != NULL) && (fsp->is_directory)) {
2117                 /*
2118                  * No default streams on directories
2119                  */
2120                 goto done;
2121         }
2122
2123         if ((fsp != NULL) && (fsp->fh->fd != -1)) {
2124                 ret = SMB_VFS_FSTAT(fsp, &sbuf);
2125         }
2126         else {
2127                 struct smb_filename smb_fname;
2128
2129                 ZERO_STRUCT(smb_fname);
2130                 smb_fname.base_name = discard_const_p(char, fname);
2131
2132                 if (lp_posix_pathnames()) {
2133                         ret = SMB_VFS_LSTAT(handle->conn, &smb_fname);
2134                 } else {
2135                         ret = SMB_VFS_STAT(handle->conn, &smb_fname);
2136                 }
2137                 sbuf = smb_fname.st;
2138         }
2139
2140         if (ret == -1) {
2141                 return map_nt_error_from_unix(errno);
2142         }
2143
2144         if (S_ISDIR(sbuf.st_ex_mode)) {
2145                 goto done;
2146         }
2147
2148         tmp_streams = talloc_realloc(mem_ctx, *pstreams, struct stream_struct,
2149                                         (*pnum_streams) + 1);
2150         if (tmp_streams == NULL) {
2151                 return NT_STATUS_NO_MEMORY;
2152         }
2153         tmp_streams[*pnum_streams].name = talloc_strdup(tmp_streams, "::$DATA");
2154         if (tmp_streams[*pnum_streams].name == NULL) {
2155                 return NT_STATUS_NO_MEMORY;
2156         }
2157         tmp_streams[*pnum_streams].size = sbuf.st_ex_size;
2158         tmp_streams[*pnum_streams].alloc_size = SMB_VFS_GET_ALLOC_SIZE(handle->conn, fsp, &sbuf);
2159
2160         *pnum_streams += 1;
2161         *pstreams = tmp_streams;
2162  done:
2163         return NT_STATUS_OK;
2164 }
2165
2166 static int vfswrap_get_real_filename(struct vfs_handle_struct *handle,
2167                                      const char *path,
2168                                      const char *name,
2169                                      TALLOC_CTX *mem_ctx,
2170                                      char **found_name)
2171 {
2172         /*
2173          * Don't fall back to get_real_filename so callers can differentiate
2174          * between a full directory scan and an actual case-insensitive stat.
2175          */
2176         errno = EOPNOTSUPP;
2177         return -1;
2178 }
2179
2180 static const char *vfswrap_connectpath(struct vfs_handle_struct *handle,
2181                                        const char *fname)
2182 {
2183         return handle->conn->connectpath;
2184 }
2185
2186 static NTSTATUS vfswrap_brl_lock_windows(struct vfs_handle_struct *handle,
2187                                          struct byte_range_lock *br_lck,
2188                                          struct lock_struct *plock,
2189                                          bool blocking_lock,
2190                                          struct blocking_lock_record *blr)
2191 {
2192         SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
2193
2194         /* Note: blr is not used in the default implementation. */
2195         return brl_lock_windows_default(br_lck, plock, blocking_lock);
2196 }
2197
2198 static bool vfswrap_brl_unlock_windows(struct vfs_handle_struct *handle,
2199                                        struct messaging_context *msg_ctx,
2200                                        struct byte_range_lock *br_lck,
2201                                        const struct lock_struct *plock)
2202 {
2203         SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
2204
2205         return brl_unlock_windows_default(msg_ctx, br_lck, plock);
2206 }
2207
2208 static bool vfswrap_brl_cancel_windows(struct vfs_handle_struct *handle,
2209                                        struct byte_range_lock *br_lck,
2210                                        struct lock_struct *plock,
2211                                        struct blocking_lock_record *blr)
2212 {
2213         SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
2214
2215         /* Note: blr is not used in the default implementation. */
2216         return brl_lock_cancel_default(br_lck, plock);
2217 }
2218
2219 static bool vfswrap_strict_lock(struct vfs_handle_struct *handle,
2220                                 files_struct *fsp,
2221                                 struct lock_struct *plock)
2222 {
2223         SMB_ASSERT(plock->lock_type == READ_LOCK ||
2224             plock->lock_type == WRITE_LOCK);
2225
2226         return strict_lock_default(fsp, plock);
2227 }
2228
2229 static void vfswrap_strict_unlock(struct vfs_handle_struct *handle,
2230                                 files_struct *fsp,
2231                                 struct lock_struct *plock)
2232 {
2233         SMB_ASSERT(plock->lock_type == READ_LOCK ||
2234             plock->lock_type == WRITE_LOCK);
2235
2236         strict_unlock_default(fsp, plock);
2237 }
2238
2239 /* NT ACL operations. */
2240
2241 static NTSTATUS vfswrap_fget_nt_acl(vfs_handle_struct *handle,
2242                                     files_struct *fsp,
2243                                     uint32 security_info,
2244                                     TALLOC_CTX *mem_ctx,
2245                                     struct security_descriptor **ppdesc)
2246 {
2247         NTSTATUS result;
2248
2249         START_PROFILE(fget_nt_acl);
2250         result = posix_fget_nt_acl(fsp, security_info,
2251                                    mem_ctx, ppdesc);
2252         END_PROFILE(fget_nt_acl);
2253         return result;
2254 }
2255
2256 static NTSTATUS vfswrap_get_nt_acl(vfs_handle_struct *handle,
2257                                    const char *name,
2258                                    uint32 security_info,
2259                                    TALLOC_CTX *mem_ctx,
2260                                    struct security_descriptor **ppdesc)
2261 {
2262         NTSTATUS result;
2263
2264         START_PROFILE(get_nt_acl);
2265         result = posix_get_nt_acl(handle->conn, name, security_info,
2266                                   mem_ctx, ppdesc);
2267         END_PROFILE(get_nt_acl);
2268         return result;
2269 }
2270
2271 static NTSTATUS vfswrap_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const struct security_descriptor *psd)
2272 {
2273         NTSTATUS result;
2274
2275         START_PROFILE(fset_nt_acl);
2276         result = set_nt_acl(fsp, security_info_sent, psd);
2277         END_PROFILE(fset_nt_acl);
2278         return result;
2279 }
2280
2281 static NTSTATUS vfswrap_audit_file(struct vfs_handle_struct *handle,
2282                                    struct smb_filename *file,
2283                                    struct security_acl *sacl,
2284                                    uint32_t access_requested,
2285                                    uint32_t access_denied)
2286 {
2287         return NT_STATUS_OK; /* Nothing to do here ... */
2288 }
2289
2290 static int vfswrap_chmod_acl(vfs_handle_struct *handle, const char *name, mode_t mode)
2291 {
2292 #ifdef HAVE_NO_ACL
2293         errno = ENOSYS;
2294         return -1;
2295 #else
2296         int result;
2297
2298         START_PROFILE(chmod_acl);
2299         result = chmod_acl(handle->conn, name, mode);
2300         END_PROFILE(chmod_acl);
2301         return result;
2302 #endif
2303 }
2304
2305 static int vfswrap_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
2306 {
2307 #ifdef HAVE_NO_ACL
2308         errno = ENOSYS;
2309         return -1;
2310 #else
2311         int result;
2312
2313         START_PROFILE(fchmod_acl);
2314         result = fchmod_acl(fsp, mode);
2315         END_PROFILE(fchmod_acl);
2316         return result;
2317 #endif
2318 }
2319
2320 static SMB_ACL_T vfswrap_sys_acl_get_file(vfs_handle_struct *handle,
2321                                           const char *path_p,
2322                                           SMB_ACL_TYPE_T type,
2323                                           TALLOC_CTX *mem_ctx)
2324 {
2325         return sys_acl_get_file(handle, path_p, type, mem_ctx);
2326 }
2327
2328 static SMB_ACL_T vfswrap_sys_acl_get_fd(vfs_handle_struct *handle,
2329                                         files_struct *fsp,
2330                                         TALLOC_CTX *mem_ctx)
2331 {
2332         return sys_acl_get_fd(handle, fsp, mem_ctx);
2333 }
2334
2335 static int vfswrap_sys_acl_set_file(vfs_handle_struct *handle, const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl)
2336 {
2337         return sys_acl_set_file(handle, name, acltype, theacl);
2338 }
2339
2340 static int vfswrap_sys_acl_set_fd(vfs_handle_struct *handle, files_struct *fsp, SMB_ACL_T theacl)
2341 {
2342         return sys_acl_set_fd(handle, fsp, theacl);
2343 }
2344
2345 static int vfswrap_sys_acl_delete_def_file(vfs_handle_struct *handle, const char *path)
2346 {
2347         return sys_acl_delete_def_file(handle, path);
2348 }
2349
2350 /****************************************************************
2351  Extended attribute operations.
2352 *****************************************************************/
2353
2354 static ssize_t vfswrap_getxattr(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size)
2355 {
2356         return getxattr(path, name, value, size);
2357 }
2358
2359 static ssize_t vfswrap_fgetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size)
2360 {
2361         return fgetxattr(fsp->fh->fd, name, value, size);
2362 }
2363
2364 static ssize_t vfswrap_listxattr(struct vfs_handle_struct *handle, const char *path, char *list, size_t size)
2365 {
2366         return listxattr(path, list, size);
2367 }
2368
2369 static ssize_t vfswrap_flistxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size)
2370 {
2371         return flistxattr(fsp->fh->fd, list, size);
2372 }
2373
2374 static int vfswrap_removexattr(struct vfs_handle_struct *handle, const char *path, const char *name)
2375 {
2376         return removexattr(path, name);
2377 }
2378
2379 static int vfswrap_fremovexattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name)
2380 {
2381         return fremovexattr(fsp->fh->fd, name);
2382 }
2383
2384 static int vfswrap_setxattr(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags)
2385 {
2386         return setxattr(path, name, value, size, flags);
2387 }
2388
2389 static int vfswrap_fsetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags)
2390 {
2391         return fsetxattr(fsp->fh->fd, name, value, size, flags);
2392 }
2393
2394 static bool vfswrap_aio_force(struct vfs_handle_struct *handle, struct files_struct *fsp)
2395 {
2396         return false;
2397 }
2398
2399 static bool vfswrap_is_offline(struct vfs_handle_struct *handle,
2400                                const struct smb_filename *fname,
2401                                SMB_STRUCT_STAT *sbuf)
2402 {
2403         NTSTATUS status;
2404         char *path;
2405         bool offline = false;
2406
2407         if (ISDOT(fname->base_name) || ISDOTDOT(fname->base_name)) {
2408                 return false;
2409         }
2410
2411         if (!lp_dmapi_support(SNUM(handle->conn)) || !dmapi_have_session()) {
2412 #if defined(ENOTSUP)
2413                 errno = ENOTSUP;
2414 #endif
2415                 return false;
2416         }
2417
2418         status = get_full_smb_filename(talloc_tos(), fname, &path);
2419         if (!NT_STATUS_IS_OK(status)) {
2420                 errno = map_errno_from_nt_status(status);
2421                 return false;
2422         }
2423
2424         offline = (dmapi_file_flags(path) & FILE_ATTRIBUTE_OFFLINE) != 0;
2425
2426         TALLOC_FREE(path);
2427
2428         return offline;
2429 }
2430
2431 static int vfswrap_set_offline(struct vfs_handle_struct *handle,
2432                                const struct smb_filename *fname)
2433 {
2434         /* We don't know how to set offline bit by default, needs to be overriden in the vfs modules */
2435 #if defined(ENOTSUP)
2436         errno = ENOTSUP;
2437 #endif
2438         return -1;
2439 }
2440
2441 static NTSTATUS vfswrap_durable_cookie(struct vfs_handle_struct *handle,
2442                                        struct files_struct *fsp,
2443                                        TALLOC_CTX *mem_ctx,
2444                                        DATA_BLOB *cookie)
2445 {
2446         return vfs_default_durable_cookie(fsp, mem_ctx, cookie);
2447 }
2448
2449 static NTSTATUS vfswrap_durable_disconnect(struct vfs_handle_struct *handle,
2450                                            struct files_struct *fsp,
2451                                            const DATA_BLOB old_cookie,
2452                                            TALLOC_CTX *mem_ctx,
2453                                            DATA_BLOB *new_cookie)
2454 {
2455         return vfs_default_durable_disconnect(fsp, old_cookie, mem_ctx,
2456                                               new_cookie);
2457 }
2458
2459 static NTSTATUS vfswrap_durable_reconnect(struct vfs_handle_struct *handle,
2460                                           struct smb_request *smb1req,
2461                                           struct smbXsrv_open *op,
2462                                           const DATA_BLOB old_cookie,
2463                                           TALLOC_CTX *mem_ctx,
2464                                           struct files_struct **fsp,
2465                                           DATA_BLOB *new_cookie)
2466 {
2467         return vfs_default_durable_reconnect(handle->conn, smb1req, op,
2468                                              old_cookie, mem_ctx,
2469                                              fsp, new_cookie);
2470 }
2471
2472 static struct vfs_fn_pointers vfs_default_fns = {
2473         /* Disk operations */
2474
2475         .connect_fn = vfswrap_connect,
2476         .disconnect_fn = vfswrap_disconnect,
2477         .disk_free_fn = vfswrap_disk_free,
2478         .get_quota_fn = vfswrap_get_quota,
2479         .set_quota_fn = vfswrap_set_quota,
2480         .get_shadow_copy_data_fn = vfswrap_get_shadow_copy_data,
2481         .statvfs_fn = vfswrap_statvfs,
2482         .fs_capabilities_fn = vfswrap_fs_capabilities,
2483         .get_dfs_referrals_fn = vfswrap_get_dfs_referrals,
2484
2485         /* Directory operations */
2486
2487         .opendir_fn = vfswrap_opendir,
2488         .fdopendir_fn = vfswrap_fdopendir,
2489         .readdir_fn = vfswrap_readdir,
2490         .seekdir_fn = vfswrap_seekdir,
2491         .telldir_fn = vfswrap_telldir,
2492         .rewind_dir_fn = vfswrap_rewinddir,
2493         .mkdir_fn = vfswrap_mkdir,
2494         .rmdir_fn = vfswrap_rmdir,
2495         .closedir_fn = vfswrap_closedir,
2496         .init_search_op_fn = vfswrap_init_search_op,
2497
2498         /* File operations */
2499
2500         .open_fn = vfswrap_open,
2501         .create_file_fn = vfswrap_create_file,
2502         .close_fn = vfswrap_close,
2503         .read_fn = vfswrap_read,
2504         .pread_fn = vfswrap_pread,
2505         .pread_send_fn = vfswrap_pread_send,
2506         .pread_recv_fn = vfswrap_asys_ssize_t_recv,
2507         .write_fn = vfswrap_write,
2508         .pwrite_fn = vfswrap_pwrite,
2509         .pwrite_send_fn = vfswrap_pwrite_send,
2510         .pwrite_recv_fn = vfswrap_asys_ssize_t_recv,
2511         .lseek_fn = vfswrap_lseek,
2512         .sendfile_fn = vfswrap_sendfile,
2513         .recvfile_fn = vfswrap_recvfile,
2514         .rename_fn = vfswrap_rename,
2515         .fsync_fn = vfswrap_fsync,
2516         .fsync_send_fn = vfswrap_fsync_send,
2517         .fsync_recv_fn = vfswrap_asys_int_recv,
2518         .stat_fn = vfswrap_stat,
2519         .fstat_fn = vfswrap_fstat,
2520         .lstat_fn = vfswrap_lstat,
2521         .get_alloc_size_fn = vfswrap_get_alloc_size,
2522         .unlink_fn = vfswrap_unlink,
2523         .chmod_fn = vfswrap_chmod,
2524         .fchmod_fn = vfswrap_fchmod,
2525         .chown_fn = vfswrap_chown,
2526         .fchown_fn = vfswrap_fchown,
2527         .lchown_fn = vfswrap_lchown,
2528         .chdir_fn = vfswrap_chdir,
2529         .getwd_fn = vfswrap_getwd,
2530         .ntimes_fn = vfswrap_ntimes,
2531         .ftruncate_fn = vfswrap_ftruncate,
2532         .fallocate_fn = vfswrap_fallocate,
2533         .lock_fn = vfswrap_lock,
2534         .kernel_flock_fn = vfswrap_kernel_flock,
2535         .linux_setlease_fn = vfswrap_linux_setlease,
2536         .getlock_fn = vfswrap_getlock,
2537         .symlink_fn = vfswrap_symlink,
2538         .readlink_fn = vfswrap_readlink,
2539         .link_fn = vfswrap_link,
2540         .mknod_fn = vfswrap_mknod,
2541         .realpath_fn = vfswrap_realpath,
2542         .notify_watch_fn = vfswrap_notify_watch,
2543         .chflags_fn = vfswrap_chflags,
2544         .file_id_create_fn = vfswrap_file_id_create,
2545         .streaminfo_fn = vfswrap_streaminfo,
2546         .get_real_filename_fn = vfswrap_get_real_filename,
2547         .connectpath_fn = vfswrap_connectpath,
2548         .brl_lock_windows_fn = vfswrap_brl_lock_windows,
2549         .brl_unlock_windows_fn = vfswrap_brl_unlock_windows,
2550         .brl_cancel_windows_fn = vfswrap_brl_cancel_windows,
2551         .strict_lock_fn = vfswrap_strict_lock,
2552         .strict_unlock_fn = vfswrap_strict_unlock,
2553         .translate_name_fn = vfswrap_translate_name,
2554         .fsctl_fn = vfswrap_fsctl,
2555         .copy_chunk_send_fn = vfswrap_copy_chunk_send,
2556         .copy_chunk_recv_fn = vfswrap_copy_chunk_recv,
2557         .get_compression_fn = vfswrap_get_compression,
2558         .set_compression_fn = vfswrap_set_compression,
2559
2560         /* NT ACL operations. */
2561
2562         .fget_nt_acl_fn = vfswrap_fget_nt_acl,
2563         .get_nt_acl_fn = vfswrap_get_nt_acl,
2564         .fset_nt_acl_fn = vfswrap_fset_nt_acl,
2565         .audit_file_fn = vfswrap_audit_file,
2566
2567         /* POSIX ACL operations. */
2568
2569         .chmod_acl_fn = vfswrap_chmod_acl,
2570         .fchmod_acl_fn = vfswrap_fchmod_acl,
2571
2572         .sys_acl_get_file_fn = vfswrap_sys_acl_get_file,
2573         .sys_acl_get_fd_fn = vfswrap_sys_acl_get_fd,
2574         .sys_acl_blob_get_file_fn = posix_sys_acl_blob_get_file,
2575         .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
2576         .sys_acl_set_file_fn = vfswrap_sys_acl_set_file,
2577         .sys_acl_set_fd_fn = vfswrap_sys_acl_set_fd,
2578         .sys_acl_delete_def_file_fn = vfswrap_sys_acl_delete_def_file,
2579
2580         /* EA operations. */
2581         .getxattr_fn = vfswrap_getxattr,
2582         .fgetxattr_fn = vfswrap_fgetxattr,
2583         .listxattr_fn = vfswrap_listxattr,
2584         .flistxattr_fn = vfswrap_flistxattr,
2585         .removexattr_fn = vfswrap_removexattr,
2586         .fremovexattr_fn = vfswrap_fremovexattr,
2587         .setxattr_fn = vfswrap_setxattr,
2588         .fsetxattr_fn = vfswrap_fsetxattr,
2589
2590         /* aio operations */
2591         .aio_force_fn = vfswrap_aio_force,
2592
2593         /* offline operations */
2594         .is_offline_fn = vfswrap_is_offline,
2595         .set_offline_fn = vfswrap_set_offline,
2596
2597         /* durable handle operations */
2598         .durable_cookie_fn = vfswrap_durable_cookie,
2599         .durable_disconnect_fn = vfswrap_durable_disconnect,
2600         .durable_reconnect_fn = vfswrap_durable_reconnect,
2601 };
2602
2603 NTSTATUS vfs_default_init(void);
2604 NTSTATUS vfs_default_init(void)
2605 {
2606         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
2607                                 DEFAULT_VFS_MODULE_NAME, &vfs_default_fns);
2608 }
2609
2610