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 asys_result results[outstanding_aio_calls];
 797         int i, ret;
 798
 799         if ((flags & TEVENT_FD_READ) == 0) {
 800                 return;
 801         }
 802
 803         ret = asys_results(asys_ctx, results, outstanding_aio_calls);
 804         if (ret < 0) {
 805                 DEBUG(1, ("asys_results returned %s\n", strerror(-ret)));
 806                 return;
 807         }
 808
 809         for (i=0; i<ret; i++) {
 810                 struct asys_result *result = &results[i];
 811                 struct tevent_req *req;
 812                 struct vfswrap_asys_state *state;
 813
 814                 if ((result->ret == -1) && (result->err == ECANCELED)) {
 815                         continue;
 816                 }
 817
 818                 req = talloc_get_type_abort(result->private_data,
 819                                             struct tevent_req);
 820                 state = tevent_req_data(req, struct vfswrap_asys_state);
 821
 822                 talloc_set_destructor(state, NULL);
 823
 824                 state->ret = result->ret;
 825                 state->err = result->err;
 826                 tevent_req_defer_callback(req, ev);
 827                 tevent_req_done(req);
 828         }
 829 }
 830
 831 static ssize_t vfswrap_asys_ssize_t_recv(struct tevent_req *req, int *err)
 832 {
 833         struct vfswrap_asys_state *state = tevent_req_data(
 834                 req, struct vfswrap_asys_state);
 835
 836         if (tevent_req_is_unix_error(req, err)) {
 837                 return -1;
 838         }
 839         *err = state->err;
 840         return state->ret;
 841 }
 842
 843 static int vfswrap_asys_int_recv(struct tevent_req *req, int *err)
 844 {
 845         struct vfswrap_asys_state *state = tevent_req_data(
 846                 req, struct vfswrap_asys_state);
 847
 848         if (tevent_req_is_unix_error(req, err)) {
 849                 return -1;
 850         }
 851         *err = state->err;
 852         return state->ret;
 853 }
 854
 855 static off_t vfswrap_lseek(vfs_handle_struct *handle, files_struct *fsp, off_t offset, int whence)
 856 {
 857         off_t result = 0;
 858
 859         START_PROFILE(syscall_lseek);
 860
 861         /* Cope with 'stat' file opens. */
 862         if (fsp->fh->fd != -1)
 863                 result = lseek(fsp->fh->fd, offset, whence);
 864
 865         /*
 866          * We want to maintain the fiction that we can seek
 867          * on a fifo for file system purposes. This allows
 868          * people to set up UNIX fifo's that feed data to Windows
 869          * applications. JRA.
 870          */
 871
 872         if((result == -1) && (errno == ESPIPE)) {
 873                 result = 0;
 874                 errno = 0;
 875         }
 876
 877         END_PROFILE(syscall_lseek);
 878         return result;
 879 }
 880
 881 static ssize_t vfswrap_sendfile(vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *hdr,
 882                         off_t offset, size_t n)
 883 {
 884         ssize_t result;
 885
 886         START_PROFILE_BYTES(syscall_sendfile, n);
 887         result = sys_sendfile(tofd, fromfsp->fh->fd, hdr, offset, n);
 888         END_PROFILE(syscall_sendfile);
 889         return result;
 890 }
 891
 892 static ssize_t vfswrap_recvfile(vfs_handle_struct *handle,
 893                         int fromfd,
 894                         files_struct *tofsp,
 895                         off_t offset,
 896                         size_t n)
 897 {
 898         ssize_t result;
 899
 900         START_PROFILE_BYTES(syscall_recvfile, n);
 901         result = sys_recvfile(fromfd, tofsp->fh->fd, offset, n);
 902         END_PROFILE(syscall_recvfile);
 903         return result;
 904 }
 905
 906 static int vfswrap_rename(vfs_handle_struct *handle,
 907                           const struct smb_filename *smb_fname_src,
 908                           const struct smb_filename *smb_fname_dst)
 909 {
 910         int result = -1;
 911
 912         START_PROFILE(syscall_rename);
 913
 914         if (smb_fname_src->stream_name || smb_fname_dst->stream_name) {
 915                 errno = ENOENT;
 916                 goto out;
 917         }
 918
 919         result = rename(smb_fname_src->base_name, smb_fname_dst->base_name);
 920
 921  out:
 922         END_PROFILE(syscall_rename);
 923         return result;
 924 }
 925
 926 static int vfswrap_fsync(vfs_handle_struct *handle, files_struct *fsp)
 927 {
 928 #ifdef HAVE_FSYNC
 929         int result;
 930
 931         START_PROFILE(syscall_fsync);
 932         result = fsync(fsp->fh->fd);
 933         END_PROFILE(syscall_fsync);
 934         return result;
 935 #else
 936         return 0;
 937 #endif
 938 }
 939
 940 static int vfswrap_stat(vfs_handle_struct *handle,
 941                         struct smb_filename *smb_fname)
 942 {
 943         int result = -1;
 944
 945         START_PROFILE(syscall_stat);
 946
 947         if (smb_fname->stream_name) {
 948                 errno = ENOENT;
 949                 goto out;
 950         }
 951
 952         result = sys_stat(smb_fname->base_name, &smb_fname->st,
 953                           lp_fake_directory_create_times(SNUM(handle->conn)));
 954  out:
 955         END_PROFILE(syscall_stat);
 956         return result;
 957 }
 958
 959 static int vfswrap_fstat(vfs_handle_struct *handle, files_struct *fsp, SMB_STRUCT_STAT *sbuf)
 960 {
 961         int result;
 962
 963         START_PROFILE(syscall_fstat);
 964         result = sys_fstat(fsp->fh->fd,
 965                            sbuf, lp_fake_directory_create_times(SNUM(handle->conn)));
 966         END_PROFILE(syscall_fstat);
 967         return result;
 968 }
 969
 970 static int vfswrap_lstat(vfs_handle_struct *handle,
 971                          struct smb_filename *smb_fname)
 972 {
 973         int result = -1;
 974
 975         START_PROFILE(syscall_lstat);
 976
 977         if (smb_fname->stream_name) {
 978                 errno = ENOENT;
 979                 goto out;
 980         }
 981
 982         result = sys_lstat(smb_fname->base_name, &smb_fname->st,
 983                            lp_fake_directory_create_times(SNUM(handle->conn)));
 984  out:
 985         END_PROFILE(syscall_lstat);
 986         return result;
 987 }
 988
 989 static NTSTATUS vfswrap_translate_name(struct vfs_handle_struct *handle,
 990                                        const char *name,
 991                                        enum vfs_translate_direction direction,
 992                                        TALLOC_CTX *mem_ctx,
 993                                        char **mapped_name)
 994 {
 995         return NT_STATUS_NONE_MAPPED;
 996 }
 997
 998 /*
 999  * Implement the default fsctl operation.
1000  */
1001 static bool vfswrap_logged_ioctl_message = false;
1002
1003 static NTSTATUS vfswrap_fsctl(struct vfs_handle_struct *handle,
1004                               struct files_struct *fsp,
1005                               TALLOC_CTX *ctx,
1006                               uint32_t function,
1007                               uint16_t req_flags, /* Needed for UNICODE ... */
1008                               const uint8_t *_in_data,
1009                               uint32_t in_len,
1010                               uint8_t **_out_data,
1011                               uint32_t max_out_len,
1012                               uint32_t *out_len)
1013 {
1014         const char *in_data = (const char *)_in_data;
1015         char **out_data = (char **)_out_data;
1016         NTSTATUS status;
1017
1018         switch (function) {
1019         case FSCTL_SET_SPARSE:
1020         {
1021                 bool set_sparse = true;
1022
1023                 if (in_len >= 1 && in_data[0] == 0) {
1024                         set_sparse = false;
1025                 }
1026
1027                 status = file_set_sparse(handle->conn, fsp, set_sparse);
1028
1029                 DEBUG(NT_STATUS_IS_OK(status) ? 10 : 9,
1030                       ("FSCTL_SET_SPARSE: fname[%s] set[%u] - %s\n",
1031                        smb_fname_str_dbg(fsp->fsp_name), set_sparse,
1032                        nt_errstr(status)));
1033
1034                 return status;
1035         }
1036
1037         case FSCTL_CREATE_OR_GET_OBJECT_ID:
1038         {
1039                 unsigned char objid[16];
1040                 char *return_data = NULL;
1041
1042                 /* This should return the object-id on this file.
1043                  * I think I'll make this be the inode+dev. JRA.
1044                  */
1045
1046                 DEBUG(10,("FSCTL_CREATE_OR_GET_OBJECT_ID: called on %s\n",
1047                           fsp_fnum_dbg(fsp)));
1048
1049                 *out_len = MIN(max_out_len, 64);
1050
1051                 /* Hmmm, will this cause problems if less data asked for? */
1052                 return_data = talloc_array(ctx, char, 64);
1053                 if (return_data == NULL) {
1054                         return NT_STATUS_NO_MEMORY;
1055                 }
1056
1057                 /* For backwards compatibility only store the dev/inode. */
1058                 push_file_id_16(return_data, &fsp->file_id);
1059                 memcpy(return_data+16,create_volume_objectid(fsp->conn,objid),16);
1060                 push_file_id_16(return_data+32, &fsp->file_id);
1061                 memset(return_data+48, 0, 16);
1062                 *out_data = return_data;
1063                 return NT_STATUS_OK;
1064         }
1065
1066         case FSCTL_GET_REPARSE_POINT:
1067         {
1068                 /* Fail it with STATUS_NOT_A_REPARSE_POINT */
1069                 DEBUG(10, ("FSCTL_GET_REPARSE_POINT: called on %s. "
1070                            "Status: NOT_IMPLEMENTED\n", fsp_fnum_dbg(fsp)));
1071                 return NT_STATUS_NOT_A_REPARSE_POINT;
1072         }
1073
1074         case FSCTL_SET_REPARSE_POINT:
1075         {
1076                 /* Fail it with STATUS_NOT_A_REPARSE_POINT */
1077                 DEBUG(10, ("FSCTL_SET_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_GET_SHADOW_COPY_DATA:
1083         {
1084                 /*
1085                  * This is called to retrieve the number of Shadow Copies (a.k.a. snapshots)
1086                  * and return their volume names.  If max_data_count is 16, then it is just
1087                  * asking for the number of volumes and length of the combined names.
1088                  *
1089                  * pdata is the data allocated by our caller, but that uses
1090                  * total_data_count (which is 0 in our case) rather than max_data_count.
1091                  * Allocate the correct amount and return the pointer to let
1092                  * it be deallocated when we return.
1093                  */
1094                 struct shadow_copy_data *shadow_data = NULL;
1095                 bool labels = False;
1096                 uint32 labels_data_count = 0;
1097                 uint32 i;
1098                 char *cur_pdata = NULL;
1099
1100                 if (max_out_len < 16) {
1101                         DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: max_data_count(%u) < 16 is invalid!\n",
1102                                 max_out_len));
1103                         return NT_STATUS_INVALID_PARAMETER;
1104                 }
1105
1106                 if (max_out_len > 16) {
1107                         labels = True;
1108                 }
1109
1110                 shadow_data = talloc_zero(ctx, struct shadow_copy_data);
1111                 if (shadow_data == NULL) {
1112                         DEBUG(0,("TALLOC_ZERO() failed!\n"));
1113                         return NT_STATUS_NO_MEMORY;
1114                 }
1115
1116                 /*
1117                  * Call the VFS routine to actually do the work.
1118                  */
1119                 if (SMB_VFS_GET_SHADOW_COPY_DATA(fsp, shadow_data, labels)!=0) {
1120                         int log_lev = 0;
1121                         if (errno == 0) {
1122                                 /* broken module didn't set errno on error */
1123                                 status = NT_STATUS_UNSUCCESSFUL;
1124                         } else {
1125                                 status = map_nt_error_from_unix(errno);
1126                                 if (NT_STATUS_EQUAL(status,
1127                                                     NT_STATUS_NOT_SUPPORTED)) {
1128                                         log_lev = 5;
1129                                 }
1130                         }
1131                         DEBUG(log_lev, ("FSCTL_GET_SHADOW_COPY_DATA: "
1132                                         "connectpath %s, failed - %s.\n",
1133                                         fsp->conn->connectpath,
1134                                         nt_errstr(status)));
1135                         TALLOC_FREE(shadow_data);
1136                         return status;
1137                 }
1138
1139                 labels_data_count = (shadow_data->num_volumes * 2 *
1140                                         sizeof(SHADOW_COPY_LABEL)) + 2;
1141
1142                 if (!labels) {
1143                         *out_len = 16;
1144                 } else {
1145                         *out_len = 12 + labels_data_count;
1146                 }
1147
1148                 if (max_out_len < *out_len) {
1149                         DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: max_data_count(%u) too small (%u) bytes needed!\n",
1150                                 max_out_len, *out_len));
1151                         TALLOC_FREE(shadow_data);
1152                         return NT_STATUS_BUFFER_TOO_SMALL;
1153                 }
1154
1155                 cur_pdata = talloc_zero_array(ctx, char, *out_len);
1156                 if (cur_pdata == NULL) {
1157                         TALLOC_FREE(shadow_data);
1158                         return NT_STATUS_NO_MEMORY;
1159                 }
1160
1161                 *out_data = cur_pdata;
1162
1163                 /* num_volumes 4 bytes */
1164                 SIVAL(cur_pdata, 0, shadow_data->num_volumes);
1165
1166                 if (labels) {
1167                         /* num_labels 4 bytes */
1168                         SIVAL(cur_pdata, 4, shadow_data->num_volumes);
1169                 }
1170
1171                 /* needed_data_count 4 bytes */
1172                 SIVAL(cur_pdata, 8, labels_data_count);
1173
1174                 cur_pdata += 12;
1175
1176                 DEBUG(10,("FSCTL_GET_SHADOW_COPY_DATA: %u volumes for path[%s].\n",
1177                           shadow_data->num_volumes, fsp_str_dbg(fsp)));
1178                 if (labels && shadow_data->labels) {
1179                         for (i=0; i<shadow_data->num_volumes; i++) {
1180                                 srvstr_push(cur_pdata, req_flags,
1181                                             cur_pdata, shadow_data->labels[i],
1182                                             2 * sizeof(SHADOW_COPY_LABEL),
1183                                             STR_UNICODE|STR_TERMINATE);
1184                                 cur_pdata += 2 * sizeof(SHADOW_COPY_LABEL);
1185                                 DEBUGADD(10,("Label[%u]: '%s'\n",i,shadow_data->labels[i]));
1186                         }
1187                 }
1188
1189                 TALLOC_FREE(shadow_data);
1190
1191                 return NT_STATUS_OK;
1192         }
1193
1194         case FSCTL_FIND_FILES_BY_SID:
1195         {
1196                 /* pretend this succeeded -
1197                  *
1198                  * we have to send back a list with all files owned by this SID
1199                  *
1200                  * but I have to check that --metze
1201                  */
1202                 struct dom_sid sid;
1203                 uid_t uid;
1204                 size_t sid_len;
1205
1206                 DEBUG(10, ("FSCTL_FIND_FILES_BY_SID: called on %s\n",
1207                            fsp_fnum_dbg(fsp)));
1208
1209                 if (in_len < 8) {
1210                         /* NT_STATUS_BUFFER_TOO_SMALL maybe? */
1211                         return NT_STATUS_INVALID_PARAMETER;
1212                 }
1213
1214                 sid_len = MIN(in_len - 4,SID_MAX_SIZE);
1215
1216                 /* unknown 4 bytes: this is not the length of the sid :-(  */
1217                 /*unknown = IVAL(pdata,0);*/
1218
1219                 if (!sid_parse(in_data + 4, sid_len, &sid)) {
1220                         return NT_STATUS_INVALID_PARAMETER;
1221                 }
1222                 DEBUGADD(10, ("for SID: %s\n", sid_string_dbg(&sid)));
1223
1224                 if (!sid_to_uid(&sid, &uid)) {
1225                         DEBUG(0,("sid_to_uid: failed, sid[%s] sid_len[%lu]\n",
1226                                  sid_string_dbg(&sid),
1227                                  (unsigned long)sid_len));
1228                         uid = (-1);
1229                 }
1230
1231                 /* we can take a look at the find source :-)
1232                  *
1233                  * find ./ -uid $uid  -name '*'   is what we need here
1234                  *
1235                  *
1236                  * and send 4bytes len and then NULL terminated unicode strings
1237                  * for each file
1238                  *
1239                  * but I don't know how to deal with the paged results
1240                  * (maybe we can hang the result anywhere in the fsp struct)
1241                  *
1242                  * but I don't know how to deal with the paged results
1243                  * (maybe we can hang the result anywhere in the fsp struct)
1244                  *
1245                  * we don't send all files at once
1246                  * and at the next we should *not* start from the beginning,
1247                  * so we have to cache the result
1248                  *
1249                  * --metze
1250                  */
1251
1252                 /* this works for now... */
1253                 return NT_STATUS_OK;
1254         }
1255
1256         case FSCTL_QUERY_ALLOCATED_RANGES:
1257         {
1258                 /* FIXME: This is just a dummy reply, telling that all of the
1259                  * file is allocated. MKS cp needs that.
1260                  * Adding the real allocated ranges via FIEMAP on Linux
1261                  * and SEEK_DATA/SEEK_HOLE on Solaris is needed to make
1262                  * this FSCTL correct for sparse files.
1263                  */
1264                 uint64_t offset, length;
1265                 char *out_data_tmp = NULL;
1266
1267                 if (in_len != 16) {
1268                         DEBUG(0,("FSCTL_QUERY_ALLOCATED_RANGES: data_count(%u) != 16 is invalid!\n",
1269                                 in_len));
1270                         return NT_STATUS_INVALID_PARAMETER;
1271                 }
1272
1273                 if (max_out_len < 16) {
1274                         DEBUG(0,("FSCTL_QUERY_ALLOCATED_RANGES: max_out_len (%u) < 16 is invalid!\n",
1275                                 max_out_len));
1276                         return NT_STATUS_INVALID_PARAMETER;
1277                 }
1278
1279                 offset = BVAL(in_data,0);
1280                 length = BVAL(in_data,8);
1281
1282                 if (offset + length < offset) {
1283                         /* No 64-bit integer wrap. */
1284                         return NT_STATUS_INVALID_PARAMETER;
1285                 }
1286
1287                 /* Shouldn't this be SMB_VFS_STAT ... ? */
1288                 status = vfs_stat_fsp(fsp);
1289                 if (!NT_STATUS_IS_OK(status)) {
1290                         return status;
1291                 }
1292
1293                 *out_len = 16;
1294                 out_data_tmp = talloc_array(ctx, char, *out_len);
1295                 if (out_data_tmp == NULL) {
1296                         DEBUG(10, ("unable to allocate memory for response\n"));
1297                         return NT_STATUS_NO_MEMORY;
1298                 }
1299
1300                 if (offset > fsp->fsp_name->st.st_ex_size ||
1301                                 fsp->fsp_name->st.st_ex_size == 0 ||
1302                                 length == 0) {
1303                         memset(out_data_tmp, 0, *out_len);
1304                 } else {
1305                         uint64_t end = offset + length;
1306                         end = MIN(end, fsp->fsp_name->st.st_ex_size);
1307                         SBVAL(out_data_tmp, 0, 0);
1308                         SBVAL(out_data_tmp, 8, end);
1309                 }
1310
1311                 *out_data = out_data_tmp;
1312
1313                 return NT_STATUS_OK;
1314         }
1315
1316         case FSCTL_IS_VOLUME_DIRTY:
1317         {
1318                 DEBUG(10,("FSCTL_IS_VOLUME_DIRTY: called on %s "
1319                           "(but remotely not supported)\n", fsp_fnum_dbg(fsp)));
1320                 /*
1321                  * http://msdn.microsoft.com/en-us/library/cc232128%28PROT.10%29.aspx
1322                  * says we have to respond with NT_STATUS_INVALID_PARAMETER
1323                  */
1324                 return NT_STATUS_INVALID_PARAMETER;
1325         }
1326
1327         default:
1328                 /*
1329                  * Only print once ... unfortunately there could be lots of
1330                  * different FSCTLs that are called.
1331                  */
1332                 if (!vfswrap_logged_ioctl_message) {
1333                         vfswrap_logged_ioctl_message = true;
1334                         DEBUG(2, ("%s (0x%x): Currently not implemented.\n",
1335                         __func__, function));
1336                 }
1337         }
1338
1339         return NT_STATUS_NOT_SUPPORTED;
1340 }
1341
1342 struct vfs_cc_state {
1343         off_t copied;
1344         uint8_t buf[65536];
1345 };
1346
1347 static struct tevent_req *vfswrap_copy_chunk_send(struct vfs_handle_struct *handle,
1348                                                   TALLOC_CTX *mem_ctx,
1349                                                   struct tevent_context *ev,
1350                                                   struct files_struct *src_fsp,
1351                                                   off_t src_off,
1352                                                   struct files_struct *dest_fsp,
1353                                                   off_t dest_off,
1354                                                   off_t num)
1355 {
1356         struct tevent_req *req;
1357         struct vfs_cc_state *vfs_cc_state;
1358         NTSTATUS status;
1359
1360         DEBUG(10, ("performing server side copy chunk of length %lu\n",
1361                    (unsigned long)num));
1362
1363         req = tevent_req_create(mem_ctx, &vfs_cc_state, struct vfs_cc_state);
1364         if (req == NULL) {
1365                 return NULL;
1366         }
1367
1368         status = vfs_stat_fsp(src_fsp);
1369         if (tevent_req_nterror(req, status)) {
1370                 return tevent_req_post(req, ev);
1371         }
1372
1373         if (src_fsp->fsp_name->st.st_ex_size < src_off + num) {
1374                 /*
1375                  * [MS-SMB2] 3.3.5.15.6 Handling a Server-Side Data Copy Request
1376                  *   If the SourceOffset or SourceOffset + Length extends beyond
1377                  *   the end of file, the server SHOULD<240> treat this as a
1378                  *   STATUS_END_OF_FILE error.
1379                  * ...
1380                  *   <240> Section 3.3.5.15.6: Windows servers will return
1381                  *   STATUS_INVALID_VIEW_SIZE instead of STATUS_END_OF_FILE.
1382                  */
1383                 tevent_req_nterror(req, NT_STATUS_INVALID_VIEW_SIZE);
1384                 return tevent_req_post(req, ev);
1385         }
1386
1387         /* could use 2.6.33+ sendfile here to do this in kernel */
1388         while (vfs_cc_state->copied < num) {
1389                 ssize_t ret;
1390                 struct lock_struct lck;
1391                 int saved_errno;
1392
1393                 off_t this_num = MIN(sizeof(vfs_cc_state->buf),
1394                                      num - vfs_cc_state->copied);
1395
1396                 init_strict_lock_struct(src_fsp,
1397                                         src_fsp->op->global->open_persistent_id,
1398                                         src_off,
1399                                         this_num,
1400                                         READ_LOCK,
1401                                         &lck);
1402
1403                 if (!SMB_VFS_STRICT_LOCK(src_fsp->conn, src_fsp, &lck)) {
1404                         tevent_req_nterror(req, NT_STATUS_FILE_LOCK_CONFLICT);
1405                         return tevent_req_post(req, ev);
1406                 }
1407
1408                 ret = SMB_VFS_PREAD(src_fsp, vfs_cc_state->buf,
1409                                     this_num, src_off);
1410                 if (ret == -1) {
1411                         saved_errno = errno;
1412                 }
1413
1414                 SMB_VFS_STRICT_UNLOCK(src_fsp->conn, src_fsp, &lck);
1415
1416                 if (ret == -1) {
1417                         errno = saved_errno;
1418                         tevent_req_nterror(req, map_nt_error_from_unix(errno));
1419                         return tevent_req_post(req, ev);
1420                 }
1421                 if (ret != this_num) {
1422                         /* zero tolerance for short reads */
1423                         tevent_req_nterror(req, NT_STATUS_IO_DEVICE_ERROR);
1424                         return tevent_req_post(req, ev);
1425                 }
1426
1427                 src_off += ret;
1428
1429                 init_strict_lock_struct(dest_fsp,
1430                                         dest_fsp->op->global->open_persistent_id,
1431                                         dest_off,
1432                                         this_num,
1433                                         WRITE_LOCK,
1434                                         &lck);
1435
1436                 if (!SMB_VFS_STRICT_LOCK(dest_fsp->conn, dest_fsp, &lck)) {
1437                         tevent_req_nterror(req, NT_STATUS_FILE_LOCK_CONFLICT);
1438                         return tevent_req_post(req, ev);
1439                 }
1440
1441                 ret = SMB_VFS_PWRITE(dest_fsp, vfs_cc_state->buf,
1442                                      this_num, dest_off);
1443                 if (ret == -1) {
1444                         saved_errno = errno;
1445                 }
1446
1447                 SMB_VFS_STRICT_UNLOCK(src_fsp->conn, src_fsp, &lck);
1448
1449                 if (ret == -1) {
1450                         errno = saved_errno;
1451                         tevent_req_nterror(req, map_nt_error_from_unix(errno));
1452                         return tevent_req_post(req, ev);
1453                 }
1454                 if (ret != this_num) {
1455                         /* zero tolerance for short writes */
1456                         tevent_req_nterror(req, NT_STATUS_IO_DEVICE_ERROR);
1457                         return tevent_req_post(req, ev);
1458                 }
1459                 dest_off += ret;
1460
1461                 vfs_cc_state->copied += this_num;
1462         }
1463
1464         tevent_req_done(req);
1465         return tevent_req_post(req, ev);
1466 }
1467
1468 static NTSTATUS vfswrap_copy_chunk_recv(struct vfs_handle_struct *handle,
1469                                         struct tevent_req *req,
1470                                         off_t *copied)
1471 {
1472         struct vfs_cc_state *vfs_cc_state = tevent_req_data(req,
1473                                                         struct vfs_cc_state);
1474         NTSTATUS status;
1475
1476         if (tevent_req_is_nterror(req, &status)) {
1477                 DEBUG(2, ("server side copy chunk failed: %s\n",
1478                           nt_errstr(status)));
1479                 *copied = 0;
1480                 tevent_req_received(req);
1481                 return status;
1482         }
1483
1484         *copied = vfs_cc_state->copied;
1485         DEBUG(10, ("server side copy chunk copied %lu\n",
1486                    (unsigned long)*copied));
1487         tevent_req_received(req);
1488
1489         return NT_STATUS_OK;
1490 }
1491
1492 static NTSTATUS vfswrap_get_compression(struct vfs_handle_struct *handle,
1493                                         TALLOC_CTX *mem_ctx,
1494                                         struct files_struct *fsp,
1495                                         struct smb_filename *smb_fname,
1496                                         uint16_t *_compression_fmt)
1497 {
1498         return NT_STATUS_INVALID_DEVICE_REQUEST;
1499 }
1500
1501 static NTSTATUS vfswrap_set_compression(struct vfs_handle_struct *handle,
1502                                         TALLOC_CTX *mem_ctx,
1503                                         struct files_struct *fsp,
1504                                         uint16_t compression_fmt)
1505 {
1506         return NT_STATUS_INVALID_DEVICE_REQUEST;
1507 }
1508
1509 /********************************************************************
1510  Given a stat buffer return the allocated size on disk, taking into
1511  account sparse files.
1512 ********************************************************************/
1513 static uint64_t vfswrap_get_alloc_size(vfs_handle_struct *handle,
1514                                        struct files_struct *fsp,
1515                                        const SMB_STRUCT_STAT *sbuf)
1516 {
1517         uint64_t result;
1518
1519         START_PROFILE(syscall_get_alloc_size);
1520
1521         if(S_ISDIR(sbuf->st_ex_mode)) {
1522                 result = 0;
1523                 goto out;
1524         }
1525
1526 #if defined(HAVE_STAT_ST_BLOCKS) && defined(STAT_ST_BLOCKSIZE)
1527         /* The type of st_blocksize is blkcnt_t which *MUST* be
1528            signed (according to POSIX) and can be less than 64-bits.
1529            Ensure when we're converting to 64 bits wide we don't
1530            sign extend. */
1531 #if defined(SIZEOF_BLKCNT_T_8)
1532         result = (uint64_t)STAT_ST_BLOCKSIZE * (uint64_t)sbuf->st_ex_blocks;
1533 #elif defined(SIZEOF_BLKCNT_T_4)
1534         {
1535                 uint64_t bs = ((uint64_t)sbuf->st_ex_blocks) & 0xFFFFFFFFLL;
1536                 result = (uint64_t)STAT_ST_BLOCKSIZE * bs;
1537         }
1538 #else
1539 #error SIZEOF_BLKCNT_T_NOT_A_SUPPORTED_VALUE
1540 #endif
1541         if (result == 0) {
1542                 /*
1543                  * Some file systems do not allocate a block for very
1544                  * small files. But for non-empty file should report a
1545                  * positive size.
1546                  */
1547
1548                 uint64_t filesize = get_file_size_stat(sbuf);
1549                 if (filesize > 0) {
1550                         result = MIN((uint64_t)STAT_ST_BLOCKSIZE, filesize);
1551                 }
1552         }
1553 #else
1554         result = get_file_size_stat(sbuf);
1555 #endif
1556
1557         if (fsp && fsp->initial_allocation_size)
1558                 result = MAX(result,fsp->initial_allocation_size);
1559
1560         result = smb_roundup(handle->conn, result);
1561
1562  out:
1563         END_PROFILE(syscall_get_alloc_size);
1564         return result;
1565 }
1566
1567 static int vfswrap_unlink(vfs_handle_struct *handle,
1568                           const struct smb_filename *smb_fname)
1569 {
1570         int result = -1;
1571
1572         START_PROFILE(syscall_unlink);
1573
1574         if (smb_fname->stream_name) {
1575                 errno = ENOENT;
1576                 goto out;
1577         }
1578         result = unlink(smb_fname->base_name);
1579
1580  out:
1581         END_PROFILE(syscall_unlink);
1582         return result;
1583 }
1584
1585 static int vfswrap_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
1586 {
1587         int result;
1588
1589         START_PROFILE(syscall_chmod);
1590
1591         /*
1592          * We need to do this due to the fact that the default POSIX ACL
1593          * chmod modifies the ACL *mask* for the group owner, not the
1594          * group owner bits directly. JRA.
1595          */
1596
1597
1598         {
1599                 int saved_errno = errno; /* We might get ENOSYS */
1600                 if ((result = SMB_VFS_CHMOD_ACL(handle->conn, path, mode)) == 0) {
1601                         END_PROFILE(syscall_chmod);
1602                         return result;
1603                 }
1604                 /* Error - return the old errno. */
1605                 errno = saved_errno;
1606         }
1607
1608         result = chmod(path, mode);
1609         END_PROFILE(syscall_chmod);
1610         return result;
1611 }
1612
1613 static int vfswrap_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
1614 {
1615         int result;
1616
1617         START_PROFILE(syscall_fchmod);
1618
1619         /*
1620          * We need to do this due to the fact that the default POSIX ACL
1621          * chmod modifies the ACL *mask* for the group owner, not the
1622          * group owner bits directly. JRA.
1623          */
1624
1625         {
1626                 int saved_errno = errno; /* We might get ENOSYS */
1627                 if ((result = SMB_VFS_FCHMOD_ACL(fsp, mode)) == 0) {
1628                         END_PROFILE(syscall_fchmod);
1629                         return result;
1630                 }
1631                 /* Error - return the old errno. */
1632                 errno = saved_errno;
1633         }
1634
1635 #if defined(HAVE_FCHMOD)
1636         result = fchmod(fsp->fh->fd, mode);
1637 #else
1638         result = -1;
1639         errno = ENOSYS;
1640 #endif
1641
1642         END_PROFILE(syscall_fchmod);
1643         return result;
1644 }
1645
1646 static int vfswrap_chown(vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
1647 {
1648         int result;
1649
1650         START_PROFILE(syscall_chown);
1651         result = chown(path, uid, gid);
1652         END_PROFILE(syscall_chown);
1653         return result;
1654 }
1655
1656 static int vfswrap_fchown(vfs_handle_struct *handle, files_struct *fsp, uid_t uid, gid_t gid)
1657 {
1658 #ifdef HAVE_FCHOWN
1659         int result;
1660
1661         START_PROFILE(syscall_fchown);
1662         result = fchown(fsp->fh->fd, uid, gid);
1663         END_PROFILE(syscall_fchown);
1664         return result;
1665 #else
1666         errno = ENOSYS;
1667         return -1;
1668 #endif
1669 }
1670
1671 static int vfswrap_lchown(vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
1672 {
1673         int result;
1674
1675         START_PROFILE(syscall_lchown);
1676         result = lchown(path, uid, gid);
1677         END_PROFILE(syscall_lchown);
1678         return result;
1679 }
1680
1681 static int vfswrap_chdir(vfs_handle_struct *handle, const char *path)
1682 {
1683         int result;
1684
1685         START_PROFILE(syscall_chdir);
1686         result = chdir(path);
1687         END_PROFILE(syscall_chdir);
1688         return result;
1689 }
1690
1691 static char *vfswrap_getwd(vfs_handle_struct *handle)
1692 {
1693         char *result;
1694
1695         START_PROFILE(syscall_getwd);
1696         result = sys_getwd();
1697         END_PROFILE(syscall_getwd);
1698         return result;
1699 }
1700
1701 /*********************************************************************
1702  nsec timestamp resolution call. Convert down to whatever the underlying
1703  system will support.
1704 **********************************************************************/
1705
1706 static int vfswrap_ntimes(vfs_handle_struct *handle,
1707                           const struct smb_filename *smb_fname,
1708                           struct smb_file_time *ft)
1709 {
1710         int result = -1;
1711
1712         START_PROFILE(syscall_ntimes);
1713
1714         if (smb_fname->stream_name) {
1715                 errno = ENOENT;
1716                 goto out;
1717         }
1718
1719         if (ft != NULL) {
1720                 if (null_timespec(ft->atime)) {
1721                         ft->atime= smb_fname->st.st_ex_atime;
1722                 }
1723
1724                 if (null_timespec(ft->mtime)) {
1725                         ft->mtime = smb_fname->st.st_ex_mtime;
1726                 }
1727
1728                 if (!null_timespec(ft->create_time)) {
1729                         set_create_timespec_ea(handle->conn,
1730                                                smb_fname,
1731                                                ft->create_time);
1732                 }
1733
1734                 if ((timespec_compare(&ft->atime,
1735                                       &smb_fname->st.st_ex_atime) == 0) &&
1736                     (timespec_compare(&ft->mtime,
1737                                       &smb_fname->st.st_ex_mtime) == 0)) {
1738                         return 0;
1739                 }
1740         }
1741
1742 #if defined(HAVE_UTIMENSAT)
1743         if (ft != NULL) {
1744                 struct timespec ts[2];
1745                 ts[0] = ft->atime;
1746                 ts[1] = ft->mtime;
1747                 result = utimensat(AT_FDCWD, smb_fname->base_name, ts, 0);
1748         } else {
1749                 result = utimensat(AT_FDCWD, smb_fname->base_name, NULL, 0);
1750         }
1751         if (!((result == -1) && (errno == ENOSYS))) {
1752                 goto out;
1753         }
1754 #endif
1755 #if defined(HAVE_UTIMES)
1756         if (ft != NULL) {
1757                 struct timeval tv[2];
1758                 tv[0] = convert_timespec_to_timeval(ft->atime);
1759                 tv[1] = convert_timespec_to_timeval(ft->mtime);
1760                 result = utimes(smb_fname->base_name, tv);
1761         } else {
1762                 result = utimes(smb_fname->base_name, NULL);
1763         }
1764         if (!((result == -1) && (errno == ENOSYS))) {
1765                 goto out;
1766         }
1767 #endif
1768 #if defined(HAVE_UTIME)
1769         if (ft != NULL) {
1770                 struct utimbuf times;
1771                 times.actime = convert_timespec_to_time_t(ft->atime);
1772                 times.modtime = convert_timespec_to_time_t(ft->mtime);
1773                 result = utime(smb_fname->base_name, &times);
1774         } else {
1775                 result = utime(smb_fname->base_name, NULL);
1776         }
1777         if (!((result == -1) && (errno == ENOSYS))) {
1778                 goto out;
1779         }
1780 #endif
1781         errno = ENOSYS;
1782         result = -1;
1783
1784  out:
1785         END_PROFILE(syscall_ntimes);
1786         return result;
1787 }
1788
1789 /*********************************************************************
1790  A version of ftruncate that will write the space on disk if strict
1791  allocate is set.
1792 **********************************************************************/
1793
1794 static int strict_allocate_ftruncate(vfs_handle_struct *handle, files_struct *fsp, off_t len)
1795 {
1796         off_t space_to_write;
1797         uint64_t space_avail;
1798         uint64_t bsize,dfree,dsize;
1799         int ret;
1800         NTSTATUS status;
1801         SMB_STRUCT_STAT *pst;
1802
1803         status = vfs_stat_fsp(fsp);
1804         if (!NT_STATUS_IS_OK(status)) {
1805                 return -1;
1806         }
1807         pst = &fsp->fsp_name->st;
1808
1809 #ifdef S_ISFIFO
1810         if (S_ISFIFO(pst->st_ex_mode))
1811                 return 0;
1812 #endif
1813
1814         if (pst->st_ex_size == len)
1815                 return 0;
1816
1817         /* Shrink - just ftruncate. */
1818         if (pst->st_ex_size > len)
1819                 return ftruncate(fsp->fh->fd, len);
1820
1821         space_to_write = len - pst->st_ex_size;
1822
1823         /* for allocation try fallocate first. This can fail on some
1824            platforms e.g. when the filesystem doesn't support it and no
1825            emulation is being done by the libc (like on AIX with JFS1). In that
1826            case we do our own emulation. fallocate implementations can
1827            return ENOTSUP or EINVAL in cases like that. */
1828         ret = SMB_VFS_FALLOCATE(fsp, VFS_FALLOCATE_EXTEND_SIZE,
1829                                 pst->st_ex_size, space_to_write);
1830         if (ret == ENOSPC) {
1831                 errno = ENOSPC;
1832                 return -1;
1833         }
1834         if (ret == 0) {
1835                 return 0;
1836         }
1837         DEBUG(10,("strict_allocate_ftruncate: SMB_VFS_FALLOCATE failed with "
1838                 "error %d. Falling back to slow manual allocation\n", ret));
1839
1840         /* available disk space is enough or not? */
1841         space_avail = get_dfree_info(fsp->conn,
1842                                      fsp->fsp_name->base_name, false,
1843                                      &bsize,&dfree,&dsize);
1844         /* space_avail is 1k blocks */
1845         if (space_avail == (uint64_t)-1 ||
1846                         ((uint64_t)space_to_write/1024 > space_avail) ) {
1847                 errno = ENOSPC;
1848                 return -1;
1849         }
1850
1851         /* Write out the real space on disk. */
1852         ret = vfs_slow_fallocate(fsp, pst->st_ex_size, space_to_write);
1853         if (ret != 0) {
1854                 errno = ret;
1855                 ret = -1;
1856         }
1857
1858         return 0;
1859 }
1860
1861 static int vfswrap_ftruncate(vfs_handle_struct *handle, files_struct *fsp, off_t len)
1862 {
1863         int result = -1;
1864         SMB_STRUCT_STAT *pst;
1865         NTSTATUS status;
1866         char c = 0;
1867
1868         START_PROFILE(syscall_ftruncate);
1869
1870         if (lp_strict_allocate(SNUM(fsp->conn)) && !fsp->is_sparse) {
1871                 result = strict_allocate_ftruncate(handle, fsp, len);
1872                 END_PROFILE(syscall_ftruncate);
1873                 return result;
1874         }
1875
1876         /* we used to just check HAVE_FTRUNCATE_EXTEND and only use
1877            ftruncate if the system supports it. Then I discovered that
1878            you can have some filesystems that support ftruncate
1879            expansion and some that don't! On Linux fat can't do
1880            ftruncate extend but ext2 can. */
1881
1882         result = ftruncate(fsp->fh->fd, len);
1883         if (result == 0)
1884                 goto done;
1885
1886         /* According to W. R. Stevens advanced UNIX prog. Pure 4.3 BSD cannot
1887            extend a file with ftruncate. Provide alternate implementation
1888            for this */
1889
1890         /* Do an fstat to see if the file is longer than the requested
1891            size in which case the ftruncate above should have
1892            succeeded or shorter, in which case seek to len - 1 and
1893            write 1 byte of zero */
1894         status = vfs_stat_fsp(fsp);
1895         if (!NT_STATUS_IS_OK(status)) {
1896                 goto done;
1897         }
1898         pst = &fsp->fsp_name->st;
1899
1900 #ifdef S_ISFIFO
1901         if (S_ISFIFO(pst->st_ex_mode)) {
1902                 result = 0;
1903                 goto done;
1904         }
1905 #endif
1906
1907         if (pst->st_ex_size == len) {
1908                 result = 0;
1909                 goto done;
1910         }
1911
1912         if (pst->st_ex_size > len) {
1913                 /* the ftruncate should have worked */
1914                 goto done;
1915         }
1916
1917         if (SMB_VFS_PWRITE(fsp, &c, 1, len-1)!=1) {
1918                 goto done;
1919         }
1920
1921         result = 0;
1922
1923   done:
1924
1925         END_PROFILE(syscall_ftruncate);
1926         return result;
1927 }
1928
1929 static int vfswrap_fallocate(vfs_handle_struct *handle,
1930                         files_struct *fsp,
1931                         enum vfs_fallocate_mode mode,
1932                         off_t offset,
1933                         off_t len)
1934 {
1935         int result;
1936
1937         START_PROFILE(syscall_fallocate);
1938         if (mode == VFS_FALLOCATE_EXTEND_SIZE) {
1939                 result = sys_posix_fallocate(fsp->fh->fd, offset, len);
1940         } else if (mode == VFS_FALLOCATE_KEEP_SIZE) {
1941                 result = sys_fallocate(fsp->fh->fd, mode, offset, len);
1942         } else {
1943                 errno = EINVAL;
1944                 result = -1;
1945         }
1946         END_PROFILE(syscall_fallocate);
1947         return result;
1948 }
1949
1950 static bool vfswrap_lock(vfs_handle_struct *handle, files_struct *fsp, int op, off_t offset, off_t count, int type)
1951 {
1952         bool result;
1953
1954         START_PROFILE(syscall_fcntl_lock);
1955         result =  fcntl_lock(fsp->fh->fd, op, offset, count, type);
1956         END_PROFILE(syscall_fcntl_lock);
1957         return result;
1958 }
1959
1960 static int vfswrap_kernel_flock(vfs_handle_struct *handle, files_struct *fsp,
1961                                 uint32 share_mode, uint32 access_mask)
1962 {
1963         START_PROFILE(syscall_kernel_flock);
1964         kernel_flock(fsp->fh->fd, share_mode, access_mask);
1965         END_PROFILE(syscall_kernel_flock);
1966         return 0;
1967 }
1968
1969 static bool vfswrap_getlock(vfs_handle_struct *handle, files_struct *fsp, off_t *poffset, off_t *pcount, int *ptype, pid_t *ppid)
1970 {
1971         bool result;
1972
1973         START_PROFILE(syscall_fcntl_getlock);
1974         result =  fcntl_getlock(fsp->fh->fd, poffset, pcount, ptype, ppid);
1975         END_PROFILE(syscall_fcntl_getlock);
1976         return result;
1977 }
1978
1979 static int vfswrap_linux_setlease(vfs_handle_struct *handle, files_struct *fsp,
1980                                 int leasetype)
1981 {
1982         int result = -1;
1983
1984         START_PROFILE(syscall_linux_setlease);
1985
1986 #ifdef HAVE_KERNEL_OPLOCKS_LINUX
1987         result = linux_setlease(fsp->fh->fd, leasetype);
1988 #else
1989         errno = ENOSYS;
1990 #endif
1991         END_PROFILE(syscall_linux_setlease);
1992         return result;
1993 }
1994
1995 static int vfswrap_symlink(vfs_handle_struct *handle, const char *oldpath, const char *newpath)
1996 {
1997         int result;
1998
1999         START_PROFILE(syscall_symlink);
2000         result = symlink(oldpath, newpath);
2001         END_PROFILE(syscall_symlink);
2002         return result;
2003 }
2004
2005 static int vfswrap_readlink(vfs_handle_struct *handle, const char *path, char *buf, size_t bufsiz)
2006 {
2007         int result;
2008
2009         START_PROFILE(syscall_readlink);
2010         result = readlink(path, buf, bufsiz);
2011         END_PROFILE(syscall_readlink);
2012         return result;
2013 }
2014
2015 static int vfswrap_link(vfs_handle_struct *handle, const char *oldpath, const char *newpath)
2016 {
2017         int result;
2018
2019         START_PROFILE(syscall_link);
2020         result = link(oldpath, newpath);
2021         END_PROFILE(syscall_link);
2022         return result;
2023 }
2024
2025 static int vfswrap_mknod(vfs_handle_struct *handle, const char *pathname, mode_t mode, SMB_DEV_T dev)
2026 {
2027         int result;
2028
2029         START_PROFILE(syscall_mknod);
2030         result = sys_mknod(pathname, mode, dev);
2031         END_PROFILE(syscall_mknod);
2032         return result;
2033 }
2034
2035 static char *vfswrap_realpath(vfs_handle_struct *handle, const char *path)
2036 {
2037         char *result;
2038
2039         START_PROFILE(syscall_realpath);
2040 #ifdef REALPATH_TAKES_NULL
2041         result = realpath(path, NULL);
2042 #else
2043         result = SMB_MALLOC_ARRAY(char, PATH_MAX+1);
2044         if (result) {
2045                 char *resolved_path = realpath(path, result);
2046                 if (!resolved_path) {
2047                         SAFE_FREE(result);
2048                 } else {
2049                         /* SMB_ASSERT(result == resolved_path) ? */
2050                         result = resolved_path;
2051                 }
2052         }
2053 #endif
2054         END_PROFILE(syscall_realpath);
2055         return result;
2056 }
2057
2058 static NTSTATUS vfswrap_notify_watch(vfs_handle_struct *vfs_handle,
2059                                      struct sys_notify_context *ctx,
2060                                      const char *path,
2061                                      uint32_t *filter,
2062                                      uint32_t *subdir_filter,
2063                                      void (*callback)(struct sys_notify_context *ctx,
2064                                                       void *private_data,
2065                                                       struct notify_event *ev),
2066                                      void *private_data, void *handle)
2067 {
2068         /*
2069          * So far inotify is the only supported default notify mechanism. If
2070          * another platform like the the BSD's or a proprietary Unix comes
2071          * along and wants another default, we can play the same trick we
2072          * played with Posix ACLs.
2073          *
2074          * Until that is the case, hard-code inotify here.
2075          */
2076 #ifdef HAVE_INOTIFY
2077         if (lp_kernel_change_notify(vfs_handle->conn->params)) {
2078                 return inotify_watch(ctx, path, filter, subdir_filter,
2079                                      callback, private_data, handle);
2080         }
2081 #endif
2082         /*
2083          * Do nothing, leave everything to notify_internal.c
2084          */
2085         return NT_STATUS_OK;
2086 }
2087
2088 static int vfswrap_chflags(vfs_handle_struct *handle, const char *path,
2089                            unsigned int flags)
2090 {
2091 #ifdef HAVE_CHFLAGS
2092         return chflags(path, flags);
2093 #else
2094         errno = ENOSYS;
2095         return -1;
2096 #endif
2097 }
2098
2099 static struct file_id vfswrap_file_id_create(struct vfs_handle_struct *handle,
2100                                              const SMB_STRUCT_STAT *sbuf)
2101 {
2102         struct file_id key;
2103
2104         /* the ZERO_STRUCT ensures padding doesn't break using the key as a
2105          * blob */
2106         ZERO_STRUCT(key);
2107
2108         key.devid = sbuf->st_ex_dev;
2109         key.inode = sbuf->st_ex_ino;
2110         /* key.extid is unused by default. */
2111
2112         return key;
2113 }
2114
2115 static NTSTATUS vfswrap_streaminfo(vfs_handle_struct *handle,
2116                                    struct files_struct *fsp,
2117                                    const char *fname,
2118                                    TALLOC_CTX *mem_ctx,
2119                                    unsigned int *pnum_streams,
2120                                    struct stream_struct **pstreams)
2121 {
2122         SMB_STRUCT_STAT sbuf;
2123         struct stream_struct *tmp_streams = NULL;
2124         int ret;
2125
2126         if ((fsp != NULL) && (fsp->is_directory)) {
2127                 /*
2128                  * No default streams on directories
2129                  */
2130                 goto done;
2131         }
2132
2133         if ((fsp != NULL) && (fsp->fh->fd != -1)) {
2134                 ret = SMB_VFS_FSTAT(fsp, &sbuf);
2135         }
2136         else {
2137                 struct smb_filename smb_fname;
2138
2139                 ZERO_STRUCT(smb_fname);
2140                 smb_fname.base_name = discard_const_p(char, fname);
2141
2142                 if (lp_posix_pathnames()) {
2143                         ret = SMB_VFS_LSTAT(handle->conn, &smb_fname);
2144                 } else {
2145                         ret = SMB_VFS_STAT(handle->conn, &smb_fname);
2146                 }
2147                 sbuf = smb_fname.st;
2148         }
2149
2150         if (ret == -1) {
2151                 return map_nt_error_from_unix(errno);
2152         }
2153
2154         if (S_ISDIR(sbuf.st_ex_mode)) {
2155                 goto done;
2156         }
2157
2158         tmp_streams = talloc_realloc(mem_ctx, *pstreams, struct stream_struct,
2159                                         (*pnum_streams) + 1);
2160         if (tmp_streams == NULL) {
2161                 return NT_STATUS_NO_MEMORY;
2162         }
2163         tmp_streams[*pnum_streams].name = talloc_strdup(tmp_streams, "::$DATA");
2164         if (tmp_streams[*pnum_streams].name == NULL) {
2165                 return NT_STATUS_NO_MEMORY;
2166         }
2167         tmp_streams[*pnum_streams].size = sbuf.st_ex_size;
2168         tmp_streams[*pnum_streams].alloc_size = SMB_VFS_GET_ALLOC_SIZE(handle->conn, fsp, &sbuf);
2169
2170         *pnum_streams += 1;
2171         *pstreams = tmp_streams;
2172  done:
2173         return NT_STATUS_OK;
2174 }
2175
2176 static int vfswrap_get_real_filename(struct vfs_handle_struct *handle,
2177                                      const char *path,
2178                                      const char *name,
2179                                      TALLOC_CTX *mem_ctx,
2180                                      char **found_name)
2181 {
2182         /*
2183          * Don't fall back to get_real_filename so callers can differentiate
2184          * between a full directory scan and an actual case-insensitive stat.
2185          */
2186         errno = EOPNOTSUPP;
2187         return -1;
2188 }
2189
2190 static const char *vfswrap_connectpath(struct vfs_handle_struct *handle,
2191                                        const char *fname)
2192 {
2193         return handle->conn->connectpath;
2194 }
2195
2196 static NTSTATUS vfswrap_brl_lock_windows(struct vfs_handle_struct *handle,
2197                                          struct byte_range_lock *br_lck,
2198                                          struct lock_struct *plock,
2199                                          bool blocking_lock,
2200                                          struct blocking_lock_record *blr)
2201 {
2202         SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
2203
2204         /* Note: blr is not used in the default implementation. */
2205         return brl_lock_windows_default(br_lck, plock, blocking_lock);
2206 }
2207
2208 static bool vfswrap_brl_unlock_windows(struct vfs_handle_struct *handle,
2209                                        struct messaging_context *msg_ctx,
2210                                        struct byte_range_lock *br_lck,
2211                                        const struct lock_struct *plock)
2212 {
2213         SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
2214
2215         return brl_unlock_windows_default(msg_ctx, br_lck, plock);
2216 }
2217
2218 static bool vfswrap_brl_cancel_windows(struct vfs_handle_struct *handle,
2219                                        struct byte_range_lock *br_lck,
2220                                        struct lock_struct *plock,
2221                                        struct blocking_lock_record *blr)
2222 {
2223         SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
2224
2225         /* Note: blr is not used in the default implementation. */
2226         return brl_lock_cancel_default(br_lck, plock);
2227 }
2228
2229 static bool vfswrap_strict_lock(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         return strict_lock_default(fsp, plock);
2237 }
2238
2239 static void vfswrap_strict_unlock(struct vfs_handle_struct *handle,
2240                                 files_struct *fsp,
2241                                 struct lock_struct *plock)
2242 {
2243         SMB_ASSERT(plock->lock_type == READ_LOCK ||
2244             plock->lock_type == WRITE_LOCK);
2245
2246         strict_unlock_default(fsp, plock);
2247 }
2248
2249 /* NT ACL operations. */
2250
2251 static NTSTATUS vfswrap_fget_nt_acl(vfs_handle_struct *handle,
2252                                     files_struct *fsp,
2253                                     uint32 security_info,
2254                                     TALLOC_CTX *mem_ctx,
2255                                     struct security_descriptor **ppdesc)
2256 {
2257         NTSTATUS result;
2258
2259         START_PROFILE(fget_nt_acl);
2260         result = posix_fget_nt_acl(fsp, security_info,
2261                                    mem_ctx, ppdesc);
2262         END_PROFILE(fget_nt_acl);
2263         return result;
2264 }
2265
2266 static NTSTATUS vfswrap_get_nt_acl(vfs_handle_struct *handle,
2267                                    const char *name,
2268                                    uint32 security_info,
2269                                    TALLOC_CTX *mem_ctx,
2270                                    struct security_descriptor **ppdesc)
2271 {
2272         NTSTATUS result;
2273
2274         START_PROFILE(get_nt_acl);
2275         result = posix_get_nt_acl(handle->conn, name, security_info,
2276                                   mem_ctx, ppdesc);
2277         END_PROFILE(get_nt_acl);
2278         return result;
2279 }
2280
2281 static NTSTATUS vfswrap_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const struct security_descriptor *psd)
2282 {
2283         NTSTATUS result;
2284
2285         START_PROFILE(fset_nt_acl);
2286         result = set_nt_acl(fsp, security_info_sent, psd);
2287         END_PROFILE(fset_nt_acl);
2288         return result;
2289 }
2290
2291 static NTSTATUS vfswrap_audit_file(struct vfs_handle_struct *handle,
2292                                    struct smb_filename *file,
2293                                    struct security_acl *sacl,
2294                                    uint32_t access_requested,
2295                                    uint32_t access_denied)
2296 {
2297         return NT_STATUS_OK; /* Nothing to do here ... */
2298 }
2299
2300 static int vfswrap_chmod_acl(vfs_handle_struct *handle, const char *name, mode_t mode)
2301 {
2302 #ifdef HAVE_NO_ACL
2303         errno = ENOSYS;
2304         return -1;
2305 #else
2306         int result;
2307
2308         START_PROFILE(chmod_acl);
2309         result = chmod_acl(handle->conn, name, mode);
2310         END_PROFILE(chmod_acl);
2311         return result;
2312 #endif
2313 }
2314
2315 static int vfswrap_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
2316 {
2317 #ifdef HAVE_NO_ACL
2318         errno = ENOSYS;
2319         return -1;
2320 #else
2321         int result;
2322
2323         START_PROFILE(fchmod_acl);
2324         result = fchmod_acl(fsp, mode);
2325         END_PROFILE(fchmod_acl);
2326         return result;
2327 #endif
2328 }
2329
2330 static SMB_ACL_T vfswrap_sys_acl_get_file(vfs_handle_struct *handle,
2331                                           const char *path_p,
2332                                           SMB_ACL_TYPE_T type,
2333                                           TALLOC_CTX *mem_ctx)
2334 {
2335         return sys_acl_get_file(handle, path_p, type, mem_ctx);
2336 }
2337
2338 static SMB_ACL_T vfswrap_sys_acl_get_fd(vfs_handle_struct *handle,
2339                                         files_struct *fsp,
2340                                         TALLOC_CTX *mem_ctx)
2341 {
2342         return sys_acl_get_fd(handle, fsp, mem_ctx);
2343 }
2344
2345 static int vfswrap_sys_acl_set_file(vfs_handle_struct *handle, const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl)
2346 {
2347         return sys_acl_set_file(handle, name, acltype, theacl);
2348 }
2349
2350 static int vfswrap_sys_acl_set_fd(vfs_handle_struct *handle, files_struct *fsp, SMB_ACL_T theacl)
2351 {
2352         return sys_acl_set_fd(handle, fsp, theacl);
2353 }
2354
2355 static int vfswrap_sys_acl_delete_def_file(vfs_handle_struct *handle, const char *path)
2356 {
2357         return sys_acl_delete_def_file(handle, path);
2358 }
2359
2360 /****************************************************************
2361  Extended attribute operations.
2362 *****************************************************************/
2363
2364 static ssize_t vfswrap_getxattr(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size)
2365 {
2366         return getxattr(path, name, value, size);
2367 }
2368
2369 static ssize_t vfswrap_fgetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size)
2370 {
2371         return fgetxattr(fsp->fh->fd, name, value, size);
2372 }
2373
2374 static ssize_t vfswrap_listxattr(struct vfs_handle_struct *handle, const char *path, char *list, size_t size)
2375 {
2376         return listxattr(path, list, size);
2377 }
2378
2379 static ssize_t vfswrap_flistxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size)
2380 {
2381         return flistxattr(fsp->fh->fd, list, size);
2382 }
2383
2384 static int vfswrap_removexattr(struct vfs_handle_struct *handle, const char *path, const char *name)
2385 {
2386         return removexattr(path, name);
2387 }
2388
2389 static int vfswrap_fremovexattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name)
2390 {
2391         return fremovexattr(fsp->fh->fd, name);
2392 }
2393
2394 static int vfswrap_setxattr(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags)
2395 {
2396         return setxattr(path, name, value, size, flags);
2397 }
2398
2399 static int vfswrap_fsetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags)
2400 {
2401         return fsetxattr(fsp->fh->fd, name, value, size, flags);
2402 }
2403
2404 static bool vfswrap_aio_force(struct vfs_handle_struct *handle, struct files_struct *fsp)
2405 {
2406         return false;
2407 }
2408
2409 static bool vfswrap_is_offline(struct vfs_handle_struct *handle,
2410                                const struct smb_filename *fname,
2411                                SMB_STRUCT_STAT *sbuf)
2412 {
2413         NTSTATUS status;
2414         char *path;
2415         bool offline = false;
2416
2417         if (ISDOT(fname->base_name) || ISDOTDOT(fname->base_name)) {
2418                 return false;
2419         }
2420
2421         if (!lp_dmapi_support(SNUM(handle->conn)) || !dmapi_have_session()) {
2422 #if defined(ENOTSUP)
2423                 errno = ENOTSUP;
2424 #endif
2425                 return false;
2426         }
2427
2428         status = get_full_smb_filename(talloc_tos(), fname, &path);
2429         if (!NT_STATUS_IS_OK(status)) {
2430                 errno = map_errno_from_nt_status(status);
2431                 return false;
2432         }
2433
2434         offline = (dmapi_file_flags(path) & FILE_ATTRIBUTE_OFFLINE) != 0;
2435
2436         TALLOC_FREE(path);
2437
2438         return offline;
2439 }
2440
2441 static int vfswrap_set_offline(struct vfs_handle_struct *handle,
2442                                const struct smb_filename *fname)
2443 {
2444         /* We don't know how to set offline bit by default, needs to be overriden in the vfs modules */
2445 #if defined(ENOTSUP)
2446         errno = ENOTSUP;
2447 #endif
2448         return -1;
2449 }
2450
2451 static NTSTATUS vfswrap_durable_cookie(struct vfs_handle_struct *handle,
2452                                        struct files_struct *fsp,
2453                                        TALLOC_CTX *mem_ctx,
2454                                        DATA_BLOB *cookie)
2455 {
2456         return vfs_default_durable_cookie(fsp, mem_ctx, cookie);
2457 }
2458
2459 static NTSTATUS vfswrap_durable_disconnect(struct vfs_handle_struct *handle,
2460                                            struct files_struct *fsp,
2461                                            const DATA_BLOB old_cookie,
2462                                            TALLOC_CTX *mem_ctx,
2463                                            DATA_BLOB *new_cookie)
2464 {
2465         return vfs_default_durable_disconnect(fsp, old_cookie, mem_ctx,
2466                                               new_cookie);
2467 }
2468
2469 static NTSTATUS vfswrap_durable_reconnect(struct vfs_handle_struct *handle,
2470                                           struct smb_request *smb1req,
2471                                           struct smbXsrv_open *op,
2472                                           const DATA_BLOB old_cookie,
2473                                           TALLOC_CTX *mem_ctx,
2474                                           struct files_struct **fsp,
2475                                           DATA_BLOB *new_cookie)
2476 {
2477         return vfs_default_durable_reconnect(handle->conn, smb1req, op,
2478                                              old_cookie, mem_ctx,
2479                                              fsp, new_cookie);
2480 }
2481
2482 static struct vfs_fn_pointers vfs_default_fns = {
2483         /* Disk operations */
2484
2485         .connect_fn = vfswrap_connect,
2486         .disconnect_fn = vfswrap_disconnect,
2487         .disk_free_fn = vfswrap_disk_free,
2488         .get_quota_fn = vfswrap_get_quota,
2489         .set_quota_fn = vfswrap_set_quota,
2490         .get_shadow_copy_data_fn = vfswrap_get_shadow_copy_data,
2491         .statvfs_fn = vfswrap_statvfs,
2492         .fs_capabilities_fn = vfswrap_fs_capabilities,
2493         .get_dfs_referrals_fn = vfswrap_get_dfs_referrals,
2494
2495         /* Directory operations */
2496
2497         .opendir_fn = vfswrap_opendir,
2498         .fdopendir_fn = vfswrap_fdopendir,
2499         .readdir_fn = vfswrap_readdir,
2500         .seekdir_fn = vfswrap_seekdir,
2501         .telldir_fn = vfswrap_telldir,
2502         .rewind_dir_fn = vfswrap_rewinddir,
2503         .mkdir_fn = vfswrap_mkdir,
2504         .rmdir_fn = vfswrap_rmdir,
2505         .closedir_fn = vfswrap_closedir,
2506         .init_search_op_fn = vfswrap_init_search_op,
2507
2508         /* File operations */
2509
2510         .open_fn = vfswrap_open,
2511         .create_file_fn = vfswrap_create_file,
2512         .close_fn = vfswrap_close,
2513         .read_fn = vfswrap_read,
2514         .pread_fn = vfswrap_pread,
2515         .pread_send_fn = vfswrap_pread_send,
2516         .pread_recv_fn = vfswrap_asys_ssize_t_recv,
2517         .write_fn = vfswrap_write,
2518         .pwrite_fn = vfswrap_pwrite,
2519         .pwrite_send_fn = vfswrap_pwrite_send,
2520         .pwrite_recv_fn = vfswrap_asys_ssize_t_recv,
2521         .lseek_fn = vfswrap_lseek,
2522         .sendfile_fn = vfswrap_sendfile,
2523         .recvfile_fn = vfswrap_recvfile,
2524         .rename_fn = vfswrap_rename,
2525         .fsync_fn = vfswrap_fsync,
2526         .fsync_send_fn = vfswrap_fsync_send,
2527         .fsync_recv_fn = vfswrap_asys_int_recv,
2528         .stat_fn = vfswrap_stat,
2529         .fstat_fn = vfswrap_fstat,
2530         .lstat_fn = vfswrap_lstat,
2531         .get_alloc_size_fn = vfswrap_get_alloc_size,
2532         .unlink_fn = vfswrap_unlink,
2533         .chmod_fn = vfswrap_chmod,
2534         .fchmod_fn = vfswrap_fchmod,
2535         .chown_fn = vfswrap_chown,
2536         .fchown_fn = vfswrap_fchown,
2537         .lchown_fn = vfswrap_lchown,
2538         .chdir_fn = vfswrap_chdir,
2539         .getwd_fn = vfswrap_getwd,
2540         .ntimes_fn = vfswrap_ntimes,
2541         .ftruncate_fn = vfswrap_ftruncate,
2542         .fallocate_fn = vfswrap_fallocate,
2543         .lock_fn = vfswrap_lock,
2544         .kernel_flock_fn = vfswrap_kernel_flock,
2545         .linux_setlease_fn = vfswrap_linux_setlease,
2546         .getlock_fn = vfswrap_getlock,
2547         .symlink_fn = vfswrap_symlink,
2548         .readlink_fn = vfswrap_readlink,
2549         .link_fn = vfswrap_link,
2550         .mknod_fn = vfswrap_mknod,
2551         .realpath_fn = vfswrap_realpath,
2552         .notify_watch_fn = vfswrap_notify_watch,
2553         .chflags_fn = vfswrap_chflags,
2554         .file_id_create_fn = vfswrap_file_id_create,
2555         .streaminfo_fn = vfswrap_streaminfo,
2556         .get_real_filename_fn = vfswrap_get_real_filename,
2557         .connectpath_fn = vfswrap_connectpath,
2558         .brl_lock_windows_fn = vfswrap_brl_lock_windows,
2559         .brl_unlock_windows_fn = vfswrap_brl_unlock_windows,
2560         .brl_cancel_windows_fn = vfswrap_brl_cancel_windows,
2561         .strict_lock_fn = vfswrap_strict_lock,
2562         .strict_unlock_fn = vfswrap_strict_unlock,
2563         .translate_name_fn = vfswrap_translate_name,
2564         .fsctl_fn = vfswrap_fsctl,
2565         .copy_chunk_send_fn = vfswrap_copy_chunk_send,
2566         .copy_chunk_recv_fn = vfswrap_copy_chunk_recv,
2567         .get_compression_fn = vfswrap_get_compression,
2568         .set_compression_fn = vfswrap_set_compression,
2569
2570         /* NT ACL operations. */
2571
2572         .fget_nt_acl_fn = vfswrap_fget_nt_acl,
2573         .get_nt_acl_fn = vfswrap_get_nt_acl,
2574         .fset_nt_acl_fn = vfswrap_fset_nt_acl,
2575         .audit_file_fn = vfswrap_audit_file,
2576
2577         /* POSIX ACL operations. */
2578
2579         .chmod_acl_fn = vfswrap_chmod_acl,
2580         .fchmod_acl_fn = vfswrap_fchmod_acl,
2581
2582         .sys_acl_get_file_fn = vfswrap_sys_acl_get_file,
2583         .sys_acl_get_fd_fn = vfswrap_sys_acl_get_fd,
2584         .sys_acl_blob_get_file_fn = posix_sys_acl_blob_get_file,
2585         .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
2586         .sys_acl_set_file_fn = vfswrap_sys_acl_set_file,
2587         .sys_acl_set_fd_fn = vfswrap_sys_acl_set_fd,
2588         .sys_acl_delete_def_file_fn = vfswrap_sys_acl_delete_def_file,
2589
2590         /* EA operations. */
2591         .getxattr_fn = vfswrap_getxattr,
2592         .fgetxattr_fn = vfswrap_fgetxattr,
2593         .listxattr_fn = vfswrap_listxattr,
2594         .flistxattr_fn = vfswrap_flistxattr,
2595         .removexattr_fn = vfswrap_removexattr,
2596         .fremovexattr_fn = vfswrap_fremovexattr,
2597         .setxattr_fn = vfswrap_setxattr,
2598         .fsetxattr_fn = vfswrap_fsetxattr,
2599
2600         /* aio operations */
2601         .aio_force_fn = vfswrap_aio_force,
2602
2603         /* offline operations */
2604         .is_offline_fn = vfswrap_is_offline,
2605         .set_offline_fn = vfswrap_set_offline,
2606
2607         /* durable handle operations */
2608         .durable_cookie_fn = vfswrap_durable_cookie,
2609         .durable_disconnect_fn = vfswrap_durable_disconnect,
2610         .durable_reconnect_fn = vfswrap_durable_reconnect,
2611 };
2612
2613 NTSTATUS vfs_default_init(void);
2614 NTSTATUS vfs_default_init(void)
2615 {
2616         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
2617                                 DEFAULT_VFS_MODULE_NAME, &vfs_default_fns);
2618 }
2619
2620