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/util/tevent_ntstatus.h"
  34 #include "lib/util/sys_rw.h"
  35 #include "lib/pthreadpool/pthreadpool_tevent.h"
  36 #include "librpc/gen_ndr/ndr_ioctl.h"
  37 #include "offload_token.h"
  38
  39 #undef DBGC_CLASS
  40 #define DBGC_CLASS DBGC_VFS
  41
  42 /* Check for NULL pointer parameters in vfswrap_* functions */
  43
  44 /* We don't want to have NULL function pointers lying around.  Someone
  45    is sure to try and execute them.  These stubs are used to prevent
  46    this possibility. */
  47
  48 static int vfswrap_connect(vfs_handle_struct *handle, const char *service, const char *user)
  49 {
  50     return 0;    /* Return >= 0 for success */
  51 }
  52
  53 static void vfswrap_disconnect(vfs_handle_struct *handle)
  54 {
  55 }
  56
  57 /* Disk operations */
  58
  59 static uint64_t vfswrap_disk_free(vfs_handle_struct *handle,
  60                                 const struct smb_filename *smb_fname,
  61                                 uint64_t *bsize,
  62                                 uint64_t *dfree,
  63                                 uint64_t *dsize)
  64 {
  65         if (sys_fsusage(smb_fname->base_name, dfree, dsize) != 0) {
  66                 return (uint64_t)-1;
  67         }
  68
  69         *bsize = 512;
  70         return *dfree / 2;
  71 }
  72
  73 static int vfswrap_get_quota(struct vfs_handle_struct *handle,
  74                                 const struct smb_filename *smb_fname,
  75                                 enum SMB_QUOTA_TYPE qtype,
  76                                 unid_t id,
  77                                 SMB_DISK_QUOTA *qt)
  78 {
  79 #ifdef HAVE_SYS_QUOTAS
  80         int result;
  81
  82         START_PROFILE(syscall_get_quota);
  83         result = sys_get_quota(smb_fname->base_name, qtype, id, qt);
  84         END_PROFILE(syscall_get_quota);
  85         return result;
  86 #else
  87         errno = ENOSYS;
  88         return -1;
  89 #endif
  90 }
  91
  92 static int vfswrap_set_quota(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
  93 {
  94 #ifdef HAVE_SYS_QUOTAS
  95         int result;
  96
  97         START_PROFILE(syscall_set_quota);
  98         result = sys_set_quota(handle->conn->connectpath, qtype, id, qt);
  99         END_PROFILE(syscall_set_quota);
 100         return result;
 101 #else
 102         errno = ENOSYS;
 103         return -1;
 104 #endif
 105 }
 106
 107 static int vfswrap_get_shadow_copy_data(struct vfs_handle_struct *handle,
 108                                         struct files_struct *fsp,
 109                                         struct shadow_copy_data *shadow_copy_data,
 110                                         bool labels)
 111 {
 112         errno = ENOSYS;
 113         return -1;  /* Not implemented. */
 114 }
 115
 116 static int vfswrap_statvfs(struct vfs_handle_struct *handle,
 117                                 const struct smb_filename *smb_fname,
 118                                 vfs_statvfs_struct *statbuf)
 119 {
 120         return sys_statvfs(smb_fname->base_name, statbuf);
 121 }
 122
 123 static uint32_t vfswrap_fs_capabilities(struct vfs_handle_struct *handle,
 124                 enum timestamp_set_resolution *p_ts_res)
 125 {
 126         connection_struct *conn = handle->conn;
 127         uint32_t caps = FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
 128         struct smb_filename *smb_fname_cpath = NULL;
 129         struct vfs_statvfs_struct statbuf;
 130         int ret;
 131
 132         smb_fname_cpath = synthetic_smb_fname(talloc_tos(), conn->connectpath,
 133                                               NULL, NULL, 0);
 134         if (smb_fname_cpath == NULL) {
 135                 return caps;
 136         }
 137
 138         ZERO_STRUCT(statbuf);
 139         ret = SMB_VFS_STATVFS(conn, smb_fname_cpath, &statbuf);
 140         if (ret == 0) {
 141                 caps = statbuf.FsCapabilities;
 142         }
 143
 144         *p_ts_res = TIMESTAMP_SET_SECONDS;
 145
 146         /* Work out what timestamp resolution we can
 147          * use when setting a timestamp. */
 148
 149         ret = SMB_VFS_STAT(conn, smb_fname_cpath);
 150         if (ret == -1) {
 151                 TALLOC_FREE(smb_fname_cpath);
 152                 return caps;
 153         }
 154
 155         if (smb_fname_cpath->st.st_ex_mtime.tv_nsec ||
 156                         smb_fname_cpath->st.st_ex_atime.tv_nsec ||
 157                         smb_fname_cpath->st.st_ex_ctime.tv_nsec) {
 158                 /* If any of the normal UNIX directory timestamps
 159                  * have a non-zero tv_nsec component assume
 160                  * we might be able to set sub-second timestamps.
 161                  * See what filetime set primitives we have.
 162                  */
 163 #if defined(HAVE_UTIMENSAT)
 164                 *p_ts_res = TIMESTAMP_SET_NT_OR_BETTER;
 165 #elif defined(HAVE_UTIMES)
 166                 /* utimes allows msec timestamps to be set. */
 167                 *p_ts_res = TIMESTAMP_SET_MSEC;
 168 #elif defined(HAVE_UTIME)
 169                 /* utime only allows sec timestamps to be set. */
 170                 *p_ts_res = TIMESTAMP_SET_SECONDS;
 171 #endif
 172
 173                 DEBUG(10,("vfswrap_fs_capabilities: timestamp "
 174                         "resolution of %s "
 175                         "available on share %s, directory %s\n",
 176                         *p_ts_res == TIMESTAMP_SET_MSEC ? "msec" : "sec",
 177                         lp_servicename(talloc_tos(), conn->params->service),
 178                         conn->connectpath ));
 179         }
 180         TALLOC_FREE(smb_fname_cpath);
 181         return caps;
 182 }
 183
 184 static NTSTATUS vfswrap_get_dfs_referrals(struct vfs_handle_struct *handle,
 185                                           struct dfs_GetDFSReferral *r)
 186 {
 187         struct junction_map *junction = NULL;
 188         int consumedcnt = 0;
 189         bool self_referral = false;
 190         char *pathnamep = NULL;
 191         char *local_dfs_path = NULL;
 192         NTSTATUS status;
 193         int i;
 194         uint16_t max_referral_level = r->in.req.max_referral_level;
 195
 196         if (DEBUGLVL(10)) {
 197                 NDR_PRINT_IN_DEBUG(dfs_GetDFSReferral, r);
 198         }
 199
 200         /* get the junction entry */
 201         if (r->in.req.servername == NULL) {
 202                 return NT_STATUS_NOT_FOUND;
 203         }
 204
 205         /*
 206          * Trim pathname sent by client so it begins with only one backslash.
 207          * Two backslashes confuse some dfs clients
 208          */
 209
 210         local_dfs_path = talloc_strdup(r, r->in.req.servername);
 211         if (local_dfs_path == NULL) {
 212                 return NT_STATUS_NO_MEMORY;
 213         }
 214         pathnamep = local_dfs_path;
 215         while (IS_DIRECTORY_SEP(pathnamep[0]) &&
 216                IS_DIRECTORY_SEP(pathnamep[1])) {
 217                 pathnamep++;
 218         }
 219
 220         junction = talloc_zero(r, struct junction_map);
 221         if (junction == NULL) {
 222                 return NT_STATUS_NO_MEMORY;
 223         }
 224
 225         /* The following call can change cwd. */
 226         status = get_referred_path(r, pathnamep,
 227                                    handle->conn->sconn->remote_address,
 228                                    handle->conn->sconn->local_address,
 229                                    !handle->conn->sconn->using_smb2,
 230                                    junction, &consumedcnt, &self_referral);
 231         if (!NT_STATUS_IS_OK(status)) {
 232                 struct smb_filename connectpath_fname = {
 233                         .base_name = handle->conn->connectpath
 234                 };
 235                 vfs_ChDir(handle->conn, &connectpath_fname);
 236                 return status;
 237         }
 238         {
 239                 struct smb_filename connectpath_fname = {
 240                         .base_name = handle->conn->connectpath
 241                 };
 242                 vfs_ChDir(handle->conn, &connectpath_fname);
 243         }
 244
 245         if (!self_referral) {
 246                 pathnamep[consumedcnt] = '\0';
 247
 248                 if (DEBUGLVL(3)) {
 249                         dbgtext("Path %s to alternate path(s):",
 250                                 pathnamep);
 251                         for (i=0; i < junction->referral_count; i++) {
 252                                 dbgtext(" %s",
 253                                 junction->referral_list[i].alternate_path);
 254                         }
 255                         dbgtext(".\n");
 256                 }
 257         }
 258
 259         if (r->in.req.max_referral_level <= 2) {
 260                 max_referral_level = 2;
 261         }
 262         if (r->in.req.max_referral_level >= 3) {
 263                 max_referral_level = 3;
 264         }
 265
 266         r->out.resp = talloc_zero(r, struct dfs_referral_resp);
 267         if (r->out.resp == NULL) {
 268                 return NT_STATUS_NO_MEMORY;
 269         }
 270
 271         r->out.resp->path_consumed = strlen_m(pathnamep) * 2;
 272         r->out.resp->nb_referrals = junction->referral_count;
 273
 274         r->out.resp->header_flags = DFS_HEADER_FLAG_STORAGE_SVR;
 275         if (self_referral) {
 276                 r->out.resp->header_flags |= DFS_HEADER_FLAG_REFERAL_SVR;
 277         }
 278
 279         r->out.resp->referral_entries = talloc_zero_array(r,
 280                                 struct dfs_referral_type,
 281                                 r->out.resp->nb_referrals);
 282         if (r->out.resp->referral_entries == NULL) {
 283                 return NT_STATUS_NO_MEMORY;
 284         }
 285
 286         switch (max_referral_level) {
 287         case 2:
 288                 for(i=0; i < junction->referral_count; i++) {
 289                         struct referral *ref = &junction->referral_list[i];
 290                         TALLOC_CTX *mem_ctx = r->out.resp->referral_entries;
 291                         struct dfs_referral_type *t =
 292                                 &r->out.resp->referral_entries[i];
 293                         struct dfs_referral_v2 *v2 = &t->referral.v2;
 294
 295                         t->version = 2;
 296                         v2->size = VERSION2_REFERRAL_SIZE;
 297                         if (self_referral) {
 298                                 v2->server_type = DFS_SERVER_ROOT;
 299                         } else {
 300                                 v2->server_type = DFS_SERVER_NON_ROOT;
 301                         }
 302                         v2->entry_flags = 0;
 303                         v2->proximity = ref->proximity;
 304                         v2->ttl = ref->ttl;
 305                         v2->DFS_path = talloc_strdup(mem_ctx, pathnamep);
 306                         if (v2->DFS_path == NULL) {
 307                                 return NT_STATUS_NO_MEMORY;
 308                         }
 309                         v2->DFS_alt_path = talloc_strdup(mem_ctx, pathnamep);
 310                         if (v2->DFS_alt_path == NULL) {
 311                                 return NT_STATUS_NO_MEMORY;
 312                         }
 313                         v2->netw_address = talloc_strdup(mem_ctx,
 314                                                          ref->alternate_path);
 315                         if (v2->netw_address == NULL) {
 316                                 return NT_STATUS_NO_MEMORY;
 317                         }
 318                 }
 319
 320                 break;
 321         case 3:
 322                 for(i=0; i < junction->referral_count; i++) {
 323                         struct referral *ref = &junction->referral_list[i];
 324                         TALLOC_CTX *mem_ctx = r->out.resp->referral_entries;
 325                         struct dfs_referral_type *t =
 326                                 &r->out.resp->referral_entries[i];
 327                         struct dfs_referral_v3 *v3 = &t->referral.v3;
 328                         struct dfs_normal_referral *r1 = &v3->referrals.r1;
 329
 330                         t->version = 3;
 331                         v3->size = VERSION3_REFERRAL_SIZE;
 332                         if (self_referral) {
 333                                 v3->server_type = DFS_SERVER_ROOT;
 334                         } else {
 335                                 v3->server_type = DFS_SERVER_NON_ROOT;
 336                         }
 337                         v3->entry_flags = 0;
 338                         v3->ttl = ref->ttl;
 339                         r1->DFS_path = talloc_strdup(mem_ctx, pathnamep);
 340                         if (r1->DFS_path == NULL) {
 341                                 return NT_STATUS_NO_MEMORY;
 342                         }
 343                         r1->DFS_alt_path = talloc_strdup(mem_ctx, pathnamep);
 344                         if (r1->DFS_alt_path == NULL) {
 345                                 return NT_STATUS_NO_MEMORY;
 346                         }
 347                         r1->netw_address = talloc_strdup(mem_ctx,
 348                                                          ref->alternate_path);
 349                         if (r1->netw_address == NULL) {
 350                                 return NT_STATUS_NO_MEMORY;
 351                         }
 352                 }
 353                 break;
 354         default:
 355                 DEBUG(0,("Invalid dfs referral version: %d\n",
 356                         max_referral_level));
 357                 return NT_STATUS_INVALID_LEVEL;
 358         }
 359
 360         if (DEBUGLVL(10)) {
 361                 NDR_PRINT_OUT_DEBUG(dfs_GetDFSReferral, r);
 362         }
 363
 364         return NT_STATUS_OK;
 365 }
 366
 367 static NTSTATUS vfswrap_snap_check_path(struct vfs_handle_struct *handle,
 368                                         TALLOC_CTX *mem_ctx,
 369                                         const char *service_path,
 370                                         char **base_volume)
 371 {
 372         return NT_STATUS_NOT_SUPPORTED;
 373 }
 374
 375 static NTSTATUS vfswrap_snap_create(struct vfs_handle_struct *handle,
 376                                     TALLOC_CTX *mem_ctx,
 377                                     const char *base_volume,
 378                                     time_t *tstamp,
 379                                     bool rw,
 380                                     char **base_path,
 381                                     char **snap_path)
 382 {
 383         return NT_STATUS_NOT_SUPPORTED;
 384 }
 385
 386 static NTSTATUS vfswrap_snap_delete(struct vfs_handle_struct *handle,
 387                                     TALLOC_CTX *mem_ctx,
 388                                     char *base_path,
 389                                     char *snap_path)
 390 {
 391         return NT_STATUS_NOT_SUPPORTED;
 392 }
 393
 394 /* Directory operations */
 395
 396 static DIR *vfswrap_opendir(vfs_handle_struct *handle,
 397                                 const struct smb_filename *smb_fname,
 398                                 const char *mask,
 399                                 uint32_t attr)
 400 {
 401         DIR *result;
 402
 403         START_PROFILE(syscall_opendir);
 404         result = opendir(smb_fname->base_name);
 405         END_PROFILE(syscall_opendir);
 406         return result;
 407 }
 408
 409 static DIR *vfswrap_fdopendir(vfs_handle_struct *handle,
 410                         files_struct *fsp,
 411                         const char *mask,
 412                         uint32_t attr)
 413 {
 414         DIR *result;
 415
 416         START_PROFILE(syscall_fdopendir);
 417         result = sys_fdopendir(fsp->fh->fd);
 418         END_PROFILE(syscall_fdopendir);
 419         return result;
 420 }
 421
 422
 423 static struct dirent *vfswrap_readdir(vfs_handle_struct *handle,
 424                                           DIR *dirp,
 425                                           SMB_STRUCT_STAT *sbuf)
 426 {
 427         struct dirent *result;
 428
 429         START_PROFILE(syscall_readdir);
 430         result = readdir(dirp);
 431         END_PROFILE(syscall_readdir);
 432         if (sbuf) {
 433                 /* Default Posix readdir() does not give us stat info.
 434                  * Set to invalid to indicate we didn't return this info. */
 435                 SET_STAT_INVALID(*sbuf);
 436 #if defined(HAVE_DIRFD) && defined(HAVE_FSTATAT)
 437                 if (result != NULL) {
 438                         /* See if we can efficiently return this. */
 439                         struct stat st;
 440                         int flags = AT_SYMLINK_NOFOLLOW;
 441                         int ret = fstatat(dirfd(dirp),
 442                                         result->d_name,
 443                                         &st,
 444                                         flags);
 445                         /*
 446                          * As this is an optimization,
 447                          * ignore it if we stat'ed a
 448                          * symlink. Make the caller
 449                          * do it again as we don't
 450                          * know if they wanted the link
 451                          * info, or its target info.
 452                          */
 453                         if ((ret == 0) && (!S_ISLNK(st.st_mode))) {
 454                                 init_stat_ex_from_stat(sbuf,
 455                                         &st,
 456                                         lp_fake_directory_create_times(
 457                                                 SNUM(handle->conn)));
 458                         }
 459                 }
 460 #endif
 461         }
 462         return result;
 463 }
 464
 465 static NTSTATUS vfswrap_readdir_attr(struct vfs_handle_struct *handle,
 466                                      const struct smb_filename *fname,
 467                                      TALLOC_CTX *mem_ctx,
 468                                      struct readdir_attr_data **attr_data)
 469 {
 470         return NT_STATUS_NOT_SUPPORTED;
 471 }
 472
 473 static void vfswrap_seekdir(vfs_handle_struct *handle, DIR *dirp, long offset)
 474 {
 475         START_PROFILE(syscall_seekdir);
 476         seekdir(dirp, offset);
 477         END_PROFILE(syscall_seekdir);
 478 }
 479
 480 static long vfswrap_telldir(vfs_handle_struct *handle, DIR *dirp)
 481 {
 482         long result;
 483         START_PROFILE(syscall_telldir);
 484         result = telldir(dirp);
 485         END_PROFILE(syscall_telldir);
 486         return result;
 487 }
 488
 489 static void vfswrap_rewinddir(vfs_handle_struct *handle, DIR *dirp)
 490 {
 491         START_PROFILE(syscall_rewinddir);
 492         rewinddir(dirp);
 493         END_PROFILE(syscall_rewinddir);
 494 }
 495
 496 static int vfswrap_mkdir(vfs_handle_struct *handle,
 497                         const struct smb_filename *smb_fname,
 498                         mode_t mode)
 499 {
 500         int result;
 501         const char *path = smb_fname->base_name;
 502         char *parent = NULL;
 503
 504         START_PROFILE(syscall_mkdir);
 505
 506         if (lp_inherit_acls(SNUM(handle->conn))
 507             && parent_dirname(talloc_tos(), path, &parent, NULL)
 508             && directory_has_default_acl(handle->conn, parent)) {
 509                 mode = (0777 & lp_directory_mask(SNUM(handle->conn)));
 510         }
 511
 512         TALLOC_FREE(parent);
 513
 514         result = mkdir(path, mode);
 515
 516         END_PROFILE(syscall_mkdir);
 517         return result;
 518 }
 519
 520 static int vfswrap_rmdir(vfs_handle_struct *handle,
 521                         const struct smb_filename *smb_fname)
 522 {
 523         int result;
 524
 525         START_PROFILE(syscall_rmdir);
 526         result = rmdir(smb_fname->base_name);
 527         END_PROFILE(syscall_rmdir);
 528         return result;
 529 }
 530
 531 static int vfswrap_closedir(vfs_handle_struct *handle, DIR *dirp)
 532 {
 533         int result;
 534
 535         START_PROFILE(syscall_closedir);
 536         result = closedir(dirp);
 537         END_PROFILE(syscall_closedir);
 538         return result;
 539 }
 540
 541 /* File operations */
 542
 543 static int vfswrap_open(vfs_handle_struct *handle,
 544                         struct smb_filename *smb_fname,
 545                         files_struct *fsp, int flags, mode_t mode)
 546 {
 547         int result = -1;
 548
 549         START_PROFILE(syscall_open);
 550
 551         if (smb_fname->stream_name) {
 552                 errno = ENOENT;
 553                 goto out;
 554         }
 555
 556         result = open(smb_fname->base_name, flags, mode);
 557  out:
 558         END_PROFILE(syscall_open);
 559         return result;
 560 }
 561
 562 static NTSTATUS vfswrap_create_file(vfs_handle_struct *handle,
 563                                     struct smb_request *req,
 564                                     uint16_t root_dir_fid,
 565                                     struct smb_filename *smb_fname,
 566                                     uint32_t access_mask,
 567                                     uint32_t share_access,
 568                                     uint32_t create_disposition,
 569                                     uint32_t create_options,
 570                                     uint32_t file_attributes,
 571                                     uint32_t oplock_request,
 572                                     struct smb2_lease *lease,
 573                                     uint64_t allocation_size,
 574                                     uint32_t private_flags,
 575                                     struct security_descriptor *sd,
 576                                     struct ea_list *ea_list,
 577                                     files_struct **result,
 578                                     int *pinfo,
 579                                     const struct smb2_create_blobs *in_context_blobs,
 580                                     struct smb2_create_blobs *out_context_blobs)
 581 {
 582         return create_file_default(handle->conn, req, root_dir_fid, smb_fname,
 583                                    access_mask, share_access,
 584                                    create_disposition, create_options,
 585                                    file_attributes, oplock_request, lease,
 586                                    allocation_size, private_flags,
 587                                    sd, ea_list, result,
 588                                    pinfo, in_context_blobs, out_context_blobs);
 589 }
 590
 591 static int vfswrap_close(vfs_handle_struct *handle, files_struct *fsp)
 592 {
 593         int result;
 594
 595         START_PROFILE(syscall_close);
 596         result = fd_close_posix(fsp);
 597         END_PROFILE(syscall_close);
 598         return result;
 599 }
 600
 601 static ssize_t vfswrap_pread(vfs_handle_struct *handle, files_struct *fsp, void *data,
 602                         size_t n, off_t offset)
 603 {
 604         ssize_t result;
 605
 606 #if defined(HAVE_PREAD) || defined(HAVE_PREAD64)
 607         START_PROFILE_BYTES(syscall_pread, n);
 608         result = sys_pread(fsp->fh->fd, data, n, offset);
 609         END_PROFILE_BYTES(syscall_pread);
 610
 611         if (result == -1 && errno == ESPIPE) {
 612                 /* Maintain the fiction that pipes can be seeked (sought?) on. */
 613                 result = sys_read(fsp->fh->fd, data, n);
 614                 fsp->fh->pos = 0;
 615         }
 616
 617 #else /* HAVE_PREAD */
 618         errno = ENOSYS;
 619         result = -1;
 620 #endif /* HAVE_PREAD */
 621
 622         return result;
 623 }
 624
 625 static ssize_t vfswrap_pwrite(vfs_handle_struct *handle, files_struct *fsp, const void *data,
 626                         size_t n, off_t offset)
 627 {
 628         ssize_t result;
 629
 630 #if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
 631         START_PROFILE_BYTES(syscall_pwrite, n);
 632         result = sys_pwrite(fsp->fh->fd, data, n, offset);
 633         END_PROFILE_BYTES(syscall_pwrite);
 634
 635         if (result == -1 && errno == ESPIPE) {
 636                 /* Maintain the fiction that pipes can be sought on. */
 637                 result = sys_write(fsp->fh->fd, data, n);
 638         }
 639
 640 #else /* HAVE_PWRITE */
 641         errno = ENOSYS;
 642         result = -1;
 643 #endif /* HAVE_PWRITE */
 644
 645         return result;
 646 }
 647
 648 struct vfswrap_pread_state {
 649         ssize_t ret;
 650         int fd;
 651         void *buf;
 652         size_t count;
 653         off_t offset;
 654
 655         struct vfs_aio_state vfs_aio_state;
 656         SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
 657 };
 658
 659 static void vfs_pread_do(void *private_data);
 660 static void vfs_pread_done(struct tevent_req *subreq);
 661 static int vfs_pread_state_destructor(struct vfswrap_pread_state *state);
 662
 663 static struct tevent_req *vfswrap_pread_send(struct vfs_handle_struct *handle,
 664                                              TALLOC_CTX *mem_ctx,
 665                                              struct tevent_context *ev,
 666                                              struct files_struct *fsp,
 667                                              void *data,
 668                                              size_t n, off_t offset)
 669 {
 670         struct tevent_req *req, *subreq;
 671         struct vfswrap_pread_state *state;
 672
 673         req = tevent_req_create(mem_ctx, &state, struct vfswrap_pread_state);
 674         if (req == NULL) {
 675                 return NULL;
 676         }
 677
 678         state->ret = -1;
 679         state->fd = fsp->fh->fd;
 680         state->buf = data;
 681         state->count = n;
 682         state->offset = offset;
 683
 684         SMBPROFILE_BYTES_ASYNC_START(syscall_asys_pread, profile_p,
 685                                      state->profile_bytes, n);
 686         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
 687
 688         subreq = pthreadpool_tevent_job_send(
 689                 state, ev, handle->conn->sconn->pool,
 690                 vfs_pread_do, state);
 691         if (tevent_req_nomem(subreq, req)) {
 692                 return tevent_req_post(req, ev);
 693         }
 694         tevent_req_set_callback(subreq, vfs_pread_done, req);
 695
 696         talloc_set_destructor(state, vfs_pread_state_destructor);
 697
 698         return req;
 699 }
 700
 701 static void vfs_pread_do(void *private_data)
 702 {
 703         struct vfswrap_pread_state *state = talloc_get_type_abort(
 704                 private_data, struct vfswrap_pread_state);
 705         struct timespec start_time;
 706         struct timespec end_time;
 707
 708         SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
 709
 710         PROFILE_TIMESTAMP(&start_time);
 711
 712         do {
 713                 state->ret = pread(state->fd, state->buf, state->count,
 714                                    state->offset);
 715         } while ((state->ret == -1) && (errno == EINTR));
 716
 717         if (state->ret == -1) {
 718                 state->vfs_aio_state.error = errno;
 719         }
 720
 721         PROFILE_TIMESTAMP(&end_time);
 722
 723         state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
 724
 725         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
 726 }
 727
 728 static int vfs_pread_state_destructor(struct vfswrap_pread_state *state)
 729 {
 730         return -1;
 731 }
 732
 733 static void vfs_pread_done(struct tevent_req *subreq)
 734 {
 735         struct tevent_req *req = tevent_req_callback_data(
 736                 subreq, struct tevent_req);
 737         struct vfswrap_pread_state *state = tevent_req_data(
 738                 req, struct vfswrap_pread_state);
 739         int ret;
 740
 741         ret = pthreadpool_tevent_job_recv(subreq);
 742         TALLOC_FREE(subreq);
 743         SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
 744         talloc_set_destructor(state, NULL);
 745         if (tevent_req_error(req, ret)) {
 746                 return;
 747         }
 748
 749         tevent_req_done(req);
 750 }
 751
 752 static ssize_t vfswrap_pread_recv(struct tevent_req *req,
 753                                   struct vfs_aio_state *vfs_aio_state)
 754 {
 755         struct vfswrap_pread_state *state = tevent_req_data(
 756                 req, struct vfswrap_pread_state);
 757
 758         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
 759                 return -1;
 760         }
 761
 762         *vfs_aio_state = state->vfs_aio_state;
 763         return state->ret;
 764 }
 765
 766 struct vfswrap_pwrite_state {
 767         ssize_t ret;
 768         int fd;
 769         const void *buf;
 770         size_t count;
 771         off_t offset;
 772
 773         struct vfs_aio_state vfs_aio_state;
 774         SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
 775 };
 776
 777 static void vfs_pwrite_do(void *private_data);
 778 static void vfs_pwrite_done(struct tevent_req *subreq);
 779 static int vfs_pwrite_state_destructor(struct vfswrap_pwrite_state *state);
 780
 781 static struct tevent_req *vfswrap_pwrite_send(struct vfs_handle_struct *handle,
 782                                               TALLOC_CTX *mem_ctx,
 783                                               struct tevent_context *ev,
 784                                               struct files_struct *fsp,
 785                                               const void *data,
 786                                               size_t n, off_t offset)
 787 {
 788         struct tevent_req *req, *subreq;
 789         struct vfswrap_pwrite_state *state;
 790
 791         req = tevent_req_create(mem_ctx, &state, struct vfswrap_pwrite_state);
 792         if (req == NULL) {
 793                 return NULL;
 794         }
 795
 796         state->ret = -1;
 797         state->fd = fsp->fh->fd;
 798         state->buf = data;
 799         state->count = n;
 800         state->offset = offset;
 801
 802         SMBPROFILE_BYTES_ASYNC_START(syscall_asys_pwrite, profile_p,
 803                                      state->profile_bytes, n);
 804         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
 805
 806         subreq = pthreadpool_tevent_job_send(
 807                 state, ev, handle->conn->sconn->pool,
 808                 vfs_pwrite_do, state);
 809         if (tevent_req_nomem(subreq, req)) {
 810                 return tevent_req_post(req, ev);
 811         }
 812         tevent_req_set_callback(subreq, vfs_pwrite_done, req);
 813
 814         talloc_set_destructor(state, vfs_pwrite_state_destructor);
 815
 816         return req;
 817 }
 818
 819 static void vfs_pwrite_do(void *private_data)
 820 {
 821         struct vfswrap_pwrite_state *state = talloc_get_type_abort(
 822                 private_data, struct vfswrap_pwrite_state);
 823         struct timespec start_time;
 824         struct timespec end_time;
 825
 826         SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
 827
 828         PROFILE_TIMESTAMP(&start_time);
 829
 830         do {
 831                 state->ret = pwrite(state->fd, state->buf, state->count,
 832                                    state->offset);
 833         } while ((state->ret == -1) && (errno == EINTR));
 834
 835         if (state->ret == -1) {
 836                 state->vfs_aio_state.error = errno;
 837         }
 838
 839         PROFILE_TIMESTAMP(&end_time);
 840
 841         state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
 842
 843         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
 844 }
 845
 846 static int vfs_pwrite_state_destructor(struct vfswrap_pwrite_state *state)
 847 {
 848         return -1;
 849 }
 850
 851 static void vfs_pwrite_done(struct tevent_req *subreq)
 852 {
 853         struct tevent_req *req = tevent_req_callback_data(
 854                 subreq, struct tevent_req);
 855         struct vfswrap_pwrite_state *state = tevent_req_data(
 856                 req, struct vfswrap_pwrite_state);
 857         int ret;
 858
 859         ret = pthreadpool_tevent_job_recv(subreq);
 860         TALLOC_FREE(subreq);
 861         SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
 862         talloc_set_destructor(state, NULL);
 863         if (tevent_req_error(req, ret)) {
 864                 return;
 865         }
 866
 867         tevent_req_done(req);
 868 }
 869
 870 static ssize_t vfswrap_pwrite_recv(struct tevent_req *req,
 871                                    struct vfs_aio_state *vfs_aio_state)
 872 {
 873         struct vfswrap_pwrite_state *state = tevent_req_data(
 874                 req, struct vfswrap_pwrite_state);
 875
 876         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
 877                 return -1;
 878         }
 879
 880         *vfs_aio_state = state->vfs_aio_state;
 881         return state->ret;
 882 }
 883
 884 struct vfswrap_fsync_state {
 885         ssize_t ret;
 886         int fd;
 887
 888         struct vfs_aio_state vfs_aio_state;
 889         SMBPROFILE_BASIC_ASYNC_STATE(profile_basic);
 890 };
 891
 892 static void vfs_fsync_do(void *private_data);
 893 static void vfs_fsync_done(struct tevent_req *subreq);
 894 static int vfs_fsync_state_destructor(struct vfswrap_fsync_state *state);
 895
 896 static struct tevent_req *vfswrap_fsync_send(struct vfs_handle_struct *handle,
 897                                              TALLOC_CTX *mem_ctx,
 898                                              struct tevent_context *ev,
 899                                              struct files_struct *fsp)
 900 {
 901         struct tevent_req *req, *subreq;
 902         struct vfswrap_fsync_state *state;
 903
 904         req = tevent_req_create(mem_ctx, &state, struct vfswrap_fsync_state);
 905         if (req == NULL) {
 906                 return NULL;
 907         }
 908
 909         state->ret = -1;
 910         state->fd = fsp->fh->fd;
 911
 912         SMBPROFILE_BASIC_ASYNC_START(syscall_asys_fsync, profile_p,
 913                                      state->profile_basic);
 914
 915         subreq = pthreadpool_tevent_job_send(
 916                 state, ev, handle->conn->sconn->pool, vfs_fsync_do, state);
 917         if (tevent_req_nomem(subreq, req)) {
 918                 return tevent_req_post(req, ev);
 919         }
 920         tevent_req_set_callback(subreq, vfs_fsync_done, req);
 921
 922         talloc_set_destructor(state, vfs_fsync_state_destructor);
 923
 924         return req;
 925 }
 926
 927 static void vfs_fsync_do(void *private_data)
 928 {
 929         struct vfswrap_fsync_state *state = talloc_get_type_abort(
 930                 private_data, struct vfswrap_fsync_state);
 931         struct timespec start_time;
 932         struct timespec end_time;
 933
 934         PROFILE_TIMESTAMP(&start_time);
 935
 936         do {
 937                 state->ret = fsync(state->fd);
 938         } while ((state->ret == -1) && (errno == EINTR));
 939
 940         if (state->ret == -1) {
 941                 state->vfs_aio_state.error = errno;
 942         }
 943
 944         PROFILE_TIMESTAMP(&end_time);
 945
 946         state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
 947 }
 948
 949 static int vfs_fsync_state_destructor(struct vfswrap_fsync_state *state)
 950 {
 951         return -1;
 952 }
 953
 954 static void vfs_fsync_done(struct tevent_req *subreq)
 955 {
 956         struct tevent_req *req = tevent_req_callback_data(
 957                 subreq, struct tevent_req);
 958         struct vfswrap_fsync_state *state = tevent_req_data(
 959                 req, struct vfswrap_fsync_state);
 960         int ret;
 961
 962         ret = pthreadpool_tevent_job_recv(subreq);
 963         TALLOC_FREE(subreq);
 964         SMBPROFILE_BASIC_ASYNC_END(state->profile_basic);
 965         talloc_set_destructor(state, NULL);
 966         if (tevent_req_error(req, ret)) {
 967                 return;
 968         }
 969
 970         tevent_req_done(req);
 971 }
 972
 973 static int vfswrap_fsync_recv(struct tevent_req *req,
 974                               struct vfs_aio_state *vfs_aio_state)
 975 {
 976         struct vfswrap_fsync_state *state = tevent_req_data(
 977                 req, struct vfswrap_fsync_state);
 978
 979         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
 980                 return -1;
 981         }
 982
 983         *vfs_aio_state = state->vfs_aio_state;
 984         return state->ret;
 985 }
 986
 987 static off_t vfswrap_lseek(vfs_handle_struct *handle, files_struct *fsp, off_t offset, int whence)
 988 {
 989         off_t result = 0;
 990
 991         START_PROFILE(syscall_lseek);
 992
 993         /* Cope with 'stat' file opens. */
 994         if (fsp->fh->fd != -1)
 995                 result = lseek(fsp->fh->fd, offset, whence);
 996
 997         /*
 998          * We want to maintain the fiction that we can seek
 999          * on a fifo for file system purposes. This allows
1000          * people to set up UNIX fifo's that feed data to Windows
1001          * applications. JRA.
1002          */
1003
1004         if((result == -1) && (errno == ESPIPE)) {
1005                 result = 0;
1006                 errno = 0;
1007         }
1008
1009         END_PROFILE(syscall_lseek);
1010         return result;
1011 }
1012
1013 static ssize_t vfswrap_sendfile(vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *hdr,
1014                         off_t offset, size_t n)
1015 {
1016         ssize_t result;
1017
1018         START_PROFILE_BYTES(syscall_sendfile, n);
1019         result = sys_sendfile(tofd, fromfsp->fh->fd, hdr, offset, n);
1020         END_PROFILE_BYTES(syscall_sendfile);
1021         return result;
1022 }
1023
1024 static ssize_t vfswrap_recvfile(vfs_handle_struct *handle,
1025                         int fromfd,
1026                         files_struct *tofsp,
1027                         off_t offset,
1028                         size_t n)
1029 {
1030         ssize_t result;
1031
1032         START_PROFILE_BYTES(syscall_recvfile, n);
1033         result = sys_recvfile(fromfd, tofsp->fh->fd, offset, n);
1034         END_PROFILE_BYTES(syscall_recvfile);
1035         return result;
1036 }
1037
1038 static int vfswrap_rename(vfs_handle_struct *handle,
1039                           const struct smb_filename *smb_fname_src,
1040                           const struct smb_filename *smb_fname_dst)
1041 {
1042         int result = -1;
1043
1044         START_PROFILE(syscall_rename);
1045
1046         if (smb_fname_src->stream_name || smb_fname_dst->stream_name) {
1047                 errno = ENOENT;
1048                 goto out;
1049         }
1050
1051         result = rename(smb_fname_src->base_name, smb_fname_dst->base_name);
1052
1053  out:
1054         END_PROFILE(syscall_rename);
1055         return result;
1056 }
1057
1058 static int vfswrap_stat(vfs_handle_struct *handle,
1059                         struct smb_filename *smb_fname)
1060 {
1061         int result = -1;
1062
1063         START_PROFILE(syscall_stat);
1064
1065         if (smb_fname->stream_name) {
1066                 errno = ENOENT;
1067                 goto out;
1068         }
1069
1070         result = sys_stat(smb_fname->base_name, &smb_fname->st,
1071                           lp_fake_directory_create_times(SNUM(handle->conn)));
1072  out:
1073         END_PROFILE(syscall_stat);
1074         return result;
1075 }
1076
1077 static int vfswrap_fstat(vfs_handle_struct *handle, files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1078 {
1079         int result;
1080
1081         START_PROFILE(syscall_fstat);
1082         result = sys_fstat(fsp->fh->fd,
1083                            sbuf, lp_fake_directory_create_times(SNUM(handle->conn)));
1084         END_PROFILE(syscall_fstat);
1085         return result;
1086 }
1087
1088 static int vfswrap_lstat(vfs_handle_struct *handle,
1089                          struct smb_filename *smb_fname)
1090 {
1091         int result = -1;
1092
1093         START_PROFILE(syscall_lstat);
1094
1095         if (smb_fname->stream_name) {
1096                 errno = ENOENT;
1097                 goto out;
1098         }
1099
1100         result = sys_lstat(smb_fname->base_name, &smb_fname->st,
1101                            lp_fake_directory_create_times(SNUM(handle->conn)));
1102  out:
1103         END_PROFILE(syscall_lstat);
1104         return result;
1105 }
1106
1107 static NTSTATUS vfswrap_translate_name(struct vfs_handle_struct *handle,
1108                                        const char *name,
1109                                        enum vfs_translate_direction direction,
1110                                        TALLOC_CTX *mem_ctx,
1111                                        char **mapped_name)
1112 {
1113         return NT_STATUS_NONE_MAPPED;
1114 }
1115
1116 /*
1117  * Implement the default fsctl operation.
1118  */
1119 static bool vfswrap_logged_ioctl_message = false;
1120
1121 static NTSTATUS vfswrap_fsctl(struct vfs_handle_struct *handle,
1122                               struct files_struct *fsp,
1123                               TALLOC_CTX *ctx,
1124                               uint32_t function,
1125                               uint16_t req_flags, /* Needed for UNICODE ... */
1126                               const uint8_t *_in_data,
1127                               uint32_t in_len,
1128                               uint8_t **_out_data,
1129                               uint32_t max_out_len,
1130                               uint32_t *out_len)
1131 {
1132         const char *in_data = (const char *)_in_data;
1133         char **out_data = (char **)_out_data;
1134         NTSTATUS status;
1135
1136         switch (function) {
1137         case FSCTL_SET_SPARSE:
1138         {
1139                 bool set_sparse = true;
1140
1141                 if (in_len >= 1 && in_data[0] == 0) {
1142                         set_sparse = false;
1143                 }
1144
1145                 status = file_set_sparse(handle->conn, fsp, set_sparse);
1146
1147                 DEBUG(NT_STATUS_IS_OK(status) ? 10 : 9,
1148                       ("FSCTL_SET_SPARSE: fname[%s] set[%u] - %s\n",
1149                        smb_fname_str_dbg(fsp->fsp_name), set_sparse,
1150                        nt_errstr(status)));
1151
1152                 return status;
1153         }
1154
1155         case FSCTL_CREATE_OR_GET_OBJECT_ID:
1156         {
1157                 unsigned char objid[16];
1158                 char *return_data = NULL;
1159
1160                 /* This should return the object-id on this file.
1161                  * I think I'll make this be the inode+dev. JRA.
1162                  */
1163
1164                 DEBUG(10,("FSCTL_CREATE_OR_GET_OBJECT_ID: called on %s\n",
1165                           fsp_fnum_dbg(fsp)));
1166
1167                 *out_len = MIN(max_out_len, 64);
1168
1169                 /* Hmmm, will this cause problems if less data asked for? */
1170                 return_data = talloc_array(ctx, char, 64);
1171                 if (return_data == NULL) {
1172                         return NT_STATUS_NO_MEMORY;
1173                 }
1174
1175                 /* For backwards compatibility only store the dev/inode. */
1176                 push_file_id_16(return_data, &fsp->file_id);
1177                 memcpy(return_data+16,create_volume_objectid(fsp->conn,objid),16);
1178                 push_file_id_16(return_data+32, &fsp->file_id);
1179                 memset(return_data+48, 0, 16);
1180                 *out_data = return_data;
1181                 return NT_STATUS_OK;
1182         }
1183
1184         case FSCTL_GET_REPARSE_POINT:
1185         {
1186                 /* Fail it with STATUS_NOT_A_REPARSE_POINT */
1187                 DEBUG(10, ("FSCTL_GET_REPARSE_POINT: called on %s. "
1188                            "Status: NOT_IMPLEMENTED\n", fsp_fnum_dbg(fsp)));
1189                 return NT_STATUS_NOT_A_REPARSE_POINT;
1190         }
1191
1192         case FSCTL_SET_REPARSE_POINT:
1193         {
1194                 /* Fail it with STATUS_NOT_A_REPARSE_POINT */
1195                 DEBUG(10, ("FSCTL_SET_REPARSE_POINT: called on %s. "
1196                            "Status: NOT_IMPLEMENTED\n", fsp_fnum_dbg(fsp)));
1197                 return NT_STATUS_NOT_A_REPARSE_POINT;
1198         }
1199
1200         case FSCTL_GET_SHADOW_COPY_DATA:
1201         {
1202                 /*
1203                  * This is called to retrieve the number of Shadow Copies (a.k.a. snapshots)
1204                  * and return their volume names.  If max_data_count is 16, then it is just
1205                  * asking for the number of volumes and length of the combined names.
1206                  *
1207                  * pdata is the data allocated by our caller, but that uses
1208                  * total_data_count (which is 0 in our case) rather than max_data_count.
1209                  * Allocate the correct amount and return the pointer to let
1210                  * it be deallocated when we return.
1211                  */
1212                 struct shadow_copy_data *shadow_data = NULL;
1213                 bool labels = False;
1214                 uint32_t labels_data_count = 0;
1215                 uint32_t i;
1216                 char *cur_pdata = NULL;
1217
1218                 if (max_out_len < 16) {
1219                         DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: max_data_count(%u) < 16 is invalid!\n",
1220                                 max_out_len));
1221                         return NT_STATUS_INVALID_PARAMETER;
1222                 }
1223
1224                 if (max_out_len > 16) {
1225                         labels = True;
1226                 }
1227
1228                 shadow_data = talloc_zero(ctx, struct shadow_copy_data);
1229                 if (shadow_data == NULL) {
1230                         DEBUG(0,("TALLOC_ZERO() failed!\n"));
1231                         return NT_STATUS_NO_MEMORY;
1232                 }
1233
1234                 /*
1235                  * Call the VFS routine to actually do the work.
1236                  */
1237                 if (SMB_VFS_GET_SHADOW_COPY_DATA(fsp, shadow_data, labels)!=0) {
1238                         int log_lev = 0;
1239                         if (errno == 0) {
1240                                 /* broken module didn't set errno on error */
1241                                 status = NT_STATUS_UNSUCCESSFUL;
1242                         } else {
1243                                 status = map_nt_error_from_unix(errno);
1244                                 if (NT_STATUS_EQUAL(status,
1245                                                     NT_STATUS_NOT_SUPPORTED)) {
1246                                         log_lev = 5;
1247                                 }
1248                         }
1249                         DEBUG(log_lev, ("FSCTL_GET_SHADOW_COPY_DATA: "
1250                                         "connectpath %s, failed - %s.\n",
1251                                         fsp->conn->connectpath,
1252                                         nt_errstr(status)));
1253                         TALLOC_FREE(shadow_data);
1254                         return status;
1255                 }
1256
1257                 labels_data_count = (shadow_data->num_volumes * 2 *
1258                                         sizeof(SHADOW_COPY_LABEL)) + 2;
1259
1260                 if (!labels) {
1261                         *out_len = 16;
1262                 } else {
1263                         *out_len = 12 + labels_data_count;
1264                 }
1265
1266                 if (max_out_len < *out_len) {
1267                         DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: max_data_count(%u) too small (%u) bytes needed!\n",
1268                                 max_out_len, *out_len));
1269                         TALLOC_FREE(shadow_data);
1270                         return NT_STATUS_BUFFER_TOO_SMALL;
1271                 }
1272
1273                 cur_pdata = talloc_zero_array(ctx, char, *out_len);
1274                 if (cur_pdata == NULL) {
1275                         TALLOC_FREE(shadow_data);
1276                         return NT_STATUS_NO_MEMORY;
1277                 }
1278
1279                 *out_data = cur_pdata;
1280
1281                 /* num_volumes 4 bytes */
1282                 SIVAL(cur_pdata, 0, shadow_data->num_volumes);
1283
1284                 if (labels) {
1285                         /* num_labels 4 bytes */
1286                         SIVAL(cur_pdata, 4, shadow_data->num_volumes);
1287                 }
1288
1289                 /* needed_data_count 4 bytes */
1290                 SIVAL(cur_pdata, 8, labels_data_count);
1291
1292                 cur_pdata += 12;
1293
1294                 DEBUG(10,("FSCTL_GET_SHADOW_COPY_DATA: %u volumes for path[%s].\n",
1295                           shadow_data->num_volumes, fsp_str_dbg(fsp)));
1296                 if (labels && shadow_data->labels) {
1297                         for (i=0; i<shadow_data->num_volumes; i++) {
1298                                 size_t len = 0;
1299                                 status = srvstr_push(cur_pdata, req_flags,
1300                                             cur_pdata, shadow_data->labels[i],
1301                                             2 * sizeof(SHADOW_COPY_LABEL),
1302                                             STR_UNICODE|STR_TERMINATE, &len);
1303                                 if (!NT_STATUS_IS_OK(status)) {
1304                                         TALLOC_FREE(*out_data);
1305                                         TALLOC_FREE(shadow_data);
1306                                         return status;
1307                                 }
1308                                 cur_pdata += 2 * sizeof(SHADOW_COPY_LABEL);
1309                                 DEBUGADD(10,("Label[%u]: '%s'\n",i,shadow_data->labels[i]));
1310                         }
1311                 }
1312
1313                 TALLOC_FREE(shadow_data);
1314
1315                 return NT_STATUS_OK;
1316         }
1317
1318         case FSCTL_FIND_FILES_BY_SID:
1319         {
1320                 /* pretend this succeeded -
1321                  *
1322                  * we have to send back a list with all files owned by this SID
1323                  *
1324                  * but I have to check that --metze
1325                  */
1326                 struct dom_sid sid;
1327                 uid_t uid;
1328                 size_t sid_len;
1329
1330                 DEBUG(10, ("FSCTL_FIND_FILES_BY_SID: called on %s\n",
1331                            fsp_fnum_dbg(fsp)));
1332
1333                 if (in_len < 8) {
1334                         /* NT_STATUS_BUFFER_TOO_SMALL maybe? */
1335                         return NT_STATUS_INVALID_PARAMETER;
1336                 }
1337
1338                 sid_len = MIN(in_len - 4,SID_MAX_SIZE);
1339
1340                 /* unknown 4 bytes: this is not the length of the sid :-(  */
1341                 /*unknown = IVAL(pdata,0);*/
1342
1343                 if (!sid_parse(_in_data + 4, sid_len, &sid)) {
1344                         return NT_STATUS_INVALID_PARAMETER;
1345                 }
1346                 DEBUGADD(10, ("for SID: %s\n", sid_string_dbg(&sid)));
1347
1348                 if (!sid_to_uid(&sid, &uid)) {
1349                         DEBUG(0,("sid_to_uid: failed, sid[%s] sid_len[%lu]\n",
1350                                  sid_string_dbg(&sid),
1351                                  (unsigned long)sid_len));
1352                         uid = (-1);
1353                 }
1354
1355                 /* we can take a look at the find source :-)
1356                  *
1357                  * find ./ -uid $uid  -name '*'   is what we need here
1358                  *
1359                  *
1360                  * and send 4bytes len and then NULL terminated unicode strings
1361                  * for each file
1362                  *
1363                  * but I don't know how to deal with the paged results
1364                  * (maybe we can hang the result anywhere in the fsp struct)
1365                  *
1366                  * but I don't know how to deal with the paged results
1367                  * (maybe we can hang the result anywhere in the fsp struct)
1368                  *
1369                  * we don't send all files at once
1370                  * and at the next we should *not* start from the beginning,
1371                  * so we have to cache the result
1372                  *
1373                  * --metze
1374                  */
1375
1376                 /* this works for now... */
1377                 return NT_STATUS_OK;
1378         }
1379
1380         case FSCTL_QUERY_ALLOCATED_RANGES:
1381         {
1382                 /* FIXME: This is just a dummy reply, telling that all of the
1383                  * file is allocated. MKS cp needs that.
1384                  * Adding the real allocated ranges via FIEMAP on Linux
1385                  * and SEEK_DATA/SEEK_HOLE on Solaris is needed to make
1386                  * this FSCTL correct for sparse files.
1387                  */
1388                 uint64_t offset, length;
1389                 char *out_data_tmp = NULL;
1390
1391                 if (in_len != 16) {
1392                         DEBUG(0,("FSCTL_QUERY_ALLOCATED_RANGES: data_count(%u) != 16 is invalid!\n",
1393                                 in_len));
1394                         return NT_STATUS_INVALID_PARAMETER;
1395                 }
1396
1397                 if (max_out_len < 16) {
1398                         DEBUG(0,("FSCTL_QUERY_ALLOCATED_RANGES: max_out_len (%u) < 16 is invalid!\n",
1399                                 max_out_len));
1400                         return NT_STATUS_INVALID_PARAMETER;
1401                 }
1402
1403                 offset = BVAL(in_data,0);
1404                 length = BVAL(in_data,8);
1405
1406                 if (offset + length < offset) {
1407                         /* No 64-bit integer wrap. */
1408                         return NT_STATUS_INVALID_PARAMETER;
1409                 }
1410
1411                 /* Shouldn't this be SMB_VFS_STAT ... ? */
1412                 status = vfs_stat_fsp(fsp);
1413                 if (!NT_STATUS_IS_OK(status)) {
1414                         return status;
1415                 }
1416
1417                 *out_len = 16;
1418                 out_data_tmp = talloc_array(ctx, char, *out_len);
1419                 if (out_data_tmp == NULL) {
1420                         DEBUG(10, ("unable to allocate memory for response\n"));
1421                         return NT_STATUS_NO_MEMORY;
1422                 }
1423
1424                 if (offset > fsp->fsp_name->st.st_ex_size ||
1425                                 fsp->fsp_name->st.st_ex_size == 0 ||
1426                                 length == 0) {
1427                         memset(out_data_tmp, 0, *out_len);
1428                 } else {
1429                         uint64_t end = offset + length;
1430                         end = MIN(end, fsp->fsp_name->st.st_ex_size);
1431                         SBVAL(out_data_tmp, 0, 0);
1432                         SBVAL(out_data_tmp, 8, end);
1433                 }
1434
1435                 *out_data = out_data_tmp;
1436
1437                 return NT_STATUS_OK;
1438         }
1439
1440         case FSCTL_IS_VOLUME_DIRTY:
1441         {
1442                 DEBUG(10,("FSCTL_IS_VOLUME_DIRTY: called on %s "
1443                           "(but remotely not supported)\n", fsp_fnum_dbg(fsp)));
1444                 /*
1445                  * http://msdn.microsoft.com/en-us/library/cc232128%28PROT.10%29.aspx
1446                  * says we have to respond with NT_STATUS_INVALID_PARAMETER
1447                  */
1448                 return NT_STATUS_INVALID_PARAMETER;
1449         }
1450
1451         default:
1452                 /*
1453                  * Only print once ... unfortunately there could be lots of
1454                  * different FSCTLs that are called.
1455                  */
1456                 if (!vfswrap_logged_ioctl_message) {
1457                         vfswrap_logged_ioctl_message = true;
1458                         DEBUG(2, ("%s (0x%x): Currently not implemented.\n",
1459                         __func__, function));
1460                 }
1461         }
1462
1463         return NT_STATUS_NOT_SUPPORTED;
1464 }
1465
1466 static bool vfswrap_is_offline(struct vfs_handle_struct *handle,
1467                                const struct smb_filename *fname,
1468                                SMB_STRUCT_STAT *sbuf);
1469
1470 static NTSTATUS vfswrap_get_dos_attributes(struct vfs_handle_struct *handle,
1471                                            struct smb_filename *smb_fname,
1472                                            uint32_t *dosmode)
1473 {
1474         bool offline;
1475
1476         offline = vfswrap_is_offline(handle, smb_fname, &smb_fname->st);
1477         if (offline) {
1478                 *dosmode |= FILE_ATTRIBUTE_OFFLINE;
1479         }
1480
1481         return get_ea_dos_attribute(handle->conn, smb_fname, dosmode);
1482 }
1483
1484 static NTSTATUS vfswrap_fget_dos_attributes(struct vfs_handle_struct *handle,
1485                                             struct files_struct *fsp,
1486                                             uint32_t *dosmode)
1487 {
1488         bool offline;
1489
1490         offline = vfswrap_is_offline(handle, fsp->fsp_name, &fsp->fsp_name->st);
1491         if (offline) {
1492                 *dosmode |= FILE_ATTRIBUTE_OFFLINE;
1493         }
1494
1495         return get_ea_dos_attribute(handle->conn, fsp->fsp_name, dosmode);
1496 }
1497
1498 static NTSTATUS vfswrap_set_dos_attributes(struct vfs_handle_struct *handle,
1499                                            const struct smb_filename *smb_fname,
1500                                            uint32_t dosmode)
1501 {
1502         return set_ea_dos_attribute(handle->conn, smb_fname, dosmode);
1503 }
1504
1505 static NTSTATUS vfswrap_fset_dos_attributes(struct vfs_handle_struct *handle,
1506                                             struct files_struct *fsp,
1507                                             uint32_t dosmode)
1508 {
1509         return set_ea_dos_attribute(handle->conn, fsp->fsp_name, dosmode);
1510 }
1511
1512 static struct vfs_offload_ctx *vfswrap_offload_ctx;
1513
1514 struct vfswrap_offload_read_state {
1515         DATA_BLOB token;
1516 };
1517
1518 static struct tevent_req *vfswrap_offload_read_send(
1519         TALLOC_CTX *mem_ctx,
1520         struct tevent_context *ev,
1521         struct vfs_handle_struct *handle,
1522         struct files_struct *fsp,
1523         uint32_t fsctl,
1524         uint32_t ttl,
1525         off_t offset,
1526         size_t to_copy)
1527 {
1528         struct tevent_req *req = NULL;
1529         struct vfswrap_offload_read_state *state = NULL;
1530         NTSTATUS status;
1531
1532         req = tevent_req_create(mem_ctx, &state,
1533                                 struct vfswrap_offload_read_state);
1534         if (req == NULL) {
1535                 return NULL;
1536         }
1537
1538         status = vfs_offload_token_ctx_init(fsp->conn->sconn->client,
1539                                             &vfswrap_offload_ctx);
1540         if (tevent_req_nterror(req, status)) {
1541                 return tevent_req_post(req, ev);
1542         }
1543
1544         if (fsctl != FSCTL_SRV_REQUEST_RESUME_KEY) {
1545                 tevent_req_nterror(req, NT_STATUS_INVALID_DEVICE_REQUEST);
1546                 return tevent_req_post(req, ev);
1547         }
1548
1549         status = vfs_offload_token_create_blob(state, fsp, fsctl,
1550                                                &state->token);
1551         if (tevent_req_nterror(req, status)) {
1552                 return tevent_req_post(req, ev);
1553         }
1554
1555         status = vfs_offload_token_db_store_fsp(vfswrap_offload_ctx, fsp,
1556                                                 &state->token);
1557         if (tevent_req_nterror(req, status)) {
1558                 return tevent_req_post(req, ev);
1559         }
1560
1561         tevent_req_done(req);
1562         return tevent_req_post(req, ev);
1563 }
1564
1565 static NTSTATUS vfswrap_offload_read_recv(struct tevent_req *req,
1566                                           struct vfs_handle_struct *handle,
1567                                           TALLOC_CTX *mem_ctx,
1568                                           DATA_BLOB *token)
1569 {
1570         struct vfswrap_offload_read_state *state = tevent_req_data(
1571                 req, struct vfswrap_offload_read_state);
1572         NTSTATUS status;
1573
1574         if (tevent_req_is_nterror(req, &status)) {
1575                 tevent_req_received(req);
1576                 return status;
1577         }
1578
1579         token->length = state->token.length;
1580         token->data = talloc_move(mem_ctx, &state->token.data);
1581
1582         tevent_req_received(req);
1583         return NT_STATUS_OK;
1584 }
1585
1586 struct vfswrap_offload_write_state {
1587         struct tevent_context *ev;
1588         uint8_t *buf;
1589         bool read_lck_locked;
1590         bool write_lck_locked;
1591         DATA_BLOB *token;
1592         struct files_struct *src_fsp;
1593         off_t src_off;
1594         struct files_struct *dst_fsp;
1595         off_t dst_off;
1596         off_t to_copy;
1597         off_t remaining;
1598         size_t next_io_size;
1599 };
1600
1601 static NTSTATUS vfswrap_offload_write_loop(struct tevent_req *req);
1602
1603 static struct tevent_req *vfswrap_offload_write_send(
1604         struct vfs_handle_struct *handle,
1605         TALLOC_CTX *mem_ctx,
1606         struct tevent_context *ev,
1607         uint32_t fsctl,
1608         DATA_BLOB *token,
1609         off_t transfer_offset,
1610         struct files_struct *dest_fsp,
1611         off_t dest_off,
1612         off_t to_copy)
1613 {
1614         struct tevent_req *req;
1615         struct vfswrap_offload_write_state *state = NULL;
1616         size_t num = MIN(to_copy, COPYCHUNK_MAX_TOTAL_LEN);
1617         files_struct *src_fsp = NULL;
1618         NTSTATUS status;
1619
1620         req = tevent_req_create(mem_ctx, &state,
1621                                 struct vfswrap_offload_write_state);
1622         if (req == NULL) {
1623                 return NULL;
1624         }
1625
1626         *state = (struct vfswrap_offload_write_state) {
1627                 .ev = ev,
1628                 .token = token,
1629                 .src_off = transfer_offset,
1630                 .dst_fsp = dest_fsp,
1631                 .dst_off = dest_off,
1632                 .to_copy = to_copy,
1633                 .remaining = to_copy,
1634         };
1635
1636         switch (fsctl) {
1637         case FSCTL_SRV_COPYCHUNK:
1638         case FSCTL_SRV_COPYCHUNK_WRITE:
1639                 break;
1640
1641         case FSCTL_OFFLOAD_WRITE:
1642                 tevent_req_nterror(req, NT_STATUS_NOT_IMPLEMENTED);
1643                 return tevent_req_post(req, ev);
1644
1645         case FSCTL_DUP_EXTENTS_TO_FILE:
1646                 DBG_DEBUG("COW clones not supported by vfs_default\n");
1647                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
1648                 return tevent_req_post(req, ev);
1649
1650         default:
1651                 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
1652                 return tevent_req_post(req, ev);
1653         }
1654
1655         /*
1656          * From here on we assume a copy-chunk fsctl
1657          */
1658
1659         if (to_copy == 0) {
1660                 tevent_req_done(req);
1661                 return tevent_req_post(req, ev);
1662         }
1663
1664         status = vfs_offload_token_db_fetch_fsp(vfswrap_offload_ctx,
1665                                                 token, &src_fsp);
1666         if (tevent_req_nterror(req, status)) {
1667                 return tevent_req_post(req, ev);
1668         }
1669         state->src_fsp = src_fsp;
1670
1671         DBG_DEBUG("server side copy chunk of length %" PRIu64 "\n", to_copy);
1672
1673         status = vfs_offload_token_check_handles(fsctl, src_fsp, dest_fsp);
1674         if (!NT_STATUS_IS_OK(status)) {
1675                 tevent_req_nterror(req, status);
1676                 return tevent_req_post(req, ev);
1677         }
1678
1679         state->buf = talloc_array(state, uint8_t, num);
1680         if (tevent_req_nomem(state->buf, req)) {
1681                 return tevent_req_post(req, ev);
1682         }
1683
1684         status = vfs_stat_fsp(src_fsp);
1685         if (tevent_req_nterror(req, status)) {
1686                 return tevent_req_post(req, ev);
1687         }
1688
1689         if (src_fsp->fsp_name->st.st_ex_size < state->src_off + num) {
1690                 /*
1691                  * [MS-SMB2] 3.3.5.15.6 Handling a Server-Side Data Copy Request
1692                  *   If the SourceOffset or SourceOffset + Length extends beyond
1693                  *   the end of file, the server SHOULD<240> treat this as a
1694                  *   STATUS_END_OF_FILE error.
1695                  * ...
1696                  *   <240> Section 3.3.5.15.6: Windows servers will return
1697                  *   STATUS_INVALID_VIEW_SIZE instead of STATUS_END_OF_FILE.
1698                  */
1699                 tevent_req_nterror(req, NT_STATUS_INVALID_VIEW_SIZE);
1700                 return tevent_req_post(req, ev);
1701         }
1702
1703         if (src_fsp->op == NULL) {
1704                 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
1705                 return tevent_req_post(req, ev);
1706         }
1707
1708         if (dest_fsp->op == NULL) {
1709                 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
1710                 return tevent_req_post(req, ev);
1711         }
1712
1713         status = vfswrap_offload_write_loop(req);
1714         if (!NT_STATUS_IS_OK(status)) {
1715                 tevent_req_nterror(req, status);
1716                 return tevent_req_post(req, ev);
1717         }
1718
1719         return req;
1720 }
1721
1722 static void vfswrap_offload_write_read_done(struct tevent_req *subreq);
1723
1724 static NTSTATUS vfswrap_offload_write_loop(struct tevent_req *req)
1725 {
1726         struct vfswrap_offload_write_state *state = tevent_req_data(
1727                 req, struct vfswrap_offload_write_state);
1728         struct tevent_req *subreq = NULL;
1729         struct lock_struct read_lck;
1730         bool ok;
1731
1732         state->next_io_size = MIN(state->remaining, talloc_array_length(state->buf));
1733
1734         init_strict_lock_struct(state->src_fsp,
1735                                 state->src_fsp->op->global->open_persistent_id,
1736                                 state->src_off,
1737                                 state->next_io_size,
1738                                 READ_LOCK,
1739                                 &read_lck);
1740
1741         ok = SMB_VFS_STRICT_LOCK_CHECK(state->src_fsp->conn,
1742                                  state->src_fsp,
1743                                  &read_lck);
1744         if (!ok) {
1745                 return NT_STATUS_FILE_LOCK_CONFLICT;
1746         }
1747
1748         subreq = SMB_VFS_PREAD_SEND(state,
1749                                     state->src_fsp->conn->sconn->ev_ctx,
1750                                     state->src_fsp,
1751                                     state->buf,
1752                                     state->next_io_size,
1753                                     state->src_off);
1754         if (subreq == NULL) {
1755                 return NT_STATUS_NO_MEMORY;
1756         }
1757         tevent_req_set_callback(subreq, vfswrap_offload_write_read_done, req);
1758
1759         return NT_STATUS_OK;
1760 }
1761
1762 static void vfswrap_offload_write_write_done(struct tevent_req *subreq);
1763
1764 static void vfswrap_offload_write_read_done(struct tevent_req *subreq)
1765 {
1766         struct tevent_req *req = tevent_req_callback_data(
1767                 subreq, struct tevent_req);
1768         struct vfswrap_offload_write_state *state = tevent_req_data(
1769                 req, struct vfswrap_offload_write_state);
1770         struct vfs_aio_state aio_state;
1771         struct lock_struct write_lck;
1772         ssize_t nread;
1773         bool ok;
1774
1775         nread = SMB_VFS_PREAD_RECV(subreq, &aio_state);
1776         TALLOC_FREE(subreq);
1777         if (nread == -1) {
1778                 DBG_ERR("read failed: %s\n", strerror(errno));
1779                 tevent_req_nterror(req, map_nt_error_from_unix(aio_state.error));
1780                 return;
1781         }
1782         if (nread != state->next_io_size) {
1783                 DBG_ERR("Short read, only %zd of %zu\n",
1784                         nread, state->next_io_size);
1785                 tevent_req_nterror(req, NT_STATUS_IO_DEVICE_ERROR);
1786                 return;
1787         }
1788
1789         state->src_off += nread;
1790
1791         init_strict_lock_struct(state->dst_fsp,
1792                                 state->dst_fsp->op->global->open_persistent_id,
1793                                 state->dst_off,
1794                                 state->next_io_size,
1795                                 WRITE_LOCK,
1796                                 &write_lck);
1797
1798         ok = SMB_VFS_STRICT_LOCK_CHECK(state->dst_fsp->conn,
1799                                  state->dst_fsp,
1800                                  &write_lck);
1801         if (!ok) {
1802                 tevent_req_nterror(req, NT_STATUS_FILE_LOCK_CONFLICT);
1803                 return;
1804         }
1805
1806         subreq = SMB_VFS_PWRITE_SEND(state,
1807                                      state->ev,
1808                                      state->dst_fsp,
1809                                      state->buf,
1810                                      state->next_io_size,
1811                                      state->dst_off);
1812         if (subreq == NULL) {
1813                 tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
1814                 return;
1815         }
1816         tevent_req_set_callback(subreq, vfswrap_offload_write_write_done, req);
1817 }
1818
1819 static void vfswrap_offload_write_write_done(struct tevent_req *subreq)
1820 {
1821         struct tevent_req *req = tevent_req_callback_data(
1822                 subreq, struct tevent_req);
1823         struct vfswrap_offload_write_state *state = tevent_req_data(
1824                 req, struct vfswrap_offload_write_state);
1825         struct vfs_aio_state aio_state;
1826         ssize_t nwritten;
1827         NTSTATUS status;
1828
1829         nwritten = SMB_VFS_PWRITE_RECV(subreq, &aio_state);
1830         TALLOC_FREE(subreq);
1831         if (nwritten == -1) {
1832                 DBG_ERR("write failed: %s\n", strerror(errno));
1833                 tevent_req_nterror(req, map_nt_error_from_unix(aio_state.error));
1834                 return;
1835         }
1836         if (nwritten != state->next_io_size) {
1837                 DBG_ERR("Short write, only %zd of %zu\n", nwritten, state->next_io_size);
1838                 tevent_req_nterror(req, NT_STATUS_IO_DEVICE_ERROR);
1839                 return;
1840         }
1841
1842         state->dst_off += nwritten;
1843
1844         if (state->remaining < nwritten) {
1845                 /* Paranoia check */
1846                 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
1847                 return;
1848         }
1849         state->remaining -= nwritten;
1850         if (state->remaining == 0) {
1851                 tevent_req_done(req);
1852                 return;
1853         }
1854
1855         status = vfswrap_offload_write_loop(req);
1856         if (!NT_STATUS_IS_OK(status)) {
1857                 tevent_req_nterror(req, status);
1858                 return;
1859         }
1860
1861         return;
1862 }
1863
1864 static NTSTATUS vfswrap_offload_write_recv(struct vfs_handle_struct *handle,
1865                                         struct tevent_req *req,
1866                                         off_t *copied)
1867 {
1868         struct vfswrap_offload_write_state *state = tevent_req_data(
1869                 req, struct vfswrap_offload_write_state);
1870         NTSTATUS status;
1871
1872         if (tevent_req_is_nterror(req, &status)) {
1873                 DBG_DEBUG("copy chunk failed: %s\n", nt_errstr(status));
1874                 *copied = 0;
1875                 tevent_req_received(req);
1876                 return status;
1877         }
1878
1879         *copied = state->to_copy;
1880         DBG_DEBUG("copy chunk copied %lu\n", (unsigned long)*copied);
1881         tevent_req_received(req);
1882
1883         return NT_STATUS_OK;
1884 }
1885
1886 static NTSTATUS vfswrap_get_compression(struct vfs_handle_struct *handle,
1887                                         TALLOC_CTX *mem_ctx,
1888                                         struct files_struct *fsp,
1889                                         struct smb_filename *smb_fname,
1890                                         uint16_t *_compression_fmt)
1891 {
1892         return NT_STATUS_INVALID_DEVICE_REQUEST;
1893 }
1894
1895 static NTSTATUS vfswrap_set_compression(struct vfs_handle_struct *handle,
1896                                         TALLOC_CTX *mem_ctx,
1897                                         struct files_struct *fsp,
1898                                         uint16_t compression_fmt)
1899 {
1900         return NT_STATUS_INVALID_DEVICE_REQUEST;
1901 }
1902
1903 /********************************************************************
1904  Given a stat buffer return the allocated size on disk, taking into
1905  account sparse files.
1906 ********************************************************************/
1907 static uint64_t vfswrap_get_alloc_size(vfs_handle_struct *handle,
1908                                        struct files_struct *fsp,
1909                                        const SMB_STRUCT_STAT *sbuf)
1910 {
1911         uint64_t result;
1912
1913         START_PROFILE(syscall_get_alloc_size);
1914
1915         if(S_ISDIR(sbuf->st_ex_mode)) {
1916                 result = 0;
1917                 goto out;
1918         }
1919
1920 #if defined(HAVE_STAT_ST_BLOCKS) && defined(STAT_ST_BLOCKSIZE)
1921         /* The type of st_blocksize is blkcnt_t which *MUST* be
1922            signed (according to POSIX) and can be less than 64-bits.
1923            Ensure when we're converting to 64 bits wide we don't
1924            sign extend. */
1925 #if defined(SIZEOF_BLKCNT_T_8)
1926         result = (uint64_t)STAT_ST_BLOCKSIZE * (uint64_t)sbuf->st_ex_blocks;
1927 #elif defined(SIZEOF_BLKCNT_T_4)
1928         {
1929                 uint64_t bs = ((uint64_t)sbuf->st_ex_blocks) & 0xFFFFFFFFLL;
1930                 result = (uint64_t)STAT_ST_BLOCKSIZE * bs;
1931         }
1932 #else
1933 #error SIZEOF_BLKCNT_T_NOT_A_SUPPORTED_VALUE
1934 #endif
1935         if (result == 0) {
1936                 /*
1937                  * Some file systems do not allocate a block for very
1938                  * small files. But for non-empty file should report a
1939                  * positive size.
1940                  */
1941
1942                 uint64_t filesize = get_file_size_stat(sbuf);
1943                 if (filesize > 0) {
1944                         result = MIN((uint64_t)STAT_ST_BLOCKSIZE, filesize);
1945                 }
1946         }
1947 #else
1948         result = get_file_size_stat(sbuf);
1949 #endif
1950
1951         if (fsp && fsp->initial_allocation_size)
1952                 result = MAX(result,fsp->initial_allocation_size);
1953
1954         result = smb_roundup(handle->conn, result);
1955
1956  out:
1957         END_PROFILE(syscall_get_alloc_size);
1958         return result;
1959 }
1960
1961 static int vfswrap_unlink(vfs_handle_struct *handle,
1962                           const struct smb_filename *smb_fname)
1963 {
1964         int result = -1;
1965
1966         START_PROFILE(syscall_unlink);
1967
1968         if (smb_fname->stream_name) {
1969                 errno = ENOENT;
1970                 goto out;
1971         }
1972         result = unlink(smb_fname->base_name);
1973
1974  out:
1975         END_PROFILE(syscall_unlink);
1976         return result;
1977 }
1978
1979 static int vfswrap_chmod(vfs_handle_struct *handle,
1980                         const struct smb_filename *smb_fname,
1981                         mode_t mode)
1982 {
1983         int result;
1984
1985         START_PROFILE(syscall_chmod);
1986         result = chmod(smb_fname->base_name, mode);
1987         END_PROFILE(syscall_chmod);
1988         return result;
1989 }
1990
1991 static int vfswrap_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
1992 {
1993         int result;
1994
1995         START_PROFILE(syscall_fchmod);
1996 #if defined(HAVE_FCHMOD)
1997         result = fchmod(fsp->fh->fd, mode);
1998 #else
1999         result = -1;
2000         errno = ENOSYS;
2001 #endif
2002
2003         END_PROFILE(syscall_fchmod);
2004         return result;
2005 }
2006
2007 static int vfswrap_chown(vfs_handle_struct *handle,
2008                         const struct smb_filename *smb_fname,
2009                         uid_t uid,
2010                         gid_t gid)
2011 {
2012         int result;
2013
2014         START_PROFILE(syscall_chown);
2015         result = chown(smb_fname->base_name, uid, gid);
2016         END_PROFILE(syscall_chown);
2017         return result;
2018 }
2019
2020 static int vfswrap_fchown(vfs_handle_struct *handle, files_struct *fsp, uid_t uid, gid_t gid)
2021 {
2022 #ifdef HAVE_FCHOWN
2023         int result;
2024
2025         START_PROFILE(syscall_fchown);
2026         result = fchown(fsp->fh->fd, uid, gid);
2027         END_PROFILE(syscall_fchown);
2028         return result;
2029 #else
2030         errno = ENOSYS;
2031         return -1;
2032 #endif
2033 }
2034
2035 static int vfswrap_lchown(vfs_handle_struct *handle,
2036                         const struct smb_filename *smb_fname,
2037                         uid_t uid,
2038                         gid_t gid)
2039 {
2040         int result;
2041
2042         START_PROFILE(syscall_lchown);
2043         result = lchown(smb_fname->base_name, uid, gid);
2044         END_PROFILE(syscall_lchown);
2045         return result;
2046 }
2047
2048 static int vfswrap_chdir(vfs_handle_struct *handle,
2049                         const struct smb_filename *smb_fname)
2050 {
2051         int result;
2052
2053         START_PROFILE(syscall_chdir);
2054         result = chdir(smb_fname->base_name);
2055         END_PROFILE(syscall_chdir);
2056         return result;
2057 }
2058
2059 static struct smb_filename *vfswrap_getwd(vfs_handle_struct *handle,
2060                                 TALLOC_CTX *ctx)
2061 {
2062         char *result;
2063         struct smb_filename *smb_fname = NULL;
2064
2065         START_PROFILE(syscall_getwd);
2066         result = sys_getwd();
2067         END_PROFILE(syscall_getwd);
2068
2069         if (result == NULL) {
2070                 return NULL;
2071         }
2072         smb_fname = synthetic_smb_fname(ctx,
2073                                 result,
2074                                 NULL,
2075                                 NULL,
2076                                 0);
2077         /*
2078          * sys_getwd() *always* returns malloced memory.
2079          * We must free here to avoid leaks:
2080          * BUG:https://bugzilla.samba.org/show_bug.cgi?id=13372
2081          */
2082         SAFE_FREE(result);
2083         return smb_fname;
2084 }
2085
2086 /*********************************************************************
2087  nsec timestamp resolution call. Convert down to whatever the underlying
2088  system will support.
2089 **********************************************************************/
2090
2091 static int vfswrap_ntimes(vfs_handle_struct *handle,
2092                           const struct smb_filename *smb_fname,
2093                           struct smb_file_time *ft)
2094 {
2095         int result = -1;
2096
2097         START_PROFILE(syscall_ntimes);
2098
2099         if (smb_fname->stream_name) {
2100                 errno = ENOENT;
2101                 goto out;
2102         }
2103
2104         if (ft != NULL) {
2105                 if (null_timespec(ft->atime)) {
2106                         ft->atime= smb_fname->st.st_ex_atime;
2107                 }
2108
2109                 if (null_timespec(ft->mtime)) {
2110                         ft->mtime = smb_fname->st.st_ex_mtime;
2111                 }
2112
2113                 if (!null_timespec(ft->create_time)) {
2114                         set_create_timespec_ea(handle->conn,
2115                                                smb_fname,
2116                                                ft->create_time);
2117                 }
2118
2119                 if ((timespec_compare(&ft->atime,
2120                                       &smb_fname->st.st_ex_atime) == 0) &&
2121                     (timespec_compare(&ft->mtime,
2122                                       &smb_fname->st.st_ex_mtime) == 0)) {
2123                         return 0;
2124                 }
2125         }
2126
2127 #if defined(HAVE_UTIMENSAT)
2128         if (ft != NULL) {
2129                 struct timespec ts[2];
2130                 ts[0] = ft->atime;
2131                 ts[1] = ft->mtime;
2132                 result = utimensat(AT_FDCWD, smb_fname->base_name, ts, 0);
2133         } else {
2134                 result = utimensat(AT_FDCWD, smb_fname->base_name, NULL, 0);
2135         }
2136         if (!((result == -1) && (errno == ENOSYS))) {
2137                 goto out;
2138         }
2139 #endif
2140 #if defined(HAVE_UTIMES)
2141         if (ft != NULL) {
2142                 struct timeval tv[2];
2143                 tv[0] = convert_timespec_to_timeval(ft->atime);
2144                 tv[1] = convert_timespec_to_timeval(ft->mtime);
2145                 result = utimes(smb_fname->base_name, tv);
2146         } else {
2147                 result = utimes(smb_fname->base_name, NULL);
2148         }
2149         if (!((result == -1) && (errno == ENOSYS))) {
2150                 goto out;
2151         }
2152 #endif
2153 #if defined(HAVE_UTIME)
2154         if (ft != NULL) {
2155                 struct utimbuf times;
2156                 times.actime = convert_timespec_to_time_t(ft->atime);
2157                 times.modtime = convert_timespec_to_time_t(ft->mtime);
2158                 result = utime(smb_fname->base_name, &times);
2159         } else {
2160                 result = utime(smb_fname->base_name, NULL);
2161         }
2162         if (!((result == -1) && (errno == ENOSYS))) {
2163                 goto out;
2164         }
2165 #endif
2166         errno = ENOSYS;
2167         result = -1;
2168
2169  out:
2170         END_PROFILE(syscall_ntimes);
2171         return result;
2172 }
2173
2174 /*********************************************************************
2175  A version of ftruncate that will write the space on disk if strict
2176  allocate is set.
2177 **********************************************************************/
2178
2179 static int strict_allocate_ftruncate(vfs_handle_struct *handle, files_struct *fsp, off_t len)
2180 {
2181         off_t space_to_write;
2182         uint64_t space_avail;
2183         uint64_t bsize,dfree,dsize;
2184         int ret;
2185         NTSTATUS status;
2186         SMB_STRUCT_STAT *pst;
2187
2188         status = vfs_stat_fsp(fsp);
2189         if (!NT_STATUS_IS_OK(status)) {
2190                 return -1;
2191         }
2192         pst = &fsp->fsp_name->st;
2193
2194 #ifdef S_ISFIFO
2195         if (S_ISFIFO(pst->st_ex_mode))
2196                 return 0;
2197 #endif
2198
2199         if (pst->st_ex_size == len)
2200                 return 0;
2201
2202         /* Shrink - just ftruncate. */
2203         if (pst->st_ex_size > len)
2204                 return ftruncate(fsp->fh->fd, len);
2205
2206         space_to_write = len - pst->st_ex_size;
2207
2208         /* for allocation try fallocate first. This can fail on some
2209            platforms e.g. when the filesystem doesn't support it and no
2210            emulation is being done by the libc (like on AIX with JFS1). In that
2211            case we do our own emulation. fallocate implementations can
2212            return ENOTSUP or EINVAL in cases like that. */
2213         ret = SMB_VFS_FALLOCATE(fsp, 0, pst->st_ex_size, space_to_write);
2214         if (ret == -1 && errno == ENOSPC) {
2215                 return -1;
2216         }
2217         if (ret == 0) {
2218                 return 0;
2219         }
2220         DEBUG(10,("strict_allocate_ftruncate: SMB_VFS_FALLOCATE failed with "
2221                 "error %d. Falling back to slow manual allocation\n", errno));
2222
2223         /* available disk space is enough or not? */
2224         space_avail =
2225             get_dfree_info(fsp->conn, fsp->fsp_name, &bsize, &dfree, &dsize);
2226         /* space_avail is 1k blocks */
2227         if (space_avail == (uint64_t)-1 ||
2228                         ((uint64_t)space_to_write/1024 > space_avail) ) {
2229                 errno = ENOSPC;
2230                 return -1;
2231         }
2232
2233         /* Write out the real space on disk. */
2234         ret = vfs_slow_fallocate(fsp, pst->st_ex_size, space_to_write);
2235         if (ret != 0) {
2236                 return -1;
2237         }
2238
2239         return 0;
2240 }
2241
2242 static int vfswrap_ftruncate(vfs_handle_struct *handle, files_struct *fsp, off_t len)
2243 {
2244         int result = -1;
2245         SMB_STRUCT_STAT *pst;
2246         NTSTATUS status;
2247         char c = 0;
2248
2249         START_PROFILE(syscall_ftruncate);
2250
2251         if (lp_strict_allocate(SNUM(fsp->conn)) && !fsp->is_sparse) {
2252                 result = strict_allocate_ftruncate(handle, fsp, len);
2253                 END_PROFILE(syscall_ftruncate);
2254                 return result;
2255         }
2256
2257         /* we used to just check HAVE_FTRUNCATE_EXTEND and only use
2258            ftruncate if the system supports it. Then I discovered that
2259            you can have some filesystems that support ftruncate
2260            expansion and some that don't! On Linux fat can't do
2261            ftruncate extend but ext2 can. */
2262
2263         result = ftruncate(fsp->fh->fd, len);
2264
2265         /* According to W. R. Stevens advanced UNIX prog. Pure 4.3 BSD cannot
2266            extend a file with ftruncate. Provide alternate implementation
2267            for this */
2268
2269         /* Do an fstat to see if the file is longer than the requested
2270            size in which case the ftruncate above should have
2271            succeeded or shorter, in which case seek to len - 1 and
2272            write 1 byte of zero */
2273         status = vfs_stat_fsp(fsp);
2274         if (!NT_STATUS_IS_OK(status)) {
2275                 goto done;
2276         }
2277
2278         /* We need to update the files_struct after successful ftruncate */
2279         if (result == 0) {
2280                 goto done;
2281         }
2282
2283         pst = &fsp->fsp_name->st;
2284
2285 #ifdef S_ISFIFO
2286         if (S_ISFIFO(pst->st_ex_mode)) {
2287                 result = 0;
2288                 goto done;
2289         }
2290 #endif
2291
2292         if (pst->st_ex_size == len) {
2293                 result = 0;
2294                 goto done;
2295         }
2296
2297         if (pst->st_ex_size > len) {
2298                 /* the ftruncate should have worked */
2299                 goto done;
2300         }
2301
2302         if (SMB_VFS_PWRITE(fsp, &c, 1, len-1)!=1) {
2303                 goto done;
2304         }
2305
2306         result = 0;
2307
2308   done:
2309
2310         END_PROFILE(syscall_ftruncate);
2311         return result;
2312 }
2313
2314 static int vfswrap_fallocate(vfs_handle_struct *handle,
2315                         files_struct *fsp,
2316                         uint32_t mode,
2317                         off_t offset,
2318                         off_t len)
2319 {
2320         int result;
2321
2322         START_PROFILE(syscall_fallocate);
2323         if (mode == 0) {
2324                 result = sys_posix_fallocate(fsp->fh->fd, offset, len);
2325                 /*
2326                  * posix_fallocate returns 0 on success, errno on error
2327                  * and doesn't set errno. Make it behave like fallocate()
2328                  * which returns -1, and sets errno on failure.
2329                  */
2330                 if (result != 0) {
2331                         errno = result;
2332                         result = -1;
2333                 }
2334         } else {
2335                 /* sys_fallocate handles filtering of unsupported mode flags */
2336                 result = sys_fallocate(fsp->fh->fd, mode, offset, len);
2337         }
2338         END_PROFILE(syscall_fallocate);
2339         return result;
2340 }
2341
2342 static bool vfswrap_lock(vfs_handle_struct *handle, files_struct *fsp, int op, off_t offset, off_t count, int type)
2343 {
2344         bool result;
2345
2346         START_PROFILE(syscall_fcntl_lock);
2347
2348         if (fsp->use_ofd_locks || !lp_parm_bool(SNUM(fsp->conn),
2349                                                 "smbd",
2350                                                 "force process locks",
2351                                                 false)) {
2352                 op = map_process_lock_to_ofd_lock(op, &fsp->use_ofd_locks);
2353         }
2354
2355         result =  fcntl_lock(fsp->fh->fd, op, offset, count, type);
2356         END_PROFILE(syscall_fcntl_lock);
2357         return result;
2358 }
2359
2360 static int vfswrap_kernel_flock(vfs_handle_struct *handle, files_struct *fsp,
2361                                 uint32_t share_mode, uint32_t access_mask)
2362 {
2363         START_PROFILE(syscall_kernel_flock);
2364         kernel_flock(fsp->fh->fd, share_mode, access_mask);
2365         END_PROFILE(syscall_kernel_flock);
2366         return 0;
2367 }
2368
2369 static bool vfswrap_getlock(vfs_handle_struct *handle, files_struct *fsp, off_t *poffset, off_t *pcount, int *ptype, pid_t *ppid)
2370 {
2371         bool result;
2372         int op = F_GETLK;
2373
2374         START_PROFILE(syscall_fcntl_getlock);
2375
2376         if (fsp->use_ofd_locks || !lp_parm_bool(SNUM(fsp->conn),
2377                                                 "smbd",
2378                                                 "force process locks",
2379                                                 false)) {
2380                 op = map_process_lock_to_ofd_lock(op, &fsp->use_ofd_locks);
2381         }
2382
2383         result = fcntl_getlock(fsp->fh->fd, op, poffset, pcount, ptype, ppid);
2384         END_PROFILE(syscall_fcntl_getlock);
2385         return result;
2386 }
2387
2388 static int vfswrap_linux_setlease(vfs_handle_struct *handle, files_struct *fsp,
2389                                 int leasetype)
2390 {
2391         int result = -1;
2392
2393         START_PROFILE(syscall_linux_setlease);
2394
2395 #ifdef HAVE_KERNEL_OPLOCKS_LINUX
2396         result = linux_setlease(fsp->fh->fd, leasetype);
2397 #else
2398         errno = ENOSYS;
2399 #endif
2400         END_PROFILE(syscall_linux_setlease);
2401         return result;
2402 }
2403
2404 static int vfswrap_symlink(vfs_handle_struct *handle,
2405                         const char *link_target,
2406                         const struct smb_filename *new_smb_fname)
2407 {
2408         int result;
2409
2410         START_PROFILE(syscall_symlink);
2411         result = symlink(link_target, new_smb_fname->base_name);
2412         END_PROFILE(syscall_symlink);
2413         return result;
2414 }
2415
2416 static int vfswrap_readlink(vfs_handle_struct *handle,
2417                         const struct smb_filename *smb_fname,
2418                         char *buf,
2419                         size_t bufsiz)
2420 {
2421         int result;
2422
2423         START_PROFILE(syscall_readlink);
2424         result = readlink(smb_fname->base_name, buf, bufsiz);
2425         END_PROFILE(syscall_readlink);
2426         return result;
2427 }
2428
2429 static int vfswrap_link(vfs_handle_struct *handle,
2430                         const struct smb_filename *old_smb_fname,
2431                         const struct smb_filename *new_smb_fname)
2432 {
2433         int result;
2434
2435         START_PROFILE(syscall_link);
2436         result = link(old_smb_fname->base_name, new_smb_fname->base_name);
2437         END_PROFILE(syscall_link);
2438         return result;
2439 }
2440
2441 static int vfswrap_mknod(vfs_handle_struct *handle,
2442                         const struct smb_filename *smb_fname,
2443                         mode_t mode,
2444                         SMB_DEV_T dev)
2445 {
2446         int result;
2447
2448         START_PROFILE(syscall_mknod);
2449         result = sys_mknod(smb_fname->base_name, mode, dev);
2450         END_PROFILE(syscall_mknod);
2451         return result;
2452 }
2453
2454 static struct smb_filename *vfswrap_realpath(vfs_handle_struct *handle,
2455                         TALLOC_CTX *ctx,
2456                         const struct smb_filename *smb_fname)
2457 {
2458         char *result;
2459         struct smb_filename *result_fname = NULL;
2460
2461         START_PROFILE(syscall_realpath);
2462         result = sys_realpath(smb_fname->base_name);
2463         END_PROFILE(syscall_realpath);
2464         if (result) {
2465                 result_fname = synthetic_smb_fname(ctx, result, NULL, NULL, 0);
2466                 SAFE_FREE(result);
2467         }
2468         return result_fname;
2469 }
2470
2471 static int vfswrap_chflags(vfs_handle_struct *handle,
2472                         const struct smb_filename *smb_fname,
2473                         unsigned int flags)
2474 {
2475 #ifdef HAVE_CHFLAGS
2476         return chflags(smb_fname->base_name, flags);
2477 #else
2478         errno = ENOSYS;
2479         return -1;
2480 #endif
2481 }
2482
2483 static struct file_id vfswrap_file_id_create(struct vfs_handle_struct *handle,
2484                                              const SMB_STRUCT_STAT *sbuf)
2485 {
2486         struct file_id key;
2487
2488         /* the ZERO_STRUCT ensures padding doesn't break using the key as a
2489          * blob */
2490         ZERO_STRUCT(key);
2491
2492         key.devid = sbuf->st_ex_dev;
2493         key.inode = sbuf->st_ex_ino;
2494         /* key.extid is unused by default. */
2495
2496         return key;
2497 }
2498
2499 static NTSTATUS vfswrap_streaminfo(vfs_handle_struct *handle,
2500                                    struct files_struct *fsp,
2501                                    const struct smb_filename *smb_fname,
2502                                    TALLOC_CTX *mem_ctx,
2503                                    unsigned int *pnum_streams,
2504                                    struct stream_struct **pstreams)
2505 {
2506         SMB_STRUCT_STAT sbuf;
2507         struct stream_struct *tmp_streams = NULL;
2508         int ret;
2509
2510         if ((fsp != NULL) && (fsp->is_directory)) {
2511                 /*
2512                  * No default streams on directories
2513                  */
2514                 goto done;
2515         }
2516
2517         if ((fsp != NULL) && (fsp->fh->fd != -1)) {
2518                 ret = SMB_VFS_FSTAT(fsp, &sbuf);
2519         }
2520         else {
2521                 struct smb_filename smb_fname_cp;
2522
2523                 ZERO_STRUCT(smb_fname_cp);
2524                 smb_fname_cp.base_name = discard_const_p(char,
2525                                         smb_fname->base_name);
2526                 smb_fname_cp.flags = smb_fname->flags;
2527
2528                 if (smb_fname_cp.flags & SMB_FILENAME_POSIX_PATH) {
2529                         ret = SMB_VFS_LSTAT(handle->conn, &smb_fname_cp);
2530                 } else {
2531                         ret = SMB_VFS_STAT(handle->conn, &smb_fname_cp);
2532                 }
2533                 sbuf = smb_fname_cp.st;
2534         }
2535
2536         if (ret == -1) {
2537                 return map_nt_error_from_unix(errno);
2538         }
2539
2540         if (S_ISDIR(sbuf.st_ex_mode)) {
2541                 goto done;
2542         }
2543
2544         tmp_streams = talloc_realloc(mem_ctx, *pstreams, struct stream_struct,
2545                                         (*pnum_streams) + 1);
2546         if (tmp_streams == NULL) {
2547                 return NT_STATUS_NO_MEMORY;
2548         }
2549         tmp_streams[*pnum_streams].name = talloc_strdup(tmp_streams, "::$DATA");
2550         if (tmp_streams[*pnum_streams].name == NULL) {
2551                 return NT_STATUS_NO_MEMORY;
2552         }
2553         tmp_streams[*pnum_streams].size = sbuf.st_ex_size;
2554         tmp_streams[*pnum_streams].alloc_size = SMB_VFS_GET_ALLOC_SIZE(handle->conn, fsp, &sbuf);
2555
2556         *pnum_streams += 1;
2557         *pstreams = tmp_streams;
2558  done:
2559         return NT_STATUS_OK;
2560 }
2561
2562 static int vfswrap_get_real_filename(struct vfs_handle_struct *handle,
2563                                      const char *path,
2564                                      const char *name,
2565                                      TALLOC_CTX *mem_ctx,
2566                                      char **found_name)
2567 {
2568         /*
2569          * Don't fall back to get_real_filename so callers can differentiate
2570          * between a full directory scan and an actual case-insensitive stat.
2571          */
2572         errno = EOPNOTSUPP;
2573         return -1;
2574 }
2575
2576 static const char *vfswrap_connectpath(struct vfs_handle_struct *handle,
2577                                    const struct smb_filename *smb_fname)
2578 {
2579         return handle->conn->connectpath;
2580 }
2581
2582 static NTSTATUS vfswrap_brl_lock_windows(struct vfs_handle_struct *handle,
2583                                          struct byte_range_lock *br_lck,
2584                                          struct lock_struct *plock,
2585                                          bool blocking_lock)
2586 {
2587         SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
2588
2589         /* Note: blr is not used in the default implementation. */
2590         return brl_lock_windows_default(br_lck, plock, blocking_lock);
2591 }
2592
2593 static bool vfswrap_brl_unlock_windows(struct vfs_handle_struct *handle,
2594                                        struct messaging_context *msg_ctx,
2595                                        struct byte_range_lock *br_lck,
2596                                        const struct lock_struct *plock)
2597 {
2598         SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
2599
2600         return brl_unlock_windows_default(msg_ctx, br_lck, plock);
2601 }
2602
2603 static bool vfswrap_brl_cancel_windows(struct vfs_handle_struct *handle,
2604                                        struct byte_range_lock *br_lck,
2605                                        struct lock_struct *plock)
2606 {
2607         SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
2608
2609         /* Note: blr is not used in the default implementation. */
2610         return brl_lock_cancel_default(br_lck, plock);
2611 }
2612
2613 static bool vfswrap_strict_lock_check(struct vfs_handle_struct *handle,
2614                                       files_struct *fsp,
2615                                       struct lock_struct *plock)
2616 {
2617         SMB_ASSERT(plock->lock_type == READ_LOCK ||
2618             plock->lock_type == WRITE_LOCK);
2619
2620         return strict_lock_check_default(fsp, plock);
2621 }
2622
2623 /* NT ACL operations. */
2624
2625 static NTSTATUS vfswrap_fget_nt_acl(vfs_handle_struct *handle,
2626                                     files_struct *fsp,
2627                                     uint32_t security_info,
2628                                     TALLOC_CTX *mem_ctx,
2629                                     struct security_descriptor **ppdesc)
2630 {
2631         NTSTATUS result;
2632
2633         START_PROFILE(fget_nt_acl);
2634         result = posix_fget_nt_acl(fsp, security_info,
2635                                    mem_ctx, ppdesc);
2636         END_PROFILE(fget_nt_acl);
2637         return result;
2638 }
2639
2640 static NTSTATUS vfswrap_get_nt_acl(vfs_handle_struct *handle,
2641                                    const struct smb_filename *smb_fname,
2642                                    uint32_t security_info,
2643                                    TALLOC_CTX *mem_ctx,
2644                                    struct security_descriptor **ppdesc)
2645 {
2646         NTSTATUS result;
2647
2648         START_PROFILE(get_nt_acl);
2649         result = posix_get_nt_acl(handle->conn,
2650                                 smb_fname,
2651                                 security_info,
2652                                 mem_ctx,
2653                                 ppdesc);
2654         END_PROFILE(get_nt_acl);
2655         return result;
2656 }
2657
2658 static NTSTATUS vfswrap_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32_t security_info_sent, const struct security_descriptor *psd)
2659 {
2660         NTSTATUS result;
2661
2662         START_PROFILE(fset_nt_acl);
2663         result = set_nt_acl(fsp, security_info_sent, psd);
2664         END_PROFILE(fset_nt_acl);
2665         return result;
2666 }
2667
2668 static NTSTATUS vfswrap_audit_file(struct vfs_handle_struct *handle,
2669                                    struct smb_filename *file,
2670                                    struct security_acl *sacl,
2671                                    uint32_t access_requested,
2672                                    uint32_t access_denied)
2673 {
2674         return NT_STATUS_OK; /* Nothing to do here ... */
2675 }
2676
2677 static int vfswrap_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
2678 {
2679 #ifdef HAVE_NO_ACL
2680         errno = ENOSYS;
2681         return -1;
2682 #else
2683         int result;
2684
2685         START_PROFILE(fchmod_acl);
2686         result = fchmod_acl(fsp, mode);
2687         END_PROFILE(fchmod_acl);
2688         return result;
2689 #endif
2690 }
2691
2692 static SMB_ACL_T vfswrap_sys_acl_get_file(vfs_handle_struct *handle,
2693                                           const struct smb_filename *smb_fname,
2694                                           SMB_ACL_TYPE_T type,
2695                                           TALLOC_CTX *mem_ctx)
2696 {
2697         return sys_acl_get_file(handle, smb_fname, type, mem_ctx);
2698 }
2699
2700 static SMB_ACL_T vfswrap_sys_acl_get_fd(vfs_handle_struct *handle,
2701                                         files_struct *fsp,
2702                                         TALLOC_CTX *mem_ctx)
2703 {
2704         return sys_acl_get_fd(handle, fsp, mem_ctx);
2705 }
2706
2707 static int vfswrap_sys_acl_set_file(vfs_handle_struct *handle,
2708                                 const struct smb_filename *smb_fname,
2709                                 SMB_ACL_TYPE_T acltype,
2710                                 SMB_ACL_T theacl)
2711 {
2712         return sys_acl_set_file(handle, smb_fname, acltype, theacl);
2713 }
2714
2715 static int vfswrap_sys_acl_set_fd(vfs_handle_struct *handle, files_struct *fsp, SMB_ACL_T theacl)
2716 {
2717         return sys_acl_set_fd(handle, fsp, theacl);
2718 }
2719
2720 static int vfswrap_sys_acl_delete_def_file(vfs_handle_struct *handle,
2721                         const struct smb_filename *smb_fname)
2722 {
2723         return sys_acl_delete_def_file(handle, smb_fname);
2724 }
2725
2726 /****************************************************************
2727  Extended attribute operations.
2728 *****************************************************************/
2729
2730 static ssize_t vfswrap_getxattr(struct vfs_handle_struct *handle,
2731                         const struct smb_filename *smb_fname,
2732                         const char *name,
2733                         void *value,
2734                         size_t size)
2735 {
2736         return getxattr(smb_fname->base_name, name, value, size);
2737 }
2738
2739 static ssize_t vfswrap_fgetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size)
2740 {
2741         return fgetxattr(fsp->fh->fd, name, value, size);
2742 }
2743
2744 static ssize_t vfswrap_listxattr(struct vfs_handle_struct *handle,
2745                         const struct smb_filename *smb_fname,
2746                         char *list,
2747                         size_t size)
2748 {
2749         return listxattr(smb_fname->base_name, list, size);
2750 }
2751
2752 static ssize_t vfswrap_flistxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size)
2753 {
2754         return flistxattr(fsp->fh->fd, list, size);
2755 }
2756
2757 static int vfswrap_removexattr(struct vfs_handle_struct *handle,
2758                                 const struct smb_filename *smb_fname,
2759                                 const char *name)
2760 {
2761         return removexattr(smb_fname->base_name, name);
2762 }
2763
2764 static int vfswrap_fremovexattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name)
2765 {
2766         return fremovexattr(fsp->fh->fd, name);
2767 }
2768
2769 static int vfswrap_setxattr(struct vfs_handle_struct *handle,
2770                                 const struct smb_filename *smb_fname,
2771                                 const char *name,
2772                                 const void *value,
2773                                 size_t size,
2774                                 int flags)
2775 {
2776         return setxattr(smb_fname->base_name, name, value, size, flags);
2777 }
2778
2779 static int vfswrap_fsetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags)
2780 {
2781         return fsetxattr(fsp->fh->fd, name, value, size, flags);
2782 }
2783
2784 static bool vfswrap_aio_force(struct vfs_handle_struct *handle, struct files_struct *fsp)
2785 {
2786         return false;
2787 }
2788
2789 static bool vfswrap_is_offline(struct vfs_handle_struct *handle,
2790                                const struct smb_filename *fname,
2791                                SMB_STRUCT_STAT *sbuf)
2792 {
2793         NTSTATUS status;
2794         char *path;
2795         bool offline = false;
2796
2797         if (ISDOT(fname->base_name) || ISDOTDOT(fname->base_name)) {
2798                 return false;
2799         }
2800
2801         if (!lp_dmapi_support(SNUM(handle->conn)) || !dmapi_have_session()) {
2802 #if defined(ENOTSUP)
2803                 errno = ENOTSUP;
2804 #endif
2805                 return false;
2806         }
2807
2808         status = get_full_smb_filename(talloc_tos(), fname, &path);
2809         if (!NT_STATUS_IS_OK(status)) {
2810                 errno = map_errno_from_nt_status(status);
2811                 return false;
2812         }
2813
2814         offline = (dmapi_file_flags(path) & FILE_ATTRIBUTE_OFFLINE) != 0;
2815
2816         TALLOC_FREE(path);
2817
2818         return offline;
2819 }
2820
2821 static NTSTATUS vfswrap_durable_cookie(struct vfs_handle_struct *handle,
2822                                        struct files_struct *fsp,
2823                                        TALLOC_CTX *mem_ctx,
2824                                        DATA_BLOB *cookie)
2825 {
2826         return vfs_default_durable_cookie(fsp, mem_ctx, cookie);
2827 }
2828
2829 static NTSTATUS vfswrap_durable_disconnect(struct vfs_handle_struct *handle,
2830                                            struct files_struct *fsp,
2831                                            const DATA_BLOB old_cookie,
2832                                            TALLOC_CTX *mem_ctx,
2833                                            DATA_BLOB *new_cookie)
2834 {
2835         return vfs_default_durable_disconnect(fsp, old_cookie, mem_ctx,
2836                                               new_cookie);
2837 }
2838
2839 static NTSTATUS vfswrap_durable_reconnect(struct vfs_handle_struct *handle,
2840                                           struct smb_request *smb1req,
2841                                           struct smbXsrv_open *op,
2842                                           const DATA_BLOB old_cookie,
2843                                           TALLOC_CTX *mem_ctx,
2844                                           struct files_struct **fsp,
2845                                           DATA_BLOB *new_cookie)
2846 {
2847         return vfs_default_durable_reconnect(handle->conn, smb1req, op,
2848                                              old_cookie, mem_ctx,
2849                                              fsp, new_cookie);
2850 }
2851
2852 static struct vfs_fn_pointers vfs_default_fns = {
2853         /* Disk operations */
2854
2855         .connect_fn = vfswrap_connect,
2856         .disconnect_fn = vfswrap_disconnect,
2857         .disk_free_fn = vfswrap_disk_free,
2858         .get_quota_fn = vfswrap_get_quota,
2859         .set_quota_fn = vfswrap_set_quota,
2860         .get_shadow_copy_data_fn = vfswrap_get_shadow_copy_data,
2861         .statvfs_fn = vfswrap_statvfs,
2862         .fs_capabilities_fn = vfswrap_fs_capabilities,
2863         .get_dfs_referrals_fn = vfswrap_get_dfs_referrals,
2864         .snap_check_path_fn = vfswrap_snap_check_path,
2865         .snap_create_fn = vfswrap_snap_create,
2866         .snap_delete_fn = vfswrap_snap_delete,
2867
2868         /* Directory operations */
2869
2870         .opendir_fn = vfswrap_opendir,
2871         .fdopendir_fn = vfswrap_fdopendir,
2872         .readdir_fn = vfswrap_readdir,
2873         .readdir_attr_fn = vfswrap_readdir_attr,
2874         .seekdir_fn = vfswrap_seekdir,
2875         .telldir_fn = vfswrap_telldir,
2876         .rewind_dir_fn = vfswrap_rewinddir,
2877         .mkdir_fn = vfswrap_mkdir,
2878         .rmdir_fn = vfswrap_rmdir,
2879         .closedir_fn = vfswrap_closedir,
2880
2881         /* File operations */
2882
2883         .open_fn = vfswrap_open,
2884         .create_file_fn = vfswrap_create_file,
2885         .close_fn = vfswrap_close,
2886         .pread_fn = vfswrap_pread,
2887         .pread_send_fn = vfswrap_pread_send,
2888         .pread_recv_fn = vfswrap_pread_recv,
2889         .pwrite_fn = vfswrap_pwrite,
2890         .pwrite_send_fn = vfswrap_pwrite_send,
2891         .pwrite_recv_fn = vfswrap_pwrite_recv,
2892         .lseek_fn = vfswrap_lseek,
2893         .sendfile_fn = vfswrap_sendfile,
2894         .recvfile_fn = vfswrap_recvfile,
2895         .rename_fn = vfswrap_rename,
2896         .fsync_send_fn = vfswrap_fsync_send,
2897         .fsync_recv_fn = vfswrap_fsync_recv,
2898         .stat_fn = vfswrap_stat,
2899         .fstat_fn = vfswrap_fstat,
2900         .lstat_fn = vfswrap_lstat,
2901         .get_alloc_size_fn = vfswrap_get_alloc_size,
2902         .unlink_fn = vfswrap_unlink,
2903         .chmod_fn = vfswrap_chmod,
2904         .fchmod_fn = vfswrap_fchmod,
2905         .chown_fn = vfswrap_chown,
2906         .fchown_fn = vfswrap_fchown,
2907         .lchown_fn = vfswrap_lchown,
2908         .chdir_fn = vfswrap_chdir,
2909         .getwd_fn = vfswrap_getwd,
2910         .ntimes_fn = vfswrap_ntimes,
2911         .ftruncate_fn = vfswrap_ftruncate,
2912         .fallocate_fn = vfswrap_fallocate,
2913         .lock_fn = vfswrap_lock,
2914         .kernel_flock_fn = vfswrap_kernel_flock,
2915         .linux_setlease_fn = vfswrap_linux_setlease,
2916         .getlock_fn = vfswrap_getlock,
2917         .symlink_fn = vfswrap_symlink,
2918         .readlink_fn = vfswrap_readlink,
2919         .link_fn = vfswrap_link,
2920         .mknod_fn = vfswrap_mknod,
2921         .realpath_fn = vfswrap_realpath,
2922         .chflags_fn = vfswrap_chflags,
2923         .file_id_create_fn = vfswrap_file_id_create,
2924         .streaminfo_fn = vfswrap_streaminfo,
2925         .get_real_filename_fn = vfswrap_get_real_filename,
2926         .connectpath_fn = vfswrap_connectpath,
2927         .brl_lock_windows_fn = vfswrap_brl_lock_windows,
2928         .brl_unlock_windows_fn = vfswrap_brl_unlock_windows,
2929         .brl_cancel_windows_fn = vfswrap_brl_cancel_windows,
2930         .strict_lock_check_fn = vfswrap_strict_lock_check,
2931         .translate_name_fn = vfswrap_translate_name,
2932         .fsctl_fn = vfswrap_fsctl,
2933         .set_dos_attributes_fn = vfswrap_set_dos_attributes,
2934         .fset_dos_attributes_fn = vfswrap_fset_dos_attributes,
2935         .get_dos_attributes_fn = vfswrap_get_dos_attributes,
2936         .fget_dos_attributes_fn = vfswrap_fget_dos_attributes,
2937         .offload_read_send_fn = vfswrap_offload_read_send,
2938         .offload_read_recv_fn = vfswrap_offload_read_recv,
2939         .offload_write_send_fn = vfswrap_offload_write_send,
2940         .offload_write_recv_fn = vfswrap_offload_write_recv,
2941         .get_compression_fn = vfswrap_get_compression,
2942         .set_compression_fn = vfswrap_set_compression,
2943
2944         /* NT ACL operations. */
2945
2946         .fget_nt_acl_fn = vfswrap_fget_nt_acl,
2947         .get_nt_acl_fn = vfswrap_get_nt_acl,
2948         .fset_nt_acl_fn = vfswrap_fset_nt_acl,
2949         .audit_file_fn = vfswrap_audit_file,
2950
2951         /* POSIX ACL operations. */
2952
2953         .fchmod_acl_fn = vfswrap_fchmod_acl,
2954
2955         .sys_acl_get_file_fn = vfswrap_sys_acl_get_file,
2956         .sys_acl_get_fd_fn = vfswrap_sys_acl_get_fd,
2957         .sys_acl_blob_get_file_fn = posix_sys_acl_blob_get_file,
2958         .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
2959         .sys_acl_set_file_fn = vfswrap_sys_acl_set_file,
2960         .sys_acl_set_fd_fn = vfswrap_sys_acl_set_fd,
2961         .sys_acl_delete_def_file_fn = vfswrap_sys_acl_delete_def_file,
2962
2963         /* EA operations. */
2964         .getxattr_fn = vfswrap_getxattr,
2965         .fgetxattr_fn = vfswrap_fgetxattr,
2966         .listxattr_fn = vfswrap_listxattr,
2967         .flistxattr_fn = vfswrap_flistxattr,
2968         .removexattr_fn = vfswrap_removexattr,
2969         .fremovexattr_fn = vfswrap_fremovexattr,
2970         .setxattr_fn = vfswrap_setxattr,
2971         .fsetxattr_fn = vfswrap_fsetxattr,
2972
2973         /* aio operations */
2974         .aio_force_fn = vfswrap_aio_force,
2975
2976         /* durable handle operations */
2977         .durable_cookie_fn = vfswrap_durable_cookie,
2978         .durable_disconnect_fn = vfswrap_durable_disconnect,
2979         .durable_reconnect_fn = vfswrap_durable_reconnect,
2980 };
2981
2982 static_decl_vfs;
2983 NTSTATUS vfs_default_init(TALLOC_CTX *ctx)
2984 {
2985         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
2986                                 DEFAULT_VFS_MODULE_NAME, &vfs_default_fns);
2987 }
2988
2989