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 void vfswrap_offload_write_cleanup(struct tevent_req *req,
1602                                           enum tevent_req_state req_state)
1603 {
1604         struct vfswrap_offload_write_state *state = tevent_req_data(
1605                 req, struct vfswrap_offload_write_state);
1606         bool ok;
1607
1608         if (state->dst_fsp == NULL) {
1609                 return;
1610         }
1611
1612         ok = change_to_user_by_fsp(state->dst_fsp);
1613         SMB_ASSERT(ok);
1614         state->dst_fsp = NULL;
1615 }
1616
1617 static NTSTATUS vfswrap_offload_write_loop(struct tevent_req *req);
1618
1619 static struct tevent_req *vfswrap_offload_write_send(
1620         struct vfs_handle_struct *handle,
1621         TALLOC_CTX *mem_ctx,
1622         struct tevent_context *ev,
1623         uint32_t fsctl,
1624         DATA_BLOB *token,
1625         off_t transfer_offset,
1626         struct files_struct *dest_fsp,
1627         off_t dest_off,
1628         off_t to_copy)
1629 {
1630         struct tevent_req *req;
1631         struct vfswrap_offload_write_state *state = NULL;
1632         size_t num = MIN(to_copy, COPYCHUNK_MAX_TOTAL_LEN);
1633         files_struct *src_fsp = NULL;
1634         NTSTATUS status;
1635         bool ok;
1636
1637         req = tevent_req_create(mem_ctx, &state,
1638                                 struct vfswrap_offload_write_state);
1639         if (req == NULL) {
1640                 return NULL;
1641         }
1642
1643         *state = (struct vfswrap_offload_write_state) {
1644                 .ev = ev,
1645                 .token = token,
1646                 .src_off = transfer_offset,
1647                 .dst_fsp = dest_fsp,
1648                 .dst_off = dest_off,
1649                 .to_copy = to_copy,
1650                 .remaining = to_copy,
1651         };
1652
1653         tevent_req_set_cleanup_fn(req, vfswrap_offload_write_cleanup);
1654
1655         switch (fsctl) {
1656         case FSCTL_SRV_COPYCHUNK:
1657         case FSCTL_SRV_COPYCHUNK_WRITE:
1658                 break;
1659
1660         case FSCTL_OFFLOAD_WRITE:
1661                 tevent_req_nterror(req, NT_STATUS_NOT_IMPLEMENTED);
1662                 return tevent_req_post(req, ev);
1663
1664         case FSCTL_DUP_EXTENTS_TO_FILE:
1665                 DBG_DEBUG("COW clones not supported by vfs_default\n");
1666                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
1667                 return tevent_req_post(req, ev);
1668
1669         default:
1670                 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
1671                 return tevent_req_post(req, ev);
1672         }
1673
1674         /*
1675          * From here on we assume a copy-chunk fsctl
1676          */
1677
1678         if (to_copy == 0) {
1679                 tevent_req_done(req);
1680                 return tevent_req_post(req, ev);
1681         }
1682
1683         status = vfs_offload_token_db_fetch_fsp(vfswrap_offload_ctx,
1684                                                 token, &src_fsp);
1685         if (tevent_req_nterror(req, status)) {
1686                 return tevent_req_post(req, ev);
1687         }
1688         state->src_fsp = src_fsp;
1689
1690         DBG_DEBUG("server side copy chunk of length %" PRIu64 "\n", to_copy);
1691
1692         status = vfs_offload_token_check_handles(fsctl, src_fsp, dest_fsp);
1693         if (!NT_STATUS_IS_OK(status)) {
1694                 tevent_req_nterror(req, status);
1695                 return tevent_req_post(req, ev);
1696         }
1697
1698         ok = change_to_user_by_fsp(src_fsp);
1699         if (!ok) {
1700                 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
1701                 return tevent_req_post(req, ev);
1702         }
1703
1704         state->buf = talloc_array(state, uint8_t, num);
1705         if (tevent_req_nomem(state->buf, req)) {
1706                 return tevent_req_post(req, ev);
1707         }
1708
1709         status = vfs_stat_fsp(src_fsp);
1710         if (tevent_req_nterror(req, status)) {
1711                 return tevent_req_post(req, ev);
1712         }
1713
1714         if (src_fsp->fsp_name->st.st_ex_size < state->src_off + num) {
1715                 /*
1716                  * [MS-SMB2] 3.3.5.15.6 Handling a Server-Side Data Copy Request
1717                  *   If the SourceOffset or SourceOffset + Length extends beyond
1718                  *   the end of file, the server SHOULD<240> treat this as a
1719                  *   STATUS_END_OF_FILE error.
1720                  * ...
1721                  *   <240> Section 3.3.5.15.6: Windows servers will return
1722                  *   STATUS_INVALID_VIEW_SIZE instead of STATUS_END_OF_FILE.
1723                  */
1724                 tevent_req_nterror(req, NT_STATUS_INVALID_VIEW_SIZE);
1725                 return tevent_req_post(req, ev);
1726         }
1727
1728         status = vfswrap_offload_write_loop(req);
1729         if (!NT_STATUS_IS_OK(status)) {
1730                 tevent_req_nterror(req, status);
1731                 return tevent_req_post(req, ev);
1732         }
1733
1734         return req;
1735 }
1736
1737 static void vfswrap_offload_write_read_done(struct tevent_req *subreq);
1738
1739 static NTSTATUS vfswrap_offload_write_loop(struct tevent_req *req)
1740 {
1741         struct vfswrap_offload_write_state *state = tevent_req_data(
1742                 req, struct vfswrap_offload_write_state);
1743         struct tevent_req *subreq = NULL;
1744         struct lock_struct read_lck;
1745         bool ok;
1746
1747         /*
1748          * This is called under the context of state->src_fsp.
1749          */
1750
1751         state->next_io_size = MIN(state->remaining, talloc_array_length(state->buf));
1752
1753         init_strict_lock_struct(state->src_fsp,
1754                                 state->src_fsp->op->global->open_persistent_id,
1755                                 state->src_off,
1756                                 state->next_io_size,
1757                                 READ_LOCK,
1758                                 &read_lck);
1759
1760         ok = SMB_VFS_STRICT_LOCK_CHECK(state->src_fsp->conn,
1761                                  state->src_fsp,
1762                                  &read_lck);
1763         if (!ok) {
1764                 return NT_STATUS_FILE_LOCK_CONFLICT;
1765         }
1766
1767         subreq = SMB_VFS_PREAD_SEND(state,
1768                                     state->src_fsp->conn->sconn->ev_ctx,
1769                                     state->src_fsp,
1770                                     state->buf,
1771                                     state->next_io_size,
1772                                     state->src_off);
1773         if (subreq == NULL) {
1774                 return NT_STATUS_NO_MEMORY;
1775         }
1776         tevent_req_set_callback(subreq, vfswrap_offload_write_read_done, req);
1777
1778         return NT_STATUS_OK;
1779 }
1780
1781 static void vfswrap_offload_write_write_done(struct tevent_req *subreq);
1782
1783 static void vfswrap_offload_write_read_done(struct tevent_req *subreq)
1784 {
1785         struct tevent_req *req = tevent_req_callback_data(
1786                 subreq, struct tevent_req);
1787         struct vfswrap_offload_write_state *state = tevent_req_data(
1788                 req, struct vfswrap_offload_write_state);
1789         struct vfs_aio_state aio_state;
1790         struct lock_struct write_lck;
1791         ssize_t nread;
1792         bool ok;
1793
1794         nread = SMB_VFS_PREAD_RECV(subreq, &aio_state);
1795         TALLOC_FREE(subreq);
1796         if (nread == -1) {
1797                 DBG_ERR("read failed: %s\n", strerror(errno));
1798                 tevent_req_nterror(req, map_nt_error_from_unix(aio_state.error));
1799                 return;
1800         }
1801         if (nread != state->next_io_size) {
1802                 DBG_ERR("Short read, only %zd of %zu\n",
1803                         nread, state->next_io_size);
1804                 tevent_req_nterror(req, NT_STATUS_IO_DEVICE_ERROR);
1805                 return;
1806         }
1807
1808         state->src_off += nread;
1809
1810         ok = change_to_user_by_fsp(state->dst_fsp);
1811         if (!ok) {
1812                 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
1813                 return;
1814         }
1815
1816         init_strict_lock_struct(state->dst_fsp,
1817                                 state->dst_fsp->op->global->open_persistent_id,
1818                                 state->dst_off,
1819                                 state->next_io_size,
1820                                 WRITE_LOCK,
1821                                 &write_lck);
1822
1823         ok = SMB_VFS_STRICT_LOCK_CHECK(state->dst_fsp->conn,
1824                                  state->dst_fsp,
1825                                  &write_lck);
1826         if (!ok) {
1827                 tevent_req_nterror(req, NT_STATUS_FILE_LOCK_CONFLICT);
1828                 return;
1829         }
1830
1831         subreq = SMB_VFS_PWRITE_SEND(state,
1832                                      state->ev,
1833                                      state->dst_fsp,
1834                                      state->buf,
1835                                      state->next_io_size,
1836                                      state->dst_off);
1837         if (subreq == NULL) {
1838                 tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
1839                 return;
1840         }
1841         tevent_req_set_callback(subreq, vfswrap_offload_write_write_done, req);
1842 }
1843
1844 static void vfswrap_offload_write_write_done(struct tevent_req *subreq)
1845 {
1846         struct tevent_req *req = tevent_req_callback_data(
1847                 subreq, struct tevent_req);
1848         struct vfswrap_offload_write_state *state = tevent_req_data(
1849                 req, struct vfswrap_offload_write_state);
1850         struct vfs_aio_state aio_state;
1851         ssize_t nwritten;
1852         NTSTATUS status;
1853         bool ok;
1854
1855         nwritten = SMB_VFS_PWRITE_RECV(subreq, &aio_state);
1856         TALLOC_FREE(subreq);
1857         if (nwritten == -1) {
1858                 DBG_ERR("write failed: %s\n", strerror(errno));
1859                 tevent_req_nterror(req, map_nt_error_from_unix(aio_state.error));
1860                 return;
1861         }
1862         if (nwritten != state->next_io_size) {
1863                 DBG_ERR("Short write, only %zd of %zu\n", nwritten, state->next_io_size);
1864                 tevent_req_nterror(req, NT_STATUS_IO_DEVICE_ERROR);
1865                 return;
1866         }
1867
1868         state->dst_off += nwritten;
1869
1870         if (state->remaining < nwritten) {
1871                 /* Paranoia check */
1872                 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
1873                 return;
1874         }
1875         state->remaining -= nwritten;
1876         if (state->remaining == 0) {
1877                 tevent_req_done(req);
1878                 return;
1879         }
1880
1881         ok = change_to_user_by_fsp(state->src_fsp);
1882         if (!ok) {
1883                 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
1884                 return;
1885         }
1886
1887         status = vfswrap_offload_write_loop(req);
1888         if (!NT_STATUS_IS_OK(status)) {
1889                 tevent_req_nterror(req, status);
1890                 return;
1891         }
1892
1893         return;
1894 }
1895
1896 static NTSTATUS vfswrap_offload_write_recv(struct vfs_handle_struct *handle,
1897                                         struct tevent_req *req,
1898                                         off_t *copied)
1899 {
1900         struct vfswrap_offload_write_state *state = tevent_req_data(
1901                 req, struct vfswrap_offload_write_state);
1902         NTSTATUS status;
1903
1904         if (tevent_req_is_nterror(req, &status)) {
1905                 DBG_DEBUG("copy chunk failed: %s\n", nt_errstr(status));
1906                 *copied = 0;
1907                 tevent_req_received(req);
1908                 return status;
1909         }
1910
1911         *copied = state->to_copy;
1912         DBG_DEBUG("copy chunk copied %lu\n", (unsigned long)*copied);
1913         tevent_req_received(req);
1914
1915         return NT_STATUS_OK;
1916 }
1917
1918 static NTSTATUS vfswrap_get_compression(struct vfs_handle_struct *handle,
1919                                         TALLOC_CTX *mem_ctx,
1920                                         struct files_struct *fsp,
1921                                         struct smb_filename *smb_fname,
1922                                         uint16_t *_compression_fmt)
1923 {
1924         return NT_STATUS_INVALID_DEVICE_REQUEST;
1925 }
1926
1927 static NTSTATUS vfswrap_set_compression(struct vfs_handle_struct *handle,
1928                                         TALLOC_CTX *mem_ctx,
1929                                         struct files_struct *fsp,
1930                                         uint16_t compression_fmt)
1931 {
1932         return NT_STATUS_INVALID_DEVICE_REQUEST;
1933 }
1934
1935 /********************************************************************
1936  Given a stat buffer return the allocated size on disk, taking into
1937  account sparse files.
1938 ********************************************************************/
1939 static uint64_t vfswrap_get_alloc_size(vfs_handle_struct *handle,
1940                                        struct files_struct *fsp,
1941                                        const SMB_STRUCT_STAT *sbuf)
1942 {
1943         uint64_t result;
1944
1945         START_PROFILE(syscall_get_alloc_size);
1946
1947         if(S_ISDIR(sbuf->st_ex_mode)) {
1948                 result = 0;
1949                 goto out;
1950         }
1951
1952 #if defined(HAVE_STAT_ST_BLOCKS) && defined(STAT_ST_BLOCKSIZE)
1953         /* The type of st_blocksize is blkcnt_t which *MUST* be
1954            signed (according to POSIX) and can be less than 64-bits.
1955            Ensure when we're converting to 64 bits wide we don't
1956            sign extend. */
1957 #if defined(SIZEOF_BLKCNT_T_8)
1958         result = (uint64_t)STAT_ST_BLOCKSIZE * (uint64_t)sbuf->st_ex_blocks;
1959 #elif defined(SIZEOF_BLKCNT_T_4)
1960         {
1961                 uint64_t bs = ((uint64_t)sbuf->st_ex_blocks) & 0xFFFFFFFFLL;
1962                 result = (uint64_t)STAT_ST_BLOCKSIZE * bs;
1963         }
1964 #else
1965 #error SIZEOF_BLKCNT_T_NOT_A_SUPPORTED_VALUE
1966 #endif
1967         if (result == 0) {
1968                 /*
1969                  * Some file systems do not allocate a block for very
1970                  * small files. But for non-empty file should report a
1971                  * positive size.
1972                  */
1973
1974                 uint64_t filesize = get_file_size_stat(sbuf);
1975                 if (filesize > 0) {
1976                         result = MIN((uint64_t)STAT_ST_BLOCKSIZE, filesize);
1977                 }
1978         }
1979 #else
1980         result = get_file_size_stat(sbuf);
1981 #endif
1982
1983         if (fsp && fsp->initial_allocation_size)
1984                 result = MAX(result,fsp->initial_allocation_size);
1985
1986         result = smb_roundup(handle->conn, result);
1987
1988  out:
1989         END_PROFILE(syscall_get_alloc_size);
1990         return result;
1991 }
1992
1993 static int vfswrap_unlink(vfs_handle_struct *handle,
1994                           const struct smb_filename *smb_fname)
1995 {
1996         int result = -1;
1997
1998         START_PROFILE(syscall_unlink);
1999
2000         if (smb_fname->stream_name) {
2001                 errno = ENOENT;
2002                 goto out;
2003         }
2004         result = unlink(smb_fname->base_name);
2005
2006  out:
2007         END_PROFILE(syscall_unlink);
2008         return result;
2009 }
2010
2011 static int vfswrap_chmod(vfs_handle_struct *handle,
2012                         const struct smb_filename *smb_fname,
2013                         mode_t mode)
2014 {
2015         int result;
2016
2017         START_PROFILE(syscall_chmod);
2018         result = chmod(smb_fname->base_name, mode);
2019         END_PROFILE(syscall_chmod);
2020         return result;
2021 }
2022
2023 static int vfswrap_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
2024 {
2025         int result;
2026
2027         START_PROFILE(syscall_fchmod);
2028 #if defined(HAVE_FCHMOD)
2029         result = fchmod(fsp->fh->fd, mode);
2030 #else
2031         result = -1;
2032         errno = ENOSYS;
2033 #endif
2034
2035         END_PROFILE(syscall_fchmod);
2036         return result;
2037 }
2038
2039 static int vfswrap_chown(vfs_handle_struct *handle,
2040                         const struct smb_filename *smb_fname,
2041                         uid_t uid,
2042                         gid_t gid)
2043 {
2044         int result;
2045
2046         START_PROFILE(syscall_chown);
2047         result = chown(smb_fname->base_name, uid, gid);
2048         END_PROFILE(syscall_chown);
2049         return result;
2050 }
2051
2052 static int vfswrap_fchown(vfs_handle_struct *handle, files_struct *fsp, uid_t uid, gid_t gid)
2053 {
2054 #ifdef HAVE_FCHOWN
2055         int result;
2056
2057         START_PROFILE(syscall_fchown);
2058         result = fchown(fsp->fh->fd, uid, gid);
2059         END_PROFILE(syscall_fchown);
2060         return result;
2061 #else
2062         errno = ENOSYS;
2063         return -1;
2064 #endif
2065 }
2066
2067 static int vfswrap_lchown(vfs_handle_struct *handle,
2068                         const struct smb_filename *smb_fname,
2069                         uid_t uid,
2070                         gid_t gid)
2071 {
2072         int result;
2073
2074         START_PROFILE(syscall_lchown);
2075         result = lchown(smb_fname->base_name, uid, gid);
2076         END_PROFILE(syscall_lchown);
2077         return result;
2078 }
2079
2080 static int vfswrap_chdir(vfs_handle_struct *handle,
2081                         const struct smb_filename *smb_fname)
2082 {
2083         int result;
2084
2085         START_PROFILE(syscall_chdir);
2086         result = chdir(smb_fname->base_name);
2087         END_PROFILE(syscall_chdir);
2088         return result;
2089 }
2090
2091 static struct smb_filename *vfswrap_getwd(vfs_handle_struct *handle,
2092                                 TALLOC_CTX *ctx)
2093 {
2094         char *result;
2095         struct smb_filename *smb_fname = NULL;
2096
2097         START_PROFILE(syscall_getwd);
2098         result = sys_getwd();
2099         END_PROFILE(syscall_getwd);
2100
2101         if (result == NULL) {
2102                 return NULL;
2103         }
2104         smb_fname = synthetic_smb_fname(ctx,
2105                                 result,
2106                                 NULL,
2107                                 NULL,
2108                                 0);
2109         /*
2110          * sys_getwd() *always* returns malloced memory.
2111          * We must free here to avoid leaks:
2112          * BUG:https://bugzilla.samba.org/show_bug.cgi?id=13372
2113          */
2114         SAFE_FREE(result);
2115         return smb_fname;
2116 }
2117
2118 /*********************************************************************
2119  nsec timestamp resolution call. Convert down to whatever the underlying
2120  system will support.
2121 **********************************************************************/
2122
2123 static int vfswrap_ntimes(vfs_handle_struct *handle,
2124                           const struct smb_filename *smb_fname,
2125                           struct smb_file_time *ft)
2126 {
2127         int result = -1;
2128
2129         START_PROFILE(syscall_ntimes);
2130
2131         if (smb_fname->stream_name) {
2132                 errno = ENOENT;
2133                 goto out;
2134         }
2135
2136         if (ft != NULL) {
2137                 if (null_timespec(ft->atime)) {
2138                         ft->atime= smb_fname->st.st_ex_atime;
2139                 }
2140
2141                 if (null_timespec(ft->mtime)) {
2142                         ft->mtime = smb_fname->st.st_ex_mtime;
2143                 }
2144
2145                 if (!null_timespec(ft->create_time)) {
2146                         set_create_timespec_ea(handle->conn,
2147                                                smb_fname,
2148                                                ft->create_time);
2149                 }
2150
2151                 if ((timespec_compare(&ft->atime,
2152                                       &smb_fname->st.st_ex_atime) == 0) &&
2153                     (timespec_compare(&ft->mtime,
2154                                       &smb_fname->st.st_ex_mtime) == 0)) {
2155                         return 0;
2156                 }
2157         }
2158
2159 #if defined(HAVE_UTIMENSAT)
2160         if (ft != NULL) {
2161                 struct timespec ts[2];
2162                 ts[0] = ft->atime;
2163                 ts[1] = ft->mtime;
2164                 result = utimensat(AT_FDCWD, smb_fname->base_name, ts, 0);
2165         } else {
2166                 result = utimensat(AT_FDCWD, smb_fname->base_name, NULL, 0);
2167         }
2168         if (!((result == -1) && (errno == ENOSYS))) {
2169                 goto out;
2170         }
2171 #endif
2172 #if defined(HAVE_UTIMES)
2173         if (ft != NULL) {
2174                 struct timeval tv[2];
2175                 tv[0] = convert_timespec_to_timeval(ft->atime);
2176                 tv[1] = convert_timespec_to_timeval(ft->mtime);
2177                 result = utimes(smb_fname->base_name, tv);
2178         } else {
2179                 result = utimes(smb_fname->base_name, NULL);
2180         }
2181         if (!((result == -1) && (errno == ENOSYS))) {
2182                 goto out;
2183         }
2184 #endif
2185 #if defined(HAVE_UTIME)
2186         if (ft != NULL) {
2187                 struct utimbuf times;
2188                 times.actime = convert_timespec_to_time_t(ft->atime);
2189                 times.modtime = convert_timespec_to_time_t(ft->mtime);
2190                 result = utime(smb_fname->base_name, &times);
2191         } else {
2192                 result = utime(smb_fname->base_name, NULL);
2193         }
2194         if (!((result == -1) && (errno == ENOSYS))) {
2195                 goto out;
2196         }
2197 #endif
2198         errno = ENOSYS;
2199         result = -1;
2200
2201  out:
2202         END_PROFILE(syscall_ntimes);
2203         return result;
2204 }
2205
2206 /*********************************************************************
2207  A version of ftruncate that will write the space on disk if strict
2208  allocate is set.
2209 **********************************************************************/
2210
2211 static int strict_allocate_ftruncate(vfs_handle_struct *handle, files_struct *fsp, off_t len)
2212 {
2213         off_t space_to_write;
2214         uint64_t space_avail;
2215         uint64_t bsize,dfree,dsize;
2216         int ret;
2217         NTSTATUS status;
2218         SMB_STRUCT_STAT *pst;
2219
2220         status = vfs_stat_fsp(fsp);
2221         if (!NT_STATUS_IS_OK(status)) {
2222                 return -1;
2223         }
2224         pst = &fsp->fsp_name->st;
2225
2226 #ifdef S_ISFIFO
2227         if (S_ISFIFO(pst->st_ex_mode))
2228                 return 0;
2229 #endif
2230
2231         if (pst->st_ex_size == len)
2232                 return 0;
2233
2234         /* Shrink - just ftruncate. */
2235         if (pst->st_ex_size > len)
2236                 return ftruncate(fsp->fh->fd, len);
2237
2238         space_to_write = len - pst->st_ex_size;
2239
2240         /* for allocation try fallocate first. This can fail on some
2241            platforms e.g. when the filesystem doesn't support it and no
2242            emulation is being done by the libc (like on AIX with JFS1). In that
2243            case we do our own emulation. fallocate implementations can
2244            return ENOTSUP or EINVAL in cases like that. */
2245         ret = SMB_VFS_FALLOCATE(fsp, 0, pst->st_ex_size, space_to_write);
2246         if (ret == -1 && errno == ENOSPC) {
2247                 return -1;
2248         }
2249         if (ret == 0) {
2250                 return 0;
2251         }
2252         DEBUG(10,("strict_allocate_ftruncate: SMB_VFS_FALLOCATE failed with "
2253                 "error %d. Falling back to slow manual allocation\n", errno));
2254
2255         /* available disk space is enough or not? */
2256         space_avail =
2257             get_dfree_info(fsp->conn, fsp->fsp_name, &bsize, &dfree, &dsize);
2258         /* space_avail is 1k blocks */
2259         if (space_avail == (uint64_t)-1 ||
2260                         ((uint64_t)space_to_write/1024 > space_avail) ) {
2261                 errno = ENOSPC;
2262                 return -1;
2263         }
2264
2265         /* Write out the real space on disk. */
2266         ret = vfs_slow_fallocate(fsp, pst->st_ex_size, space_to_write);
2267         if (ret != 0) {
2268                 return -1;
2269         }
2270
2271         return 0;
2272 }
2273
2274 static int vfswrap_ftruncate(vfs_handle_struct *handle, files_struct *fsp, off_t len)
2275 {
2276         int result = -1;
2277         SMB_STRUCT_STAT *pst;
2278         NTSTATUS status;
2279         char c = 0;
2280
2281         START_PROFILE(syscall_ftruncate);
2282
2283         if (lp_strict_allocate(SNUM(fsp->conn)) && !fsp->is_sparse) {
2284                 result = strict_allocate_ftruncate(handle, fsp, len);
2285                 END_PROFILE(syscall_ftruncate);
2286                 return result;
2287         }
2288
2289         /* we used to just check HAVE_FTRUNCATE_EXTEND and only use
2290            ftruncate if the system supports it. Then I discovered that
2291            you can have some filesystems that support ftruncate
2292            expansion and some that don't! On Linux fat can't do
2293            ftruncate extend but ext2 can. */
2294
2295         result = ftruncate(fsp->fh->fd, len);
2296
2297         /* According to W. R. Stevens advanced UNIX prog. Pure 4.3 BSD cannot
2298            extend a file with ftruncate. Provide alternate implementation
2299            for this */
2300
2301         /* Do an fstat to see if the file is longer than the requested
2302            size in which case the ftruncate above should have
2303            succeeded or shorter, in which case seek to len - 1 and
2304            write 1 byte of zero */
2305         status = vfs_stat_fsp(fsp);
2306         if (!NT_STATUS_IS_OK(status)) {
2307                 goto done;
2308         }
2309
2310         /* We need to update the files_struct after successful ftruncate */
2311         if (result == 0) {
2312                 goto done;
2313         }
2314
2315         pst = &fsp->fsp_name->st;
2316
2317 #ifdef S_ISFIFO
2318         if (S_ISFIFO(pst->st_ex_mode)) {
2319                 result = 0;
2320                 goto done;
2321         }
2322 #endif
2323
2324         if (pst->st_ex_size == len) {
2325                 result = 0;
2326                 goto done;
2327         }
2328
2329         if (pst->st_ex_size > len) {
2330                 /* the ftruncate should have worked */
2331                 goto done;
2332         }
2333
2334         if (SMB_VFS_PWRITE(fsp, &c, 1, len-1)!=1) {
2335                 goto done;
2336         }
2337
2338         result = 0;
2339
2340   done:
2341
2342         END_PROFILE(syscall_ftruncate);
2343         return result;
2344 }
2345
2346 static int vfswrap_fallocate(vfs_handle_struct *handle,
2347                         files_struct *fsp,
2348                         uint32_t mode,
2349                         off_t offset,
2350                         off_t len)
2351 {
2352         int result;
2353
2354         START_PROFILE(syscall_fallocate);
2355         if (mode == 0) {
2356                 result = sys_posix_fallocate(fsp->fh->fd, offset, len);
2357                 /*
2358                  * posix_fallocate returns 0 on success, errno on error
2359                  * and doesn't set errno. Make it behave like fallocate()
2360                  * which returns -1, and sets errno on failure.
2361                  */
2362                 if (result != 0) {
2363                         errno = result;
2364                         result = -1;
2365                 }
2366         } else {
2367                 /* sys_fallocate handles filtering of unsupported mode flags */
2368                 result = sys_fallocate(fsp->fh->fd, mode, offset, len);
2369         }
2370         END_PROFILE(syscall_fallocate);
2371         return result;
2372 }
2373
2374 static bool vfswrap_lock(vfs_handle_struct *handle, files_struct *fsp, int op, off_t offset, off_t count, int type)
2375 {
2376         bool result;
2377
2378         START_PROFILE(syscall_fcntl_lock);
2379
2380         if (fsp->use_ofd_locks || !lp_parm_bool(SNUM(fsp->conn),
2381                                                 "smbd",
2382                                                 "force process locks",
2383                                                 false)) {
2384                 op = map_process_lock_to_ofd_lock(op, &fsp->use_ofd_locks);
2385         }
2386
2387         result =  fcntl_lock(fsp->fh->fd, op, offset, count, type);
2388         END_PROFILE(syscall_fcntl_lock);
2389         return result;
2390 }
2391
2392 static int vfswrap_kernel_flock(vfs_handle_struct *handle, files_struct *fsp,
2393                                 uint32_t share_mode, uint32_t access_mask)
2394 {
2395         START_PROFILE(syscall_kernel_flock);
2396         kernel_flock(fsp->fh->fd, share_mode, access_mask);
2397         END_PROFILE(syscall_kernel_flock);
2398         return 0;
2399 }
2400
2401 static bool vfswrap_getlock(vfs_handle_struct *handle, files_struct *fsp, off_t *poffset, off_t *pcount, int *ptype, pid_t *ppid)
2402 {
2403         bool result;
2404         int op = F_GETLK;
2405
2406         START_PROFILE(syscall_fcntl_getlock);
2407
2408         if (fsp->use_ofd_locks || !lp_parm_bool(SNUM(fsp->conn),
2409                                                 "smbd",
2410                                                 "force process locks",
2411                                                 false)) {
2412                 op = map_process_lock_to_ofd_lock(op, &fsp->use_ofd_locks);
2413         }
2414
2415         result = fcntl_getlock(fsp->fh->fd, op, poffset, pcount, ptype, ppid);
2416         END_PROFILE(syscall_fcntl_getlock);
2417         return result;
2418 }
2419
2420 static int vfswrap_linux_setlease(vfs_handle_struct *handle, files_struct *fsp,
2421                                 int leasetype)
2422 {
2423         int result = -1;
2424
2425         START_PROFILE(syscall_linux_setlease);
2426
2427 #ifdef HAVE_KERNEL_OPLOCKS_LINUX
2428         result = linux_setlease(fsp->fh->fd, leasetype);
2429 #else
2430         errno = ENOSYS;
2431 #endif
2432         END_PROFILE(syscall_linux_setlease);
2433         return result;
2434 }
2435
2436 static int vfswrap_symlink(vfs_handle_struct *handle,
2437                         const char *link_target,
2438                         const struct smb_filename *new_smb_fname)
2439 {
2440         int result;
2441
2442         START_PROFILE(syscall_symlink);
2443         result = symlink(link_target, new_smb_fname->base_name);
2444         END_PROFILE(syscall_symlink);
2445         return result;
2446 }
2447
2448 static int vfswrap_readlink(vfs_handle_struct *handle,
2449                         const struct smb_filename *smb_fname,
2450                         char *buf,
2451                         size_t bufsiz)
2452 {
2453         int result;
2454
2455         START_PROFILE(syscall_readlink);
2456         result = readlink(smb_fname->base_name, buf, bufsiz);
2457         END_PROFILE(syscall_readlink);
2458         return result;
2459 }
2460
2461 static int vfswrap_link(vfs_handle_struct *handle,
2462                         const struct smb_filename *old_smb_fname,
2463                         const struct smb_filename *new_smb_fname)
2464 {
2465         int result;
2466
2467         START_PROFILE(syscall_link);
2468         result = link(old_smb_fname->base_name, new_smb_fname->base_name);
2469         END_PROFILE(syscall_link);
2470         return result;
2471 }
2472
2473 static int vfswrap_mknod(vfs_handle_struct *handle,
2474                         const struct smb_filename *smb_fname,
2475                         mode_t mode,
2476                         SMB_DEV_T dev)
2477 {
2478         int result;
2479
2480         START_PROFILE(syscall_mknod);
2481         result = sys_mknod(smb_fname->base_name, mode, dev);
2482         END_PROFILE(syscall_mknod);
2483         return result;
2484 }
2485
2486 static struct smb_filename *vfswrap_realpath(vfs_handle_struct *handle,
2487                         TALLOC_CTX *ctx,
2488                         const struct smb_filename *smb_fname)
2489 {
2490         char *result;
2491         struct smb_filename *result_fname = NULL;
2492
2493         START_PROFILE(syscall_realpath);
2494         result = sys_realpath(smb_fname->base_name);
2495         END_PROFILE(syscall_realpath);
2496         if (result) {
2497                 result_fname = synthetic_smb_fname(ctx, result, NULL, NULL, 0);
2498                 SAFE_FREE(result);
2499         }
2500         return result_fname;
2501 }
2502
2503 static int vfswrap_chflags(vfs_handle_struct *handle,
2504                         const struct smb_filename *smb_fname,
2505                         unsigned int flags)
2506 {
2507 #ifdef HAVE_CHFLAGS
2508         return chflags(smb_fname->base_name, flags);
2509 #else
2510         errno = ENOSYS;
2511         return -1;
2512 #endif
2513 }
2514
2515 static struct file_id vfswrap_file_id_create(struct vfs_handle_struct *handle,
2516                                              const SMB_STRUCT_STAT *sbuf)
2517 {
2518         struct file_id key;
2519
2520         /* the ZERO_STRUCT ensures padding doesn't break using the key as a
2521          * blob */
2522         ZERO_STRUCT(key);
2523
2524         key.devid = sbuf->st_ex_dev;
2525         key.inode = sbuf->st_ex_ino;
2526         /* key.extid is unused by default. */
2527
2528         return key;
2529 }
2530
2531 static NTSTATUS vfswrap_streaminfo(vfs_handle_struct *handle,
2532                                    struct files_struct *fsp,
2533                                    const struct smb_filename *smb_fname,
2534                                    TALLOC_CTX *mem_ctx,
2535                                    unsigned int *pnum_streams,
2536                                    struct stream_struct **pstreams)
2537 {
2538         SMB_STRUCT_STAT sbuf;
2539         struct stream_struct *tmp_streams = NULL;
2540         int ret;
2541
2542         if ((fsp != NULL) && (fsp->is_directory)) {
2543                 /*
2544                  * No default streams on directories
2545                  */
2546                 goto done;
2547         }
2548
2549         if ((fsp != NULL) && (fsp->fh->fd != -1)) {
2550                 ret = SMB_VFS_FSTAT(fsp, &sbuf);
2551         }
2552         else {
2553                 struct smb_filename smb_fname_cp;
2554
2555                 ZERO_STRUCT(smb_fname_cp);
2556                 smb_fname_cp.base_name = discard_const_p(char,
2557                                         smb_fname->base_name);
2558                 smb_fname_cp.flags = smb_fname->flags;
2559
2560                 if (smb_fname_cp.flags & SMB_FILENAME_POSIX_PATH) {
2561                         ret = SMB_VFS_LSTAT(handle->conn, &smb_fname_cp);
2562                 } else {
2563                         ret = SMB_VFS_STAT(handle->conn, &smb_fname_cp);
2564                 }
2565                 sbuf = smb_fname_cp.st;
2566         }
2567
2568         if (ret == -1) {
2569                 return map_nt_error_from_unix(errno);
2570         }
2571
2572         if (S_ISDIR(sbuf.st_ex_mode)) {
2573                 goto done;
2574         }
2575
2576         tmp_streams = talloc_realloc(mem_ctx, *pstreams, struct stream_struct,
2577                                         (*pnum_streams) + 1);
2578         if (tmp_streams == NULL) {
2579                 return NT_STATUS_NO_MEMORY;
2580         }
2581         tmp_streams[*pnum_streams].name = talloc_strdup(tmp_streams, "::$DATA");
2582         if (tmp_streams[*pnum_streams].name == NULL) {
2583                 return NT_STATUS_NO_MEMORY;
2584         }
2585         tmp_streams[*pnum_streams].size = sbuf.st_ex_size;
2586         tmp_streams[*pnum_streams].alloc_size = SMB_VFS_GET_ALLOC_SIZE(handle->conn, fsp, &sbuf);
2587
2588         *pnum_streams += 1;
2589         *pstreams = tmp_streams;
2590  done:
2591         return NT_STATUS_OK;
2592 }
2593
2594 static int vfswrap_get_real_filename(struct vfs_handle_struct *handle,
2595                                      const char *path,
2596                                      const char *name,
2597                                      TALLOC_CTX *mem_ctx,
2598                                      char **found_name)
2599 {
2600         /*
2601          * Don't fall back to get_real_filename so callers can differentiate
2602          * between a full directory scan and an actual case-insensitive stat.
2603          */
2604         errno = EOPNOTSUPP;
2605         return -1;
2606 }
2607
2608 static const char *vfswrap_connectpath(struct vfs_handle_struct *handle,
2609                                    const struct smb_filename *smb_fname)
2610 {
2611         return handle->conn->connectpath;
2612 }
2613
2614 static NTSTATUS vfswrap_brl_lock_windows(struct vfs_handle_struct *handle,
2615                                          struct byte_range_lock *br_lck,
2616                                          struct lock_struct *plock,
2617                                          bool blocking_lock)
2618 {
2619         SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
2620
2621         /* Note: blr is not used in the default implementation. */
2622         return brl_lock_windows_default(br_lck, plock, blocking_lock);
2623 }
2624
2625 static bool vfswrap_brl_unlock_windows(struct vfs_handle_struct *handle,
2626                                        struct messaging_context *msg_ctx,
2627                                        struct byte_range_lock *br_lck,
2628                                        const struct lock_struct *plock)
2629 {
2630         SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
2631
2632         return brl_unlock_windows_default(msg_ctx, br_lck, plock);
2633 }
2634
2635 static bool vfswrap_brl_cancel_windows(struct vfs_handle_struct *handle,
2636                                        struct byte_range_lock *br_lck,
2637                                        struct lock_struct *plock)
2638 {
2639         SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
2640
2641         /* Note: blr is not used in the default implementation. */
2642         return brl_lock_cancel_default(br_lck, plock);
2643 }
2644
2645 static bool vfswrap_strict_lock_check(struct vfs_handle_struct *handle,
2646                                       files_struct *fsp,
2647                                       struct lock_struct *plock)
2648 {
2649         SMB_ASSERT(plock->lock_type == READ_LOCK ||
2650             plock->lock_type == WRITE_LOCK);
2651
2652         return strict_lock_check_default(fsp, plock);
2653 }
2654
2655 /* NT ACL operations. */
2656
2657 static NTSTATUS vfswrap_fget_nt_acl(vfs_handle_struct *handle,
2658                                     files_struct *fsp,
2659                                     uint32_t security_info,
2660                                     TALLOC_CTX *mem_ctx,
2661                                     struct security_descriptor **ppdesc)
2662 {
2663         NTSTATUS result;
2664
2665         START_PROFILE(fget_nt_acl);
2666         result = posix_fget_nt_acl(fsp, security_info,
2667                                    mem_ctx, ppdesc);
2668         END_PROFILE(fget_nt_acl);
2669         return result;
2670 }
2671
2672 static NTSTATUS vfswrap_get_nt_acl(vfs_handle_struct *handle,
2673                                    const struct smb_filename *smb_fname,
2674                                    uint32_t security_info,
2675                                    TALLOC_CTX *mem_ctx,
2676                                    struct security_descriptor **ppdesc)
2677 {
2678         NTSTATUS result;
2679
2680         START_PROFILE(get_nt_acl);
2681         result = posix_get_nt_acl(handle->conn,
2682                                 smb_fname,
2683                                 security_info,
2684                                 mem_ctx,
2685                                 ppdesc);
2686         END_PROFILE(get_nt_acl);
2687         return result;
2688 }
2689
2690 static NTSTATUS vfswrap_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32_t security_info_sent, const struct security_descriptor *psd)
2691 {
2692         NTSTATUS result;
2693
2694         START_PROFILE(fset_nt_acl);
2695         result = set_nt_acl(fsp, security_info_sent, psd);
2696         END_PROFILE(fset_nt_acl);
2697         return result;
2698 }
2699
2700 static NTSTATUS vfswrap_audit_file(struct vfs_handle_struct *handle,
2701                                    struct smb_filename *file,
2702                                    struct security_acl *sacl,
2703                                    uint32_t access_requested,
2704                                    uint32_t access_denied)
2705 {
2706         return NT_STATUS_OK; /* Nothing to do here ... */
2707 }
2708
2709 static SMB_ACL_T vfswrap_sys_acl_get_file(vfs_handle_struct *handle,
2710                                           const struct smb_filename *smb_fname,
2711                                           SMB_ACL_TYPE_T type,
2712                                           TALLOC_CTX *mem_ctx)
2713 {
2714         return sys_acl_get_file(handle, smb_fname, type, mem_ctx);
2715 }
2716
2717 static SMB_ACL_T vfswrap_sys_acl_get_fd(vfs_handle_struct *handle,
2718                                         files_struct *fsp,
2719                                         TALLOC_CTX *mem_ctx)
2720 {
2721         return sys_acl_get_fd(handle, fsp, mem_ctx);
2722 }
2723
2724 static int vfswrap_sys_acl_set_file(vfs_handle_struct *handle,
2725                                 const struct smb_filename *smb_fname,
2726                                 SMB_ACL_TYPE_T acltype,
2727                                 SMB_ACL_T theacl)
2728 {
2729         return sys_acl_set_file(handle, smb_fname, acltype, theacl);
2730 }
2731
2732 static int vfswrap_sys_acl_set_fd(vfs_handle_struct *handle, files_struct *fsp, SMB_ACL_T theacl)
2733 {
2734         return sys_acl_set_fd(handle, fsp, theacl);
2735 }
2736
2737 static int vfswrap_sys_acl_delete_def_file(vfs_handle_struct *handle,
2738                         const struct smb_filename *smb_fname)
2739 {
2740         return sys_acl_delete_def_file(handle, smb_fname);
2741 }
2742
2743 /****************************************************************
2744  Extended attribute operations.
2745 *****************************************************************/
2746
2747 static ssize_t vfswrap_getxattr(struct vfs_handle_struct *handle,
2748                         const struct smb_filename *smb_fname,
2749                         const char *name,
2750                         void *value,
2751                         size_t size)
2752 {
2753         return getxattr(smb_fname->base_name, name, value, size);
2754 }
2755
2756 static ssize_t vfswrap_fgetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size)
2757 {
2758         return fgetxattr(fsp->fh->fd, name, value, size);
2759 }
2760
2761 static ssize_t vfswrap_listxattr(struct vfs_handle_struct *handle,
2762                         const struct smb_filename *smb_fname,
2763                         char *list,
2764                         size_t size)
2765 {
2766         return listxattr(smb_fname->base_name, list, size);
2767 }
2768
2769 static ssize_t vfswrap_flistxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size)
2770 {
2771         return flistxattr(fsp->fh->fd, list, size);
2772 }
2773
2774 static int vfswrap_removexattr(struct vfs_handle_struct *handle,
2775                                 const struct smb_filename *smb_fname,
2776                                 const char *name)
2777 {
2778         return removexattr(smb_fname->base_name, name);
2779 }
2780
2781 static int vfswrap_fremovexattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name)
2782 {
2783         return fremovexattr(fsp->fh->fd, name);
2784 }
2785
2786 static int vfswrap_setxattr(struct vfs_handle_struct *handle,
2787                                 const struct smb_filename *smb_fname,
2788                                 const char *name,
2789                                 const void *value,
2790                                 size_t size,
2791                                 int flags)
2792 {
2793         return setxattr(smb_fname->base_name, name, value, size, flags);
2794 }
2795
2796 static int vfswrap_fsetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags)
2797 {
2798         return fsetxattr(fsp->fh->fd, name, value, size, flags);
2799 }
2800
2801 static bool vfswrap_aio_force(struct vfs_handle_struct *handle, struct files_struct *fsp)
2802 {
2803         return false;
2804 }
2805
2806 static bool vfswrap_is_offline(struct vfs_handle_struct *handle,
2807                                const struct smb_filename *fname,
2808                                SMB_STRUCT_STAT *sbuf)
2809 {
2810         NTSTATUS status;
2811         char *path;
2812         bool offline = false;
2813
2814         if (ISDOT(fname->base_name) || ISDOTDOT(fname->base_name)) {
2815                 return false;
2816         }
2817
2818         if (!lp_dmapi_support(SNUM(handle->conn)) || !dmapi_have_session()) {
2819 #if defined(ENOTSUP)
2820                 errno = ENOTSUP;
2821 #endif
2822                 return false;
2823         }
2824
2825         status = get_full_smb_filename(talloc_tos(), fname, &path);
2826         if (!NT_STATUS_IS_OK(status)) {
2827                 errno = map_errno_from_nt_status(status);
2828                 return false;
2829         }
2830
2831         offline = (dmapi_file_flags(path) & FILE_ATTRIBUTE_OFFLINE) != 0;
2832
2833         TALLOC_FREE(path);
2834
2835         return offline;
2836 }
2837
2838 static NTSTATUS vfswrap_durable_cookie(struct vfs_handle_struct *handle,
2839                                        struct files_struct *fsp,
2840                                        TALLOC_CTX *mem_ctx,
2841                                        DATA_BLOB *cookie)
2842 {
2843         return vfs_default_durable_cookie(fsp, mem_ctx, cookie);
2844 }
2845
2846 static NTSTATUS vfswrap_durable_disconnect(struct vfs_handle_struct *handle,
2847                                            struct files_struct *fsp,
2848                                            const DATA_BLOB old_cookie,
2849                                            TALLOC_CTX *mem_ctx,
2850                                            DATA_BLOB *new_cookie)
2851 {
2852         return vfs_default_durable_disconnect(fsp, old_cookie, mem_ctx,
2853                                               new_cookie);
2854 }
2855
2856 static NTSTATUS vfswrap_durable_reconnect(struct vfs_handle_struct *handle,
2857                                           struct smb_request *smb1req,
2858                                           struct smbXsrv_open *op,
2859                                           const DATA_BLOB old_cookie,
2860                                           TALLOC_CTX *mem_ctx,
2861                                           struct files_struct **fsp,
2862                                           DATA_BLOB *new_cookie)
2863 {
2864         return vfs_default_durable_reconnect(handle->conn, smb1req, op,
2865                                              old_cookie, mem_ctx,
2866                                              fsp, new_cookie);
2867 }
2868
2869 static struct vfs_fn_pointers vfs_default_fns = {
2870         /* Disk operations */
2871
2872         .connect_fn = vfswrap_connect,
2873         .disconnect_fn = vfswrap_disconnect,
2874         .disk_free_fn = vfswrap_disk_free,
2875         .get_quota_fn = vfswrap_get_quota,
2876         .set_quota_fn = vfswrap_set_quota,
2877         .get_shadow_copy_data_fn = vfswrap_get_shadow_copy_data,
2878         .statvfs_fn = vfswrap_statvfs,
2879         .fs_capabilities_fn = vfswrap_fs_capabilities,
2880         .get_dfs_referrals_fn = vfswrap_get_dfs_referrals,
2881         .snap_check_path_fn = vfswrap_snap_check_path,
2882         .snap_create_fn = vfswrap_snap_create,
2883         .snap_delete_fn = vfswrap_snap_delete,
2884
2885         /* Directory operations */
2886
2887         .opendir_fn = vfswrap_opendir,
2888         .fdopendir_fn = vfswrap_fdopendir,
2889         .readdir_fn = vfswrap_readdir,
2890         .readdir_attr_fn = vfswrap_readdir_attr,
2891         .seekdir_fn = vfswrap_seekdir,
2892         .telldir_fn = vfswrap_telldir,
2893         .rewind_dir_fn = vfswrap_rewinddir,
2894         .mkdir_fn = vfswrap_mkdir,
2895         .rmdir_fn = vfswrap_rmdir,
2896         .closedir_fn = vfswrap_closedir,
2897
2898         /* File operations */
2899
2900         .open_fn = vfswrap_open,
2901         .create_file_fn = vfswrap_create_file,
2902         .close_fn = vfswrap_close,
2903         .pread_fn = vfswrap_pread,
2904         .pread_send_fn = vfswrap_pread_send,
2905         .pread_recv_fn = vfswrap_pread_recv,
2906         .pwrite_fn = vfswrap_pwrite,
2907         .pwrite_send_fn = vfswrap_pwrite_send,
2908         .pwrite_recv_fn = vfswrap_pwrite_recv,
2909         .lseek_fn = vfswrap_lseek,
2910         .sendfile_fn = vfswrap_sendfile,
2911         .recvfile_fn = vfswrap_recvfile,
2912         .rename_fn = vfswrap_rename,
2913         .fsync_send_fn = vfswrap_fsync_send,
2914         .fsync_recv_fn = vfswrap_fsync_recv,
2915         .stat_fn = vfswrap_stat,
2916         .fstat_fn = vfswrap_fstat,
2917         .lstat_fn = vfswrap_lstat,
2918         .get_alloc_size_fn = vfswrap_get_alloc_size,
2919         .unlink_fn = vfswrap_unlink,
2920         .chmod_fn = vfswrap_chmod,
2921         .fchmod_fn = vfswrap_fchmod,
2922         .chown_fn = vfswrap_chown,
2923         .fchown_fn = vfswrap_fchown,
2924         .lchown_fn = vfswrap_lchown,
2925         .chdir_fn = vfswrap_chdir,
2926         .getwd_fn = vfswrap_getwd,
2927         .ntimes_fn = vfswrap_ntimes,
2928         .ftruncate_fn = vfswrap_ftruncate,
2929         .fallocate_fn = vfswrap_fallocate,
2930         .lock_fn = vfswrap_lock,
2931         .kernel_flock_fn = vfswrap_kernel_flock,
2932         .linux_setlease_fn = vfswrap_linux_setlease,
2933         .getlock_fn = vfswrap_getlock,
2934         .symlink_fn = vfswrap_symlink,
2935         .readlink_fn = vfswrap_readlink,
2936         .link_fn = vfswrap_link,
2937         .mknod_fn = vfswrap_mknod,
2938         .realpath_fn = vfswrap_realpath,
2939         .chflags_fn = vfswrap_chflags,
2940         .file_id_create_fn = vfswrap_file_id_create,
2941         .streaminfo_fn = vfswrap_streaminfo,
2942         .get_real_filename_fn = vfswrap_get_real_filename,
2943         .connectpath_fn = vfswrap_connectpath,
2944         .brl_lock_windows_fn = vfswrap_brl_lock_windows,
2945         .brl_unlock_windows_fn = vfswrap_brl_unlock_windows,
2946         .brl_cancel_windows_fn = vfswrap_brl_cancel_windows,
2947         .strict_lock_check_fn = vfswrap_strict_lock_check,
2948         .translate_name_fn = vfswrap_translate_name,
2949         .fsctl_fn = vfswrap_fsctl,
2950         .set_dos_attributes_fn = vfswrap_set_dos_attributes,
2951         .fset_dos_attributes_fn = vfswrap_fset_dos_attributes,
2952         .get_dos_attributes_fn = vfswrap_get_dos_attributes,
2953         .fget_dos_attributes_fn = vfswrap_fget_dos_attributes,
2954         .offload_read_send_fn = vfswrap_offload_read_send,
2955         .offload_read_recv_fn = vfswrap_offload_read_recv,
2956         .offload_write_send_fn = vfswrap_offload_write_send,
2957         .offload_write_recv_fn = vfswrap_offload_write_recv,
2958         .get_compression_fn = vfswrap_get_compression,
2959         .set_compression_fn = vfswrap_set_compression,
2960
2961         /* NT ACL operations. */
2962
2963         .fget_nt_acl_fn = vfswrap_fget_nt_acl,
2964         .get_nt_acl_fn = vfswrap_get_nt_acl,
2965         .fset_nt_acl_fn = vfswrap_fset_nt_acl,
2966         .audit_file_fn = vfswrap_audit_file,
2967
2968         /* POSIX ACL operations. */
2969
2970         .sys_acl_get_file_fn = vfswrap_sys_acl_get_file,
2971         .sys_acl_get_fd_fn = vfswrap_sys_acl_get_fd,
2972         .sys_acl_blob_get_file_fn = posix_sys_acl_blob_get_file,
2973         .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
2974         .sys_acl_set_file_fn = vfswrap_sys_acl_set_file,
2975         .sys_acl_set_fd_fn = vfswrap_sys_acl_set_fd,
2976         .sys_acl_delete_def_file_fn = vfswrap_sys_acl_delete_def_file,
2977
2978         /* EA operations. */
2979         .getxattr_fn = vfswrap_getxattr,
2980         .fgetxattr_fn = vfswrap_fgetxattr,
2981         .listxattr_fn = vfswrap_listxattr,
2982         .flistxattr_fn = vfswrap_flistxattr,
2983         .removexattr_fn = vfswrap_removexattr,
2984         .fremovexattr_fn = vfswrap_fremovexattr,
2985         .setxattr_fn = vfswrap_setxattr,
2986         .fsetxattr_fn = vfswrap_fsetxattr,
2987
2988         /* aio operations */
2989         .aio_force_fn = vfswrap_aio_force,
2990
2991         /* durable handle operations */
2992         .durable_cookie_fn = vfswrap_durable_cookie,
2993         .durable_disconnect_fn = vfswrap_durable_disconnect,
2994         .durable_reconnect_fn = vfswrap_durable_reconnect,
2995 };
2996
2997 static_decl_vfs;
2998 NTSTATUS vfs_default_init(TALLOC_CTX *ctx)
2999 {
3000         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
3001                                 DEFAULT_VFS_MODULE_NAME, &vfs_default_fns);
3002 }
3003
3004