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                                     const 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 (ret != 0) {
 746                 if (ret != EAGAIN) {
 747                         tevent_req_error(req, ret);
 748                         return;
 749                 }
 750                 /*
 751                  * If we get EAGAIN from pthreadpool_tevent_job_recv() this
 752                  * means the lower level pthreadpool failed to create a new
 753                  * thread. Fallback to sync processing in that case to allow
 754                  * some progress for the client.
 755                  */
 756                 vfs_pread_do(state);
 757         }
 758
 759         tevent_req_done(req);
 760 }
 761
 762 static ssize_t vfswrap_pread_recv(struct tevent_req *req,
 763                                   struct vfs_aio_state *vfs_aio_state)
 764 {
 765         struct vfswrap_pread_state *state = tevent_req_data(
 766                 req, struct vfswrap_pread_state);
 767
 768         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
 769                 return -1;
 770         }
 771
 772         *vfs_aio_state = state->vfs_aio_state;
 773         return state->ret;
 774 }
 775
 776 struct vfswrap_pwrite_state {
 777         ssize_t ret;
 778         int fd;
 779         const void *buf;
 780         size_t count;
 781         off_t offset;
 782
 783         struct vfs_aio_state vfs_aio_state;
 784         SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
 785 };
 786
 787 static void vfs_pwrite_do(void *private_data);
 788 static void vfs_pwrite_done(struct tevent_req *subreq);
 789 static int vfs_pwrite_state_destructor(struct vfswrap_pwrite_state *state);
 790
 791 static struct tevent_req *vfswrap_pwrite_send(struct vfs_handle_struct *handle,
 792                                               TALLOC_CTX *mem_ctx,
 793                                               struct tevent_context *ev,
 794                                               struct files_struct *fsp,
 795                                               const void *data,
 796                                               size_t n, off_t offset)
 797 {
 798         struct tevent_req *req, *subreq;
 799         struct vfswrap_pwrite_state *state;
 800
 801         req = tevent_req_create(mem_ctx, &state, struct vfswrap_pwrite_state);
 802         if (req == NULL) {
 803                 return NULL;
 804         }
 805
 806         state->ret = -1;
 807         state->fd = fsp->fh->fd;
 808         state->buf = data;
 809         state->count = n;
 810         state->offset = offset;
 811
 812         SMBPROFILE_BYTES_ASYNC_START(syscall_asys_pwrite, profile_p,
 813                                      state->profile_bytes, n);
 814         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
 815
 816         subreq = pthreadpool_tevent_job_send(
 817                 state, ev, handle->conn->sconn->pool,
 818                 vfs_pwrite_do, state);
 819         if (tevent_req_nomem(subreq, req)) {
 820                 return tevent_req_post(req, ev);
 821         }
 822         tevent_req_set_callback(subreq, vfs_pwrite_done, req);
 823
 824         talloc_set_destructor(state, vfs_pwrite_state_destructor);
 825
 826         return req;
 827 }
 828
 829 static void vfs_pwrite_do(void *private_data)
 830 {
 831         struct vfswrap_pwrite_state *state = talloc_get_type_abort(
 832                 private_data, struct vfswrap_pwrite_state);
 833         struct timespec start_time;
 834         struct timespec end_time;
 835
 836         SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
 837
 838         PROFILE_TIMESTAMP(&start_time);
 839
 840         do {
 841                 state->ret = pwrite(state->fd, state->buf, state->count,
 842                                    state->offset);
 843         } while ((state->ret == -1) && (errno == EINTR));
 844
 845         if (state->ret == -1) {
 846                 state->vfs_aio_state.error = errno;
 847         }
 848
 849         PROFILE_TIMESTAMP(&end_time);
 850
 851         state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
 852
 853         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
 854 }
 855
 856 static int vfs_pwrite_state_destructor(struct vfswrap_pwrite_state *state)
 857 {
 858         return -1;
 859 }
 860
 861 static void vfs_pwrite_done(struct tevent_req *subreq)
 862 {
 863         struct tevent_req *req = tevent_req_callback_data(
 864                 subreq, struct tevent_req);
 865         struct vfswrap_pwrite_state *state = tevent_req_data(
 866                 req, struct vfswrap_pwrite_state);
 867         int ret;
 868
 869         ret = pthreadpool_tevent_job_recv(subreq);
 870         TALLOC_FREE(subreq);
 871         SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
 872         talloc_set_destructor(state, NULL);
 873         if (ret != 0) {
 874                 if (ret != EAGAIN) {
 875                         tevent_req_error(req, ret);
 876                         return;
 877                 }
 878                 /*
 879                  * If we get EAGAIN from pthreadpool_tevent_job_recv() this
 880                  * means the lower level pthreadpool failed to create a new
 881                  * thread. Fallback to sync processing in that case to allow
 882                  * some progress for the client.
 883                  */
 884                 vfs_pwrite_do(state);
 885         }
 886
 887         tevent_req_done(req);
 888 }
 889
 890 static ssize_t vfswrap_pwrite_recv(struct tevent_req *req,
 891                                    struct vfs_aio_state *vfs_aio_state)
 892 {
 893         struct vfswrap_pwrite_state *state = tevent_req_data(
 894                 req, struct vfswrap_pwrite_state);
 895
 896         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
 897                 return -1;
 898         }
 899
 900         *vfs_aio_state = state->vfs_aio_state;
 901         return state->ret;
 902 }
 903
 904 struct vfswrap_fsync_state {
 905         ssize_t ret;
 906         int fd;
 907
 908         struct vfs_aio_state vfs_aio_state;
 909         SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
 910 };
 911
 912 static void vfs_fsync_do(void *private_data);
 913 static void vfs_fsync_done(struct tevent_req *subreq);
 914 static int vfs_fsync_state_destructor(struct vfswrap_fsync_state *state);
 915
 916 static struct tevent_req *vfswrap_fsync_send(struct vfs_handle_struct *handle,
 917                                              TALLOC_CTX *mem_ctx,
 918                                              struct tevent_context *ev,
 919                                              struct files_struct *fsp)
 920 {
 921         struct tevent_req *req, *subreq;
 922         struct vfswrap_fsync_state *state;
 923
 924         req = tevent_req_create(mem_ctx, &state, struct vfswrap_fsync_state);
 925         if (req == NULL) {
 926                 return NULL;
 927         }
 928
 929         state->ret = -1;
 930         state->fd = fsp->fh->fd;
 931
 932         SMBPROFILE_BYTES_ASYNC_START(syscall_asys_fsync, profile_p,
 933                                      state->profile_bytes, 0);
 934         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
 935
 936         subreq = pthreadpool_tevent_job_send(
 937                 state, ev, handle->conn->sconn->pool, vfs_fsync_do, state);
 938         if (tevent_req_nomem(subreq, req)) {
 939                 return tevent_req_post(req, ev);
 940         }
 941         tevent_req_set_callback(subreq, vfs_fsync_done, req);
 942
 943         talloc_set_destructor(state, vfs_fsync_state_destructor);
 944
 945         return req;
 946 }
 947
 948 static void vfs_fsync_do(void *private_data)
 949 {
 950         struct vfswrap_fsync_state *state = talloc_get_type_abort(
 951                 private_data, struct vfswrap_fsync_state);
 952         struct timespec start_time;
 953         struct timespec end_time;
 954
 955         SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
 956
 957         PROFILE_TIMESTAMP(&start_time);
 958
 959         do {
 960                 state->ret = fsync(state->fd);
 961         } while ((state->ret == -1) && (errno == EINTR));
 962
 963         if (state->ret == -1) {
 964                 state->vfs_aio_state.error = errno;
 965         }
 966
 967         PROFILE_TIMESTAMP(&end_time);
 968
 969         state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
 970
 971         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
 972 }
 973
 974 static int vfs_fsync_state_destructor(struct vfswrap_fsync_state *state)
 975 {
 976         return -1;
 977 }
 978
 979 static void vfs_fsync_done(struct tevent_req *subreq)
 980 {
 981         struct tevent_req *req = tevent_req_callback_data(
 982                 subreq, struct tevent_req);
 983         struct vfswrap_fsync_state *state = tevent_req_data(
 984                 req, struct vfswrap_fsync_state);
 985         int ret;
 986
 987         ret = pthreadpool_tevent_job_recv(subreq);
 988         TALLOC_FREE(subreq);
 989         SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
 990         talloc_set_destructor(state, NULL);
 991         if (ret != 0) {
 992                 if (ret != EAGAIN) {
 993                         tevent_req_error(req, ret);
 994                         return;
 995                 }
 996                 /*
 997                  * If we get EAGAIN from pthreadpool_tevent_job_recv() this
 998                  * means the lower level pthreadpool failed to create a new
 999                  * thread. Fallback to sync processing in that case to allow
1000                  * some progress for the client.
1001                  */
1002                 vfs_fsync_do(state);
1003         }
1004
1005         tevent_req_done(req);
1006 }
1007
1008 static int vfswrap_fsync_recv(struct tevent_req *req,
1009                               struct vfs_aio_state *vfs_aio_state)
1010 {
1011         struct vfswrap_fsync_state *state = tevent_req_data(
1012                 req, struct vfswrap_fsync_state);
1013
1014         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
1015                 return -1;
1016         }
1017
1018         *vfs_aio_state = state->vfs_aio_state;
1019         return state->ret;
1020 }
1021
1022 static off_t vfswrap_lseek(vfs_handle_struct *handle, files_struct *fsp, off_t offset, int whence)
1023 {
1024         off_t result = 0;
1025
1026         START_PROFILE(syscall_lseek);
1027
1028         result = lseek(fsp->fh->fd, offset, whence);
1029         /*
1030          * We want to maintain the fiction that we can seek
1031          * on a fifo for file system purposes. This allows
1032          * people to set up UNIX fifo's that feed data to Windows
1033          * applications. JRA.
1034          */
1035
1036         if((result == -1) && (errno == ESPIPE)) {
1037                 result = 0;
1038                 errno = 0;
1039         }
1040
1041         END_PROFILE(syscall_lseek);
1042         return result;
1043 }
1044
1045 static ssize_t vfswrap_sendfile(vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *hdr,
1046                         off_t offset, size_t n)
1047 {
1048         ssize_t result;
1049
1050         START_PROFILE_BYTES(syscall_sendfile, n);
1051         result = sys_sendfile(tofd, fromfsp->fh->fd, hdr, offset, n);
1052         END_PROFILE_BYTES(syscall_sendfile);
1053         return result;
1054 }
1055
1056 static ssize_t vfswrap_recvfile(vfs_handle_struct *handle,
1057                         int fromfd,
1058                         files_struct *tofsp,
1059                         off_t offset,
1060                         size_t n)
1061 {
1062         ssize_t result;
1063
1064         START_PROFILE_BYTES(syscall_recvfile, n);
1065         result = sys_recvfile(fromfd, tofsp->fh->fd, offset, n);
1066         END_PROFILE_BYTES(syscall_recvfile);
1067         return result;
1068 }
1069
1070 static int vfswrap_renameat(vfs_handle_struct *handle,
1071                           files_struct *srcfsp,
1072                           const struct smb_filename *smb_fname_src,
1073                           files_struct *dstfsp,
1074                           const struct smb_filename *smb_fname_dst)
1075 {
1076         int result = -1;
1077
1078         START_PROFILE(syscall_renameat);
1079
1080         SMB_ASSERT(srcfsp->fh->fd == AT_FDCWD);
1081         SMB_ASSERT(dstfsp->fh->fd == AT_FDCWD);
1082
1083         if (smb_fname_src->stream_name || smb_fname_dst->stream_name) {
1084                 errno = ENOENT;
1085                 goto out;
1086         }
1087
1088         result = rename(smb_fname_src->base_name, smb_fname_dst->base_name);
1089
1090  out:
1091         END_PROFILE(syscall_renameat);
1092         return result;
1093 }
1094
1095 static int vfswrap_stat(vfs_handle_struct *handle,
1096                         struct smb_filename *smb_fname)
1097 {
1098         int result = -1;
1099
1100         START_PROFILE(syscall_stat);
1101
1102         if (smb_fname->stream_name) {
1103                 errno = ENOENT;
1104                 goto out;
1105         }
1106
1107         result = sys_stat(smb_fname->base_name, &smb_fname->st,
1108                           lp_fake_directory_create_times(SNUM(handle->conn)));
1109  out:
1110         END_PROFILE(syscall_stat);
1111         return result;
1112 }
1113
1114 static int vfswrap_fstat(vfs_handle_struct *handle, files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1115 {
1116         int result;
1117
1118         START_PROFILE(syscall_fstat);
1119         result = sys_fstat(fsp->fh->fd,
1120                            sbuf, lp_fake_directory_create_times(SNUM(handle->conn)));
1121         END_PROFILE(syscall_fstat);
1122         return result;
1123 }
1124
1125 static int vfswrap_lstat(vfs_handle_struct *handle,
1126                          struct smb_filename *smb_fname)
1127 {
1128         int result = -1;
1129
1130         START_PROFILE(syscall_lstat);
1131
1132         if (smb_fname->stream_name) {
1133                 errno = ENOENT;
1134                 goto out;
1135         }
1136
1137         result = sys_lstat(smb_fname->base_name, &smb_fname->st,
1138                            lp_fake_directory_create_times(SNUM(handle->conn)));
1139  out:
1140         END_PROFILE(syscall_lstat);
1141         return result;
1142 }
1143
1144 static NTSTATUS vfswrap_translate_name(struct vfs_handle_struct *handle,
1145                                        const char *name,
1146                                        enum vfs_translate_direction direction,
1147                                        TALLOC_CTX *mem_ctx,
1148                                        char **mapped_name)
1149 {
1150         return NT_STATUS_NONE_MAPPED;
1151 }
1152
1153 /*
1154  * Implement the default fsctl operation.
1155  */
1156 static bool vfswrap_logged_ioctl_message = false;
1157
1158 static NTSTATUS vfswrap_fsctl(struct vfs_handle_struct *handle,
1159                               struct files_struct *fsp,
1160                               TALLOC_CTX *ctx,
1161                               uint32_t function,
1162                               uint16_t req_flags, /* Needed for UNICODE ... */
1163                               const uint8_t *_in_data,
1164                               uint32_t in_len,
1165                               uint8_t **_out_data,
1166                               uint32_t max_out_len,
1167                               uint32_t *out_len)
1168 {
1169         const char *in_data = (const char *)_in_data;
1170         char **out_data = (char **)_out_data;
1171         NTSTATUS status;
1172
1173         switch (function) {
1174         case FSCTL_SET_SPARSE:
1175         {
1176                 bool set_sparse = true;
1177
1178                 if (in_len >= 1 && in_data[0] == 0) {
1179                         set_sparse = false;
1180                 }
1181
1182                 status = file_set_sparse(handle->conn, fsp, set_sparse);
1183
1184                 DEBUG(NT_STATUS_IS_OK(status) ? 10 : 9,
1185                       ("FSCTL_SET_SPARSE: fname[%s] set[%u] - %s\n",
1186                        smb_fname_str_dbg(fsp->fsp_name), set_sparse,
1187                        nt_errstr(status)));
1188
1189                 return status;
1190         }
1191
1192         case FSCTL_CREATE_OR_GET_OBJECT_ID:
1193         {
1194                 unsigned char objid[16];
1195                 char *return_data = NULL;
1196
1197                 /* This should return the object-id on this file.
1198                  * I think I'll make this be the inode+dev. JRA.
1199                  */
1200
1201                 DEBUG(10,("FSCTL_CREATE_OR_GET_OBJECT_ID: called on %s\n",
1202                           fsp_fnum_dbg(fsp)));
1203
1204                 *out_len = MIN(max_out_len, 64);
1205
1206                 /* Hmmm, will this cause problems if less data asked for? */
1207                 return_data = talloc_array(ctx, char, 64);
1208                 if (return_data == NULL) {
1209                         return NT_STATUS_NO_MEMORY;
1210                 }
1211
1212                 /* For backwards compatibility only store the dev/inode. */
1213                 push_file_id_16(return_data, &fsp->file_id);
1214                 memcpy(return_data+16,create_volume_objectid(fsp->conn,objid),16);
1215                 push_file_id_16(return_data+32, &fsp->file_id);
1216                 memset(return_data+48, 0, 16);
1217                 *out_data = return_data;
1218                 return NT_STATUS_OK;
1219         }
1220
1221         case FSCTL_GET_REPARSE_POINT:
1222         {
1223                 /* Fail it with STATUS_NOT_A_REPARSE_POINT */
1224                 DEBUG(10, ("FSCTL_GET_REPARSE_POINT: called on %s. "
1225                            "Status: NOT_IMPLEMENTED\n", fsp_fnum_dbg(fsp)));
1226                 return NT_STATUS_NOT_A_REPARSE_POINT;
1227         }
1228
1229         case FSCTL_SET_REPARSE_POINT:
1230         {
1231                 /* Fail it with STATUS_NOT_A_REPARSE_POINT */
1232                 DEBUG(10, ("FSCTL_SET_REPARSE_POINT: called on %s. "
1233                            "Status: NOT_IMPLEMENTED\n", fsp_fnum_dbg(fsp)));
1234                 return NT_STATUS_NOT_A_REPARSE_POINT;
1235         }
1236
1237         case FSCTL_GET_SHADOW_COPY_DATA:
1238         {
1239                 /*
1240                  * This is called to retrieve the number of Shadow Copies (a.k.a. snapshots)
1241                  * and return their volume names.  If max_data_count is 16, then it is just
1242                  * asking for the number of volumes and length of the combined names.
1243                  *
1244                  * pdata is the data allocated by our caller, but that uses
1245                  * total_data_count (which is 0 in our case) rather than max_data_count.
1246                  * Allocate the correct amount and return the pointer to let
1247                  * it be deallocated when we return.
1248                  */
1249                 struct shadow_copy_data *shadow_data = NULL;
1250                 bool labels = False;
1251                 uint32_t labels_data_count = 0;
1252                 uint32_t i;
1253                 char *cur_pdata = NULL;
1254
1255                 if (max_out_len < 16) {
1256                         DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: max_data_count(%u) < 16 is invalid!\n",
1257                                 max_out_len));
1258                         return NT_STATUS_INVALID_PARAMETER;
1259                 }
1260
1261                 if (max_out_len > 16) {
1262                         labels = True;
1263                 }
1264
1265                 shadow_data = talloc_zero(ctx, struct shadow_copy_data);
1266                 if (shadow_data == NULL) {
1267                         DEBUG(0,("TALLOC_ZERO() failed!\n"));
1268                         return NT_STATUS_NO_MEMORY;
1269                 }
1270
1271                 /*
1272                  * Call the VFS routine to actually do the work.
1273                  */
1274                 if (SMB_VFS_GET_SHADOW_COPY_DATA(fsp, shadow_data, labels)!=0) {
1275                         int log_lev = 0;
1276                         if (errno == 0) {
1277                                 /* broken module didn't set errno on error */
1278                                 status = NT_STATUS_UNSUCCESSFUL;
1279                         } else {
1280                                 status = map_nt_error_from_unix(errno);
1281                                 if (NT_STATUS_EQUAL(status,
1282                                                     NT_STATUS_NOT_SUPPORTED)) {
1283                                         log_lev = 5;
1284                                 }
1285                         }
1286                         DEBUG(log_lev, ("FSCTL_GET_SHADOW_COPY_DATA: "
1287                                         "connectpath %s, failed - %s.\n",
1288                                         fsp->conn->connectpath,
1289                                         nt_errstr(status)));
1290                         TALLOC_FREE(shadow_data);
1291                         return status;
1292                 }
1293
1294                 labels_data_count = (shadow_data->num_volumes * 2 *
1295                                         sizeof(SHADOW_COPY_LABEL)) + 2;
1296
1297                 if (!labels) {
1298                         *out_len = 16;
1299                 } else {
1300                         *out_len = 12 + labels_data_count;
1301                 }
1302
1303                 if (max_out_len < *out_len) {
1304                         DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: max_data_count(%u) too small (%u) bytes needed!\n",
1305                                 max_out_len, *out_len));
1306                         TALLOC_FREE(shadow_data);
1307                         return NT_STATUS_BUFFER_TOO_SMALL;
1308                 }
1309
1310                 cur_pdata = talloc_zero_array(ctx, char, *out_len);
1311                 if (cur_pdata == NULL) {
1312                         TALLOC_FREE(shadow_data);
1313                         return NT_STATUS_NO_MEMORY;
1314                 }
1315
1316                 *out_data = cur_pdata;
1317
1318                 /* num_volumes 4 bytes */
1319                 SIVAL(cur_pdata, 0, shadow_data->num_volumes);
1320
1321                 if (labels) {
1322                         /* num_labels 4 bytes */
1323                         SIVAL(cur_pdata, 4, shadow_data->num_volumes);
1324                 }
1325
1326                 /* needed_data_count 4 bytes */
1327                 SIVAL(cur_pdata, 8, labels_data_count);
1328
1329                 cur_pdata += 12;
1330
1331                 DEBUG(10,("FSCTL_GET_SHADOW_COPY_DATA: %u volumes for path[%s].\n",
1332                           shadow_data->num_volumes, fsp_str_dbg(fsp)));
1333                 if (labels && shadow_data->labels) {
1334                         for (i=0; i<shadow_data->num_volumes; i++) {
1335                                 size_t len = 0;
1336                                 status = srvstr_push(cur_pdata, req_flags,
1337                                             cur_pdata, shadow_data->labels[i],
1338                                             2 * sizeof(SHADOW_COPY_LABEL),
1339                                             STR_UNICODE|STR_TERMINATE, &len);
1340                                 if (!NT_STATUS_IS_OK(status)) {
1341                                         TALLOC_FREE(*out_data);
1342                                         TALLOC_FREE(shadow_data);
1343                                         return status;
1344                                 }
1345                                 cur_pdata += 2 * sizeof(SHADOW_COPY_LABEL);
1346                                 DEBUGADD(10,("Label[%u]: '%s'\n",i,shadow_data->labels[i]));
1347                         }
1348                 }
1349
1350                 TALLOC_FREE(shadow_data);
1351
1352                 return NT_STATUS_OK;
1353         }
1354
1355         case FSCTL_FIND_FILES_BY_SID:
1356         {
1357                 /* pretend this succeeded -
1358                  *
1359                  * we have to send back a list with all files owned by this SID
1360                  *
1361                  * but I have to check that --metze
1362                  */
1363                 ssize_t ret;
1364                 struct dom_sid sid;
1365                 struct dom_sid_buf buf;
1366                 uid_t uid;
1367                 size_t sid_len;
1368
1369                 DEBUG(10, ("FSCTL_FIND_FILES_BY_SID: called on %s\n",
1370                            fsp_fnum_dbg(fsp)));
1371
1372                 if (in_len < 8) {
1373                         /* NT_STATUS_BUFFER_TOO_SMALL maybe? */
1374                         return NT_STATUS_INVALID_PARAMETER;
1375                 }
1376
1377                 sid_len = MIN(in_len - 4,SID_MAX_SIZE);
1378
1379                 /* unknown 4 bytes: this is not the length of the sid :-(  */
1380                 /*unknown = IVAL(pdata,0);*/
1381
1382                 ret = sid_parse(_in_data + 4, sid_len, &sid);
1383                 if (ret == -1) {
1384                         return NT_STATUS_INVALID_PARAMETER;
1385                 }
1386                 DEBUGADD(10, ("for SID: %s\n",
1387                               dom_sid_str_buf(&sid, &buf)));
1388
1389                 if (!sid_to_uid(&sid, &uid)) {
1390                         DEBUG(0,("sid_to_uid: failed, sid[%s] sid_len[%lu]\n",
1391                                  dom_sid_str_buf(&sid, &buf),
1392                                  (unsigned long)sid_len));
1393                         uid = (-1);
1394                 }
1395
1396                 /* we can take a look at the find source :-)
1397                  *
1398                  * find ./ -uid $uid  -name '*'   is what we need here
1399                  *
1400                  *
1401                  * and send 4bytes len and then NULL terminated unicode strings
1402                  * for each file
1403                  *
1404                  * but I don't know how to deal with the paged results
1405                  * (maybe we can hang the result anywhere in the fsp struct)
1406                  *
1407                  * but I don't know how to deal with the paged results
1408                  * (maybe we can hang the result anywhere in the fsp struct)
1409                  *
1410                  * we don't send all files at once
1411                  * and at the next we should *not* start from the beginning,
1412                  * so we have to cache the result
1413                  *
1414                  * --metze
1415                  */
1416
1417                 /* this works for now... */
1418                 return NT_STATUS_OK;
1419         }
1420
1421         case FSCTL_QUERY_ALLOCATED_RANGES:
1422         {
1423                 /* FIXME: This is just a dummy reply, telling that all of the
1424                  * file is allocated. MKS cp needs that.
1425                  * Adding the real allocated ranges via FIEMAP on Linux
1426                  * and SEEK_DATA/SEEK_HOLE on Solaris is needed to make
1427                  * this FSCTL correct for sparse files.
1428                  */
1429                 uint64_t offset, length;
1430                 char *out_data_tmp = NULL;
1431
1432                 if (in_len != 16) {
1433                         DEBUG(0,("FSCTL_QUERY_ALLOCATED_RANGES: data_count(%u) != 16 is invalid!\n",
1434                                 in_len));
1435                         return NT_STATUS_INVALID_PARAMETER;
1436                 }
1437
1438                 if (max_out_len < 16) {
1439                         DEBUG(0,("FSCTL_QUERY_ALLOCATED_RANGES: max_out_len (%u) < 16 is invalid!\n",
1440                                 max_out_len));
1441                         return NT_STATUS_INVALID_PARAMETER;
1442                 }
1443
1444                 offset = BVAL(in_data,0);
1445                 length = BVAL(in_data,8);
1446
1447                 if (offset + length < offset) {
1448                         /* No 64-bit integer wrap. */
1449                         return NT_STATUS_INVALID_PARAMETER;
1450                 }
1451
1452                 /* Shouldn't this be SMB_VFS_STAT ... ? */
1453                 status = vfs_stat_fsp(fsp);
1454                 if (!NT_STATUS_IS_OK(status)) {
1455                         return status;
1456                 }
1457
1458                 *out_len = 16;
1459                 out_data_tmp = talloc_array(ctx, char, *out_len);
1460                 if (out_data_tmp == NULL) {
1461                         DEBUG(10, ("unable to allocate memory for response\n"));
1462                         return NT_STATUS_NO_MEMORY;
1463                 }
1464
1465                 if (offset > fsp->fsp_name->st.st_ex_size ||
1466                                 fsp->fsp_name->st.st_ex_size == 0 ||
1467                                 length == 0) {
1468                         memset(out_data_tmp, 0, *out_len);
1469                 } else {
1470                         uint64_t end = offset + length;
1471                         end = MIN(end, fsp->fsp_name->st.st_ex_size);
1472                         SBVAL(out_data_tmp, 0, 0);
1473                         SBVAL(out_data_tmp, 8, end);
1474                 }
1475
1476                 *out_data = out_data_tmp;
1477
1478                 return NT_STATUS_OK;
1479         }
1480
1481         case FSCTL_IS_VOLUME_DIRTY:
1482         {
1483                 DEBUG(10,("FSCTL_IS_VOLUME_DIRTY: called on %s "
1484                           "(but remotely not supported)\n", fsp_fnum_dbg(fsp)));
1485                 /*
1486                  * http://msdn.microsoft.com/en-us/library/cc232128%28PROT.10%29.aspx
1487                  * says we have to respond with NT_STATUS_INVALID_PARAMETER
1488                  */
1489                 return NT_STATUS_INVALID_PARAMETER;
1490         }
1491
1492         default:
1493                 /*
1494                  * Only print once ... unfortunately there could be lots of
1495                  * different FSCTLs that are called.
1496                  */
1497                 if (!vfswrap_logged_ioctl_message) {
1498                         vfswrap_logged_ioctl_message = true;
1499                         DEBUG(2, ("%s (0x%x): Currently not implemented.\n",
1500                         __func__, function));
1501                 }
1502         }
1503
1504         return NT_STATUS_NOT_SUPPORTED;
1505 }
1506
1507 static bool vfswrap_is_offline(struct vfs_handle_struct *handle,
1508                                const struct smb_filename *fname,
1509                                SMB_STRUCT_STAT *sbuf);
1510
1511 static NTSTATUS vfswrap_get_dos_attributes(struct vfs_handle_struct *handle,
1512                                            struct smb_filename *smb_fname,
1513                                            uint32_t *dosmode)
1514 {
1515         bool offline;
1516
1517         offline = vfswrap_is_offline(handle, smb_fname, &smb_fname->st);
1518         if (offline) {
1519                 *dosmode |= FILE_ATTRIBUTE_OFFLINE;
1520         }
1521
1522         return get_ea_dos_attribute(handle->conn, smb_fname, dosmode);
1523 }
1524
1525 struct vfswrap_get_dos_attributes_state {
1526         struct vfs_aio_state aio_state;
1527         connection_struct *conn;
1528         TALLOC_CTX *mem_ctx;
1529         struct tevent_context *ev;
1530         files_struct *dir_fsp;
1531         struct smb_filename *smb_fname;
1532         uint32_t dosmode;
1533         bool as_root;
1534 };
1535
1536 static void vfswrap_get_dos_attributes_getxattr_done(struct tevent_req *subreq);
1537
1538 static struct tevent_req *vfswrap_get_dos_attributes_send(
1539                         TALLOC_CTX *mem_ctx,
1540                         struct tevent_context *ev,
1541                         struct vfs_handle_struct *handle,
1542                         files_struct *dir_fsp,
1543                         struct smb_filename *smb_fname)
1544 {
1545         struct tevent_req *req = NULL;
1546         struct tevent_req *subreq = NULL;
1547         struct vfswrap_get_dos_attributes_state *state = NULL;
1548
1549         req = tevent_req_create(mem_ctx, &state,
1550                                 struct vfswrap_get_dos_attributes_state);
1551         if (req == NULL) {
1552                 return NULL;
1553         }
1554
1555         *state = (struct vfswrap_get_dos_attributes_state) {
1556                 .conn = dir_fsp->conn,
1557                 .mem_ctx = mem_ctx,
1558                 .ev = ev,
1559                 .dir_fsp = dir_fsp,
1560                 .smb_fname = smb_fname,
1561         };
1562
1563         subreq = SMB_VFS_GETXATTRAT_SEND(state,
1564                                          ev,
1565                                          dir_fsp,
1566                                          smb_fname,
1567                                          SAMBA_XATTR_DOS_ATTRIB,
1568                                          sizeof(fstring));
1569         if (tevent_req_nomem(subreq, req)) {
1570                 return tevent_req_post(req, ev);
1571         }
1572         tevent_req_set_callback(subreq,
1573                                 vfswrap_get_dos_attributes_getxattr_done,
1574                                 req);
1575
1576         return req;
1577 }
1578
1579 static void vfswrap_get_dos_attributes_getxattr_done(struct tevent_req *subreq)
1580 {
1581         struct tevent_req *req =
1582                 tevent_req_callback_data(subreq,
1583                 struct tevent_req);
1584         struct vfswrap_get_dos_attributes_state *state =
1585                 tevent_req_data(req,
1586                 struct vfswrap_get_dos_attributes_state);
1587         ssize_t xattr_size;
1588         DATA_BLOB blob = {0};
1589         NTSTATUS status;
1590
1591         xattr_size = SMB_VFS_GETXATTRAT_RECV(subreq,
1592                                              &state->aio_state,
1593                                              state,
1594                                              &blob.data);
1595         TALLOC_FREE(subreq);
1596         if (xattr_size == -1) {
1597                 status = map_nt_error_from_unix(state->aio_state.error);
1598
1599                 if (state->as_root) {
1600                         tevent_req_nterror(req, status);
1601                         return;
1602                 }
1603                 if (!NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED)) {
1604                         tevent_req_nterror(req, status);
1605                         return;
1606                 }
1607
1608                 state->as_root = true;
1609
1610                 become_root();
1611                 subreq = SMB_VFS_GETXATTRAT_SEND(state,
1612                                                  state->ev,
1613                                                  state->dir_fsp,
1614                                                  state->smb_fname,
1615                                                  SAMBA_XATTR_DOS_ATTRIB,
1616                                                  sizeof(fstring));
1617                 unbecome_root();
1618                 if (tevent_req_nomem(subreq, req)) {
1619                         return;
1620                 }
1621                 tevent_req_set_callback(subreq,
1622                                         vfswrap_get_dos_attributes_getxattr_done,
1623                                         req);
1624                 return;
1625         }
1626
1627         blob.length = xattr_size;
1628
1629         status = parse_dos_attribute_blob(state->smb_fname,
1630                                           blob,
1631                                           &state->dosmode);
1632         if (!NT_STATUS_IS_OK(status)) {
1633                 tevent_req_nterror(req, status);
1634                 return;
1635         }
1636
1637         tevent_req_done(req);
1638         return;
1639 }
1640
1641 static NTSTATUS vfswrap_get_dos_attributes_recv(struct tevent_req *req,
1642                                                 struct vfs_aio_state *aio_state,
1643                                                 uint32_t *dosmode)
1644 {
1645         struct vfswrap_get_dos_attributes_state *state =
1646                 tevent_req_data(req,
1647                 struct vfswrap_get_dos_attributes_state);
1648         NTSTATUS status;
1649
1650         if (tevent_req_is_nterror(req, &status)) {
1651                 tevent_req_received(req);
1652                 return status;
1653         }
1654
1655         *aio_state = state->aio_state;
1656         *dosmode = state->dosmode;
1657         tevent_req_received(req);
1658         return NT_STATUS_OK;
1659 }
1660
1661 static NTSTATUS vfswrap_fget_dos_attributes(struct vfs_handle_struct *handle,
1662                                             struct files_struct *fsp,
1663                                             uint32_t *dosmode)
1664 {
1665         bool offline;
1666
1667         offline = vfswrap_is_offline(handle, fsp->fsp_name, &fsp->fsp_name->st);
1668         if (offline) {
1669                 *dosmode |= FILE_ATTRIBUTE_OFFLINE;
1670         }
1671
1672         return get_ea_dos_attribute(handle->conn, fsp->fsp_name, dosmode);
1673 }
1674
1675 static NTSTATUS vfswrap_set_dos_attributes(struct vfs_handle_struct *handle,
1676                                            const struct smb_filename *smb_fname,
1677                                            uint32_t dosmode)
1678 {
1679         return set_ea_dos_attribute(handle->conn, smb_fname, dosmode);
1680 }
1681
1682 static NTSTATUS vfswrap_fset_dos_attributes(struct vfs_handle_struct *handle,
1683                                             struct files_struct *fsp,
1684                                             uint32_t dosmode)
1685 {
1686         return set_ea_dos_attribute(handle->conn, fsp->fsp_name, dosmode);
1687 }
1688
1689 static struct vfs_offload_ctx *vfswrap_offload_ctx;
1690
1691 struct vfswrap_offload_read_state {
1692         DATA_BLOB token;
1693 };
1694
1695 static struct tevent_req *vfswrap_offload_read_send(
1696         TALLOC_CTX *mem_ctx,
1697         struct tevent_context *ev,
1698         struct vfs_handle_struct *handle,
1699         struct files_struct *fsp,
1700         uint32_t fsctl,
1701         uint32_t ttl,
1702         off_t offset,
1703         size_t to_copy)
1704 {
1705         struct tevent_req *req = NULL;
1706         struct vfswrap_offload_read_state *state = NULL;
1707         NTSTATUS status;
1708
1709         req = tevent_req_create(mem_ctx, &state,
1710                                 struct vfswrap_offload_read_state);
1711         if (req == NULL) {
1712                 return NULL;
1713         }
1714
1715         status = vfs_offload_token_ctx_init(fsp->conn->sconn->client,
1716                                             &vfswrap_offload_ctx);
1717         if (tevent_req_nterror(req, status)) {
1718                 return tevent_req_post(req, ev);
1719         }
1720
1721         if (fsctl != FSCTL_SRV_REQUEST_RESUME_KEY) {
1722                 tevent_req_nterror(req, NT_STATUS_INVALID_DEVICE_REQUEST);
1723                 return tevent_req_post(req, ev);
1724         }
1725
1726         status = vfs_offload_token_create_blob(state, fsp, fsctl,
1727                                                &state->token);
1728         if (tevent_req_nterror(req, status)) {
1729                 return tevent_req_post(req, ev);
1730         }
1731
1732         status = vfs_offload_token_db_store_fsp(vfswrap_offload_ctx, fsp,
1733                                                 &state->token);
1734         if (tevent_req_nterror(req, status)) {
1735                 return tevent_req_post(req, ev);
1736         }
1737
1738         tevent_req_done(req);
1739         return tevent_req_post(req, ev);
1740 }
1741
1742 static NTSTATUS vfswrap_offload_read_recv(struct tevent_req *req,
1743                                           struct vfs_handle_struct *handle,
1744                                           TALLOC_CTX *mem_ctx,
1745                                           DATA_BLOB *token)
1746 {
1747         struct vfswrap_offload_read_state *state = tevent_req_data(
1748                 req, struct vfswrap_offload_read_state);
1749         NTSTATUS status;
1750
1751         if (tevent_req_is_nterror(req, &status)) {
1752                 tevent_req_received(req);
1753                 return status;
1754         }
1755
1756         token->length = state->token.length;
1757         token->data = talloc_move(mem_ctx, &state->token.data);
1758
1759         tevent_req_received(req);
1760         return NT_STATUS_OK;
1761 }
1762
1763 struct vfswrap_offload_write_state {
1764         uint8_t *buf;
1765         bool read_lck_locked;
1766         bool write_lck_locked;
1767         DATA_BLOB *token;
1768         struct tevent_context *src_ev;
1769         struct files_struct *src_fsp;
1770         off_t src_off;
1771         struct tevent_context *dst_ev;
1772         struct files_struct *dst_fsp;
1773         off_t dst_off;
1774         off_t to_copy;
1775         off_t remaining;
1776         size_t next_io_size;
1777 };
1778
1779 static void vfswrap_offload_write_cleanup(struct tevent_req *req,
1780                                           enum tevent_req_state req_state)
1781 {
1782         struct vfswrap_offload_write_state *state = tevent_req_data(
1783                 req, struct vfswrap_offload_write_state);
1784         bool ok;
1785
1786         if (state->dst_fsp == NULL) {
1787                 return;
1788         }
1789
1790         ok = change_to_user_by_fsp(state->dst_fsp);
1791         SMB_ASSERT(ok);
1792         state->dst_fsp = NULL;
1793 }
1794
1795 static NTSTATUS vfswrap_offload_write_loop(struct tevent_req *req);
1796
1797 static struct tevent_req *vfswrap_offload_write_send(
1798         struct vfs_handle_struct *handle,
1799         TALLOC_CTX *mem_ctx,
1800         struct tevent_context *ev,
1801         uint32_t fsctl,
1802         DATA_BLOB *token,
1803         off_t transfer_offset,
1804         struct files_struct *dest_fsp,
1805         off_t dest_off,
1806         off_t to_copy)
1807 {
1808         struct tevent_req *req;
1809         struct vfswrap_offload_write_state *state = NULL;
1810         /* off_t is signed! */
1811         off_t max_offset = INT64_MAX - to_copy;
1812         size_t num = MIN(to_copy, COPYCHUNK_MAX_TOTAL_LEN);
1813         files_struct *src_fsp = NULL;
1814         NTSTATUS status;
1815         bool ok;
1816
1817         req = tevent_req_create(mem_ctx, &state,
1818                                 struct vfswrap_offload_write_state);
1819         if (req == NULL) {
1820                 return NULL;
1821         }
1822
1823         *state = (struct vfswrap_offload_write_state) {
1824                 .token = token,
1825                 .src_off = transfer_offset,
1826                 .dst_ev = ev,
1827                 .dst_fsp = dest_fsp,
1828                 .dst_off = dest_off,
1829                 .to_copy = to_copy,
1830                 .remaining = to_copy,
1831         };
1832
1833         tevent_req_set_cleanup_fn(req, vfswrap_offload_write_cleanup);
1834
1835         switch (fsctl) {
1836         case FSCTL_SRV_COPYCHUNK:
1837         case FSCTL_SRV_COPYCHUNK_WRITE:
1838                 break;
1839
1840         case FSCTL_OFFLOAD_WRITE:
1841                 tevent_req_nterror(req, NT_STATUS_NOT_IMPLEMENTED);
1842                 return tevent_req_post(req, ev);
1843
1844         case FSCTL_DUP_EXTENTS_TO_FILE:
1845                 DBG_DEBUG("COW clones not supported by vfs_default\n");
1846                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
1847                 return tevent_req_post(req, ev);
1848
1849         default:
1850                 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
1851                 return tevent_req_post(req, ev);
1852         }
1853
1854         /*
1855          * From here on we assume a copy-chunk fsctl
1856          */
1857
1858         if (to_copy == 0) {
1859                 tevent_req_done(req);
1860                 return tevent_req_post(req, ev);
1861         }
1862
1863         if (state->src_off > max_offset) {
1864                 /*
1865                  * Protect integer checks below.
1866                  */
1867                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
1868                 return tevent_req_post(req, ev);
1869         }
1870         if (state->src_off < 0) {
1871                 /*
1872                  * Protect integer checks below.
1873                  */
1874                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
1875                 return tevent_req_post(req, ev);
1876         }
1877         if (state->dst_off > max_offset) {
1878                 /*
1879                  * Protect integer checks below.
1880                  */
1881                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
1882                 return tevent_req_post(req, ev);
1883         }
1884         if (state->dst_off < 0) {
1885                 /*
1886                  * Protect integer checks below.
1887                  */
1888                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
1889                 return tevent_req_post(req, ev);
1890         }
1891
1892         status = vfs_offload_token_db_fetch_fsp(vfswrap_offload_ctx,
1893                                                 token, &src_fsp);
1894         if (tevent_req_nterror(req, status)) {
1895                 return tevent_req_post(req, ev);
1896         }
1897
1898         DBG_DEBUG("server side copy chunk of length %" PRIu64 "\n", to_copy);
1899
1900         status = vfs_offload_token_check_handles(fsctl, src_fsp, dest_fsp);
1901         if (!NT_STATUS_IS_OK(status)) {
1902                 tevent_req_nterror(req, status);
1903                 return tevent_req_post(req, ev);
1904         }
1905
1906         ok = change_to_user_by_fsp(src_fsp);
1907         if (!ok) {
1908                 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
1909                 return tevent_req_post(req, ev);
1910         }
1911
1912         state->src_ev = src_fsp->conn->sconn->ev_ctx;
1913         state->src_fsp = src_fsp;
1914
1915         status = vfs_stat_fsp(src_fsp);
1916         if (tevent_req_nterror(req, status)) {
1917                 return tevent_req_post(req, ev);
1918         }
1919
1920         if (src_fsp->fsp_name->st.st_ex_size < state->src_off + to_copy) {
1921                 /*
1922                  * [MS-SMB2] 3.3.5.15.6 Handling a Server-Side Data Copy Request
1923                  *   If the SourceOffset or SourceOffset + Length extends beyond
1924                  *   the end of file, the server SHOULD<240> treat this as a
1925                  *   STATUS_END_OF_FILE error.
1926                  * ...
1927                  *   <240> Section 3.3.5.15.6: Windows servers will return
1928                  *   STATUS_INVALID_VIEW_SIZE instead of STATUS_END_OF_FILE.
1929                  */
1930                 tevent_req_nterror(req, NT_STATUS_INVALID_VIEW_SIZE);
1931                 return tevent_req_post(req, ev);
1932         }
1933
1934         state->buf = talloc_array(state, uint8_t, num);
1935         if (tevent_req_nomem(state->buf, req)) {
1936                 return tevent_req_post(req, ev);
1937         }
1938
1939         status = vfswrap_offload_write_loop(req);
1940         if (!NT_STATUS_IS_OK(status)) {
1941                 tevent_req_nterror(req, status);
1942                 return tevent_req_post(req, ev);
1943         }
1944
1945         return req;
1946 }
1947
1948 static void vfswrap_offload_write_read_done(struct tevent_req *subreq);
1949
1950 static NTSTATUS vfswrap_offload_write_loop(struct tevent_req *req)
1951 {
1952         struct vfswrap_offload_write_state *state = tevent_req_data(
1953                 req, struct vfswrap_offload_write_state);
1954         struct tevent_req *subreq = NULL;
1955         struct lock_struct read_lck;
1956         bool ok;
1957
1958         /*
1959          * This is called under the context of state->src_fsp.
1960          */
1961
1962         state->next_io_size = MIN(state->remaining, talloc_array_length(state->buf));
1963
1964         init_strict_lock_struct(state->src_fsp,
1965                                 state->src_fsp->op->global->open_persistent_id,
1966                                 state->src_off,
1967                                 state->next_io_size,
1968                                 READ_LOCK,
1969                                 &read_lck);
1970
1971         ok = SMB_VFS_STRICT_LOCK_CHECK(state->src_fsp->conn,
1972                                  state->src_fsp,
1973                                  &read_lck);
1974         if (!ok) {
1975                 return NT_STATUS_FILE_LOCK_CONFLICT;
1976         }
1977
1978         subreq = SMB_VFS_PREAD_SEND(state,
1979                                     state->src_ev,
1980                                     state->src_fsp,
1981                                     state->buf,
1982                                     state->next_io_size,
1983                                     state->src_off);
1984         if (subreq == NULL) {
1985                 return NT_STATUS_NO_MEMORY;
1986         }
1987         tevent_req_set_callback(subreq, vfswrap_offload_write_read_done, req);
1988
1989         return NT_STATUS_OK;
1990 }
1991
1992 static void vfswrap_offload_write_write_done(struct tevent_req *subreq);
1993
1994 static void vfswrap_offload_write_read_done(struct tevent_req *subreq)
1995 {
1996         struct tevent_req *req = tevent_req_callback_data(
1997                 subreq, struct tevent_req);
1998         struct vfswrap_offload_write_state *state = tevent_req_data(
1999                 req, struct vfswrap_offload_write_state);
2000         struct vfs_aio_state aio_state;
2001         struct lock_struct write_lck;
2002         ssize_t nread;
2003         bool ok;
2004
2005         nread = SMB_VFS_PREAD_RECV(subreq, &aio_state);
2006         TALLOC_FREE(subreq);
2007         if (nread == -1) {
2008                 DBG_ERR("read failed: %s\n", strerror(aio_state.error));
2009                 tevent_req_nterror(req, map_nt_error_from_unix(aio_state.error));
2010                 return;
2011         }
2012         if (nread != state->next_io_size) {
2013                 DBG_ERR("Short read, only %zd of %zu\n",
2014                         nread, state->next_io_size);
2015                 tevent_req_nterror(req, NT_STATUS_IO_DEVICE_ERROR);
2016                 return;
2017         }
2018
2019         state->src_off += nread;
2020
2021         ok = change_to_user_by_fsp(state->dst_fsp);
2022         if (!ok) {
2023                 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
2024                 return;
2025         }
2026
2027         init_strict_lock_struct(state->dst_fsp,
2028                                 state->dst_fsp->op->global->open_persistent_id,
2029                                 state->dst_off,
2030                                 state->next_io_size,
2031                                 WRITE_LOCK,
2032                                 &write_lck);
2033
2034         ok = SMB_VFS_STRICT_LOCK_CHECK(state->dst_fsp->conn,
2035                                  state->dst_fsp,
2036                                  &write_lck);
2037         if (!ok) {
2038                 tevent_req_nterror(req, NT_STATUS_FILE_LOCK_CONFLICT);
2039                 return;
2040         }
2041
2042         subreq = SMB_VFS_PWRITE_SEND(state,
2043                                      state->dst_ev,
2044                                      state->dst_fsp,
2045                                      state->buf,
2046                                      state->next_io_size,
2047                                      state->dst_off);
2048         if (subreq == NULL) {
2049                 tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
2050                 return;
2051         }
2052         tevent_req_set_callback(subreq, vfswrap_offload_write_write_done, req);
2053 }
2054
2055 static void vfswrap_offload_write_write_done(struct tevent_req *subreq)
2056 {
2057         struct tevent_req *req = tevent_req_callback_data(
2058                 subreq, struct tevent_req);
2059         struct vfswrap_offload_write_state *state = tevent_req_data(
2060                 req, struct vfswrap_offload_write_state);
2061         struct vfs_aio_state aio_state;
2062         ssize_t nwritten;
2063         NTSTATUS status;
2064         bool ok;
2065
2066         nwritten = SMB_VFS_PWRITE_RECV(subreq, &aio_state);
2067         TALLOC_FREE(subreq);
2068         if (nwritten == -1) {
2069                 DBG_ERR("write failed: %s\n", strerror(aio_state.error));
2070                 tevent_req_nterror(req, map_nt_error_from_unix(aio_state.error));
2071                 return;
2072         }
2073         if (nwritten != state->next_io_size) {
2074                 DBG_ERR("Short write, only %zd of %zu\n", nwritten, state->next_io_size);
2075                 tevent_req_nterror(req, NT_STATUS_IO_DEVICE_ERROR);
2076                 return;
2077         }
2078
2079         state->dst_off += nwritten;
2080
2081         if (state->remaining < nwritten) {
2082                 /* Paranoia check */
2083                 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
2084                 return;
2085         }
2086         state->remaining -= nwritten;
2087         if (state->remaining == 0) {
2088                 tevent_req_done(req);
2089                 return;
2090         }
2091
2092         ok = change_to_user_by_fsp(state->src_fsp);
2093         if (!ok) {
2094                 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
2095                 return;
2096         }
2097
2098         status = vfswrap_offload_write_loop(req);
2099         if (!NT_STATUS_IS_OK(status)) {
2100                 tevent_req_nterror(req, status);
2101                 return;
2102         }
2103
2104         return;
2105 }
2106
2107 static NTSTATUS vfswrap_offload_write_recv(struct vfs_handle_struct *handle,
2108                                         struct tevent_req *req,
2109                                         off_t *copied)
2110 {
2111         struct vfswrap_offload_write_state *state = tevent_req_data(
2112                 req, struct vfswrap_offload_write_state);
2113         NTSTATUS status;
2114
2115         if (tevent_req_is_nterror(req, &status)) {
2116                 DBG_DEBUG("copy chunk failed: %s\n", nt_errstr(status));
2117                 *copied = 0;
2118                 tevent_req_received(req);
2119                 return status;
2120         }
2121
2122         *copied = state->to_copy;
2123         DBG_DEBUG("copy chunk copied %lu\n", (unsigned long)*copied);
2124         tevent_req_received(req);
2125
2126         return NT_STATUS_OK;
2127 }
2128
2129 static NTSTATUS vfswrap_get_compression(struct vfs_handle_struct *handle,
2130                                         TALLOC_CTX *mem_ctx,
2131                                         struct files_struct *fsp,
2132                                         struct smb_filename *smb_fname,
2133                                         uint16_t *_compression_fmt)
2134 {
2135         return NT_STATUS_INVALID_DEVICE_REQUEST;
2136 }
2137
2138 static NTSTATUS vfswrap_set_compression(struct vfs_handle_struct *handle,
2139                                         TALLOC_CTX *mem_ctx,
2140                                         struct files_struct *fsp,
2141                                         uint16_t compression_fmt)
2142 {
2143         return NT_STATUS_INVALID_DEVICE_REQUEST;
2144 }
2145
2146 /********************************************************************
2147  Given a stat buffer return the allocated size on disk, taking into
2148  account sparse files.
2149 ********************************************************************/
2150 static uint64_t vfswrap_get_alloc_size(vfs_handle_struct *handle,
2151                                        struct files_struct *fsp,
2152                                        const SMB_STRUCT_STAT *sbuf)
2153 {
2154         uint64_t result;
2155
2156         START_PROFILE(syscall_get_alloc_size);
2157
2158         if(S_ISDIR(sbuf->st_ex_mode)) {
2159                 result = 0;
2160                 goto out;
2161         }
2162
2163 #if defined(HAVE_STAT_ST_BLOCKS) && defined(STAT_ST_BLOCKSIZE)
2164         /* The type of st_blocksize is blkcnt_t which *MUST* be
2165            signed (according to POSIX) and can be less than 64-bits.
2166            Ensure when we're converting to 64 bits wide we don't
2167            sign extend. */
2168 #if defined(SIZEOF_BLKCNT_T_8)
2169         result = (uint64_t)STAT_ST_BLOCKSIZE * (uint64_t)sbuf->st_ex_blocks;
2170 #elif defined(SIZEOF_BLKCNT_T_4)
2171         {
2172                 uint64_t bs = ((uint64_t)sbuf->st_ex_blocks) & 0xFFFFFFFFLL;
2173                 result = (uint64_t)STAT_ST_BLOCKSIZE * bs;
2174         }
2175 #else
2176 #error SIZEOF_BLKCNT_T_NOT_A_SUPPORTED_VALUE
2177 #endif
2178         if (result == 0) {
2179                 /*
2180                  * Some file systems do not allocate a block for very
2181                  * small files. But for non-empty file should report a
2182                  * positive size.
2183                  */
2184
2185                 uint64_t filesize = get_file_size_stat(sbuf);
2186                 if (filesize > 0) {
2187                         result = MIN((uint64_t)STAT_ST_BLOCKSIZE, filesize);
2188                 }
2189         }
2190 #else
2191         result = get_file_size_stat(sbuf);
2192 #endif
2193
2194         if (fsp && fsp->initial_allocation_size)
2195                 result = MAX(result,fsp->initial_allocation_size);
2196
2197         result = smb_roundup(handle->conn, result);
2198
2199  out:
2200         END_PROFILE(syscall_get_alloc_size);
2201         return result;
2202 }
2203
2204 static int vfswrap_unlink(vfs_handle_struct *handle,
2205                           const struct smb_filename *smb_fname)
2206 {
2207         int result = -1;
2208
2209         START_PROFILE(syscall_unlink);
2210
2211         if (smb_fname->stream_name) {
2212                 errno = ENOENT;
2213                 goto out;
2214         }
2215         result = unlink(smb_fname->base_name);
2216
2217  out:
2218         END_PROFILE(syscall_unlink);
2219         return result;
2220 }
2221
2222 static int vfswrap_chmod(vfs_handle_struct *handle,
2223                         const struct smb_filename *smb_fname,
2224                         mode_t mode)
2225 {
2226         int result;
2227
2228         START_PROFILE(syscall_chmod);
2229         result = chmod(smb_fname->base_name, mode);
2230         END_PROFILE(syscall_chmod);
2231         return result;
2232 }
2233
2234 static int vfswrap_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
2235 {
2236         int result;
2237
2238         START_PROFILE(syscall_fchmod);
2239 #if defined(HAVE_FCHMOD)
2240         result = fchmod(fsp->fh->fd, mode);
2241 #else
2242         result = -1;
2243         errno = ENOSYS;
2244 #endif
2245
2246         END_PROFILE(syscall_fchmod);
2247         return result;
2248 }
2249
2250 static int vfswrap_chown(vfs_handle_struct *handle,
2251                         const struct smb_filename *smb_fname,
2252                         uid_t uid,
2253                         gid_t gid)
2254 {
2255         int result;
2256
2257         START_PROFILE(syscall_chown);
2258         result = chown(smb_fname->base_name, uid, gid);
2259         END_PROFILE(syscall_chown);
2260         return result;
2261 }
2262
2263 static int vfswrap_fchown(vfs_handle_struct *handle, files_struct *fsp, uid_t uid, gid_t gid)
2264 {
2265 #ifdef HAVE_FCHOWN
2266         int result;
2267
2268         START_PROFILE(syscall_fchown);
2269         result = fchown(fsp->fh->fd, uid, gid);
2270         END_PROFILE(syscall_fchown);
2271         return result;
2272 #else
2273         errno = ENOSYS;
2274         return -1;
2275 #endif
2276 }
2277
2278 static int vfswrap_lchown(vfs_handle_struct *handle,
2279                         const struct smb_filename *smb_fname,
2280                         uid_t uid,
2281                         gid_t gid)
2282 {
2283         int result;
2284
2285         START_PROFILE(syscall_lchown);
2286         result = lchown(smb_fname->base_name, uid, gid);
2287         END_PROFILE(syscall_lchown);
2288         return result;
2289 }
2290
2291 static int vfswrap_chdir(vfs_handle_struct *handle,
2292                         const struct smb_filename *smb_fname)
2293 {
2294         int result;
2295
2296         START_PROFILE(syscall_chdir);
2297         result = chdir(smb_fname->base_name);
2298         END_PROFILE(syscall_chdir);
2299         return result;
2300 }
2301
2302 static struct smb_filename *vfswrap_getwd(vfs_handle_struct *handle,
2303                                 TALLOC_CTX *ctx)
2304 {
2305         char *result;
2306         struct smb_filename *smb_fname = NULL;
2307
2308         START_PROFILE(syscall_getwd);
2309         result = sys_getwd();
2310         END_PROFILE(syscall_getwd);
2311
2312         if (result == NULL) {
2313                 return NULL;
2314         }
2315         smb_fname = synthetic_smb_fname(ctx,
2316                                 result,
2317                                 NULL,
2318                                 NULL,
2319                                 0);
2320         /*
2321          * sys_getwd() *always* returns malloced memory.
2322          * We must free here to avoid leaks:
2323          * BUG:https://bugzilla.samba.org/show_bug.cgi?id=13372
2324          */
2325         SAFE_FREE(result);
2326         return smb_fname;
2327 }
2328
2329 /*********************************************************************
2330  nsec timestamp resolution call. Convert down to whatever the underlying
2331  system will support.
2332 **********************************************************************/
2333
2334 static int vfswrap_ntimes(vfs_handle_struct *handle,
2335                           const struct smb_filename *smb_fname,
2336                           struct smb_file_time *ft)
2337 {
2338         int result = -1;
2339
2340         START_PROFILE(syscall_ntimes);
2341
2342         if (smb_fname->stream_name) {
2343                 errno = ENOENT;
2344                 goto out;
2345         }
2346
2347         if (ft != NULL) {
2348                 if (null_timespec(ft->atime)) {
2349                         ft->atime= smb_fname->st.st_ex_atime;
2350                 }
2351
2352                 if (null_timespec(ft->mtime)) {
2353                         ft->mtime = smb_fname->st.st_ex_mtime;
2354                 }
2355
2356                 if (!null_timespec(ft->create_time)) {
2357                         set_create_timespec_ea(handle->conn,
2358                                                smb_fname,
2359                                                ft->create_time);
2360                 }
2361
2362                 if ((timespec_compare(&ft->atime,
2363                                       &smb_fname->st.st_ex_atime) == 0) &&
2364                     (timespec_compare(&ft->mtime,
2365                                       &smb_fname->st.st_ex_mtime) == 0)) {
2366                         return 0;
2367                 }
2368         }
2369
2370 #if defined(HAVE_UTIMENSAT)
2371         if (ft != NULL) {
2372                 struct timespec ts[2];
2373                 ts[0] = ft->atime;
2374                 ts[1] = ft->mtime;
2375                 result = utimensat(AT_FDCWD, smb_fname->base_name, ts, 0);
2376         } else {
2377                 result = utimensat(AT_FDCWD, smb_fname->base_name, NULL, 0);
2378         }
2379         if (!((result == -1) && (errno == ENOSYS))) {
2380                 goto out;
2381         }
2382 #endif
2383 #if defined(HAVE_UTIMES)
2384         if (ft != NULL) {
2385                 struct timeval tv[2];
2386                 tv[0] = convert_timespec_to_timeval(ft->atime);
2387                 tv[1] = convert_timespec_to_timeval(ft->mtime);
2388                 result = utimes(smb_fname->base_name, tv);
2389         } else {
2390                 result = utimes(smb_fname->base_name, NULL);
2391         }
2392         if (!((result == -1) && (errno == ENOSYS))) {
2393                 goto out;
2394         }
2395 #endif
2396 #if defined(HAVE_UTIME)
2397         if (ft != NULL) {
2398                 struct utimbuf times;
2399                 times.actime = convert_timespec_to_time_t(ft->atime);
2400                 times.modtime = convert_timespec_to_time_t(ft->mtime);
2401                 result = utime(smb_fname->base_name, &times);
2402         } else {
2403                 result = utime(smb_fname->base_name, NULL);
2404         }
2405         if (!((result == -1) && (errno == ENOSYS))) {
2406                 goto out;
2407         }
2408 #endif
2409         errno = ENOSYS;
2410         result = -1;
2411
2412  out:
2413         END_PROFILE(syscall_ntimes);
2414         return result;
2415 }
2416
2417 /*********************************************************************
2418  A version of ftruncate that will write the space on disk if strict
2419  allocate is set.
2420 **********************************************************************/
2421
2422 static int strict_allocate_ftruncate(vfs_handle_struct *handle, files_struct *fsp, off_t len)
2423 {
2424         off_t space_to_write;
2425         uint64_t space_avail;
2426         uint64_t bsize,dfree,dsize;
2427         int ret;
2428         NTSTATUS status;
2429         SMB_STRUCT_STAT *pst;
2430
2431         status = vfs_stat_fsp(fsp);
2432         if (!NT_STATUS_IS_OK(status)) {
2433                 return -1;
2434         }
2435         pst = &fsp->fsp_name->st;
2436
2437 #ifdef S_ISFIFO
2438         if (S_ISFIFO(pst->st_ex_mode))
2439                 return 0;
2440 #endif
2441
2442         if (pst->st_ex_size == len)
2443                 return 0;
2444
2445         /* Shrink - just ftruncate. */
2446         if (pst->st_ex_size > len)
2447                 return ftruncate(fsp->fh->fd, len);
2448
2449         space_to_write = len - pst->st_ex_size;
2450
2451         /* for allocation try fallocate first. This can fail on some
2452            platforms e.g. when the filesystem doesn't support it and no
2453            emulation is being done by the libc (like on AIX with JFS1). In that
2454            case we do our own emulation. fallocate implementations can
2455            return ENOTSUP or EINVAL in cases like that. */
2456         ret = SMB_VFS_FALLOCATE(fsp, 0, pst->st_ex_size, space_to_write);
2457         if (ret == -1 && errno == ENOSPC) {
2458                 return -1;
2459         }
2460         if (ret == 0) {
2461                 return 0;
2462         }
2463         DEBUG(10,("strict_allocate_ftruncate: SMB_VFS_FALLOCATE failed with "
2464                 "error %d. Falling back to slow manual allocation\n", errno));
2465
2466         /* available disk space is enough or not? */
2467         space_avail =
2468             get_dfree_info(fsp->conn, fsp->fsp_name, &bsize, &dfree, &dsize);
2469         /* space_avail is 1k blocks */
2470         if (space_avail == (uint64_t)-1 ||
2471                         ((uint64_t)space_to_write/1024 > space_avail) ) {
2472                 errno = ENOSPC;
2473                 return -1;
2474         }
2475
2476         /* Write out the real space on disk. */
2477         ret = vfs_slow_fallocate(fsp, pst->st_ex_size, space_to_write);
2478         if (ret != 0) {
2479                 return -1;
2480         }
2481
2482         return 0;
2483 }
2484
2485 static int vfswrap_ftruncate(vfs_handle_struct *handle, files_struct *fsp, off_t len)
2486 {
2487         int result = -1;
2488         SMB_STRUCT_STAT *pst;
2489         NTSTATUS status;
2490         char c = 0;
2491
2492         START_PROFILE(syscall_ftruncate);
2493
2494         if (lp_strict_allocate(SNUM(fsp->conn)) && !fsp->is_sparse) {
2495                 result = strict_allocate_ftruncate(handle, fsp, len);
2496                 END_PROFILE(syscall_ftruncate);
2497                 return result;
2498         }
2499
2500         /* we used to just check HAVE_FTRUNCATE_EXTEND and only use
2501            ftruncate if the system supports it. Then I discovered that
2502            you can have some filesystems that support ftruncate
2503            expansion and some that don't! On Linux fat can't do
2504            ftruncate extend but ext2 can. */
2505
2506         result = ftruncate(fsp->fh->fd, len);
2507
2508         /* According to W. R. Stevens advanced UNIX prog. Pure 4.3 BSD cannot
2509            extend a file with ftruncate. Provide alternate implementation
2510            for this */
2511
2512         /* Do an fstat to see if the file is longer than the requested
2513            size in which case the ftruncate above should have
2514            succeeded or shorter, in which case seek to len - 1 and
2515            write 1 byte of zero */
2516         status = vfs_stat_fsp(fsp);
2517         if (!NT_STATUS_IS_OK(status)) {
2518                 goto done;
2519         }
2520
2521         /* We need to update the files_struct after successful ftruncate */
2522         if (result == 0) {
2523                 goto done;
2524         }
2525
2526         pst = &fsp->fsp_name->st;
2527
2528 #ifdef S_ISFIFO
2529         if (S_ISFIFO(pst->st_ex_mode)) {
2530                 result = 0;
2531                 goto done;
2532         }
2533 #endif
2534
2535         if (pst->st_ex_size == len) {
2536                 result = 0;
2537                 goto done;
2538         }
2539
2540         if (pst->st_ex_size > len) {
2541                 /* the ftruncate should have worked */
2542                 goto done;
2543         }
2544
2545         if (SMB_VFS_PWRITE(fsp, &c, 1, len-1)!=1) {
2546                 goto done;
2547         }
2548
2549         result = 0;
2550
2551   done:
2552
2553         END_PROFILE(syscall_ftruncate);
2554         return result;
2555 }
2556
2557 static int vfswrap_fallocate(vfs_handle_struct *handle,
2558                         files_struct *fsp,
2559                         uint32_t mode,
2560                         off_t offset,
2561                         off_t len)
2562 {
2563         int result;
2564
2565         START_PROFILE(syscall_fallocate);
2566         if (mode == 0) {
2567                 result = sys_posix_fallocate(fsp->fh->fd, offset, len);
2568                 /*
2569                  * posix_fallocate returns 0 on success, errno on error
2570                  * and doesn't set errno. Make it behave like fallocate()
2571                  * which returns -1, and sets errno on failure.
2572                  */
2573                 if (result != 0) {
2574                         errno = result;
2575                         result = -1;
2576                 }
2577         } else {
2578                 /* sys_fallocate handles filtering of unsupported mode flags */
2579                 result = sys_fallocate(fsp->fh->fd, mode, offset, len);
2580         }
2581         END_PROFILE(syscall_fallocate);
2582         return result;
2583 }
2584
2585 static bool vfswrap_lock(vfs_handle_struct *handle, files_struct *fsp, int op, off_t offset, off_t count, int type)
2586 {
2587         bool result;
2588
2589         START_PROFILE(syscall_fcntl_lock);
2590
2591         if (fsp->use_ofd_locks) {
2592                 op = map_process_lock_to_ofd_lock(op);
2593         }
2594
2595         result =  fcntl_lock(fsp->fh->fd, op, offset, count, type);
2596         END_PROFILE(syscall_fcntl_lock);
2597         return result;
2598 }
2599
2600 static int vfswrap_kernel_flock(vfs_handle_struct *handle, files_struct *fsp,
2601                                 uint32_t share_mode, uint32_t access_mask)
2602 {
2603         START_PROFILE(syscall_kernel_flock);
2604         kernel_flock(fsp->fh->fd, share_mode, access_mask);
2605         END_PROFILE(syscall_kernel_flock);
2606         return 0;
2607 }
2608
2609 static bool vfswrap_getlock(vfs_handle_struct *handle, files_struct *fsp, off_t *poffset, off_t *pcount, int *ptype, pid_t *ppid)
2610 {
2611         bool result;
2612         int op = F_GETLK;
2613
2614         START_PROFILE(syscall_fcntl_getlock);
2615
2616         if (fsp->use_ofd_locks) {
2617                 op = map_process_lock_to_ofd_lock(op);
2618         }
2619
2620         result = fcntl_getlock(fsp->fh->fd, op, poffset, pcount, ptype, ppid);
2621         END_PROFILE(syscall_fcntl_getlock);
2622         return result;
2623 }
2624
2625 static int vfswrap_linux_setlease(vfs_handle_struct *handle, files_struct *fsp,
2626                                 int leasetype)
2627 {
2628         int result = -1;
2629
2630         START_PROFILE(syscall_linux_setlease);
2631
2632 #ifdef HAVE_KERNEL_OPLOCKS_LINUX
2633         result = linux_setlease(fsp->fh->fd, leasetype);
2634 #else
2635         errno = ENOSYS;
2636 #endif
2637         END_PROFILE(syscall_linux_setlease);
2638         return result;
2639 }
2640
2641 static int vfswrap_symlink(vfs_handle_struct *handle,
2642                         const char *link_target,
2643                         const struct smb_filename *new_smb_fname)
2644 {
2645         int result;
2646
2647         START_PROFILE(syscall_symlink);
2648         result = symlink(link_target, new_smb_fname->base_name);
2649         END_PROFILE(syscall_symlink);
2650         return result;
2651 }
2652
2653 static int vfswrap_readlink(vfs_handle_struct *handle,
2654                         const struct smb_filename *smb_fname,
2655                         char *buf,
2656                         size_t bufsiz)
2657 {
2658         int result;
2659
2660         START_PROFILE(syscall_readlink);
2661         result = readlink(smb_fname->base_name, buf, bufsiz);
2662         END_PROFILE(syscall_readlink);
2663         return result;
2664 }
2665
2666 static int vfswrap_link(vfs_handle_struct *handle,
2667                         const struct smb_filename *old_smb_fname,
2668                         const struct smb_filename *new_smb_fname)
2669 {
2670         int result;
2671
2672         START_PROFILE(syscall_link);
2673         result = link(old_smb_fname->base_name, new_smb_fname->base_name);
2674         END_PROFILE(syscall_link);
2675         return result;
2676 }
2677
2678 static int vfswrap_mknod(vfs_handle_struct *handle,
2679                         const struct smb_filename *smb_fname,
2680                         mode_t mode,
2681                         SMB_DEV_T dev)
2682 {
2683         int result;
2684
2685         START_PROFILE(syscall_mknod);
2686         result = sys_mknod(smb_fname->base_name, mode, dev);
2687         END_PROFILE(syscall_mknod);
2688         return result;
2689 }
2690
2691 static struct smb_filename *vfswrap_realpath(vfs_handle_struct *handle,
2692                         TALLOC_CTX *ctx,
2693                         const struct smb_filename *smb_fname)
2694 {
2695         char *result;
2696         struct smb_filename *result_fname = NULL;
2697
2698         START_PROFILE(syscall_realpath);
2699         result = sys_realpath(smb_fname->base_name);
2700         END_PROFILE(syscall_realpath);
2701         if (result) {
2702                 result_fname = synthetic_smb_fname(ctx, result, NULL, NULL, 0);
2703                 SAFE_FREE(result);
2704         }
2705         return result_fname;
2706 }
2707
2708 static int vfswrap_chflags(vfs_handle_struct *handle,
2709                         const struct smb_filename *smb_fname,
2710                         unsigned int flags)
2711 {
2712 #ifdef HAVE_CHFLAGS
2713         return chflags(smb_fname->base_name, flags);
2714 #else
2715         errno = ENOSYS;
2716         return -1;
2717 #endif
2718 }
2719
2720 static struct file_id vfswrap_file_id_create(struct vfs_handle_struct *handle,
2721                                              const SMB_STRUCT_STAT *sbuf)
2722 {
2723         struct file_id key;
2724
2725         /* the ZERO_STRUCT ensures padding doesn't break using the key as a
2726          * blob */
2727         ZERO_STRUCT(key);
2728
2729         key.devid = sbuf->st_ex_dev;
2730         key.inode = sbuf->st_ex_ino;
2731         /* key.extid is unused by default. */
2732
2733         return key;
2734 }
2735
2736 static uint64_t vfswrap_fs_file_id(struct vfs_handle_struct *handle,
2737                                    const SMB_STRUCT_STAT *psbuf)
2738 {
2739         uint64_t file_id;
2740
2741         if (!(psbuf->st_ex_iflags & ST_EX_IFLAG_CALCULATED_FILE_ID)) {
2742                 return psbuf->st_ex_file_id;
2743         }
2744
2745         if (handle->conn->base_share_dev == psbuf->st_ex_dev) {
2746                 return (uint64_t)psbuf->st_ex_ino;
2747         }
2748
2749         /* FileIDLow */
2750         file_id = ((psbuf->st_ex_ino) & UINT32_MAX);
2751
2752         /* FileIDHigh */
2753         file_id |= ((uint64_t)((psbuf->st_ex_dev) & UINT32_MAX)) << 32;
2754
2755         return file_id;
2756 }
2757
2758 static NTSTATUS vfswrap_streaminfo(vfs_handle_struct *handle,
2759                                    struct files_struct *fsp,
2760                                    const struct smb_filename *smb_fname,
2761                                    TALLOC_CTX *mem_ctx,
2762                                    unsigned int *pnum_streams,
2763                                    struct stream_struct **pstreams)
2764 {
2765         SMB_STRUCT_STAT sbuf;
2766         struct stream_struct *tmp_streams = NULL;
2767         int ret;
2768
2769         if ((fsp != NULL) && (fsp->is_directory)) {
2770                 /*
2771                  * No default streams on directories
2772                  */
2773                 goto done;
2774         }
2775
2776         if ((fsp != NULL) && (fsp->fh->fd != -1)) {
2777                 ret = SMB_VFS_FSTAT(fsp, &sbuf);
2778         }
2779         else {
2780                 struct smb_filename smb_fname_cp;
2781
2782                 ZERO_STRUCT(smb_fname_cp);
2783                 smb_fname_cp.base_name = discard_const_p(char,
2784                                         smb_fname->base_name);
2785                 smb_fname_cp.flags = smb_fname->flags;
2786
2787                 if (smb_fname_cp.flags & SMB_FILENAME_POSIX_PATH) {
2788                         ret = SMB_VFS_LSTAT(handle->conn, &smb_fname_cp);
2789                 } else {
2790                         ret = SMB_VFS_STAT(handle->conn, &smb_fname_cp);
2791                 }
2792                 sbuf = smb_fname_cp.st;
2793         }
2794
2795         if (ret == -1) {
2796                 return map_nt_error_from_unix(errno);
2797         }
2798
2799         if (S_ISDIR(sbuf.st_ex_mode)) {
2800                 goto done;
2801         }
2802
2803         tmp_streams = talloc_realloc(mem_ctx, *pstreams, struct stream_struct,
2804                                         (*pnum_streams) + 1);
2805         if (tmp_streams == NULL) {
2806                 return NT_STATUS_NO_MEMORY;
2807         }
2808         tmp_streams[*pnum_streams].name = talloc_strdup(tmp_streams, "::$DATA");
2809         if (tmp_streams[*pnum_streams].name == NULL) {
2810                 return NT_STATUS_NO_MEMORY;
2811         }
2812         tmp_streams[*pnum_streams].size = sbuf.st_ex_size;
2813         tmp_streams[*pnum_streams].alloc_size = SMB_VFS_GET_ALLOC_SIZE(handle->conn, fsp, &sbuf);
2814
2815         *pnum_streams += 1;
2816         *pstreams = tmp_streams;
2817  done:
2818         return NT_STATUS_OK;
2819 }
2820
2821 static int vfswrap_get_real_filename(struct vfs_handle_struct *handle,
2822                                      const char *path,
2823                                      const char *name,
2824                                      TALLOC_CTX *mem_ctx,
2825                                      char **found_name)
2826 {
2827         /*
2828          * Don't fall back to get_real_filename so callers can differentiate
2829          * between a full directory scan and an actual case-insensitive stat.
2830          */
2831         errno = EOPNOTSUPP;
2832         return -1;
2833 }
2834
2835 static const char *vfswrap_connectpath(struct vfs_handle_struct *handle,
2836                                    const struct smb_filename *smb_fname)
2837 {
2838         return handle->conn->connectpath;
2839 }
2840
2841 static NTSTATUS vfswrap_brl_lock_windows(struct vfs_handle_struct *handle,
2842                                          struct byte_range_lock *br_lck,
2843                                          struct lock_struct *plock)
2844 {
2845         SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
2846
2847         /* Note: blr is not used in the default implementation. */
2848         return brl_lock_windows_default(br_lck, plock);
2849 }
2850
2851 static bool vfswrap_brl_unlock_windows(struct vfs_handle_struct *handle,
2852                                        struct byte_range_lock *br_lck,
2853                                        const struct lock_struct *plock)
2854 {
2855         SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
2856
2857         return brl_unlock_windows_default(br_lck, plock);
2858 }
2859
2860 static bool vfswrap_strict_lock_check(struct vfs_handle_struct *handle,
2861                                       files_struct *fsp,
2862                                       struct lock_struct *plock)
2863 {
2864         SMB_ASSERT(plock->lock_type == READ_LOCK ||
2865             plock->lock_type == WRITE_LOCK);
2866
2867         return strict_lock_check_default(fsp, plock);
2868 }
2869
2870 /* NT ACL operations. */
2871
2872 static NTSTATUS vfswrap_fget_nt_acl(vfs_handle_struct *handle,
2873                                     files_struct *fsp,
2874                                     uint32_t security_info,
2875                                     TALLOC_CTX *mem_ctx,
2876                                     struct security_descriptor **ppdesc)
2877 {
2878         NTSTATUS result;
2879
2880         START_PROFILE(fget_nt_acl);
2881         result = posix_fget_nt_acl(fsp, security_info,
2882                                    mem_ctx, ppdesc);
2883         END_PROFILE(fget_nt_acl);
2884         return result;
2885 }
2886
2887 static NTSTATUS vfswrap_get_nt_acl(vfs_handle_struct *handle,
2888                                    const struct smb_filename *smb_fname,
2889                                    uint32_t security_info,
2890                                    TALLOC_CTX *mem_ctx,
2891                                    struct security_descriptor **ppdesc)
2892 {
2893         NTSTATUS result;
2894
2895         START_PROFILE(get_nt_acl);
2896         result = posix_get_nt_acl(handle->conn,
2897                                 smb_fname,
2898                                 security_info,
2899                                 mem_ctx,
2900                                 ppdesc);
2901         END_PROFILE(get_nt_acl);
2902         return result;
2903 }
2904
2905 static NTSTATUS vfswrap_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32_t security_info_sent, const struct security_descriptor *psd)
2906 {
2907         NTSTATUS result;
2908
2909         START_PROFILE(fset_nt_acl);
2910         result = set_nt_acl(fsp, security_info_sent, psd);
2911         END_PROFILE(fset_nt_acl);
2912         return result;
2913 }
2914
2915 static NTSTATUS vfswrap_audit_file(struct vfs_handle_struct *handle,
2916                                    struct smb_filename *file,
2917                                    struct security_acl *sacl,
2918                                    uint32_t access_requested,
2919                                    uint32_t access_denied)
2920 {
2921         return NT_STATUS_OK; /* Nothing to do here ... */
2922 }
2923
2924 static SMB_ACL_T vfswrap_sys_acl_get_file(vfs_handle_struct *handle,
2925                                           const struct smb_filename *smb_fname,
2926                                           SMB_ACL_TYPE_T type,
2927                                           TALLOC_CTX *mem_ctx)
2928 {
2929         return sys_acl_get_file(handle, smb_fname, type, mem_ctx);
2930 }
2931
2932 static SMB_ACL_T vfswrap_sys_acl_get_fd(vfs_handle_struct *handle,
2933                                         files_struct *fsp,
2934                                         TALLOC_CTX *mem_ctx)
2935 {
2936         return sys_acl_get_fd(handle, fsp, mem_ctx);
2937 }
2938
2939 static int vfswrap_sys_acl_set_file(vfs_handle_struct *handle,
2940                                 const struct smb_filename *smb_fname,
2941                                 SMB_ACL_TYPE_T acltype,
2942                                 SMB_ACL_T theacl)
2943 {
2944         return sys_acl_set_file(handle, smb_fname, acltype, theacl);
2945 }
2946
2947 static int vfswrap_sys_acl_set_fd(vfs_handle_struct *handle, files_struct *fsp, SMB_ACL_T theacl)
2948 {
2949         return sys_acl_set_fd(handle, fsp, theacl);
2950 }
2951
2952 static int vfswrap_sys_acl_delete_def_file(vfs_handle_struct *handle,
2953                         const struct smb_filename *smb_fname)
2954 {
2955         return sys_acl_delete_def_file(handle, smb_fname);
2956 }
2957
2958 /****************************************************************
2959  Extended attribute operations.
2960 *****************************************************************/
2961
2962 static ssize_t vfswrap_getxattr(struct vfs_handle_struct *handle,
2963                         const struct smb_filename *smb_fname,
2964                         const char *name,
2965                         void *value,
2966                         size_t size)
2967 {
2968         return getxattr(smb_fname->base_name, name, value, size);
2969 }
2970
2971 struct vfswrap_getxattrat_state {
2972         struct tevent_context *ev;
2973         files_struct *dir_fsp;
2974         const struct smb_filename *smb_fname;
2975         struct tevent_req *req;
2976
2977         /*
2978          * The following variables are talloced off "state" which is protected
2979          * by a destructor and thus are guaranteed to be safe to be used in the
2980          * job function in the worker thread.
2981          */
2982         char *name;
2983         const char *xattr_name;
2984         uint8_t *xattr_value;
2985         struct security_unix_token *token;
2986
2987         ssize_t xattr_size;
2988         struct vfs_aio_state vfs_aio_state;
2989         SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
2990 };
2991
2992 static int vfswrap_getxattrat_state_destructor(
2993                 struct vfswrap_getxattrat_state *state)
2994 {
2995         return -1;
2996 }
2997
2998 static void vfswrap_getxattrat_do_sync(struct tevent_req *req);
2999 static void vfswrap_getxattrat_do_async(void *private_data);
3000 static void vfswrap_getxattrat_done(struct tevent_req *subreq);
3001
3002 static struct tevent_req *vfswrap_getxattrat_send(
3003                         TALLOC_CTX *mem_ctx,
3004                         struct tevent_context *ev,
3005                         struct vfs_handle_struct *handle,
3006                         files_struct *dir_fsp,
3007                         const struct smb_filename *smb_fname,
3008                         const char *xattr_name,
3009                         size_t alloc_hint)
3010 {
3011         struct tevent_req *req = NULL;
3012         struct tevent_req *subreq = NULL;
3013         struct vfswrap_getxattrat_state *state = NULL;
3014         size_t max_threads = 0;
3015         bool have_per_thread_cwd = false;
3016         bool have_per_thread_creds = false;
3017         bool do_async = false;
3018
3019         req = tevent_req_create(mem_ctx, &state,
3020                                 struct vfswrap_getxattrat_state);
3021         if (req == NULL) {
3022                 return NULL;
3023         }
3024         *state = (struct vfswrap_getxattrat_state) {
3025                 .ev = ev,
3026                 .dir_fsp = dir_fsp,
3027                 .smb_fname = smb_fname,
3028                 .req = req,
3029         };
3030
3031         max_threads = pthreadpool_tevent_max_threads(dir_fsp->conn->sconn->pool);
3032         if (max_threads >= 1) {
3033                 /*
3034                  * We need a non sync threadpool!
3035                  */
3036                 have_per_thread_cwd = per_thread_cwd_supported();
3037         }
3038 #ifdef HAVE_LINUX_THREAD_CREDENTIALS
3039         have_per_thread_creds = true;
3040 #endif
3041         if (have_per_thread_cwd && have_per_thread_creds) {
3042                 do_async = true;
3043         }
3044
3045         SMBPROFILE_BYTES_ASYNC_START(syscall_asys_getxattrat, profile_p,
3046                                      state->profile_bytes, 0);
3047
3048         if (dir_fsp->fh->fd == -1) {
3049                 DBG_ERR("Need a valid directory fd\n");
3050                 tevent_req_error(req, EINVAL);
3051                 return tevent_req_post(req, ev);
3052         }
3053
3054         if (alloc_hint > 0) {
3055                 state->xattr_value = talloc_zero_array(state,
3056                                                        uint8_t,
3057                                                        alloc_hint);
3058                 if (tevent_req_nomem(state->xattr_value, req)) {
3059                         return tevent_req_post(req, ev);
3060                 }
3061         }
3062
3063         if (!do_async) {
3064                 vfswrap_getxattrat_do_sync(req);
3065                 return tevent_req_post(req, ev);
3066         }
3067
3068         /*
3069          * Now allocate all parameters from a memory context that won't go away
3070          * no matter what. These paremeters will get used in threads and we
3071          * can't reliably cancel threads, so all buffers passed to the threads
3072          * must not be freed before all referencing threads terminate.
3073          */
3074
3075         state->name = talloc_strdup(state, smb_fname->base_name);
3076         if (tevent_req_nomem(state->name, req)) {
3077                 return tevent_req_post(req, ev);
3078         }
3079
3080         state->xattr_name = talloc_strdup(state, xattr_name);
3081         if (tevent_req_nomem(state->xattr_name, req)) {
3082                 return tevent_req_post(req, ev);
3083         }
3084
3085         /*
3086          * This is a hot codepath so at first glance one might think we should
3087          * somehow optimize away the token allocation and do a
3088          * talloc_reference() or similar black magic instead. But due to the
3089          * talloc_stackframe pool per SMB2 request this should be a simple copy
3090          * without a malloc in most cases.
3091          */
3092         if (geteuid() == sec_initial_uid()) {
3093                 state->token = root_unix_token(state);
3094         } else {
3095                 state->token = copy_unix_token(
3096                                         state,
3097                                         dir_fsp->conn->session_info->unix_token);
3098         }
3099         if (tevent_req_nomem(state->token, req)) {
3100                 return tevent_req_post(req, ev);
3101         }
3102
3103         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
3104
3105         subreq = pthreadpool_tevent_job_send(
3106                         state,
3107                         ev,
3108                         dir_fsp->conn->sconn->pool,
3109                         vfswrap_getxattrat_do_async,
3110                         state);
3111         if (tevent_req_nomem(subreq, req)) {
3112                 return tevent_req_post(req, ev);
3113         }
3114         tevent_req_set_callback(subreq, vfswrap_getxattrat_done, req);
3115
3116         talloc_set_destructor(state, vfswrap_getxattrat_state_destructor);
3117
3118         return req;
3119 }
3120
3121 static void vfswrap_getxattrat_do_sync(struct tevent_req *req)
3122 {
3123         struct vfswrap_getxattrat_state *state = talloc_get_type_abort(
3124                 req, struct vfswrap_getxattrat_state);
3125         char *path = NULL;
3126         char *tofree = NULL;
3127         char pathbuf[PATH_MAX+1];
3128         size_t pathlen;
3129         int err;
3130
3131         pathlen = full_path_tos(state->dir_fsp->fsp_name->base_name,
3132                                 state->smb_fname->base_name,
3133                                 pathbuf,
3134                                 sizeof(pathbuf),
3135                                 &path,
3136                                 &tofree);
3137         if (pathlen == -1) {
3138                 tevent_req_error(req, ENOMEM);
3139                 return;
3140         }
3141
3142         state->xattr_size = getxattr(path,
3143                                      state->xattr_name,
3144                                      state->xattr_value,
3145                                      talloc_array_length(state->xattr_value));
3146         err = errno;
3147         TALLOC_FREE(tofree);
3148         if (state->xattr_size == -1) {
3149                 tevent_req_error(req, err);
3150                 return;
3151         }
3152
3153         tevent_req_done(req);
3154         return;
3155 }
3156
3157 static void vfswrap_getxattrat_do_async(void *private_data)
3158 {
3159         struct vfswrap_getxattrat_state *state = talloc_get_type_abort(
3160                 private_data, struct vfswrap_getxattrat_state);
3161         struct timespec start_time;
3162         struct timespec end_time;
3163         int ret;
3164
3165         PROFILE_TIMESTAMP(&start_time);
3166         SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
3167
3168         /*
3169          * Here we simulate a getxattrat()
3170          * call using fchdir();getxattr()
3171          */
3172
3173         per_thread_cwd_activate();
3174
3175         /* Become the correct credential on this thread. */
3176         ret = set_thread_credentials(state->token->uid,
3177                                      state->token->gid,
3178                                      (size_t)state->token->ngroups,
3179                                      state->token->groups);
3180         if (ret != 0) {
3181                 state->xattr_size = -1;
3182                 state->vfs_aio_state.error = errno;
3183                 goto end_profile;
3184         }
3185
3186         ret = fchdir(state->dir_fsp->fh->fd);
3187         if (ret == -1) {
3188                 state->xattr_size = -1;
3189                 state->vfs_aio_state.error = errno;
3190                 goto end_profile;
3191         }
3192
3193         state->xattr_size = getxattr(state->name,
3194                                      state->xattr_name,
3195                                      state->xattr_value,
3196                                      talloc_array_length(state->xattr_value));
3197         if (state->xattr_size == -1) {
3198                 state->vfs_aio_state.error = errno;
3199         }
3200
3201 end_profile:
3202         PROFILE_TIMESTAMP(&end_time);
3203         state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
3204         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
3205 }
3206
3207 static void vfswrap_getxattrat_done(struct tevent_req *subreq)
3208 {
3209         struct tevent_req *req = tevent_req_callback_data(
3210                 subreq, struct tevent_req);
3211         struct vfswrap_getxattrat_state *state = tevent_req_data(
3212                 req, struct vfswrap_getxattrat_state);
3213         int ret;
3214         bool ok;
3215
3216         /*
3217          * Make sure we run as the user again
3218          */
3219         ok = change_to_user_by_fsp(state->dir_fsp);
3220         SMB_ASSERT(ok);
3221
3222         ret = pthreadpool_tevent_job_recv(subreq);
3223         TALLOC_FREE(subreq);
3224         SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
3225         talloc_set_destructor(state, NULL);
3226         if (ret != 0) {
3227                 if (ret != EAGAIN) {
3228                         tevent_req_error(req, ret);
3229                         return;
3230                 }
3231                 /*
3232                  * If we get EAGAIN from pthreadpool_tevent_job_recv() this
3233                  * means the lower level pthreadpool failed to create a new
3234                  * thread. Fallback to sync processing in that case to allow
3235                  * some progress for the client.
3236                  */
3237                 vfswrap_getxattrat_do_sync(req);
3238                 return;
3239         }
3240
3241         if (state->xattr_size == -1) {
3242                 tevent_req_error(req, state->vfs_aio_state.error);
3243                 return;
3244         }
3245
3246         if (state->xattr_value == NULL) {
3247                 /*
3248                  * The caller only wanted the size.
3249                  */
3250                 tevent_req_done(req);
3251                 return;
3252         }
3253
3254         /*
3255          * shrink the buffer to the returned size.
3256          * (can't fail). It means NULL if size is 0.
3257          */
3258         state->xattr_value = talloc_realloc(state,
3259                                             state->xattr_value,
3260                                             uint8_t,
3261                                             state->xattr_size);
3262
3263         tevent_req_done(req);
3264 }
3265
3266 static ssize_t vfswrap_getxattrat_recv(struct tevent_req *req,
3267                                        struct vfs_aio_state *aio_state,
3268                                        TALLOC_CTX *mem_ctx,
3269                                        uint8_t **xattr_value)
3270 {
3271         struct vfswrap_getxattrat_state *state = tevent_req_data(
3272                 req, struct vfswrap_getxattrat_state);
3273         ssize_t xattr_size;
3274
3275         if (tevent_req_is_unix_error(req, &aio_state->error)) {
3276                 tevent_req_received(req);
3277                 return -1;
3278         }
3279
3280         *aio_state = state->vfs_aio_state;
3281         xattr_size = state->xattr_size;
3282         if (xattr_value != NULL) {
3283                 *xattr_value = talloc_move(mem_ctx, &state->xattr_value);
3284         }
3285
3286         tevent_req_received(req);
3287         return xattr_size;
3288 }
3289
3290 static ssize_t vfswrap_fgetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size)
3291 {
3292         return fgetxattr(fsp->fh->fd, name, value, size);
3293 }
3294
3295 static ssize_t vfswrap_listxattr(struct vfs_handle_struct *handle,
3296                         const struct smb_filename *smb_fname,
3297                         char *list,
3298                         size_t size)
3299 {
3300         return listxattr(smb_fname->base_name, list, size);
3301 }
3302
3303 static ssize_t vfswrap_flistxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size)
3304 {
3305         return flistxattr(fsp->fh->fd, list, size);
3306 }
3307
3308 static int vfswrap_removexattr(struct vfs_handle_struct *handle,
3309                                 const struct smb_filename *smb_fname,
3310                                 const char *name)
3311 {
3312         return removexattr(smb_fname->base_name, name);
3313 }
3314
3315 static int vfswrap_fremovexattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name)
3316 {
3317         return fremovexattr(fsp->fh->fd, name);
3318 }
3319
3320 static int vfswrap_setxattr(struct vfs_handle_struct *handle,
3321                                 const struct smb_filename *smb_fname,
3322                                 const char *name,
3323                                 const void *value,
3324                                 size_t size,
3325                                 int flags)
3326 {
3327         return setxattr(smb_fname->base_name, name, value, size, flags);
3328 }
3329
3330 static int vfswrap_fsetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags)
3331 {
3332         return fsetxattr(fsp->fh->fd, name, value, size, flags);
3333 }
3334
3335 static bool vfswrap_aio_force(struct vfs_handle_struct *handle, struct files_struct *fsp)
3336 {
3337         return false;
3338 }
3339
3340 static bool vfswrap_is_offline(struct vfs_handle_struct *handle,
3341                                const struct smb_filename *fname,
3342                                SMB_STRUCT_STAT *sbuf)
3343 {
3344         NTSTATUS status;
3345         char *path;
3346         bool offline = false;
3347
3348         if (ISDOT(fname->base_name) || ISDOTDOT(fname->base_name)) {
3349                 return false;
3350         }
3351
3352         if (!lp_dmapi_support(SNUM(handle->conn)) || !dmapi_have_session()) {
3353 #if defined(ENOTSUP)
3354                 errno = ENOTSUP;
3355 #endif
3356                 return false;
3357         }
3358
3359         status = get_full_smb_filename(talloc_tos(), fname, &path);
3360         if (!NT_STATUS_IS_OK(status)) {
3361                 errno = map_errno_from_nt_status(status);
3362                 return false;
3363         }
3364
3365         offline = (dmapi_file_flags(path) & FILE_ATTRIBUTE_OFFLINE) != 0;
3366
3367         TALLOC_FREE(path);
3368
3369         return offline;
3370 }
3371
3372 static NTSTATUS vfswrap_durable_cookie(struct vfs_handle_struct *handle,
3373                                        struct files_struct *fsp,
3374                                        TALLOC_CTX *mem_ctx,
3375                                        DATA_BLOB *cookie)
3376 {
3377         return vfs_default_durable_cookie(fsp, mem_ctx, cookie);
3378 }
3379
3380 static NTSTATUS vfswrap_durable_disconnect(struct vfs_handle_struct *handle,
3381                                            struct files_struct *fsp,
3382                                            const DATA_BLOB old_cookie,
3383                                            TALLOC_CTX *mem_ctx,
3384                                            DATA_BLOB *new_cookie)
3385 {
3386         return vfs_default_durable_disconnect(fsp, old_cookie, mem_ctx,
3387                                               new_cookie);
3388 }
3389
3390 static NTSTATUS vfswrap_durable_reconnect(struct vfs_handle_struct *handle,
3391                                           struct smb_request *smb1req,
3392                                           struct smbXsrv_open *op,
3393                                           const DATA_BLOB old_cookie,
3394                                           TALLOC_CTX *mem_ctx,
3395                                           struct files_struct **fsp,
3396                                           DATA_BLOB *new_cookie)
3397 {
3398         return vfs_default_durable_reconnect(handle->conn, smb1req, op,
3399                                              old_cookie, mem_ctx,
3400                                              fsp, new_cookie);
3401 }
3402
3403 static struct vfs_fn_pointers vfs_default_fns = {
3404         /* Disk operations */
3405
3406         .connect_fn = vfswrap_connect,
3407         .disconnect_fn = vfswrap_disconnect,
3408         .disk_free_fn = vfswrap_disk_free,
3409         .get_quota_fn = vfswrap_get_quota,
3410         .set_quota_fn = vfswrap_set_quota,
3411         .get_shadow_copy_data_fn = vfswrap_get_shadow_copy_data,
3412         .statvfs_fn = vfswrap_statvfs,
3413         .fs_capabilities_fn = vfswrap_fs_capabilities,
3414         .get_dfs_referrals_fn = vfswrap_get_dfs_referrals,
3415         .snap_check_path_fn = vfswrap_snap_check_path,
3416         .snap_create_fn = vfswrap_snap_create,
3417         .snap_delete_fn = vfswrap_snap_delete,
3418
3419         /* Directory operations */
3420
3421         .opendir_fn = vfswrap_opendir,
3422         .fdopendir_fn = vfswrap_fdopendir,
3423         .readdir_fn = vfswrap_readdir,
3424         .readdir_attr_fn = vfswrap_readdir_attr,
3425         .seekdir_fn = vfswrap_seekdir,
3426         .telldir_fn = vfswrap_telldir,
3427         .rewind_dir_fn = vfswrap_rewinddir,
3428         .mkdir_fn = vfswrap_mkdir,
3429         .rmdir_fn = vfswrap_rmdir,
3430         .closedir_fn = vfswrap_closedir,
3431
3432         /* File operations */
3433
3434         .open_fn = vfswrap_open,
3435         .create_file_fn = vfswrap_create_file,
3436         .close_fn = vfswrap_close,
3437         .pread_fn = vfswrap_pread,
3438         .pread_send_fn = vfswrap_pread_send,
3439         .pread_recv_fn = vfswrap_pread_recv,
3440         .pwrite_fn = vfswrap_pwrite,
3441         .pwrite_send_fn = vfswrap_pwrite_send,
3442         .pwrite_recv_fn = vfswrap_pwrite_recv,
3443         .lseek_fn = vfswrap_lseek,
3444         .sendfile_fn = vfswrap_sendfile,
3445         .recvfile_fn = vfswrap_recvfile,
3446         .renameat_fn = vfswrap_renameat,
3447         .fsync_send_fn = vfswrap_fsync_send,
3448         .fsync_recv_fn = vfswrap_fsync_recv,
3449         .stat_fn = vfswrap_stat,
3450         .fstat_fn = vfswrap_fstat,
3451         .lstat_fn = vfswrap_lstat,
3452         .get_alloc_size_fn = vfswrap_get_alloc_size,
3453         .unlink_fn = vfswrap_unlink,
3454         .chmod_fn = vfswrap_chmod,
3455         .fchmod_fn = vfswrap_fchmod,
3456         .chown_fn = vfswrap_chown,
3457         .fchown_fn = vfswrap_fchown,
3458         .lchown_fn = vfswrap_lchown,
3459         .chdir_fn = vfswrap_chdir,
3460         .getwd_fn = vfswrap_getwd,
3461         .ntimes_fn = vfswrap_ntimes,
3462         .ftruncate_fn = vfswrap_ftruncate,
3463         .fallocate_fn = vfswrap_fallocate,
3464         .lock_fn = vfswrap_lock,
3465         .kernel_flock_fn = vfswrap_kernel_flock,
3466         .linux_setlease_fn = vfswrap_linux_setlease,
3467         .getlock_fn = vfswrap_getlock,
3468         .symlink_fn = vfswrap_symlink,
3469         .readlink_fn = vfswrap_readlink,
3470         .link_fn = vfswrap_link,
3471         .mknod_fn = vfswrap_mknod,
3472         .realpath_fn = vfswrap_realpath,
3473         .chflags_fn = vfswrap_chflags,
3474         .file_id_create_fn = vfswrap_file_id_create,
3475         .fs_file_id_fn = vfswrap_fs_file_id,
3476         .streaminfo_fn = vfswrap_streaminfo,
3477         .get_real_filename_fn = vfswrap_get_real_filename,
3478         .connectpath_fn = vfswrap_connectpath,
3479         .brl_lock_windows_fn = vfswrap_brl_lock_windows,
3480         .brl_unlock_windows_fn = vfswrap_brl_unlock_windows,
3481         .strict_lock_check_fn = vfswrap_strict_lock_check,
3482         .translate_name_fn = vfswrap_translate_name,
3483         .fsctl_fn = vfswrap_fsctl,
3484         .set_dos_attributes_fn = vfswrap_set_dos_attributes,
3485         .fset_dos_attributes_fn = vfswrap_fset_dos_attributes,
3486         .get_dos_attributes_fn = vfswrap_get_dos_attributes,
3487         .get_dos_attributes_send_fn = vfswrap_get_dos_attributes_send,
3488         .get_dos_attributes_recv_fn = vfswrap_get_dos_attributes_recv,
3489         .fget_dos_attributes_fn = vfswrap_fget_dos_attributes,
3490         .offload_read_send_fn = vfswrap_offload_read_send,
3491         .offload_read_recv_fn = vfswrap_offload_read_recv,
3492         .offload_write_send_fn = vfswrap_offload_write_send,
3493         .offload_write_recv_fn = vfswrap_offload_write_recv,
3494         .get_compression_fn = vfswrap_get_compression,
3495         .set_compression_fn = vfswrap_set_compression,
3496
3497         /* NT ACL operations. */
3498
3499         .fget_nt_acl_fn = vfswrap_fget_nt_acl,
3500         .get_nt_acl_fn = vfswrap_get_nt_acl,
3501         .fset_nt_acl_fn = vfswrap_fset_nt_acl,
3502         .audit_file_fn = vfswrap_audit_file,
3503
3504         /* POSIX ACL operations. */
3505
3506         .sys_acl_get_file_fn = vfswrap_sys_acl_get_file,
3507         .sys_acl_get_fd_fn = vfswrap_sys_acl_get_fd,
3508         .sys_acl_blob_get_file_fn = posix_sys_acl_blob_get_file,
3509         .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
3510         .sys_acl_set_file_fn = vfswrap_sys_acl_set_file,
3511         .sys_acl_set_fd_fn = vfswrap_sys_acl_set_fd,
3512         .sys_acl_delete_def_file_fn = vfswrap_sys_acl_delete_def_file,
3513
3514         /* EA operations. */
3515         .getxattr_fn = vfswrap_getxattr,
3516         .getxattrat_send_fn = vfswrap_getxattrat_send,
3517         .getxattrat_recv_fn = vfswrap_getxattrat_recv,
3518         .fgetxattr_fn = vfswrap_fgetxattr,
3519         .listxattr_fn = vfswrap_listxattr,
3520         .flistxattr_fn = vfswrap_flistxattr,
3521         .removexattr_fn = vfswrap_removexattr,
3522         .fremovexattr_fn = vfswrap_fremovexattr,
3523         .setxattr_fn = vfswrap_setxattr,
3524         .fsetxattr_fn = vfswrap_fsetxattr,
3525
3526         /* aio operations */
3527         .aio_force_fn = vfswrap_aio_force,
3528
3529         /* durable handle operations */
3530         .durable_cookie_fn = vfswrap_durable_cookie,
3531         .durable_disconnect_fn = vfswrap_durable_disconnect,
3532         .durable_reconnect_fn = vfswrap_durable_reconnect,
3533 };
3534
3535 static_decl_vfs;
3536 NTSTATUS vfs_default_init(TALLOC_CTX *ctx)
3537 {
3538         /*
3539          * Here we need to implement every call!
3540          *
3541          * As this is the end of the vfs module chain.
3542          */
3543         smb_vfs_assert_all_fns(&vfs_default_fns, DEFAULT_VFS_MODULE_NAME);
3544         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
3545                                 DEFAULT_VFS_MODULE_NAME, &vfs_default_fns);
3546 }
3547
3548