source3/modules/vfs_acl_xattr.c

   1 /*
   2  * Store Windows ACLs in xattrs.
   3  *
   4  * Copyright (C) Volker Lendecke, 2008
   5  * Copyright (C) Jeremy Allison, 2008
   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 /* NOTE: This is an experimental module, not yet finished. JRA. */
  22
  23 #include "includes.h"
  24 #include "librpc/gen_ndr/xattr.h"
  25 #include "librpc/gen_ndr/ndr_xattr.h"
  26
  27 #undef DBGC_CLASS
  28 #define DBGC_CLASS DBGC_VFS
  29
  30 static NTSTATUS parse_acl_blob(const DATA_BLOB *pblob,
  31                                 const struct timespec cts,
  32                                 uint32 security_info,
  33                                 struct security_descriptor **ppdesc)
  34 {
  35         TALLOC_CTX *ctx = talloc_tos();
  36         struct xattr_NTACL xacl;
  37         enum ndr_err_code ndr_err;
  38         size_t sd_size;
  39
  40         ndr_err = ndr_pull_struct_blob(pblob, ctx, NULL, &xacl,
  41                         (ndr_pull_flags_fn_t)ndr_pull_xattr_NTACL);
  42
  43         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
  44                 DEBUG(5, ("parse_acl_blob: ndr_pull_xattr_NTACL failed: %s\n",
  45                         ndr_errstr(ndr_err)));
  46                 return ndr_map_error2ntstatus(ndr_err);;
  47         }
  48
  49         if (xacl.version != 2) {
  50                 return NT_STATUS_REVISION_MISMATCH;
  51         }
  52
  53 #if 0
  54         {
  55                 struct timespec ts;
  56                 /* Arg. This doesn't work. Too many activities
  57                  * change the ctime. May have to roll back to
  58                  * version 1.
  59                  */
  60                 /*
  61                  * Check that the ctime timestamp is ealier
  62                  * than the stored timestamp.
  63                  */
  64
  65                 ts = nt_time_to_unix_timespec(&xacl.info.sd_ts->last_changed);
  66
  67                 if (timespec_compare(&cts, &ts) > 0) {
  68                         DEBUG(5, ("parse_acl_blob: stored ACL out of date "
  69                                 "(%s > %s.\n",
  70                                 timestring(ctx, cts.tv_sec),
  71                                 timestring(ctx, ts.tv_sec)));
  72                         return NT_STATUS_EA_CORRUPT_ERROR;
  73                 }
  74         }
  75 #endif
  76
  77         *ppdesc = make_sec_desc(ctx, SEC_DESC_REVISION, SEC_DESC_SELF_RELATIVE,
  78                         (security_info & OWNER_SECURITY_INFORMATION)
  79                         ? xacl.info.sd_ts->sd->owner_sid : NULL,
  80                         (security_info & GROUP_SECURITY_INFORMATION)
  81                         ? xacl.info.sd_ts->sd->group_sid : NULL,
  82                         (security_info & SACL_SECURITY_INFORMATION)
  83                         ? xacl.info.sd_ts->sd->sacl : NULL,
  84                         (security_info & DACL_SECURITY_INFORMATION)
  85                         ? xacl.info.sd_ts->sd->dacl : NULL,
  86                         &sd_size);
  87
  88         TALLOC_FREE(xacl.info.sd);
  89
  90         return (*ppdesc != NULL) ? NT_STATUS_OK : NT_STATUS_NO_MEMORY;
  91 }
  92
  93 static NTSTATUS get_acl_blob(TALLOC_CTX *ctx,
  94                         vfs_handle_struct *handle,
  95                         files_struct *fsp,
  96                         const char *name,
  97                         DATA_BLOB *pblob)
  98 {
  99         size_t size = 1024;
 100         uint8_t *val = NULL;
 101         uint8_t *tmp;
 102         ssize_t sizeret;
 103         int saved_errno = 0;
 104
 105         ZERO_STRUCTP(pblob);
 106
 107   again:
 108
 109         tmp = TALLOC_REALLOC_ARRAY(ctx, val, uint8_t, size);
 110         if (tmp == NULL) {
 111                 TALLOC_FREE(val);
 112                 return NT_STATUS_NO_MEMORY;
 113         }
 114         val = tmp;
 115
 116         become_root();
 117         if (fsp && fsp->fh->fd != -1) {
 118                 sizeret = SMB_VFS_FGETXATTR(fsp, XATTR_NTACL_NAME, val, size);
 119         } else {
 120                 sizeret = SMB_VFS_GETXATTR(handle->conn, name,
 121                                         XATTR_NTACL_NAME, val, size);
 122         }
 123         if (sizeret == -1) {
 124                 saved_errno = errno;
 125         }
 126         unbecome_root();
 127
 128         /* Max ACL size is 65536 bytes. */
 129         if (sizeret == -1) {
 130                 errno = saved_errno;
 131                 if ((errno == ERANGE) && (size != 65536)) {
 132                         /* Too small, try again. */
 133                         size = 65536;
 134                         goto again;
 135                 }
 136
 137                 /* Real error - exit here. */
 138                 TALLOC_FREE(val);
 139                 return map_nt_error_from_unix(errno);
 140         }
 141
 142         pblob->data = val;
 143         pblob->length = sizeret;
 144         return NT_STATUS_OK;
 145 }
 146
 147 static NTSTATUS create_acl_blob(const struct security_descriptor *psd, DATA_BLOB *pblob)
 148 {
 149         struct xattr_NTACL xacl;
 150         struct security_descriptor_timestamp sd_ts;
 151         enum ndr_err_code ndr_err;
 152         TALLOC_CTX *ctx = talloc_tos();
 153         struct timespec curr = timespec_current();
 154
 155         ZERO_STRUCT(xacl);
 156         ZERO_STRUCT(sd_ts);
 157
 158         /* Horrid hack as setting an xattr changes the ctime
 159          * on Linux. This gives a race of 1 second during
 160          * which we would not see a POSIX ACL set.
 161          */
 162         curr.tv_sec += 1;
 163
 164         xacl.version = 2;
 165         xacl.info.sd_ts = &sd_ts;
 166         xacl.info.sd_ts->sd = CONST_DISCARD(struct security_descriptor *, psd);
 167         unix_timespec_to_nt_time(&xacl.info.sd_ts->last_changed, curr);
 168
 169         DEBUG(10, ("create_acl_blob: timestamp stored as %s\n",
 170                 timestring(ctx, curr.tv_sec) ));
 171
 172         ndr_err = ndr_push_struct_blob(
 173                         pblob, ctx, NULL, &xacl,
 174                         (ndr_push_flags_fn_t)ndr_push_xattr_NTACL);
 175
 176         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 177                 DEBUG(5, ("create_acl_blob: ndr_push_xattr_NTACL failed: %s\n",
 178                         ndr_errstr(ndr_err)));
 179                 return ndr_map_error2ntstatus(ndr_err);;
 180         }
 181
 182         return NT_STATUS_OK;
 183 }
 184
 185 static NTSTATUS store_acl_blob_fsp(files_struct *fsp,
 186                                 DATA_BLOB *pblob)
 187 {
 188         int ret;
 189         int saved_errno = 0;
 190
 191         DEBUG(10,("store_acl_blob_fsp: storing blob length %u on file %s\n",
 192                         (unsigned int)pblob->length, fsp->fsp_name));
 193
 194         become_root();
 195         if (fsp->fh->fd != -1) {
 196                 ret = SMB_VFS_FSETXATTR(fsp, XATTR_NTACL_NAME,
 197                         pblob->data, pblob->length, 0);
 198         } else {
 199                 ret = SMB_VFS_SETXATTR(fsp->conn, fsp->fsp_name,
 200                                 XATTR_NTACL_NAME,
 201                                 pblob->data, pblob->length, 0);
 202         }
 203         if (ret) {
 204                 saved_errno = errno;
 205         }
 206         unbecome_root();
 207         if (ret) {
 208                 errno = saved_errno;
 209                 DEBUG(5, ("store_acl_blob_fsp: setting attr failed for file %s"
 210                         "with error %s\n",
 211                         fsp->fsp_name,
 212                         strerror(errno) ));
 213                 return map_nt_error_from_unix(errno);
 214         }
 215         return NT_STATUS_OK;
 216 }
 217
 218 static NTSTATUS store_acl_blob_pathname(connection_struct *conn,
 219                                         const char *fname,
 220                                         DATA_BLOB *pblob)
 221 {
 222         int ret;
 223         int saved_errno = 0;
 224
 225         DEBUG(10,("store_acl_blob_pathname: storing blob "
 226                         "length %u on file %s\n",
 227                         (unsigned int)pblob->length, fname));
 228
 229         become_root();
 230         ret = SMB_VFS_SETXATTR(conn, fname,
 231                                 XATTR_NTACL_NAME,
 232                                 pblob->data, pblob->length, 0);
 233         if (ret) {
 234                 saved_errno = errno;
 235         }
 236         unbecome_root();
 237         if (ret) {
 238                 errno = saved_errno;
 239                 DEBUG(5, ("store_acl_blob_pathname: setting attr failed "
 240                         "for file %s with error %s\n",
 241                         fname,
 242                         strerror(errno) ));
 243                 return map_nt_error_from_unix(errno);
 244         }
 245         return NT_STATUS_OK;
 246 }
 247
 248
 249 static NTSTATUS get_nt_acl_xattr_internal(vfs_handle_struct *handle,
 250                                         files_struct *fsp,
 251                                         const char *name,
 252                                         uint32 security_info,
 253                                         struct security_descriptor **ppdesc)
 254 {
 255         TALLOC_CTX *ctx = talloc_tos();
 256         DATA_BLOB blob;
 257         SMB_STRUCT_STAT sbuf;
 258         NTSTATUS status;
 259
 260         if (fsp && name == NULL) {
 261                 name = fsp->fsp_name;
 262         }
 263
 264         DEBUG(10, ("get_nt_acl_xattr_internal: name=%s\n", name));
 265
 266         status = get_acl_blob(ctx, handle, fsp, name, &blob);
 267         if (!NT_STATUS_IS_OK(status)) {
 268                 DEBUG(10, ("get_acl_blob returned %s\n", nt_errstr(status)));
 269                 return status;
 270         }
 271
 272         if (fsp && fsp->fh->fd != -1) {
 273                 if (SMB_VFS_FSTAT(fsp, &sbuf) == -1) {
 274                         return map_nt_error_from_unix(errno);
 275                 }
 276         } else {
 277                 if (SMB_VFS_STAT(handle->conn, name, &sbuf) == -1) {
 278                         return map_nt_error_from_unix(errno);
 279                 }
 280         }
 281
 282         status = parse_acl_blob(&blob, get_ctimespec(&sbuf),
 283                         security_info, ppdesc);
 284         if (!NT_STATUS_IS_OK(status)) {
 285                 DEBUG(10, ("parse_acl_blob returned %s\n",
 286                                 nt_errstr(status)));
 287                 return status;
 288         }
 289
 290         TALLOC_FREE(blob.data);
 291         return status;
 292 }
 293
 294 /*********************************************************************
 295  Create a default security descriptor for a file in case no inheritance
 296  exists. All permissions to the owner and SYSTEM.
 297 *********************************************************************/
 298
 299 static struct security_descriptor *default_file_sd(TALLOC_CTX *mem_ctx,
 300                                                 SMB_STRUCT_STAT *psbuf)
 301 {
 302         struct dom_sid owner_sid, group_sid;
 303         size_t sd_size;
 304         struct security_ace *pace = NULL;
 305         struct security_acl *pacl = NULL;
 306
 307         uid_to_sid(&owner_sid, psbuf->st_uid);
 308         gid_to_sid(&group_sid, psbuf->st_gid);
 309
 310         pace = TALLOC_ARRAY(mem_ctx, struct security_ace, 2);
 311         if (!pace) {
 312                 return NULL;
 313         }
 314
 315         init_sec_ace(&pace[0], &owner_sid, SEC_ACE_TYPE_ACCESS_ALLOWED,
 316                         SEC_RIGHTS_FILE_ALL, 0);
 317         init_sec_ace(&pace[1], &global_sid_System, SEC_ACE_TYPE_ACCESS_ALLOWED,
 318                         SEC_RIGHTS_FILE_ALL, 0);
 319
 320         pacl = make_sec_acl(mem_ctx,
 321                                 NT4_ACL_REVISION,
 322                                 2,
 323                                 pace);
 324         if (!pacl) {
 325                 return NULL;
 326         }
 327         return make_sec_desc(mem_ctx,
 328                         SECURITY_DESCRIPTOR_REVISION_1,
 329                         SEC_DESC_SELF_RELATIVE|SEC_DESC_DACL_PRESENT|
 330                                 SEC_DESC_DACL_DEFAULTED,
 331                         &owner_sid,
 332                         &group_sid,
 333                         NULL,
 334                         pacl,
 335                         &sd_size);
 336 }
 337
 338 /*********************************************************************
 339 *********************************************************************/
 340
 341 static NTSTATUS inherit_new_acl(vfs_handle_struct *handle,
 342                                         const char *fname,
 343                                         files_struct *fsp,
 344                                         bool container)
 345 {
 346         TALLOC_CTX *ctx = talloc_tos();
 347         NTSTATUS status;
 348         struct security_descriptor *parent_desc = NULL;
 349         struct security_descriptor *psd = NULL;
 350         DATA_BLOB blob;
 351         size_t size;
 352         char *parent_name;
 353
 354         if (!parent_dirname_talloc(ctx,
 355                                 fname,
 356                                 &parent_name,
 357                                 NULL)) {
 358                 return NT_STATUS_NO_MEMORY;
 359         }
 360
 361         DEBUG(10,("inherit_new_acl: check directory %s\n",
 362                         parent_name));
 363
 364         status = get_nt_acl_xattr_internal(handle,
 365                                         NULL,
 366                                         parent_name,
 367                                         DACL_SECURITY_INFORMATION,
 368                                         &parent_desc);
 369         if (NT_STATUS_IS_OK(status)) {
 370                 /* Create an inherited descriptor from the parent. */
 371                 status = se_create_child_secdesc(ctx,
 372                                 &psd,
 373                                 &size,
 374                                 parent_desc,
 375                                 &handle->conn->server_info->ptok->user_sids[PRIMARY_USER_SID_INDEX],
 376                                 &handle->conn->server_info->ptok->user_sids[PRIMARY_GROUP_SID_INDEX],
 377                                 container);
 378                 if (!NT_STATUS_IS_OK(status)) {
 379                         return status;
 380                 }
 381         } else {
 382                 DEBUG(10,("inherit_new_acl: directory %s failed "
 383                         "to get acl %s\n",
 384                         parent_name,
 385                         nt_errstr(status) ));
 386         }
 387
 388         if (!psd || psd->dacl == NULL) {
 389                 SMB_STRUCT_STAT sbuf;
 390                 int ret;
 391
 392                 TALLOC_FREE(psd);
 393                 if (fsp && !fsp->is_directory && fsp->fh->fd != -1) {
 394                         ret = SMB_VFS_FSTAT(fsp, &sbuf);
 395                 } else {
 396                         ret = SMB_VFS_STAT(handle->conn,fname, &sbuf);
 397                 }
 398                 if (ret == -1) {
 399                         return map_nt_error_from_unix(errno);
 400                 }
 401                 psd = default_file_sd(ctx, &sbuf);
 402                 if (!psd) {
 403                         return NT_STATUS_NO_MEMORY;
 404                 }
 405         }
 406
 407         status = create_acl_blob(psd, &blob);
 408         if (!NT_STATUS_IS_OK(status)) {
 409                 return status;
 410         }
 411         if (fsp) {
 412                 return store_acl_blob_fsp(fsp, &blob);
 413         } else {
 414                 return store_acl_blob_pathname(handle->conn, fname, &blob);
 415         }
 416 }
 417
 418 /*********************************************************************
 419  Check ACL on open. For new files inherit from parent directory.
 420 *********************************************************************/
 421
 422 static int open_acl_xattr(vfs_handle_struct *handle,
 423                                         const char *fname,
 424                                         files_struct *fsp,
 425                                         int flags,
 426                                         mode_t mode)
 427 {
 428         uint32_t access_granted = 0;
 429         struct security_descriptor *pdesc = NULL;
 430         bool file_existed = true;
 431         NTSTATUS status = get_nt_acl_xattr_internal(handle,
 432                                         NULL,
 433                                         fname,
 434                                         (OWNER_SECURITY_INFORMATION |
 435                                          GROUP_SECURITY_INFORMATION |
 436                                          DACL_SECURITY_INFORMATION),
 437                                         &pdesc);
 438         if (NT_STATUS_IS_OK(status)) {
 439                 /* See if we can access it. */
 440                 status = smb1_file_se_access_check(pdesc,
 441                                         handle->conn->server_info->ptok,
 442                                         fsp->access_mask,
 443                                         &access_granted);
 444                 if (!NT_STATUS_IS_OK(status)) {
 445                         DEBUG(10,("open_acl_xattr: file %s open "
 446                                 "refused with error %s\n",
 447                                 fname,
 448                                 nt_errstr(status) ));
 449                         errno = map_errno_from_nt_status(status);
 450                         return -1;
 451                 }
 452         } else if (NT_STATUS_EQUAL(status,NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
 453                 file_existed = false;
 454         }
 455
 456         DEBUG(10,("open_acl_xattr: get_nt_acl_attr_internal for "
 457                 "file %s returned %s\n",
 458                 fname,
 459                 nt_errstr(status) ));
 460
 461         fsp->fh->fd = SMB_VFS_NEXT_OPEN(handle, fname, fsp, flags, mode);
 462
 463         if (!file_existed && fsp->fh->fd != -1) {
 464                 /* File was created. Inherit from parent directory. */
 465                 string_set(&fsp->fsp_name, fname);
 466                 inherit_new_acl(handle, fname, fsp, false);
 467         }
 468
 469         return fsp->fh->fd;
 470 }
 471
 472 static int mkdir_acl_xattr(vfs_handle_struct *handle, const char *path, mode_t mode)
 473 {
 474         int ret = SMB_VFS_NEXT_MKDIR(handle, path, mode);
 475
 476         if (ret == -1) {
 477                 return ret;
 478         }
 479         /* New directory - inherit from parent. */
 480         inherit_new_acl(handle, path, NULL, true);
 481         return ret;
 482 }
 483
 484 static NTSTATUS fget_nt_acl_xattr(vfs_handle_struct *handle, files_struct *fsp,
 485         uint32 security_info, struct security_descriptor **ppdesc)
 486 {
 487         NTSTATUS status = get_nt_acl_xattr_internal(handle, fsp,
 488                                 NULL, security_info, ppdesc);
 489         if (NT_STATUS_IS_OK(status)) {
 490                 if (DEBUGLEVEL >= 10) {
 491                         DEBUG(10,("fget_nt_acl_xattr: returning xattr sd for file %s\n",
 492                                 fsp->fsp_name));
 493                         NDR_PRINT_DEBUG(security_descriptor, *ppdesc);
 494                 }
 495                 return NT_STATUS_OK;
 496         }
 497         return SMB_VFS_NEXT_FGET_NT_ACL(handle, fsp,
 498                         security_info, ppdesc);
 499 }
 500
 501 static NTSTATUS get_nt_acl_xattr(vfs_handle_struct *handle,
 502         const char *name, uint32 security_info, struct security_descriptor **ppdesc)
 503 {
 504         NTSTATUS status = get_nt_acl_xattr_internal(handle, NULL,
 505                                 name, security_info, ppdesc);
 506         if (NT_STATUS_IS_OK(status)) {
 507                 if (DEBUGLEVEL >= 10) {
 508                         DEBUG(10,("get_nt_acl_xattr: returning xattr sd for file %s\n",
 509                                 name));
 510                         NDR_PRINT_DEBUG(security_descriptor, *ppdesc);
 511                 }
 512                 return NT_STATUS_OK;
 513         }
 514         return SMB_VFS_NEXT_GET_NT_ACL(handle, name,
 515                         security_info, ppdesc);
 516 }
 517
 518 static NTSTATUS fset_nt_acl_xattr(vfs_handle_struct *handle, files_struct *fsp,
 519         uint32 security_info_sent, const struct security_descriptor *psd)
 520 {
 521         NTSTATUS status;
 522         DATA_BLOB blob;
 523
 524         if (DEBUGLEVEL >= 10) {
 525                 DEBUG(10,("fset_nt_acl_xattr: incoming sd for file %s\n",
 526                         fsp->fsp_name));
 527                 NDR_PRINT_DEBUG(security_descriptor,
 528                         CONST_DISCARD(struct security_descriptor *,psd));
 529         }
 530
 531         if (!psd->owner_sid && !psd->group_sid && !(psd->type & SEC_DESC_DACL_PRESENT)) {
 532                 return NT_STATUS_OK;
 533         }
 534
 535         status = SMB_VFS_NEXT_FSET_NT_ACL(handle, fsp, security_info_sent, psd);
 536         if (!NT_STATUS_IS_OK(status)) {
 537                 return status;
 538         }
 539
 540         /* Ensure owner and group are set. */
 541         if (!psd->owner_sid || !psd->group_sid) {
 542                 int ret;
 543                 SMB_STRUCT_STAT sbuf;
 544                 DOM_SID owner_sid, group_sid;
 545                 struct security_descriptor *nc_psd = dup_sec_desc(talloc_tos(), psd);
 546
 547                 if (!nc_psd) {
 548                         return NT_STATUS_OK;
 549                 }
 550                 if (fsp->is_directory || fsp->fh->fd == -1) {
 551                         ret = SMB_VFS_STAT(fsp->conn,fsp->fsp_name, &sbuf);
 552                 } else {
 553                         ret = SMB_VFS_FSTAT(fsp, &sbuf);
 554                 }
 555                 if (ret == -1) {
 556                         /* Lower level acl set succeeded,
 557                          * so still return OK. */
 558                         return NT_STATUS_OK;
 559                 }
 560                 create_file_sids(&sbuf, &owner_sid, &group_sid);
 561                 /* This is safe as nc_psd is discarded at fn exit. */
 562                 nc_psd->owner_sid = &owner_sid;
 563                 nc_psd->group_sid = &group_sid;
 564                 security_info_sent |= (OWNER_SECURITY_INFORMATION|GROUP_SECURITY_INFORMATION);
 565                 psd = nc_psd;
 566         }
 567
 568         if ((security_info_sent & DACL_SECURITY_INFORMATION) &&
 569                         psd->dacl != NULL &&
 570                         (psd->type & (SE_DESC_DACL_AUTO_INHERITED|
 571                                 SE_DESC_DACL_AUTO_INHERIT_REQ))==
 572                                 (SE_DESC_DACL_AUTO_INHERITED|
 573                                 SE_DESC_DACL_AUTO_INHERIT_REQ) ) {
 574                 struct security_descriptor *new_psd = NULL;
 575                 status = append_parent_acl(fsp, psd, &new_psd);
 576                 if (!NT_STATUS_IS_OK(status)) {
 577                         /* Lower level acl set succeeded,
 578                          * so still return OK. */
 579                         return NT_STATUS_OK;
 580                 }
 581                 psd = new_psd;
 582         }
 583
 584         if (DEBUGLEVEL >= 10) {
 585                 DEBUG(10,("fset_nt_acl_xattr: storing xattr sd for file %s\n",
 586                         fsp->fsp_name));
 587                 NDR_PRINT_DEBUG(security_descriptor,
 588                         CONST_DISCARD(struct security_descriptor *,psd));
 589         }
 590         create_acl_blob(psd, &blob);
 591         store_acl_blob_fsp(fsp, &blob);
 592
 593         return NT_STATUS_OK;
 594 }
 595
 596 /* VFS operations structure */
 597
 598 static vfs_op_tuple skel_op_tuples[] =
 599 {
 600         {SMB_VFS_OP(mkdir_acl_xattr), SMB_VFS_OP_MKDIR, SMB_VFS_LAYER_TRANSPARENT},
 601         {SMB_VFS_OP(open_acl_xattr),  SMB_VFS_OP_OPEN,  SMB_VFS_LAYER_TRANSPARENT},
 602
 603         /* NT File ACL operations */
 604
 605         {SMB_VFS_OP(fget_nt_acl_xattr),SMB_VFS_OP_FGET_NT_ACL,SMB_VFS_LAYER_TRANSPARENT},
 606         {SMB_VFS_OP(get_nt_acl_xattr), SMB_VFS_OP_GET_NT_ACL, SMB_VFS_LAYER_TRANSPARENT},
 607         {SMB_VFS_OP(fset_nt_acl_xattr),SMB_VFS_OP_FSET_NT_ACL,SMB_VFS_LAYER_TRANSPARENT},
 608
 609         {SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
 610 };
 611
 612 NTSTATUS vfs_acl_xattr_init(void)
 613 {
 614         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "acl_xattr", skel_op_tuples);
 615 }