source3/modules/vfs_xattr_tdb.c

   1 /*
   2  * Store posix-level xattrs in a tdb
   3  *
   4  * Copyright (C) Volker Lendecke, 2007
   5  * Copyright (C) Andrew Bartlett, 2012
   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/filesys.h"
  23 #include "smbd/smbd.h"
  24 #include "dbwrap/dbwrap.h"
  25 #include "dbwrap/dbwrap_open.h"
  26 #include "source3/lib/xattr_tdb.h"
  27 #include "lib/util/tevent_unix.h"
  28
  29 #undef DBGC_CLASS
  30 #define DBGC_CLASS DBGC_VFS
  31
  32 static bool xattr_tdb_init(int snum, TALLOC_CTX *mem_ctx, struct db_context **p_db);
  33
  34 static int xattr_tdb_get_file_id(struct vfs_handle_struct *handle,
  35                                 const char *path, struct file_id *id)
  36 {
  37         int ret;
  38         TALLOC_CTX *frame = talloc_stackframe();
  39         struct smb_filename *smb_fname;
  40
  41         smb_fname = synthetic_smb_fname(frame,
  42                                         path,
  43                                         NULL,
  44                                         NULL,
  45                                         0,
  46                                         0);
  47         if (smb_fname == NULL) {
  48                 TALLOC_FREE(frame);
  49                 errno = ENOMEM;
  50                 return -1;
  51         }
  52
  53         ret = SMB_VFS_NEXT_STAT(handle, smb_fname);
  54
  55         if (ret == -1) {
  56                 TALLOC_FREE(frame);
  57                 return -1;
  58         }
  59
  60         *id = SMB_VFS_NEXT_FILE_ID_CREATE(handle, &smb_fname->st);
  61         TALLOC_FREE(frame);
  62         return 0;
  63 }
  64
  65 static ssize_t xattr_tdb_getxattr(struct vfs_handle_struct *handle,
  66                                 const struct smb_filename *smb_fname,
  67                                 const char *name,
  68                                 void *value,
  69                                 size_t size)
  70 {
  71         struct file_id id;
  72         struct db_context *db;
  73         ssize_t xattr_size;
  74         int ret;
  75         DATA_BLOB blob;
  76         TALLOC_CTX *frame = talloc_stackframe();
  77
  78         SMB_VFS_HANDLE_GET_DATA(handle, db, struct db_context,
  79                                 if (!xattr_tdb_init(-1, frame, &db))
  80                                 {
  81                                         TALLOC_FREE(frame); return -1;
  82                                 });
  83
  84         ret = xattr_tdb_get_file_id(handle, smb_fname->base_name, &id);
  85         if (ret == -1) {
  86                 TALLOC_FREE(frame);
  87                 return -1;
  88         }
  89
  90         xattr_size = xattr_tdb_getattr(db, frame, &id, name, &blob);
  91         if (xattr_size < 0) {
  92                 errno = ENOATTR;
  93                 TALLOC_FREE(frame);
  94                 return -1;
  95         }
  96
  97         if (size == 0) {
  98                 TALLOC_FREE(frame);
  99                 return xattr_size;
 100         }
 101
 102         if (blob.length > size) {
 103                 TALLOC_FREE(frame);
 104                 errno = ERANGE;
 105                 return -1;
 106         }
 107         memcpy(value, blob.data, xattr_size);
 108         TALLOC_FREE(frame);
 109         return xattr_size;
 110 }
 111
 112 struct xattr_tdb_getxattrat_state {
 113         struct vfs_aio_state vfs_aio_state;
 114         ssize_t xattr_size;
 115         uint8_t *xattr_value;
 116 };
 117
 118 static struct tevent_req *xattr_tdb_getxattrat_send(
 119                         TALLOC_CTX *mem_ctx,
 120                         struct tevent_context *ev,
 121                         struct vfs_handle_struct *handle,
 122                         files_struct *dir_fsp,
 123                         const struct smb_filename *smb_fname,
 124                         const char *xattr_name,
 125                         size_t alloc_hint)
 126 {
 127         struct tevent_req *req = NULL;
 128         struct xattr_tdb_getxattrat_state *state = NULL;
 129         struct smb_filename *cwd = NULL;
 130         struct db_context *db = NULL;
 131         struct file_id id;
 132         int ret;
 133         int error;
 134         int cwd_ret;
 135         DATA_BLOB xattr_blob;
 136
 137         req = tevent_req_create(mem_ctx, &state,
 138                                 struct xattr_tdb_getxattrat_state);
 139         if (req == NULL) {
 140                 return NULL;
 141         }
 142         state->xattr_size = -1;
 143
 144         SMB_VFS_HANDLE_GET_DATA(handle, db, struct db_context,
 145                                 if (!xattr_tdb_init(-1, state, &db)) {
 146                                         tevent_req_error(req, EIO);
 147                                         return tevent_req_post(req, ev);
 148                                 });
 149
 150         cwd = SMB_VFS_GETWD(dir_fsp->conn, state);
 151         if (tevent_req_nomem(cwd, req)) {
 152                 return tevent_req_post(req, ev);
 153         }
 154
 155         ret = SMB_VFS_CHDIR(dir_fsp->conn, dir_fsp->fsp_name);
 156         if (ret != 0) {
 157                 tevent_req_error(req, errno);
 158                 return tevent_req_post(req, ev);
 159         }
 160
 161         ret = xattr_tdb_get_file_id(handle, smb_fname->base_name, &id);
 162         error = errno;
 163
 164         cwd_ret = SMB_VFS_CHDIR(dir_fsp->conn, cwd);
 165         SMB_ASSERT(cwd_ret == 0);
 166
 167         if (ret == -1) {
 168                 tevent_req_error(req, error);
 169                 return tevent_req_post(req, ev);
 170         }
 171
 172         state->xattr_size = xattr_tdb_getattr(db,
 173                                               state,
 174                                               &id,
 175                                               xattr_name,
 176                                               &xattr_blob);
 177         if (state->xattr_size == -1) {
 178                 tevent_req_error(req, errno);
 179                 return tevent_req_post(req, ev);
 180         }
 181
 182         if (alloc_hint == 0) {
 183                 /*
 184                  * The caller only wants to know the size.
 185                  */
 186                 tevent_req_done(req);
 187                 return tevent_req_post(req, ev);
 188         }
 189
 190         if (state->xattr_size == 0) {
 191                 /*
 192                  * There's no data.
 193                  */
 194                 tevent_req_done(req);
 195                 return tevent_req_post(req, ev);
 196         }
 197
 198         if (xattr_blob.length > alloc_hint) {
 199                 /*
 200                  * The data doesn't fit.
 201                  */
 202                 state->xattr_size = -1;
 203                 tevent_req_error(req, ERANGE);
 204                 return tevent_req_post(req, ev);
 205         }
 206
 207         /*
 208          * take the whole blob.
 209          */
 210         state->xattr_value = xattr_blob.data;
 211
 212         tevent_req_done(req);
 213         return tevent_req_post(req, ev);
 214 }
 215
 216 static ssize_t xattr_tdb_getxattrat_recv(struct tevent_req *req,
 217                                          struct vfs_aio_state *aio_state,
 218                                          TALLOC_CTX *mem_ctx,
 219                                          uint8_t **xattr_value)
 220 {
 221         struct xattr_tdb_getxattrat_state *state = tevent_req_data(
 222                 req, struct xattr_tdb_getxattrat_state);
 223         ssize_t xattr_size;
 224
 225         if (tevent_req_is_unix_error(req, &aio_state->error)) {
 226                 tevent_req_received(req);
 227                 return -1;
 228         }
 229
 230         *aio_state = state->vfs_aio_state;
 231         xattr_size = state->xattr_size;
 232         if (xattr_value != NULL) {
 233                 *xattr_value = talloc_move(mem_ctx, &state->xattr_value);
 234         }
 235
 236         tevent_req_received(req);
 237         return xattr_size;
 238 }
 239
 240 static ssize_t xattr_tdb_fgetxattr(struct vfs_handle_struct *handle,
 241                                    struct files_struct *fsp,
 242                                    const char *name, void *value, size_t size)
 243 {
 244         SMB_STRUCT_STAT sbuf;
 245         struct file_id id;
 246         struct db_context *db;
 247         ssize_t xattr_size;
 248         DATA_BLOB blob;
 249         TALLOC_CTX *frame = talloc_stackframe();
 250
 251         SMB_VFS_HANDLE_GET_DATA(handle, db, struct db_context,
 252                                 if (!xattr_tdb_init(-1, frame, &db))
 253                                 {
 254                                         TALLOC_FREE(frame); return -1;
 255                                 });
 256
 257         if (SMB_VFS_NEXT_FSTAT(handle, fsp, &sbuf) == -1) {
 258                 TALLOC_FREE(frame);
 259                 return -1;
 260         }
 261
 262         id = SMB_VFS_NEXT_FILE_ID_CREATE(handle, &sbuf);
 263
 264         xattr_size = xattr_tdb_getattr(db, frame, &id, name, &blob);
 265         if (xattr_size < 0) {
 266                 errno = ENOATTR;
 267                 TALLOC_FREE(frame);
 268                 return -1;
 269         }
 270
 271         if (size == 0) {
 272                 TALLOC_FREE(frame);
 273                 return xattr_size;
 274         }
 275
 276         if (blob.length > size) {
 277                 TALLOC_FREE(frame);
 278                 errno = ERANGE;
 279                 return -1;
 280         }
 281         memcpy(value, blob.data, xattr_size);
 282         TALLOC_FREE(frame);
 283         return xattr_size;
 284 }
 285
 286 static int xattr_tdb_setxattr(struct vfs_handle_struct *handle,
 287                                 const struct smb_filename *smb_fname,
 288                                 const char *name,
 289                                 const void *value,
 290                                 size_t size,
 291                                 int flags)
 292 {
 293         struct file_id id;
 294         struct db_context *db;
 295         int ret;
 296         TALLOC_CTX *frame = talloc_stackframe();
 297
 298         SMB_VFS_HANDLE_GET_DATA(handle, db, struct db_context,
 299                                 if (!xattr_tdb_init(-1, frame, &db))
 300                                 {
 301                                         TALLOC_FREE(frame); return -1;
 302                                 });
 303
 304         ret = xattr_tdb_get_file_id(handle, smb_fname->base_name, &id);
 305         if (ret == -1) {
 306                 TALLOC_FREE(frame);
 307                 return -1;
 308         }
 309
 310         ret = xattr_tdb_setattr(db, &id, name, value, size, flags);
 311         TALLOC_FREE(frame);
 312         return ret;
 313 }
 314
 315 static int xattr_tdb_fsetxattr(struct vfs_handle_struct *handle,
 316                                struct files_struct *fsp,
 317                                const char *name, const void *value,
 318                                size_t size, int flags)
 319 {
 320         SMB_STRUCT_STAT sbuf;
 321         struct file_id id;
 322         struct db_context *db;
 323         int ret;
 324         TALLOC_CTX *frame = talloc_stackframe();
 325
 326         SMB_VFS_HANDLE_GET_DATA(handle, db, struct db_context,
 327                                 if (!xattr_tdb_init(-1, frame, &db))
 328                                 {
 329                                         TALLOC_FREE(frame); return -1;
 330                                 });
 331
 332         if (SMB_VFS_NEXT_FSTAT(handle, fsp, &sbuf) == -1) {
 333                 TALLOC_FREE(frame);
 334                 return -1;
 335         }
 336
 337         id = SMB_VFS_NEXT_FILE_ID_CREATE(handle, &sbuf);
 338
 339         ret = xattr_tdb_setattr(db, &id, name, value, size, flags);
 340         TALLOC_FREE(frame);
 341         return ret;
 342
 343 }
 344
 345 static ssize_t xattr_tdb_listxattr(struct vfs_handle_struct *handle,
 346                                 const struct smb_filename *smb_fname,
 347                                 char *list,
 348                                 size_t size)
 349 {
 350         struct file_id id;
 351         struct db_context *db;
 352         int ret;
 353         TALLOC_CTX *frame = talloc_stackframe();
 354
 355         SMB_VFS_HANDLE_GET_DATA(handle, db, struct db_context,
 356                                 if (!xattr_tdb_init(-1, frame, &db))
 357                                 {
 358                                         TALLOC_FREE(frame); return -1;
 359                                 });
 360
 361         ret = xattr_tdb_get_file_id(handle, smb_fname->base_name, &id);
 362         if (ret == -1) {
 363                 TALLOC_FREE(frame);
 364                 return -1;
 365         }
 366
 367         ret = xattr_tdb_listattr(db, &id, list, size);
 368         TALLOC_FREE(frame);
 369         return ret;
 370
 371 }
 372
 373 static ssize_t xattr_tdb_flistxattr(struct vfs_handle_struct *handle,
 374                                     struct files_struct *fsp, char *list,
 375                                     size_t size)
 376 {
 377         SMB_STRUCT_STAT sbuf;
 378         struct file_id id;
 379         struct db_context *db;
 380         int ret;
 381         TALLOC_CTX *frame = talloc_stackframe();
 382
 383         SMB_VFS_HANDLE_GET_DATA(handle, db, struct db_context,
 384                                 if (!xattr_tdb_init(-1, frame, &db))
 385                                 {
 386                                         TALLOC_FREE(frame); return -1;
 387                                 });
 388
 389         if (SMB_VFS_NEXT_FSTAT(handle, fsp, &sbuf) == -1) {
 390                 TALLOC_FREE(frame);
 391                 return -1;
 392         }
 393
 394         id = SMB_VFS_NEXT_FILE_ID_CREATE(handle, &sbuf);
 395
 396         ret = xattr_tdb_listattr(db, &id, list, size);
 397         TALLOC_FREE(frame);
 398         return ret;
 399 }
 400
 401 static int xattr_tdb_removexattr(struct vfs_handle_struct *handle,
 402                                 const struct smb_filename *smb_fname,
 403                                 const char *name)
 404 {
 405         struct file_id id;
 406         struct db_context *db;
 407         int ret;
 408         TALLOC_CTX *frame = talloc_stackframe();
 409
 410         SMB_VFS_HANDLE_GET_DATA(handle, db, struct db_context,
 411                                 if (!xattr_tdb_init(-1, frame, &db))
 412                                 {
 413                                         TALLOC_FREE(frame); return -1;
 414                                 });
 415
 416         ret = xattr_tdb_get_file_id(handle, smb_fname->base_name, &id);
 417         if (ret == -1) {
 418                 TALLOC_FREE(frame);
 419                 return ret;
 420         }
 421
 422
 423         ret = xattr_tdb_removeattr(db, &id, name);
 424         TALLOC_FREE(frame);
 425         return ret;
 426 }
 427
 428 static int xattr_tdb_fremovexattr(struct vfs_handle_struct *handle,
 429                                   struct files_struct *fsp, const char *name)
 430 {
 431         SMB_STRUCT_STAT sbuf;
 432         struct file_id id;
 433         struct db_context *db;
 434         int ret;
 435         TALLOC_CTX *frame = talloc_stackframe();
 436
 437         SMB_VFS_HANDLE_GET_DATA(handle, db, struct db_context,
 438                                 if (!xattr_tdb_init(-1, frame, &db))
 439                                 {
 440                                         TALLOC_FREE(frame); return -1;
 441                                 });
 442
 443         if (SMB_VFS_NEXT_FSTAT(handle, fsp, &sbuf) == -1) {
 444                 TALLOC_FREE(frame);
 445                 return -1;
 446         }
 447
 448         id = SMB_VFS_NEXT_FILE_ID_CREATE(handle, &sbuf);
 449
 450         ret = xattr_tdb_removeattr(db, &id, name);
 451         TALLOC_FREE(frame);
 452         return ret;
 453 }
 454
 455 /*
 456  * Open the tdb file upon VFS_CONNECT
 457  */
 458
 459 static bool xattr_tdb_init(int snum, TALLOC_CTX *mem_ctx, struct db_context **p_db)
 460 {
 461         struct db_context *db;
 462         const char *dbname;
 463         char *def_dbname;
 464
 465         def_dbname = state_path(talloc_tos(), "xattr.tdb");
 466         if (def_dbname == NULL) {
 467                 errno = ENOSYS;
 468                 return false;
 469         }
 470
 471         dbname = lp_parm_const_string(snum, "xattr_tdb", "file", def_dbname);
 472
 473         /* now we know dbname is not NULL */
 474
 475         become_root();
 476         db = db_open(NULL, dbname, 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0600,
 477                      DBWRAP_LOCK_ORDER_2, DBWRAP_FLAG_NONE);
 478         unbecome_root();
 479
 480         if (db == NULL) {
 481 #if defined(ENOTSUP)
 482                 errno = ENOTSUP;
 483 #else
 484                 errno = ENOSYS;
 485 #endif
 486                 TALLOC_FREE(def_dbname);
 487                 return false;
 488         }
 489
 490         *p_db = db;
 491         TALLOC_FREE(def_dbname);
 492         return true;
 493 }
 494
 495 static int xattr_tdb_openat(struct vfs_handle_struct *handle,
 496                             const struct files_struct *dirfsp,
 497                             const struct smb_filename *smb_fname,
 498                             struct files_struct *fsp,
 499                             int flags,
 500                             mode_t mode)
 501 {
 502         struct db_context *db = NULL;
 503         TALLOC_CTX *frame = NULL;
 504         SMB_STRUCT_STAT sbuf;
 505         int ret;
 506
 507         fsp->fh->fd = SMB_VFS_NEXT_OPENAT(handle,
 508                                           dirfsp,
 509                                           smb_fname,
 510                                           fsp,
 511                                           flags,
 512                                           mode);
 513
 514         if (fsp->fh->fd < 0) {
 515                 return fsp->fh->fd;
 516         }
 517
 518         if ((flags & (O_CREAT|O_EXCL)) != (O_CREAT|O_EXCL)) {
 519                 return fsp->fh->fd;
 520         }
 521
 522         /*
 523          * We know we used O_CREAT|O_EXCL and it worked.
 524          * We must have created the file.
 525          */
 526
 527         ret = SMB_VFS_FSTAT(fsp, &sbuf);
 528         if (ret == -1) {
 529                 /* Can't happen... */
 530                 DBG_WARNING("SMB_VFS_FSTAT failed on file %s (%s)\n",
 531                             smb_fname_str_dbg(smb_fname),
 532                             strerror(errno));
 533                 return -1;
 534         }
 535
 536         fsp->file_id = SMB_VFS_FILE_ID_CREATE(fsp->conn, &sbuf);
 537
 538         frame = talloc_stackframe();
 539
 540         SMB_VFS_HANDLE_GET_DATA(handle, db, struct db_context,
 541                                 if (!xattr_tdb_init(-1, frame, &db))
 542                                 {
 543                                         TALLOC_FREE(frame); return -1;
 544                                 });
 545
 546         xattr_tdb_remove_all_attrs(db, &fsp->file_id);
 547
 548         TALLOC_FREE(frame);
 549         return fsp->fh->fd;
 550 }
 551
 552 static int xattr_tdb_mkdirat(vfs_handle_struct *handle,
 553                 struct files_struct *dirfsp,
 554                 const struct smb_filename *smb_fname,
 555                 mode_t mode)
 556 {
 557         struct db_context *db = NULL;
 558         TALLOC_CTX *frame = NULL;
 559         struct file_id fileid;
 560         int ret;
 561         struct smb_filename *smb_fname_tmp = NULL;
 562
 563         ret = SMB_VFS_NEXT_MKDIRAT(handle,
 564                                 dirfsp,
 565                                 smb_fname,
 566                                 mode);
 567         if (ret < 0) {
 568                 return ret;
 569         }
 570
 571         frame = talloc_stackframe();
 572         smb_fname_tmp = cp_smb_filename(frame, smb_fname);
 573         if (smb_fname_tmp == NULL) {
 574                 TALLOC_FREE(frame);
 575                 errno = ENOMEM;
 576                 return -1;
 577         }
 578
 579         /* Always use LSTAT here - we just creaded the directory. */
 580         ret = SMB_VFS_LSTAT(handle->conn, smb_fname_tmp);
 581         if (ret == -1) {
 582                 /* Rename race. Let upper level take care of it. */
 583                 TALLOC_FREE(frame);
 584                 return -1;
 585         }
 586         if (!S_ISDIR(smb_fname_tmp->st.st_ex_mode)) {
 587                 /* Rename race. Let upper level take care of it. */
 588                 TALLOC_FREE(frame);
 589                 return -1;
 590         }
 591
 592         fileid = SMB_VFS_FILE_ID_CREATE(handle->conn, &smb_fname_tmp->st);
 593
 594         SMB_VFS_HANDLE_GET_DATA(handle, db, struct db_context,
 595                                 if (!xattr_tdb_init(-1, frame, &db))
 596                                 {
 597                                         TALLOC_FREE(frame); return -1;
 598                                 });
 599
 600         xattr_tdb_remove_all_attrs(db, &fileid);
 601         TALLOC_FREE(frame);
 602         return 0;
 603 }
 604
 605 /*
 606  * On unlink we need to delete the tdb record
 607  */
 608 static int xattr_tdb_unlinkat(vfs_handle_struct *handle,
 609                         struct files_struct *dirfsp,
 610                         const struct smb_filename *smb_fname,
 611                         int flags)
 612 {
 613         struct smb_filename *smb_fname_tmp = NULL;
 614         struct file_id id;
 615         struct db_context *db;
 616         int ret = -1;
 617         bool remove_record = false;
 618         TALLOC_CTX *frame = talloc_stackframe();
 619
 620         SMB_VFS_HANDLE_GET_DATA(handle, db, struct db_context,
 621                                 if (!xattr_tdb_init(-1, frame, &db))
 622                                 {
 623                                         TALLOC_FREE(frame); return -1;
 624                                 });
 625
 626         smb_fname_tmp = cp_smb_filename(frame, smb_fname);
 627         if (smb_fname_tmp == NULL) {
 628                 TALLOC_FREE(frame);
 629                 errno = ENOMEM;
 630                 return -1;
 631         }
 632
 633         if (smb_fname_tmp->flags & SMB_FILENAME_POSIX_PATH) {
 634                 ret = SMB_VFS_NEXT_LSTAT(handle, smb_fname_tmp);
 635         } else {
 636                 ret = SMB_VFS_NEXT_STAT(handle, smb_fname_tmp);
 637         }
 638         if (ret == -1) {
 639                 goto out;
 640         }
 641
 642         if (flags & AT_REMOVEDIR) {
 643                 /* Always remove record when removing a directory succeeds. */
 644                 remove_record = true;
 645         } else {
 646                 if (smb_fname_tmp->st.st_ex_nlink == 1) {
 647                         /* Only remove record on last link to file. */
 648                         remove_record = true;
 649                 }
 650         }
 651
 652         ret = SMB_VFS_NEXT_UNLINKAT(handle,
 653                                 dirfsp,
 654                                 smb_fname_tmp,
 655                                 flags);
 656
 657         if (ret == -1) {
 658                 goto out;
 659         }
 660
 661         if (!remove_record) {
 662                 goto out;
 663         }
 664
 665         id = SMB_VFS_NEXT_FILE_ID_CREATE(handle, &smb_fname_tmp->st);
 666
 667         xattr_tdb_remove_all_attrs(db, &id);
 668
 669  out:
 670         TALLOC_FREE(frame);
 671         return ret;
 672 }
 673
 674 /*
 675  * Destructor for the VFS private data
 676  */
 677
 678 static void close_xattr_db(void **data)
 679 {
 680         struct db_context **p_db = (struct db_context **)data;
 681         TALLOC_FREE(*p_db);
 682 }
 683
 684 static int xattr_tdb_connect(vfs_handle_struct *handle, const char *service,
 685                           const char *user)
 686 {
 687         char *sname = NULL;
 688         int res, snum;
 689         struct db_context *db;
 690
 691         res = SMB_VFS_NEXT_CONNECT(handle, service, user);
 692         if (res < 0) {
 693                 return res;
 694         }
 695
 696         snum = find_service(talloc_tos(), service, &sname);
 697         if (snum == -1 || sname == NULL) {
 698                 /*
 699                  * Should not happen, but we should not fail just *here*.
 700                  */
 701                 return 0;
 702         }
 703
 704         if (!xattr_tdb_init(snum, NULL, &db)) {
 705                 DEBUG(5, ("Could not init xattr tdb\n"));
 706                 lp_do_parameter(snum, "ea support", "False");
 707                 return 0;
 708         }
 709
 710         lp_do_parameter(snum, "ea support", "True");
 711
 712         SMB_VFS_HANDLE_SET_DATA(handle, db, close_xattr_db,
 713                                 struct db_context, return -1);
 714
 715         return 0;
 716 }
 717
 718 static struct vfs_fn_pointers vfs_xattr_tdb_fns = {
 719         .getxattr_fn = xattr_tdb_getxattr,
 720         .getxattrat_send_fn = xattr_tdb_getxattrat_send,
 721         .getxattrat_recv_fn = xattr_tdb_getxattrat_recv,
 722         .fgetxattr_fn = xattr_tdb_fgetxattr,
 723         .setxattr_fn = xattr_tdb_setxattr,
 724         .fsetxattr_fn = xattr_tdb_fsetxattr,
 725         .listxattr_fn = xattr_tdb_listxattr,
 726         .flistxattr_fn = xattr_tdb_flistxattr,
 727         .removexattr_fn = xattr_tdb_removexattr,
 728         .fremovexattr_fn = xattr_tdb_fremovexattr,
 729         .openat_fn = xattr_tdb_openat,
 730         .mkdirat_fn = xattr_tdb_mkdirat,
 731         .unlinkat_fn = xattr_tdb_unlinkat,
 732         .connect_fn = xattr_tdb_connect,
 733 };
 734
 735 static_decl_vfs;
 736 NTSTATUS vfs_xattr_tdb_init(TALLOC_CTX *ctx)
 737 {
 738         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "xattr_tdb",
 739                                 &vfs_xattr_tdb_fns);
 740 }