source3/modules/vfs_onefs_shadow_copy.c

   1 /*
   2  * OneFS shadow copy implementation that utilizes the file system's native
   3  * snapshot support. This is based on the original shadow copy module from
   4  * 2004.
   5  *
   6  * Copyright (C) Stefan Metzmacher      2003-2004
   7  * Copyright (C) Tim Prouty             2009
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22  */
  23
  24 #include "includes.h"
  25 #include "smbd/smbd.h"
  26 #include "onefs_shadow_copy.h"
  27
  28 static int vfs_onefs_shadow_copy_debug_level = DBGC_VFS;
  29
  30 #undef DBGC_CLASS
  31 #define DBGC_CLASS vfs_onefs_shadow_copy_debug_level
  32
  33 #define SHADOW_COPY_PREFIX "@GMT-"
  34 #define SHADOW_COPY_SAMPLE "@GMT-2004.02.18-15.44.00"
  35
  36 bool
  37 shadow_copy_match_name(const char *name, char **snap_component)
  38 {
  39         uint32  i = 0;
  40         char delim[] = SHADOW_COPY_PREFIX;
  41         char* start;
  42
  43         start = strstr( name, delim );
  44
  45         /*
  46          * The name could have SHADOW_COPY_PREFIX in it so we need to keep
  47          * trying until we get something that is the full length of the
  48          * SHADOW_COPY_SAMPLE.
  49          */
  50         while (start != NULL) {
  51
  52                 DEBUG(10,("Processing %s\n", name));
  53
  54                 /* size / correctness check */
  55                 *snap_component = start;
  56                 for ( i = sizeof(SHADOW_COPY_PREFIX);
  57                       i < sizeof(SHADOW_COPY_SAMPLE); i++) {
  58                         if (start[i] == '/') {
  59                                 if (i == sizeof(SHADOW_COPY_SAMPLE) - 1)
  60                                         return true;
  61                                 else
  62                                         break;
  63                         } else if (start[i] == '\0')
  64                                 return (i == sizeof(SHADOW_COPY_SAMPLE) - 1);
  65                 }
  66
  67                 start = strstr( start, delim );
  68         }
  69
  70         return false;
  71 }
  72
  73 static int
  74 onefs_shadow_copy_get_shadow_copy_data(vfs_handle_struct *handle,
  75                                        files_struct *fsp,
  76                                        SHADOW_COPY_DATA *shadow_copy_data,
  77                                        bool labels)
  78 {
  79         void *p = osc_version_opendir();
  80         char *snap_component = NULL;
  81         shadow_copy_data->num_volumes = 0;
  82         shadow_copy_data->labels = NULL;
  83
  84         if (!p) {
  85                 DEBUG(0, ("shadow_copy_get_shadow_copy_data: osc_opendir() "
  86                           "failed for [%s]\n",fsp->conn->connectpath));
  87                 return -1;
  88         }
  89
  90         while (true) {
  91                 SHADOW_COPY_LABEL *tlabels;
  92                 char *d;
  93
  94                 d = osc_version_readdir(p);
  95                 if (d == NULL)
  96                         break;
  97
  98                 if (!shadow_copy_match_name(d, &snap_component)) {
  99                         DEBUG(10,("shadow_copy_get_shadow_copy_data: ignore "
 100                                   "[%s]\n",d));
 101                         continue;
 102                 }
 103
 104                 DEBUG(7,("shadow_copy_get_shadow_copy_data: not ignore "
 105                          "[%s]\n",d));
 106
 107                 if (!labels) {
 108                         shadow_copy_data->num_volumes++;
 109                         continue;
 110                 }
 111
 112                 tlabels = (SHADOW_COPY_LABEL *)TALLOC_REALLOC(
 113                         shadow_copy_data->mem_ctx,
 114                         shadow_copy_data->labels,
 115                         (shadow_copy_data->num_volumes+1) *
 116                         sizeof(SHADOW_COPY_LABEL));
 117
 118                 if (tlabels == NULL) {
 119                         DEBUG(0,("shadow_copy_get_shadow_copy_data: Out of "
 120                                  "memory\n"));
 121                         osc_version_closedir(p);
 122                         return -1;
 123                 }
 124
 125                 snprintf(tlabels[shadow_copy_data->num_volumes++],
 126                          sizeof(*tlabels), "%s",d);
 127
 128                 shadow_copy_data->labels = tlabels;
 129         }
 130
 131         osc_version_closedir(p);
 132
 133         return 0;
 134 }
 135
 136 #define SHADOW_NEXT(op, args, rtype) do {                             \
 137         char *cpath = NULL;                                           \
 138         char *snap_component = NULL;                                  \
 139         rtype ret;                                                    \
 140         if (shadow_copy_match_name(path, &snap_component))            \
 141                 cpath = osc_canonicalize_path(path, snap_component); \
 142         ret = SMB_VFS_NEXT_ ## op args;                               \
 143         SAFE_FREE(cpath);                                             \
 144         return ret;                                                   \
 145         } while (0)                                                   \
 146
 147 /*
 148  * XXX: Convert osc_canonicalize_path to use talloc instead of malloc.
 149  */
 150 #define SHADOW_NEXT_SMB_FNAME(op, args, rtype) do {                   \
 151                 char *smb_base_name_tmp = NULL;                       \
 152                 char *cpath = NULL;                                   \
 153                 char *snap_component = NULL;                          \
 154                 rtype ret;                                            \
 155                 smb_base_name_tmp = smb_fname->base_name;             \
 156                 if (shadow_copy_match_name(smb_fname->base_name,      \
 157                         &snap_component)) {                             \
 158                         cpath = osc_canonicalize_path(smb_fname->base_name, \
 159                             snap_component);                            \
 160                         smb_fname->base_name = cpath;                   \
 161                 }                                                       \
 162                 ret = SMB_VFS_NEXT_ ## op args;                         \
 163                 smb_fname->base_name = smb_base_name_tmp;               \
 164                 SAFE_FREE(cpath);                                       \
 165                 return ret;                                             \
 166         } while (0)                                                     \
 167
 168 static uint64_t
 169 onefs_shadow_copy_disk_free(vfs_handle_struct *handle, const char *path,
 170                             bool small_query, uint64_t *bsize, uint64_t *dfree,
 171                             uint64_t *dsize)
 172 {
 173
 174         SHADOW_NEXT(DISK_FREE,
 175                     (handle, cpath ?: path, small_query, bsize, dfree, dsize),
 176                     uint64_t);
 177
 178 }
 179
 180 static int
 181 onefs_shadow_copy_statvfs(struct vfs_handle_struct *handle, const char *path,
 182                           struct vfs_statvfs_struct *statbuf)
 183 {
 184         SHADOW_NEXT(STATVFS,
 185                     (handle, cpath ?: path, statbuf),
 186                     int);
 187 }
 188
 189 static DIR *
 190 onefs_shadow_copy_opendir(vfs_handle_struct *handle, const char *path,
 191                           const char *mask, uint32_t attr)
 192 {
 193         SHADOW_NEXT(OPENDIR,
 194                     (handle, cpath ?: path, mask, attr),
 195                     DIR *);
 196 }
 197
 198 static int
 199 onefs_shadow_copy_mkdir(vfs_handle_struct *handle, const char *path,
 200                         mode_t mode)
 201 {
 202         SHADOW_NEXT(MKDIR,
 203                     (handle, cpath ?: path, mode),
 204                     int);
 205 }
 206
 207 static int
 208 onefs_shadow_copy_rmdir(vfs_handle_struct *handle, const char *path)
 209 {
 210         SHADOW_NEXT(RMDIR,
 211                     (handle, cpath ?: path),
 212                     int);
 213 }
 214
 215 static int
 216 onefs_shadow_copy_open(vfs_handle_struct *handle,
 217                        struct smb_filename *smb_fname, files_struct *fsp,
 218                        int flags, mode_t mode)
 219 {
 220         SHADOW_NEXT_SMB_FNAME(OPEN,
 221                               (handle, smb_fname, fsp, flags, mode),
 222                               int);
 223 }
 224
 225 static NTSTATUS
 226 onefs_shadow_copy_create_file(vfs_handle_struct *handle,
 227                               struct smb_request *req,
 228                               uint16_t root_dir_fid,
 229                               struct smb_filename *smb_fname,
 230                               uint32_t access_mask,
 231                               uint32_t share_access,
 232                               uint32_t create_disposition,
 233                               uint32_t create_options,
 234                               uint32_t file_attributes,
 235                               uint32_t oplock_request,
 236                               uint64_t allocation_size,
 237                               uint32_t private_flags,
 238                               struct security_descriptor *sd,
 239                               struct ea_list *ea_list,
 240                               files_struct **result,
 241                               int *pinfo)
 242 {
 243         SHADOW_NEXT_SMB_FNAME(CREATE_FILE,
 244                               (handle, req, root_dir_fid, smb_fname,
 245                                   access_mask, share_access,
 246                                   create_disposition, create_options,
 247                                   file_attributes, oplock_request,
 248                                   allocation_size, private_flags,
 249                                   sd, ea_list, result, pinfo),
 250                               NTSTATUS);
 251 }
 252
 253 /**
 254  * XXX: macro-ize
 255  */
 256 static int
 257 onefs_shadow_copy_rename(vfs_handle_struct *handle,
 258                          const struct smb_filename *smb_fname_src,
 259                          const struct smb_filename *smb_fname_dst)
 260 {
 261         char *old_cpath = NULL;
 262         char *old_snap_component = NULL;
 263         char *new_cpath = NULL;
 264         char *new_snap_component = NULL;
 265         struct smb_filename *smb_fname_src_tmp = NULL;
 266         struct smb_filename *smb_fname_dst_tmp = NULL;
 267         NTSTATUS status;
 268         int ret = -1;
 269
 270         status = copy_smb_filename(talloc_tos(), smb_fname_src,
 271                                    &smb_fname_src_tmp);
 272         if (!NT_STATUS_IS_OK(status)) {
 273                 errno = map_errno_from_nt_status(status);
 274                 goto out;
 275         }
 276         status = copy_smb_filename(talloc_tos(), smb_fname_dst,
 277                                    &smb_fname_dst_tmp);
 278         if (!NT_STATUS_IS_OK(status)) {
 279                 errno = map_errno_from_nt_status(status);
 280                 goto out;
 281         }
 282
 283         if (shadow_copy_match_name(smb_fname_src_tmp->base_name,
 284                                    &old_snap_component)) {
 285                 old_cpath = osc_canonicalize_path(smb_fname_src_tmp->base_name,
 286                                           old_snap_component);
 287                 smb_fname_src_tmp->base_name = old_cpath;
 288         }
 289
 290         if (shadow_copy_match_name(smb_fname_dst_tmp->base_name,
 291                                    &new_snap_component)) {
 292                 new_cpath = osc_canonicalize_path(smb_fname_dst_tmp->base_name,
 293                                           new_snap_component);
 294                 smb_fname_dst_tmp->base_name = new_cpath;
 295         }
 296
 297         ret = SMB_VFS_NEXT_RENAME(handle, smb_fname_src_tmp,
 298                                   smb_fname_dst_tmp);
 299
 300  out:
 301         SAFE_FREE(old_cpath);
 302         SAFE_FREE(new_cpath);
 303         TALLOC_FREE(smb_fname_src_tmp);
 304         TALLOC_FREE(smb_fname_dst_tmp);
 305
 306         return ret;
 307 }
 308
 309 static int
 310 onefs_shadow_copy_stat(vfs_handle_struct *handle,
 311                        struct smb_filename *smb_fname)
 312 {
 313         SHADOW_NEXT_SMB_FNAME(STAT,
 314                               (handle, smb_fname),
 315                               int);
 316 }
 317
 318 static int
 319 onefs_shadow_copy_lstat(vfs_handle_struct *handle,
 320                         struct smb_filename *smb_fname)
 321 {
 322         SHADOW_NEXT_SMB_FNAME(LSTAT,
 323                               (handle, smb_fname),
 324                               int);
 325 }
 326
 327 static int
 328 onefs_shadow_copy_unlink(vfs_handle_struct *handle,
 329                          const struct smb_filename *smb_fname_in)
 330 {
 331         struct smb_filename *smb_fname = NULL;
 332         NTSTATUS status;
 333
 334         status = copy_smb_filename(talloc_tos(), smb_fname_in, &smb_fname);
 335         if (!NT_STATUS_IS_OK(status)) {
 336                 errno = map_errno_from_nt_status(status);
 337                 return -1;
 338         }
 339
 340         SHADOW_NEXT_SMB_FNAME(UNLINK,
 341                               (handle, smb_fname),
 342                               int);
 343 }
 344
 345 static int
 346 onefs_shadow_copy_chmod(vfs_handle_struct *handle, const char *path,
 347                         mode_t mode)
 348 {
 349         SHADOW_NEXT(CHMOD,
 350                     (handle, cpath ?: path, mode),
 351                     int);
 352 }
 353
 354 static int
 355 onefs_shadow_copy_chown(vfs_handle_struct *handle, const char *path,
 356                         uid_t uid, gid_t gid)
 357 {
 358         SHADOW_NEXT(CHOWN,
 359                     (handle, cpath ?: path, uid, gid),
 360                     int);
 361 }
 362
 363 static int
 364 onefs_shadow_copy_lchown(vfs_handle_struct *handle, const char *path,
 365                          uid_t uid, gid_t gid)
 366 {
 367         SHADOW_NEXT(LCHOWN,
 368                     (handle, cpath ?: path, uid, gid),
 369                     int);
 370 }
 371
 372 static int
 373 onefs_shadow_copy_chdir(vfs_handle_struct *handle, const char *path)
 374 {
 375         SHADOW_NEXT(CHDIR,
 376                     (handle, cpath ?: path),
 377                     int);
 378 }
 379
 380 static int
 381 onefs_shadow_copy_ntimes(vfs_handle_struct *handle,
 382                         const struct smb_filename *smb_fname_in,
 383                         struct smb_file_time *ft)
 384 {
 385         struct smb_filename *smb_fname = NULL;
 386         NTSTATUS status;
 387
 388         status = copy_smb_filename(talloc_tos(), smb_fname_in, &smb_fname);
 389         if (!NT_STATUS_IS_OK(status)) {
 390                 errno = map_errno_from_nt_status(status);
 391                 return -1;
 392         }
 393
 394         SHADOW_NEXT_SMB_FNAME(NTIMES,
 395                               (handle, smb_fname, ft),
 396                               int);
 397
 398 }
 399
 400 /**
 401  * XXX: macro-ize
 402  */
 403 static int
 404 onefs_shadow_copy_symlink(vfs_handle_struct *handle,
 405     const char *oldpath, const char *newpath)
 406 {
 407         char *old_cpath = NULL;
 408         char *old_snap_component = NULL;
 409         char *new_cpath = NULL;
 410         char *new_snap_component = NULL;
 411         bool ret;
 412
 413         if (shadow_copy_match_name(oldpath, &old_snap_component))
 414                 old_cpath = osc_canonicalize_path(oldpath, old_snap_component);
 415
 416         if (shadow_copy_match_name(newpath, &new_snap_component))
 417                 new_cpath = osc_canonicalize_path(newpath, new_snap_component);
 418
 419         ret = SMB_VFS_NEXT_SYMLINK(handle, old_cpath ?: oldpath,
 420             new_cpath ?: newpath);
 421
 422         SAFE_FREE(old_cpath);
 423         SAFE_FREE(new_cpath);
 424
 425         return ret;
 426 }
 427
 428 static int
 429 onefs_shadow_copy_readlink(vfs_handle_struct *handle, const char *path,
 430                            char *buf, size_t bufsiz)
 431 {
 432         SHADOW_NEXT(READLINK,
 433                     (handle, cpath ?: path, buf, bufsiz),
 434                     int);
 435 }
 436
 437 /**
 438  * XXX: macro-ize
 439  */
 440 static int
 441 onefs_shadow_copy_link(vfs_handle_struct *handle, const char *oldpath,
 442                        const char *newpath)
 443 {
 444         char *old_cpath = NULL;
 445         char *old_snap_component = NULL;
 446         char *new_cpath = NULL;
 447         char *new_snap_component = NULL;
 448         int ret;
 449
 450         if (shadow_copy_match_name(oldpath, &old_snap_component))
 451                 old_cpath = osc_canonicalize_path(oldpath, old_snap_component);
 452
 453         if (shadow_copy_match_name(newpath, &new_snap_component))
 454                 new_cpath = osc_canonicalize_path(newpath, new_snap_component);
 455
 456         ret = SMB_VFS_NEXT_LINK(handle, old_cpath ?: oldpath,
 457             new_cpath ?: newpath);
 458
 459         SAFE_FREE(old_cpath);
 460         SAFE_FREE(new_cpath);
 461
 462         return ret;
 463 }
 464
 465 static int
 466 onefs_shadow_copy_mknod(vfs_handle_struct *handle, const char *path,
 467                         mode_t mode, SMB_DEV_T dev)
 468 {
 469         SHADOW_NEXT(MKNOD,
 470                     (handle, cpath ?: path, mode, dev),
 471                     int);
 472 }
 473
 474 static char *
 475 onefs_shadow_copy_realpath(vfs_handle_struct *handle, const char *path)
 476 {
 477         SHADOW_NEXT(REALPATH,
 478                     (handle, cpath ?: path),
 479                     char *);
 480 }
 481
 482 static int onefs_shadow_copy_chflags(struct vfs_handle_struct *handle,
 483                                      const char *path, unsigned int flags)
 484 {
 485         SHADOW_NEXT(CHFLAGS,
 486                     (handle, cpath ?: path, flags),
 487                     int);
 488 }
 489
 490 static NTSTATUS
 491 onefs_shadow_copy_streaminfo(struct vfs_handle_struct *handle,
 492                              struct files_struct *fsp,
 493                              const char *path,
 494                              TALLOC_CTX *mem_ctx,
 495                              unsigned int *num_streams,
 496                              struct stream_struct **streams)
 497 {
 498         SHADOW_NEXT(STREAMINFO,
 499                     (handle, fsp, cpath ?: path, mem_ctx, num_streams,
 500                         streams),
 501                     NTSTATUS);
 502 }
 503
 504 static int
 505 onefs_shadow_copy_get_real_filename(struct vfs_handle_struct *handle,
 506                                     const char *full_path,
 507                                     const char *path,
 508                                     TALLOC_CTX *mem_ctx,
 509                                     char **found_name)
 510 {
 511         SHADOW_NEXT(GET_REAL_FILENAME,
 512                     (handle, full_path, cpath ?: path, mem_ctx, found_name),
 513                     int);
 514 }
 515
 516 static NTSTATUS
 517 onefs_shadow_copy_get_nt_acl(struct vfs_handle_struct *handle,
 518                             const char *path, uint32 security_info,
 519                             struct security_descriptor **ppdesc)
 520 {
 521         SHADOW_NEXT(GET_NT_ACL,
 522                     (handle, cpath ?: path, security_info, ppdesc),
 523                     NTSTATUS);
 524 }
 525
 526 static int
 527 onefs_shadow_copy_chmod_acl(vfs_handle_struct *handle, const char *path,
 528                             mode_t mode)
 529 {
 530         SHADOW_NEXT(CHMOD_ACL,
 531                     (handle, cpath ?: path, mode),
 532                     int);
 533 }
 534
 535 static SMB_ACL_T
 536 onefs_shadow_copy_sys_acl_get_file(vfs_handle_struct *handle,
 537                                    const char *path, SMB_ACL_TYPE_T type)
 538 {
 539         SHADOW_NEXT(SYS_ACL_GET_FILE,
 540                     (handle, cpath ?: path, type),
 541                     SMB_ACL_T);
 542 }
 543
 544 static int
 545 onefs_shadow_copy_sys_acl_set_file(vfs_handle_struct *handle, const char *path,
 546                                    SMB_ACL_TYPE_T type, SMB_ACL_T theacl)
 547 {
 548         SHADOW_NEXT(SYS_ACL_SET_FILE,
 549                     (handle, cpath ?: path, type, theacl),
 550                     int);
 551 }
 552
 553 static int
 554 onefs_shadow_copy_sys_acl_delete_def_file(vfs_handle_struct *handle,
 555                                           const char *path)
 556 {
 557         SHADOW_NEXT(SYS_ACL_DELETE_DEF_FILE,
 558                     (handle, cpath ?: path),
 559                     int);
 560 }
 561
 562 static ssize_t
 563 onefs_shadow_copy_getxattr(vfs_handle_struct *handle, const char *path,
 564                            const char *name, void *value, size_t size)
 565 {
 566         SHADOW_NEXT(GETXATTR,
 567                     (handle, cpath ?: path, name, value, size),
 568                     ssize_t);
 569 }
 570
 571 static ssize_t
 572 onefs_shadow_copy_listxattr(vfs_handle_struct *handle, const char *path,
 573                             char *list, size_t size)
 574 {
 575         SHADOW_NEXT(LISTXATTR,
 576                     (handle, cpath ?: path, list, size),
 577                     ssize_t);
 578 }
 579
 580 static int
 581 onefs_shadow_copy_removexattr(vfs_handle_struct *handle, const char *path,
 582                               const char *name)
 583 {
 584         SHADOW_NEXT(REMOVEXATTR,
 585                     (handle, cpath ?: path, name),
 586                     int);
 587 }
 588
 589 static int
 590 onefs_shadow_copy_setxattr(vfs_handle_struct *handle, const char *path,
 591                            const char *name, const void *value, size_t size,
 592                            int flags)
 593 {
 594         SHADOW_NEXT(SETXATTR,
 595                     (handle, cpath ?: path, name, value, size, flags),
 596                     int);
 597 }
 598
 599 static bool
 600 onefs_shadow_copy_is_offline(struct vfs_handle_struct *handle,
 601                              const struct smb_fname *fname,
 602                              SMB_STRUCT_STAT *sbuf)
 603 {
 604 #error Isilon, please convert "char *path" to "struct smb_fname *fname"
 605         SHADOW_NEXT(IS_OFFLINE,
 606                     (handle, cpath ?: path, sbuf),
 607                     bool);
 608 }
 609
 610 static int
 611 onefs_shadow_copy_set_offline(struct vfs_handle_struct *handle,
 612                                const struct smb_filename *fname)
 613 {
 614 #error Isilon, please convert "char *path" to "struct smb_fname *fname"
 615         SHADOW_NEXT(SET_OFFLINE,
 616                     (handle, cpath ?: path),
 617                     int);
 618 }
 619
 620 /* VFS operations structure */
 621
 622 static struct vfs_fn_pointers onefs_shadow_copy_fns = {
 623         .disk_free_fn = onefs_shadow_copy_disk_free,
 624         .get_shadow_copy_data_fn = onefs_shadow_copy_get_shadow_copy_data,
 625         .statvfs_fn = onefs_shadow_copy_statvfs,
 626         .opendir_fn = onefs_shadow_copy_opendir,
 627         .mkdir_fn = onefs_shadow_copy_mkdir,
 628         .rmdir_fn = onefs_shadow_copy_rmdir,
 629         .open_fn = onefs_shadow_copy_open,
 630         .create_file_fn = onefs_shadow_copy_create_file,
 631         .rename_fn = onefs_shadow_copy_rename,
 632         .stat_fn = onefs_shadow_copy_stat,
 633         .stat_fn = onefs_shadow_copy_stat,
 634         .lstat_fn = onefs_shadow_copy_lstat,
 635         .unlink_fn = onefs_shadow_copy_unlink,
 636         .chmod_fn = onefs_shadow_copy_chmod,
 637         .chown_fn = onefs_shadow_copy_chown,
 638         .lchown_fn = onefs_shadow_copy_lchown,
 639         .chdir_fn = onefs_shadow_copy_chdir,
 640         .ntimes_fn = onefs_shadow_copy_ntimes,
 641         .symlink_fn = onefs_shadow_copy_symlink,
 642         .readlink_fn = onefs_shadow_copy_readlink,
 643         .link_fn = onefs_shadow_copy_link,
 644         .mknod_fn = onefs_shadow_copy_mknod,
 645         .realpath_fn = onefs_shadow_copy_realpath,
 646         .chflags_fn = onefs_shadow_copy_chflags,
 647         .streaminfo_fn = onefs_shadow_copy_streaminfo,
 648         .get_real_filename_fn = onefs_shadow_copy_get_real_filename,
 649         .get_nt_acl_fn = onefs_shadow_copy_get_nt_acl,
 650         .chmod_acl_fn = onefs_shadow_copy_chmod_acl,
 651         .sys_acl_get_file_fn = onefs_shadow_copy_sys_acl_get_file,
 652         .sys_acl_set_file_fn = onefs_shadow_copy_sys_acl_set_file,
 653         .sys_acl_delete_def_file_fn = onefs_shadow_copy_sys_acl_delete_def_file,
 654         .getxattr_fn = onefs_shadow_copy_getxattr,
 655         .listxattr_fn = onefs_shadow_copy_listxattr,
 656         .removexattr_fn = onefs_shadow_copy_removexattr,
 657         .setxattr_fn = onefs_shadow_copy_setxattr,
 658         .lsetxattr_fn = onefs_shadow_copy_lsetxattr,
 659         .is_offline_fn = onefs_shadow_copy_is_offline,
 660         .set_offline_fn = onefs_shadow_copy_set_offline,
 661 };
 662
 663 NTSTATUS vfs_shadow_copy_init(void)
 664 {
 665         NTSTATUS ret;
 666
 667         ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
 668                                "onefs_shadow_copy",
 669                                &onefs_shadow_copy_fns);
 670
 671         if (!NT_STATUS_IS_OK(ret))
 672                 return ret;
 673
 674         vfs_onefs_shadow_copy_debug_level = debug_add_class("onefs_shadow_copy");
 675
 676         if (vfs_onefs_shadow_copy_debug_level == -1) {
 677                 vfs_onefs_shadow_copy_debug_level = DBGC_VFS;
 678                 DEBUG(0, ("Couldn't register custom debugging class!\n"));
 679         } else {
 680                 DEBUG(10, ("Debug class number of 'onefs_shadow_copy': %d\n",
 681                            vfs_onefs_shadow_copy_debug_level));
 682         }
 683
 684         return ret;
 685 }