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 "onefs_shadow_copy.h"
  26
  27 static int vfs_onefs_shadow_copy_debug_level = DBGC_VFS;
  28
  29 #undef DBGC_CLASS
  30 #define DBGC_CLASS vfs_onefs_shadow_copy_debug_level
  31
  32 #define SHADOW_COPY_PREFIX "@GMT-"
  33 #define SHADOW_COPY_SAMPLE "@GMT-2004.02.18-15.44.00"
  34
  35 bool
  36 shadow_copy_match_name(const char *name, char **snap_component)
  37 {
  38         uint32  i = 0;
  39         char delim[] = SHADOW_COPY_PREFIX;
  40         char* start;
  41
  42         start = strstr( name, delim );
  43
  44         /*
  45          * The name could have SHADOW_COPY_PREFIX in it so we need to keep
  46          * trying until we get something that is the full length of the
  47          * SHADOW_COPY_SAMPLE.
  48          */
  49         while (start != NULL) {
  50
  51                 DEBUG(10,("Processing %s\n", name));
  52
  53                 /* size / correctness check */
  54                 *snap_component = start;
  55                 for ( i = sizeof(SHADOW_COPY_PREFIX);
  56                       i < sizeof(SHADOW_COPY_SAMPLE); i++) {
  57                         if (start[i] == '/') {
  58                                 if (i == sizeof(SHADOW_COPY_SAMPLE) - 1)
  59                                         return true;
  60                                 else
  61                                         break;
  62                         } else if (start[i] == '\0')
  63                                 return (i == sizeof(SHADOW_COPY_SAMPLE) - 1);
  64                 }
  65
  66                 start = strstr( start, delim );
  67         }
  68
  69         return false;
  70 }
  71
  72 static int
  73 onefs_shadow_copy_get_shadow_copy_data(vfs_handle_struct *handle,
  74                                        files_struct *fsp,
  75                                        SHADOW_COPY_DATA *shadow_copy_data,
  76                                        bool labels)
  77 {
  78         void *p = osc_version_opendir();
  79         char *snap_component = NULL;
  80         shadow_copy_data->num_volumes = 0;
  81         shadow_copy_data->labels = NULL;
  82
  83         if (!p) {
  84                 DEBUG(0, ("shadow_copy_get_shadow_copy_data: osc_opendir() "
  85                           "failed for [%s]\n",fsp->conn->connectpath));
  86                 return -1;
  87         }
  88
  89         while (true) {
  90                 SHADOW_COPY_LABEL *tlabels;
  91                 char *d;
  92
  93                 d = osc_version_readdir(p);
  94                 if (d == NULL)
  95                         break;
  96
  97                 if (!shadow_copy_match_name(d, &snap_component)) {
  98                         DEBUG(10,("shadow_copy_get_shadow_copy_data: ignore "
  99                                   "[%s]\n",d));
 100                         continue;
 101                 }
 102
 103                 DEBUG(7,("shadow_copy_get_shadow_copy_data: not ignore "
 104                          "[%s]\n",d));
 105
 106                 if (!labels) {
 107                         shadow_copy_data->num_volumes++;
 108                         continue;
 109                 }
 110
 111                 tlabels = (SHADOW_COPY_LABEL *)TALLOC_REALLOC(
 112                         shadow_copy_data->mem_ctx,
 113                         shadow_copy_data->labels,
 114                         (shadow_copy_data->num_volumes+1) *
 115                         sizeof(SHADOW_COPY_LABEL));
 116
 117                 if (tlabels == NULL) {
 118                         DEBUG(0,("shadow_copy_get_shadow_copy_data: Out of "
 119                                  "memory\n"));
 120                         osc_version_closedir(p);
 121                         return -1;
 122                 }
 123
 124                 snprintf(tlabels[shadow_copy_data->num_volumes++],
 125                          sizeof(*tlabels), "%s",d);
 126
 127                 shadow_copy_data->labels = tlabels;
 128         }
 129
 130         osc_version_closedir(p);
 131
 132         return 0;
 133 }
 134
 135 #define SHADOW_NEXT(op, args, rtype) do {                             \
 136         char *cpath = NULL;                                           \
 137         char *snap_component = NULL;                                  \
 138         rtype ret;                                                    \
 139         if (shadow_copy_match_name(path, &snap_component))            \
 140                 cpath = osc_canonicalize_path(path, snap_component); \
 141         ret = SMB_VFS_NEXT_ ## op args;                               \
 142         SAFE_FREE(cpath);                                             \
 143         return ret;                                                   \
 144         } while (0)                                                   \
 145
 146 /*
 147  * XXX: Convert osc_canonicalize_path to use talloc instead of malloc.
 148  */
 149 #define SHADOW_NEXT_SMB_FNAME(op, args, rtype) do {                   \
 150                 char *smb_base_name_tmp = NULL;                       \
 151                 char *cpath = NULL;                                   \
 152                 char *snap_component = NULL;                          \
 153                 rtype ret;                                            \
 154                 smb_base_name_tmp = smb_fname->base_name;             \
 155                 if (shadow_copy_match_name(smb_fname->base_name,      \
 156                         &snap_component)) {                             \
 157                         cpath = osc_canonicalize_path(smb_fname->base_name, \
 158                             snap_component);                            \
 159                         smb_fname->base_name = cpath;                   \
 160                 }                                                       \
 161                 ret = SMB_VFS_NEXT_ ## op args;                         \
 162                 smb_fname->base_name = smb_base_name_tmp;               \
 163                 SAFE_FREE(cpath);                                       \
 164                 return ret;                                             \
 165         } while (0)                                                     \
 166
 167 static uint64_t
 168 onefs_shadow_copy_disk_free(vfs_handle_struct *handle, const char *path,
 169                             bool small_query, uint64_t *bsize, uint64_t *dfree,
 170                             uint64_t *dsize)
 171 {
 172
 173         SHADOW_NEXT(DISK_FREE,
 174                     (handle, cpath ?: path, small_query, bsize, dfree, dsize),
 175                     uint64_t);
 176
 177 }
 178
 179 static int
 180 onefs_shadow_copy_statvfs(struct vfs_handle_struct *handle, const char *path,
 181                           struct vfs_statvfs_struct *statbuf)
 182 {
 183         SHADOW_NEXT(STATVFS,
 184                     (handle, cpath ?: path, statbuf),
 185                     int);
 186 }
 187
 188 static SMB_STRUCT_DIR *
 189 onefs_shadow_copy_opendir(vfs_handle_struct *handle, const char *path,
 190                           const char *mask, uint32_t attr)
 191 {
 192         SHADOW_NEXT(OPENDIR,
 193                     (handle, cpath ?: path, mask, attr),
 194                     SMB_STRUCT_DIR *);
 195 }
 196
 197 static int
 198 onefs_shadow_copy_mkdir(vfs_handle_struct *handle, const char *path,
 199                         mode_t mode)
 200 {
 201         SHADOW_NEXT(MKDIR,
 202                     (handle, cpath ?: path, mode),
 203                     int);
 204 }
 205
 206 static int
 207 onefs_shadow_copy_rmdir(vfs_handle_struct *handle, const char *path)
 208 {
 209         SHADOW_NEXT(RMDIR,
 210                     (handle, cpath ?: path),
 211                     int);
 212 }
 213
 214 static int
 215 onefs_shadow_copy_open(vfs_handle_struct *handle,
 216                        struct smb_filename *smb_fname, files_struct *fsp,
 217                        int flags, mode_t mode)
 218 {
 219         SHADOW_NEXT_SMB_FNAME(OPEN,
 220                               (handle, smb_fname, fsp, flags, mode),
 221                               int);
 222 }
 223
 224 static NTSTATUS
 225 onefs_shadow_copy_create_file(vfs_handle_struct *handle,
 226                               struct smb_request *req,
 227                               uint16_t root_dir_fid,
 228                               struct smb_filename *smb_fname,
 229                               uint32_t access_mask,
 230                               uint32_t share_access,
 231                               uint32_t create_disposition,
 232                               uint32_t create_options,
 233                               uint32_t file_attributes,
 234                               uint32_t oplock_request,
 235                               uint64_t allocation_size,
 236                               struct security_descriptor *sd,
 237                               struct ea_list *ea_list,
 238                               files_struct **result,
 239                               int *pinfo)
 240 {
 241         SHADOW_NEXT_SMB_FNAME(CREATE_FILE,
 242                               (handle, req, root_dir_fid, smb_fname,
 243                                   access_mask, share_access,
 244                                   create_disposition, create_options,
 245                                   file_attributes, oplock_request,
 246                                   allocation_size, sd, ea_list, result, pinfo),
 247                               NTSTATUS);
 248 }
 249
 250 /**
 251  * XXX: macro-ize
 252  */
 253 static int
 254 onefs_shadow_copy_rename(vfs_handle_struct *handle,
 255                          const struct smb_filename *smb_fname_src,
 256                          const struct smb_filename *smb_fname_dst)
 257 {
 258         char *old_cpath = NULL;
 259         char *old_snap_component = NULL;
 260         char *new_cpath = NULL;
 261         char *new_snap_component = NULL;
 262         struct smb_filename *smb_fname_src_tmp = NULL;
 263         struct smb_filename *smb_fname_dst_tmp = NULL;
 264         NTSTATUS status;
 265         int ret = -1;
 266
 267         status = copy_smb_filename(talloc_tos(), smb_fname_src,
 268                                    &smb_fname_src_tmp);
 269         if (!NT_STATUS_IS_OK(status)) {
 270                 errno = map_errno_from_nt_status(status);
 271                 goto out;
 272         }
 273         status = copy_smb_filename(talloc_tos(), smb_fname_dst,
 274                                    &smb_fname_dst_tmp);
 275         if (!NT_STATUS_IS_OK(status)) {
 276                 errno = map_errno_from_nt_status(status);
 277                 goto out;
 278         }
 279
 280         if (shadow_copy_match_name(smb_fname_src_tmp->base_name,
 281                                    &old_snap_component)) {
 282                 old_cpath = osc_canonicalize_path(smb_fname_src_tmp->base_name,
 283                                           old_snap_component);
 284                 smb_fname_src_tmp->base_name = old_cpath;
 285         }
 286
 287         if (shadow_copy_match_name(smb_fname_dst_tmp->base_name,
 288                                    &new_snap_component)) {
 289                 new_cpath = osc_canonicalize_path(smb_fname_dst_tmp->base_name,
 290                                           new_snap_component);
 291                 smb_fname_dst_tmp->base_name = new_cpath;
 292         }
 293
 294         ret = SMB_VFS_NEXT_RENAME(handle, smb_fname_src_tmp,
 295                                   smb_fname_dst_tmp);
 296
 297  out:
 298         SAFE_FREE(old_cpath);
 299         SAFE_FREE(new_cpath);
 300         TALLOC_FREE(smb_fname_src_tmp);
 301         TALLOC_FREE(smb_fname_dst_tmp);
 302
 303         return ret;
 304 }
 305
 306 static int
 307 onefs_shadow_copy_stat(vfs_handle_struct *handle,
 308                        struct smb_filename *smb_fname)
 309 {
 310         SHADOW_NEXT_SMB_FNAME(STAT,
 311                               (handle, smb_fname),
 312                               int);
 313 }
 314
 315 static int
 316 onefs_shadow_copy_lstat(vfs_handle_struct *handle,
 317                         struct smb_filename *smb_fname)
 318 {
 319         SHADOW_NEXT_SMB_FNAME(LSTAT,
 320                               (handle, smb_fname),
 321                               int);
 322 }
 323
 324 static int
 325 onefs_shadow_copy_unlink(vfs_handle_struct *handle,
 326                          const struct smb_filename *smb_fname_in)
 327 {
 328         struct smb_filename *smb_fname = NULL;
 329         NTSTATUS status;
 330
 331         status = copy_smb_filename(talloc_tos(), smb_fname_in, &smb_fname);
 332         if (!NT_STATUS_IS_OK(status)) {
 333                 errno = map_errno_from_nt_status(status);
 334                 return -1;
 335         }
 336
 337         SHADOW_NEXT_SMB_FNAME(UNLINK,
 338                               (handle, smb_fname),
 339                               int);
 340 }
 341
 342 static int
 343 onefs_shadow_copy_chmod(vfs_handle_struct *handle, const char *path,
 344                         mode_t mode)
 345 {
 346         SHADOW_NEXT(CHMOD,
 347                     (handle, cpath ?: path, mode),
 348                     int);
 349 }
 350
 351 static int
 352 onefs_shadow_copy_chown(vfs_handle_struct *handle, const char *path,
 353                         uid_t uid, gid_t gid)
 354 {
 355         SHADOW_NEXT(CHOWN,
 356                     (handle, cpath ?: path, uid, gid),
 357                     int);
 358 }
 359
 360 static int
 361 onefs_shadow_copy_lchown(vfs_handle_struct *handle, const char *path,
 362                          uid_t uid, gid_t gid)
 363 {
 364         SHADOW_NEXT(LCHOWN,
 365                     (handle, cpath ?: path, uid, gid),
 366                     int);
 367 }
 368
 369 static int
 370 onefs_shadow_copy_chdir(vfs_handle_struct *handle, const char *path)
 371 {
 372         SHADOW_NEXT(CHDIR,
 373                     (handle, cpath ?: path),
 374                     int);
 375 }
 376
 377 static int
 378 onefs_shadow_copy_ntimes(vfs_handle_struct *handle,
 379                         const struct smb_filename *smb_fname_in,
 380                         struct smb_file_time *ft)
 381 {
 382         struct smb_filename *smb_fname = NULL;
 383         NTSTATUS status;
 384
 385         status = copy_smb_filename(talloc_tos(), smb_fname_in, &smb_fname);
 386         if (!NT_STATUS_IS_OK(status)) {
 387                 errno = map_errno_from_nt_status(status);
 388                 return -1;
 389         }
 390
 391         SHADOW_NEXT_SMB_FNAME(NTIMES,
 392                               (handle, smb_fname, ft),
 393                               int);
 394
 395 }
 396
 397 /**
 398  * XXX: macro-ize
 399  */
 400 static bool
 401 onefs_shadow_copy_symlink(vfs_handle_struct *handle,
 402     const char *oldpath, const char *newpath)
 403 {
 404         char *old_cpath = NULL;
 405         char *old_snap_component = NULL;
 406         char *new_cpath = NULL;
 407         char *new_snap_component = NULL;
 408         bool ret;
 409
 410         if (shadow_copy_match_name(oldpath, &old_snap_component))
 411                 old_cpath = osc_canonicalize_path(oldpath, old_snap_component);
 412
 413         if (shadow_copy_match_name(newpath, &new_snap_component))
 414                 new_cpath = osc_canonicalize_path(newpath, new_snap_component);
 415
 416         ret = SMB_VFS_NEXT_SYMLINK(handle, old_cpath ?: oldpath,
 417             new_cpath ?: newpath);
 418
 419         SAFE_FREE(old_cpath);
 420         SAFE_FREE(new_cpath);
 421
 422         return ret;
 423 }
 424
 425 static int
 426 onefs_shadow_copy_readlink(vfs_handle_struct *handle, const char *path,
 427                            char *buf, size_t bufsiz)
 428 {
 429         SHADOW_NEXT(READLINK,
 430                     (handle, cpath ?: path, buf, bufsiz),
 431                     int);
 432 }
 433
 434 /**
 435  * XXX: macro-ize
 436  */
 437 static int
 438 onefs_shadow_copy_link(vfs_handle_struct *handle, const char *oldpath,
 439                        const char *newpath)
 440 {
 441         char *old_cpath = NULL;
 442         char *old_snap_component = NULL;
 443         char *new_cpath = NULL;
 444         char *new_snap_component = NULL;
 445         int ret;
 446
 447         if (shadow_copy_match_name(oldpath, &old_snap_component))
 448                 old_cpath = osc_canonicalize_path(oldpath, old_snap_component);
 449
 450         if (shadow_copy_match_name(newpath, &new_snap_component))
 451                 new_cpath = osc_canonicalize_path(newpath, new_snap_component);
 452
 453         ret = SMB_VFS_NEXT_LINK(handle, old_cpath ?: oldpath,
 454             new_cpath ?: newpath);
 455
 456         SAFE_FREE(old_cpath);
 457         SAFE_FREE(new_cpath);
 458
 459         return ret;
 460 }
 461
 462 static int
 463 onefs_shadow_copy_mknod(vfs_handle_struct *handle, const char *path,
 464                         mode_t mode, SMB_DEV_T dev)
 465 {
 466         SHADOW_NEXT(MKNOD,
 467                     (handle, cpath ?: path, mode, dev),
 468                     int);
 469 }
 470
 471 static char *
 472 onefs_shadow_copy_realpath(vfs_handle_struct *handle, const char *path,
 473                            char *resolved_path)
 474 {
 475         SHADOW_NEXT(REALPATH,
 476                     (handle, cpath ?: path, resolved_path),
 477                     char *);
 478 }
 479
 480 static int onefs_shadow_copy_chflags(struct vfs_handle_struct *handle,
 481                                      const char *path, unsigned int flags)
 482 {
 483         SHADOW_NEXT(CHFLAGS,
 484                     (handle, cpath ?: path, flags),
 485                     int);
 486 }
 487
 488 static NTSTATUS
 489 onefs_shadow_copy_streaminfo(struct vfs_handle_struct *handle,
 490                              struct files_struct *fsp,
 491                              const char *path,
 492                              TALLOC_CTX *mem_ctx,
 493                              unsigned int *num_streams,
 494                              struct stream_struct **streams)
 495 {
 496         SHADOW_NEXT(STREAMINFO,
 497                     (handle, fsp, cpath ?: path, mem_ctx, num_streams,
 498                         streams),
 499                     NTSTATUS);
 500 }
 501
 502 static int
 503 onefs_shadow_copy_get_real_filename(struct vfs_handle_struct *handle,
 504                                     const char *full_path,
 505                                     const char *path,
 506                                     TALLOC_CTX *mem_ctx,
 507                                     char **found_name)
 508 {
 509         SHADOW_NEXT(GET_REAL_FILENAME,
 510                     (handle, full_path, cpath ?: path, mem_ctx, found_name),
 511                     int);
 512 }
 513
 514 static NTSTATUS
 515 onefs_shadow_copy_get_nt_acl(struct vfs_handle_struct *handle,
 516                             const char *path, uint32 security_info,
 517                             struct security_descriptor **ppdesc)
 518 {
 519         SHADOW_NEXT(GET_NT_ACL,
 520                     (handle, cpath ?: path, security_info, ppdesc),
 521                     NTSTATUS);
 522 }
 523
 524 static int
 525 onefs_shadow_copy_chmod_acl(vfs_handle_struct *handle, const char *path,
 526                             mode_t mode)
 527 {
 528         SHADOW_NEXT(CHMOD_ACL,
 529                     (handle, cpath ?: path, mode),
 530                     int);
 531 }
 532
 533 static SMB_ACL_T
 534 onefs_shadow_copy_sys_acl_get_file(vfs_handle_struct *handle,
 535                                    const char *path, SMB_ACL_TYPE_T type)
 536 {
 537         SHADOW_NEXT(SYS_ACL_GET_FILE,
 538                     (handle, cpath ?: path, type),
 539                     SMB_ACL_T);
 540 }
 541
 542 static int
 543 onefs_shadow_copy_sys_acl_set_file(vfs_handle_struct *handle, const char *path,
 544                                    SMB_ACL_TYPE_T type, SMB_ACL_T theacl)
 545 {
 546         SHADOW_NEXT(SYS_ACL_SET_FILE,
 547                     (handle, cpath ?: path, type, theacl),
 548                     int);
 549 }
 550
 551 static int
 552 onefs_shadow_copy_sys_acl_delete_def_file(vfs_handle_struct *handle,
 553                                           const char *path)
 554 {
 555         SHADOW_NEXT(SYS_ACL_DELETE_DEF_FILE,
 556                     (handle, cpath ?: path),
 557                     int);
 558 }
 559
 560 static ssize_t
 561 onefs_shadow_copy_getxattr(vfs_handle_struct *handle, const char *path,
 562                            const char *name, void *value, size_t size)
 563 {
 564         SHADOW_NEXT(GETXATTR,
 565                     (handle, cpath ?: path, name, value, size),
 566                     ssize_t);
 567 }
 568
 569 static ssize_t
 570 onefs_shadow_copy_lgetxattr(vfs_handle_struct *handle, const char *path,
 571                             const char *name, void *value, size_t size)
 572 {
 573         SHADOW_NEXT(LGETXATTR,
 574                     (handle, cpath ?: path, name, value, size),
 575                     ssize_t);
 576 }
 577
 578 static ssize_t
 579 onefs_shadow_copy_listxattr(vfs_handle_struct *handle, const char *path,
 580                             char *list, size_t size)
 581 {
 582         SHADOW_NEXT(LISTXATTR,
 583                     (handle, cpath ?: path, list, size),
 584                     ssize_t);
 585 }
 586
 587 static ssize_t
 588 onefs_shadow_copy_llistxattr(vfs_handle_struct *handle, const char *path,
 589                              char *list, size_t size)
 590 {
 591         SHADOW_NEXT(LLISTXATTR,
 592                     (handle, cpath ?: path, list, size),
 593                     ssize_t);
 594 }
 595
 596 static int
 597 onefs_shadow_copy_removexattr(vfs_handle_struct *handle, const char *path,
 598                               const char *name)
 599 {
 600         SHADOW_NEXT(REMOVEXATTR,
 601                     (handle, cpath ?: path, name),
 602                     int);
 603 }
 604
 605 static int
 606 onefs_shadow_copy_lremovexattr(vfs_handle_struct *handle, const char *path,
 607                                const char *name)
 608 {
 609         SHADOW_NEXT(LREMOVEXATTR,
 610                     (handle, cpath ?: path, name),
 611                     int);
 612 }
 613
 614 static int
 615 onefs_shadow_copy_setxattr(vfs_handle_struct *handle, const char *path,
 616                            const char *name, const void *value, size_t size,
 617                            int flags)
 618 {
 619         SHADOW_NEXT(SETXATTR,
 620                     (handle, cpath ?: path, name, value, size, flags),
 621                     int);
 622 }
 623
 624 static int
 625 onefs_shadow_copy_lsetxattr(vfs_handle_struct *handle, const char *path,
 626                             const char *name, const void *value, size_t size,
 627                             int flags)
 628 {
 629         SHADOW_NEXT(LSETXATTR,
 630                     (handle, cpath ?: path, name, value, size, flags),
 631                     int);
 632 }
 633
 634 static bool
 635 onefs_shadow_copy_is_offline(struct vfs_handle_struct *handle,
 636                              const char *path, SMB_STRUCT_STAT *sbuf)
 637 {
 638         SHADOW_NEXT(IS_OFFLINE,
 639                     (handle, cpath ?: path, sbuf),
 640                     bool);
 641 }
 642
 643 static int
 644 onefs_shadow_copy_set_offline(struct vfs_handle_struct *handle,
 645                               const char *path)
 646 {
 647         SHADOW_NEXT(SET_OFFLINE,
 648                     (handle, cpath ?: path),
 649                     int);
 650 }
 651
 652 /* VFS operations structure */
 653
 654 static vfs_op_tuple onefs_shadow_copy_ops[] = {
 655
 656         /* Disk operations */
 657
 658         {SMB_VFS_OP(onefs_shadow_copy_disk_free), SMB_VFS_OP_DISK_FREE,
 659          SMB_VFS_LAYER_TRANSPARENT},
 660         {SMB_VFS_OP(onefs_shadow_copy_get_shadow_copy_data),
 661          SMB_VFS_OP_GET_SHADOW_COPY_DATA, SMB_VFS_LAYER_OPAQUE},
 662         {SMB_VFS_OP(onefs_shadow_copy_statvfs), SMB_VFS_OP_STATVFS,
 663          SMB_VFS_LAYER_TRANSPARENT},
 664
 665         /* Directory operations */
 666
 667         {SMB_VFS_OP(onefs_shadow_copy_opendir), SMB_VFS_OP_OPENDIR,
 668          SMB_VFS_LAYER_TRANSPARENT},
 669         {SMB_VFS_OP(onefs_shadow_copy_mkdir), SMB_VFS_OP_MKDIR,
 670          SMB_VFS_LAYER_TRANSPARENT},
 671         {SMB_VFS_OP(onefs_shadow_copy_rmdir), SMB_VFS_OP_RMDIR,
 672          SMB_VFS_LAYER_TRANSPARENT},
 673
 674         /* File operations */
 675
 676         {SMB_VFS_OP(onefs_shadow_copy_open), SMB_VFS_OP_OPEN,
 677          SMB_VFS_LAYER_TRANSPARENT},
 678         {SMB_VFS_OP(onefs_shadow_copy_create_file), SMB_VFS_OP_CREATE_FILE,
 679          SMB_VFS_LAYER_TRANSPARENT},
 680         {SMB_VFS_OP(onefs_shadow_copy_rename), SMB_VFS_OP_RENAME,
 681          SMB_VFS_LAYER_TRANSPARENT},
 682         {SMB_VFS_OP(onefs_shadow_copy_stat), SMB_VFS_OP_STAT,
 683          SMB_VFS_LAYER_TRANSPARENT},
 684         {SMB_VFS_OP(onefs_shadow_copy_stat), SMB_VFS_OP_STAT,
 685          SMB_VFS_LAYER_TRANSPARENT},
 686         {SMB_VFS_OP(onefs_shadow_copy_lstat), SMB_VFS_OP_LSTAT,
 687          SMB_VFS_LAYER_TRANSPARENT},
 688         {SMB_VFS_OP(onefs_shadow_copy_unlink), SMB_VFS_OP_UNLINK,
 689          SMB_VFS_LAYER_TRANSPARENT},
 690         {SMB_VFS_OP(onefs_shadow_copy_chmod), SMB_VFS_OP_CHMOD,
 691          SMB_VFS_LAYER_TRANSPARENT},
 692         {SMB_VFS_OP(onefs_shadow_copy_chown), SMB_VFS_OP_CHOWN,
 693          SMB_VFS_LAYER_TRANSPARENT},
 694         {SMB_VFS_OP(onefs_shadow_copy_lchown), SMB_VFS_OP_LCHOWN,
 695          SMB_VFS_LAYER_TRANSPARENT},
 696         {SMB_VFS_OP(onefs_shadow_copy_chdir), SMB_VFS_OP_CHDIR,
 697          SMB_VFS_LAYER_TRANSPARENT},
 698         {SMB_VFS_OP(onefs_shadow_copy_ntimes), SMB_VFS_OP_NTIMES,
 699          SMB_VFS_LAYER_TRANSPARENT},
 700         {SMB_VFS_OP(onefs_shadow_copy_symlink), SMB_VFS_OP_SYMLINK,
 701          SMB_VFS_LAYER_TRANSPARENT},
 702         {SMB_VFS_OP(onefs_shadow_copy_readlink), SMB_VFS_OP_READLINK,
 703          SMB_VFS_LAYER_TRANSPARENT},
 704         {SMB_VFS_OP(onefs_shadow_copy_link), SMB_VFS_OP_LINK,
 705          SMB_VFS_LAYER_TRANSPARENT},
 706         {SMB_VFS_OP(onefs_shadow_copy_mknod), SMB_VFS_OP_MKNOD,
 707          SMB_VFS_LAYER_TRANSPARENT},
 708         {SMB_VFS_OP(onefs_shadow_copy_realpath), SMB_VFS_OP_REALPATH,
 709          SMB_VFS_LAYER_TRANSPARENT},
 710         {SMB_VFS_OP(onefs_shadow_copy_chflags), SMB_VFS_OP_CHFLAGS,
 711          SMB_VFS_LAYER_TRANSPARENT},
 712         {SMB_VFS_OP(onefs_shadow_copy_streaminfo), SMB_VFS_OP_STREAMINFO,
 713          SMB_VFS_LAYER_TRANSPARENT},
 714         {SMB_VFS_OP(onefs_shadow_copy_get_real_filename),
 715          SMB_VFS_OP_GET_REAL_FILENAME, SMB_VFS_LAYER_TRANSPARENT},
 716
 717         /* NT File ACL operations */
 718
 719         {SMB_VFS_OP(onefs_shadow_copy_get_nt_acl), SMB_VFS_OP_GET_NT_ACL,
 720          SMB_VFS_LAYER_TRANSPARENT},
 721
 722         /* POSIX ACL operations */
 723
 724         {SMB_VFS_OP(onefs_shadow_copy_chmod_acl), SMB_VFS_OP_CHMOD_ACL,
 725          SMB_VFS_LAYER_TRANSPARENT},
 726         {SMB_VFS_OP(onefs_shadow_copy_sys_acl_get_file),
 727          SMB_VFS_OP_SYS_ACL_GET_FILE, SMB_VFS_LAYER_TRANSPARENT},
 728         {SMB_VFS_OP(onefs_shadow_copy_sys_acl_set_file),
 729          SMB_VFS_OP_SYS_ACL_SET_FILE, SMB_VFS_LAYER_TRANSPARENT},
 730         {SMB_VFS_OP(onefs_shadow_copy_sys_acl_delete_def_file),
 731          SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE, SMB_VFS_LAYER_TRANSPARENT},
 732
 733         /* EA operations. */
 734
 735         {SMB_VFS_OP(onefs_shadow_copy_getxattr), SMB_VFS_OP_GETXATTR,
 736          SMB_VFS_LAYER_TRANSPARENT},
 737         {SMB_VFS_OP(onefs_shadow_copy_lgetxattr), SMB_VFS_OP_LGETXATTR,
 738          SMB_VFS_LAYER_TRANSPARENT},
 739         {SMB_VFS_OP(onefs_shadow_copy_listxattr), SMB_VFS_OP_LISTXATTR,
 740          SMB_VFS_LAYER_TRANSPARENT},
 741         {SMB_VFS_OP(onefs_shadow_copy_llistxattr), SMB_VFS_OP_LLISTXATTR,
 742          SMB_VFS_LAYER_TRANSPARENT},
 743         {SMB_VFS_OP(onefs_shadow_copy_removexattr), SMB_VFS_OP_REMOVEXATTR,
 744          SMB_VFS_LAYER_TRANSPARENT},
 745         {SMB_VFS_OP(onefs_shadow_copy_lremovexattr), SMB_VFS_OP_LREMOVEXATTR,
 746          SMB_VFS_LAYER_TRANSPARENT},
 747         {SMB_VFS_OP(onefs_shadow_copy_setxattr), SMB_VFS_OP_SETXATTR,
 748          SMB_VFS_LAYER_TRANSPARENT},
 749         {SMB_VFS_OP(onefs_shadow_copy_lsetxattr), SMB_VFS_OP_LSETXATTR,
 750          SMB_VFS_LAYER_TRANSPARENT},
 751
 752         /* offline operations */
 753         {SMB_VFS_OP(onefs_shadow_copy_is_offline), SMB_VFS_OP_IS_OFFLINE,
 754          SMB_VFS_LAYER_TRANSPARENT},
 755         {SMB_VFS_OP(onefs_shadow_copy_set_offline), SMB_VFS_OP_SET_OFFLINE,
 756          SMB_VFS_LAYER_TRANSPARENT},
 757
 758         {SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
 759 };
 760
 761 NTSTATUS vfs_shadow_copy_init(void)
 762 {
 763         NTSTATUS ret;
 764
 765         ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
 766                                "onefs_shadow_copy",
 767                                onefs_shadow_copy_ops);
 768
 769         if (!NT_STATUS_IS_OK(ret))
 770                 return ret;
 771
 772         vfs_onefs_shadow_copy_debug_level = debug_add_class("onefs_shadow_copy");
 773
 774         if (vfs_onefs_shadow_copy_debug_level == -1) {
 775                 vfs_onefs_shadow_copy_debug_level = DBGC_VFS;
 776                 DEBUG(0, ("Couldn't register custom debugging class!\n"));
 777         } else {
 778                 DEBUG(10, ("Debug class number of 'onefs_shadow_copy': %d\n",
 779                            vfs_onefs_shadow_copy_debug_level));
 780         }
 781
 782         return ret;
 783 }