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
 168
 169 static uint64_t
 170 onefs_shadow_copy_disk_free(vfs_handle_struct *handle, const char *path,
 171                             bool small_query, uint64_t *bsize, uint64_t *dfree,
 172                             uint64_t *dsize)
 173 {
 174
 175         SHADOW_NEXT(DISK_FREE,
 176                     (handle, cpath ?: path, small_query, bsize, dfree, dsize),
 177                     uint64_t);
 178
 179 }
 180
 181 static int
 182 onefs_shadow_copy_statvfs(struct vfs_handle_struct *handle, const char *path,
 183                           struct vfs_statvfs_struct *statbuf)
 184 {
 185         SHADOW_NEXT(STATVFS,
 186                     (handle, cpath ?: path, statbuf),
 187                     int);
 188 }
 189
 190 static SMB_STRUCT_DIR *
 191 onefs_shadow_copy_opendir(vfs_handle_struct *handle, const char *path,
 192                           const char *mask, uint32_t attr)
 193 {
 194         SHADOW_NEXT(OPENDIR,
 195                     (handle, cpath ?: path, mask, attr),
 196                     SMB_STRUCT_DIR *);
 197 }
 198
 199 static int
 200 onefs_shadow_copy_mkdir(vfs_handle_struct *handle, const char *path,
 201                         mode_t mode)
 202 {
 203         SHADOW_NEXT(MKDIR,
 204                     (handle, cpath ?: path, mode),
 205                     int);
 206 }
 207
 208 static int
 209 onefs_shadow_copy_rmdir(vfs_handle_struct *handle, const char *path)
 210 {
 211         SHADOW_NEXT(RMDIR,
 212                     (handle, cpath ?: path),
 213                     int);
 214 }
 215
 216 static int
 217 onefs_shadow_copy_open(vfs_handle_struct *handle,
 218                        struct smb_filename *smb_fname, files_struct *fsp,
 219                        int flags, mode_t mode)
 220 {
 221         SHADOW_NEXT_SMB_FNAME(OPEN,
 222                               (handle, smb_fname, fsp, flags, mode),
 223                               int);
 224 }
 225
 226 static NTSTATUS
 227 onefs_shadow_copy_create_file(vfs_handle_struct *handle,
 228                               struct smb_request *req,
 229                               uint16_t root_dir_fid,
 230                               struct smb_filename *smb_fname,
 231                               uint32_t access_mask,
 232                               uint32_t share_access,
 233                               uint32_t create_disposition,
 234                               uint32_t create_options,
 235                               uint32_t file_attributes,
 236                               uint32_t oplock_request,
 237                               uint64_t allocation_size,
 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, sd, ea_list, result, pinfo),
 249                               NTSTATUS);
 250 }
 251
 252 /**
 253  * XXX: macro-ize
 254  */
 255 static int
 256 onefs_shadow_copy_rename(vfs_handle_struct *handle,
 257                          const struct smb_filename *smb_fname_src,
 258                          const struct smb_filename *smb_fname_dst)
 259 {
 260         char *old_cpath = NULL;
 261         char *old_snap_component = NULL;
 262         char *new_cpath = NULL;
 263         char *new_snap_component = NULL;
 264         struct smb_filename *smb_fname_src_tmp = NULL;
 265         struct smb_filename *smb_fname_dst_tmp = NULL;
 266         NTSTATUS status;
 267         int ret = -1;
 268
 269         status = copy_smb_filename(talloc_tos(), smb_fname_src,
 270                                    &smb_fname_src_tmp);
 271         if (!NT_STATUS_IS_OK(status)) {
 272                 errno = map_errno_from_nt_status(status);
 273                 goto out;
 274         }
 275         status = copy_smb_filename(talloc_tos(), smb_fname_dst,
 276                                    &smb_fname_dst_tmp);
 277         if (!NT_STATUS_IS_OK(status)) {
 278                 errno = map_errno_from_nt_status(status);
 279                 goto out;
 280         }
 281
 282         if (shadow_copy_match_name(smb_fname_src_tmp->base_name,
 283                                    &old_snap_component)) {
 284                 old_cpath = osc_canonicalize_path(smb_fname_src_tmp->base_name,
 285                                           old_snap_component);
 286                 smb_fname_src_tmp->base_name = old_cpath;
 287         }
 288
 289         if (shadow_copy_match_name(smb_fname_dst_tmp->base_name,
 290                                    &new_snap_component)) {
 291                 new_cpath = osc_canonicalize_path(smb_fname_dst_tmp->base_name,
 292                                           new_snap_component);
 293                 smb_fname_dst_tmp->base_name = new_cpath;
 294         }
 295
 296         ret = SMB_VFS_NEXT_RENAME(handle, smb_fname_src_tmp,
 297                                   smb_fname_dst_tmp);
 298
 299  out:
 300         SAFE_FREE(old_cpath);
 301         SAFE_FREE(new_cpath);
 302         TALLOC_FREE(smb_fname_src_tmp);
 303         TALLOC_FREE(smb_fname_dst_tmp);
 304
 305         return ret;
 306 }
 307
 308 static int
 309 onefs_shadow_copy_stat(vfs_handle_struct *handle,
 310                        struct smb_filename *smb_fname)
 311 {
 312         SHADOW_NEXT_SMB_FNAME(STAT,
 313                               (handle, smb_fname),
 314                               int);
 315 }
 316
 317 static int
 318 onefs_shadow_copy_lstat(vfs_handle_struct *handle,
 319                         struct smb_filename *smb_fname)
 320 {
 321         SHADOW_NEXT_SMB_FNAME(LSTAT,
 322                               (handle, smb_fname),
 323                               int);
 324 }
 325
 326 static int
 327 onefs_shadow_copy_unlink(vfs_handle_struct *handle, const char *path)
 328 {
 329         SHADOW_NEXT(UNLINK,
 330                     (handle, cpath ?: path),
 331                     int);
 332 }
 333
 334 static int
 335 onefs_shadow_copy_chmod(vfs_handle_struct *handle, const char *path,
 336                         mode_t mode)
 337 {
 338         SHADOW_NEXT(CHMOD,
 339                     (handle, cpath ?: path, mode),
 340                     int);
 341 }
 342
 343 static int
 344 onefs_shadow_copy_chown(vfs_handle_struct *handle, const char *path,
 345                         uid_t uid, gid_t gid)
 346 {
 347         SHADOW_NEXT(CHOWN,
 348                     (handle, cpath ?: path, uid, gid),
 349                     int);
 350 }
 351
 352 static int
 353 onefs_shadow_copy_lchown(vfs_handle_struct *handle, const char *path,
 354                          uid_t uid, gid_t gid)
 355 {
 356         SHADOW_NEXT(LCHOWN,
 357                     (handle, cpath ?: path, uid, gid),
 358                     int);
 359 }
 360
 361 static int
 362 onefs_shadow_copy_chdir(vfs_handle_struct *handle, const char *path)
 363 {
 364         SHADOW_NEXT(CHDIR,
 365                     (handle, cpath ?: path),
 366                     int);
 367 }
 368
 369 static int
 370 onefs_shadow_copy_ntimes(vfs_handle_struct *handle, const char *path,
 371                         struct smb_file_time *ft)
 372 {
 373         SHADOW_NEXT(NTIMES,
 374                     (handle, cpath ?: path, ft),
 375                     int);
 376
 377 }
 378
 379 /**
 380  * XXX: macro-ize
 381  */
 382 static bool
 383 onefs_shadow_copy_symlink(vfs_handle_struct *handle,
 384     const char *oldpath, const char *newpath)
 385 {
 386         char *old_cpath = NULL;
 387         char *old_snap_component = NULL;
 388         char *new_cpath = NULL;
 389         char *new_snap_component = NULL;
 390         bool ret;
 391
 392         if (shadow_copy_match_name(oldpath, &old_snap_component))
 393                 old_cpath = osc_canonicalize_path(oldpath, old_snap_component);
 394
 395         if (shadow_copy_match_name(newpath, &new_snap_component))
 396                 new_cpath = osc_canonicalize_path(newpath, new_snap_component);
 397
 398         ret = SMB_VFS_NEXT_SYMLINK(handle, old_cpath ?: oldpath,
 399             new_cpath ?: newpath);
 400
 401         SAFE_FREE(old_cpath);
 402         SAFE_FREE(new_cpath);
 403
 404         return ret;
 405 }
 406
 407 static bool
 408 onefs_shadow_copy_readlink(vfs_handle_struct *handle, const char *path,
 409                            char *buf, size_t bufsiz)
 410 {
 411         SHADOW_NEXT(READLINK,
 412                     (handle, cpath ?: path, buf, bufsiz),
 413                     bool);
 414 }
 415
 416 /**
 417  * XXX: macro-ize
 418  */
 419 static int
 420 onefs_shadow_copy_link(vfs_handle_struct *handle, const char *oldpath,
 421                        const char *newpath)
 422 {
 423         char *old_cpath = NULL;
 424         char *old_snap_component = NULL;
 425         char *new_cpath = NULL;
 426         char *new_snap_component = NULL;
 427         int ret;
 428
 429         if (shadow_copy_match_name(oldpath, &old_snap_component))
 430                 old_cpath = osc_canonicalize_path(oldpath, old_snap_component);
 431
 432         if (shadow_copy_match_name(newpath, &new_snap_component))
 433                 new_cpath = osc_canonicalize_path(newpath, new_snap_component);
 434
 435         ret = SMB_VFS_NEXT_LINK(handle, old_cpath ?: oldpath,
 436             new_cpath ?: newpath);
 437
 438         SAFE_FREE(old_cpath);
 439         SAFE_FREE(new_cpath);
 440
 441         return ret;
 442 }
 443
 444 static int
 445 onefs_shadow_copy_mknod(vfs_handle_struct *handle, const char *path,
 446                         mode_t mode, SMB_DEV_T dev)
 447 {
 448         SHADOW_NEXT(MKNOD,
 449                     (handle, cpath ?: path, mode, dev),
 450                     int);
 451 }
 452
 453 static char *
 454 onefs_shadow_copy_realpath(vfs_handle_struct *handle, const char *path,
 455                            char *resolved_path)
 456 {
 457         SHADOW_NEXT(REALPATH,
 458                     (handle, cpath ?: path, resolved_path),
 459                     char *);
 460 }
 461
 462 static int onefs_shadow_copy_chflags(struct vfs_handle_struct *handle,
 463                                      const char *path, unsigned int flags)
 464 {
 465         SHADOW_NEXT(CHFLAGS,
 466                     (handle, cpath ?: path, flags),
 467                     int);
 468 }
 469
 470 static NTSTATUS
 471 onefs_shadow_copy_streaminfo(struct vfs_handle_struct *handle,
 472                              struct files_struct *fsp,
 473                              const char *path,
 474                              TALLOC_CTX *mem_ctx,
 475                              unsigned int *num_streams,
 476                              struct stream_struct **streams)
 477 {
 478         SHADOW_NEXT(STREAMINFO,
 479                     (handle, fsp, cpath ?: path, mem_ctx, num_streams,
 480                         streams),
 481                     NTSTATUS);
 482 }
 483
 484 static int
 485 onefs_shadow_copy_get_real_filename(struct vfs_handle_struct *handle,
 486                                     const char *full_path,
 487                                     const char *path,
 488                                     TALLOC_CTX *mem_ctx,
 489                                     char **found_name)
 490 {
 491         SHADOW_NEXT(GET_REAL_FILENAME,
 492                     (handle, full_path, cpath ?: path, mem_ctx, found_name),
 493                     int);
 494 }
 495
 496 static NTSTATUS
 497 onefs_shadow_copy_get_nt_acl(struct vfs_handle_struct *handle,
 498                             const char *path, uint32 security_info,
 499                             struct security_descriptor **ppdesc)
 500 {
 501         SHADOW_NEXT(GET_NT_ACL,
 502                     (handle, cpath ?: path, security_info, ppdesc),
 503                     NTSTATUS);
 504 }
 505
 506 static int
 507 onefs_shadow_copy_chmod_acl(vfs_handle_struct *handle, const char *path,
 508                             mode_t mode)
 509 {
 510         SHADOW_NEXT(CHMOD_ACL,
 511                     (handle, cpath ?: path, mode),
 512                     int);
 513 }
 514
 515 static SMB_ACL_T
 516 onefs_shadow_copy_sys_acl_get_file(vfs_handle_struct *handle,
 517                                    const char *path, SMB_ACL_TYPE_T type)
 518 {
 519         SHADOW_NEXT(SYS_ACL_GET_FILE,
 520                     (handle, cpath ?: path, type),
 521                     SMB_ACL_T);
 522 }
 523
 524 static int
 525 onefs_shadow_copy_sys_acl_set_file(vfs_handle_struct *handle, const char *path,
 526                                    SMB_ACL_TYPE_T type, SMB_ACL_T theacl)
 527 {
 528         SHADOW_NEXT(SYS_ACL_SET_FILE,
 529                     (handle, cpath ?: path, type, theacl),
 530                     int);
 531 }
 532
 533 static int
 534 onefs_shadow_copy_sys_acl_delete_def_file(vfs_handle_struct *handle,
 535                                           const char *path)
 536 {
 537         SHADOW_NEXT(SYS_ACL_DELETE_DEF_FILE,
 538                     (handle, cpath ?: path),
 539                     int);
 540 }
 541
 542 static ssize_t
 543 onefs_shadow_copy_getxattr(vfs_handle_struct *handle, const char *path,
 544                            const char *name, void *value, size_t size)
 545 {
 546         SHADOW_NEXT(GETXATTR,
 547                     (handle, cpath ?: path, name, value, size),
 548                     ssize_t);
 549 }
 550
 551 static ssize_t
 552 onefs_shadow_copy_lgetxattr(vfs_handle_struct *handle, const char *path,
 553                             const char *name, void *value, size_t size)
 554 {
 555         SHADOW_NEXT(LGETXATTR,
 556                     (handle, cpath ?: path, name, value, size),
 557                     ssize_t);
 558 }
 559
 560 static ssize_t
 561 onefs_shadow_copy_listxattr(vfs_handle_struct *handle, const char *path,
 562                             char *list, size_t size)
 563 {
 564         SHADOW_NEXT(LISTXATTR,
 565                     (handle, cpath ?: path, list, size),
 566                     ssize_t);
 567 }
 568
 569 static ssize_t
 570 onefs_shadow_copy_llistxattr(vfs_handle_struct *handle, const char *path,
 571                              char *list, size_t size)
 572 {
 573         SHADOW_NEXT(LLISTXATTR,
 574                     (handle, cpath ?: path, list, size),
 575                     ssize_t);
 576 }
 577
 578 static int
 579 onefs_shadow_copy_removexattr(vfs_handle_struct *handle, const char *path,
 580                               const char *name)
 581 {
 582         SHADOW_NEXT(REMOVEXATTR,
 583                     (handle, cpath ?: path, name),
 584                     int);
 585 }
 586
 587 static int
 588 onefs_shadow_copy_lremovexattr(vfs_handle_struct *handle, const char *path,
 589                                const char *name)
 590 {
 591         SHADOW_NEXT(LREMOVEXATTR,
 592                     (handle, cpath ?: path, name),
 593                     int);
 594 }
 595
 596 static int
 597 onefs_shadow_copy_setxattr(vfs_handle_struct *handle, const char *path,
 598                            const char *name, const void *value, size_t size,
 599                            int flags)
 600 {
 601         SHADOW_NEXT(SETXATTR,
 602                     (handle, cpath ?: path, name, value, size, flags),
 603                     int);
 604 }
 605
 606 static int
 607 onefs_shadow_copy_lsetxattr(vfs_handle_struct *handle, const char *path,
 608                             const char *name, const void *value, size_t size,
 609                             int flags)
 610 {
 611         SHADOW_NEXT(LSETXATTR,
 612                     (handle, cpath ?: path, name, value, size, flags),
 613                     int);
 614 }
 615
 616 static bool
 617 onefs_shadow_copy_is_offline(struct vfs_handle_struct *handle,
 618                              const char *path, SMB_STRUCT_STAT *sbuf)
 619 {
 620         SHADOW_NEXT(IS_OFFLINE,
 621                     (handle, cpath ?: path, sbuf),
 622                     bool);
 623 }
 624
 625 static int
 626 onefs_shadow_copy_set_offline(struct vfs_handle_struct *handle,
 627                               const char *path)
 628 {
 629         SHADOW_NEXT(SET_OFFLINE,
 630                     (handle, cpath ?: path),
 631                     int);
 632 }
 633
 634 /* VFS operations structure */
 635
 636 static vfs_op_tuple onefs_shadow_copy_ops[] = {
 637
 638         /* Disk operations */
 639
 640         {SMB_VFS_OP(onefs_shadow_copy_disk_free), SMB_VFS_OP_DISK_FREE,
 641          SMB_VFS_LAYER_TRANSPARENT},
 642         {SMB_VFS_OP(onefs_shadow_copy_get_shadow_copy_data),
 643          SMB_VFS_OP_GET_SHADOW_COPY_DATA, SMB_VFS_LAYER_OPAQUE},
 644         {SMB_VFS_OP(onefs_shadow_copy_statvfs), SMB_VFS_OP_STATVFS,
 645          SMB_VFS_LAYER_TRANSPARENT},
 646
 647         /* Directory operations */
 648
 649         {SMB_VFS_OP(onefs_shadow_copy_opendir), SMB_VFS_OP_OPENDIR,
 650          SMB_VFS_LAYER_TRANSPARENT},
 651         {SMB_VFS_OP(onefs_shadow_copy_mkdir), SMB_VFS_OP_MKDIR,
 652          SMB_VFS_LAYER_TRANSPARENT},
 653         {SMB_VFS_OP(onefs_shadow_copy_rmdir), SMB_VFS_OP_RMDIR,
 654          SMB_VFS_LAYER_TRANSPARENT},
 655
 656         /* File operations */
 657
 658         {SMB_VFS_OP(onefs_shadow_copy_open), SMB_VFS_OP_OPEN,
 659          SMB_VFS_LAYER_TRANSPARENT},
 660         {SMB_VFS_OP(onefs_shadow_copy_create_file), SMB_VFS_OP_CREATE_FILE,
 661          SMB_VFS_LAYER_TRANSPARENT},
 662         {SMB_VFS_OP(onefs_shadow_copy_rename), SMB_VFS_OP_RENAME,
 663          SMB_VFS_LAYER_TRANSPARENT},
 664         {SMB_VFS_OP(onefs_shadow_copy_stat), SMB_VFS_OP_STAT,
 665          SMB_VFS_LAYER_TRANSPARENT},
 666         {SMB_VFS_OP(onefs_shadow_copy_stat), SMB_VFS_OP_STAT,
 667          SMB_VFS_LAYER_TRANSPARENT},
 668         {SMB_VFS_OP(onefs_shadow_copy_lstat), SMB_VFS_OP_LSTAT,
 669          SMB_VFS_LAYER_TRANSPARENT},
 670         {SMB_VFS_OP(onefs_shadow_copy_unlink), SMB_VFS_OP_UNLINK,
 671          SMB_VFS_LAYER_TRANSPARENT},
 672         {SMB_VFS_OP(onefs_shadow_copy_chmod), SMB_VFS_OP_CHMOD,
 673          SMB_VFS_LAYER_TRANSPARENT},
 674         {SMB_VFS_OP(onefs_shadow_copy_chown), SMB_VFS_OP_CHOWN,
 675          SMB_VFS_LAYER_TRANSPARENT},
 676         {SMB_VFS_OP(onefs_shadow_copy_lchown), SMB_VFS_OP_LCHOWN,
 677          SMB_VFS_LAYER_TRANSPARENT},
 678         {SMB_VFS_OP(onefs_shadow_copy_chdir), SMB_VFS_OP_CHDIR,
 679          SMB_VFS_LAYER_TRANSPARENT},
 680         {SMB_VFS_OP(onefs_shadow_copy_ntimes), SMB_VFS_OP_NTIMES,
 681          SMB_VFS_LAYER_TRANSPARENT},
 682         {SMB_VFS_OP(onefs_shadow_copy_symlink), SMB_VFS_OP_SYMLINK,
 683          SMB_VFS_LAYER_TRANSPARENT},
 684         {SMB_VFS_OP(onefs_shadow_copy_readlink), SMB_VFS_OP_READLINK,
 685          SMB_VFS_LAYER_TRANSPARENT},
 686         {SMB_VFS_OP(onefs_shadow_copy_link), SMB_VFS_OP_LINK,
 687          SMB_VFS_LAYER_TRANSPARENT},
 688         {SMB_VFS_OP(onefs_shadow_copy_mknod), SMB_VFS_OP_MKNOD,
 689          SMB_VFS_LAYER_TRANSPARENT},
 690         {SMB_VFS_OP(onefs_shadow_copy_realpath), SMB_VFS_OP_REALPATH,
 691          SMB_VFS_LAYER_TRANSPARENT},
 692         {SMB_VFS_OP(onefs_shadow_copy_chflags), SMB_VFS_OP_CHFLAGS,
 693          SMB_VFS_LAYER_TRANSPARENT},
 694         {SMB_VFS_OP(onefs_shadow_copy_streaminfo), SMB_VFS_OP_STREAMINFO,
 695          SMB_VFS_LAYER_TRANSPARENT},
 696         {SMB_VFS_OP(onefs_shadow_copy_get_real_filename),
 697          SMB_VFS_OP_GET_REAL_FILENAME, SMB_VFS_LAYER_TRANSPARENT},
 698
 699         /* NT File ACL operations */
 700
 701         {SMB_VFS_OP(onefs_shadow_copy_get_nt_acl), SMB_VFS_OP_GET_NT_ACL,
 702          SMB_VFS_LAYER_TRANSPARENT},
 703
 704         /* POSIX ACL operations */
 705
 706         {SMB_VFS_OP(onefs_shadow_copy_chmod_acl), SMB_VFS_OP_CHMOD_ACL,
 707          SMB_VFS_LAYER_TRANSPARENT},
 708         {SMB_VFS_OP(onefs_shadow_copy_sys_acl_get_file),
 709          SMB_VFS_OP_SYS_ACL_GET_FILE, SMB_VFS_LAYER_TRANSPARENT},
 710         {SMB_VFS_OP(onefs_shadow_copy_sys_acl_set_file),
 711          SMB_VFS_OP_SYS_ACL_SET_FILE, SMB_VFS_LAYER_TRANSPARENT},
 712         {SMB_VFS_OP(onefs_shadow_copy_sys_acl_delete_def_file),
 713          SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE, SMB_VFS_LAYER_TRANSPARENT},
 714
 715         /* EA operations. */
 716
 717         {SMB_VFS_OP(onefs_shadow_copy_getxattr), SMB_VFS_OP_GETXATTR,
 718          SMB_VFS_LAYER_TRANSPARENT},
 719         {SMB_VFS_OP(onefs_shadow_copy_lgetxattr), SMB_VFS_OP_LGETXATTR,
 720          SMB_VFS_LAYER_TRANSPARENT},
 721         {SMB_VFS_OP(onefs_shadow_copy_listxattr), SMB_VFS_OP_LISTXATTR,
 722          SMB_VFS_LAYER_TRANSPARENT},
 723         {SMB_VFS_OP(onefs_shadow_copy_llistxattr), SMB_VFS_OP_LLISTXATTR,
 724          SMB_VFS_LAYER_TRANSPARENT},
 725         {SMB_VFS_OP(onefs_shadow_copy_removexattr), SMB_VFS_OP_REMOVEXATTR,
 726          SMB_VFS_LAYER_TRANSPARENT},
 727         {SMB_VFS_OP(onefs_shadow_copy_lremovexattr), SMB_VFS_OP_LREMOVEXATTR,
 728          SMB_VFS_LAYER_TRANSPARENT},
 729         {SMB_VFS_OP(onefs_shadow_copy_setxattr), SMB_VFS_OP_SETXATTR,
 730          SMB_VFS_LAYER_TRANSPARENT},
 731         {SMB_VFS_OP(onefs_shadow_copy_lsetxattr), SMB_VFS_OP_LSETXATTR,
 732          SMB_VFS_LAYER_TRANSPARENT},
 733
 734         /* offline operations */
 735         {SMB_VFS_OP(onefs_shadow_copy_is_offline), SMB_VFS_OP_IS_OFFLINE,
 736          SMB_VFS_LAYER_TRANSPARENT},
 737         {SMB_VFS_OP(onefs_shadow_copy_set_offline), SMB_VFS_OP_SET_OFFLINE,
 738          SMB_VFS_LAYER_TRANSPARENT},
 739
 740         {SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
 741 };
 742
 743 NTSTATUS vfs_shadow_copy_init(void)
 744 {
 745         NTSTATUS ret;
 746
 747         ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
 748                                "onefs_shadow_copy",
 749                                onefs_shadow_copy_ops);
 750
 751         if (!NT_STATUS_IS_OK(ret))
 752                 return ret;
 753
 754         vfs_onefs_shadow_copy_debug_level = debug_add_class("onefs_shadow_copy");
 755
 756         if (vfs_onefs_shadow_copy_debug_level == -1) {
 757                 vfs_onefs_shadow_copy_debug_level = DBGC_VFS;
 758                 DEBUG(0, ("Couldn't register custom debugging class!\n"));
 759         } else {
 760                 DEBUG(10, ("Debug class number of 'onefs_shadow_copy': %d\n",
 761                            vfs_onefs_shadow_copy_debug_level));
 762         }
 763
 764         return ret;
 765 }