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, const char *path,
 218                        files_struct *fsp, int flags, mode_t mode)
 219 {
 220         SHADOW_NEXT(OPEN,
 221                     (handle, cpath ?: path, 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                               struct security_descriptor *sd,
 238                               struct ea_list *ea_list,
 239                               files_struct **result,
 240                               int *pinfo)
 241 {
 242         SHADOW_NEXT_SMB_FNAME(CREATE_FILE,
 243                               (handle, req, root_dir_fid, smb_fname,
 244                                   access_mask, share_access,
 245                                   create_disposition, create_options,
 246                                   file_attributes, oplock_request,
 247                                   allocation_size, sd, ea_list, result, pinfo),
 248                               NTSTATUS);
 249 }
 250
 251 /**
 252  * XXX: macro-ize
 253  */
 254 static int
 255 onefs_shadow_copy_rename(vfs_handle_struct *handle, const char *old_name,
 256                          const char *new_name)
 257 {
 258         char *old_cpath = NULL;
 259         char *old_snap_component = NULL;
 260         char *new_cpath = NULL;
 261         char *new_snap_component = NULL;
 262         int ret;
 263
 264         if (shadow_copy_match_name(old_name, &old_snap_component))
 265                 old_cpath = osc_canonicalize_path(old_name, old_snap_component);
 266
 267         if (shadow_copy_match_name(new_name, &new_snap_component))
 268                 new_cpath = osc_canonicalize_path(new_name, new_snap_component);
 269
 270         ret = SMB_VFS_NEXT_RENAME(handle, old_cpath ?: old_name,
 271             new_cpath ?: new_name);
 272
 273         SAFE_FREE(old_cpath);
 274         SAFE_FREE(new_cpath);
 275
 276         return ret;
 277 }
 278
 279 static int
 280 onefs_shadow_copy_stat(vfs_handle_struct *handle, const char *path,
 281                        SMB_STRUCT_STAT *sbuf)
 282 {
 283         SHADOW_NEXT(STAT,
 284                     (handle, cpath ?: path, sbuf),
 285                     int);
 286 }
 287
 288 static int
 289 onefs_shadow_copy_lstat(vfs_handle_struct *handle, const char *path,
 290                         SMB_STRUCT_STAT *sbuf)
 291 {
 292         SHADOW_NEXT(LSTAT,
 293                     (handle, cpath ?: path, sbuf),
 294                     int);
 295 }
 296
 297 static int
 298 onefs_shadow_copy_unlink(vfs_handle_struct *handle, const char *path)
 299 {
 300         SHADOW_NEXT(UNLINK,
 301                     (handle, cpath ?: path),
 302                     int);
 303 }
 304
 305 static int
 306 onefs_shadow_copy_chmod(vfs_handle_struct *handle, const char *path,
 307                         mode_t mode)
 308 {
 309         SHADOW_NEXT(CHMOD,
 310                     (handle, cpath ?: path, mode),
 311                     int);
 312 }
 313
 314 static int
 315 onefs_shadow_copy_chown(vfs_handle_struct *handle, const char *path,
 316                         uid_t uid, gid_t gid)
 317 {
 318         SHADOW_NEXT(CHOWN,
 319                     (handle, cpath ?: path, uid, gid),
 320                     int);
 321 }
 322
 323 static int
 324 onefs_shadow_copy_lchown(vfs_handle_struct *handle, const char *path,
 325                          uid_t uid, gid_t gid)
 326 {
 327         SHADOW_NEXT(LCHOWN,
 328                     (handle, cpath ?: path, uid, gid),
 329                     int);
 330 }
 331
 332 static int
 333 onefs_shadow_copy_chdir(vfs_handle_struct *handle, const char *path)
 334 {
 335         SHADOW_NEXT(CHDIR,
 336                     (handle, cpath ?: path),
 337                     int);
 338 }
 339
 340 static int
 341 onefs_shadow_copy_ntimes(vfs_handle_struct *handle, const char *path,
 342                         struct smb_file_time *ft)
 343 {
 344         SHADOW_NEXT(NTIMES,
 345                     (handle, cpath ?: path, ft),
 346                     int);
 347
 348 }
 349
 350 /**
 351  * XXX: macro-ize
 352  */
 353 static bool
 354 onefs_shadow_copy_symlink(vfs_handle_struct *handle,
 355     const char *oldpath, const char *newpath)
 356 {
 357         char *old_cpath = NULL;
 358         char *old_snap_component = NULL;
 359         char *new_cpath = NULL;
 360         char *new_snap_component = NULL;
 361         bool ret;
 362
 363         if (shadow_copy_match_name(oldpath, &old_snap_component))
 364                 old_cpath = osc_canonicalize_path(oldpath, old_snap_component);
 365
 366         if (shadow_copy_match_name(newpath, &new_snap_component))
 367                 new_cpath = osc_canonicalize_path(newpath, new_snap_component);
 368
 369         ret = SMB_VFS_NEXT_SYMLINK(handle, old_cpath ?: oldpath,
 370             new_cpath ?: newpath);
 371
 372         SAFE_FREE(old_cpath);
 373         SAFE_FREE(new_cpath);
 374
 375         return ret;
 376 }
 377
 378 static bool
 379 onefs_shadow_copy_readlink(vfs_handle_struct *handle, const char *path,
 380                            char *buf, size_t bufsiz)
 381 {
 382         SHADOW_NEXT(READLINK,
 383                     (handle, cpath ?: path, buf, bufsiz),
 384                     bool);
 385 }
 386
 387 /**
 388  * XXX: macro-ize
 389  */
 390 static int
 391 onefs_shadow_copy_link(vfs_handle_struct *handle, const char *oldpath,
 392                        const char *newpath)
 393 {
 394         char *old_cpath = NULL;
 395         char *old_snap_component = NULL;
 396         char *new_cpath = NULL;
 397         char *new_snap_component = NULL;
 398         int ret;
 399
 400         if (shadow_copy_match_name(oldpath, &old_snap_component))
 401                 old_cpath = osc_canonicalize_path(oldpath, old_snap_component);
 402
 403         if (shadow_copy_match_name(newpath, &new_snap_component))
 404                 new_cpath = osc_canonicalize_path(newpath, new_snap_component);
 405
 406         ret = SMB_VFS_NEXT_LINK(handle, old_cpath ?: oldpath,
 407             new_cpath ?: newpath);
 408
 409         SAFE_FREE(old_cpath);
 410         SAFE_FREE(new_cpath);
 411
 412         return ret;
 413 }
 414
 415 static int
 416 onefs_shadow_copy_mknod(vfs_handle_struct *handle, const char *path,
 417                         mode_t mode, SMB_DEV_T dev)
 418 {
 419         SHADOW_NEXT(MKNOD,
 420                     (handle, cpath ?: path, mode, dev),
 421                     int);
 422 }
 423
 424 static char *
 425 onefs_shadow_copy_realpath(vfs_handle_struct *handle, const char *path,
 426                            char *resolved_path)
 427 {
 428         SHADOW_NEXT(REALPATH,
 429                     (handle, cpath ?: path, resolved_path),
 430                     char *);
 431 }
 432
 433 static int onefs_shadow_copy_chflags(struct vfs_handle_struct *handle,
 434                                      const char *path, unsigned int flags)
 435 {
 436         SHADOW_NEXT(CHFLAGS,
 437                     (handle, cpath ?: path, flags),
 438                     int);
 439 }
 440
 441 static NTSTATUS
 442 onefs_shadow_copy_streaminfo(struct vfs_handle_struct *handle,
 443                              struct files_struct *fsp,
 444                              const char *path,
 445                              TALLOC_CTX *mem_ctx,
 446                              unsigned int *num_streams,
 447                              struct stream_struct **streams)
 448 {
 449         SHADOW_NEXT(STREAMINFO,
 450                     (handle, fsp, cpath ?: path, mem_ctx, num_streams,
 451                         streams),
 452                     NTSTATUS);
 453 }
 454
 455 static int
 456 onefs_shadow_copy_get_real_filename(struct vfs_handle_struct *handle,
 457                                     const char *full_path,
 458                                     const char *path,
 459                                     TALLOC_CTX *mem_ctx,
 460                                     char **found_name)
 461 {
 462         SHADOW_NEXT(GET_REAL_FILENAME,
 463                     (handle, full_path, cpath ?: path, mem_ctx, found_name),
 464                     int);
 465 }
 466
 467 static NTSTATUS
 468 onefs_shadow_copy_get_nt_acl(struct vfs_handle_struct *handle,
 469                             const char *path, uint32 security_info,
 470                             struct security_descriptor **ppdesc)
 471 {
 472         SHADOW_NEXT(GET_NT_ACL,
 473                     (handle, cpath ?: path, security_info, ppdesc),
 474                     NTSTATUS);
 475 }
 476
 477 static int
 478 onefs_shadow_copy_chmod_acl(vfs_handle_struct *handle, const char *path,
 479                             mode_t mode)
 480 {
 481         SHADOW_NEXT(CHMOD_ACL,
 482                     (handle, cpath ?: path, mode),
 483                     int);
 484 }
 485
 486 static SMB_ACL_T
 487 onefs_shadow_copy_sys_acl_get_file(vfs_handle_struct *handle,
 488                                    const char *path, SMB_ACL_TYPE_T type)
 489 {
 490         SHADOW_NEXT(SYS_ACL_GET_FILE,
 491                     (handle, cpath ?: path, type),
 492                     SMB_ACL_T);
 493 }
 494
 495 static int
 496 onefs_shadow_copy_sys_acl_set_file(vfs_handle_struct *handle, const char *path,
 497                                    SMB_ACL_TYPE_T type, SMB_ACL_T theacl)
 498 {
 499         SHADOW_NEXT(SYS_ACL_SET_FILE,
 500                     (handle, cpath ?: path, type, theacl),
 501                     int);
 502 }
 503
 504 static int
 505 onefs_shadow_copy_sys_acl_delete_def_file(vfs_handle_struct *handle,
 506                                           const char *path)
 507 {
 508         SHADOW_NEXT(SYS_ACL_DELETE_DEF_FILE,
 509                     (handle, cpath ?: path),
 510                     int);
 511 }
 512
 513 static ssize_t
 514 onefs_shadow_copy_getxattr(vfs_handle_struct *handle, const char *path,
 515                            const char *name, void *value, size_t size)
 516 {
 517         SHADOW_NEXT(GETXATTR,
 518                     (handle, cpath ?: path, name, value, size),
 519                     ssize_t);
 520 }
 521
 522 static ssize_t
 523 onefs_shadow_copy_lgetxattr(vfs_handle_struct *handle, const char *path,
 524                             const char *name, void *value, size_t size)
 525 {
 526         SHADOW_NEXT(LGETXATTR,
 527                     (handle, cpath ?: path, name, value, size),
 528                     ssize_t);
 529 }
 530
 531 static ssize_t
 532 onefs_shadow_copy_listxattr(vfs_handle_struct *handle, const char *path,
 533                             char *list, size_t size)
 534 {
 535         SHADOW_NEXT(LISTXATTR,
 536                     (handle, cpath ?: path, list, size),
 537                     ssize_t);
 538 }
 539
 540 static ssize_t
 541 onefs_shadow_copy_llistxattr(vfs_handle_struct *handle, const char *path,
 542                              char *list, size_t size)
 543 {
 544         SHADOW_NEXT(LLISTXATTR,
 545                     (handle, cpath ?: path, list, size),
 546                     ssize_t);
 547 }
 548
 549 static int
 550 onefs_shadow_copy_removexattr(vfs_handle_struct *handle, const char *path,
 551                               const char *name)
 552 {
 553         SHADOW_NEXT(REMOVEXATTR,
 554                     (handle, cpath ?: path, name),
 555                     int);
 556 }
 557
 558 static int
 559 onefs_shadow_copy_lremovexattr(vfs_handle_struct *handle, const char *path,
 560                                const char *name)
 561 {
 562         SHADOW_NEXT(LREMOVEXATTR,
 563                     (handle, cpath ?: path, name),
 564                     int);
 565 }
 566
 567 static int
 568 onefs_shadow_copy_setxattr(vfs_handle_struct *handle, const char *path,
 569                            const char *name, const void *value, size_t size,
 570                            int flags)
 571 {
 572         SHADOW_NEXT(SETXATTR,
 573                     (handle, cpath ?: path, name, value, size, flags),
 574                     int);
 575 }
 576
 577 static int
 578 onefs_shadow_copy_lsetxattr(vfs_handle_struct *handle, const char *path,
 579                             const char *name, const void *value, size_t size,
 580                             int flags)
 581 {
 582         SHADOW_NEXT(LSETXATTR,
 583                     (handle, cpath ?: path, name, value, size, flags),
 584                     int);
 585 }
 586
 587 static bool
 588 onefs_shadow_copy_is_offline(struct vfs_handle_struct *handle,
 589                              const char *path, SMB_STRUCT_STAT *sbuf)
 590 {
 591         SHADOW_NEXT(IS_OFFLINE,
 592                     (handle, cpath ?: path, sbuf),
 593                     bool);
 594 }
 595
 596 static int
 597 onefs_shadow_copy_set_offline(struct vfs_handle_struct *handle,
 598                               const char *path)
 599 {
 600         SHADOW_NEXT(SET_OFFLINE,
 601                     (handle, cpath ?: path),
 602                     int);
 603 }
 604
 605 /* VFS operations structure */
 606
 607 static vfs_op_tuple onefs_shadow_copy_ops[] = {
 608
 609         /* Disk operations */
 610
 611         {SMB_VFS_OP(onefs_shadow_copy_disk_free), SMB_VFS_OP_DISK_FREE,
 612          SMB_VFS_LAYER_TRANSPARENT},
 613         {SMB_VFS_OP(onefs_shadow_copy_get_shadow_copy_data),
 614          SMB_VFS_OP_GET_SHADOW_COPY_DATA, SMB_VFS_LAYER_OPAQUE},
 615         {SMB_VFS_OP(onefs_shadow_copy_statvfs), SMB_VFS_OP_STATVFS,
 616          SMB_VFS_LAYER_TRANSPARENT},
 617
 618         /* Directory operations */
 619
 620         {SMB_VFS_OP(onefs_shadow_copy_opendir), SMB_VFS_OP_OPENDIR,
 621          SMB_VFS_LAYER_TRANSPARENT},
 622         {SMB_VFS_OP(onefs_shadow_copy_mkdir), SMB_VFS_OP_MKDIR,
 623          SMB_VFS_LAYER_TRANSPARENT},
 624         {SMB_VFS_OP(onefs_shadow_copy_rmdir), SMB_VFS_OP_RMDIR,
 625          SMB_VFS_LAYER_TRANSPARENT},
 626
 627         /* File operations */
 628
 629         {SMB_VFS_OP(onefs_shadow_copy_open), SMB_VFS_OP_OPEN,
 630          SMB_VFS_LAYER_TRANSPARENT},
 631         {SMB_VFS_OP(onefs_shadow_copy_create_file), SMB_VFS_OP_CREATE_FILE,
 632          SMB_VFS_LAYER_TRANSPARENT},
 633         {SMB_VFS_OP(onefs_shadow_copy_rename), SMB_VFS_OP_RENAME,
 634          SMB_VFS_LAYER_TRANSPARENT},
 635         {SMB_VFS_OP(onefs_shadow_copy_stat), SMB_VFS_OP_STAT,
 636          SMB_VFS_LAYER_TRANSPARENT},
 637         {SMB_VFS_OP(onefs_shadow_copy_stat), SMB_VFS_OP_STAT,
 638          SMB_VFS_LAYER_TRANSPARENT},
 639         {SMB_VFS_OP(onefs_shadow_copy_lstat), SMB_VFS_OP_LSTAT,
 640          SMB_VFS_LAYER_TRANSPARENT},
 641         {SMB_VFS_OP(onefs_shadow_copy_unlink), SMB_VFS_OP_UNLINK,
 642          SMB_VFS_LAYER_TRANSPARENT},
 643         {SMB_VFS_OP(onefs_shadow_copy_chmod), SMB_VFS_OP_CHMOD,
 644          SMB_VFS_LAYER_TRANSPARENT},
 645         {SMB_VFS_OP(onefs_shadow_copy_chown), SMB_VFS_OP_CHOWN,
 646          SMB_VFS_LAYER_TRANSPARENT},
 647         {SMB_VFS_OP(onefs_shadow_copy_lchown), SMB_VFS_OP_LCHOWN,
 648          SMB_VFS_LAYER_TRANSPARENT},
 649         {SMB_VFS_OP(onefs_shadow_copy_chdir), SMB_VFS_OP_CHDIR,
 650          SMB_VFS_LAYER_TRANSPARENT},
 651         {SMB_VFS_OP(onefs_shadow_copy_ntimes), SMB_VFS_OP_NTIMES,
 652          SMB_VFS_LAYER_TRANSPARENT},
 653         {SMB_VFS_OP(onefs_shadow_copy_symlink), SMB_VFS_OP_SYMLINK,
 654          SMB_VFS_LAYER_TRANSPARENT},
 655         {SMB_VFS_OP(onefs_shadow_copy_readlink), SMB_VFS_OP_READLINK,
 656          SMB_VFS_LAYER_TRANSPARENT},
 657         {SMB_VFS_OP(onefs_shadow_copy_link), SMB_VFS_OP_LINK,
 658          SMB_VFS_LAYER_TRANSPARENT},
 659         {SMB_VFS_OP(onefs_shadow_copy_mknod), SMB_VFS_OP_MKNOD,
 660          SMB_VFS_LAYER_TRANSPARENT},
 661         {SMB_VFS_OP(onefs_shadow_copy_realpath), SMB_VFS_OP_REALPATH,
 662          SMB_VFS_LAYER_TRANSPARENT},
 663         {SMB_VFS_OP(onefs_shadow_copy_chflags), SMB_VFS_OP_CHFLAGS,
 664          SMB_VFS_LAYER_TRANSPARENT},
 665         {SMB_VFS_OP(onefs_shadow_copy_streaminfo), SMB_VFS_OP_STREAMINFO,
 666          SMB_VFS_LAYER_TRANSPARENT},
 667         {SMB_VFS_OP(onefs_shadow_copy_get_real_filename),
 668          SMB_VFS_OP_GET_REAL_FILENAME, SMB_VFS_LAYER_TRANSPARENT},
 669
 670         /* NT File ACL operations */
 671
 672         {SMB_VFS_OP(onefs_shadow_copy_get_nt_acl), SMB_VFS_OP_GET_NT_ACL,
 673          SMB_VFS_LAYER_TRANSPARENT},
 674
 675         /* POSIX ACL operations */
 676
 677         {SMB_VFS_OP(onefs_shadow_copy_chmod_acl), SMB_VFS_OP_CHMOD_ACL,
 678          SMB_VFS_LAYER_TRANSPARENT},
 679         {SMB_VFS_OP(onefs_shadow_copy_sys_acl_get_file),
 680          SMB_VFS_OP_SYS_ACL_GET_FILE, SMB_VFS_LAYER_TRANSPARENT},
 681         {SMB_VFS_OP(onefs_shadow_copy_sys_acl_set_file),
 682          SMB_VFS_OP_SYS_ACL_SET_FILE, SMB_VFS_LAYER_TRANSPARENT},
 683         {SMB_VFS_OP(onefs_shadow_copy_sys_acl_delete_def_file),
 684          SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE, SMB_VFS_LAYER_TRANSPARENT},
 685
 686         /* EA operations. */
 687
 688         {SMB_VFS_OP(onefs_shadow_copy_getxattr), SMB_VFS_OP_GETXATTR,
 689          SMB_VFS_LAYER_TRANSPARENT},
 690         {SMB_VFS_OP(onefs_shadow_copy_lgetxattr), SMB_VFS_OP_LGETXATTR,
 691          SMB_VFS_LAYER_TRANSPARENT},
 692         {SMB_VFS_OP(onefs_shadow_copy_listxattr), SMB_VFS_OP_LISTXATTR,
 693          SMB_VFS_LAYER_TRANSPARENT},
 694         {SMB_VFS_OP(onefs_shadow_copy_llistxattr), SMB_VFS_OP_LLISTXATTR,
 695          SMB_VFS_LAYER_TRANSPARENT},
 696         {SMB_VFS_OP(onefs_shadow_copy_removexattr), SMB_VFS_OP_REMOVEXATTR,
 697          SMB_VFS_LAYER_TRANSPARENT},
 698         {SMB_VFS_OP(onefs_shadow_copy_lremovexattr), SMB_VFS_OP_LREMOVEXATTR,
 699          SMB_VFS_LAYER_TRANSPARENT},
 700         {SMB_VFS_OP(onefs_shadow_copy_setxattr), SMB_VFS_OP_SETXATTR,
 701          SMB_VFS_LAYER_TRANSPARENT},
 702         {SMB_VFS_OP(onefs_shadow_copy_lsetxattr), SMB_VFS_OP_LSETXATTR,
 703          SMB_VFS_LAYER_TRANSPARENT},
 704
 705         /* offline operations */
 706         {SMB_VFS_OP(onefs_shadow_copy_is_offline), SMB_VFS_OP_IS_OFFLINE,
 707          SMB_VFS_LAYER_TRANSPARENT},
 708         {SMB_VFS_OP(onefs_shadow_copy_set_offline), SMB_VFS_OP_SET_OFFLINE,
 709          SMB_VFS_LAYER_TRANSPARENT},
 710
 711         {SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
 712 };
 713
 714 NTSTATUS vfs_shadow_copy_init(void)
 715 {
 716         NTSTATUS ret;
 717
 718         ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
 719                                "onefs_shadow_copy",
 720                                onefs_shadow_copy_ops);
 721
 722         if (!NT_STATUS_IS_OK(ret))
 723                 return ret;
 724
 725         vfs_onefs_shadow_copy_debug_level = debug_add_class("onefs_shadow_copy");
 726
 727         if (vfs_onefs_shadow_copy_debug_level == -1) {
 728                 vfs_onefs_shadow_copy_debug_level = DBGC_VFS;
 729                 DEBUG(0, ("Couldn't register custom debugging class!\n"));
 730         } else {
 731                 DEBUG(10, ("Debug class number of 'onefs_shadow_copy': %d\n",
 732                            vfs_onefs_shadow_copy_debug_level));
 733         }
 734
 735         return ret;
 736 }