examples/VFS/skel_opaque.c

   1 /*
   2  * Skeleton VFS module.  Implements dummy versions of all VFS
   3  * functions.
   4  *
   5  * Copyright (C) Tim Potter, 1999-2000
   6  * Copyright (C) Alexander Bokovoy, 2002
   7  * Copyright (C) Stefan (metze) Metzmacher, 2003
   8  * Copyright (C) Jeremy Allison 2009
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 3 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  22  */
  23
  24 #include "../source3/include/includes.h"
  25 #include "lib/util/tevent_unix.h"
  26 #include "lib/util/tevent_ntstatus.h"
  27
  28 /* PLEASE,PLEASE READ THE VFS MODULES CHAPTER OF THE
  29    SAMBA DEVELOPERS GUIDE!!!!!!
  30  */
  31
  32 /* If you take this file as template for your module
  33  * you must re-implement every function.
  34  */
  35
  36 static int skel_connect(vfs_handle_struct *handle, const char *service,
  37                         const char *user)
  38 {
  39         errno = ENOSYS;
  40         return -1;
  41 }
  42
  43 static void skel_disconnect(vfs_handle_struct *handle)
  44 {
  45         ;
  46 }
  47
  48 static uint64_t skel_disk_free(vfs_handle_struct *handle,
  49                                 const struct smb_filename *smb_fname,
  50                                 uint64_t *bsize,
  51                                 uint64_t *dfree,
  52                                 uint64_t *dsize)
  53 {
  54         *bsize = 0;
  55         *dfree = 0;
  56         *dsize = 0;
  57         return 0;
  58 }
  59
  60 static int skel_get_quota(vfs_handle_struct *handle,
  61                                 const struct smb_filename *smb_fname,
  62                                 enum SMB_QUOTA_TYPE qtype,
  63                                 unid_t id,
  64                                 SMB_DISK_QUOTA *dq)
  65 {
  66         errno = ENOSYS;
  67         return -1;
  68 }
  69
  70 static int skel_set_quota(vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype,
  71                           unid_t id, SMB_DISK_QUOTA *dq)
  72 {
  73         errno = ENOSYS;
  74         return -1;
  75 }
  76
  77 static int skel_get_shadow_copy_data(vfs_handle_struct *handle,
  78                                      files_struct *fsp,
  79                                      struct shadow_copy_data *shadow_copy_data,
  80                                      bool labels)
  81 {
  82         errno = ENOSYS;
  83         return -1;
  84 }
  85
  86 static int skel_statvfs(struct vfs_handle_struct *handle,
  87                                 const struct smb_filename *smb_fname,
  88                                 struct vfs_statvfs_struct *statbuf)
  89 {
  90         errno = ENOSYS;
  91         return -1;
  92 }
  93
  94 static uint32_t skel_fs_capabilities(struct vfs_handle_struct *handle,
  95                                      enum timestamp_set_resolution *p_ts_res)
  96 {
  97         return 0;
  98 }
  99
 100 static NTSTATUS skel_get_dfs_referrals(struct vfs_handle_struct *handle,
 101                                        struct dfs_GetDFSReferral *r)
 102 {
 103         return NT_STATUS_NOT_IMPLEMENTED;
 104 }
 105
 106 static DIR *skel_opendir(vfs_handle_struct *handle,
 107                         const struct smb_filename *smb_fname,
 108                         const char *mask,
 109                         uint32_t attr)
 110 {
 111         return NULL;
 112 }
 113
 114 static NTSTATUS skel_snap_check_path(struct vfs_handle_struct *handle,
 115                                      TALLOC_CTX *mem_ctx,
 116                                      const char *service_path,
 117                                      char **base_volume)
 118 {
 119         return NT_STATUS_NOT_SUPPORTED;
 120 }
 121
 122 static NTSTATUS skel_snap_create(struct vfs_handle_struct *handle,
 123                                  TALLOC_CTX *mem_ctx,
 124                                  const char *base_volume,
 125                                  time_t *tstamp,
 126                                  bool rw,
 127                                  char **base_path,
 128                                  char **snap_path)
 129 {
 130         return NT_STATUS_NOT_SUPPORTED;
 131 }
 132
 133 static NTSTATUS skel_snap_delete(struct vfs_handle_struct *handle,
 134                                  TALLOC_CTX *mem_ctx,
 135                                  char *base_path,
 136                                  char *snap_path)
 137 {
 138         return NT_STATUS_NOT_SUPPORTED;
 139 }
 140
 141 static DIR *skel_fdopendir(vfs_handle_struct *handle, files_struct *fsp,
 142                            const char *mask, uint32_t attr)
 143 {
 144         return NULL;
 145 }
 146
 147 static struct dirent *skel_readdir(vfs_handle_struct *handle,
 148                                    DIR *dirp, SMB_STRUCT_STAT *sbuf)
 149 {
 150         return NULL;
 151 }
 152
 153 static void skel_seekdir(vfs_handle_struct *handle, DIR *dirp, long offset)
 154 {
 155         ;
 156 }
 157
 158 static long skel_telldir(vfs_handle_struct *handle, DIR *dirp)
 159 {
 160         return (long)-1;
 161 }
 162
 163 static void skel_rewind_dir(vfs_handle_struct *handle, DIR *dirp)
 164 {
 165         ;
 166 }
 167
 168 static int skel_mkdir(vfs_handle_struct *handle,
 169                 const struct smb_filename *smb_fname,
 170                 mode_t mode)
 171 {
 172         errno = ENOSYS;
 173         return -1;
 174 }
 175
 176 static int skel_rmdir(vfs_handle_struct *handle,
 177                 const struct smb_filename *smb_fname)
 178 {
 179         errno = ENOSYS;
 180         return -1;
 181 }
 182
 183 static int skel_closedir(vfs_handle_struct *handle, DIR *dir)
 184 {
 185         errno = ENOSYS;
 186         return -1;
 187 }
 188
 189 static int skel_open(vfs_handle_struct *handle, struct smb_filename *smb_fname,
 190                      files_struct *fsp, int flags, mode_t mode)
 191 {
 192         errno = ENOSYS;
 193         return -1;
 194 }
 195
 196 static NTSTATUS skel_create_file(struct vfs_handle_struct *handle,
 197                                  struct smb_request *req,
 198                                  uint16_t root_dir_fid,
 199                                  struct smb_filename *smb_fname,
 200                                  uint32_t access_mask,
 201                                  uint32_t share_access,
 202                                  uint32_t create_disposition,
 203                                  uint32_t create_options,
 204                                  uint32_t file_attributes,
 205                                  uint32_t oplock_request,
 206                                  const struct smb2_lease *lease,
 207                                  uint64_t allocation_size,
 208                                  uint32_t private_flags,
 209                                  struct security_descriptor *sd,
 210                                  struct ea_list *ea_list,
 211                                  files_struct **result, int *pinfo,
 212                                  const struct smb2_create_blobs *in_context_blobs,
 213                                  struct smb2_create_blobs *out_context_blobs)
 214 {
 215         return NT_STATUS_NOT_IMPLEMENTED;
 216 }
 217
 218 static int skel_close_fn(vfs_handle_struct *handle, files_struct *fsp)
 219 {
 220         errno = ENOSYS;
 221         return -1;
 222 }
 223
 224 static ssize_t skel_pread(vfs_handle_struct *handle, files_struct *fsp,
 225                           void *data, size_t n, off_t offset)
 226 {
 227         errno = ENOSYS;
 228         return -1;
 229 }
 230
 231 static struct tevent_req *skel_pread_send(struct vfs_handle_struct *handle,
 232                                           TALLOC_CTX *mem_ctx,
 233                                           struct tevent_context *ev,
 234                                           struct files_struct *fsp,
 235                                           void *data, size_t n, off_t offset)
 236 {
 237         return NULL;
 238 }
 239
 240 static ssize_t skel_pread_recv(struct tevent_req *req,
 241                                struct vfs_aio_state *vfs_aio_state)
 242 {
 243         vfs_aio_state->error = ENOSYS;
 244         return -1;
 245 }
 246
 247 static ssize_t skel_pwrite(vfs_handle_struct *handle, files_struct *fsp,
 248                            const void *data, size_t n, off_t offset)
 249 {
 250         errno = ENOSYS;
 251         return -1;
 252 }
 253
 254 static struct tevent_req *skel_pwrite_send(struct vfs_handle_struct *handle,
 255                                            TALLOC_CTX *mem_ctx,
 256                                            struct tevent_context *ev,
 257                                            struct files_struct *fsp,
 258                                            const void *data,
 259                                            size_t n, off_t offset)
 260 {
 261         return NULL;
 262 }
 263
 264 static ssize_t skel_pwrite_recv(struct tevent_req *req,
 265                                 struct vfs_aio_state *vfs_aio_state)
 266 {
 267         vfs_aio_state->error = ENOSYS;
 268         return -1;
 269 }
 270
 271 static off_t skel_lseek(vfs_handle_struct *handle, files_struct *fsp,
 272                         off_t offset, int whence)
 273 {
 274         errno = ENOSYS;
 275         return (off_t) - 1;
 276 }
 277
 278 static ssize_t skel_sendfile(vfs_handle_struct *handle, int tofd,
 279                              files_struct *fromfsp, const DATA_BLOB *hdr,
 280                              off_t offset, size_t n)
 281 {
 282         errno = ENOSYS;
 283         return -1;
 284 }
 285
 286 static ssize_t skel_recvfile(vfs_handle_struct *handle, int fromfd,
 287                              files_struct *tofsp, off_t offset, size_t n)
 288 {
 289         errno = ENOSYS;
 290         return -1;
 291 }
 292
 293 static int skel_renameat(vfs_handle_struct *handle,
 294                        files_struct *srcfsp,
 295                        const struct smb_filename *smb_fname_src,
 296                        files_struct *dstfsp,
 297                        const struct smb_filename *smb_fname_dst)
 298 {
 299         errno = ENOSYS;
 300         return -1;
 301 }
 302
 303 static struct tevent_req *skel_fsync_send(struct vfs_handle_struct *handle,
 304                                           TALLOC_CTX *mem_ctx,
 305                                           struct tevent_context *ev,
 306                                           struct files_struct *fsp)
 307 {
 308         return NULL;
 309 }
 310
 311 static int skel_fsync_recv(struct tevent_req *req,
 312                            struct vfs_aio_state *vfs_aio_state)
 313 {
 314         vfs_aio_state->error = ENOSYS;
 315         return -1;
 316 }
 317
 318 static int skel_stat(vfs_handle_struct *handle, struct smb_filename *smb_fname)
 319 {
 320         errno = ENOSYS;
 321         return -1;
 322 }
 323
 324 static int skel_fstat(vfs_handle_struct *handle, files_struct *fsp,
 325                       SMB_STRUCT_STAT *sbuf)
 326 {
 327         errno = ENOSYS;
 328         return -1;
 329 }
 330
 331 static int skel_lstat(vfs_handle_struct *handle,
 332                       struct smb_filename *smb_fname)
 333 {
 334         errno = ENOSYS;
 335         return -1;
 336 }
 337
 338 static uint64_t skel_get_alloc_size(struct vfs_handle_struct *handle,
 339                                     struct files_struct *fsp,
 340                                     const SMB_STRUCT_STAT *sbuf)
 341 {
 342         errno = ENOSYS;
 343         return -1;
 344 }
 345
 346 static int skel_unlink(vfs_handle_struct *handle,
 347                        const struct smb_filename *smb_fname)
 348 {
 349         errno = ENOSYS;
 350         return -1;
 351 }
 352
 353 static int skel_chmod(vfs_handle_struct *handle,
 354                         const struct smb_filename *smb_fname,
 355                         mode_t mode)
 356 {
 357         errno = ENOSYS;
 358         return -1;
 359 }
 360
 361 static int skel_fchmod(vfs_handle_struct *handle, files_struct *fsp,
 362                        mode_t mode)
 363 {
 364         errno = ENOSYS;
 365         return -1;
 366 }
 367
 368 static int skel_chown(vfs_handle_struct *handle,
 369                         const struct smb_filename *smb_fname,
 370                         uid_t uid,
 371                         gid_t gid)
 372 {
 373         errno = ENOSYS;
 374         return -1;
 375 }
 376
 377 static int skel_fchown(vfs_handle_struct *handle, files_struct *fsp,
 378                        uid_t uid, gid_t gid)
 379 {
 380         errno = ENOSYS;
 381         return -1;
 382 }
 383
 384 static int skel_lchown(vfs_handle_struct *handle,
 385                         const struct smb_filename *smb_fname,
 386                         uid_t uid,
 387                         gid_t gid)
 388 {
 389         errno = ENOSYS;
 390         return -1;
 391 }
 392
 393 static int skel_chdir(vfs_handle_struct *handle,
 394                         const struct smb_filename *smb_fname)
 395 {
 396         errno = ENOSYS;
 397         return -1;
 398 }
 399
 400 static struct smb_filename *skel_getwd(vfs_handle_struct *handle,
 401                                 TALLOC_CTX *ctx)
 402 {
 403         errno = ENOSYS;
 404         return NULL;
 405 }
 406
 407 static int skel_ntimes(vfs_handle_struct *handle,
 408                        const struct smb_filename *smb_fname,
 409                        struct smb_file_time *ft)
 410 {
 411         errno = ENOSYS;
 412         return -1;
 413 }
 414
 415 static int skel_ftruncate(vfs_handle_struct *handle, files_struct *fsp,
 416                           off_t offset)
 417 {
 418         errno = ENOSYS;
 419         return -1;
 420 }
 421
 422 static int skel_fallocate(vfs_handle_struct *handle, files_struct *fsp,
 423                           uint32_t mode, off_t offset, off_t len)
 424 {
 425         errno = ENOSYS;
 426         return -1;
 427 }
 428
 429 static bool skel_lock(vfs_handle_struct *handle, files_struct *fsp, int op,
 430                       off_t offset, off_t count, int type)
 431 {
 432         errno = ENOSYS;
 433         return false;
 434 }
 435
 436 static int skel_kernel_flock(struct vfs_handle_struct *handle,
 437                              struct files_struct *fsp,
 438                              uint32_t share_mode, uint32_t access_mask)
 439 {
 440         errno = ENOSYS;
 441         return -1;
 442 }
 443
 444 static int skel_linux_setlease(struct vfs_handle_struct *handle,
 445                                struct files_struct *fsp, int leasetype)
 446 {
 447         errno = ENOSYS;
 448         return -1;
 449 }
 450
 451 static bool skel_getlock(vfs_handle_struct *handle, files_struct *fsp,
 452                          off_t *poffset, off_t *pcount, int *ptype,
 453                          pid_t *ppid)
 454 {
 455         errno = ENOSYS;
 456         return false;
 457 }
 458
 459 static int skel_symlink(vfs_handle_struct *handle,
 460                         const char *link_contents,
 461                         const struct smb_filename *new_smb_fname)
 462 {
 463         errno = ENOSYS;
 464         return -1;
 465 }
 466
 467 static int skel_vfs_readlinkat(vfs_handle_struct *handle,
 468                         files_struct *dirfsp,
 469                         const struct smb_filename *smb_fname,
 470                         char *buf,
 471                         size_t bufsiz)
 472 {
 473         errno = ENOSYS;
 474         return -1;
 475 }
 476
 477 static int skel_linkat(vfs_handle_struct *handle,
 478                         files_struct *srcfsp,
 479                         const struct smb_filename *old_smb_fname,
 480                         files_struct *dstfsp,
 481                         const struct smb_filename *new_smb_fname,
 482                         int flags)
 483 {
 484         errno = ENOSYS;
 485         return -1;
 486 }
 487
 488 static int skel_mknodat(vfs_handle_struct *handle,
 489                         files_struct *dirfsp,
 490                         const struct smb_filename *smb_fname,
 491                         mode_t mode,
 492                         SMB_DEV_T dev)
 493 {
 494         errno = ENOSYS;
 495         return -1;
 496 }
 497
 498 static struct smb_filename *skel_realpath(vfs_handle_struct *handle,
 499                         TALLOC_CTX *ctx,
 500                         const struct smb_filename *smb_fname)
 501 {
 502         errno = ENOSYS;
 503         return NULL;
 504 }
 505
 506 static int skel_chflags(vfs_handle_struct *handle,
 507                         const struct smb_filename *smb_fname,
 508                         uint flags)
 509 {
 510         errno = ENOSYS;
 511         return -1;
 512 }
 513
 514 static struct file_id skel_file_id_create(vfs_handle_struct *handle,
 515                                           const SMB_STRUCT_STAT *sbuf)
 516 {
 517         struct file_id id;
 518         ZERO_STRUCT(id);
 519         errno = ENOSYS;
 520         return id;
 521 }
 522
 523 static uint64_t skel_fs_file_id(vfs_handle_struct *handle,
 524                                 const SMB_STRUCT_STAT *sbuf)
 525 {
 526         errno = ENOSYS;
 527         return 0;
 528 }
 529
 530 struct skel_offload_read_state {
 531         bool dummy;
 532 };
 533
 534 static struct tevent_req *skel_offload_read_send(
 535         TALLOC_CTX *mem_ctx,
 536         struct tevent_context *ev,
 537         struct vfs_handle_struct *handle,
 538         struct files_struct *fsp,
 539         uint32_t fsctl,
 540         uint32_t ttl,
 541         off_t offset,
 542         size_t to_copy)
 543 {
 544         struct tevent_req *req = NULL;
 545         struct skel_offload_read_state *state = NULL;
 546
 547         req = tevent_req_create(mem_ctx, &state, struct skel_offload_read_state);
 548         if (req == NULL) {
 549                 return NULL;
 550         }
 551
 552         tevent_req_nterror(req, NT_STATUS_NOT_IMPLEMENTED);
 553         return tevent_req_post(req, ev);
 554 }
 555
 556 static NTSTATUS skel_offload_read_recv(struct tevent_req *req,
 557                                        struct vfs_handle_struct *handle,
 558                                        TALLOC_CTX *mem_ctx,
 559                                        DATA_BLOB *_token_blob)
 560 {
 561         NTSTATUS status;
 562
 563         if (tevent_req_is_nterror(req, &status)) {
 564                 tevent_req_received(req);
 565                 return status;
 566         }
 567         tevent_req_received(req);
 568
 569         return NT_STATUS_OK;
 570 }
 571
 572 struct skel_cc_state {
 573         uint64_t unused;
 574 };
 575 static struct tevent_req *skel_offload_write_send(struct vfs_handle_struct *handle,
 576                                                TALLOC_CTX *mem_ctx,
 577                                                struct tevent_context *ev,
 578                                                uint32_t fsctl,
 579                                                DATA_BLOB *token,
 580                                                off_t transfer_offset,
 581                                                struct files_struct *dest_fsp,
 582                                                off_t dest_off,
 583                                                off_t num)
 584 {
 585         struct tevent_req *req;
 586         struct skel_cc_state *cc_state;
 587
 588         req = tevent_req_create(mem_ctx, &cc_state, struct skel_cc_state);
 589         if (req == NULL) {
 590                 return NULL;
 591         }
 592
 593         tevent_req_nterror(req, NT_STATUS_NOT_IMPLEMENTED);
 594         return tevent_req_post(req, ev);
 595 }
 596
 597 static NTSTATUS skel_offload_write_recv(struct vfs_handle_struct *handle,
 598                                      struct tevent_req *req,
 599                                      off_t *copied)
 600 {
 601         NTSTATUS status;
 602
 603         if (tevent_req_is_nterror(req, &status)) {
 604                 tevent_req_received(req);
 605                 return status;
 606         }
 607         tevent_req_received(req);
 608
 609         return NT_STATUS_OK;
 610 }
 611
 612 static NTSTATUS skel_get_compression(struct vfs_handle_struct *handle,
 613                                      TALLOC_CTX *mem_ctx,
 614                                      struct files_struct *fsp,
 615                                      struct smb_filename *smb_fname,
 616                                      uint16_t *_compression_fmt)
 617 {
 618         return NT_STATUS_INVALID_DEVICE_REQUEST;
 619 }
 620
 621 static NTSTATUS skel_set_compression(struct vfs_handle_struct *handle,
 622                                      TALLOC_CTX *mem_ctx,
 623                                      struct files_struct *fsp,
 624                                      uint16_t compression_fmt)
 625 {
 626         return NT_STATUS_INVALID_DEVICE_REQUEST;
 627 }
 628
 629 static NTSTATUS skel_streaminfo(struct vfs_handle_struct *handle,
 630                                 struct files_struct *fsp,
 631                                 const struct smb_filename *smb_fname,
 632                                 TALLOC_CTX *mem_ctx,
 633                                 unsigned int *num_streams,
 634                                 struct stream_struct **streams)
 635 {
 636         return NT_STATUS_NOT_IMPLEMENTED;
 637 }
 638
 639 static int skel_get_real_filename(struct vfs_handle_struct *handle,
 640                                   const char *path,
 641                                   const char *name,
 642                                   TALLOC_CTX *mem_ctx, char **found_name)
 643 {
 644         errno = ENOSYS;
 645         return -1;
 646 }
 647
 648 static const char *skel_connectpath(struct vfs_handle_struct *handle,
 649                                 const struct smb_filename *smb_fname)
 650 {
 651         errno = ENOSYS;
 652         return NULL;
 653 }
 654
 655 static NTSTATUS skel_brl_lock_windows(struct vfs_handle_struct *handle,
 656                                       struct byte_range_lock *br_lck,
 657                                       struct lock_struct *plock)
 658 {
 659         return NT_STATUS_NOT_IMPLEMENTED;
 660 }
 661
 662 static bool skel_brl_unlock_windows(struct vfs_handle_struct *handle,
 663                                     struct byte_range_lock *br_lck,
 664                                     const struct lock_struct *plock)
 665 {
 666         errno = ENOSYS;
 667         return false;
 668 }
 669
 670 static bool skel_strict_lock_check(struct vfs_handle_struct *handle,
 671                                    struct files_struct *fsp,
 672                                    struct lock_struct *plock)
 673 {
 674         errno = ENOSYS;
 675         return false;
 676 }
 677
 678 static NTSTATUS skel_translate_name(struct vfs_handle_struct *handle,
 679                                     const char *mapped_name,
 680                                     enum vfs_translate_direction direction,
 681                                     TALLOC_CTX *mem_ctx, char **pmapped_name)
 682 {
 683         return NT_STATUS_NOT_IMPLEMENTED;
 684 }
 685
 686 static NTSTATUS skel_fsctl(struct vfs_handle_struct *handle,
 687                            struct files_struct *fsp,
 688                            TALLOC_CTX *ctx,
 689                            uint32_t function,
 690                            uint16_t req_flags,  /* Needed for UNICODE ... */
 691                            const uint8_t *_in_data,
 692                            uint32_t in_len,
 693                            uint8_t **_out_data,
 694                            uint32_t max_out_len, uint32_t *out_len)
 695 {
 696         return NT_STATUS_NOT_IMPLEMENTED;
 697 }
 698
 699 static NTSTATUS skel_readdir_attr(struct vfs_handle_struct *handle,
 700                                   const struct smb_filename *fname,
 701                                   TALLOC_CTX *mem_ctx,
 702                                   struct readdir_attr_data **pattr_data)
 703 {
 704         return NT_STATUS_NOT_IMPLEMENTED;
 705 }
 706
 707 static NTSTATUS skel_get_dos_attributes(struct vfs_handle_struct *handle,
 708                                 struct smb_filename *smb_fname,
 709                                 uint32_t *dosmode)
 710 {
 711         return NT_STATUS_NOT_IMPLEMENTED;
 712 }
 713
 714 struct skel_get_dos_attributes_state {
 715         struct vfs_aio_state aio_state;
 716         uint32_t dosmode;
 717 };
 718
 719 static struct tevent_req *skel_get_dos_attributes_send(
 720                         TALLOC_CTX *mem_ctx,
 721                         struct tevent_context *ev,
 722                         struct vfs_handle_struct *handle,
 723                         files_struct *dir_fsp,
 724                         struct smb_filename *smb_fname)
 725 {
 726         struct tevent_req *req = NULL;
 727         struct skel_get_dos_attributes_state *state = NULL;
 728
 729         req = tevent_req_create(mem_ctx, &state,
 730                                 struct skel_get_dos_attributes_state);
 731         if (req == NULL) {
 732                 return NULL;
 733         }
 734
 735         tevent_req_nterror(req, NT_STATUS_NOT_IMPLEMENTED);
 736         return tevent_req_post(req, ev);
 737 }
 738
 739 static NTSTATUS skel_get_dos_attributes_recv(struct tevent_req *req,
 740                                              struct vfs_aio_state *aio_state,
 741                                              uint32_t *dosmode)
 742 {
 743         struct skel_get_dos_attributes_state *state =
 744                 tevent_req_data(req,
 745                 struct skel_get_dos_attributes_state);
 746         NTSTATUS status;
 747
 748         if (tevent_req_is_nterror(req, &status)) {
 749                 tevent_req_received(req);
 750                 return status;
 751         }
 752
 753         *aio_state = state->aio_state;
 754         *dosmode = state->dosmode;
 755         tevent_req_received(req);
 756         return NT_STATUS_OK;
 757 }
 758
 759 static NTSTATUS skel_fget_dos_attributes(struct vfs_handle_struct *handle,
 760                                 struct files_struct *fsp,
 761                                 uint32_t *dosmode)
 762 {
 763         return NT_STATUS_NOT_IMPLEMENTED;
 764 }
 765
 766 static NTSTATUS skel_set_dos_attributes(struct vfs_handle_struct *handle,
 767                                 const struct smb_filename *smb_fname,
 768                                 uint32_t dosmode)
 769 {
 770         return NT_STATUS_NOT_IMPLEMENTED;
 771 }
 772
 773 static NTSTATUS skel_fset_dos_attributes(struct vfs_handle_struct *handle,
 774                                 struct files_struct *fsp,
 775                                 uint32_t dosmode)
 776 {
 777         return NT_STATUS_NOT_IMPLEMENTED;
 778 }
 779
 780 static NTSTATUS skel_fget_nt_acl(vfs_handle_struct *handle, files_struct *fsp,
 781                                  uint32_t security_info,
 782                                  TALLOC_CTX *mem_ctx,
 783                                  struct security_descriptor **ppdesc)
 784 {
 785         return NT_STATUS_NOT_IMPLEMENTED;
 786 }
 787
 788 static NTSTATUS skel_get_nt_acl(vfs_handle_struct *handle,
 789                                 const struct smb_filename *smb_fname,
 790                                 uint32_t security_info,
 791                                 TALLOC_CTX *mem_ctx,
 792                                 struct security_descriptor **ppdesc)
 793 {
 794         return NT_STATUS_NOT_IMPLEMENTED;
 795 }
 796
 797 static NTSTATUS skel_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp,
 798                                  uint32_t security_info_sent,
 799                                  const struct security_descriptor *psd)
 800 {
 801         return NT_STATUS_NOT_IMPLEMENTED;
 802 }
 803
 804 static SMB_ACL_T skel_sys_acl_get_file(vfs_handle_struct *handle,
 805                                        const struct smb_filename *smb_fname,
 806                                        SMB_ACL_TYPE_T type,
 807                                        TALLOC_CTX *mem_ctx)
 808 {
 809         errno = ENOSYS;
 810         return (SMB_ACL_T) NULL;
 811 }
 812
 813 static SMB_ACL_T skel_sys_acl_get_fd(vfs_handle_struct *handle,
 814                                      files_struct *fsp, TALLOC_CTX *mem_ctx)
 815 {
 816         errno = ENOSYS;
 817         return (SMB_ACL_T) NULL;
 818 }
 819
 820 static int skel_sys_acl_blob_get_file(vfs_handle_struct *handle,
 821                                 const struct smb_filename *smb_fname,
 822                                 TALLOC_CTX *mem_ctx,
 823                                 char **blob_description,
 824                                 DATA_BLOB *blob)
 825 {
 826         errno = ENOSYS;
 827         return -1;
 828 }
 829
 830 static int skel_sys_acl_blob_get_fd(vfs_handle_struct *handle,
 831                                     files_struct *fsp, TALLOC_CTX *mem_ctx,
 832                                     char **blob_description, DATA_BLOB *blob)
 833 {
 834         errno = ENOSYS;
 835         return -1;
 836 }
 837
 838 static int skel_sys_acl_set_file(vfs_handle_struct *handle,
 839                                 const struct smb_filename *smb_fname,
 840                                 SMB_ACL_TYPE_T acltype,
 841                                 SMB_ACL_T theacl)
 842 {
 843         errno = ENOSYS;
 844         return -1;
 845 }
 846
 847 static int skel_sys_acl_set_fd(vfs_handle_struct *handle, files_struct *fsp,
 848                                SMB_ACL_T theacl)
 849 {
 850         errno = ENOSYS;
 851         return -1;
 852 }
 853
 854 static int skel_sys_acl_delete_def_file(vfs_handle_struct *handle,
 855                                         const struct smb_filename *smb_fname)
 856 {
 857         errno = ENOSYS;
 858         return -1;
 859 }
 860
 861 static ssize_t skel_getxattr(vfs_handle_struct *handle,
 862                                 const struct smb_filename *smb_fname,
 863                                 const char *name,
 864                                 void *value,
 865                                 size_t size)
 866 {
 867         errno = ENOSYS;
 868         return -1;
 869 }
 870
 871 struct skel_getxattrat_state {
 872         struct vfs_aio_state aio_state;
 873         ssize_t xattr_size;
 874         uint8_t *xattr_value;
 875 };
 876
 877 static struct tevent_req *skel_getxattrat_send(
 878                         TALLOC_CTX *mem_ctx,
 879                         struct tevent_context *ev,
 880                         struct vfs_handle_struct *handle,
 881                         files_struct *dir_fsp,
 882                         const struct smb_filename *smb_fname,
 883                         const char *xattr_name,
 884                         size_t alloc_hint)
 885 {
 886         struct tevent_req *req = NULL;
 887         struct skel_getxattrat_state *state = NULL;
 888
 889         req = tevent_req_create(mem_ctx, &state,
 890                                 struct skel_getxattrat_state);
 891         if (req == NULL) {
 892                 return NULL;
 893         }
 894
 895         tevent_req_error(req, ENOSYS);
 896         return tevent_req_post(req, ev);
 897 }
 898
 899 static ssize_t skel_getxattrat_recv(struct tevent_req *req,
 900                                     struct vfs_aio_state *aio_state,
 901                                     TALLOC_CTX *mem_ctx,
 902                                     uint8_t **xattr_value)
 903 {
 904         struct skel_getxattrat_state *state = tevent_req_data(
 905                 req, struct skel_getxattrat_state);
 906         ssize_t xattr_size;
 907
 908         if (tevent_req_is_unix_error(req, &aio_state->error)) {
 909                 tevent_req_received(req);
 910                 return -1;
 911         }
 912
 913         *aio_state = state->aio_state;
 914         xattr_size = state->xattr_size;
 915         if (xattr_value != NULL) {
 916                 *xattr_value = talloc_move(mem_ctx, &state->xattr_value);
 917         }
 918
 919         tevent_req_received(req);
 920         return xattr_size;
 921 }
 922
 923 static ssize_t skel_fgetxattr(vfs_handle_struct *handle,
 924                               struct files_struct *fsp, const char *name,
 925                               void *value, size_t size)
 926 {
 927         errno = ENOSYS;
 928         return -1;
 929 }
 930
 931 static ssize_t skel_listxattr(vfs_handle_struct *handle,
 932                                 const struct smb_filename *smb_fname,
 933                                 char *list,
 934                                 size_t size)
 935 {
 936         errno = ENOSYS;
 937         return -1;
 938 }
 939
 940 static ssize_t skel_flistxattr(vfs_handle_struct *handle,
 941                                struct files_struct *fsp, char *list,
 942                                size_t size)
 943 {
 944         errno = ENOSYS;
 945         return -1;
 946 }
 947
 948 static int skel_removexattr(vfs_handle_struct *handle,
 949                         const struct smb_filename *smb_fname,
 950                         const char *name)
 951 {
 952         errno = ENOSYS;
 953         return -1;
 954 }
 955
 956 static int skel_fremovexattr(vfs_handle_struct *handle,
 957                              struct files_struct *fsp, const char *name)
 958 {
 959         errno = ENOSYS;
 960         return -1;
 961 }
 962
 963 static int skel_setxattr(vfs_handle_struct *handle,
 964                         const struct smb_filename *smb_fname,
 965                         const char *name,
 966                         const void *value,
 967                         size_t size,
 968                         int flags)
 969 {
 970         errno = ENOSYS;
 971         return -1;
 972 }
 973
 974 static int skel_fsetxattr(vfs_handle_struct *handle, struct files_struct *fsp,
 975                           const char *name, const void *value, size_t size,
 976                           int flags)
 977 {
 978         errno = ENOSYS;
 979         return -1;
 980 }
 981
 982 static bool skel_aio_force(struct vfs_handle_struct *handle,
 983                            struct files_struct *fsp)
 984 {
 985         errno = ENOSYS;
 986         return false;
 987 }
 988
 989 static NTSTATUS skel_audit_file(struct vfs_handle_struct *handle,
 990                                 struct smb_filename *file,
 991                                 struct security_acl *sacl,
 992                                 uint32_t access_requested,
 993                                 uint32_t access_denied)
 994 {
 995         return NT_STATUS_NOT_IMPLEMENTED;
 996 }
 997
 998 static NTSTATUS skel_durable_cookie(struct vfs_handle_struct *handle,
 999                                     struct files_struct *fsp,
1000                                     TALLOC_CTX *mem_ctx,
1001                                     DATA_BLOB *cookie)
1002 {
1003         return NT_STATUS_NOT_IMPLEMENTED;
1004 }
1005
1006 static NTSTATUS skel_durable_disconnect(struct vfs_handle_struct *handle,
1007                                         struct files_struct *fsp,
1008                                         const DATA_BLOB old_cookie,
1009                                         TALLOC_CTX *mem_ctx,
1010                                         DATA_BLOB *new_cookie)
1011 {
1012         return NT_STATUS_NOT_IMPLEMENTED;
1013 }
1014
1015 static NTSTATUS skel_durable_reconnect(struct vfs_handle_struct *handle,
1016                                        struct smb_request *smb1req,
1017                                        struct smbXsrv_open *op,
1018                                        const DATA_BLOB old_cookie,
1019                                        TALLOC_CTX *mem_ctx,
1020                                        struct files_struct **fsp,
1021                                        DATA_BLOB *new_cookie)
1022 {
1023         return NT_STATUS_NOT_IMPLEMENTED;
1024 }
1025
1026 /* VFS operations structure */
1027
1028 static struct vfs_fn_pointers skel_opaque_fns = {
1029         /* Disk operations */
1030
1031         .connect_fn = skel_connect,
1032         .disconnect_fn = skel_disconnect,
1033         .disk_free_fn = skel_disk_free,
1034         .get_quota_fn = skel_get_quota,
1035         .set_quota_fn = skel_set_quota,
1036         .get_shadow_copy_data_fn = skel_get_shadow_copy_data,
1037         .statvfs_fn = skel_statvfs,
1038         .fs_capabilities_fn = skel_fs_capabilities,
1039         .get_dfs_referrals_fn = skel_get_dfs_referrals,
1040         .snap_check_path_fn = skel_snap_check_path,
1041         .snap_create_fn = skel_snap_create,
1042         .snap_delete_fn = skel_snap_delete,
1043
1044         /* Directory operations */
1045
1046         .opendir_fn = skel_opendir,
1047         .fdopendir_fn = skel_fdopendir,
1048         .readdir_fn = skel_readdir,
1049         .seekdir_fn = skel_seekdir,
1050         .telldir_fn = skel_telldir,
1051         .rewind_dir_fn = skel_rewind_dir,
1052         .mkdir_fn = skel_mkdir,
1053         .rmdir_fn = skel_rmdir,
1054         .closedir_fn = skel_closedir,
1055
1056         /* File operations */
1057
1058         .open_fn = skel_open,
1059         .create_file_fn = skel_create_file,
1060         .close_fn = skel_close_fn,
1061         .pread_fn = skel_pread,
1062         .pread_send_fn = skel_pread_send,
1063         .pread_recv_fn = skel_pread_recv,
1064         .pwrite_fn = skel_pwrite,
1065         .pwrite_send_fn = skel_pwrite_send,
1066         .pwrite_recv_fn = skel_pwrite_recv,
1067         .lseek_fn = skel_lseek,
1068         .sendfile_fn = skel_sendfile,
1069         .recvfile_fn = skel_recvfile,
1070         .renameat_fn = skel_renameat,
1071         .fsync_send_fn = skel_fsync_send,
1072         .fsync_recv_fn = skel_fsync_recv,
1073         .stat_fn = skel_stat,
1074         .fstat_fn = skel_fstat,
1075         .lstat_fn = skel_lstat,
1076         .get_alloc_size_fn = skel_get_alloc_size,
1077         .unlink_fn = skel_unlink,
1078         .chmod_fn = skel_chmod,
1079         .fchmod_fn = skel_fchmod,
1080         .chown_fn = skel_chown,
1081         .fchown_fn = skel_fchown,
1082         .lchown_fn = skel_lchown,
1083         .chdir_fn = skel_chdir,
1084         .getwd_fn = skel_getwd,
1085         .ntimes_fn = skel_ntimes,
1086         .ftruncate_fn = skel_ftruncate,
1087         .fallocate_fn = skel_fallocate,
1088         .lock_fn = skel_lock,
1089         .kernel_flock_fn = skel_kernel_flock,
1090         .linux_setlease_fn = skel_linux_setlease,
1091         .getlock_fn = skel_getlock,
1092         .symlink_fn = skel_symlink,
1093         .readlinkat_fn = skel_vfs_readlinkat,
1094         .linkat_fn = skel_linkat,
1095         .mknodat_fn = skel_mknodat,
1096         .realpath_fn = skel_realpath,
1097         .chflags_fn = skel_chflags,
1098         .file_id_create_fn = skel_file_id_create,
1099         .fs_file_id_fn = skel_fs_file_id,
1100         .offload_read_send_fn = skel_offload_read_send,
1101         .offload_read_recv_fn = skel_offload_read_recv,
1102         .offload_write_send_fn = skel_offload_write_send,
1103         .offload_write_recv_fn = skel_offload_write_recv,
1104         .get_compression_fn = skel_get_compression,
1105         .set_compression_fn = skel_set_compression,
1106
1107         .streaminfo_fn = skel_streaminfo,
1108         .get_real_filename_fn = skel_get_real_filename,
1109         .connectpath_fn = skel_connectpath,
1110         .brl_lock_windows_fn = skel_brl_lock_windows,
1111         .brl_unlock_windows_fn = skel_brl_unlock_windows,
1112         .strict_lock_check_fn = skel_strict_lock_check,
1113         .translate_name_fn = skel_translate_name,
1114         .fsctl_fn = skel_fsctl,
1115         .readdir_attr_fn = skel_readdir_attr,
1116         .audit_file_fn = skel_audit_file,
1117
1118         /* DOS attributes. */
1119         .get_dos_attributes_fn = skel_get_dos_attributes,
1120         .get_dos_attributes_send_fn = skel_get_dos_attributes_send,
1121         .get_dos_attributes_recv_fn = skel_get_dos_attributes_recv,
1122         .fget_dos_attributes_fn = skel_fget_dos_attributes,
1123         .set_dos_attributes_fn = skel_set_dos_attributes,
1124         .fset_dos_attributes_fn = skel_fset_dos_attributes,
1125
1126         /* NT ACL operations. */
1127
1128         .fget_nt_acl_fn = skel_fget_nt_acl,
1129         .get_nt_acl_fn = skel_get_nt_acl,
1130         .fset_nt_acl_fn = skel_fset_nt_acl,
1131
1132         /* POSIX ACL operations. */
1133
1134         .sys_acl_get_file_fn = skel_sys_acl_get_file,
1135         .sys_acl_get_fd_fn = skel_sys_acl_get_fd,
1136         .sys_acl_blob_get_file_fn = skel_sys_acl_blob_get_file,
1137         .sys_acl_blob_get_fd_fn = skel_sys_acl_blob_get_fd,
1138         .sys_acl_set_file_fn = skel_sys_acl_set_file,
1139         .sys_acl_set_fd_fn = skel_sys_acl_set_fd,
1140         .sys_acl_delete_def_file_fn = skel_sys_acl_delete_def_file,
1141
1142         /* EA operations. */
1143         .getxattr_fn = skel_getxattr,
1144         .getxattrat_send_fn = skel_getxattrat_send,
1145         .getxattrat_recv_fn = skel_getxattrat_recv,
1146         .fgetxattr_fn = skel_fgetxattr,
1147         .listxattr_fn = skel_listxattr,
1148         .flistxattr_fn = skel_flistxattr,
1149         .removexattr_fn = skel_removexattr,
1150         .fremovexattr_fn = skel_fremovexattr,
1151         .setxattr_fn = skel_setxattr,
1152         .fsetxattr_fn = skel_fsetxattr,
1153
1154         /* aio operations */
1155         .aio_force_fn = skel_aio_force,
1156
1157         /* durable handle operations */
1158         .durable_cookie_fn = skel_durable_cookie,
1159         .durable_disconnect_fn = skel_durable_disconnect,
1160         .durable_reconnect_fn = skel_durable_reconnect,
1161 };
1162
1163 static_decl_vfs;
1164 NTSTATUS vfs_skel_opaque_init(TALLOC_CTX *ctx)
1165 {
1166         /*
1167          * smb_vfs_assert_all_fns() makes sure every
1168          * call is implemented.
1169          *
1170          * An opaque module requires this!
1171          */
1172         smb_vfs_assert_all_fns(&skel_opaque_fns, "skel_opaque");
1173         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "skel_opaque",
1174                                 &skel_opaque_fns);
1175 }