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_mkdirat(vfs_handle_struct *handle,
 169                 struct files_struct *dirfsp,
 170                 const struct smb_filename *smb_fname,
 171                 mode_t mode)
 172 {
 173         errno = ENOSYS;
 174         return -1;
 175 }
 176
 177 static int skel_closedir(vfs_handle_struct *handle, DIR *dir)
 178 {
 179         errno = ENOSYS;
 180         return -1;
 181 }
 182
 183 static int skel_open(vfs_handle_struct *handle, struct smb_filename *smb_fname,
 184                      files_struct *fsp, int flags, mode_t mode)
 185 {
 186         errno = ENOSYS;
 187         return -1;
 188 }
 189
 190 static NTSTATUS skel_create_file(struct vfs_handle_struct *handle,
 191                                  struct smb_request *req,
 192                                  uint16_t root_dir_fid,
 193                                  struct smb_filename *smb_fname,
 194                                  uint32_t access_mask,
 195                                  uint32_t share_access,
 196                                  uint32_t create_disposition,
 197                                  uint32_t create_options,
 198                                  uint32_t file_attributes,
 199                                  uint32_t oplock_request,
 200                                  const struct smb2_lease *lease,
 201                                  uint64_t allocation_size,
 202                                  uint32_t private_flags,
 203                                  struct security_descriptor *sd,
 204                                  struct ea_list *ea_list,
 205                                  files_struct **result, int *pinfo,
 206                                  const struct smb2_create_blobs *in_context_blobs,
 207                                  struct smb2_create_blobs *out_context_blobs)
 208 {
 209         return NT_STATUS_NOT_IMPLEMENTED;
 210 }
 211
 212 static int skel_close_fn(vfs_handle_struct *handle, files_struct *fsp)
 213 {
 214         errno = ENOSYS;
 215         return -1;
 216 }
 217
 218 static ssize_t skel_pread(vfs_handle_struct *handle, files_struct *fsp,
 219                           void *data, size_t n, off_t offset)
 220 {
 221         errno = ENOSYS;
 222         return -1;
 223 }
 224
 225 static struct tevent_req *skel_pread_send(struct vfs_handle_struct *handle,
 226                                           TALLOC_CTX *mem_ctx,
 227                                           struct tevent_context *ev,
 228                                           struct files_struct *fsp,
 229                                           void *data, size_t n, off_t offset)
 230 {
 231         return NULL;
 232 }
 233
 234 static ssize_t skel_pread_recv(struct tevent_req *req,
 235                                struct vfs_aio_state *vfs_aio_state)
 236 {
 237         vfs_aio_state->error = ENOSYS;
 238         return -1;
 239 }
 240
 241 static ssize_t skel_pwrite(vfs_handle_struct *handle, files_struct *fsp,
 242                            const void *data, size_t n, off_t offset)
 243 {
 244         errno = ENOSYS;
 245         return -1;
 246 }
 247
 248 static struct tevent_req *skel_pwrite_send(struct vfs_handle_struct *handle,
 249                                            TALLOC_CTX *mem_ctx,
 250                                            struct tevent_context *ev,
 251                                            struct files_struct *fsp,
 252                                            const void *data,
 253                                            size_t n, off_t offset)
 254 {
 255         return NULL;
 256 }
 257
 258 static ssize_t skel_pwrite_recv(struct tevent_req *req,
 259                                 struct vfs_aio_state *vfs_aio_state)
 260 {
 261         vfs_aio_state->error = ENOSYS;
 262         return -1;
 263 }
 264
 265 static off_t skel_lseek(vfs_handle_struct *handle, files_struct *fsp,
 266                         off_t offset, int whence)
 267 {
 268         errno = ENOSYS;
 269         return (off_t) - 1;
 270 }
 271
 272 static ssize_t skel_sendfile(vfs_handle_struct *handle, int tofd,
 273                              files_struct *fromfsp, const DATA_BLOB *hdr,
 274                              off_t offset, size_t n)
 275 {
 276         errno = ENOSYS;
 277         return -1;
 278 }
 279
 280 static ssize_t skel_recvfile(vfs_handle_struct *handle, int fromfd,
 281                              files_struct *tofsp, off_t offset, size_t n)
 282 {
 283         errno = ENOSYS;
 284         return -1;
 285 }
 286
 287 static int skel_renameat(vfs_handle_struct *handle,
 288                        files_struct *srcfsp,
 289                        const struct smb_filename *smb_fname_src,
 290                        files_struct *dstfsp,
 291                        const struct smb_filename *smb_fname_dst)
 292 {
 293         errno = ENOSYS;
 294         return -1;
 295 }
 296
 297 static struct tevent_req *skel_fsync_send(struct vfs_handle_struct *handle,
 298                                           TALLOC_CTX *mem_ctx,
 299                                           struct tevent_context *ev,
 300                                           struct files_struct *fsp)
 301 {
 302         return NULL;
 303 }
 304
 305 static int skel_fsync_recv(struct tevent_req *req,
 306                            struct vfs_aio_state *vfs_aio_state)
 307 {
 308         vfs_aio_state->error = ENOSYS;
 309         return -1;
 310 }
 311
 312 static int skel_stat(vfs_handle_struct *handle, struct smb_filename *smb_fname)
 313 {
 314         errno = ENOSYS;
 315         return -1;
 316 }
 317
 318 static int skel_fstat(vfs_handle_struct *handle, files_struct *fsp,
 319                       SMB_STRUCT_STAT *sbuf)
 320 {
 321         errno = ENOSYS;
 322         return -1;
 323 }
 324
 325 static int skel_lstat(vfs_handle_struct *handle,
 326                       struct smb_filename *smb_fname)
 327 {
 328         errno = ENOSYS;
 329         return -1;
 330 }
 331
 332 static uint64_t skel_get_alloc_size(struct vfs_handle_struct *handle,
 333                                     struct files_struct *fsp,
 334                                     const SMB_STRUCT_STAT *sbuf)
 335 {
 336         errno = ENOSYS;
 337         return -1;
 338 }
 339
 340 static int skel_unlinkat(vfs_handle_struct *handle,
 341                         struct files_struct *dirfsp,
 342                         const struct smb_filename *smb_fname,
 343                         int flags)
 344 {
 345         errno = ENOSYS;
 346         return -1;
 347 }
 348
 349 static int skel_chmod(vfs_handle_struct *handle,
 350                         const struct smb_filename *smb_fname,
 351                         mode_t mode)
 352 {
 353         errno = ENOSYS;
 354         return -1;
 355 }
 356
 357 static int skel_fchmod(vfs_handle_struct *handle, files_struct *fsp,
 358                        mode_t mode)
 359 {
 360         errno = ENOSYS;
 361         return -1;
 362 }
 363
 364 static int skel_chown(vfs_handle_struct *handle,
 365                         const struct smb_filename *smb_fname,
 366                         uid_t uid,
 367                         gid_t gid)
 368 {
 369         errno = ENOSYS;
 370         return -1;
 371 }
 372
 373 static int skel_fchown(vfs_handle_struct *handle, files_struct *fsp,
 374                        uid_t uid, gid_t gid)
 375 {
 376         errno = ENOSYS;
 377         return -1;
 378 }
 379
 380 static int skel_lchown(vfs_handle_struct *handle,
 381                         const struct smb_filename *smb_fname,
 382                         uid_t uid,
 383                         gid_t gid)
 384 {
 385         errno = ENOSYS;
 386         return -1;
 387 }
 388
 389 static int skel_chdir(vfs_handle_struct *handle,
 390                         const struct smb_filename *smb_fname)
 391 {
 392         errno = ENOSYS;
 393         return -1;
 394 }
 395
 396 static struct smb_filename *skel_getwd(vfs_handle_struct *handle,
 397                                 TALLOC_CTX *ctx)
 398 {
 399         errno = ENOSYS;
 400         return NULL;
 401 }
 402
 403 static int skel_ntimes(vfs_handle_struct *handle,
 404                        const struct smb_filename *smb_fname,
 405                        struct smb_file_time *ft)
 406 {
 407         errno = ENOSYS;
 408         return -1;
 409 }
 410
 411 static int skel_ftruncate(vfs_handle_struct *handle, files_struct *fsp,
 412                           off_t offset)
 413 {
 414         errno = ENOSYS;
 415         return -1;
 416 }
 417
 418 static int skel_fallocate(vfs_handle_struct *handle, files_struct *fsp,
 419                           uint32_t mode, off_t offset, off_t len)
 420 {
 421         errno = ENOSYS;
 422         return -1;
 423 }
 424
 425 static bool skel_lock(vfs_handle_struct *handle, files_struct *fsp, int op,
 426                       off_t offset, off_t count, int type)
 427 {
 428         errno = ENOSYS;
 429         return false;
 430 }
 431
 432 static int skel_kernel_flock(struct vfs_handle_struct *handle,
 433                              struct files_struct *fsp,
 434                              uint32_t share_mode, uint32_t access_mask)
 435 {
 436         errno = ENOSYS;
 437         return -1;
 438 }
 439
 440 static int skel_fcntl(struct vfs_handle_struct *handle,
 441                       struct files_struct *fsp, int cmd, va_list cmd_arg)
 442 {
 443         errno = ENOSYS;
 444         return -1;
 445 }
 446
 447 static int skel_linux_setlease(struct vfs_handle_struct *handle,
 448                                struct files_struct *fsp, int leasetype)
 449 {
 450         errno = ENOSYS;
 451         return -1;
 452 }
 453
 454 static bool skel_getlock(vfs_handle_struct *handle, files_struct *fsp,
 455                          off_t *poffset, off_t *pcount, int *ptype,
 456                          pid_t *ppid)
 457 {
 458         errno = ENOSYS;
 459         return false;
 460 }
 461
 462 static int skel_symlinkat(vfs_handle_struct *handle,
 463                         const char *link_contents,
 464                         struct files_struct *dirfsp,
 465                         const struct smb_filename *new_smb_fname)
 466 {
 467         errno = ENOSYS;
 468         return -1;
 469 }
 470
 471 static int skel_vfs_readlinkat(vfs_handle_struct *handle,
 472                         files_struct *dirfsp,
 473                         const struct smb_filename *smb_fname,
 474                         char *buf,
 475                         size_t bufsiz)
 476 {
 477         errno = ENOSYS;
 478         return -1;
 479 }
 480
 481 static int skel_linkat(vfs_handle_struct *handle,
 482                         files_struct *srcfsp,
 483                         const struct smb_filename *old_smb_fname,
 484                         files_struct *dstfsp,
 485                         const struct smb_filename *new_smb_fname,
 486                         int flags)
 487 {
 488         errno = ENOSYS;
 489         return -1;
 490 }
 491
 492 static int skel_mknodat(vfs_handle_struct *handle,
 493                         files_struct *dirfsp,
 494                         const struct smb_filename *smb_fname,
 495                         mode_t mode,
 496                         SMB_DEV_T dev)
 497 {
 498         errno = ENOSYS;
 499         return -1;
 500 }
 501
 502 static struct smb_filename *skel_realpath(vfs_handle_struct *handle,
 503                         TALLOC_CTX *ctx,
 504                         const struct smb_filename *smb_fname)
 505 {
 506         errno = ENOSYS;
 507         return NULL;
 508 }
 509
 510 static int skel_chflags(vfs_handle_struct *handle,
 511                         const struct smb_filename *smb_fname,
 512                         uint flags)
 513 {
 514         errno = ENOSYS;
 515         return -1;
 516 }
 517
 518 static struct file_id skel_file_id_create(vfs_handle_struct *handle,
 519                                           const SMB_STRUCT_STAT *sbuf)
 520 {
 521         struct file_id id;
 522         ZERO_STRUCT(id);
 523         errno = ENOSYS;
 524         return id;
 525 }
 526
 527 static uint64_t skel_fs_file_id(vfs_handle_struct *handle,
 528                                 const SMB_STRUCT_STAT *sbuf)
 529 {
 530         errno = ENOSYS;
 531         return 0;
 532 }
 533
 534 struct skel_offload_read_state {
 535         bool dummy;
 536 };
 537
 538 static struct tevent_req *skel_offload_read_send(
 539         TALLOC_CTX *mem_ctx,
 540         struct tevent_context *ev,
 541         struct vfs_handle_struct *handle,
 542         struct files_struct *fsp,
 543         uint32_t fsctl,
 544         uint32_t ttl,
 545         off_t offset,
 546         size_t to_copy)
 547 {
 548         struct tevent_req *req = NULL;
 549         struct skel_offload_read_state *state = NULL;
 550
 551         req = tevent_req_create(mem_ctx, &state, struct skel_offload_read_state);
 552         if (req == NULL) {
 553                 return NULL;
 554         }
 555
 556         tevent_req_nterror(req, NT_STATUS_NOT_IMPLEMENTED);
 557         return tevent_req_post(req, ev);
 558 }
 559
 560 static NTSTATUS skel_offload_read_recv(struct tevent_req *req,
 561                                        struct vfs_handle_struct *handle,
 562                                        TALLOC_CTX *mem_ctx,
 563                                        DATA_BLOB *_token_blob)
 564 {
 565         NTSTATUS status;
 566
 567         if (tevent_req_is_nterror(req, &status)) {
 568                 tevent_req_received(req);
 569                 return status;
 570         }
 571         tevent_req_received(req);
 572
 573         return NT_STATUS_OK;
 574 }
 575
 576 struct skel_cc_state {
 577         uint64_t unused;
 578 };
 579 static struct tevent_req *skel_offload_write_send(struct vfs_handle_struct *handle,
 580                                                TALLOC_CTX *mem_ctx,
 581                                                struct tevent_context *ev,
 582                                                uint32_t fsctl,
 583                                                DATA_BLOB *token,
 584                                                off_t transfer_offset,
 585                                                struct files_struct *dest_fsp,
 586                                                off_t dest_off,
 587                                                off_t num)
 588 {
 589         struct tevent_req *req;
 590         struct skel_cc_state *cc_state;
 591
 592         req = tevent_req_create(mem_ctx, &cc_state, struct skel_cc_state);
 593         if (req == NULL) {
 594                 return NULL;
 595         }
 596
 597         tevent_req_nterror(req, NT_STATUS_NOT_IMPLEMENTED);
 598         return tevent_req_post(req, ev);
 599 }
 600
 601 static NTSTATUS skel_offload_write_recv(struct vfs_handle_struct *handle,
 602                                      struct tevent_req *req,
 603                                      off_t *copied)
 604 {
 605         NTSTATUS status;
 606
 607         if (tevent_req_is_nterror(req, &status)) {
 608                 tevent_req_received(req);
 609                 return status;
 610         }
 611         tevent_req_received(req);
 612
 613         return NT_STATUS_OK;
 614 }
 615
 616 static NTSTATUS skel_get_compression(struct vfs_handle_struct *handle,
 617                                      TALLOC_CTX *mem_ctx,
 618                                      struct files_struct *fsp,
 619                                      struct smb_filename *smb_fname,
 620                                      uint16_t *_compression_fmt)
 621 {
 622         return NT_STATUS_INVALID_DEVICE_REQUEST;
 623 }
 624
 625 static NTSTATUS skel_set_compression(struct vfs_handle_struct *handle,
 626                                      TALLOC_CTX *mem_ctx,
 627                                      struct files_struct *fsp,
 628                                      uint16_t compression_fmt)
 629 {
 630         return NT_STATUS_INVALID_DEVICE_REQUEST;
 631 }
 632
 633 static NTSTATUS skel_streaminfo(struct vfs_handle_struct *handle,
 634                                 struct files_struct *fsp,
 635                                 const struct smb_filename *smb_fname,
 636                                 TALLOC_CTX *mem_ctx,
 637                                 unsigned int *num_streams,
 638                                 struct stream_struct **streams)
 639 {
 640         return NT_STATUS_NOT_IMPLEMENTED;
 641 }
 642
 643 static int skel_get_real_filename(struct vfs_handle_struct *handle,
 644                                   const char *path,
 645                                   const char *name,
 646                                   TALLOC_CTX *mem_ctx, char **found_name)
 647 {
 648         errno = ENOSYS;
 649         return -1;
 650 }
 651
 652 static const char *skel_connectpath(struct vfs_handle_struct *handle,
 653                                 const struct smb_filename *smb_fname)
 654 {
 655         errno = ENOSYS;
 656         return NULL;
 657 }
 658
 659 static NTSTATUS skel_brl_lock_windows(struct vfs_handle_struct *handle,
 660                                       struct byte_range_lock *br_lck,
 661                                       struct lock_struct *plock)
 662 {
 663         return NT_STATUS_NOT_IMPLEMENTED;
 664 }
 665
 666 static bool skel_brl_unlock_windows(struct vfs_handle_struct *handle,
 667                                     struct byte_range_lock *br_lck,
 668                                     const struct lock_struct *plock)
 669 {
 670         errno = ENOSYS;
 671         return false;
 672 }
 673
 674 static bool skel_strict_lock_check(struct vfs_handle_struct *handle,
 675                                    struct files_struct *fsp,
 676                                    struct lock_struct *plock)
 677 {
 678         errno = ENOSYS;
 679         return false;
 680 }
 681
 682 static NTSTATUS skel_translate_name(struct vfs_handle_struct *handle,
 683                                     const char *mapped_name,
 684                                     enum vfs_translate_direction direction,
 685                                     TALLOC_CTX *mem_ctx, char **pmapped_name)
 686 {
 687         return NT_STATUS_NOT_IMPLEMENTED;
 688 }
 689
 690 static NTSTATUS skel_fsctl(struct vfs_handle_struct *handle,
 691                            struct files_struct *fsp,
 692                            TALLOC_CTX *ctx,
 693                            uint32_t function,
 694                            uint16_t req_flags,  /* Needed for UNICODE ... */
 695                            const uint8_t *_in_data,
 696                            uint32_t in_len,
 697                            uint8_t **_out_data,
 698                            uint32_t max_out_len, uint32_t *out_len)
 699 {
 700         return NT_STATUS_NOT_IMPLEMENTED;
 701 }
 702
 703 static NTSTATUS skel_readdir_attr(struct vfs_handle_struct *handle,
 704                                   const struct smb_filename *fname,
 705                                   TALLOC_CTX *mem_ctx,
 706                                   struct readdir_attr_data **pattr_data)
 707 {
 708         return NT_STATUS_NOT_IMPLEMENTED;
 709 }
 710
 711 static NTSTATUS skel_get_dos_attributes(struct vfs_handle_struct *handle,
 712                                 struct smb_filename *smb_fname,
 713                                 uint32_t *dosmode)
 714 {
 715         return NT_STATUS_NOT_IMPLEMENTED;
 716 }
 717
 718 struct skel_get_dos_attributes_state {
 719         struct vfs_aio_state aio_state;
 720         uint32_t dosmode;
 721 };
 722
 723 static struct tevent_req *skel_get_dos_attributes_send(
 724                         TALLOC_CTX *mem_ctx,
 725                         struct tevent_context *ev,
 726                         struct vfs_handle_struct *handle,
 727                         files_struct *dir_fsp,
 728                         struct smb_filename *smb_fname)
 729 {
 730         struct tevent_req *req = NULL;
 731         struct skel_get_dos_attributes_state *state = NULL;
 732
 733         req = tevent_req_create(mem_ctx, &state,
 734                                 struct skel_get_dos_attributes_state);
 735         if (req == NULL) {
 736                 return NULL;
 737         }
 738
 739         tevent_req_nterror(req, NT_STATUS_NOT_IMPLEMENTED);
 740         return tevent_req_post(req, ev);
 741 }
 742
 743 static NTSTATUS skel_get_dos_attributes_recv(struct tevent_req *req,
 744                                              struct vfs_aio_state *aio_state,
 745                                              uint32_t *dosmode)
 746 {
 747         struct skel_get_dos_attributes_state *state =
 748                 tevent_req_data(req,
 749                 struct skel_get_dos_attributes_state);
 750         NTSTATUS status;
 751
 752         if (tevent_req_is_nterror(req, &status)) {
 753                 tevent_req_received(req);
 754                 return status;
 755         }
 756
 757         *aio_state = state->aio_state;
 758         *dosmode = state->dosmode;
 759         tevent_req_received(req);
 760         return NT_STATUS_OK;
 761 }
 762
 763 static NTSTATUS skel_fget_dos_attributes(struct vfs_handle_struct *handle,
 764                                 struct files_struct *fsp,
 765                                 uint32_t *dosmode)
 766 {
 767         return NT_STATUS_NOT_IMPLEMENTED;
 768 }
 769
 770 static NTSTATUS skel_set_dos_attributes(struct vfs_handle_struct *handle,
 771                                 const struct smb_filename *smb_fname,
 772                                 uint32_t dosmode)
 773 {
 774         return NT_STATUS_NOT_IMPLEMENTED;
 775 }
 776
 777 static NTSTATUS skel_fset_dos_attributes(struct vfs_handle_struct *handle,
 778                                 struct files_struct *fsp,
 779                                 uint32_t dosmode)
 780 {
 781         return NT_STATUS_NOT_IMPLEMENTED;
 782 }
 783
 784 static NTSTATUS skel_fget_nt_acl(vfs_handle_struct *handle, files_struct *fsp,
 785                                  uint32_t security_info,
 786                                  TALLOC_CTX *mem_ctx,
 787                                  struct security_descriptor **ppdesc)
 788 {
 789         return NT_STATUS_NOT_IMPLEMENTED;
 790 }
 791
 792 static NTSTATUS skel_get_nt_acl(vfs_handle_struct *handle,
 793                                 const struct smb_filename *smb_fname,
 794                                 uint32_t security_info,
 795                                 TALLOC_CTX *mem_ctx,
 796                                 struct security_descriptor **ppdesc)
 797 {
 798         return NT_STATUS_NOT_IMPLEMENTED;
 799 }
 800
 801 static NTSTATUS skel_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp,
 802                                  uint32_t security_info_sent,
 803                                  const struct security_descriptor *psd)
 804 {
 805         return NT_STATUS_NOT_IMPLEMENTED;
 806 }
 807
 808 static SMB_ACL_T skel_sys_acl_get_file(vfs_handle_struct *handle,
 809                                        const struct smb_filename *smb_fname,
 810                                        SMB_ACL_TYPE_T type,
 811                                        TALLOC_CTX *mem_ctx)
 812 {
 813         errno = ENOSYS;
 814         return (SMB_ACL_T) NULL;
 815 }
 816
 817 static SMB_ACL_T skel_sys_acl_get_fd(vfs_handle_struct *handle,
 818                                      files_struct *fsp, TALLOC_CTX *mem_ctx)
 819 {
 820         errno = ENOSYS;
 821         return (SMB_ACL_T) NULL;
 822 }
 823
 824 static int skel_sys_acl_blob_get_file(vfs_handle_struct *handle,
 825                                 const struct smb_filename *smb_fname,
 826                                 TALLOC_CTX *mem_ctx,
 827                                 char **blob_description,
 828                                 DATA_BLOB *blob)
 829 {
 830         errno = ENOSYS;
 831         return -1;
 832 }
 833
 834 static int skel_sys_acl_blob_get_fd(vfs_handle_struct *handle,
 835                                     files_struct *fsp, TALLOC_CTX *mem_ctx,
 836                                     char **blob_description, DATA_BLOB *blob)
 837 {
 838         errno = ENOSYS;
 839         return -1;
 840 }
 841
 842 static int skel_sys_acl_set_file(vfs_handle_struct *handle,
 843                                 const struct smb_filename *smb_fname,
 844                                 SMB_ACL_TYPE_T acltype,
 845                                 SMB_ACL_T theacl)
 846 {
 847         errno = ENOSYS;
 848         return -1;
 849 }
 850
 851 static int skel_sys_acl_set_fd(vfs_handle_struct *handle, files_struct *fsp,
 852                                SMB_ACL_T theacl)
 853 {
 854         errno = ENOSYS;
 855         return -1;
 856 }
 857
 858 static int skel_sys_acl_delete_def_file(vfs_handle_struct *handle,
 859                                         const struct smb_filename *smb_fname)
 860 {
 861         errno = ENOSYS;
 862         return -1;
 863 }
 864
 865 static ssize_t skel_getxattr(vfs_handle_struct *handle,
 866                                 const struct smb_filename *smb_fname,
 867                                 const char *name,
 868                                 void *value,
 869                                 size_t size)
 870 {
 871         errno = ENOSYS;
 872         return -1;
 873 }
 874
 875 struct skel_getxattrat_state {
 876         struct vfs_aio_state aio_state;
 877         ssize_t xattr_size;
 878         uint8_t *xattr_value;
 879 };
 880
 881 static struct tevent_req *skel_getxattrat_send(
 882                         TALLOC_CTX *mem_ctx,
 883                         struct tevent_context *ev,
 884                         struct vfs_handle_struct *handle,
 885                         files_struct *dir_fsp,
 886                         const struct smb_filename *smb_fname,
 887                         const char *xattr_name,
 888                         size_t alloc_hint)
 889 {
 890         struct tevent_req *req = NULL;
 891         struct skel_getxattrat_state *state = NULL;
 892
 893         req = tevent_req_create(mem_ctx, &state,
 894                                 struct skel_getxattrat_state);
 895         if (req == NULL) {
 896                 return NULL;
 897         }
 898
 899         tevent_req_error(req, ENOSYS);
 900         return tevent_req_post(req, ev);
 901 }
 902
 903 static ssize_t skel_getxattrat_recv(struct tevent_req *req,
 904                                     struct vfs_aio_state *aio_state,
 905                                     TALLOC_CTX *mem_ctx,
 906                                     uint8_t **xattr_value)
 907 {
 908         struct skel_getxattrat_state *state = tevent_req_data(
 909                 req, struct skel_getxattrat_state);
 910         ssize_t xattr_size;
 911
 912         if (tevent_req_is_unix_error(req, &aio_state->error)) {
 913                 tevent_req_received(req);
 914                 return -1;
 915         }
 916
 917         *aio_state = state->aio_state;
 918         xattr_size = state->xattr_size;
 919         if (xattr_value != NULL) {
 920                 *xattr_value = talloc_move(mem_ctx, &state->xattr_value);
 921         }
 922
 923         tevent_req_received(req);
 924         return xattr_size;
 925 }
 926
 927 static ssize_t skel_fgetxattr(vfs_handle_struct *handle,
 928                               struct files_struct *fsp, const char *name,
 929                               void *value, size_t size)
 930 {
 931         errno = ENOSYS;
 932         return -1;
 933 }
 934
 935 static ssize_t skel_listxattr(vfs_handle_struct *handle,
 936                                 const struct smb_filename *smb_fname,
 937                                 char *list,
 938                                 size_t size)
 939 {
 940         errno = ENOSYS;
 941         return -1;
 942 }
 943
 944 static ssize_t skel_flistxattr(vfs_handle_struct *handle,
 945                                struct files_struct *fsp, char *list,
 946                                size_t size)
 947 {
 948         errno = ENOSYS;
 949         return -1;
 950 }
 951
 952 static int skel_removexattr(vfs_handle_struct *handle,
 953                         const struct smb_filename *smb_fname,
 954                         const char *name)
 955 {
 956         errno = ENOSYS;
 957         return -1;
 958 }
 959
 960 static int skel_fremovexattr(vfs_handle_struct *handle,
 961                              struct files_struct *fsp, const char *name)
 962 {
 963         errno = ENOSYS;
 964         return -1;
 965 }
 966
 967 static int skel_setxattr(vfs_handle_struct *handle,
 968                         const struct smb_filename *smb_fname,
 969                         const char *name,
 970                         const void *value,
 971                         size_t size,
 972                         int flags)
 973 {
 974         errno = ENOSYS;
 975         return -1;
 976 }
 977
 978 static int skel_fsetxattr(vfs_handle_struct *handle, struct files_struct *fsp,
 979                           const char *name, const void *value, size_t size,
 980                           int flags)
 981 {
 982         errno = ENOSYS;
 983         return -1;
 984 }
 985
 986 static bool skel_aio_force(struct vfs_handle_struct *handle,
 987                            struct files_struct *fsp)
 988 {
 989         errno = ENOSYS;
 990         return false;
 991 }
 992
 993 static NTSTATUS skel_audit_file(struct vfs_handle_struct *handle,
 994                                 struct smb_filename *file,
 995                                 struct security_acl *sacl,
 996                                 uint32_t access_requested,
 997                                 uint32_t access_denied)
 998 {
 999         return NT_STATUS_NOT_IMPLEMENTED;
1000 }
1001
1002 static NTSTATUS skel_durable_cookie(struct vfs_handle_struct *handle,
1003                                     struct files_struct *fsp,
1004                                     TALLOC_CTX *mem_ctx,
1005                                     DATA_BLOB *cookie)
1006 {
1007         return NT_STATUS_NOT_IMPLEMENTED;
1008 }
1009
1010 static NTSTATUS skel_durable_disconnect(struct vfs_handle_struct *handle,
1011                                         struct files_struct *fsp,
1012                                         const DATA_BLOB old_cookie,
1013                                         TALLOC_CTX *mem_ctx,
1014                                         DATA_BLOB *new_cookie)
1015 {
1016         return NT_STATUS_NOT_IMPLEMENTED;
1017 }
1018
1019 static NTSTATUS skel_durable_reconnect(struct vfs_handle_struct *handle,
1020                                        struct smb_request *smb1req,
1021                                        struct smbXsrv_open *op,
1022                                        const DATA_BLOB old_cookie,
1023                                        TALLOC_CTX *mem_ctx,
1024                                        struct files_struct **fsp,
1025                                        DATA_BLOB *new_cookie)
1026 {
1027         return NT_STATUS_NOT_IMPLEMENTED;
1028 }
1029
1030 /* VFS operations structure */
1031
1032 static struct vfs_fn_pointers skel_opaque_fns = {
1033         /* Disk operations */
1034
1035         .connect_fn = skel_connect,
1036         .disconnect_fn = skel_disconnect,
1037         .disk_free_fn = skel_disk_free,
1038         .get_quota_fn = skel_get_quota,
1039         .set_quota_fn = skel_set_quota,
1040         .get_shadow_copy_data_fn = skel_get_shadow_copy_data,
1041         .statvfs_fn = skel_statvfs,
1042         .fs_capabilities_fn = skel_fs_capabilities,
1043         .get_dfs_referrals_fn = skel_get_dfs_referrals,
1044         .snap_check_path_fn = skel_snap_check_path,
1045         .snap_create_fn = skel_snap_create,
1046         .snap_delete_fn = skel_snap_delete,
1047
1048         /* Directory operations */
1049
1050         .opendir_fn = skel_opendir,
1051         .fdopendir_fn = skel_fdopendir,
1052         .readdir_fn = skel_readdir,
1053         .seekdir_fn = skel_seekdir,
1054         .telldir_fn = skel_telldir,
1055         .rewind_dir_fn = skel_rewind_dir,
1056         .mkdirat_fn = skel_mkdirat,
1057         .closedir_fn = skel_closedir,
1058
1059         /* File operations */
1060
1061         .open_fn = skel_open,
1062         .create_file_fn = skel_create_file,
1063         .close_fn = skel_close_fn,
1064         .pread_fn = skel_pread,
1065         .pread_send_fn = skel_pread_send,
1066         .pread_recv_fn = skel_pread_recv,
1067         .pwrite_fn = skel_pwrite,
1068         .pwrite_send_fn = skel_pwrite_send,
1069         .pwrite_recv_fn = skel_pwrite_recv,
1070         .lseek_fn = skel_lseek,
1071         .sendfile_fn = skel_sendfile,
1072         .recvfile_fn = skel_recvfile,
1073         .renameat_fn = skel_renameat,
1074         .fsync_send_fn = skel_fsync_send,
1075         .fsync_recv_fn = skel_fsync_recv,
1076         .stat_fn = skel_stat,
1077         .fstat_fn = skel_fstat,
1078         .lstat_fn = skel_lstat,
1079         .get_alloc_size_fn = skel_get_alloc_size,
1080         .unlinkat_fn = skel_unlinkat,
1081         .chmod_fn = skel_chmod,
1082         .fchmod_fn = skel_fchmod,
1083         .chown_fn = skel_chown,
1084         .fchown_fn = skel_fchown,
1085         .lchown_fn = skel_lchown,
1086         .chdir_fn = skel_chdir,
1087         .getwd_fn = skel_getwd,
1088         .ntimes_fn = skel_ntimes,
1089         .ftruncate_fn = skel_ftruncate,
1090         .fallocate_fn = skel_fallocate,
1091         .lock_fn = skel_lock,
1092         .kernel_flock_fn = skel_kernel_flock,
1093         .fcntl_fn = skel_fcntl,
1094         .linux_setlease_fn = skel_linux_setlease,
1095         .getlock_fn = skel_getlock,
1096         .symlinkat_fn = skel_symlinkat,
1097         .readlinkat_fn = skel_vfs_readlinkat,
1098         .linkat_fn = skel_linkat,
1099         .mknodat_fn = skel_mknodat,
1100         .realpath_fn = skel_realpath,
1101         .chflags_fn = skel_chflags,
1102         .file_id_create_fn = skel_file_id_create,
1103         .fs_file_id_fn = skel_fs_file_id,
1104         .offload_read_send_fn = skel_offload_read_send,
1105         .offload_read_recv_fn = skel_offload_read_recv,
1106         .offload_write_send_fn = skel_offload_write_send,
1107         .offload_write_recv_fn = skel_offload_write_recv,
1108         .get_compression_fn = skel_get_compression,
1109         .set_compression_fn = skel_set_compression,
1110
1111         .streaminfo_fn = skel_streaminfo,
1112         .get_real_filename_fn = skel_get_real_filename,
1113         .connectpath_fn = skel_connectpath,
1114         .brl_lock_windows_fn = skel_brl_lock_windows,
1115         .brl_unlock_windows_fn = skel_brl_unlock_windows,
1116         .strict_lock_check_fn = skel_strict_lock_check,
1117         .translate_name_fn = skel_translate_name,
1118         .fsctl_fn = skel_fsctl,
1119         .readdir_attr_fn = skel_readdir_attr,
1120         .audit_file_fn = skel_audit_file,
1121
1122         /* DOS attributes. */
1123         .get_dos_attributes_fn = skel_get_dos_attributes,
1124         .get_dos_attributes_send_fn = skel_get_dos_attributes_send,
1125         .get_dos_attributes_recv_fn = skel_get_dos_attributes_recv,
1126         .fget_dos_attributes_fn = skel_fget_dos_attributes,
1127         .set_dos_attributes_fn = skel_set_dos_attributes,
1128         .fset_dos_attributes_fn = skel_fset_dos_attributes,
1129
1130         /* NT ACL operations. */
1131
1132         .fget_nt_acl_fn = skel_fget_nt_acl,
1133         .get_nt_acl_fn = skel_get_nt_acl,
1134         .fset_nt_acl_fn = skel_fset_nt_acl,
1135
1136         /* POSIX ACL operations. */
1137
1138         .sys_acl_get_file_fn = skel_sys_acl_get_file,
1139         .sys_acl_get_fd_fn = skel_sys_acl_get_fd,
1140         .sys_acl_blob_get_file_fn = skel_sys_acl_blob_get_file,
1141         .sys_acl_blob_get_fd_fn = skel_sys_acl_blob_get_fd,
1142         .sys_acl_set_file_fn = skel_sys_acl_set_file,
1143         .sys_acl_set_fd_fn = skel_sys_acl_set_fd,
1144         .sys_acl_delete_def_file_fn = skel_sys_acl_delete_def_file,
1145
1146         /* EA operations. */
1147         .getxattr_fn = skel_getxattr,
1148         .getxattrat_send_fn = skel_getxattrat_send,
1149         .getxattrat_recv_fn = skel_getxattrat_recv,
1150         .fgetxattr_fn = skel_fgetxattr,
1151         .listxattr_fn = skel_listxattr,
1152         .flistxattr_fn = skel_flistxattr,
1153         .removexattr_fn = skel_removexattr,
1154         .fremovexattr_fn = skel_fremovexattr,
1155         .setxattr_fn = skel_setxattr,
1156         .fsetxattr_fn = skel_fsetxattr,
1157
1158         /* aio operations */
1159         .aio_force_fn = skel_aio_force,
1160
1161         /* durable handle operations */
1162         .durable_cookie_fn = skel_durable_cookie,
1163         .durable_disconnect_fn = skel_durable_disconnect,
1164         .durable_reconnect_fn = skel_durable_reconnect,
1165 };
1166
1167 static_decl_vfs;
1168 NTSTATUS vfs_skel_opaque_init(TALLOC_CTX *ctx)
1169 {
1170         /*
1171          * smb_vfs_assert_all_fns() makes sure every
1172          * call is implemented.
1173          *
1174          * An opaque module requires this!
1175          */
1176         smb_vfs_assert_all_fns(&skel_opaque_fns, "skel_opaque");
1177         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "skel_opaque",
1178                                 &skel_opaque_fns);
1179 }