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 NTSTATUS skel_create_dfs_pathat(struct vfs_handle_struct *handle,
 107                                 struct files_struct *dirfsp,
 108                                 const struct smb_filename *smb_fname,
 109                                 const struct referral *reflist,
 110                                 size_t referral_count)
 111 {
 112         return NT_STATUS_NOT_IMPLEMENTED;
 113 }
 114
 115 static NTSTATUS skel_read_dfs_pathat(struct vfs_handle_struct *handle,
 116                                 TALLOC_CTX *mem_ctx,
 117                                 struct files_struct *dirfsp,
 118                                 struct smb_filename *smb_fname,
 119                                 struct referral **ppreflist,
 120                                 size_t *preferral_count)
 121 {
 122         return NT_STATUS_NOT_IMPLEMENTED;
 123 }
 124
 125 static NTSTATUS skel_snap_check_path(struct vfs_handle_struct *handle,
 126                                      TALLOC_CTX *mem_ctx,
 127                                      const char *service_path,
 128                                      char **base_volume)
 129 {
 130         return NT_STATUS_NOT_SUPPORTED;
 131 }
 132
 133 static NTSTATUS skel_snap_create(struct vfs_handle_struct *handle,
 134                                  TALLOC_CTX *mem_ctx,
 135                                  const char *base_volume,
 136                                  time_t *tstamp,
 137                                  bool rw,
 138                                  char **base_path,
 139                                  char **snap_path)
 140 {
 141         return NT_STATUS_NOT_SUPPORTED;
 142 }
 143
 144 static NTSTATUS skel_snap_delete(struct vfs_handle_struct *handle,
 145                                  TALLOC_CTX *mem_ctx,
 146                                  char *base_path,
 147                                  char *snap_path)
 148 {
 149         return NT_STATUS_NOT_SUPPORTED;
 150 }
 151
 152 static DIR *skel_fdopendir(vfs_handle_struct *handle, files_struct *fsp,
 153                            const char *mask, uint32_t attr)
 154 {
 155         return NULL;
 156 }
 157
 158 static struct dirent *skel_readdir(vfs_handle_struct *handle,
 159                                    struct files_struct *dirfsp,
 160                                    DIR *dirp,
 161                                    SMB_STRUCT_STAT *sbuf)
 162 {
 163         return NULL;
 164 }
 165
 166 static void skel_seekdir(vfs_handle_struct *handle, DIR *dirp, long offset)
 167 {
 168         ;
 169 }
 170
 171 static long skel_telldir(vfs_handle_struct *handle, DIR *dirp)
 172 {
 173         return (long)-1;
 174 }
 175
 176 static void skel_rewind_dir(vfs_handle_struct *handle, DIR *dirp)
 177 {
 178         ;
 179 }
 180
 181 static int skel_mkdirat(vfs_handle_struct *handle,
 182                 struct files_struct *dirfsp,
 183                 const struct smb_filename *smb_fname,
 184                 mode_t mode)
 185 {
 186         errno = ENOSYS;
 187         return -1;
 188 }
 189
 190 static int skel_closedir(vfs_handle_struct *handle, DIR *dir)
 191 {
 192         errno = ENOSYS;
 193         return -1;
 194 }
 195
 196 static int skel_openat(struct vfs_handle_struct *handle,
 197                        const struct files_struct *dirfsp,
 198                        const struct smb_filename *smb_fname,
 199                        struct files_struct *fsp,
 200                        int flags,
 201                        mode_t mode)
 202 {
 203         errno = ENOSYS;
 204         return -1;
 205 }
 206
 207 static NTSTATUS skel_create_file(struct vfs_handle_struct *handle,
 208                                  struct smb_request *req,
 209                                  struct smb_filename *smb_fname,
 210                                  uint32_t access_mask,
 211                                  uint32_t share_access,
 212                                  uint32_t create_disposition,
 213                                  uint32_t create_options,
 214                                  uint32_t file_attributes,
 215                                  uint32_t oplock_request,
 216                                  const struct smb2_lease *lease,
 217                                  uint64_t allocation_size,
 218                                  uint32_t private_flags,
 219                                  struct security_descriptor *sd,
 220                                  struct ea_list *ea_list,
 221                                  files_struct **result, int *pinfo,
 222                                  const struct smb2_create_blobs *in_context_blobs,
 223                                  struct smb2_create_blobs *out_context_blobs)
 224 {
 225         return NT_STATUS_NOT_IMPLEMENTED;
 226 }
 227
 228 static int skel_close_fn(vfs_handle_struct *handle, files_struct *fsp)
 229 {
 230         errno = ENOSYS;
 231         return -1;
 232 }
 233
 234 static ssize_t skel_pread(vfs_handle_struct *handle, files_struct *fsp,
 235                           void *data, size_t n, off_t offset)
 236 {
 237         errno = ENOSYS;
 238         return -1;
 239 }
 240
 241 static struct tevent_req *skel_pread_send(struct vfs_handle_struct *handle,
 242                                           TALLOC_CTX *mem_ctx,
 243                                           struct tevent_context *ev,
 244                                           struct files_struct *fsp,
 245                                           void *data, size_t n, off_t offset)
 246 {
 247         return NULL;
 248 }
 249
 250 static ssize_t skel_pread_recv(struct tevent_req *req,
 251                                struct vfs_aio_state *vfs_aio_state)
 252 {
 253         vfs_aio_state->error = ENOSYS;
 254         return -1;
 255 }
 256
 257 static ssize_t skel_pwrite(vfs_handle_struct *handle, files_struct *fsp,
 258                            const void *data, size_t n, off_t offset)
 259 {
 260         errno = ENOSYS;
 261         return -1;
 262 }
 263
 264 static struct tevent_req *skel_pwrite_send(struct vfs_handle_struct *handle,
 265                                            TALLOC_CTX *mem_ctx,
 266                                            struct tevent_context *ev,
 267                                            struct files_struct *fsp,
 268                                            const void *data,
 269                                            size_t n, off_t offset)
 270 {
 271         return NULL;
 272 }
 273
 274 static ssize_t skel_pwrite_recv(struct tevent_req *req,
 275                                 struct vfs_aio_state *vfs_aio_state)
 276 {
 277         vfs_aio_state->error = ENOSYS;
 278         return -1;
 279 }
 280
 281 static off_t skel_lseek(vfs_handle_struct *handle, files_struct *fsp,
 282                         off_t offset, int whence)
 283 {
 284         errno = ENOSYS;
 285         return (off_t) - 1;
 286 }
 287
 288 static ssize_t skel_sendfile(vfs_handle_struct *handle, int tofd,
 289                              files_struct *fromfsp, const DATA_BLOB *hdr,
 290                              off_t offset, size_t n)
 291 {
 292         errno = ENOSYS;
 293         return -1;
 294 }
 295
 296 static ssize_t skel_recvfile(vfs_handle_struct *handle, int fromfd,
 297                              files_struct *tofsp, off_t offset, size_t n)
 298 {
 299         errno = ENOSYS;
 300         return -1;
 301 }
 302
 303 static int skel_renameat(vfs_handle_struct *handle,
 304                        files_struct *srcfsp,
 305                        const struct smb_filename *smb_fname_src,
 306                        files_struct *dstfsp,
 307                        const struct smb_filename *smb_fname_dst)
 308 {
 309         errno = ENOSYS;
 310         return -1;
 311 }
 312
 313 static struct tevent_req *skel_fsync_send(struct vfs_handle_struct *handle,
 314                                           TALLOC_CTX *mem_ctx,
 315                                           struct tevent_context *ev,
 316                                           struct files_struct *fsp)
 317 {
 318         return NULL;
 319 }
 320
 321 static int skel_fsync_recv(struct tevent_req *req,
 322                            struct vfs_aio_state *vfs_aio_state)
 323 {
 324         vfs_aio_state->error = ENOSYS;
 325         return -1;
 326 }
 327
 328 static int skel_stat(vfs_handle_struct *handle, struct smb_filename *smb_fname)
 329 {
 330         errno = ENOSYS;
 331         return -1;
 332 }
 333
 334 static int skel_fstat(vfs_handle_struct *handle, files_struct *fsp,
 335                       SMB_STRUCT_STAT *sbuf)
 336 {
 337         errno = ENOSYS;
 338         return -1;
 339 }
 340
 341 static int skel_lstat(vfs_handle_struct *handle,
 342                       struct smb_filename *smb_fname)
 343 {
 344         errno = ENOSYS;
 345         return -1;
 346 }
 347
 348 static uint64_t skel_get_alloc_size(struct vfs_handle_struct *handle,
 349                                     struct files_struct *fsp,
 350                                     const SMB_STRUCT_STAT *sbuf)
 351 {
 352         errno = ENOSYS;
 353         return -1;
 354 }
 355
 356 static int skel_unlinkat(vfs_handle_struct *handle,
 357                         struct files_struct *dirfsp,
 358                         const struct smb_filename *smb_fname,
 359                         int flags)
 360 {
 361         errno = ENOSYS;
 362         return -1;
 363 }
 364
 365 static int skel_fchmod(vfs_handle_struct *handle, files_struct *fsp,
 366                        mode_t mode)
 367 {
 368         errno = ENOSYS;
 369         return -1;
 370 }
 371
 372 static int skel_fchown(vfs_handle_struct *handle, files_struct *fsp,
 373                        uid_t uid, gid_t gid)
 374 {
 375         errno = ENOSYS;
 376         return -1;
 377 }
 378
 379 static int skel_lchown(vfs_handle_struct *handle,
 380                         const struct smb_filename *smb_fname,
 381                         uid_t uid,
 382                         gid_t gid)
 383 {
 384         errno = ENOSYS;
 385         return -1;
 386 }
 387
 388 static int skel_chdir(vfs_handle_struct *handle,
 389                         const struct smb_filename *smb_fname)
 390 {
 391         errno = ENOSYS;
 392         return -1;
 393 }
 394
 395 static struct smb_filename *skel_getwd(vfs_handle_struct *handle,
 396                                 TALLOC_CTX *ctx)
 397 {
 398         errno = ENOSYS;
 399         return NULL;
 400 }
 401
 402 static int skel_fntimes(vfs_handle_struct *handle,
 403                         files_struct *fsp,
 404                         struct smb_file_time *ft)
 405 {
 406         errno = ENOSYS;
 407         return -1;
 408 }
 409
 410 static int skel_ftruncate(vfs_handle_struct *handle, files_struct *fsp,
 411                           off_t offset)
 412 {
 413         errno = ENOSYS;
 414         return -1;
 415 }
 416
 417 static int skel_fallocate(vfs_handle_struct *handle, files_struct *fsp,
 418                           uint32_t mode, off_t offset, off_t len)
 419 {
 420         errno = ENOSYS;
 421         return -1;
 422 }
 423
 424 static bool skel_lock(vfs_handle_struct *handle, files_struct *fsp, int op,
 425                       off_t offset, off_t count, int type)
 426 {
 427         errno = ENOSYS;
 428         return false;
 429 }
 430
 431 static int skel_kernel_flock(struct vfs_handle_struct *handle,
 432                              struct files_struct *fsp,
 433                              uint32_t share_mode, uint32_t access_mask)
 434 {
 435         errno = ENOSYS;
 436         return -1;
 437 }
 438
 439 static int skel_fcntl(struct vfs_handle_struct *handle,
 440                       struct files_struct *fsp, int cmd, va_list cmd_arg)
 441 {
 442         errno = ENOSYS;
 443         return -1;
 444 }
 445
 446 static int skel_linux_setlease(struct vfs_handle_struct *handle,
 447                                struct files_struct *fsp, int leasetype)
 448 {
 449         errno = ENOSYS;
 450         return -1;
 451 }
 452
 453 static bool skel_getlock(vfs_handle_struct *handle, files_struct *fsp,
 454                          off_t *poffset, off_t *pcount, int *ptype,
 455                          pid_t *ppid)
 456 {
 457         errno = ENOSYS;
 458         return false;
 459 }
 460
 461 static int skel_symlinkat(vfs_handle_struct *handle,
 462                         const struct smb_filename *link_contents,
 463                         struct files_struct *dirfsp,
 464                         const struct smb_filename *new_smb_fname)
 465 {
 466         errno = ENOSYS;
 467         return -1;
 468 }
 469
 470 static int skel_vfs_readlinkat(vfs_handle_struct *handle,
 471                         const struct files_struct *dirfsp,
 472                         const struct smb_filename *smb_fname,
 473                         char *buf,
 474                         size_t bufsiz)
 475 {
 476         errno = ENOSYS;
 477         return -1;
 478 }
 479
 480 static int skel_linkat(vfs_handle_struct *handle,
 481                         files_struct *srcfsp,
 482                         const struct smb_filename *old_smb_fname,
 483                         files_struct *dstfsp,
 484                         const struct smb_filename *new_smb_fname,
 485                         int flags)
 486 {
 487         errno = ENOSYS;
 488         return -1;
 489 }
 490
 491 static int skel_mknodat(vfs_handle_struct *handle,
 492                         files_struct *dirfsp,
 493                         const struct smb_filename *smb_fname,
 494                         mode_t mode,
 495                         SMB_DEV_T dev)
 496 {
 497         errno = ENOSYS;
 498         return -1;
 499 }
 500
 501 static struct smb_filename *skel_realpath(vfs_handle_struct *handle,
 502                         TALLOC_CTX *ctx,
 503                         const struct smb_filename *smb_fname)
 504 {
 505         errno = ENOSYS;
 506         return NULL;
 507 }
 508
 509 static int skel_chflags(vfs_handle_struct *handle,
 510                         const struct smb_filename *smb_fname,
 511                         uint flags)
 512 {
 513         errno = ENOSYS;
 514         return -1;
 515 }
 516
 517 static struct file_id skel_file_id_create(vfs_handle_struct *handle,
 518                                           const SMB_STRUCT_STAT *sbuf)
 519 {
 520         struct file_id id;
 521         ZERO_STRUCT(id);
 522         errno = ENOSYS;
 523         return id;
 524 }
 525
 526 static uint64_t skel_fs_file_id(vfs_handle_struct *handle,
 527                                 const SMB_STRUCT_STAT *sbuf)
 528 {
 529         errno = ENOSYS;
 530         return 0;
 531 }
 532
 533 struct skel_offload_read_state {
 534         bool dummy;
 535 };
 536
 537 static struct tevent_req *skel_offload_read_send(
 538         TALLOC_CTX *mem_ctx,
 539         struct tevent_context *ev,
 540         struct vfs_handle_struct *handle,
 541         struct files_struct *fsp,
 542         uint32_t fsctl,
 543         uint32_t ttl,
 544         off_t offset,
 545         size_t to_copy)
 546 {
 547         struct tevent_req *req = NULL;
 548         struct skel_offload_read_state *state = NULL;
 549
 550         req = tevent_req_create(mem_ctx, &state, struct skel_offload_read_state);
 551         if (req == NULL) {
 552                 return NULL;
 553         }
 554
 555         tevent_req_nterror(req, NT_STATUS_NOT_IMPLEMENTED);
 556         return tevent_req_post(req, ev);
 557 }
 558
 559 static NTSTATUS skel_offload_read_recv(struct tevent_req *req,
 560                                        struct vfs_handle_struct *handle,
 561                                        TALLOC_CTX *mem_ctx,
 562                                        DATA_BLOB *_token_blob)
 563 {
 564         NTSTATUS status;
 565
 566         if (tevent_req_is_nterror(req, &status)) {
 567                 tevent_req_received(req);
 568                 return status;
 569         }
 570         tevent_req_received(req);
 571
 572         return NT_STATUS_OK;
 573 }
 574
 575 struct skel_cc_state {
 576         uint64_t unused;
 577 };
 578 static struct tevent_req *skel_offload_write_send(struct vfs_handle_struct *handle,
 579                                                TALLOC_CTX *mem_ctx,
 580                                                struct tevent_context *ev,
 581                                                uint32_t fsctl,
 582                                                DATA_BLOB *token,
 583                                                off_t transfer_offset,
 584                                                struct files_struct *dest_fsp,
 585                                                off_t dest_off,
 586                                                off_t num)
 587 {
 588         struct tevent_req *req;
 589         struct skel_cc_state *cc_state;
 590
 591         req = tevent_req_create(mem_ctx, &cc_state, struct skel_cc_state);
 592         if (req == NULL) {
 593                 return NULL;
 594         }
 595
 596         tevent_req_nterror(req, NT_STATUS_NOT_IMPLEMENTED);
 597         return tevent_req_post(req, ev);
 598 }
 599
 600 static NTSTATUS skel_offload_write_recv(struct vfs_handle_struct *handle,
 601                                      struct tevent_req *req,
 602                                      off_t *copied)
 603 {
 604         NTSTATUS status;
 605
 606         if (tevent_req_is_nterror(req, &status)) {
 607                 tevent_req_received(req);
 608                 return status;
 609         }
 610         tevent_req_received(req);
 611
 612         return NT_STATUS_OK;
 613 }
 614
 615 static NTSTATUS skel_fget_compression(struct vfs_handle_struct *handle,
 616                                      TALLOC_CTX *mem_ctx,
 617                                      struct files_struct *fsp,
 618                                      uint16_t *_compression_fmt)
 619 {
 620         return NT_STATUS_INVALID_DEVICE_REQUEST;
 621 }
 622
 623 static NTSTATUS skel_set_compression(struct vfs_handle_struct *handle,
 624                                      TALLOC_CTX *mem_ctx,
 625                                      struct files_struct *fsp,
 626                                      uint16_t compression_fmt)
 627 {
 628         return NT_STATUS_INVALID_DEVICE_REQUEST;
 629 }
 630
 631 static NTSTATUS skel_fstreaminfo(struct vfs_handle_struct *handle,
 632                                  struct files_struct *fsp,
 633                                  TALLOC_CTX *mem_ctx,
 634                                  unsigned int *num_streams,
 635                                  struct stream_struct **streams)
 636 {
 637         return NT_STATUS_NOT_IMPLEMENTED;
 638 }
 639
 640 static int skel_get_real_filename(struct vfs_handle_struct *handle,
 641                                   const struct smb_filename *path,
 642                                   const char *name,
 643                                   TALLOC_CTX *mem_ctx, char **found_name)
 644 {
 645         errno = ENOSYS;
 646         return -1;
 647 }
 648
 649 static const char *skel_connectpath(struct vfs_handle_struct *handle,
 650                                 const struct smb_filename *smb_fname)
 651 {
 652         errno = ENOSYS;
 653         return NULL;
 654 }
 655
 656 static NTSTATUS skel_brl_lock_windows(struct vfs_handle_struct *handle,
 657                                       struct byte_range_lock *br_lck,
 658                                       struct lock_struct *plock)
 659 {
 660         return NT_STATUS_NOT_IMPLEMENTED;
 661 }
 662
 663 static bool skel_brl_unlock_windows(struct vfs_handle_struct *handle,
 664                                     struct byte_range_lock *br_lck,
 665                                     const struct lock_struct *plock)
 666 {
 667         errno = ENOSYS;
 668         return false;
 669 }
 670
 671 static bool skel_strict_lock_check(struct vfs_handle_struct *handle,
 672                                    struct files_struct *fsp,
 673                                    struct lock_struct *plock)
 674 {
 675         errno = ENOSYS;
 676         return false;
 677 }
 678
 679 static NTSTATUS skel_translate_name(struct vfs_handle_struct *handle,
 680                                     const char *mapped_name,
 681                                     enum vfs_translate_direction direction,
 682                                     TALLOC_CTX *mem_ctx, char **pmapped_name)
 683 {
 684         return NT_STATUS_NOT_IMPLEMENTED;
 685 }
 686
 687 static NTSTATUS skel_fsctl(struct vfs_handle_struct *handle,
 688                            struct files_struct *fsp,
 689                            TALLOC_CTX *ctx,
 690                            uint32_t function,
 691                            uint16_t req_flags,  /* Needed for UNICODE ... */
 692                            const uint8_t *_in_data,
 693                            uint32_t in_len,
 694                            uint8_t **_out_data,
 695                            uint32_t max_out_len, uint32_t *out_len)
 696 {
 697         return NT_STATUS_NOT_IMPLEMENTED;
 698 }
 699
 700 static NTSTATUS skel_freaddir_attr(struct vfs_handle_struct *handle,
 701                                    struct files_struct *fsp,
 702                                    TALLOC_CTX *mem_ctx,
 703                                    struct readdir_attr_data **pattr_data)
 704 {
 705         return NT_STATUS_NOT_IMPLEMENTED;
 706 }
 707
 708 struct skel_get_dos_attributes_state {
 709         struct vfs_aio_state aio_state;
 710         uint32_t dosmode;
 711 };
 712
 713 static struct tevent_req *skel_get_dos_attributes_send(
 714                         TALLOC_CTX *mem_ctx,
 715                         struct tevent_context *ev,
 716                         struct vfs_handle_struct *handle,
 717                         files_struct *dir_fsp,
 718                         struct smb_filename *smb_fname)
 719 {
 720         struct tevent_req *req = NULL;
 721         struct skel_get_dos_attributes_state *state = NULL;
 722
 723         req = tevent_req_create(mem_ctx, &state,
 724                                 struct skel_get_dos_attributes_state);
 725         if (req == NULL) {
 726                 return NULL;
 727         }
 728
 729         tevent_req_nterror(req, NT_STATUS_NOT_IMPLEMENTED);
 730         return tevent_req_post(req, ev);
 731 }
 732
 733 static NTSTATUS skel_get_dos_attributes_recv(struct tevent_req *req,
 734                                              struct vfs_aio_state *aio_state,
 735                                              uint32_t *dosmode)
 736 {
 737         struct skel_get_dos_attributes_state *state =
 738                 tevent_req_data(req,
 739                 struct skel_get_dos_attributes_state);
 740         NTSTATUS status;
 741
 742         if (tevent_req_is_nterror(req, &status)) {
 743                 tevent_req_received(req);
 744                 return status;
 745         }
 746
 747         *aio_state = state->aio_state;
 748         *dosmode = state->dosmode;
 749         tevent_req_received(req);
 750         return NT_STATUS_OK;
 751 }
 752
 753 static NTSTATUS skel_fget_dos_attributes(struct vfs_handle_struct *handle,
 754                                 struct files_struct *fsp,
 755                                 uint32_t *dosmode)
 756 {
 757         return NT_STATUS_NOT_IMPLEMENTED;
 758 }
 759
 760 static NTSTATUS skel_fset_dos_attributes(struct vfs_handle_struct *handle,
 761                                 struct files_struct *fsp,
 762                                 uint32_t dosmode)
 763 {
 764         return NT_STATUS_NOT_IMPLEMENTED;
 765 }
 766
 767 static NTSTATUS skel_fget_nt_acl(vfs_handle_struct *handle, files_struct *fsp,
 768                                  uint32_t security_info,
 769                                  TALLOC_CTX *mem_ctx,
 770                                  struct security_descriptor **ppdesc)
 771 {
 772         return NT_STATUS_NOT_IMPLEMENTED;
 773 }
 774
 775 static NTSTATUS skel_get_nt_acl_at(vfs_handle_struct *handle,
 776                                 struct files_struct *dirfsp,
 777                                 const struct smb_filename *smb_fname,
 778                                 uint32_t security_info,
 779                                 TALLOC_CTX *mem_ctx,
 780                                 struct security_descriptor **ppdesc)
 781 {
 782         return NT_STATUS_NOT_IMPLEMENTED;
 783 }
 784
 785 static NTSTATUS skel_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp,
 786                                  uint32_t security_info_sent,
 787                                  const struct security_descriptor *psd)
 788 {
 789         return NT_STATUS_NOT_IMPLEMENTED;
 790 }
 791
 792 static SMB_ACL_T skel_sys_acl_get_file(vfs_handle_struct *handle,
 793                                        const struct smb_filename *smb_fname,
 794                                        SMB_ACL_TYPE_T type,
 795                                        TALLOC_CTX *mem_ctx)
 796 {
 797         errno = ENOSYS;
 798         return (SMB_ACL_T) NULL;
 799 }
 800
 801 static SMB_ACL_T skel_sys_acl_get_fd(vfs_handle_struct *handle,
 802                                      files_struct *fsp, TALLOC_CTX *mem_ctx)
 803 {
 804         errno = ENOSYS;
 805         return (SMB_ACL_T) NULL;
 806 }
 807
 808 static int skel_sys_acl_blob_get_file(vfs_handle_struct *handle,
 809                                 const struct smb_filename *smb_fname,
 810                                 TALLOC_CTX *mem_ctx,
 811                                 char **blob_description,
 812                                 DATA_BLOB *blob)
 813 {
 814         errno = ENOSYS;
 815         return -1;
 816 }
 817
 818 static int skel_sys_acl_blob_get_fd(vfs_handle_struct *handle,
 819                                     files_struct *fsp, TALLOC_CTX *mem_ctx,
 820                                     char **blob_description, DATA_BLOB *blob)
 821 {
 822         errno = ENOSYS;
 823         return -1;
 824 }
 825
 826 static int skel_sys_acl_set_fd(vfs_handle_struct *handle,
 827                                struct files_struct *fsp,
 828                                SMB_ACL_TYPE_T type,
 829                                SMB_ACL_T theacl)
 830 {
 831         errno = ENOSYS;
 832         return -1;
 833 }
 834
 835 static int skel_sys_acl_delete_def_file(vfs_handle_struct *handle,
 836                                         const struct smb_filename *smb_fname)
 837 {
 838         errno = ENOSYS;
 839         return -1;
 840 }
 841
 842 static ssize_t skel_getxattr(vfs_handle_struct *handle,
 843                                 const struct smb_filename *smb_fname,
 844                                 const char *name,
 845                                 void *value,
 846                                 size_t size)
 847 {
 848         errno = ENOSYS;
 849         return -1;
 850 }
 851
 852 struct skel_getxattrat_state {
 853         struct vfs_aio_state aio_state;
 854         ssize_t xattr_size;
 855         uint8_t *xattr_value;
 856 };
 857
 858 static struct tevent_req *skel_getxattrat_send(
 859                         TALLOC_CTX *mem_ctx,
 860                         struct tevent_context *ev,
 861                         struct vfs_handle_struct *handle,
 862                         files_struct *dir_fsp,
 863                         const struct smb_filename *smb_fname,
 864                         const char *xattr_name,
 865                         size_t alloc_hint)
 866 {
 867         struct tevent_req *req = NULL;
 868         struct skel_getxattrat_state *state = NULL;
 869
 870         req = tevent_req_create(mem_ctx, &state,
 871                                 struct skel_getxattrat_state);
 872         if (req == NULL) {
 873                 return NULL;
 874         }
 875
 876         tevent_req_error(req, ENOSYS);
 877         return tevent_req_post(req, ev);
 878 }
 879
 880 static ssize_t skel_getxattrat_recv(struct tevent_req *req,
 881                                     struct vfs_aio_state *aio_state,
 882                                     TALLOC_CTX *mem_ctx,
 883                                     uint8_t **xattr_value)
 884 {
 885         struct skel_getxattrat_state *state = tevent_req_data(
 886                 req, struct skel_getxattrat_state);
 887         ssize_t xattr_size;
 888
 889         if (tevent_req_is_unix_error(req, &aio_state->error)) {
 890                 tevent_req_received(req);
 891                 return -1;
 892         }
 893
 894         *aio_state = state->aio_state;
 895         xattr_size = state->xattr_size;
 896         if (xattr_value != NULL) {
 897                 *xattr_value = talloc_move(mem_ctx, &state->xattr_value);
 898         }
 899
 900         tevent_req_received(req);
 901         return xattr_size;
 902 }
 903
 904 static ssize_t skel_fgetxattr(vfs_handle_struct *handle,
 905                               struct files_struct *fsp, const char *name,
 906                               void *value, size_t size)
 907 {
 908         errno = ENOSYS;
 909         return -1;
 910 }
 911
 912 static ssize_t skel_flistxattr(vfs_handle_struct *handle,
 913                                struct files_struct *fsp, char *list,
 914                                size_t size)
 915 {
 916         errno = ENOSYS;
 917         return -1;
 918 }
 919
 920 static int skel_fremovexattr(vfs_handle_struct *handle,
 921                              struct files_struct *fsp, const char *name)
 922 {
 923         errno = ENOSYS;
 924         return -1;
 925 }
 926
 927 static int skel_fsetxattr(vfs_handle_struct *handle, struct files_struct *fsp,
 928                           const char *name, const void *value, size_t size,
 929                           int flags)
 930 {
 931         errno = ENOSYS;
 932         return -1;
 933 }
 934
 935 static bool skel_aio_force(struct vfs_handle_struct *handle,
 936                            struct files_struct *fsp)
 937 {
 938         errno = ENOSYS;
 939         return false;
 940 }
 941
 942 static NTSTATUS skel_audit_file(struct vfs_handle_struct *handle,
 943                                 struct smb_filename *file,
 944                                 struct security_acl *sacl,
 945                                 uint32_t access_requested,
 946                                 uint32_t access_denied)
 947 {
 948         return NT_STATUS_NOT_IMPLEMENTED;
 949 }
 950
 951 static NTSTATUS skel_durable_cookie(struct vfs_handle_struct *handle,
 952                                     struct files_struct *fsp,
 953                                     TALLOC_CTX *mem_ctx,
 954                                     DATA_BLOB *cookie)
 955 {
 956         return NT_STATUS_NOT_IMPLEMENTED;
 957 }
 958
 959 static NTSTATUS skel_durable_disconnect(struct vfs_handle_struct *handle,
 960                                         struct files_struct *fsp,
 961                                         const DATA_BLOB old_cookie,
 962                                         TALLOC_CTX *mem_ctx,
 963                                         DATA_BLOB *new_cookie)
 964 {
 965         return NT_STATUS_NOT_IMPLEMENTED;
 966 }
 967
 968 static NTSTATUS skel_durable_reconnect(struct vfs_handle_struct *handle,
 969                                        struct smb_request *smb1req,
 970                                        struct smbXsrv_open *op,
 971                                        const DATA_BLOB old_cookie,
 972                                        TALLOC_CTX *mem_ctx,
 973                                        struct files_struct **fsp,
 974                                        DATA_BLOB *new_cookie)
 975 {
 976         return NT_STATUS_NOT_IMPLEMENTED;
 977 }
 978
 979 /* VFS operations structure */
 980
 981 static struct vfs_fn_pointers skel_opaque_fns = {
 982         /* Disk operations */
 983
 984         .connect_fn = skel_connect,
 985         .disconnect_fn = skel_disconnect,
 986         .disk_free_fn = skel_disk_free,
 987         .get_quota_fn = skel_get_quota,
 988         .set_quota_fn = skel_set_quota,
 989         .get_shadow_copy_data_fn = skel_get_shadow_copy_data,
 990         .statvfs_fn = skel_statvfs,
 991         .fs_capabilities_fn = skel_fs_capabilities,
 992         .get_dfs_referrals_fn = skel_get_dfs_referrals,
 993         .create_dfs_pathat_fn = skel_create_dfs_pathat,
 994         .read_dfs_pathat_fn = skel_read_dfs_pathat,
 995         .snap_check_path_fn = skel_snap_check_path,
 996         .snap_create_fn = skel_snap_create,
 997         .snap_delete_fn = skel_snap_delete,
 998
 999         /* Directory operations */
1000
1001         .fdopendir_fn = skel_fdopendir,
1002         .readdir_fn = skel_readdir,
1003         .seekdir_fn = skel_seekdir,
1004         .telldir_fn = skel_telldir,
1005         .rewind_dir_fn = skel_rewind_dir,
1006         .mkdirat_fn = skel_mkdirat,
1007         .closedir_fn = skel_closedir,
1008
1009         /* File operations */
1010
1011         .openat_fn = skel_openat,
1012         .create_file_fn = skel_create_file,
1013         .close_fn = skel_close_fn,
1014         .pread_fn = skel_pread,
1015         .pread_send_fn = skel_pread_send,
1016         .pread_recv_fn = skel_pread_recv,
1017         .pwrite_fn = skel_pwrite,
1018         .pwrite_send_fn = skel_pwrite_send,
1019         .pwrite_recv_fn = skel_pwrite_recv,
1020         .lseek_fn = skel_lseek,
1021         .sendfile_fn = skel_sendfile,
1022         .recvfile_fn = skel_recvfile,
1023         .renameat_fn = skel_renameat,
1024         .fsync_send_fn = skel_fsync_send,
1025         .fsync_recv_fn = skel_fsync_recv,
1026         .stat_fn = skel_stat,
1027         .fstat_fn = skel_fstat,
1028         .lstat_fn = skel_lstat,
1029         .get_alloc_size_fn = skel_get_alloc_size,
1030         .unlinkat_fn = skel_unlinkat,
1031         .fchmod_fn = skel_fchmod,
1032         .fchown_fn = skel_fchown,
1033         .lchown_fn = skel_lchown,
1034         .chdir_fn = skel_chdir,
1035         .getwd_fn = skel_getwd,
1036         .fntimes_fn = skel_fntimes,
1037         .ftruncate_fn = skel_ftruncate,
1038         .fallocate_fn = skel_fallocate,
1039         .lock_fn = skel_lock,
1040         .kernel_flock_fn = skel_kernel_flock,
1041         .fcntl_fn = skel_fcntl,
1042         .linux_setlease_fn = skel_linux_setlease,
1043         .getlock_fn = skel_getlock,
1044         .symlinkat_fn = skel_symlinkat,
1045         .readlinkat_fn = skel_vfs_readlinkat,
1046         .linkat_fn = skel_linkat,
1047         .mknodat_fn = skel_mknodat,
1048         .realpath_fn = skel_realpath,
1049         .chflags_fn = skel_chflags,
1050         .file_id_create_fn = skel_file_id_create,
1051         .fs_file_id_fn = skel_fs_file_id,
1052         .offload_read_send_fn = skel_offload_read_send,
1053         .offload_read_recv_fn = skel_offload_read_recv,
1054         .offload_write_send_fn = skel_offload_write_send,
1055         .offload_write_recv_fn = skel_offload_write_recv,
1056         .fget_compression_fn = skel_fget_compression,
1057         .set_compression_fn = skel_set_compression,
1058
1059         .fstreaminfo_fn = skel_fstreaminfo,
1060         .get_real_filename_fn = skel_get_real_filename,
1061         .connectpath_fn = skel_connectpath,
1062         .brl_lock_windows_fn = skel_brl_lock_windows,
1063         .brl_unlock_windows_fn = skel_brl_unlock_windows,
1064         .strict_lock_check_fn = skel_strict_lock_check,
1065         .translate_name_fn = skel_translate_name,
1066         .fsctl_fn = skel_fsctl,
1067         .freaddir_attr_fn = skel_freaddir_attr,
1068         .audit_file_fn = skel_audit_file,
1069
1070         /* DOS attributes. */
1071         .get_dos_attributes_send_fn = skel_get_dos_attributes_send,
1072         .get_dos_attributes_recv_fn = skel_get_dos_attributes_recv,
1073         .fget_dos_attributes_fn = skel_fget_dos_attributes,
1074         .fset_dos_attributes_fn = skel_fset_dos_attributes,
1075
1076         /* NT ACL operations. */
1077
1078         .fget_nt_acl_fn = skel_fget_nt_acl,
1079         .get_nt_acl_at_fn = skel_get_nt_acl_at,
1080         .fset_nt_acl_fn = skel_fset_nt_acl,
1081
1082         /* POSIX ACL operations. */
1083
1084         .sys_acl_get_file_fn = skel_sys_acl_get_file,
1085         .sys_acl_get_fd_fn = skel_sys_acl_get_fd,
1086         .sys_acl_blob_get_file_fn = skel_sys_acl_blob_get_file,
1087         .sys_acl_blob_get_fd_fn = skel_sys_acl_blob_get_fd,
1088         .sys_acl_set_fd_fn = skel_sys_acl_set_fd,
1089         .sys_acl_delete_def_file_fn = skel_sys_acl_delete_def_file,
1090
1091         /* EA operations. */
1092         .getxattr_fn = skel_getxattr,
1093         .getxattrat_send_fn = skel_getxattrat_send,
1094         .getxattrat_recv_fn = skel_getxattrat_recv,
1095         .fgetxattr_fn = skel_fgetxattr,
1096         .flistxattr_fn = skel_flistxattr,
1097         .fremovexattr_fn = skel_fremovexattr,
1098         .fsetxattr_fn = skel_fsetxattr,
1099
1100         /* aio operations */
1101         .aio_force_fn = skel_aio_force,
1102
1103         /* durable handle operations */
1104         .durable_cookie_fn = skel_durable_cookie,
1105         .durable_disconnect_fn = skel_durable_disconnect,
1106         .durable_reconnect_fn = skel_durable_reconnect,
1107 };
1108
1109 static_decl_vfs;
1110 NTSTATUS vfs_skel_opaque_init(TALLOC_CTX *ctx)
1111 {
1112         /*
1113          * smb_vfs_assert_all_fns() makes sure every
1114          * call is implemented.
1115          *
1116          * An opaque module requires this!
1117          */
1118         smb_vfs_assert_all_fns(&skel_opaque_fns, "skel_opaque");
1119         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "skel_opaque",
1120                                 &skel_opaque_fns);
1121 }