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_chmod(vfs_handle_struct *handle,
 366                         const struct smb_filename *smb_fname,
 367                         mode_t mode)
 368 {
 369         errno = ENOSYS;
 370         return -1;
 371 }
 372
 373 static int skel_fchmod(vfs_handle_struct *handle, files_struct *fsp,
 374                        mode_t mode)
 375 {
 376         errno = ENOSYS;
 377         return -1;
 378 }
 379
 380 static int skel_fchown(vfs_handle_struct *handle, files_struct *fsp,
 381                        uid_t uid, gid_t gid)
 382 {
 383         errno = ENOSYS;
 384         return -1;
 385 }
 386
 387 static int skel_lchown(vfs_handle_struct *handle,
 388                         const struct smb_filename *smb_fname,
 389                         uid_t uid,
 390                         gid_t gid)
 391 {
 392         errno = ENOSYS;
 393         return -1;
 394 }
 395
 396 static int skel_chdir(vfs_handle_struct *handle,
 397                         const struct smb_filename *smb_fname)
 398 {
 399         errno = ENOSYS;
 400         return -1;
 401 }
 402
 403 static struct smb_filename *skel_getwd(vfs_handle_struct *handle,
 404                                 TALLOC_CTX *ctx)
 405 {
 406         errno = ENOSYS;
 407         return NULL;
 408 }
 409
 410 static int skel_ntimes(vfs_handle_struct *handle,
 411                        const struct smb_filename *smb_fname,
 412                        struct smb_file_time *ft)
 413 {
 414         errno = ENOSYS;
 415         return -1;
 416 }
 417
 418 static int skel_ftruncate(vfs_handle_struct *handle, files_struct *fsp,
 419                           off_t offset)
 420 {
 421         errno = ENOSYS;
 422         return -1;
 423 }
 424
 425 static int skel_fallocate(vfs_handle_struct *handle, files_struct *fsp,
 426                           uint32_t mode, off_t offset, off_t len)
 427 {
 428         errno = ENOSYS;
 429         return -1;
 430 }
 431
 432 static bool skel_lock(vfs_handle_struct *handle, files_struct *fsp, int op,
 433                       off_t offset, off_t count, int type)
 434 {
 435         errno = ENOSYS;
 436         return false;
 437 }
 438
 439 static int skel_kernel_flock(struct vfs_handle_struct *handle,
 440                              struct files_struct *fsp,
 441                              uint32_t share_mode, uint32_t access_mask)
 442 {
 443         errno = ENOSYS;
 444         return -1;
 445 }
 446
 447 static int skel_fcntl(struct vfs_handle_struct *handle,
 448                       struct files_struct *fsp, int cmd, va_list cmd_arg)
 449 {
 450         errno = ENOSYS;
 451         return -1;
 452 }
 453
 454 static int skel_linux_setlease(struct vfs_handle_struct *handle,
 455                                struct files_struct *fsp, int leasetype)
 456 {
 457         errno = ENOSYS;
 458         return -1;
 459 }
 460
 461 static bool skel_getlock(vfs_handle_struct *handle, files_struct *fsp,
 462                          off_t *poffset, off_t *pcount, int *ptype,
 463                          pid_t *ppid)
 464 {
 465         errno = ENOSYS;
 466         return false;
 467 }
 468
 469 static int skel_symlinkat(vfs_handle_struct *handle,
 470                         const struct smb_filename *link_contents,
 471                         struct files_struct *dirfsp,
 472                         const struct smb_filename *new_smb_fname)
 473 {
 474         errno = ENOSYS;
 475         return -1;
 476 }
 477
 478 static int skel_vfs_readlinkat(vfs_handle_struct *handle,
 479                         const struct files_struct *dirfsp,
 480                         const struct smb_filename *smb_fname,
 481                         char *buf,
 482                         size_t bufsiz)
 483 {
 484         errno = ENOSYS;
 485         return -1;
 486 }
 487
 488 static int skel_linkat(vfs_handle_struct *handle,
 489                         files_struct *srcfsp,
 490                         const struct smb_filename *old_smb_fname,
 491                         files_struct *dstfsp,
 492                         const struct smb_filename *new_smb_fname,
 493                         int flags)
 494 {
 495         errno = ENOSYS;
 496         return -1;
 497 }
 498
 499 static int skel_mknodat(vfs_handle_struct *handle,
 500                         files_struct *dirfsp,
 501                         const struct smb_filename *smb_fname,
 502                         mode_t mode,
 503                         SMB_DEV_T dev)
 504 {
 505         errno = ENOSYS;
 506         return -1;
 507 }
 508
 509 static struct smb_filename *skel_realpath(vfs_handle_struct *handle,
 510                         TALLOC_CTX *ctx,
 511                         const struct smb_filename *smb_fname)
 512 {
 513         errno = ENOSYS;
 514         return NULL;
 515 }
 516
 517 static int skel_chflags(vfs_handle_struct *handle,
 518                         const struct smb_filename *smb_fname,
 519                         uint flags)
 520 {
 521         errno = ENOSYS;
 522         return -1;
 523 }
 524
 525 static struct file_id skel_file_id_create(vfs_handle_struct *handle,
 526                                           const SMB_STRUCT_STAT *sbuf)
 527 {
 528         struct file_id id;
 529         ZERO_STRUCT(id);
 530         errno = ENOSYS;
 531         return id;
 532 }
 533
 534 static uint64_t skel_fs_file_id(vfs_handle_struct *handle,
 535                                 const SMB_STRUCT_STAT *sbuf)
 536 {
 537         errno = ENOSYS;
 538         return 0;
 539 }
 540
 541 struct skel_offload_read_state {
 542         bool dummy;
 543 };
 544
 545 static struct tevent_req *skel_offload_read_send(
 546         TALLOC_CTX *mem_ctx,
 547         struct tevent_context *ev,
 548         struct vfs_handle_struct *handle,
 549         struct files_struct *fsp,
 550         uint32_t fsctl,
 551         uint32_t ttl,
 552         off_t offset,
 553         size_t to_copy)
 554 {
 555         struct tevent_req *req = NULL;
 556         struct skel_offload_read_state *state = NULL;
 557
 558         req = tevent_req_create(mem_ctx, &state, struct skel_offload_read_state);
 559         if (req == NULL) {
 560                 return NULL;
 561         }
 562
 563         tevent_req_nterror(req, NT_STATUS_NOT_IMPLEMENTED);
 564         return tevent_req_post(req, ev);
 565 }
 566
 567 static NTSTATUS skel_offload_read_recv(struct tevent_req *req,
 568                                        struct vfs_handle_struct *handle,
 569                                        TALLOC_CTX *mem_ctx,
 570                                        DATA_BLOB *_token_blob)
 571 {
 572         NTSTATUS status;
 573
 574         if (tevent_req_is_nterror(req, &status)) {
 575                 tevent_req_received(req);
 576                 return status;
 577         }
 578         tevent_req_received(req);
 579
 580         return NT_STATUS_OK;
 581 }
 582
 583 struct skel_cc_state {
 584         uint64_t unused;
 585 };
 586 static struct tevent_req *skel_offload_write_send(struct vfs_handle_struct *handle,
 587                                                TALLOC_CTX *mem_ctx,
 588                                                struct tevent_context *ev,
 589                                                uint32_t fsctl,
 590                                                DATA_BLOB *token,
 591                                                off_t transfer_offset,
 592                                                struct files_struct *dest_fsp,
 593                                                off_t dest_off,
 594                                                off_t num)
 595 {
 596         struct tevent_req *req;
 597         struct skel_cc_state *cc_state;
 598
 599         req = tevent_req_create(mem_ctx, &cc_state, struct skel_cc_state);
 600         if (req == NULL) {
 601                 return NULL;
 602         }
 603
 604         tevent_req_nterror(req, NT_STATUS_NOT_IMPLEMENTED);
 605         return tevent_req_post(req, ev);
 606 }
 607
 608 static NTSTATUS skel_offload_write_recv(struct vfs_handle_struct *handle,
 609                                      struct tevent_req *req,
 610                                      off_t *copied)
 611 {
 612         NTSTATUS status;
 613
 614         if (tevent_req_is_nterror(req, &status)) {
 615                 tevent_req_received(req);
 616                 return status;
 617         }
 618         tevent_req_received(req);
 619
 620         return NT_STATUS_OK;
 621 }
 622
 623 static NTSTATUS skel_fget_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_set_compression(struct vfs_handle_struct *handle,
 632                                      TALLOC_CTX *mem_ctx,
 633                                      struct files_struct *fsp,
 634                                      uint16_t compression_fmt)
 635 {
 636         return NT_STATUS_INVALID_DEVICE_REQUEST;
 637 }
 638
 639 static NTSTATUS skel_streaminfo(struct vfs_handle_struct *handle,
 640                                 struct files_struct *fsp,
 641                                 const struct smb_filename *smb_fname,
 642                                 TALLOC_CTX *mem_ctx,
 643                                 unsigned int *num_streams,
 644                                 struct stream_struct **streams)
 645 {
 646         return NT_STATUS_NOT_IMPLEMENTED;
 647 }
 648
 649 static int skel_get_real_filename(struct vfs_handle_struct *handle,
 650                                   const struct smb_filename *path,
 651                                   const char *name,
 652                                   TALLOC_CTX *mem_ctx, char **found_name)
 653 {
 654         errno = ENOSYS;
 655         return -1;
 656 }
 657
 658 static const char *skel_connectpath(struct vfs_handle_struct *handle,
 659                                 const struct smb_filename *smb_fname)
 660 {
 661         errno = ENOSYS;
 662         return NULL;
 663 }
 664
 665 static NTSTATUS skel_brl_lock_windows(struct vfs_handle_struct *handle,
 666                                       struct byte_range_lock *br_lck,
 667                                       struct lock_struct *plock)
 668 {
 669         return NT_STATUS_NOT_IMPLEMENTED;
 670 }
 671
 672 static bool skel_brl_unlock_windows(struct vfs_handle_struct *handle,
 673                                     struct byte_range_lock *br_lck,
 674                                     const struct lock_struct *plock)
 675 {
 676         errno = ENOSYS;
 677         return false;
 678 }
 679
 680 static bool skel_strict_lock_check(struct vfs_handle_struct *handle,
 681                                    struct files_struct *fsp,
 682                                    struct lock_struct *plock)
 683 {
 684         errno = ENOSYS;
 685         return false;
 686 }
 687
 688 static NTSTATUS skel_translate_name(struct vfs_handle_struct *handle,
 689                                     const char *mapped_name,
 690                                     enum vfs_translate_direction direction,
 691                                     TALLOC_CTX *mem_ctx, char **pmapped_name)
 692 {
 693         return NT_STATUS_NOT_IMPLEMENTED;
 694 }
 695
 696 static NTSTATUS skel_fsctl(struct vfs_handle_struct *handle,
 697                            struct files_struct *fsp,
 698                            TALLOC_CTX *ctx,
 699                            uint32_t function,
 700                            uint16_t req_flags,  /* Needed for UNICODE ... */
 701                            const uint8_t *_in_data,
 702                            uint32_t in_len,
 703                            uint8_t **_out_data,
 704                            uint32_t max_out_len, uint32_t *out_len)
 705 {
 706         return NT_STATUS_NOT_IMPLEMENTED;
 707 }
 708
 709 static NTSTATUS skel_readdir_attr(struct vfs_handle_struct *handle,
 710                                   const struct smb_filename *fname,
 711                                   TALLOC_CTX *mem_ctx,
 712                                   struct readdir_attr_data **pattr_data)
 713 {
 714         return NT_STATUS_NOT_IMPLEMENTED;
 715 }
 716
 717 struct skel_get_dos_attributes_state {
 718         struct vfs_aio_state aio_state;
 719         uint32_t dosmode;
 720 };
 721
 722 static struct tevent_req *skel_get_dos_attributes_send(
 723                         TALLOC_CTX *mem_ctx,
 724                         struct tevent_context *ev,
 725                         struct vfs_handle_struct *handle,
 726                         files_struct *dir_fsp,
 727                         struct smb_filename *smb_fname)
 728 {
 729         struct tevent_req *req = NULL;
 730         struct skel_get_dos_attributes_state *state = NULL;
 731
 732         req = tevent_req_create(mem_ctx, &state,
 733                                 struct skel_get_dos_attributes_state);
 734         if (req == NULL) {
 735                 return NULL;
 736         }
 737
 738         tevent_req_nterror(req, NT_STATUS_NOT_IMPLEMENTED);
 739         return tevent_req_post(req, ev);
 740 }
 741
 742 static NTSTATUS skel_get_dos_attributes_recv(struct tevent_req *req,
 743                                              struct vfs_aio_state *aio_state,
 744                                              uint32_t *dosmode)
 745 {
 746         struct skel_get_dos_attributes_state *state =
 747                 tevent_req_data(req,
 748                 struct skel_get_dos_attributes_state);
 749         NTSTATUS status;
 750
 751         if (tevent_req_is_nterror(req, &status)) {
 752                 tevent_req_received(req);
 753                 return status;
 754         }
 755
 756         *aio_state = state->aio_state;
 757         *dosmode = state->dosmode;
 758         tevent_req_received(req);
 759         return NT_STATUS_OK;
 760 }
 761
 762 static NTSTATUS skel_fget_dos_attributes(struct vfs_handle_struct *handle,
 763                                 struct files_struct *fsp,
 764                                 uint32_t *dosmode)
 765 {
 766         return NT_STATUS_NOT_IMPLEMENTED;
 767 }
 768
 769 static NTSTATUS skel_fset_dos_attributes(struct vfs_handle_struct *handle,
 770                                 struct files_struct *fsp,
 771                                 uint32_t dosmode)
 772 {
 773         return NT_STATUS_NOT_IMPLEMENTED;
 774 }
 775
 776 static NTSTATUS skel_fget_nt_acl(vfs_handle_struct *handle, files_struct *fsp,
 777                                  uint32_t security_info,
 778                                  TALLOC_CTX *mem_ctx,
 779                                  struct security_descriptor **ppdesc)
 780 {
 781         return NT_STATUS_NOT_IMPLEMENTED;
 782 }
 783
 784 static NTSTATUS skel_get_nt_acl_at(vfs_handle_struct *handle,
 785                                 struct files_struct *dirfsp,
 786                                 const struct smb_filename *smb_fname,
 787                                 uint32_t security_info,
 788                                 TALLOC_CTX *mem_ctx,
 789                                 struct security_descriptor **ppdesc)
 790 {
 791         return NT_STATUS_NOT_IMPLEMENTED;
 792 }
 793
 794 static NTSTATUS skel_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp,
 795                                  uint32_t security_info_sent,
 796                                  const struct security_descriptor *psd)
 797 {
 798         return NT_STATUS_NOT_IMPLEMENTED;
 799 }
 800
 801 static SMB_ACL_T skel_sys_acl_get_file(vfs_handle_struct *handle,
 802                                        const struct smb_filename *smb_fname,
 803                                        SMB_ACL_TYPE_T type,
 804                                        TALLOC_CTX *mem_ctx)
 805 {
 806         errno = ENOSYS;
 807         return (SMB_ACL_T) NULL;
 808 }
 809
 810 static SMB_ACL_T skel_sys_acl_get_fd(vfs_handle_struct *handle,
 811                                      files_struct *fsp, TALLOC_CTX *mem_ctx)
 812 {
 813         errno = ENOSYS;
 814         return (SMB_ACL_T) NULL;
 815 }
 816
 817 static int skel_sys_acl_blob_get_file(vfs_handle_struct *handle,
 818                                 const struct smb_filename *smb_fname,
 819                                 TALLOC_CTX *mem_ctx,
 820                                 char **blob_description,
 821                                 DATA_BLOB *blob)
 822 {
 823         errno = ENOSYS;
 824         return -1;
 825 }
 826
 827 static int skel_sys_acl_blob_get_fd(vfs_handle_struct *handle,
 828                                     files_struct *fsp, TALLOC_CTX *mem_ctx,
 829                                     char **blob_description, DATA_BLOB *blob)
 830 {
 831         errno = ENOSYS;
 832         return -1;
 833 }
 834
 835 static int skel_sys_acl_set_fd(vfs_handle_struct *handle,
 836                                struct files_struct *fsp,
 837                                SMB_ACL_TYPE_T type,
 838                                SMB_ACL_T theacl)
 839 {
 840         errno = ENOSYS;
 841         return -1;
 842 }
 843
 844 static int skel_sys_acl_delete_def_file(vfs_handle_struct *handle,
 845                                         const struct smb_filename *smb_fname)
 846 {
 847         errno = ENOSYS;
 848         return -1;
 849 }
 850
 851 static ssize_t skel_getxattr(vfs_handle_struct *handle,
 852                                 const struct smb_filename *smb_fname,
 853                                 const char *name,
 854                                 void *value,
 855                                 size_t size)
 856 {
 857         errno = ENOSYS;
 858         return -1;
 859 }
 860
 861 struct skel_getxattrat_state {
 862         struct vfs_aio_state aio_state;
 863         ssize_t xattr_size;
 864         uint8_t *xattr_value;
 865 };
 866
 867 static struct tevent_req *skel_getxattrat_send(
 868                         TALLOC_CTX *mem_ctx,
 869                         struct tevent_context *ev,
 870                         struct vfs_handle_struct *handle,
 871                         files_struct *dir_fsp,
 872                         const struct smb_filename *smb_fname,
 873                         const char *xattr_name,
 874                         size_t alloc_hint)
 875 {
 876         struct tevent_req *req = NULL;
 877         struct skel_getxattrat_state *state = NULL;
 878
 879         req = tevent_req_create(mem_ctx, &state,
 880                                 struct skel_getxattrat_state);
 881         if (req == NULL) {
 882                 return NULL;
 883         }
 884
 885         tevent_req_error(req, ENOSYS);
 886         return tevent_req_post(req, ev);
 887 }
 888
 889 static ssize_t skel_getxattrat_recv(struct tevent_req *req,
 890                                     struct vfs_aio_state *aio_state,
 891                                     TALLOC_CTX *mem_ctx,
 892                                     uint8_t **xattr_value)
 893 {
 894         struct skel_getxattrat_state *state = tevent_req_data(
 895                 req, struct skel_getxattrat_state);
 896         ssize_t xattr_size;
 897
 898         if (tevent_req_is_unix_error(req, &aio_state->error)) {
 899                 tevent_req_received(req);
 900                 return -1;
 901         }
 902
 903         *aio_state = state->aio_state;
 904         xattr_size = state->xattr_size;
 905         if (xattr_value != NULL) {
 906                 *xattr_value = talloc_move(mem_ctx, &state->xattr_value);
 907         }
 908
 909         tevent_req_received(req);
 910         return xattr_size;
 911 }
 912
 913 static ssize_t skel_fgetxattr(vfs_handle_struct *handle,
 914                               struct files_struct *fsp, const char *name,
 915                               void *value, size_t size)
 916 {
 917         errno = ENOSYS;
 918         return -1;
 919 }
 920
 921 static ssize_t skel_flistxattr(vfs_handle_struct *handle,
 922                                struct files_struct *fsp, char *list,
 923                                size_t size)
 924 {
 925         errno = ENOSYS;
 926         return -1;
 927 }
 928
 929 static int skel_fremovexattr(vfs_handle_struct *handle,
 930                              struct files_struct *fsp, const char *name)
 931 {
 932         errno = ENOSYS;
 933         return -1;
 934 }
 935
 936 static int skel_fsetxattr(vfs_handle_struct *handle, struct files_struct *fsp,
 937                           const char *name, const void *value, size_t size,
 938                           int flags)
 939 {
 940         errno = ENOSYS;
 941         return -1;
 942 }
 943
 944 static bool skel_aio_force(struct vfs_handle_struct *handle,
 945                            struct files_struct *fsp)
 946 {
 947         errno = ENOSYS;
 948         return false;
 949 }
 950
 951 static NTSTATUS skel_audit_file(struct vfs_handle_struct *handle,
 952                                 struct smb_filename *file,
 953                                 struct security_acl *sacl,
 954                                 uint32_t access_requested,
 955                                 uint32_t access_denied)
 956 {
 957         return NT_STATUS_NOT_IMPLEMENTED;
 958 }
 959
 960 static NTSTATUS skel_durable_cookie(struct vfs_handle_struct *handle,
 961                                     struct files_struct *fsp,
 962                                     TALLOC_CTX *mem_ctx,
 963                                     DATA_BLOB *cookie)
 964 {
 965         return NT_STATUS_NOT_IMPLEMENTED;
 966 }
 967
 968 static NTSTATUS skel_durable_disconnect(struct vfs_handle_struct *handle,
 969                                         struct files_struct *fsp,
 970                                         const DATA_BLOB old_cookie,
 971                                         TALLOC_CTX *mem_ctx,
 972                                         DATA_BLOB *new_cookie)
 973 {
 974         return NT_STATUS_NOT_IMPLEMENTED;
 975 }
 976
 977 static NTSTATUS skel_durable_reconnect(struct vfs_handle_struct *handle,
 978                                        struct smb_request *smb1req,
 979                                        struct smbXsrv_open *op,
 980                                        const DATA_BLOB old_cookie,
 981                                        TALLOC_CTX *mem_ctx,
 982                                        struct files_struct **fsp,
 983                                        DATA_BLOB *new_cookie)
 984 {
 985         return NT_STATUS_NOT_IMPLEMENTED;
 986 }
 987
 988 /* VFS operations structure */
 989
 990 static struct vfs_fn_pointers skel_opaque_fns = {
 991         /* Disk operations */
 992
 993         .connect_fn = skel_connect,
 994         .disconnect_fn = skel_disconnect,
 995         .disk_free_fn = skel_disk_free,
 996         .get_quota_fn = skel_get_quota,
 997         .set_quota_fn = skel_set_quota,
 998         .get_shadow_copy_data_fn = skel_get_shadow_copy_data,
 999         .statvfs_fn = skel_statvfs,
1000         .fs_capabilities_fn = skel_fs_capabilities,
1001         .get_dfs_referrals_fn = skel_get_dfs_referrals,
1002         .create_dfs_pathat_fn = skel_create_dfs_pathat,
1003         .read_dfs_pathat_fn = skel_read_dfs_pathat,
1004         .snap_check_path_fn = skel_snap_check_path,
1005         .snap_create_fn = skel_snap_create,
1006         .snap_delete_fn = skel_snap_delete,
1007
1008         /* Directory operations */
1009
1010         .fdopendir_fn = skel_fdopendir,
1011         .readdir_fn = skel_readdir,
1012         .seekdir_fn = skel_seekdir,
1013         .telldir_fn = skel_telldir,
1014         .rewind_dir_fn = skel_rewind_dir,
1015         .mkdirat_fn = skel_mkdirat,
1016         .closedir_fn = skel_closedir,
1017
1018         /* File operations */
1019
1020         .openat_fn = skel_openat,
1021         .create_file_fn = skel_create_file,
1022         .close_fn = skel_close_fn,
1023         .pread_fn = skel_pread,
1024         .pread_send_fn = skel_pread_send,
1025         .pread_recv_fn = skel_pread_recv,
1026         .pwrite_fn = skel_pwrite,
1027         .pwrite_send_fn = skel_pwrite_send,
1028         .pwrite_recv_fn = skel_pwrite_recv,
1029         .lseek_fn = skel_lseek,
1030         .sendfile_fn = skel_sendfile,
1031         .recvfile_fn = skel_recvfile,
1032         .renameat_fn = skel_renameat,
1033         .fsync_send_fn = skel_fsync_send,
1034         .fsync_recv_fn = skel_fsync_recv,
1035         .stat_fn = skel_stat,
1036         .fstat_fn = skel_fstat,
1037         .lstat_fn = skel_lstat,
1038         .get_alloc_size_fn = skel_get_alloc_size,
1039         .unlinkat_fn = skel_unlinkat,
1040         .chmod_fn = skel_chmod,
1041         .fchmod_fn = skel_fchmod,
1042         .fchown_fn = skel_fchown,
1043         .lchown_fn = skel_lchown,
1044         .chdir_fn = skel_chdir,
1045         .getwd_fn = skel_getwd,
1046         .ntimes_fn = skel_ntimes,
1047         .ftruncate_fn = skel_ftruncate,
1048         .fallocate_fn = skel_fallocate,
1049         .lock_fn = skel_lock,
1050         .kernel_flock_fn = skel_kernel_flock,
1051         .fcntl_fn = skel_fcntl,
1052         .linux_setlease_fn = skel_linux_setlease,
1053         .getlock_fn = skel_getlock,
1054         .symlinkat_fn = skel_symlinkat,
1055         .readlinkat_fn = skel_vfs_readlinkat,
1056         .linkat_fn = skel_linkat,
1057         .mknodat_fn = skel_mknodat,
1058         .realpath_fn = skel_realpath,
1059         .chflags_fn = skel_chflags,
1060         .file_id_create_fn = skel_file_id_create,
1061         .fs_file_id_fn = skel_fs_file_id,
1062         .offload_read_send_fn = skel_offload_read_send,
1063         .offload_read_recv_fn = skel_offload_read_recv,
1064         .offload_write_send_fn = skel_offload_write_send,
1065         .offload_write_recv_fn = skel_offload_write_recv,
1066         .fget_compression_fn = skel_fget_compression,
1067         .set_compression_fn = skel_set_compression,
1068
1069         .streaminfo_fn = skel_streaminfo,
1070         .get_real_filename_fn = skel_get_real_filename,
1071         .connectpath_fn = skel_connectpath,
1072         .brl_lock_windows_fn = skel_brl_lock_windows,
1073         .brl_unlock_windows_fn = skel_brl_unlock_windows,
1074         .strict_lock_check_fn = skel_strict_lock_check,
1075         .translate_name_fn = skel_translate_name,
1076         .fsctl_fn = skel_fsctl,
1077         .readdir_attr_fn = skel_readdir_attr,
1078         .audit_file_fn = skel_audit_file,
1079
1080         /* DOS attributes. */
1081         .get_dos_attributes_send_fn = skel_get_dos_attributes_send,
1082         .get_dos_attributes_recv_fn = skel_get_dos_attributes_recv,
1083         .fget_dos_attributes_fn = skel_fget_dos_attributes,
1084         .fset_dos_attributes_fn = skel_fset_dos_attributes,
1085
1086         /* NT ACL operations. */
1087
1088         .fget_nt_acl_fn = skel_fget_nt_acl,
1089         .get_nt_acl_at_fn = skel_get_nt_acl_at,
1090         .fset_nt_acl_fn = skel_fset_nt_acl,
1091
1092         /* POSIX ACL operations. */
1093
1094         .sys_acl_get_file_fn = skel_sys_acl_get_file,
1095         .sys_acl_get_fd_fn = skel_sys_acl_get_fd,
1096         .sys_acl_blob_get_file_fn = skel_sys_acl_blob_get_file,
1097         .sys_acl_blob_get_fd_fn = skel_sys_acl_blob_get_fd,
1098         .sys_acl_set_fd_fn = skel_sys_acl_set_fd,
1099         .sys_acl_delete_def_file_fn = skel_sys_acl_delete_def_file,
1100
1101         /* EA operations. */
1102         .getxattr_fn = skel_getxattr,
1103         .getxattrat_send_fn = skel_getxattrat_send,
1104         .getxattrat_recv_fn = skel_getxattrat_recv,
1105         .fgetxattr_fn = skel_fgetxattr,
1106         .flistxattr_fn = skel_flistxattr,
1107         .fremovexattr_fn = skel_fremovexattr,
1108         .fsetxattr_fn = skel_fsetxattr,
1109
1110         /* aio operations */
1111         .aio_force_fn = skel_aio_force,
1112
1113         /* durable handle operations */
1114         .durable_cookie_fn = skel_durable_cookie,
1115         .durable_disconnect_fn = skel_durable_disconnect,
1116         .durable_reconnect_fn = skel_durable_reconnect,
1117 };
1118
1119 static_decl_vfs;
1120 NTSTATUS vfs_skel_opaque_init(TALLOC_CTX *ctx)
1121 {
1122         /*
1123          * smb_vfs_assert_all_fns() makes sure every
1124          * call is implemented.
1125          *
1126          * An opaque module requires this!
1127          */
1128         smb_vfs_assert_all_fns(&skel_opaque_fns, "skel_opaque");
1129         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "skel_opaque",
1130                                 &skel_opaque_fns);
1131 }