examples/VFS/skel_transparent.c

   1 /*
   2  * Skeleton VFS module.  Implements passthrough operation of all VFS
   3  * calls to disk 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  * please make sure that you remove all skel_XXX() functions you don't
  34  * want to implement!! The passthrough operations are not
  35  * necessary in a real module.
  36  *
  37  * --metze
  38  */
  39
  40 static int skel_connect(vfs_handle_struct *handle, const char *service,
  41                         const char *user)
  42 {
  43         return SMB_VFS_NEXT_CONNECT(handle, service, user);
  44 }
  45
  46 static void skel_disconnect(vfs_handle_struct *handle)
  47 {
  48         SMB_VFS_NEXT_DISCONNECT(handle);
  49 }
  50
  51 static uint64_t skel_disk_free(vfs_handle_struct *handle,
  52                                 const struct smb_filename *smb_fname,
  53                                 uint64_t *bsize,
  54                                 uint64_t *dfree,
  55                                 uint64_t *dsize)
  56 {
  57         return SMB_VFS_NEXT_DISK_FREE(handle, smb_fname, bsize, dfree, dsize);
  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         return SMB_VFS_NEXT_GET_QUOTA(handle, smb_fname, qtype, id, dq);
  67 }
  68
  69 static int skel_set_quota(vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype,
  70                           unid_t id, SMB_DISK_QUOTA *dq)
  71 {
  72         return SMB_VFS_NEXT_SET_QUOTA(handle, qtype, id, dq);
  73 }
  74
  75 static int skel_get_shadow_copy_data(vfs_handle_struct *handle,
  76                                      files_struct *fsp,
  77                                      struct shadow_copy_data *shadow_copy_data,
  78                                      bool labels)
  79 {
  80         return SMB_VFS_NEXT_GET_SHADOW_COPY_DATA(handle, fsp, shadow_copy_data,
  81                                                  labels);
  82 }
  83
  84 static int skel_statvfs(struct vfs_handle_struct *handle,
  85                         const struct smb_filename *smb_fname,
  86                         struct vfs_statvfs_struct *statbuf)
  87 {
  88         return SMB_VFS_NEXT_STATVFS(handle, smb_fname, statbuf);
  89 }
  90
  91 static uint32_t skel_fs_capabilities(struct vfs_handle_struct *handle,
  92                                      enum timestamp_set_resolution *p_ts_res)
  93 {
  94         return SMB_VFS_NEXT_FS_CAPABILITIES(handle, p_ts_res);
  95 }
  96
  97 static NTSTATUS skel_get_dfs_referrals(struct vfs_handle_struct *handle,
  98                                        struct dfs_GetDFSReferral *r)
  99 {
 100         return SMB_VFS_NEXT_GET_DFS_REFERRALS(handle, r);
 101 }
 102
 103 static NTSTATUS skel_create_dfs_pathat(struct vfs_handle_struct *handle,
 104                                 struct files_struct *dirfsp,
 105                                 const struct smb_filename *smb_fname,
 106                                 const struct referral *reflist,
 107                                 size_t referral_count)
 108 {
 109         return SMB_VFS_NEXT_CREATE_DFS_PATHAT(handle,
 110                                         dirfsp,
 111                                         smb_fname,
 112                                         reflist,
 113                                         referral_count);
 114 }
 115
 116 static NTSTATUS skel_read_dfs_pathat(struct vfs_handle_struct *handle,
 117                                 TALLOC_CTX *mem_ctx,
 118                                 struct files_struct *dirfsp,
 119                                 struct smb_filename *smb_fname,
 120                                 struct referral **ppreflist,
 121                                 size_t *preferral_count)
 122 {
 123         return SMB_VFS_NEXT_READ_DFS_PATHAT(handle,
 124                                         mem_ctx,
 125                                         dirfsp,
 126                                         smb_fname,
 127                                         ppreflist,
 128                                         preferral_count);
 129 }
 130
 131 static NTSTATUS skel_snap_check_path(struct vfs_handle_struct *handle,
 132                                      TALLOC_CTX *mem_ctx,
 133                                      const char *service_path,
 134                                      char **base_volume)
 135 {
 136         return SMB_VFS_NEXT_SNAP_CHECK_PATH(handle, mem_ctx, service_path,
 137                                             base_volume);
 138 }
 139
 140 static NTSTATUS skel_snap_create(struct vfs_handle_struct *handle,
 141                                  TALLOC_CTX *mem_ctx,
 142                                  const char *base_volume,
 143                                  time_t *tstamp,
 144                                  bool rw,
 145                                  char **base_path,
 146                                  char **snap_path)
 147 {
 148         return SMB_VFS_NEXT_SNAP_CREATE(handle, mem_ctx, base_volume, tstamp,
 149                                         rw, base_path, snap_path);
 150 }
 151
 152 static NTSTATUS skel_snap_delete(struct vfs_handle_struct *handle,
 153                                  TALLOC_CTX *mem_ctx,
 154                                  char *base_path,
 155                                  char *snap_path)
 156 {
 157         return SMB_VFS_NEXT_SNAP_DELETE(handle, mem_ctx, base_path, snap_path);
 158 }
 159
 160 static DIR *skel_fdopendir(vfs_handle_struct *handle, files_struct *fsp,
 161                            const char *mask, uint32_t attr)
 162 {
 163         return SMB_VFS_NEXT_FDOPENDIR(handle, fsp, mask, attr);
 164 }
 165
 166 static struct dirent *skel_readdir(vfs_handle_struct *handle,
 167                                    DIR *dirp, SMB_STRUCT_STAT *sbuf)
 168 {
 169         return SMB_VFS_NEXT_READDIR(handle, dirp, sbuf);
 170 }
 171
 172 static void skel_seekdir(vfs_handle_struct *handle, DIR *dirp, long offset)
 173 {
 174         SMB_VFS_NEXT_SEEKDIR(handle, dirp, offset);
 175 }
 176
 177 static long skel_telldir(vfs_handle_struct *handle, DIR *dirp)
 178 {
 179         return SMB_VFS_NEXT_TELLDIR(handle, dirp);
 180 }
 181
 182 static void skel_rewind_dir(vfs_handle_struct *handle, DIR *dirp)
 183 {
 184         SMB_VFS_NEXT_REWINDDIR(handle, dirp);
 185 }
 186
 187 static int skel_mkdirat(vfs_handle_struct *handle,
 188                 struct files_struct *dirfsp,
 189                 const struct smb_filename *smb_fname,
 190                 mode_t mode)
 191 {
 192         return SMB_VFS_NEXT_MKDIRAT(handle,
 193                         dirfsp,
 194                         smb_fname,
 195                         mode);
 196 }
 197
 198 static int skel_closedir(vfs_handle_struct *handle, DIR *dir)
 199 {
 200         return SMB_VFS_NEXT_CLOSEDIR(handle, dir);
 201 }
 202
 203 static int skel_openat(struct vfs_handle_struct *handle,
 204                        const struct files_struct *dirfsp,
 205                        const struct smb_filename *smb_fname,
 206                        struct files_struct *fsp,
 207                        int flags,
 208                        mode_t mode)
 209 {
 210         return SMB_VFS_NEXT_OPENAT(handle, dirfsp, smb_fname, fsp, flags, mode);
 211 }
 212
 213 static NTSTATUS skel_create_file(struct vfs_handle_struct *handle,
 214                                  struct smb_request *req,
 215                                  struct smb_filename *smb_fname,
 216                                  uint32_t access_mask,
 217                                  uint32_t share_access,
 218                                  uint32_t create_disposition,
 219                                  uint32_t create_options,
 220                                  uint32_t file_attributes,
 221                                  uint32_t oplock_request,
 222                                  const struct smb2_lease *lease,
 223                                  uint64_t allocation_size,
 224                                  uint32_t private_flags,
 225                                  struct security_descriptor *sd,
 226                                  struct ea_list *ea_list,
 227                                  files_struct ** result, int *pinfo,
 228                                  const struct smb2_create_blobs *in_context_blobs,
 229                                  struct smb2_create_blobs *out_context_blobs)
 230 {
 231         return SMB_VFS_NEXT_CREATE_FILE(handle,
 232                                         req,
 233                                         smb_fname,
 234                                         access_mask,
 235                                         share_access,
 236                                         create_disposition,
 237                                         create_options,
 238                                         file_attributes,
 239                                         oplock_request,
 240                                         lease,
 241                                         allocation_size,
 242                                         private_flags,
 243                                         sd, ea_list, result, pinfo,
 244                                         in_context_blobs, out_context_blobs);
 245 }
 246
 247 static int skel_close_fn(vfs_handle_struct *handle, files_struct *fsp)
 248 {
 249         return SMB_VFS_NEXT_CLOSE(handle, fsp);
 250 }
 251
 252 static ssize_t skel_pread(vfs_handle_struct *handle, files_struct *fsp,
 253                           void *data, size_t n, off_t offset)
 254 {
 255         return SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
 256 }
 257
 258 struct skel_pread_state {
 259         ssize_t ret;
 260         struct vfs_aio_state vfs_aio_state;
 261 };
 262
 263 static void skel_pread_done(struct tevent_req *subreq);
 264
 265 static struct tevent_req *skel_pread_send(struct vfs_handle_struct *handle,
 266                                           TALLOC_CTX *mem_ctx,
 267                                           struct tevent_context *ev,
 268                                           struct files_struct *fsp,
 269                                           void *data, size_t n, off_t offset)
 270 {
 271         struct tevent_req *req, *subreq;
 272         struct skel_pread_state *state;
 273
 274         req = tevent_req_create(mem_ctx, &state, struct skel_pread_state);
 275         if (req == NULL) {
 276                 return NULL;
 277         }
 278         subreq = SMB_VFS_NEXT_PREAD_SEND(state, ev, handle, fsp, data,
 279                                          n, offset);
 280         if (tevent_req_nomem(subreq, req)) {
 281                 return tevent_req_post(req, ev);
 282         }
 283         tevent_req_set_callback(subreq, skel_pread_done, req);
 284         return req;
 285 }
 286
 287 static void skel_pread_done(struct tevent_req *subreq)
 288 {
 289         struct tevent_req *req =
 290             tevent_req_callback_data(subreq, struct tevent_req);
 291         struct skel_pread_state *state =
 292             tevent_req_data(req, struct skel_pread_state);
 293
 294         state->ret = SMB_VFS_PREAD_RECV(subreq, &state->vfs_aio_state);
 295         TALLOC_FREE(subreq);
 296         tevent_req_done(req);
 297 }
 298
 299 static ssize_t skel_pread_recv(struct tevent_req *req,
 300                                struct vfs_aio_state *vfs_aio_state)
 301 {
 302         struct skel_pread_state *state =
 303             tevent_req_data(req, struct skel_pread_state);
 304
 305         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
 306                 return -1;
 307         }
 308         *vfs_aio_state = state->vfs_aio_state;
 309         return state->ret;
 310 }
 311
 312 static ssize_t skel_pwrite(vfs_handle_struct *handle, files_struct *fsp,
 313                            const void *data, size_t n, off_t offset)
 314 {
 315         return SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
 316 }
 317
 318 struct skel_pwrite_state {
 319         ssize_t ret;
 320         struct vfs_aio_state vfs_aio_state;
 321 };
 322
 323 static void skel_pwrite_done(struct tevent_req *subreq);
 324
 325 static struct tevent_req *skel_pwrite_send(struct vfs_handle_struct *handle,
 326                                            TALLOC_CTX *mem_ctx,
 327                                            struct tevent_context *ev,
 328                                            struct files_struct *fsp,
 329                                            const void *data,
 330                                            size_t n, off_t offset)
 331 {
 332         struct tevent_req *req, *subreq;
 333         struct skel_pwrite_state *state;
 334
 335         req = tevent_req_create(mem_ctx, &state, struct skel_pwrite_state);
 336         if (req == NULL) {
 337                 return NULL;
 338         }
 339         subreq = SMB_VFS_NEXT_PWRITE_SEND(state, ev, handle, fsp, data,
 340                                           n, offset);
 341         if (tevent_req_nomem(subreq, req)) {
 342                 return tevent_req_post(req, ev);
 343         }
 344         tevent_req_set_callback(subreq, skel_pwrite_done, req);
 345         return req;
 346 }
 347
 348 static void skel_pwrite_done(struct tevent_req *subreq)
 349 {
 350         struct tevent_req *req =
 351             tevent_req_callback_data(subreq, struct tevent_req);
 352         struct skel_pwrite_state *state =
 353             tevent_req_data(req, struct skel_pwrite_state);
 354
 355         state->ret = SMB_VFS_PWRITE_RECV(subreq, &state->vfs_aio_state);
 356         TALLOC_FREE(subreq);
 357         tevent_req_done(req);
 358 }
 359
 360 static ssize_t skel_pwrite_recv(struct tevent_req *req,
 361                                 struct vfs_aio_state *vfs_aio_state)
 362 {
 363         struct skel_pwrite_state *state =
 364             tevent_req_data(req, struct skel_pwrite_state);
 365
 366         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
 367                 return -1;
 368         }
 369         *vfs_aio_state = state->vfs_aio_state;
 370         return state->ret;
 371 }
 372
 373 static off_t skel_lseek(vfs_handle_struct *handle, files_struct *fsp,
 374                         off_t offset, int whence)
 375 {
 376         return SMB_VFS_NEXT_LSEEK(handle, fsp, offset, whence);
 377 }
 378
 379 static ssize_t skel_sendfile(vfs_handle_struct *handle, int tofd,
 380                              files_struct *fromfsp, const DATA_BLOB *hdr,
 381                              off_t offset, size_t n)
 382 {
 383         return SMB_VFS_NEXT_SENDFILE(handle, tofd, fromfsp, hdr, offset, n);
 384 }
 385
 386 static ssize_t skel_recvfile(vfs_handle_struct *handle, int fromfd,
 387                              files_struct *tofsp, off_t offset, size_t n)
 388 {
 389         return SMB_VFS_NEXT_RECVFILE(handle, fromfd, tofsp, offset, n);
 390 }
 391
 392 static int skel_renameat(vfs_handle_struct *handle,
 393                        files_struct *srcfsp,
 394                        const struct smb_filename *smb_fname_src,
 395                        files_struct *dstfsp,
 396                        const struct smb_filename *smb_fname_dst)
 397 {
 398         return SMB_VFS_NEXT_RENAMEAT(handle,
 399                         srcfsp,
 400                         smb_fname_src,
 401                         dstfsp,
 402                         smb_fname_dst);
 403 }
 404
 405 struct skel_fsync_state {
 406         int ret;
 407         struct vfs_aio_state vfs_aio_state;
 408 };
 409
 410 static void skel_fsync_done(struct tevent_req *subreq);
 411
 412 static struct tevent_req *skel_fsync_send(struct vfs_handle_struct *handle,
 413                                           TALLOC_CTX *mem_ctx,
 414                                           struct tevent_context *ev,
 415                                           struct files_struct *fsp)
 416 {
 417         struct tevent_req *req, *subreq;
 418         struct skel_fsync_state *state;
 419
 420         req = tevent_req_create(mem_ctx, &state, struct skel_fsync_state);
 421         if (req == NULL) {
 422                 return NULL;
 423         }
 424         subreq = SMB_VFS_NEXT_FSYNC_SEND(state, ev, handle, fsp);
 425         if (tevent_req_nomem(subreq, req)) {
 426                 return tevent_req_post(req, ev);
 427         }
 428         tevent_req_set_callback(subreq, skel_fsync_done, req);
 429         return req;
 430 }
 431
 432 static void skel_fsync_done(struct tevent_req *subreq)
 433 {
 434         struct tevent_req *req =
 435             tevent_req_callback_data(subreq, struct tevent_req);
 436         struct skel_fsync_state *state =
 437             tevent_req_data(req, struct skel_fsync_state);
 438
 439         state->ret = SMB_VFS_FSYNC_RECV(subreq, &state->vfs_aio_state);
 440         TALLOC_FREE(subreq);
 441         tevent_req_done(req);
 442 }
 443
 444 static int skel_fsync_recv(struct tevent_req *req,
 445                            struct vfs_aio_state *vfs_aio_state)
 446 {
 447         struct skel_fsync_state *state =
 448             tevent_req_data(req, struct skel_fsync_state);
 449
 450         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
 451                 return -1;
 452         }
 453         *vfs_aio_state = state->vfs_aio_state;
 454         return state->ret;
 455 }
 456
 457 static int skel_stat(vfs_handle_struct *handle, struct smb_filename *smb_fname)
 458 {
 459         return SMB_VFS_NEXT_STAT(handle, smb_fname);
 460 }
 461
 462 static int skel_fstat(vfs_handle_struct *handle, files_struct *fsp,
 463                       SMB_STRUCT_STAT *sbuf)
 464 {
 465         return SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf);
 466 }
 467
 468 static int skel_lstat(vfs_handle_struct *handle,
 469                       struct smb_filename *smb_fname)
 470 {
 471         return SMB_VFS_NEXT_LSTAT(handle, smb_fname);
 472 }
 473
 474 static uint64_t skel_get_alloc_size(struct vfs_handle_struct *handle,
 475                                     struct files_struct *fsp,
 476                                     const SMB_STRUCT_STAT *sbuf)
 477 {
 478         return SMB_VFS_NEXT_GET_ALLOC_SIZE(handle, fsp, sbuf);
 479 }
 480
 481 static int skel_unlinkat(vfs_handle_struct *handle,
 482                         struct files_struct *dirfsp,
 483                         const struct smb_filename *smb_fname,
 484                         int flags)
 485 {
 486         return SMB_VFS_NEXT_UNLINKAT(handle,
 487                         dirfsp,
 488                         smb_fname,
 489                         flags);
 490 }
 491
 492 static int skel_chmod(vfs_handle_struct *handle,
 493                         const struct smb_filename *smb_fname,
 494                         mode_t mode)
 495 {
 496         return SMB_VFS_NEXT_CHMOD(handle, smb_fname, mode);
 497 }
 498
 499 static int skel_fchmod(vfs_handle_struct *handle, files_struct *fsp,
 500                        mode_t mode)
 501 {
 502         return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
 503 }
 504
 505 static int skel_fchown(vfs_handle_struct *handle, files_struct *fsp,
 506                        uid_t uid, gid_t gid)
 507 {
 508         return SMB_VFS_NEXT_FCHOWN(handle, fsp, uid, gid);
 509 }
 510
 511 static int skel_lchown(vfs_handle_struct *handle,
 512                         const struct smb_filename *smb_fname,
 513                         uid_t uid,
 514                         gid_t gid)
 515 {
 516         return SMB_VFS_NEXT_LCHOWN(handle, smb_fname, uid, gid);
 517 }
 518
 519 static int skel_chdir(vfs_handle_struct *handle,
 520                         const struct smb_filename *smb_fname)
 521 {
 522         return SMB_VFS_NEXT_CHDIR(handle, smb_fname);
 523 }
 524
 525 static struct smb_filename *skel_getwd(vfs_handle_struct *handle,
 526                                         TALLOC_CTX *ctx)
 527 {
 528         return SMB_VFS_NEXT_GETWD(handle, ctx);
 529 }
 530
 531 static int skel_ntimes(vfs_handle_struct *handle,
 532                        const struct smb_filename *smb_fname,
 533                        struct smb_file_time *ft)
 534 {
 535         return SMB_VFS_NEXT_NTIMES(handle, smb_fname, ft);
 536 }
 537
 538 static int skel_ftruncate(vfs_handle_struct *handle, files_struct *fsp,
 539                           off_t offset)
 540 {
 541         return SMB_VFS_NEXT_FTRUNCATE(handle, fsp, offset);
 542 }
 543
 544 static int skel_fallocate(vfs_handle_struct *handle, files_struct *fsp,
 545                           uint32_t mode, off_t offset, off_t len)
 546 {
 547         return SMB_VFS_NEXT_FALLOCATE(handle, fsp, mode, offset, len);
 548 }
 549
 550 static bool skel_lock(vfs_handle_struct *handle, files_struct *fsp, int op,
 551                       off_t offset, off_t count, int type)
 552 {
 553         return SMB_VFS_NEXT_LOCK(handle, fsp, op, offset, count, type);
 554 }
 555
 556 static int skel_kernel_flock(struct vfs_handle_struct *handle,
 557                              struct files_struct *fsp, uint32_t share_mode,
 558                              uint32_t access_mask)
 559 {
 560         return SMB_VFS_NEXT_KERNEL_FLOCK(handle, fsp, share_mode, access_mask);
 561 }
 562
 563 static int skel_fcntl(struct vfs_handle_struct *handle,
 564                       struct files_struct *fsp, int cmd, va_list cmd_arg)
 565 {
 566         void *arg;
 567         va_list dup_cmd_arg;
 568         int result;
 569
 570         va_copy(dup_cmd_arg, cmd_arg);
 571         arg = va_arg(dup_cmd_arg, void *);
 572         result = SMB_VFS_NEXT_FCNTL(handle, fsp, cmd, arg);
 573         va_end(dup_cmd_arg);
 574
 575         return result;
 576 }
 577
 578 static int skel_linux_setlease(struct vfs_handle_struct *handle,
 579                                struct files_struct *fsp, int leasetype)
 580 {
 581         return SMB_VFS_NEXT_LINUX_SETLEASE(handle, fsp, leasetype);
 582 }
 583
 584 static bool skel_getlock(vfs_handle_struct *handle, files_struct *fsp,
 585                          off_t *poffset, off_t *pcount, int *ptype,
 586                          pid_t *ppid)
 587 {
 588         return SMB_VFS_NEXT_GETLOCK(handle, fsp, poffset, pcount, ptype, ppid);
 589 }
 590
 591 static int skel_symlinkat(vfs_handle_struct *handle,
 592                         const struct smb_filename *link_contents,
 593                         struct files_struct *dirfsp,
 594                         const struct smb_filename *new_smb_fname)
 595 {
 596         return SMB_VFS_NEXT_SYMLINKAT(handle,
 597                                 link_contents,
 598                                 dirfsp,
 599                                 new_smb_fname);
 600 }
 601
 602 static int skel_vfs_readlinkat(vfs_handle_struct *handle,
 603                         files_struct *dirfsp,
 604                         const struct smb_filename *smb_fname,
 605                         char *buf,
 606                         size_t bufsiz)
 607 {
 608         return SMB_VFS_NEXT_READLINKAT(handle,
 609                         dirfsp,
 610                         smb_fname,
 611                         buf,
 612                         bufsiz);
 613 }
 614
 615 static int skel_linkat(vfs_handle_struct *handle,
 616                         files_struct *srcfsp,
 617                         const struct smb_filename *old_smb_fname,
 618                         files_struct *dstfsp,
 619                         const struct smb_filename *new_smb_fname,
 620                         int flags)
 621 {
 622         return SMB_VFS_NEXT_LINKAT(handle,
 623                         srcfsp,
 624                         old_smb_fname,
 625                         dstfsp,
 626                         new_smb_fname,
 627                         flags);
 628 }
 629
 630 static int skel_mknodat(vfs_handle_struct *handle,
 631                         files_struct *dirfsp,
 632                         const struct smb_filename *smb_fname,
 633                         mode_t mode,
 634                         SMB_DEV_T dev)
 635 {
 636         return SMB_VFS_NEXT_MKNODAT(handle,
 637                         dirfsp,
 638                         smb_fname,
 639                         mode,
 640                         dev);
 641 }
 642
 643 static struct smb_filename *skel_realpath(vfs_handle_struct *handle,
 644                         TALLOC_CTX *ctx,
 645                         const struct smb_filename *smb_fname)
 646 {
 647         return SMB_VFS_NEXT_REALPATH(handle, ctx, smb_fname);
 648 }
 649
 650 static int skel_chflags(vfs_handle_struct *handle,
 651                         const struct smb_filename *smb_fname,
 652                         uint flags)
 653 {
 654         return SMB_VFS_NEXT_CHFLAGS(handle, smb_fname, flags);
 655 }
 656
 657 static struct file_id skel_file_id_create(vfs_handle_struct *handle,
 658                                           const SMB_STRUCT_STAT *sbuf)
 659 {
 660         return SMB_VFS_NEXT_FILE_ID_CREATE(handle, sbuf);
 661 }
 662
 663 static uint64_t skel_fs_file_id(vfs_handle_struct *handle,
 664                                 const SMB_STRUCT_STAT *sbuf)
 665 {
 666         return SMB_VFS_NEXT_FS_FILE_ID(handle, sbuf);
 667 }
 668
 669 struct skel_offload_read_state {
 670         struct vfs_handle_struct *handle;
 671         DATA_BLOB token;
 672 };
 673
 674 static void skel_offload_read_done(struct tevent_req *subreq);
 675
 676 static struct tevent_req *skel_offload_read_send(
 677         TALLOC_CTX *mem_ctx,
 678         struct tevent_context *ev,
 679         struct vfs_handle_struct *handle,
 680         struct files_struct *fsp,
 681         uint32_t fsctl,
 682         uint32_t ttl,
 683         off_t offset,
 684         size_t to_copy)
 685 {
 686         struct tevent_req *req = NULL;
 687         struct skel_offload_read_state *state = NULL;
 688         struct tevent_req *subreq = NULL;
 689
 690         req = tevent_req_create(mem_ctx, &state, struct skel_offload_read_state);
 691         if (req == NULL) {
 692                 return NULL;
 693         }
 694         *state = (struct skel_offload_read_state) {
 695                 .handle = handle,
 696         };
 697
 698         subreq = SMB_VFS_NEXT_OFFLOAD_READ_SEND(mem_ctx, ev, handle, fsp,
 699                                                 fsctl, ttl, offset, to_copy);
 700         if (tevent_req_nomem(subreq, req)) {
 701                 return tevent_req_post(req, ev);
 702         }
 703         tevent_req_set_callback(subreq, skel_offload_read_done, req);
 704         return req;
 705 }
 706
 707 static void skel_offload_read_done(struct tevent_req *subreq)
 708 {
 709         struct tevent_req *req = tevent_req_callback_data(
 710                 subreq, struct tevent_req);
 711         struct skel_offload_read_state *state = tevent_req_data(
 712                 req, struct skel_offload_read_state);
 713         NTSTATUS status;
 714
 715         status = SMB_VFS_NEXT_OFFLOAD_READ_RECV(subreq,
 716                                                 state->handle,
 717                                                 state,
 718                                                 &state->token);
 719         TALLOC_FREE(subreq);
 720         if (tevent_req_nterror(req, status)) {
 721                 return;
 722         }
 723
 724         tevent_req_done(req);
 725         return;
 726 }
 727
 728 static NTSTATUS skel_offload_read_recv(struct tevent_req *req,
 729                                        struct vfs_handle_struct *handle,
 730                                        TALLOC_CTX *mem_ctx,
 731                                        DATA_BLOB *_token)
 732 {
 733         struct skel_offload_read_state *state = tevent_req_data(
 734                 req, struct skel_offload_read_state);
 735         DATA_BLOB token;
 736         NTSTATUS status;
 737
 738         if (tevent_req_is_nterror(req, &status)) {
 739                 tevent_req_received(req);
 740                 return status;
 741         }
 742
 743         token = data_blob_talloc(mem_ctx,
 744                                  state->token.data,
 745                                  state->token.length);
 746
 747         tevent_req_received(req);
 748
 749         if (token.data == NULL) {
 750                 return NT_STATUS_NO_MEMORY;
 751         }
 752
 753         *_token = token;
 754         return NT_STATUS_OK;
 755 }
 756
 757 struct skel_offload_write_state {
 758         struct vfs_handle_struct *handle;
 759         off_t copied;
 760 };
 761 static void skel_offload_write_done(struct tevent_req *subreq);
 762
 763 static struct tevent_req *skel_offload_write_send(struct vfs_handle_struct *handle,
 764                                                TALLOC_CTX *mem_ctx,
 765                                                struct tevent_context *ev,
 766                                                uint32_t fsctl,
 767                                                DATA_BLOB *token,
 768                                                off_t transfer_offset,
 769                                                struct files_struct *dest_fsp,
 770                                                off_t dest_off,
 771                                                off_t num)
 772 {
 773         struct tevent_req *req;
 774         struct tevent_req *subreq;
 775         struct skel_offload_write_state *state;
 776
 777         req = tevent_req_create(mem_ctx, &state, struct skel_offload_write_state);
 778         if (req == NULL) {
 779                 return NULL;
 780         }
 781
 782         state->handle = handle;
 783         subreq = SMB_VFS_NEXT_OFFLOAD_WRITE_SEND(handle, state, ev,
 784                                               fsctl, token, transfer_offset,
 785                                               dest_fsp, dest_off, num);
 786         if (tevent_req_nomem(subreq, req)) {
 787                 return tevent_req_post(req, ev);
 788         }
 789
 790         tevent_req_set_callback(subreq, skel_offload_write_done, req);
 791         return req;
 792 }
 793
 794 static void skel_offload_write_done(struct tevent_req *subreq)
 795 {
 796         struct tevent_req *req = tevent_req_callback_data(
 797                 subreq, struct tevent_req);
 798         struct skel_offload_write_state *state
 799                         = tevent_req_data(req, struct skel_offload_write_state);
 800         NTSTATUS status;
 801
 802         status = SMB_VFS_NEXT_OFFLOAD_WRITE_RECV(state->handle,
 803                                               subreq,
 804                                               &state->copied);
 805         TALLOC_FREE(subreq);
 806         if (tevent_req_nterror(req, status)) {
 807                 return;
 808         }
 809         tevent_req_done(req);
 810 }
 811
 812 static NTSTATUS skel_offload_write_recv(struct vfs_handle_struct *handle,
 813                                      struct tevent_req *req,
 814                                      off_t *copied)
 815 {
 816         struct skel_offload_write_state *state
 817                         = tevent_req_data(req, struct skel_offload_write_state);
 818         NTSTATUS status;
 819
 820         *copied = state->copied;
 821         if (tevent_req_is_nterror(req, &status)) {
 822                 tevent_req_received(req);
 823                 return status;
 824         }
 825
 826         tevent_req_received(req);
 827         return NT_STATUS_OK;
 828 }
 829
 830 static NTSTATUS skel_get_compression(struct vfs_handle_struct *handle,
 831                                      TALLOC_CTX *mem_ctx,
 832                                      struct files_struct *fsp,
 833                                      struct smb_filename *smb_fname,
 834                                      uint16_t *_compression_fmt)
 835 {
 836         return SMB_VFS_NEXT_GET_COMPRESSION(handle, mem_ctx, fsp, smb_fname,
 837                                             _compression_fmt);
 838 }
 839
 840 static NTSTATUS skel_set_compression(struct vfs_handle_struct *handle,
 841                                      TALLOC_CTX *mem_ctx,
 842                                      struct files_struct *fsp,
 843                                      uint16_t compression_fmt)
 844 {
 845         return SMB_VFS_NEXT_SET_COMPRESSION(handle, mem_ctx, fsp,
 846                                             compression_fmt);
 847 }
 848
 849 static NTSTATUS skel_streaminfo(struct vfs_handle_struct *handle,
 850                                 struct files_struct *fsp,
 851                                 const struct smb_filename *smb_fname,
 852                                 TALLOC_CTX *mem_ctx,
 853                                 unsigned int *num_streams,
 854                                 struct stream_struct **streams)
 855 {
 856         return SMB_VFS_NEXT_STREAMINFO(handle,
 857                                 fsp,
 858                                 smb_fname,
 859                                 mem_ctx,
 860                                 num_streams,
 861                                 streams);
 862 }
 863
 864 static int skel_get_real_filename(struct vfs_handle_struct *handle,
 865                                   const struct smb_filename *path,
 866                                   const char *name,
 867                                   TALLOC_CTX *mem_ctx, char **found_name)
 868 {
 869         return SMB_VFS_NEXT_GET_REAL_FILENAME(handle,
 870                                               path, name, mem_ctx, found_name);
 871 }
 872
 873 static const char *skel_connectpath(struct vfs_handle_struct *handle,
 874                                 const struct smb_filename *smb_fname)
 875 {
 876         return SMB_VFS_NEXT_CONNECTPATH(handle, smb_fname);
 877 }
 878
 879 static NTSTATUS skel_brl_lock_windows(struct vfs_handle_struct *handle,
 880                                       struct byte_range_lock *br_lck,
 881                                       struct lock_struct *plock)
 882 {
 883         return SMB_VFS_NEXT_BRL_LOCK_WINDOWS(handle, br_lck, plock);
 884 }
 885
 886 static bool skel_brl_unlock_windows(struct vfs_handle_struct *handle,
 887                                     struct byte_range_lock *br_lck,
 888                                     const struct lock_struct *plock)
 889 {
 890         return SMB_VFS_NEXT_BRL_UNLOCK_WINDOWS(handle, br_lck, plock);
 891 }
 892
 893 static bool skel_strict_lock_check(struct vfs_handle_struct *handle,
 894                                    struct files_struct *fsp,
 895                                    struct lock_struct *plock)
 896 {
 897         return SMB_VFS_NEXT_STRICT_LOCK_CHECK(handle, fsp, plock);
 898 }
 899
 900 static NTSTATUS skel_translate_name(struct vfs_handle_struct *handle,
 901                                     const char *mapped_name,
 902                                     enum vfs_translate_direction direction,
 903                                     TALLOC_CTX *mem_ctx, char **pmapped_name)
 904 {
 905         return SMB_VFS_NEXT_TRANSLATE_NAME(handle, mapped_name, direction,
 906                                            mem_ctx, pmapped_name);
 907 }
 908
 909 static NTSTATUS skel_fsctl(struct vfs_handle_struct *handle,
 910                            struct files_struct *fsp,
 911                            TALLOC_CTX *ctx,
 912                            uint32_t function,
 913                            uint16_t req_flags,  /* Needed for UNICODE ... */
 914                            const uint8_t *_in_data,
 915                            uint32_t in_len,
 916                            uint8_t ** _out_data,
 917                            uint32_t max_out_len, uint32_t *out_len)
 918 {
 919         return SMB_VFS_NEXT_FSCTL(handle,
 920                                   fsp,
 921                                   ctx,
 922                                   function,
 923                                   req_flags,
 924                                   _in_data,
 925                                   in_len, _out_data, max_out_len, out_len);
 926 }
 927
 928 static NTSTATUS skel_readdir_attr(struct vfs_handle_struct *handle,
 929                                   const struct smb_filename *fname,
 930                                   TALLOC_CTX *mem_ctx,
 931                                   struct readdir_attr_data **pattr_data)
 932 {
 933         return SMB_VFS_NEXT_READDIR_ATTR(handle, fname, mem_ctx, pattr_data);
 934 }
 935
 936 static NTSTATUS skel_get_dos_attributes(struct vfs_handle_struct *handle,
 937                                 struct smb_filename *smb_fname,
 938                                 uint32_t *dosmode)
 939 {
 940         return SMB_VFS_NEXT_GET_DOS_ATTRIBUTES(handle,
 941                                 smb_fname,
 942                                 dosmode);
 943 }
 944
 945 struct skel_get_dos_attributes_state {
 946         struct vfs_aio_state aio_state;
 947         uint32_t dosmode;
 948 };
 949
 950 static void skel_get_dos_attributes_done(struct tevent_req *subreq);
 951
 952 static struct tevent_req *skel_get_dos_attributes_send(
 953                         TALLOC_CTX *mem_ctx,
 954                         struct tevent_context *ev,
 955                         struct vfs_handle_struct *handle,
 956                         files_struct *dir_fsp,
 957                         struct smb_filename *smb_fname)
 958 {
 959         struct tevent_req *req = NULL;
 960         struct skel_get_dos_attributes_state *state = NULL;
 961         struct tevent_req *subreq = NULL;
 962
 963         req = tevent_req_create(mem_ctx, &state,
 964                                 struct skel_get_dos_attributes_state);
 965         if (req == NULL) {
 966                 return NULL;
 967         }
 968
 969         subreq = SMB_VFS_NEXT_GET_DOS_ATTRIBUTES_SEND(mem_ctx,
 970                                                       ev,
 971                                                       handle,
 972                                                       dir_fsp,
 973                                                       smb_fname);
 974         if (tevent_req_nomem(subreq, req)) {
 975                 return tevent_req_post(req, ev);
 976         }
 977         tevent_req_set_callback(subreq, skel_get_dos_attributes_done, req);
 978
 979         return req;
 980 }
 981
 982 static void skel_get_dos_attributes_done(struct tevent_req *subreq)
 983 {
 984         struct tevent_req *req =
 985                 tevent_req_callback_data(subreq,
 986                 struct tevent_req);
 987         struct skel_get_dos_attributes_state *state =
 988                 tevent_req_data(req,
 989                 struct skel_get_dos_attributes_state);
 990         NTSTATUS status;
 991
 992         status = SMB_VFS_NEXT_GET_DOS_ATTRIBUTES_RECV(subreq,
 993                                                       &state->aio_state,
 994                                                       &state->dosmode);
 995         TALLOC_FREE(subreq);
 996         if (tevent_req_nterror(req, status)) {
 997                 return;
 998         }
 999
1000         tevent_req_done(req);
1001         return;
1002 }
1003
1004 static NTSTATUS skel_get_dos_attributes_recv(struct tevent_req *req,
1005                                              struct vfs_aio_state *aio_state,
1006                                              uint32_t *dosmode)
1007 {
1008         struct skel_get_dos_attributes_state *state =
1009                 tevent_req_data(req,
1010                 struct skel_get_dos_attributes_state);
1011         NTSTATUS status;
1012
1013         if (tevent_req_is_nterror(req, &status)) {
1014                 tevent_req_received(req);
1015                 return status;
1016         }
1017
1018         *aio_state = state->aio_state;
1019         *dosmode = state->dosmode;
1020         tevent_req_received(req);
1021         return NT_STATUS_OK;
1022 }
1023
1024 static NTSTATUS skel_fget_dos_attributes(struct vfs_handle_struct *handle,
1025                                 struct files_struct *fsp,
1026                                 uint32_t *dosmode)
1027 {
1028         return SMB_VFS_NEXT_FGET_DOS_ATTRIBUTES(handle,
1029                                 fsp,
1030                                 dosmode);
1031 }
1032
1033 static NTSTATUS skel_set_dos_attributes(struct vfs_handle_struct *handle,
1034                                 const struct smb_filename *smb_fname,
1035                                 uint32_t dosmode)
1036 {
1037         return SMB_VFS_NEXT_SET_DOS_ATTRIBUTES(handle,
1038                                 smb_fname,
1039                                 dosmode);
1040 }
1041
1042 static NTSTATUS skel_fset_dos_attributes(struct vfs_handle_struct *handle,
1043                                 struct files_struct *fsp,
1044                                 uint32_t dosmode)
1045 {
1046         return SMB_VFS_NEXT_FSET_DOS_ATTRIBUTES(handle,
1047                                 fsp,
1048                                 dosmode);
1049 }
1050
1051 static NTSTATUS skel_fget_nt_acl(vfs_handle_struct *handle, files_struct *fsp,
1052                                  uint32_t security_info,
1053                                  TALLOC_CTX *mem_ctx,
1054                                  struct security_descriptor **ppdesc)
1055 {
1056         return SMB_VFS_NEXT_FGET_NT_ACL(handle, fsp, security_info, mem_ctx,
1057                                         ppdesc);
1058 }
1059
1060 static NTSTATUS skel_get_nt_acl_at(vfs_handle_struct *handle,
1061                                 struct files_struct *dirfsp,
1062                                 const struct smb_filename *smb_fname,
1063                                 uint32_t security_info,
1064                                 TALLOC_CTX *mem_ctx,
1065                                 struct security_descriptor **ppdesc)
1066 {
1067         return SMB_VFS_NEXT_GET_NT_ACL_AT(handle,
1068                                 dirfsp,
1069                                 smb_fname,
1070                                 security_info,
1071                                 mem_ctx,
1072                                 ppdesc);
1073 }
1074
1075 static NTSTATUS skel_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp,
1076                                  uint32_t security_info_sent,
1077                                  const struct security_descriptor *psd)
1078 {
1079         return SMB_VFS_NEXT_FSET_NT_ACL(handle, fsp, security_info_sent, psd);
1080 }
1081
1082 static SMB_ACL_T skel_sys_acl_get_file(vfs_handle_struct *handle,
1083                                        const struct smb_filename *smb_fname,
1084                                        SMB_ACL_TYPE_T type,
1085                                        TALLOC_CTX *mem_ctx)
1086 {
1087         return SMB_VFS_NEXT_SYS_ACL_GET_FILE(handle, smb_fname, type, mem_ctx);
1088 }
1089
1090 static SMB_ACL_T skel_sys_acl_get_fd(vfs_handle_struct *handle,
1091                                      files_struct *fsp, TALLOC_CTX *mem_ctx)
1092 {
1093         return SMB_VFS_NEXT_SYS_ACL_GET_FD(handle, fsp, mem_ctx);
1094 }
1095
1096 static int skel_sys_acl_blob_get_file(vfs_handle_struct *handle,
1097                                 const struct smb_filename *smb_fname,
1098                                 TALLOC_CTX *mem_ctx,
1099                                 char **blob_description,
1100                                 DATA_BLOB *blob)
1101 {
1102         return SMB_VFS_NEXT_SYS_ACL_BLOB_GET_FILE(handle, smb_fname, mem_ctx,
1103                                                   blob_description, blob);
1104 }
1105
1106 static int skel_sys_acl_blob_get_fd(vfs_handle_struct *handle,
1107                                     files_struct *fsp, TALLOC_CTX *mem_ctx,
1108                                     char **blob_description, DATA_BLOB *blob)
1109 {
1110         return SMB_VFS_NEXT_SYS_ACL_BLOB_GET_FD(handle, fsp, mem_ctx,
1111                                                 blob_description, blob);
1112 }
1113
1114 static int skel_sys_acl_set_file(vfs_handle_struct *handle,
1115                                 const struct smb_filename *smb_fname,
1116                                 SMB_ACL_TYPE_T acltype,
1117                                 SMB_ACL_T theacl)
1118 {
1119         return SMB_VFS_NEXT_SYS_ACL_SET_FILE(handle, smb_fname,
1120                         acltype, theacl);
1121 }
1122
1123 static int skel_sys_acl_set_fd(vfs_handle_struct *handle, files_struct *fsp,
1124                                SMB_ACL_T theacl)
1125 {
1126         return SMB_VFS_NEXT_SYS_ACL_SET_FD(handle, fsp, theacl);
1127 }
1128
1129 static int skel_sys_acl_delete_def_file(vfs_handle_struct *handle,
1130                                         const struct smb_filename *smb_fname)
1131 {
1132         return SMB_VFS_NEXT_SYS_ACL_DELETE_DEF_FILE(handle, smb_fname);
1133 }
1134
1135 static ssize_t skel_getxattr(vfs_handle_struct *handle,
1136                                 const struct smb_filename *smb_fname,
1137                                 const char *name,
1138                                 void *value,
1139                                 size_t size)
1140 {
1141         return SMB_VFS_NEXT_GETXATTR(handle, smb_fname, name, value, size);
1142 }
1143
1144 struct skel_getxattrat_state {
1145         struct vfs_aio_state aio_state;
1146         ssize_t xattr_size;
1147         uint8_t *xattr_value;
1148 };
1149
1150 static void skel_getxattrat_done(struct tevent_req *subreq);
1151
1152 static struct tevent_req *skel_getxattrat_send(
1153                         TALLOC_CTX *mem_ctx,
1154                         struct tevent_context *ev,
1155                         struct vfs_handle_struct *handle,
1156                         files_struct *dir_fsp,
1157                         const struct smb_filename *smb_fname,
1158                         const char *xattr_name,
1159                         size_t alloc_hint)
1160 {
1161         struct tevent_req *req = NULL;
1162         struct skel_getxattrat_state *state = NULL;
1163         struct tevent_req *subreq = NULL;
1164
1165         req = tevent_req_create(mem_ctx, &state,
1166                                 struct skel_getxattrat_state);
1167         if (req == NULL) {
1168                 return NULL;
1169         }
1170
1171         subreq = SMB_VFS_NEXT_GETXATTRAT_SEND(state,
1172                                               ev,
1173                                               handle,
1174                                               dir_fsp,
1175                                               smb_fname,
1176                                               xattr_name,
1177                                               alloc_hint);
1178         if (tevent_req_nomem(subreq, req)) {
1179                 return tevent_req_post(req, ev);
1180         }
1181         tevent_req_set_callback(subreq, skel_getxattrat_done, req);
1182
1183         return req;
1184 }
1185
1186 static void skel_getxattrat_done(struct tevent_req *subreq)
1187 {
1188         struct tevent_req *req = tevent_req_callback_data(
1189                 subreq, struct tevent_req);
1190         struct skel_getxattrat_state *state = tevent_req_data(
1191                 req, struct skel_getxattrat_state);
1192
1193         state->xattr_size = SMB_VFS_NEXT_GETXATTRAT_RECV(subreq,
1194                                                          &state->aio_state,
1195                                                          state,
1196                                                          &state->xattr_value);
1197         TALLOC_FREE(subreq);
1198         if (state->xattr_size == -1) {
1199                 tevent_req_error(req, state->aio_state.error);
1200                 return;
1201         }
1202
1203         tevent_req_done(req);
1204 }
1205
1206 static ssize_t skel_getxattrat_recv(struct tevent_req *req,
1207                                     struct vfs_aio_state *aio_state,
1208                                     TALLOC_CTX *mem_ctx,
1209                                     uint8_t **xattr_value)
1210 {
1211         struct skel_getxattrat_state *state = tevent_req_data(
1212                 req, struct skel_getxattrat_state);
1213         ssize_t xattr_size;
1214
1215         if (tevent_req_is_unix_error(req, &aio_state->error)) {
1216                 tevent_req_received(req);
1217                 return -1;
1218         }
1219
1220         *aio_state = state->aio_state;
1221         xattr_size = state->xattr_size;
1222         if (xattr_value != NULL) {
1223                 *xattr_value = talloc_move(mem_ctx, &state->xattr_value);
1224         }
1225
1226         tevent_req_received(req);
1227         return xattr_size;
1228 }
1229
1230 static ssize_t skel_fgetxattr(vfs_handle_struct *handle,
1231                               struct files_struct *fsp, const char *name,
1232                               void *value, size_t size)
1233 {
1234         return SMB_VFS_NEXT_FGETXATTR(handle, fsp, name, value, size);
1235 }
1236
1237 static ssize_t skel_listxattr(vfs_handle_struct *handle,
1238                                 const struct smb_filename *smb_fname,
1239                                 char *list,
1240                                 size_t size)
1241 {
1242         return SMB_VFS_NEXT_LISTXATTR(handle, smb_fname, list, size);
1243 }
1244
1245 static ssize_t skel_flistxattr(vfs_handle_struct *handle,
1246                                struct files_struct *fsp, char *list,
1247                                size_t size)
1248 {
1249         return SMB_VFS_NEXT_FLISTXATTR(handle, fsp, list, size);
1250 }
1251
1252 static int skel_removexattr(vfs_handle_struct *handle,
1253                         const struct smb_filename *smb_fname,
1254                         const char *name)
1255 {
1256         return SMB_VFS_NEXT_REMOVEXATTR(handle, smb_fname, name);
1257 }
1258
1259 static int skel_fremovexattr(vfs_handle_struct *handle,
1260                              struct files_struct *fsp, const char *name)
1261 {
1262         return SMB_VFS_NEXT_FREMOVEXATTR(handle, fsp, name);
1263 }
1264
1265 static int skel_setxattr(vfs_handle_struct *handle,
1266                         const struct smb_filename *smb_fname,
1267                         const char *name,
1268                         const void *value,
1269                         size_t size,
1270                         int flags)
1271 {
1272         return SMB_VFS_NEXT_SETXATTR(handle, smb_fname,
1273                         name, value, size, flags);
1274 }
1275
1276 static int skel_fsetxattr(vfs_handle_struct *handle, struct files_struct *fsp,
1277                           const char *name, const void *value, size_t size,
1278                           int flags)
1279 {
1280         return SMB_VFS_NEXT_FSETXATTR(handle, fsp, name, value, size, flags);
1281 }
1282
1283 static bool skel_aio_force(struct vfs_handle_struct *handle,
1284                            struct files_struct *fsp)
1285 {
1286         return SMB_VFS_NEXT_AIO_FORCE(handle, fsp);
1287 }
1288
1289 static NTSTATUS skel_audit_file(struct vfs_handle_struct *handle,
1290                                 struct smb_filename *file,
1291                                 struct security_acl *sacl,
1292                                 uint32_t access_requested,
1293                                 uint32_t access_denied)
1294 {
1295         return SMB_VFS_NEXT_AUDIT_FILE(handle,
1296                                        file,
1297                                        sacl,
1298                                        access_requested,
1299                                        access_denied);
1300 }
1301
1302 static NTSTATUS skel_durable_cookie(struct vfs_handle_struct *handle,
1303                                     struct files_struct *fsp,
1304                                     TALLOC_CTX *mem_ctx,
1305                                     DATA_BLOB *cookie)
1306 {
1307         return SMB_VFS_NEXT_DURABLE_COOKIE(handle,
1308                                            fsp,
1309                                            mem_ctx,
1310                                            cookie);
1311 }
1312
1313 static NTSTATUS skel_durable_disconnect(struct vfs_handle_struct *handle,
1314                                         struct files_struct *fsp,
1315                                         const DATA_BLOB old_cookie,
1316                                         TALLOC_CTX *mem_ctx,
1317                                         DATA_BLOB *new_cookie)
1318 {
1319         return SMB_VFS_NEXT_DURABLE_DISCONNECT(handle,
1320                                                fsp,
1321                                                old_cookie,
1322                                                mem_ctx,
1323                                                new_cookie);
1324 }
1325
1326 static NTSTATUS skel_durable_reconnect(struct vfs_handle_struct *handle,
1327                                        struct smb_request *smb1req,
1328                                        struct smbXsrv_open *op,
1329                                        const DATA_BLOB old_cookie,
1330                                        TALLOC_CTX *mem_ctx,
1331                                        struct files_struct **fsp,
1332                                        DATA_BLOB *new_cookie)
1333 {
1334         return SMB_VFS_NEXT_DURABLE_RECONNECT(handle,
1335                                               smb1req,
1336                                               op,
1337                                               old_cookie,
1338                                               mem_ctx,
1339                                               fsp,
1340                                               new_cookie);
1341 }
1342
1343 /* VFS operations structure */
1344
1345 static struct vfs_fn_pointers skel_transparent_fns = {
1346         /* Disk operations */
1347
1348         .connect_fn = skel_connect,
1349         .disconnect_fn = skel_disconnect,
1350         .disk_free_fn = skel_disk_free,
1351         .get_quota_fn = skel_get_quota,
1352         .set_quota_fn = skel_set_quota,
1353         .get_shadow_copy_data_fn = skel_get_shadow_copy_data,
1354         .statvfs_fn = skel_statvfs,
1355         .fs_capabilities_fn = skel_fs_capabilities,
1356         .get_dfs_referrals_fn = skel_get_dfs_referrals,
1357         .create_dfs_pathat_fn = skel_create_dfs_pathat,
1358         .read_dfs_pathat_fn = skel_read_dfs_pathat,
1359         .snap_check_path_fn = skel_snap_check_path,
1360         .snap_create_fn = skel_snap_create,
1361         .snap_delete_fn = skel_snap_delete,
1362
1363         /* Directory operations */
1364
1365         .fdopendir_fn = skel_fdopendir,
1366         .readdir_fn = skel_readdir,
1367         .seekdir_fn = skel_seekdir,
1368         .telldir_fn = skel_telldir,
1369         .rewind_dir_fn = skel_rewind_dir,
1370         .mkdirat_fn = skel_mkdirat,
1371         .closedir_fn = skel_closedir,
1372
1373         /* File operations */
1374
1375         .openat_fn = skel_openat,
1376         .create_file_fn = skel_create_file,
1377         .close_fn = skel_close_fn,
1378         .pread_fn = skel_pread,
1379         .pread_send_fn = skel_pread_send,
1380         .pread_recv_fn = skel_pread_recv,
1381         .pwrite_fn = skel_pwrite,
1382         .pwrite_send_fn = skel_pwrite_send,
1383         .pwrite_recv_fn = skel_pwrite_recv,
1384         .lseek_fn = skel_lseek,
1385         .sendfile_fn = skel_sendfile,
1386         .recvfile_fn = skel_recvfile,
1387         .renameat_fn = skel_renameat,
1388         .fsync_send_fn = skel_fsync_send,
1389         .fsync_recv_fn = skel_fsync_recv,
1390         .stat_fn = skel_stat,
1391         .fstat_fn = skel_fstat,
1392         .lstat_fn = skel_lstat,
1393         .get_alloc_size_fn = skel_get_alloc_size,
1394         .unlinkat_fn = skel_unlinkat,
1395         .chmod_fn = skel_chmod,
1396         .fchmod_fn = skel_fchmod,
1397         .fchown_fn = skel_fchown,
1398         .lchown_fn = skel_lchown,
1399         .chdir_fn = skel_chdir,
1400         .getwd_fn = skel_getwd,
1401         .ntimes_fn = skel_ntimes,
1402         .ftruncate_fn = skel_ftruncate,
1403         .fallocate_fn = skel_fallocate,
1404         .lock_fn = skel_lock,
1405         .kernel_flock_fn = skel_kernel_flock,
1406         .fcntl_fn = skel_fcntl,
1407         .linux_setlease_fn = skel_linux_setlease,
1408         .getlock_fn = skel_getlock,
1409         .symlinkat_fn = skel_symlinkat,
1410         .readlinkat_fn = skel_vfs_readlinkat,
1411         .linkat_fn = skel_linkat,
1412         .mknodat_fn = skel_mknodat,
1413         .realpath_fn = skel_realpath,
1414         .chflags_fn = skel_chflags,
1415         .file_id_create_fn = skel_file_id_create,
1416         .fs_file_id_fn = skel_fs_file_id,
1417         .offload_read_send_fn = skel_offload_read_send,
1418         .offload_read_recv_fn = skel_offload_read_recv,
1419         .offload_write_send_fn = skel_offload_write_send,
1420         .offload_write_recv_fn = skel_offload_write_recv,
1421         .get_compression_fn = skel_get_compression,
1422         .set_compression_fn = skel_set_compression,
1423
1424         .streaminfo_fn = skel_streaminfo,
1425         .get_real_filename_fn = skel_get_real_filename,
1426         .connectpath_fn = skel_connectpath,
1427         .brl_lock_windows_fn = skel_brl_lock_windows,
1428         .brl_unlock_windows_fn = skel_brl_unlock_windows,
1429         .strict_lock_check_fn = skel_strict_lock_check,
1430         .translate_name_fn = skel_translate_name,
1431         .fsctl_fn = skel_fsctl,
1432         .readdir_attr_fn = skel_readdir_attr,
1433         .audit_file_fn = skel_audit_file,
1434
1435         /* DOS attributes. */
1436         .get_dos_attributes_fn = skel_get_dos_attributes,
1437         .get_dos_attributes_send_fn = skel_get_dos_attributes_send,
1438         .get_dos_attributes_recv_fn = skel_get_dos_attributes_recv,
1439         .fget_dos_attributes_fn = skel_fget_dos_attributes,
1440         .set_dos_attributes_fn = skel_set_dos_attributes,
1441         .fset_dos_attributes_fn = skel_fset_dos_attributes,
1442
1443         /* NT ACL operations. */
1444
1445         .fget_nt_acl_fn = skel_fget_nt_acl,
1446         .get_nt_acl_at_fn = skel_get_nt_acl_at,
1447         .fset_nt_acl_fn = skel_fset_nt_acl,
1448
1449         /* POSIX ACL operations. */
1450
1451         .sys_acl_get_file_fn = skel_sys_acl_get_file,
1452         .sys_acl_get_fd_fn = skel_sys_acl_get_fd,
1453         .sys_acl_blob_get_file_fn = skel_sys_acl_blob_get_file,
1454         .sys_acl_blob_get_fd_fn = skel_sys_acl_blob_get_fd,
1455         .sys_acl_set_file_fn = skel_sys_acl_set_file,
1456         .sys_acl_set_fd_fn = skel_sys_acl_set_fd,
1457         .sys_acl_delete_def_file_fn = skel_sys_acl_delete_def_file,
1458
1459         /* EA operations. */
1460         .getxattr_fn = skel_getxattr,
1461         .getxattrat_send_fn = skel_getxattrat_send,
1462         .getxattrat_recv_fn = skel_getxattrat_recv,
1463         .fgetxattr_fn = skel_fgetxattr,
1464         .listxattr_fn = skel_listxattr,
1465         .flistxattr_fn = skel_flistxattr,
1466         .removexattr_fn = skel_removexattr,
1467         .fremovexattr_fn = skel_fremovexattr,
1468         .setxattr_fn = skel_setxattr,
1469         .fsetxattr_fn = skel_fsetxattr,
1470
1471         /* aio operations */
1472         .aio_force_fn = skel_aio_force,
1473
1474         /* durable handle operations */
1475         .durable_cookie_fn = skel_durable_cookie,
1476         .durable_disconnect_fn = skel_durable_disconnect,
1477         .durable_reconnect_fn = skel_durable_reconnect,
1478 };
1479
1480 static_decl_vfs;
1481 NTSTATUS vfs_skel_transparent_init(TALLOC_CTX *ctx)
1482 {
1483         /*
1484          * smb_vfs_assert_all_fns() is only needed in
1485          * order to have a complete example.
1486          *
1487          * A transparent vfs module typically don't
1488          * need to implement every calls.
1489          */
1490         smb_vfs_assert_all_fns(&skel_transparent_fns, "skel_transparent");
1491         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "skel_transparent",
1492                                 &skel_transparent_fns);
1493 }