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  * neccessary 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, const char *path,
  52                                uint64_t *bsize,
  53                                uint64_t *dfree, uint64_t *dsize)
  54 {
  55         return SMB_VFS_NEXT_DISK_FREE(handle, path, bsize, dfree, dsize);
  56 }
  57
  58 static int skel_get_quota(vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype,
  59                           unid_t id, SMB_DISK_QUOTA *dq)
  60 {
  61         return SMB_VFS_NEXT_GET_QUOTA(handle, qtype, id, dq);
  62 }
  63
  64 static int skel_set_quota(vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype,
  65                           unid_t id, SMB_DISK_QUOTA *dq)
  66 {
  67         return SMB_VFS_NEXT_SET_QUOTA(handle, qtype, id, dq);
  68 }
  69
  70 static int skel_get_shadow_copy_data(vfs_handle_struct *handle,
  71                                      files_struct *fsp,
  72                                      struct shadow_copy_data *shadow_copy_data,
  73                                      bool labels)
  74 {
  75         return SMB_VFS_NEXT_GET_SHADOW_COPY_DATA(handle, fsp, shadow_copy_data,
  76                                                  labels);
  77 }
  78
  79 static int skel_statvfs(struct vfs_handle_struct *handle, const char *path,
  80                         struct vfs_statvfs_struct *statbuf)
  81 {
  82         return SMB_VFS_NEXT_STATVFS(handle, path, statbuf);
  83 }
  84
  85 static uint32_t skel_fs_capabilities(struct vfs_handle_struct *handle,
  86                                      enum timestamp_set_resolution *p_ts_res)
  87 {
  88         return SMB_VFS_NEXT_FS_CAPABILITIES(handle, p_ts_res);
  89 }
  90
  91 static NTSTATUS skel_get_dfs_referrals(struct vfs_handle_struct *handle,
  92                                        struct dfs_GetDFSReferral *r)
  93 {
  94         return SMB_VFS_NEXT_GET_DFS_REFERRALS(handle, r);
  95 }
  96
  97 static DIR *skel_opendir(vfs_handle_struct *handle, const char *fname,
  98                          const char *mask, uint32 attr)
  99 {
 100         return SMB_VFS_NEXT_OPENDIR(handle, fname, mask, attr);
 101 }
 102
 103 static DIR *skel_fdopendir(vfs_handle_struct *handle, files_struct *fsp,
 104                            const char *mask, uint32 attr)
 105 {
 106         return SMB_VFS_NEXT_FDOPENDIR(handle, fsp, mask, attr);
 107 }
 108
 109 static struct dirent *skel_readdir(vfs_handle_struct *handle,
 110                                    DIR *dirp, SMB_STRUCT_STAT *sbuf)
 111 {
 112         return SMB_VFS_NEXT_READDIR(handle, dirp, sbuf);
 113 }
 114
 115 static void skel_seekdir(vfs_handle_struct *handle, DIR *dirp, long offset)
 116 {
 117         SMB_VFS_NEXT_SEEKDIR(handle, dirp, offset);
 118 }
 119
 120 static long skel_telldir(vfs_handle_struct *handle, DIR *dirp)
 121 {
 122         return SMB_VFS_NEXT_TELLDIR(handle, dirp);
 123 }
 124
 125 static void skel_rewind_dir(vfs_handle_struct *handle, DIR *dirp)
 126 {
 127         SMB_VFS_NEXT_REWINDDIR(handle, dirp);
 128 }
 129
 130 static int skel_mkdir(vfs_handle_struct *handle, const char *path, mode_t mode)
 131 {
 132         return SMB_VFS_NEXT_MKDIR(handle, path, mode);
 133 }
 134
 135 static int skel_rmdir(vfs_handle_struct *handle, const char *path)
 136 {
 137         return SMB_VFS_NEXT_RMDIR(handle, path);
 138 }
 139
 140 static int skel_closedir(vfs_handle_struct *handle, DIR *dir)
 141 {
 142         return SMB_VFS_NEXT_CLOSEDIR(handle, dir);
 143 }
 144
 145 static void skel_init_search_op(struct vfs_handle_struct *handle, DIR *dirp)
 146 {
 147         SMB_VFS_NEXT_INIT_SEARCH_OP(handle, dirp);
 148 }
 149
 150 static int skel_open(vfs_handle_struct *handle, struct smb_filename *smb_fname,
 151                      files_struct *fsp, int flags, mode_t mode)
 152 {
 153         return SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
 154 }
 155
 156 static NTSTATUS skel_create_file(struct vfs_handle_struct *handle,
 157                                  struct smb_request *req,
 158                                  uint16_t root_dir_fid,
 159                                  struct smb_filename *smb_fname,
 160                                  uint32_t access_mask,
 161                                  uint32_t share_access,
 162                                  uint32_t create_disposition,
 163                                  uint32_t create_options,
 164                                  uint32_t file_attributes,
 165                                  uint32_t oplock_request,
 166                                  struct smb2_lease *lease,
 167                                  uint64_t allocation_size,
 168                                  uint32_t private_flags,
 169                                  struct security_descriptor *sd,
 170                                  struct ea_list *ea_list,
 171                                  files_struct ** result, int *pinfo,
 172                                  const struct smb2_create_blobs *in_context_blobs,
 173                                  struct smb2_create_blobs *out_context_blobs)
 174 {
 175         return SMB_VFS_NEXT_CREATE_FILE(handle,
 176                                         req,
 177                                         root_dir_fid,
 178                                         smb_fname,
 179                                         access_mask,
 180                                         share_access,
 181                                         create_disposition,
 182                                         create_options,
 183                                         file_attributes,
 184                                         oplock_request,
 185                                         lease,
 186                                         allocation_size,
 187                                         private_flags,
 188                                         sd, ea_list, result, pinfo,
 189                                         in_context_blobs, out_context_blobs);
 190 }
 191
 192 static int skel_close_fn(vfs_handle_struct *handle, files_struct *fsp)
 193 {
 194         return SMB_VFS_NEXT_CLOSE(handle, fsp);
 195 }
 196
 197 static ssize_t skel_vfs_read(vfs_handle_struct *handle, files_struct *fsp,
 198                              void *data, size_t n)
 199 {
 200         return SMB_VFS_NEXT_READ(handle, fsp, data, n);
 201 }
 202
 203 static ssize_t skel_pread(vfs_handle_struct *handle, files_struct *fsp,
 204                           void *data, size_t n, off_t offset)
 205 {
 206         return SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
 207 }
 208
 209 struct skel_pread_state {
 210         ssize_t ret;
 211         int err;
 212 };
 213
 214 static void skel_pread_done(struct tevent_req *subreq);
 215
 216 static struct tevent_req *skel_pread_send(struct vfs_handle_struct *handle,
 217                                           TALLOC_CTX *mem_ctx,
 218                                           struct tevent_context *ev,
 219                                           struct files_struct *fsp,
 220                                           void *data, size_t n, off_t offset)
 221 {
 222         struct tevent_req *req, *subreq;
 223         struct skel_pread_state *state;
 224
 225         req = tevent_req_create(mem_ctx, &state, struct skel_pread_state);
 226         if (req == NULL) {
 227                 return NULL;
 228         }
 229         subreq = SMB_VFS_NEXT_PREAD_SEND(state, ev, handle, fsp, data,
 230                                          n, offset);
 231         if (tevent_req_nomem(subreq, req)) {
 232                 return tevent_req_post(req, ev);
 233         }
 234         tevent_req_set_callback(subreq, skel_pread_done, req);
 235         return req;
 236 }
 237
 238 static void skel_pread_done(struct tevent_req *subreq)
 239 {
 240         struct tevent_req *req =
 241             tevent_req_callback_data(subreq, struct tevent_req);
 242         struct skel_pread_state *state =
 243             tevent_req_data(req, struct skel_pread_state);
 244
 245         state->ret = SMB_VFS_PREAD_RECV(subreq, &state->err);
 246         TALLOC_FREE(subreq);
 247         tevent_req_done(req);
 248 }
 249
 250 static ssize_t skel_pread_recv(struct tevent_req *req, int *err)
 251 {
 252         struct skel_pread_state *state =
 253             tevent_req_data(req, struct skel_pread_state);
 254
 255         if (tevent_req_is_unix_error(req, err)) {
 256                 return -1;
 257         }
 258         *err = state->err;
 259         return state->ret;
 260 }
 261
 262 static ssize_t skel_write(vfs_handle_struct *handle, files_struct *fsp,
 263                           const void *data, size_t n)
 264 {
 265         return SMB_VFS_NEXT_WRITE(handle, fsp, data, n);
 266 }
 267
 268 static ssize_t skel_pwrite(vfs_handle_struct *handle, files_struct *fsp,
 269                            const void *data, size_t n, off_t offset)
 270 {
 271         return SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
 272 }
 273
 274 struct skel_pwrite_state {
 275         ssize_t ret;
 276         int err;
 277 };
 278
 279 static void skel_pwrite_done(struct tevent_req *subreq);
 280
 281 static struct tevent_req *skel_pwrite_send(struct vfs_handle_struct *handle,
 282                                            TALLOC_CTX *mem_ctx,
 283                                            struct tevent_context *ev,
 284                                            struct files_struct *fsp,
 285                                            const void *data,
 286                                            size_t n, off_t offset)
 287 {
 288         struct tevent_req *req, *subreq;
 289         struct skel_pwrite_state *state;
 290
 291         req = tevent_req_create(mem_ctx, &state, struct skel_pwrite_state);
 292         if (req == NULL) {
 293                 return NULL;
 294         }
 295         subreq = SMB_VFS_NEXT_PWRITE_SEND(state, ev, handle, fsp, data,
 296                                           n, offset);
 297         if (tevent_req_nomem(subreq, req)) {
 298                 return tevent_req_post(req, ev);
 299         }
 300         tevent_req_set_callback(subreq, skel_pwrite_done, req);
 301         return req;
 302 }
 303
 304 static void skel_pwrite_done(struct tevent_req *subreq)
 305 {
 306         struct tevent_req *req =
 307             tevent_req_callback_data(subreq, struct tevent_req);
 308         struct skel_pwrite_state *state =
 309             tevent_req_data(req, struct skel_pwrite_state);
 310
 311         state->ret = SMB_VFS_PWRITE_RECV(subreq, &state->err);
 312         TALLOC_FREE(subreq);
 313         tevent_req_done(req);
 314 }
 315
 316 static ssize_t skel_pwrite_recv(struct tevent_req *req, int *err)
 317 {
 318         struct skel_pwrite_state *state =
 319             tevent_req_data(req, struct skel_pwrite_state);
 320
 321         if (tevent_req_is_unix_error(req, err)) {
 322                 return -1;
 323         }
 324         *err = state->err;
 325         return state->ret;
 326 }
 327
 328 static off_t skel_lseek(vfs_handle_struct *handle, files_struct *fsp,
 329                         off_t offset, int whence)
 330 {
 331         return SMB_VFS_NEXT_LSEEK(handle, fsp, offset, whence);
 332 }
 333
 334 static ssize_t skel_sendfile(vfs_handle_struct *handle, int tofd,
 335                              files_struct *fromfsp, const DATA_BLOB *hdr,
 336                              off_t offset, size_t n)
 337 {
 338         return SMB_VFS_NEXT_SENDFILE(handle, tofd, fromfsp, hdr, offset, n);
 339 }
 340
 341 static ssize_t skel_recvfile(vfs_handle_struct *handle, int fromfd,
 342                              files_struct *tofsp, off_t offset, size_t n)
 343 {
 344         return SMB_VFS_NEXT_RECVFILE(handle, fromfd, tofsp, offset, n);
 345 }
 346
 347 static int skel_rename(vfs_handle_struct *handle,
 348                        const struct smb_filename *smb_fname_src,
 349                        const struct smb_filename *smb_fname_dst)
 350 {
 351         return SMB_VFS_NEXT_RENAME(handle, smb_fname_src, smb_fname_dst);
 352 }
 353
 354 static int skel_fsync(vfs_handle_struct *handle, files_struct *fsp)
 355 {
 356         return SMB_VFS_NEXT_FSYNC(handle, fsp);
 357 }
 358
 359 struct skel_fsync_state {
 360         int ret;
 361         int err;
 362 };
 363
 364 static void skel_fsync_done(struct tevent_req *subreq);
 365
 366 static struct tevent_req *skel_fsync_send(struct vfs_handle_struct *handle,
 367                                           TALLOC_CTX *mem_ctx,
 368                                           struct tevent_context *ev,
 369                                           struct files_struct *fsp)
 370 {
 371         struct tevent_req *req, *subreq;
 372         struct skel_fsync_state *state;
 373
 374         req = tevent_req_create(mem_ctx, &state, struct skel_fsync_state);
 375         if (req == NULL) {
 376                 return NULL;
 377         }
 378         subreq = SMB_VFS_NEXT_FSYNC_SEND(state, ev, handle, fsp);
 379         if (tevent_req_nomem(subreq, req)) {
 380                 return tevent_req_post(req, ev);
 381         }
 382         tevent_req_set_callback(subreq, skel_fsync_done, req);
 383         return req;
 384 }
 385
 386 static void skel_fsync_done(struct tevent_req *subreq)
 387 {
 388         struct tevent_req *req =
 389             tevent_req_callback_data(subreq, struct tevent_req);
 390         struct skel_fsync_state *state =
 391             tevent_req_data(req, struct skel_fsync_state);
 392
 393         state->ret = SMB_VFS_FSYNC_RECV(subreq, &state->err);
 394         TALLOC_FREE(subreq);
 395         tevent_req_done(req);
 396 }
 397
 398 static int skel_fsync_recv(struct tevent_req *req, int *err)
 399 {
 400         struct skel_fsync_state *state =
 401             tevent_req_data(req, struct skel_fsync_state);
 402
 403         if (tevent_req_is_unix_error(req, err)) {
 404                 return -1;
 405         }
 406         *err = state->err;
 407         return state->ret;
 408 }
 409
 410 static int skel_stat(vfs_handle_struct *handle, struct smb_filename *smb_fname)
 411 {
 412         return SMB_VFS_NEXT_STAT(handle, smb_fname);
 413 }
 414
 415 static int skel_fstat(vfs_handle_struct *handle, files_struct *fsp,
 416                       SMB_STRUCT_STAT *sbuf)
 417 {
 418         return SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf);
 419 }
 420
 421 static int skel_lstat(vfs_handle_struct *handle,
 422                       struct smb_filename *smb_fname)
 423 {
 424         return SMB_VFS_NEXT_LSTAT(handle, smb_fname);
 425 }
 426
 427 static uint64_t skel_get_alloc_size(struct vfs_handle_struct *handle,
 428                                     struct files_struct *fsp,
 429                                     const SMB_STRUCT_STAT *sbuf)
 430 {
 431         return SMB_VFS_NEXT_GET_ALLOC_SIZE(handle, fsp, sbuf);
 432 }
 433
 434 static int skel_unlink(vfs_handle_struct *handle,
 435                        const struct smb_filename *smb_fname)
 436 {
 437         return SMB_VFS_NEXT_UNLINK(handle, smb_fname);
 438 }
 439
 440 static int skel_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
 441 {
 442         return SMB_VFS_NEXT_CHMOD(handle, path, mode);
 443 }
 444
 445 static int skel_fchmod(vfs_handle_struct *handle, files_struct *fsp,
 446                        mode_t mode)
 447 {
 448         return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
 449 }
 450
 451 static int skel_chown(vfs_handle_struct *handle, const char *path, uid_t uid,
 452                       gid_t gid)
 453 {
 454         return SMB_VFS_NEXT_CHOWN(handle, path, uid, gid);
 455 }
 456
 457 static int skel_fchown(vfs_handle_struct *handle, files_struct *fsp,
 458                        uid_t uid, gid_t gid)
 459 {
 460         return SMB_VFS_NEXT_FCHOWN(handle, fsp, uid, gid);
 461 }
 462
 463 static int skel_lchown(vfs_handle_struct *handle, const char *path, uid_t uid,
 464                        gid_t gid)
 465 {
 466         return SMB_VFS_NEXT_LCHOWN(handle, path, uid, gid);
 467 }
 468
 469 static int skel_chdir(vfs_handle_struct *handle, const char *path)
 470 {
 471         return SMB_VFS_NEXT_CHDIR(handle, path);
 472 }
 473
 474 static char *skel_getwd(vfs_handle_struct *handle)
 475 {
 476         return SMB_VFS_NEXT_GETWD(handle);
 477 }
 478
 479 static int skel_ntimes(vfs_handle_struct *handle,
 480                        const struct smb_filename *smb_fname,
 481                        struct smb_file_time *ft)
 482 {
 483         return SMB_VFS_NEXT_NTIMES(handle, smb_fname, ft);
 484 }
 485
 486 static int skel_ftruncate(vfs_handle_struct *handle, files_struct *fsp,
 487                           off_t offset)
 488 {
 489         return SMB_VFS_NEXT_FTRUNCATE(handle, fsp, offset);
 490 }
 491
 492 static int skel_fallocate(vfs_handle_struct *handle, files_struct *fsp,
 493                           uint32_t mode, off_t offset, off_t len)
 494 {
 495         return SMB_VFS_NEXT_FALLOCATE(handle, fsp, mode, offset, len);
 496 }
 497
 498 static bool skel_lock(vfs_handle_struct *handle, files_struct *fsp, int op,
 499                       off_t offset, off_t count, int type)
 500 {
 501         return SMB_VFS_NEXT_LOCK(handle, fsp, op, offset, count, type);
 502 }
 503
 504 static int skel_kernel_flock(struct vfs_handle_struct *handle,
 505                              struct files_struct *fsp, uint32 share_mode,
 506                              uint32 access_mask)
 507 {
 508         return SMB_VFS_NEXT_KERNEL_FLOCK(handle, fsp, share_mode, access_mask);
 509 }
 510
 511 static int skel_linux_setlease(struct vfs_handle_struct *handle,
 512                                struct files_struct *fsp, int leasetype)
 513 {
 514         return SMB_VFS_NEXT_LINUX_SETLEASE(handle, fsp, leasetype);
 515 }
 516
 517 static bool skel_getlock(vfs_handle_struct *handle, files_struct *fsp,
 518                          off_t *poffset, off_t *pcount, int *ptype,
 519                          pid_t *ppid)
 520 {
 521         return SMB_VFS_NEXT_GETLOCK(handle, fsp, poffset, pcount, ptype, ppid);
 522 }
 523
 524 static int skel_symlink(vfs_handle_struct *handle, const char *oldpath,
 525                         const char *newpath)
 526 {
 527         return SMB_VFS_NEXT_SYMLINK(handle, oldpath, newpath);
 528 }
 529
 530 static int skel_vfs_readlink(vfs_handle_struct *handle, const char *path,
 531                              char *buf, size_t bufsiz)
 532 {
 533         return SMB_VFS_NEXT_READLINK(handle, path, buf, bufsiz);
 534 }
 535
 536 static int skel_link(vfs_handle_struct *handle, const char *oldpath,
 537                      const char *newpath)
 538 {
 539         return SMB_VFS_NEXT_LINK(handle, oldpath, newpath);
 540 }
 541
 542 static int skel_mknod(vfs_handle_struct *handle, const char *path, mode_t mode,
 543                       SMB_DEV_T dev)
 544 {
 545         return SMB_VFS_NEXT_MKNOD(handle, path, mode, dev);
 546 }
 547
 548 static char *skel_realpath(vfs_handle_struct *handle, const char *path)
 549 {
 550         return SMB_VFS_NEXT_REALPATH(handle, path);
 551 }
 552
 553 static NTSTATUS skel_notify_watch(struct vfs_handle_struct *handle,
 554                                   struct sys_notify_context *ctx,
 555                                   const char *path,
 556                                   uint32_t *filter,
 557                                   uint32_t *subdir_filter,
 558                                   void (*callback) (struct sys_notify_context *ctx,
 559                                                     void *private_data,
 560                                                     struct notify_event *ev),
 561                                   void *private_data, void *handle_p)
 562 {
 563         return SMB_VFS_NEXT_NOTIFY_WATCH(handle, ctx, path,
 564                                          filter, subdir_filter, callback,
 565                                          private_data, handle_p);
 566 }
 567
 568 static int skel_chflags(vfs_handle_struct *handle, const char *path,
 569                         uint flags)
 570 {
 571         return SMB_VFS_NEXT_CHFLAGS(handle, path, flags);
 572 }
 573
 574 static struct file_id skel_file_id_create(vfs_handle_struct *handle,
 575                                           const SMB_STRUCT_STAT *sbuf)
 576 {
 577         return SMB_VFS_NEXT_FILE_ID_CREATE(handle, sbuf);
 578 }
 579
 580 struct skel_cc_state {
 581         struct vfs_handle_struct *handle;
 582         off_t copied;
 583 };
 584 static void skel_copy_chunk_done(struct tevent_req *subreq);
 585
 586 static struct tevent_req *skel_copy_chunk_send(struct vfs_handle_struct *handle,
 587                                                TALLOC_CTX *mem_ctx,
 588                                                struct tevent_context *ev,
 589                                                struct files_struct *src_fsp,
 590                                                off_t src_off,
 591                                                struct files_struct *dest_fsp,
 592                                                off_t dest_off,
 593                                                off_t num)
 594 {
 595         struct tevent_req *req;
 596         struct tevent_req *subreq;
 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         cc_state->handle = handle;
 605         subreq = SMB_VFS_NEXT_COPY_CHUNK_SEND(handle, cc_state, ev,
 606                                               src_fsp, src_off,
 607                                               dest_fsp, dest_off, num);
 608         if (tevent_req_nomem(subreq, req)) {
 609                 return tevent_req_post(req, ev);
 610         }
 611
 612         tevent_req_set_callback(subreq, skel_copy_chunk_done, req);
 613         return req;
 614 }
 615
 616 static void skel_copy_chunk_done(struct tevent_req *subreq)
 617 {
 618         struct tevent_req *req = tevent_req_callback_data(
 619                 subreq, struct tevent_req);
 620         struct skel_cc_state *cc_state
 621                         = tevent_req_data(req, struct skel_cc_state);
 622         NTSTATUS status;
 623
 624         status = SMB_VFS_NEXT_COPY_CHUNK_RECV(cc_state->handle,
 625                                               subreq,
 626                                               &cc_state->copied);
 627         TALLOC_FREE(subreq);
 628         if (tevent_req_nterror(req, status)) {
 629                 return;
 630         }
 631         tevent_req_done(req);
 632 }
 633
 634 static NTSTATUS skel_copy_chunk_recv(struct vfs_handle_struct *handle,
 635                                      struct tevent_req *req,
 636                                      off_t *copied)
 637 {
 638         struct skel_cc_state *cc_state
 639                         = tevent_req_data(req, struct skel_cc_state);
 640         NTSTATUS status;
 641
 642         *copied = cc_state->copied;
 643         if (tevent_req_is_nterror(req, &status)) {
 644                 tevent_req_received(req);
 645                 return status;
 646         }
 647
 648         tevent_req_received(req);
 649         return NT_STATUS_OK;
 650 }
 651
 652 static NTSTATUS skel_get_compression(struct vfs_handle_struct *handle,
 653                                      TALLOC_CTX *mem_ctx,
 654                                      struct files_struct *fsp,
 655                                      struct smb_filename *smb_fname,
 656                                      uint16_t *_compression_fmt)
 657 {
 658         return SMB_VFS_NEXT_GET_COMPRESSION(handle, mem_ctx, fsp, smb_fname,
 659                                             _compression_fmt);
 660 }
 661
 662 static NTSTATUS skel_set_compression(struct vfs_handle_struct *handle,
 663                                      TALLOC_CTX *mem_ctx,
 664                                      struct files_struct *fsp,
 665                                      uint16_t compression_fmt)
 666 {
 667         return SMB_VFS_NEXT_SET_COMPRESSION(handle, mem_ctx, fsp,
 668                                             compression_fmt);
 669 }
 670
 671 static NTSTATUS skel_streaminfo(struct vfs_handle_struct *handle,
 672                                 struct files_struct *fsp,
 673                                 const char *fname,
 674                                 TALLOC_CTX *mem_ctx,
 675                                 unsigned int *num_streams,
 676                                 struct stream_struct **streams)
 677 {
 678         return SMB_VFS_NEXT_STREAMINFO(handle,
 679                                        fsp,
 680                                        fname, mem_ctx, num_streams, streams);
 681 }
 682
 683 static int skel_get_real_filename(struct vfs_handle_struct *handle,
 684                                   const char *path,
 685                                   const char *name,
 686                                   TALLOC_CTX *mem_ctx, char **found_name)
 687 {
 688         return SMB_VFS_NEXT_GET_REAL_FILENAME(handle,
 689                                               path, name, mem_ctx, found_name);
 690 }
 691
 692 static const char *skel_connectpath(struct vfs_handle_struct *handle,
 693                                     const char *filename)
 694 {
 695         return SMB_VFS_NEXT_CONNECTPATH(handle, filename);
 696 }
 697
 698 static NTSTATUS skel_brl_lock_windows(struct vfs_handle_struct *handle,
 699                                       struct byte_range_lock *br_lck,
 700                                       struct lock_struct *plock,
 701                                       bool blocking_lock)
 702 {
 703         return SMB_VFS_NEXT_BRL_LOCK_WINDOWS(handle,
 704                                              br_lck, plock, blocking_lock);
 705 }
 706
 707 static bool skel_brl_unlock_windows(struct vfs_handle_struct *handle,
 708                                     struct messaging_context *msg_ctx,
 709                                     struct byte_range_lock *br_lck,
 710                                     const struct lock_struct *plock)
 711 {
 712         return SMB_VFS_NEXT_BRL_UNLOCK_WINDOWS(handle, msg_ctx, br_lck, plock);
 713 }
 714
 715 static bool skel_brl_cancel_windows(struct vfs_handle_struct *handle,
 716                                     struct byte_range_lock *br_lck,
 717                                     struct lock_struct *plock)
 718 {
 719         return SMB_VFS_NEXT_BRL_CANCEL_WINDOWS(handle, br_lck, plock);
 720 }
 721
 722 static bool skel_strict_lock(struct vfs_handle_struct *handle,
 723                              struct files_struct *fsp,
 724                              struct lock_struct *plock)
 725 {
 726         return SMB_VFS_NEXT_STRICT_LOCK(handle, fsp, plock);
 727 }
 728
 729 static void skel_strict_unlock(struct vfs_handle_struct *handle,
 730                                struct files_struct *fsp,
 731                                struct lock_struct *plock)
 732 {
 733         SMB_VFS_NEXT_STRICT_UNLOCK(handle, fsp, plock);
 734 }
 735
 736 static NTSTATUS skel_translate_name(struct vfs_handle_struct *handle,
 737                                     const char *mapped_name,
 738                                     enum vfs_translate_direction direction,
 739                                     TALLOC_CTX *mem_ctx, char **pmapped_name)
 740 {
 741         return SMB_VFS_NEXT_TRANSLATE_NAME(handle, mapped_name, direction,
 742                                            mem_ctx, pmapped_name);
 743 }
 744
 745 static NTSTATUS skel_fsctl(struct vfs_handle_struct *handle,
 746                            struct files_struct *fsp,
 747                            TALLOC_CTX *ctx,
 748                            uint32_t function,
 749                            uint16_t req_flags,  /* Needed for UNICODE ... */
 750                            const uint8_t *_in_data,
 751                            uint32_t in_len,
 752                            uint8_t ** _out_data,
 753                            uint32_t max_out_len, uint32_t *out_len)
 754 {
 755         return SMB_VFS_NEXT_FSCTL(handle,
 756                                   fsp,
 757                                   ctx,
 758                                   function,
 759                                   req_flags,
 760                                   _in_data,
 761                                   in_len, _out_data, max_out_len, out_len);
 762 }
 763
 764 static NTSTATUS skel_readdir_attr(struct vfs_handle_struct *handle,
 765                                   const struct smb_filename *fname,
 766                                   TALLOC_CTX *mem_ctx,
 767                                   struct readdir_attr_data **pattr_data)
 768 {
 769         return SMB_VFS_NEXT_READDIR_ATTR(handle, fname, mem_ctx, pattr_data);
 770 }
 771
 772 static NTSTATUS skel_fget_nt_acl(vfs_handle_struct *handle, files_struct *fsp,
 773                                  uint32 security_info,
 774                                  TALLOC_CTX *mem_ctx,
 775                                  struct security_descriptor **ppdesc)
 776 {
 777         return SMB_VFS_NEXT_FGET_NT_ACL(handle, fsp, security_info, mem_ctx,
 778                                         ppdesc);
 779 }
 780
 781 static NTSTATUS skel_get_nt_acl(vfs_handle_struct *handle,
 782                                 const char *name, uint32 security_info,
 783                                 TALLOC_CTX *mem_ctx,
 784                                 struct security_descriptor **ppdesc)
 785 {
 786         return SMB_VFS_NEXT_GET_NT_ACL(handle, name, security_info, mem_ctx,
 787                                        ppdesc);
 788 }
 789
 790 static NTSTATUS skel_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp,
 791                                  uint32 security_info_sent,
 792                                  const struct security_descriptor *psd)
 793 {
 794         return SMB_VFS_NEXT_FSET_NT_ACL(handle, fsp, security_info_sent, psd);
 795 }
 796
 797 static int skel_chmod_acl(vfs_handle_struct *handle, const char *name,
 798                           mode_t mode)
 799 {
 800         return SMB_VFS_NEXT_CHMOD_ACL(handle, name, mode);
 801 }
 802
 803 static int skel_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp,
 804                            mode_t mode)
 805 {
 806         return SMB_VFS_NEXT_FCHMOD_ACL(handle, fsp, mode);
 807 }
 808
 809 static SMB_ACL_T skel_sys_acl_get_file(vfs_handle_struct *handle,
 810                                        const char *path_p,
 811                                        SMB_ACL_TYPE_T type,
 812                                        TALLOC_CTX *mem_ctx)
 813 {
 814         return SMB_VFS_NEXT_SYS_ACL_GET_FILE(handle, path_p, type, mem_ctx);
 815 }
 816
 817 static SMB_ACL_T skel_sys_acl_get_fd(vfs_handle_struct *handle,
 818                                      files_struct *fsp, TALLOC_CTX *mem_ctx)
 819 {
 820         return SMB_VFS_NEXT_SYS_ACL_GET_FD(handle, fsp, mem_ctx);
 821 }
 822
 823 static int skel_sys_acl_blob_get_file(vfs_handle_struct *handle,
 824                                       const char *path_p, TALLOC_CTX *mem_ctx,
 825                                       char **blob_description, DATA_BLOB *blob)
 826 {
 827         return SMB_VFS_NEXT_SYS_ACL_BLOB_GET_FILE(handle, path_p, mem_ctx,
 828                                                   blob_description, blob);
 829 }
 830
 831 static int skel_sys_acl_blob_get_fd(vfs_handle_struct *handle,
 832                                     files_struct *fsp, TALLOC_CTX *mem_ctx,
 833                                     char **blob_description, DATA_BLOB *blob)
 834 {
 835         return SMB_VFS_NEXT_SYS_ACL_BLOB_GET_FD(handle, fsp, mem_ctx,
 836                                                 blob_description, blob);
 837 }
 838
 839 static int skel_sys_acl_set_file(vfs_handle_struct *handle, const char *name,
 840                                  SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl)
 841 {
 842         return SMB_VFS_NEXT_SYS_ACL_SET_FILE(handle, name, acltype, theacl);
 843 }
 844
 845 static int skel_sys_acl_set_fd(vfs_handle_struct *handle, files_struct *fsp,
 846                                SMB_ACL_T theacl)
 847 {
 848         return SMB_VFS_NEXT_SYS_ACL_SET_FD(handle, fsp, theacl);
 849 }
 850
 851 static int skel_sys_acl_delete_def_file(vfs_handle_struct *handle,
 852                                         const char *path)
 853 {
 854         return SMB_VFS_NEXT_SYS_ACL_DELETE_DEF_FILE(handle, path);
 855 }
 856
 857 static ssize_t skel_getxattr(vfs_handle_struct *handle, const char *path,
 858                              const char *name, void *value, size_t size)
 859 {
 860         return SMB_VFS_NEXT_GETXATTR(handle, path, name, value, size);
 861 }
 862
 863 static ssize_t skel_fgetxattr(vfs_handle_struct *handle,
 864                               struct files_struct *fsp, const char *name,
 865                               void *value, size_t size)
 866 {
 867         return SMB_VFS_NEXT_FGETXATTR(handle, fsp, name, value, size);
 868 }
 869
 870 static ssize_t skel_listxattr(vfs_handle_struct *handle, const char *path,
 871                               char *list, size_t size)
 872 {
 873         return SMB_VFS_NEXT_LISTXATTR(handle, path, list, size);
 874 }
 875
 876 static ssize_t skel_flistxattr(vfs_handle_struct *handle,
 877                                struct files_struct *fsp, char *list,
 878                                size_t size)
 879 {
 880         return SMB_VFS_NEXT_FLISTXATTR(handle, fsp, list, size);
 881 }
 882
 883 static int skel_removexattr(vfs_handle_struct *handle, const char *path,
 884                             const char *name)
 885 {
 886         return SMB_VFS_NEXT_REMOVEXATTR(handle, path, name);
 887 }
 888
 889 static int skel_fremovexattr(vfs_handle_struct *handle,
 890                              struct files_struct *fsp, const char *name)
 891 {
 892         return SMB_VFS_NEXT_FREMOVEXATTR(handle, fsp, name);
 893 }
 894
 895 static int skel_setxattr(vfs_handle_struct *handle, const char *path,
 896                          const char *name, const void *value, size_t size,
 897                          int flags)
 898 {
 899         return SMB_VFS_NEXT_SETXATTR(handle, path, name, value, size, flags);
 900 }
 901
 902 static int skel_fsetxattr(vfs_handle_struct *handle, struct files_struct *fsp,
 903                           const char *name, const void *value, size_t size,
 904                           int flags)
 905 {
 906         return SMB_VFS_NEXT_FSETXATTR(handle, fsp, name, value, size, flags);
 907 }
 908
 909 static bool skel_aio_force(struct vfs_handle_struct *handle,
 910                            struct files_struct *fsp)
 911 {
 912         return SMB_VFS_NEXT_AIO_FORCE(handle, fsp);
 913 }
 914
 915 static bool skel_is_offline(struct vfs_handle_struct *handle,
 916                             const struct smb_filename *fname,
 917                             SMB_STRUCT_STAT *sbuf)
 918 {
 919         return SMB_VFS_NEXT_IS_OFFLINE(handle, fname, sbuf);
 920 }
 921
 922 static int skel_set_offline(struct vfs_handle_struct *handle,
 923                             const struct smb_filename *fname)
 924 {
 925         return SMB_VFS_NEXT_SET_OFFLINE(handle, fname);
 926 }
 927
 928 /* VFS operations structure */
 929
 930 struct vfs_fn_pointers skel_transparent_fns = {
 931         /* Disk operations */
 932
 933         .connect_fn = skel_connect,
 934         .disconnect_fn = skel_disconnect,
 935         .disk_free_fn = skel_disk_free,
 936         .get_quota_fn = skel_get_quota,
 937         .set_quota_fn = skel_set_quota,
 938         .get_shadow_copy_data_fn = skel_get_shadow_copy_data,
 939         .statvfs_fn = skel_statvfs,
 940         .fs_capabilities_fn = skel_fs_capabilities,
 941         .get_dfs_referrals_fn = skel_get_dfs_referrals,
 942
 943         /* Directory operations */
 944
 945         .opendir_fn = skel_opendir,
 946         .fdopendir_fn = skel_fdopendir,
 947         .readdir_fn = skel_readdir,
 948         .seekdir_fn = skel_seekdir,
 949         .telldir_fn = skel_telldir,
 950         .rewind_dir_fn = skel_rewind_dir,
 951         .mkdir_fn = skel_mkdir,
 952         .rmdir_fn = skel_rmdir,
 953         .closedir_fn = skel_closedir,
 954         .init_search_op_fn = skel_init_search_op,
 955
 956         /* File operations */
 957
 958         .open_fn = skel_open,
 959         .create_file_fn = skel_create_file,
 960         .close_fn = skel_close_fn,
 961         .read_fn = skel_vfs_read,
 962         .pread_fn = skel_pread,
 963         .pread_send_fn = skel_pread_send,
 964         .pread_recv_fn = skel_pread_recv,
 965         .write_fn = skel_write,
 966         .pwrite_fn = skel_pwrite,
 967         .pwrite_send_fn = skel_pwrite_send,
 968         .pwrite_recv_fn = skel_pwrite_recv,
 969         .lseek_fn = skel_lseek,
 970         .sendfile_fn = skel_sendfile,
 971         .recvfile_fn = skel_recvfile,
 972         .rename_fn = skel_rename,
 973         .fsync_fn = skel_fsync,
 974         .fsync_send_fn = skel_fsync_send,
 975         .fsync_recv_fn = skel_fsync_recv,
 976         .stat_fn = skel_stat,
 977         .fstat_fn = skel_fstat,
 978         .lstat_fn = skel_lstat,
 979         .get_alloc_size_fn = skel_get_alloc_size,
 980         .unlink_fn = skel_unlink,
 981         .chmod_fn = skel_chmod,
 982         .fchmod_fn = skel_fchmod,
 983         .chown_fn = skel_chown,
 984         .fchown_fn = skel_fchown,
 985         .lchown_fn = skel_lchown,
 986         .chdir_fn = skel_chdir,
 987         .getwd_fn = skel_getwd,
 988         .ntimes_fn = skel_ntimes,
 989         .ftruncate_fn = skel_ftruncate,
 990         .fallocate_fn = skel_fallocate,
 991         .lock_fn = skel_lock,
 992         .kernel_flock_fn = skel_kernel_flock,
 993         .linux_setlease_fn = skel_linux_setlease,
 994         .getlock_fn = skel_getlock,
 995         .symlink_fn = skel_symlink,
 996         .readlink_fn = skel_vfs_readlink,
 997         .link_fn = skel_link,
 998         .mknod_fn = skel_mknod,
 999         .realpath_fn = skel_realpath,
1000         .notify_watch_fn = skel_notify_watch,
1001         .chflags_fn = skel_chflags,
1002         .file_id_create_fn = skel_file_id_create,
1003         .copy_chunk_send_fn = skel_copy_chunk_send,
1004         .copy_chunk_recv_fn = skel_copy_chunk_recv,
1005         .get_compression_fn = skel_get_compression,
1006         .set_compression_fn = skel_set_compression,
1007
1008         .streaminfo_fn = skel_streaminfo,
1009         .get_real_filename_fn = skel_get_real_filename,
1010         .connectpath_fn = skel_connectpath,
1011         .brl_lock_windows_fn = skel_brl_lock_windows,
1012         .brl_unlock_windows_fn = skel_brl_unlock_windows,
1013         .brl_cancel_windows_fn = skel_brl_cancel_windows,
1014         .strict_lock_fn = skel_strict_lock,
1015         .strict_unlock_fn = skel_strict_unlock,
1016         .translate_name_fn = skel_translate_name,
1017         .fsctl_fn = skel_fsctl,
1018         .readdir_attr_fn = skel_readdir_attr,
1019
1020         /* NT ACL operations. */
1021
1022         .fget_nt_acl_fn = skel_fget_nt_acl,
1023         .get_nt_acl_fn = skel_get_nt_acl,
1024         .fset_nt_acl_fn = skel_fset_nt_acl,
1025
1026         /* POSIX ACL operations. */
1027
1028         .chmod_acl_fn = skel_chmod_acl,
1029         .fchmod_acl_fn = skel_fchmod_acl,
1030
1031         .sys_acl_get_file_fn = skel_sys_acl_get_file,
1032         .sys_acl_get_fd_fn = skel_sys_acl_get_fd,
1033         .sys_acl_blob_get_file_fn = skel_sys_acl_blob_get_file,
1034         .sys_acl_blob_get_fd_fn = skel_sys_acl_blob_get_fd,
1035         .sys_acl_set_file_fn = skel_sys_acl_set_file,
1036         .sys_acl_set_fd_fn = skel_sys_acl_set_fd,
1037         .sys_acl_delete_def_file_fn = skel_sys_acl_delete_def_file,
1038
1039         /* EA operations. */
1040         .getxattr_fn = skel_getxattr,
1041         .fgetxattr_fn = skel_fgetxattr,
1042         .listxattr_fn = skel_listxattr,
1043         .flistxattr_fn = skel_flistxattr,
1044         .removexattr_fn = skel_removexattr,
1045         .fremovexattr_fn = skel_fremovexattr,
1046         .setxattr_fn = skel_setxattr,
1047         .fsetxattr_fn = skel_fsetxattr,
1048
1049         /* aio operations */
1050         .aio_force_fn = skel_aio_force,
1051
1052         /* offline operations */
1053         .is_offline_fn = skel_is_offline,
1054         .set_offline_fn = skel_set_offline
1055 };
1056
1057 NTSTATUS vfs_skel_transparent_init(void)
1058 {
1059         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "skel_transparent",
1060                                 &skel_transparent_fns);
1061 }