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                                bool small_query, uint64_t *bsize,
  53                                uint64_t *dfree, uint64_t *dsize)
  54 {
  55         return SMB_VFS_NEXT_DISK_FREE(handle, path, small_query, bsize,
  56                                       dfree, dsize);
  57 }
  58
  59 static int skel_get_quota(vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype,
  60                           unid_t id, SMB_DISK_QUOTA *dq)
  61 {
  62         return SMB_VFS_NEXT_GET_QUOTA(handle, qtype, id, dq);
  63 }
  64
  65 static int skel_set_quota(vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype,
  66                           unid_t id, SMB_DISK_QUOTA *dq)
  67 {
  68         return SMB_VFS_NEXT_SET_QUOTA(handle, qtype, id, dq);
  69 }
  70
  71 static int skel_get_shadow_copy_data(vfs_handle_struct *handle,
  72                                      files_struct *fsp,
  73                                      struct shadow_copy_data *shadow_copy_data,
  74                                      bool labels)
  75 {
  76         return SMB_VFS_NEXT_GET_SHADOW_COPY_DATA(handle, fsp, shadow_copy_data,
  77                                                  labels);
  78 }
  79
  80 static int skel_statvfs(struct vfs_handle_struct *handle, const char *path,
  81                         struct vfs_statvfs_struct *statbuf)
  82 {
  83         return SMB_VFS_NEXT_STATVFS(handle, path, statbuf);
  84 }
  85
  86 static uint32_t skel_fs_capabilities(struct vfs_handle_struct *handle,
  87                                      enum timestamp_set_resolution *p_ts_res)
  88 {
  89         return SMB_VFS_NEXT_FS_CAPABILITIES(handle, p_ts_res);
  90 }
  91
  92 static NTSTATUS skel_get_dfs_referrals(struct vfs_handle_struct *handle,
  93                                        struct dfs_GetDFSReferral *r)
  94 {
  95         return SMB_VFS_NEXT_GET_DFS_REFERRALS(handle, r);
  96 }
  97
  98 static DIR *skel_opendir(vfs_handle_struct *handle, const char *fname,
  99                          const char *mask, uint32 attr)
 100 {
 101         return SMB_VFS_NEXT_OPENDIR(handle, fname, mask, attr);
 102 }
 103
 104 static DIR *skel_fdopendir(vfs_handle_struct *handle, files_struct *fsp,
 105                            const char *mask, uint32 attr)
 106 {
 107         return SMB_VFS_NEXT_FDOPENDIR(handle, fsp, mask, attr);
 108 }
 109
 110 static struct dirent *skel_readdir(vfs_handle_struct *handle,
 111                                    DIR *dirp, SMB_STRUCT_STAT *sbuf)
 112 {
 113         return SMB_VFS_NEXT_READDIR(handle, dirp, sbuf);
 114 }
 115
 116 static void skel_seekdir(vfs_handle_struct *handle, DIR *dirp, long offset)
 117 {
 118         SMB_VFS_NEXT_SEEKDIR(handle, dirp, offset);
 119 }
 120
 121 static long skel_telldir(vfs_handle_struct *handle, DIR *dirp)
 122 {
 123         return SMB_VFS_NEXT_TELLDIR(handle, dirp);
 124 }
 125
 126 static void skel_rewind_dir(vfs_handle_struct *handle, DIR *dirp)
 127 {
 128         SMB_VFS_NEXT_REWINDDIR(handle, dirp);
 129 }
 130
 131 static int skel_mkdir(vfs_handle_struct *handle, const char *path, mode_t mode)
 132 {
 133         return SMB_VFS_NEXT_MKDIR(handle, path, mode);
 134 }
 135
 136 static int skel_rmdir(vfs_handle_struct *handle, const char *path)
 137 {
 138         return SMB_VFS_NEXT_RMDIR(handle, path);
 139 }
 140
 141 static int skel_closedir(vfs_handle_struct *handle, DIR *dir)
 142 {
 143         return SMB_VFS_NEXT_CLOSEDIR(handle, dir);
 144 }
 145
 146 static void skel_init_search_op(struct vfs_handle_struct *handle, DIR *dirp)
 147 {
 148         SMB_VFS_NEXT_INIT_SEARCH_OP(handle, dirp);
 149 }
 150
 151 static int skel_open(vfs_handle_struct *handle, struct smb_filename *smb_fname,
 152                      files_struct *fsp, int flags, mode_t mode)
 153 {
 154         return SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
 155 }
 156
 157 static NTSTATUS skel_create_file(struct vfs_handle_struct *handle,
 158                                  struct smb_request *req,
 159                                  uint16_t root_dir_fid,
 160                                  struct smb_filename *smb_fname,
 161                                  uint32_t access_mask,
 162                                  uint32_t share_access,
 163                                  uint32_t create_disposition,
 164                                  uint32_t create_options,
 165                                  uint32_t file_attributes,
 166                                  uint32_t oplock_request,
 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 {
 173         return SMB_VFS_NEXT_CREATE_FILE(handle,
 174                                         req,
 175                                         root_dir_fid,
 176                                         smb_fname,
 177                                         access_mask,
 178                                         share_access,
 179                                         create_disposition,
 180                                         create_options,
 181                                         file_attributes,
 182                                         oplock_request,
 183                                         allocation_size,
 184                                         private_flags,
 185                                         sd, ea_list, result, pinfo);
 186 }
 187
 188 static int skel_close_fn(vfs_handle_struct *handle, files_struct *fsp)
 189 {
 190         return SMB_VFS_NEXT_CLOSE(handle, fsp);
 191 }
 192
 193 static ssize_t skel_vfs_read(vfs_handle_struct *handle, files_struct *fsp,
 194                              void *data, size_t n)
 195 {
 196         return SMB_VFS_NEXT_READ(handle, fsp, data, n);
 197 }
 198
 199 static ssize_t skel_pread(vfs_handle_struct *handle, files_struct *fsp,
 200                           void *data, size_t n, off_t offset)
 201 {
 202         return SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
 203 }
 204
 205 struct skel_pread_state {
 206         ssize_t ret;
 207         int err;
 208 };
 209
 210 static void skel_pread_done(struct tevent_req *subreq);
 211
 212 static struct tevent_req *skel_pread_send(struct vfs_handle_struct *handle,
 213                                           TALLOC_CTX *mem_ctx,
 214                                           struct tevent_context *ev,
 215                                           struct files_struct *fsp,
 216                                           void *data, size_t n, off_t offset)
 217 {
 218         struct tevent_req *req, *subreq;
 219         struct skel_pread_state *state;
 220
 221         req = tevent_req_create(mem_ctx, &state, struct skel_pread_state);
 222         if (req == NULL) {
 223                 return NULL;
 224         }
 225         subreq = SMB_VFS_NEXT_PREAD_SEND(state, ev, handle, fsp, data,
 226                                          n, offset);
 227         if (tevent_req_nomem(subreq, req)) {
 228                 return tevent_req_post(req, ev);
 229         }
 230         tevent_req_set_callback(subreq, skel_pread_done, req);
 231         return req;
 232 }
 233
 234 static void skel_pread_done(struct tevent_req *subreq)
 235 {
 236         struct tevent_req *req =
 237             tevent_req_callback_data(subreq, struct tevent_req);
 238         struct skel_pread_state *state =
 239             tevent_req_data(req, struct skel_pread_state);
 240
 241         state->ret = SMB_VFS_PREAD_RECV(subreq, &state->err);
 242         TALLOC_FREE(subreq);
 243         tevent_req_done(req);
 244 }
 245
 246 static ssize_t skel_pread_recv(struct tevent_req *req, int *err)
 247 {
 248         struct skel_pread_state *state =
 249             tevent_req_data(req, struct skel_pread_state);
 250
 251         if (tevent_req_is_unix_error(req, err)) {
 252                 return -1;
 253         }
 254         *err = state->err;
 255         return state->ret;
 256 }
 257
 258 static ssize_t skel_write(vfs_handle_struct *handle, files_struct *fsp,
 259                           const void *data, size_t n)
 260 {
 261         return SMB_VFS_NEXT_WRITE(handle, fsp, data, n);
 262 }
 263
 264 static ssize_t skel_pwrite(vfs_handle_struct *handle, files_struct *fsp,
 265                            const void *data, size_t n, off_t offset)
 266 {
 267         return SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
 268 }
 269
 270 struct skel_pwrite_state {
 271         ssize_t ret;
 272         int err;
 273 };
 274
 275 static void skel_pwrite_done(struct tevent_req *subreq);
 276
 277 static struct tevent_req *skel_pwrite_send(struct vfs_handle_struct *handle,
 278                                            TALLOC_CTX *mem_ctx,
 279                                            struct tevent_context *ev,
 280                                            struct files_struct *fsp,
 281                                            const void *data,
 282                                            size_t n, off_t offset)
 283 {
 284         struct tevent_req *req, *subreq;
 285         struct skel_pwrite_state *state;
 286
 287         req = tevent_req_create(mem_ctx, &state, struct skel_pwrite_state);
 288         if (req == NULL) {
 289                 return NULL;
 290         }
 291         subreq = SMB_VFS_NEXT_PWRITE_SEND(state, ev, handle, fsp, data,
 292                                           n, offset);
 293         if (tevent_req_nomem(subreq, req)) {
 294                 return tevent_req_post(req, ev);
 295         }
 296         tevent_req_set_callback(subreq, skel_pwrite_done, req);
 297         return req;
 298 }
 299
 300 static void skel_pwrite_done(struct tevent_req *subreq)
 301 {
 302         struct tevent_req *req =
 303             tevent_req_callback_data(subreq, struct tevent_req);
 304         struct skel_pwrite_state *state =
 305             tevent_req_data(req, struct skel_pwrite_state);
 306
 307         state->ret = SMB_VFS_PWRITE_RECV(subreq, &state->err);
 308         TALLOC_FREE(subreq);
 309         tevent_req_done(req);
 310 }
 311
 312 static ssize_t skel_pwrite_recv(struct tevent_req *req, int *err)
 313 {
 314         struct skel_pwrite_state *state =
 315             tevent_req_data(req, struct skel_pwrite_state);
 316
 317         if (tevent_req_is_unix_error(req, err)) {
 318                 return -1;
 319         }
 320         *err = state->err;
 321         return state->ret;
 322 }
 323
 324 static off_t skel_lseek(vfs_handle_struct *handle, files_struct *fsp,
 325                         off_t offset, int whence)
 326 {
 327         return SMB_VFS_NEXT_LSEEK(handle, fsp, offset, whence);
 328 }
 329
 330 static ssize_t skel_sendfile(vfs_handle_struct *handle, int tofd,
 331                              files_struct *fromfsp, const DATA_BLOB *hdr,
 332                              off_t offset, size_t n)
 333 {
 334         return SMB_VFS_NEXT_SENDFILE(handle, tofd, fromfsp, hdr, offset, n);
 335 }
 336
 337 static ssize_t skel_recvfile(vfs_handle_struct *handle, int fromfd,
 338                              files_struct *tofsp, off_t offset, size_t n)
 339 {
 340         return SMB_VFS_NEXT_RECVFILE(handle, fromfd, tofsp, offset, n);
 341 }
 342
 343 static int skel_rename(vfs_handle_struct *handle,
 344                        const struct smb_filename *smb_fname_src,
 345                        const struct smb_filename *smb_fname_dst)
 346 {
 347         return SMB_VFS_NEXT_RENAME(handle, smb_fname_src, smb_fname_dst);
 348 }
 349
 350 static int skel_fsync(vfs_handle_struct *handle, files_struct *fsp)
 351 {
 352         return SMB_VFS_NEXT_FSYNC(handle, fsp);
 353 }
 354
 355 struct skel_fsync_state {
 356         int ret;
 357         int err;
 358 };
 359
 360 static void skel_fsync_done(struct tevent_req *subreq);
 361
 362 static struct tevent_req *skel_fsync_send(struct vfs_handle_struct *handle,
 363                                           TALLOC_CTX *mem_ctx,
 364                                           struct tevent_context *ev,
 365                                           struct files_struct *fsp)
 366 {
 367         struct tevent_req *req, *subreq;
 368         struct skel_fsync_state *state;
 369
 370         req = tevent_req_create(mem_ctx, &state, struct skel_fsync_state);
 371         if (req == NULL) {
 372                 return NULL;
 373         }
 374         subreq = SMB_VFS_NEXT_FSYNC_SEND(state, ev, handle, fsp);
 375         if (tevent_req_nomem(subreq, req)) {
 376                 return tevent_req_post(req, ev);
 377         }
 378         tevent_req_set_callback(subreq, skel_fsync_done, req);
 379         return req;
 380 }
 381
 382 static void skel_fsync_done(struct tevent_req *subreq)
 383 {
 384         struct tevent_req *req =
 385             tevent_req_callback_data(subreq, struct tevent_req);
 386         struct skel_fsync_state *state =
 387             tevent_req_data(req, struct skel_fsync_state);
 388
 389         state->ret = SMB_VFS_FSYNC_RECV(subreq, &state->err);
 390         TALLOC_FREE(subreq);
 391         tevent_req_done(req);
 392 }
 393
 394 static int skel_fsync_recv(struct tevent_req *req, int *err)
 395 {
 396         struct skel_fsync_state *state =
 397             tevent_req_data(req, struct skel_fsync_state);
 398
 399         if (tevent_req_is_unix_error(req, err)) {
 400                 return -1;
 401         }
 402         *err = state->err;
 403         return state->ret;
 404 }
 405
 406 static int skel_stat(vfs_handle_struct *handle, struct smb_filename *smb_fname)
 407 {
 408         return SMB_VFS_NEXT_STAT(handle, smb_fname);
 409 }
 410
 411 static int skel_fstat(vfs_handle_struct *handle, files_struct *fsp,
 412                       SMB_STRUCT_STAT *sbuf)
 413 {
 414         return SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf);
 415 }
 416
 417 static int skel_lstat(vfs_handle_struct *handle,
 418                       struct smb_filename *smb_fname)
 419 {
 420         return SMB_VFS_NEXT_LSTAT(handle, smb_fname);
 421 }
 422
 423 static uint64_t skel_get_alloc_size(struct vfs_handle_struct *handle,
 424                                     struct files_struct *fsp,
 425                                     const SMB_STRUCT_STAT *sbuf)
 426 {
 427         return SMB_VFS_NEXT_GET_ALLOC_SIZE(handle, fsp, sbuf);
 428 }
 429
 430 static int skel_unlink(vfs_handle_struct *handle,
 431                        const struct smb_filename *smb_fname)
 432 {
 433         return SMB_VFS_NEXT_UNLINK(handle, smb_fname);
 434 }
 435
 436 static int skel_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
 437 {
 438         return SMB_VFS_NEXT_CHMOD(handle, path, mode);
 439 }
 440
 441 static int skel_fchmod(vfs_handle_struct *handle, files_struct *fsp,
 442                        mode_t mode)
 443 {
 444         return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
 445 }
 446
 447 static int skel_chown(vfs_handle_struct *handle, const char *path, uid_t uid,
 448                       gid_t gid)
 449 {
 450         return SMB_VFS_NEXT_CHOWN(handle, path, uid, gid);
 451 }
 452
 453 static int skel_fchown(vfs_handle_struct *handle, files_struct *fsp,
 454                        uid_t uid, gid_t gid)
 455 {
 456         return SMB_VFS_NEXT_FCHOWN(handle, fsp, uid, gid);
 457 }
 458
 459 static int skel_lchown(vfs_handle_struct *handle, const char *path, uid_t uid,
 460                        gid_t gid)
 461 {
 462         return SMB_VFS_NEXT_LCHOWN(handle, path, uid, gid);
 463 }
 464
 465 static int skel_chdir(vfs_handle_struct *handle, const char *path)
 466 {
 467         return SMB_VFS_NEXT_CHDIR(handle, path);
 468 }
 469
 470 static char *skel_getwd(vfs_handle_struct *handle)
 471 {
 472         return SMB_VFS_NEXT_GETWD(handle);
 473 }
 474
 475 static int skel_ntimes(vfs_handle_struct *handle,
 476                        const struct smb_filename *smb_fname,
 477                        struct smb_file_time *ft)
 478 {
 479         return SMB_VFS_NEXT_NTIMES(handle, smb_fname, ft);
 480 }
 481
 482 static int skel_ftruncate(vfs_handle_struct *handle, files_struct *fsp,
 483                           off_t offset)
 484 {
 485         return SMB_VFS_NEXT_FTRUNCATE(handle, fsp, offset);
 486 }
 487
 488 static int skel_fallocate(vfs_handle_struct *handle, files_struct *fsp,
 489                           enum vfs_fallocate_mode mode, off_t offset, off_t len)
 490 {
 491         return SMB_VFS_NEXT_FALLOCATE(handle, fsp, mode, offset, len);
 492 }
 493
 494 static bool skel_lock(vfs_handle_struct *handle, files_struct *fsp, int op,
 495                       off_t offset, off_t count, int type)
 496 {
 497         return SMB_VFS_NEXT_LOCK(handle, fsp, op, offset, count, type);
 498 }
 499
 500 static int skel_kernel_flock(struct vfs_handle_struct *handle,
 501                              struct files_struct *fsp, uint32 share_mode,
 502                              uint32 access_mask)
 503 {
 504         return SMB_VFS_NEXT_KERNEL_FLOCK(handle, fsp, share_mode, access_mask);
 505 }
 506
 507 static int skel_linux_setlease(struct vfs_handle_struct *handle,
 508                                struct files_struct *fsp, int leasetype)
 509 {
 510         return SMB_VFS_NEXT_LINUX_SETLEASE(handle, fsp, leasetype);
 511 }
 512
 513 static bool skel_getlock(vfs_handle_struct *handle, files_struct *fsp,
 514                          off_t *poffset, off_t *pcount, int *ptype,
 515                          pid_t *ppid)
 516 {
 517         return SMB_VFS_NEXT_GETLOCK(handle, fsp, poffset, pcount, ptype, ppid);
 518 }
 519
 520 static int skel_symlink(vfs_handle_struct *handle, const char *oldpath,
 521                         const char *newpath)
 522 {
 523         return SMB_VFS_NEXT_SYMLINK(handle, oldpath, newpath);
 524 }
 525
 526 static int skel_vfs_readlink(vfs_handle_struct *handle, const char *path,
 527                              char *buf, size_t bufsiz)
 528 {
 529         return SMB_VFS_NEXT_READLINK(handle, path, buf, bufsiz);
 530 }
 531
 532 static int skel_link(vfs_handle_struct *handle, const char *oldpath,
 533                      const char *newpath)
 534 {
 535         return SMB_VFS_NEXT_LINK(handle, oldpath, newpath);
 536 }
 537
 538 static int skel_mknod(vfs_handle_struct *handle, const char *path, mode_t mode,
 539                       SMB_DEV_T dev)
 540 {
 541         return SMB_VFS_NEXT_MKNOD(handle, path, mode, dev);
 542 }
 543
 544 static char *skel_realpath(vfs_handle_struct *handle, const char *path)
 545 {
 546         return SMB_VFS_NEXT_REALPATH(handle, path);
 547 }
 548
 549 static NTSTATUS skel_notify_watch(struct vfs_handle_struct *handle,
 550                                   struct sys_notify_context *ctx,
 551                                   const char *path,
 552                                   uint32_t *filter,
 553                                   uint32_t *subdir_filter,
 554                                   void (*callback) (struct sys_notify_context *ctx,
 555                                                     void *private_data,
 556                                                     struct notify_event *ev),
 557                                   void *private_data, void *handle_p)
 558 {
 559         return SMB_VFS_NEXT_NOTIFY_WATCH(handle, ctx, path,
 560                                          filter, subdir_filter, callback,
 561                                          private_data, handle_p);
 562 }
 563
 564 static int skel_chflags(vfs_handle_struct *handle, const char *path,
 565                         uint flags)
 566 {
 567         return SMB_VFS_NEXT_CHFLAGS(handle, path, flags);
 568 }
 569
 570 static struct file_id skel_file_id_create(vfs_handle_struct *handle,
 571                                           const SMB_STRUCT_STAT *sbuf)
 572 {
 573         return SMB_VFS_NEXT_FILE_ID_CREATE(handle, sbuf);
 574 }
 575
 576 struct skel_cc_state {
 577         struct vfs_handle_struct *handle;
 578         off_t copied;
 579 };
 580 static void skel_copy_chunk_done(struct tevent_req *subreq);
 581
 582 static struct tevent_req *skel_copy_chunk_send(struct vfs_handle_struct *handle,
 583                                                TALLOC_CTX *mem_ctx,
 584                                                struct tevent_context *ev,
 585                                                struct files_struct *src_fsp,
 586                                                off_t src_off,
 587                                                struct files_struct *dest_fsp,
 588                                                off_t dest_off,
 589                                                off_t num)
 590 {
 591         struct tevent_req *req;
 592         struct tevent_req *subreq;
 593         struct skel_cc_state *cc_state;
 594
 595         req = tevent_req_create(mem_ctx, &cc_state, struct skel_cc_state);
 596         if (req == NULL) {
 597                 return NULL;
 598         }
 599
 600         cc_state->handle = handle;
 601         subreq = SMB_VFS_NEXT_COPY_CHUNK_SEND(handle, cc_state, ev,
 602                                               src_fsp, src_off,
 603                                               dest_fsp, dest_off, num);
 604         if (tevent_req_nomem(subreq, req)) {
 605                 return tevent_req_post(req, ev);
 606         }
 607
 608         tevent_req_set_callback(subreq, skel_copy_chunk_done, req);
 609         return req;
 610 }
 611
 612 static void skel_copy_chunk_done(struct tevent_req *subreq)
 613 {
 614         struct tevent_req *req = tevent_req_callback_data(
 615                 subreq, struct tevent_req);
 616         struct skel_cc_state *cc_state
 617                         = tevent_req_data(req, struct skel_cc_state);
 618         NTSTATUS status;
 619
 620         status = SMB_VFS_NEXT_COPY_CHUNK_RECV(cc_state->handle,
 621                                               subreq,
 622                                               &cc_state->copied);
 623         TALLOC_FREE(subreq);
 624         if (tevent_req_nterror(req, status)) {
 625                 return;
 626         }
 627         tevent_req_done(req);
 628 }
 629
 630 static NTSTATUS skel_copy_chunk_recv(struct vfs_handle_struct *handle,
 631                                      struct tevent_req *req,
 632                                      off_t *copied)
 633 {
 634         struct skel_cc_state *cc_state
 635                         = tevent_req_data(req, struct skel_cc_state);
 636         NTSTATUS status;
 637
 638         *copied = cc_state->copied;
 639         if (tevent_req_is_nterror(req, &status)) {
 640                 tevent_req_received(req);
 641                 return status;
 642         }
 643
 644         tevent_req_received(req);
 645         return NT_STATUS_OK;
 646 }
 647
 648 static NTSTATUS skel_get_compression(struct vfs_handle_struct *handle,
 649                                      TALLOC_CTX *mem_ctx,
 650                                      struct files_struct *fsp,
 651                                      struct smb_filename *smb_fname,
 652                                      uint16_t *_compression_fmt)
 653 {
 654         return SMB_VFS_NEXT_GET_COMPRESSION(handle, mem_ctx, fsp, smb_fname,
 655                                             _compression_fmt);
 656 }
 657
 658 static NTSTATUS skel_set_compression(struct vfs_handle_struct *handle,
 659                                      TALLOC_CTX *mem_ctx,
 660                                      struct files_struct *fsp,
 661                                      uint16_t compression_fmt)
 662 {
 663         return SMB_VFS_NEXT_SET_COMPRESSION(handle, mem_ctx, fsp,
 664                                             compression_fmt);
 665 }
 666
 667 static NTSTATUS skel_streaminfo(struct vfs_handle_struct *handle,
 668                                 struct files_struct *fsp,
 669                                 const char *fname,
 670                                 TALLOC_CTX *mem_ctx,
 671                                 unsigned int *num_streams,
 672                                 struct stream_struct **streams)
 673 {
 674         return SMB_VFS_NEXT_STREAMINFO(handle,
 675                                        fsp,
 676                                        fname, mem_ctx, num_streams, streams);
 677 }
 678
 679 static int skel_get_real_filename(struct vfs_handle_struct *handle,
 680                                   const char *path,
 681                                   const char *name,
 682                                   TALLOC_CTX *mem_ctx, char **found_name)
 683 {
 684         return SMB_VFS_NEXT_GET_REAL_FILENAME(handle,
 685                                               path, name, mem_ctx, found_name);
 686 }
 687
 688 static const char *skel_connectpath(struct vfs_handle_struct *handle,
 689                                     const char *filename)
 690 {
 691         return SMB_VFS_NEXT_CONNECTPATH(handle, filename);
 692 }
 693
 694 static NTSTATUS skel_brl_lock_windows(struct vfs_handle_struct *handle,
 695                                       struct byte_range_lock *br_lck,
 696                                       struct lock_struct *plock,
 697                                       bool blocking_lock,
 698                                       struct blocking_lock_record *blr)
 699 {
 700         return SMB_VFS_NEXT_BRL_LOCK_WINDOWS(handle,
 701                                              br_lck, plock, blocking_lock, blr);
 702 }
 703
 704 static bool skel_brl_unlock_windows(struct vfs_handle_struct *handle,
 705                                     struct messaging_context *msg_ctx,
 706                                     struct byte_range_lock *br_lck,
 707                                     const struct lock_struct *plock)
 708 {
 709         return SMB_VFS_NEXT_BRL_UNLOCK_WINDOWS(handle, msg_ctx, br_lck, plock);
 710 }
 711
 712 static bool skel_brl_cancel_windows(struct vfs_handle_struct *handle,
 713                                     struct byte_range_lock *br_lck,
 714                                     struct lock_struct *plock,
 715                                     struct blocking_lock_record *blr)
 716 {
 717         return SMB_VFS_NEXT_BRL_CANCEL_WINDOWS(handle, br_lck, plock, blr);
 718 }
 719
 720 static bool skel_strict_lock(struct vfs_handle_struct *handle,
 721                              struct files_struct *fsp,
 722                              struct lock_struct *plock)
 723 {
 724         return SMB_VFS_NEXT_STRICT_LOCK(handle, fsp, plock);
 725 }
 726
 727 static void skel_strict_unlock(struct vfs_handle_struct *handle,
 728                                struct files_struct *fsp,
 729                                struct lock_struct *plock)
 730 {
 731         SMB_VFS_NEXT_STRICT_UNLOCK(handle, fsp, plock);
 732 }
 733
 734 static NTSTATUS skel_translate_name(struct vfs_handle_struct *handle,
 735                                     const char *mapped_name,
 736                                     enum vfs_translate_direction direction,
 737                                     TALLOC_CTX *mem_ctx, char **pmapped_name)
 738 {
 739         return SMB_VFS_NEXT_TRANSLATE_NAME(handle, mapped_name, direction,
 740                                            mem_ctx, pmapped_name);
 741 }
 742
 743 static NTSTATUS skel_fsctl(struct vfs_handle_struct *handle,
 744                            struct files_struct *fsp,
 745                            TALLOC_CTX *ctx,
 746                            uint32_t function,
 747                            uint16_t req_flags,  /* Needed for UNICODE ... */
 748                            const uint8_t *_in_data,
 749                            uint32_t in_len,
 750                            uint8_t ** _out_data,
 751                            uint32_t max_out_len, uint32_t *out_len)
 752 {
 753         return SMB_VFS_NEXT_FSCTL(handle,
 754                                   fsp,
 755                                   ctx,
 756                                   function,
 757                                   req_flags,
 758                                   _in_data,
 759                                   in_len, _out_data, max_out_len, out_len);
 760 }
 761
 762 static NTSTATUS skel_fget_nt_acl(vfs_handle_struct *handle, files_struct *fsp,
 763                                  uint32 security_info,
 764                                  TALLOC_CTX *mem_ctx,
 765                                  struct security_descriptor **ppdesc)
 766 {
 767         return SMB_VFS_NEXT_FGET_NT_ACL(handle, fsp, security_info, mem_ctx,
 768                                         ppdesc);
 769 }
 770
 771 static NTSTATUS skel_get_nt_acl(vfs_handle_struct *handle,
 772                                 const char *name, uint32 security_info,
 773                                 TALLOC_CTX *mem_ctx,
 774                                 struct security_descriptor **ppdesc)
 775 {
 776         return SMB_VFS_NEXT_GET_NT_ACL(handle, name, security_info, mem_ctx,
 777                                        ppdesc);
 778 }
 779
 780 static NTSTATUS skel_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp,
 781                                  uint32 security_info_sent,
 782                                  const struct security_descriptor *psd)
 783 {
 784         return SMB_VFS_NEXT_FSET_NT_ACL(handle, fsp, security_info_sent, psd);
 785 }
 786
 787 static int skel_chmod_acl(vfs_handle_struct *handle, const char *name,
 788                           mode_t mode)
 789 {
 790         return SMB_VFS_NEXT_CHMOD_ACL(handle, name, mode);
 791 }
 792
 793 static int skel_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp,
 794                            mode_t mode)
 795 {
 796         return SMB_VFS_NEXT_FCHMOD_ACL(handle, fsp, mode);
 797 }
 798
 799 static SMB_ACL_T skel_sys_acl_get_file(vfs_handle_struct *handle,
 800                                        const char *path_p,
 801                                        SMB_ACL_TYPE_T type,
 802                                        TALLOC_CTX *mem_ctx)
 803 {
 804         return SMB_VFS_NEXT_SYS_ACL_GET_FILE(handle, path_p, type, mem_ctx);
 805 }
 806
 807 static SMB_ACL_T skel_sys_acl_get_fd(vfs_handle_struct *handle,
 808                                      files_struct *fsp, TALLOC_CTX *mem_ctx)
 809 {
 810         return SMB_VFS_NEXT_SYS_ACL_GET_FD(handle, fsp, mem_ctx);
 811 }
 812
 813 static int skel_sys_acl_blob_get_file(vfs_handle_struct *handle,
 814                                       const char *path_p, TALLOC_CTX *mem_ctx,
 815                                       char **blob_description, DATA_BLOB *blob)
 816 {
 817         return SMB_VFS_NEXT_SYS_ACL_BLOB_GET_FILE(handle, path_p, mem_ctx,
 818                                                   blob_description, blob);
 819 }
 820
 821 static int skel_sys_acl_blob_get_fd(vfs_handle_struct *handle,
 822                                     files_struct *fsp, TALLOC_CTX *mem_ctx,
 823                                     char **blob_description, DATA_BLOB *blob)
 824 {
 825         return SMB_VFS_NEXT_SYS_ACL_BLOB_GET_FD(handle, fsp, mem_ctx,
 826                                                 blob_description, blob);
 827 }
 828
 829 static int skel_sys_acl_set_file(vfs_handle_struct *handle, const char *name,
 830                                  SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl)
 831 {
 832         return SMB_VFS_NEXT_SYS_ACL_SET_FILE(handle, name, acltype, theacl);
 833 }
 834
 835 static int skel_sys_acl_set_fd(vfs_handle_struct *handle, files_struct *fsp,
 836                                SMB_ACL_T theacl)
 837 {
 838         return SMB_VFS_NEXT_SYS_ACL_SET_FD(handle, fsp, theacl);
 839 }
 840
 841 static int skel_sys_acl_delete_def_file(vfs_handle_struct *handle,
 842                                         const char *path)
 843 {
 844         return SMB_VFS_NEXT_SYS_ACL_DELETE_DEF_FILE(handle, path);
 845 }
 846
 847 static ssize_t skel_getxattr(vfs_handle_struct *handle, const char *path,
 848                              const char *name, void *value, size_t size)
 849 {
 850         return SMB_VFS_NEXT_GETXATTR(handle, path, name, value, size);
 851 }
 852
 853 static ssize_t skel_fgetxattr(vfs_handle_struct *handle,
 854                               struct files_struct *fsp, const char *name,
 855                               void *value, size_t size)
 856 {
 857         return SMB_VFS_NEXT_FGETXATTR(handle, fsp, name, value, size);
 858 }
 859
 860 static ssize_t skel_listxattr(vfs_handle_struct *handle, const char *path,
 861                               char *list, size_t size)
 862 {
 863         return SMB_VFS_NEXT_LISTXATTR(handle, path, list, size);
 864 }
 865
 866 static ssize_t skel_flistxattr(vfs_handle_struct *handle,
 867                                struct files_struct *fsp, char *list,
 868                                size_t size)
 869 {
 870         return SMB_VFS_NEXT_FLISTXATTR(handle, fsp, list, size);
 871 }
 872
 873 static int skel_removexattr(vfs_handle_struct *handle, const char *path,
 874                             const char *name)
 875 {
 876         return SMB_VFS_NEXT_REMOVEXATTR(handle, path, name);
 877 }
 878
 879 static int skel_fremovexattr(vfs_handle_struct *handle,
 880                              struct files_struct *fsp, const char *name)
 881 {
 882         return SMB_VFS_NEXT_FREMOVEXATTR(handle, fsp, name);
 883 }
 884
 885 static int skel_setxattr(vfs_handle_struct *handle, const char *path,
 886                          const char *name, const void *value, size_t size,
 887                          int flags)
 888 {
 889         return SMB_VFS_NEXT_SETXATTR(handle, path, name, value, size, flags);
 890 }
 891
 892 static int skel_fsetxattr(vfs_handle_struct *handle, struct files_struct *fsp,
 893                           const char *name, const void *value, size_t size,
 894                           int flags)
 895 {
 896         return SMB_VFS_NEXT_FSETXATTR(handle, fsp, name, value, size, flags);
 897 }
 898
 899 static bool skel_aio_force(struct vfs_handle_struct *handle,
 900                            struct files_struct *fsp)
 901 {
 902         return SMB_VFS_NEXT_AIO_FORCE(handle, fsp);
 903 }
 904
 905 static bool skel_is_offline(struct vfs_handle_struct *handle,
 906                             const struct smb_filename *fname,
 907                             SMB_STRUCT_STAT *sbuf)
 908 {
 909         return SMB_VFS_NEXT_IS_OFFLINE(handle, fname, sbuf);
 910 }
 911
 912 static int skel_set_offline(struct vfs_handle_struct *handle,
 913                             const struct smb_filename *fname)
 914 {
 915         return SMB_VFS_NEXT_SET_OFFLINE(handle, fname);
 916 }
 917
 918 /* VFS operations structure */
 919
 920 struct vfs_fn_pointers skel_transparent_fns = {
 921         /* Disk operations */
 922
 923         .connect_fn = skel_connect,
 924         .disconnect_fn = skel_disconnect,
 925         .disk_free_fn = skel_disk_free,
 926         .get_quota_fn = skel_get_quota,
 927         .set_quota_fn = skel_set_quota,
 928         .get_shadow_copy_data_fn = skel_get_shadow_copy_data,
 929         .statvfs_fn = skel_statvfs,
 930         .fs_capabilities_fn = skel_fs_capabilities,
 931         .get_dfs_referrals_fn = skel_get_dfs_referrals,
 932
 933         /* Directory operations */
 934
 935         .opendir_fn = skel_opendir,
 936         .fdopendir_fn = skel_fdopendir,
 937         .readdir_fn = skel_readdir,
 938         .seekdir_fn = skel_seekdir,
 939         .telldir_fn = skel_telldir,
 940         .rewind_dir_fn = skel_rewind_dir,
 941         .mkdir_fn = skel_mkdir,
 942         .rmdir_fn = skel_rmdir,
 943         .closedir_fn = skel_closedir,
 944         .init_search_op_fn = skel_init_search_op,
 945
 946         /* File operations */
 947
 948         .open_fn = skel_open,
 949         .create_file_fn = skel_create_file,
 950         .close_fn = skel_close_fn,
 951         .read_fn = skel_vfs_read,
 952         .pread_fn = skel_pread,
 953         .pread_send_fn = skel_pread_send,
 954         .pread_recv_fn = skel_pread_recv,
 955         .write_fn = skel_write,
 956         .pwrite_fn = skel_pwrite,
 957         .pwrite_send_fn = skel_pwrite_send,
 958         .pwrite_recv_fn = skel_pwrite_recv,
 959         .lseek_fn = skel_lseek,
 960         .sendfile_fn = skel_sendfile,
 961         .recvfile_fn = skel_recvfile,
 962         .rename_fn = skel_rename,
 963         .fsync_fn = skel_fsync,
 964         .fsync_send_fn = skel_fsync_send,
 965         .fsync_recv_fn = skel_fsync_recv,
 966         .stat_fn = skel_stat,
 967         .fstat_fn = skel_fstat,
 968         .lstat_fn = skel_lstat,
 969         .get_alloc_size_fn = skel_get_alloc_size,
 970         .unlink_fn = skel_unlink,
 971         .chmod_fn = skel_chmod,
 972         .fchmod_fn = skel_fchmod,
 973         .chown_fn = skel_chown,
 974         .fchown_fn = skel_fchown,
 975         .lchown_fn = skel_lchown,
 976         .chdir_fn = skel_chdir,
 977         .getwd_fn = skel_getwd,
 978         .ntimes_fn = skel_ntimes,
 979         .ftruncate_fn = skel_ftruncate,
 980         .fallocate_fn = skel_fallocate,
 981         .lock_fn = skel_lock,
 982         .kernel_flock_fn = skel_kernel_flock,
 983         .linux_setlease_fn = skel_linux_setlease,
 984         .getlock_fn = skel_getlock,
 985         .symlink_fn = skel_symlink,
 986         .readlink_fn = skel_vfs_readlink,
 987         .link_fn = skel_link,
 988         .mknod_fn = skel_mknod,
 989         .realpath_fn = skel_realpath,
 990         .notify_watch_fn = skel_notify_watch,
 991         .chflags_fn = skel_chflags,
 992         .file_id_create_fn = skel_file_id_create,
 993         .copy_chunk_send_fn = skel_copy_chunk_send,
 994         .copy_chunk_recv_fn = skel_copy_chunk_recv,
 995         .get_compression_fn = skel_get_compression,
 996         .set_compression_fn = skel_set_compression,
 997
 998         .streaminfo_fn = skel_streaminfo,
 999         .get_real_filename_fn = skel_get_real_filename,
1000         .connectpath_fn = skel_connectpath,
1001         .brl_lock_windows_fn = skel_brl_lock_windows,
1002         .brl_unlock_windows_fn = skel_brl_unlock_windows,
1003         .brl_cancel_windows_fn = skel_brl_cancel_windows,
1004         .strict_lock_fn = skel_strict_lock,
1005         .strict_unlock_fn = skel_strict_unlock,
1006         .translate_name_fn = skel_translate_name,
1007         .fsctl_fn = skel_fsctl,
1008
1009         /* NT ACL operations. */
1010
1011         .fget_nt_acl_fn = skel_fget_nt_acl,
1012         .get_nt_acl_fn = skel_get_nt_acl,
1013         .fset_nt_acl_fn = skel_fset_nt_acl,
1014
1015         /* POSIX ACL operations. */
1016
1017         .chmod_acl_fn = skel_chmod_acl,
1018         .fchmod_acl_fn = skel_fchmod_acl,
1019
1020         .sys_acl_get_file_fn = skel_sys_acl_get_file,
1021         .sys_acl_get_fd_fn = skel_sys_acl_get_fd,
1022         .sys_acl_blob_get_file_fn = skel_sys_acl_blob_get_file,
1023         .sys_acl_blob_get_fd_fn = skel_sys_acl_blob_get_fd,
1024         .sys_acl_set_file_fn = skel_sys_acl_set_file,
1025         .sys_acl_set_fd_fn = skel_sys_acl_set_fd,
1026         .sys_acl_delete_def_file_fn = skel_sys_acl_delete_def_file,
1027
1028         /* EA operations. */
1029         .getxattr_fn = skel_getxattr,
1030         .fgetxattr_fn = skel_fgetxattr,
1031         .listxattr_fn = skel_listxattr,
1032         .flistxattr_fn = skel_flistxattr,
1033         .removexattr_fn = skel_removexattr,
1034         .fremovexattr_fn = skel_fremovexattr,
1035         .setxattr_fn = skel_setxattr,
1036         .fsetxattr_fn = skel_fsetxattr,
1037
1038         /* aio operations */
1039         .aio_force_fn = skel_aio_force,
1040
1041         /* offline operations */
1042         .is_offline_fn = skel_is_offline,
1043         .set_offline_fn = skel_set_offline
1044 };
1045
1046 NTSTATUS vfs_skel_transparent_init(void)
1047 {
1048         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "skel_transparent",
1049                                 &skel_transparent_fns);
1050 }