source3/modules/vfs_default.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Wrap disk only vfs functions to sidestep dodgy compilers.
   4    Copyright (C) Tim Potter 1998
   5    Copyright (C) Jeremy Allison 2007
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "includes.h"
  22
  23 #undef DBGC_CLASS
  24 #define DBGC_CLASS DBGC_VFS
  25
  26 /* Check for NULL pointer parameters in vfswrap_* functions */
  27
  28 /* We don't want to have NULL function pointers lying around.  Someone
  29    is sure to try and execute them.  These stubs are used to prevent
  30    this possibility. */
  31
  32 static int vfswrap_connect(vfs_handle_struct *handle,  const char *service, const char *user)
  33 {
  34     return 0;    /* Return >= 0 for success */
  35 }
  36
  37 static void vfswrap_disconnect(vfs_handle_struct *handle)
  38 {
  39 }
  40
  41 /* Disk operations */
  42
  43 static uint64_t vfswrap_disk_free(vfs_handle_struct *handle,  const char *path, bool small_query, uint64_t *bsize,
  44                                uint64_t *dfree, uint64_t *dsize)
  45 {
  46         uint64_t result;
  47
  48         result = sys_disk_free(handle->conn, path, small_query, bsize, dfree, dsize);
  49         return result;
  50 }
  51
  52 static int vfswrap_get_quota(struct vfs_handle_struct *handle,  enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
  53 {
  54 #ifdef HAVE_SYS_QUOTAS
  55         int result;
  56
  57         START_PROFILE(syscall_get_quota);
  58         result = sys_get_quota(handle->conn->connectpath, qtype, id, qt);
  59         END_PROFILE(syscall_get_quota);
  60         return result;
  61 #else
  62         errno = ENOSYS;
  63         return -1;
  64 #endif
  65 }
  66
  67 static int vfswrap_set_quota(struct vfs_handle_struct *handle,  enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
  68 {
  69 #ifdef HAVE_SYS_QUOTAS
  70         int result;
  71
  72         START_PROFILE(syscall_set_quota);
  73         result = sys_set_quota(handle->conn->connectpath, qtype, id, qt);
  74         END_PROFILE(syscall_set_quota);
  75         return result;
  76 #else
  77         errno = ENOSYS;
  78         return -1;
  79 #endif
  80 }
  81
  82 static int vfswrap_get_shadow_copy_data(struct vfs_handle_struct *handle, struct files_struct *fsp, SHADOW_COPY_DATA *shadow_copy_data, bool labels)
  83 {
  84         errno = ENOSYS;
  85         return -1;  /* Not implemented. */
  86 }
  87
  88 static int vfswrap_statvfs(struct vfs_handle_struct *handle,  const char *path, vfs_statvfs_struct *statbuf)
  89 {
  90         return sys_statvfs(path, statbuf);
  91 }
  92
  93 static uint32_t vfswrap_fs_capabilities(struct vfs_handle_struct *handle,
  94                 enum timestamp_set_resolution *p_ts_res)
  95 {
  96         connection_struct *conn = handle->conn;
  97         uint32_t caps = FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
  98         struct smb_filename *smb_fname_cpath = NULL;
  99         NTSTATUS status;
 100         int ret = -1;
 101
 102 #if defined(DARWINOS)
 103         struct vfs_statvfs_struct statbuf;
 104         ZERO_STRUCT(statbuf);
 105         sys_statvfs(conn->connectpath, &statbuf);
 106         caps = statbuf.FsCapabilities;
 107 #endif
 108
 109         *p_ts_res = TIMESTAMP_SET_SECONDS;
 110
 111         /* Work out what timestamp resolution we can
 112          * use when setting a timestamp. */
 113
 114         status = create_synthetic_smb_fname(talloc_tos(),
 115                                 conn->connectpath,
 116                                 NULL,
 117                                 NULL,
 118                                 &smb_fname_cpath);
 119         if (!NT_STATUS_IS_OK(status)) {
 120                 return caps;
 121         }
 122
 123         ret = SMB_VFS_STAT(conn, smb_fname_cpath);
 124         if (ret == -1) {
 125                 TALLOC_FREE(smb_fname_cpath);
 126                 return caps;
 127         }
 128
 129         if (smb_fname_cpath->st.st_ex_mtime.tv_nsec ||
 130                         smb_fname_cpath->st.st_ex_atime.tv_nsec ||
 131                         smb_fname_cpath->st.st_ex_ctime.tv_nsec) {
 132                 /* If any of the normal UNIX directory timestamps
 133                  * have a non-zero tv_nsec component assume
 134                  * we might be able to set sub-second timestamps.
 135                  * See what filetime set primitives we have.
 136                  */
 137 #if defined(HAVE_UTIMENSAT)
 138                 *p_ts_res = TIMESTAMP_SET_NT_OR_BETTER;
 139 #elif defined(HAVE_UTIMES)
 140                 /* utimes allows msec timestamps to be set. */
 141                 *p_ts_res = TIMESTAMP_SET_MSEC;
 142 #elif defined(HAVE_UTIME)
 143                 /* utime only allows sec timestamps to be set. */
 144                 *p_ts_res = TIMESTAMP_SET_SECONDS;
 145 #endif
 146
 147                 DEBUG(10,("vfswrap_fs_capabilities: timestamp "
 148                         "resolution of %s "
 149                         "available on share %s, directory %s\n",
 150                         *p_ts_res == TIMESTAMP_SET_MSEC ? "msec" : "sec",
 151                         lp_servicename(conn->params->service),
 152                         conn->connectpath ));
 153         }
 154         TALLOC_FREE(smb_fname_cpath);
 155         return caps;
 156 }
 157
 158 /* Directory operations */
 159
 160 static SMB_STRUCT_DIR *vfswrap_opendir(vfs_handle_struct *handle,  const char *fname, const char *mask, uint32 attr)
 161 {
 162         SMB_STRUCT_DIR *result;
 163
 164         START_PROFILE(syscall_opendir);
 165         result = sys_opendir(fname);
 166         END_PROFILE(syscall_opendir);
 167         return result;
 168 }
 169
 170 static SMB_STRUCT_DIRENT *vfswrap_readdir(vfs_handle_struct *handle,
 171                                           SMB_STRUCT_DIR *dirp,
 172                                           SMB_STRUCT_STAT *sbuf)
 173 {
 174         SMB_STRUCT_DIRENT *result;
 175
 176         START_PROFILE(syscall_readdir);
 177         result = sys_readdir(dirp);
 178         /* Default Posix readdir() does not give us stat info.
 179          * Set to invalid to indicate we didn't return this info. */
 180         if (sbuf)
 181                 SET_STAT_INVALID(*sbuf);
 182         END_PROFILE(syscall_readdir);
 183         return result;
 184 }
 185
 186 static void vfswrap_seekdir(vfs_handle_struct *handle,  SMB_STRUCT_DIR *dirp, long offset)
 187 {
 188         START_PROFILE(syscall_seekdir);
 189         sys_seekdir(dirp, offset);
 190         END_PROFILE(syscall_seekdir);
 191 }
 192
 193 static long vfswrap_telldir(vfs_handle_struct *handle,  SMB_STRUCT_DIR *dirp)
 194 {
 195         long result;
 196         START_PROFILE(syscall_telldir);
 197         result = sys_telldir(dirp);
 198         END_PROFILE(syscall_telldir);
 199         return result;
 200 }
 201
 202 static void vfswrap_rewinddir(vfs_handle_struct *handle,  SMB_STRUCT_DIR *dirp)
 203 {
 204         START_PROFILE(syscall_rewinddir);
 205         sys_rewinddir(dirp);
 206         END_PROFILE(syscall_rewinddir);
 207 }
 208
 209 static int vfswrap_mkdir(vfs_handle_struct *handle,  const char *path, mode_t mode)
 210 {
 211         int result;
 212         bool has_dacl = False;
 213         char *parent = NULL;
 214
 215         START_PROFILE(syscall_mkdir);
 216
 217         if (lp_inherit_acls(SNUM(handle->conn))
 218             && parent_dirname(talloc_tos(), path, &parent, NULL)
 219             && (has_dacl = directory_has_default_acl(handle->conn, parent)))
 220                 mode = (0777 & lp_dir_mask(SNUM(handle->conn)));
 221
 222         TALLOC_FREE(parent);
 223
 224         result = mkdir(path, mode);
 225
 226         if (result == 0 && !has_dacl) {
 227                 /*
 228                  * We need to do this as the default behavior of POSIX ACLs
 229                  * is to set the mask to be the requested group permission
 230                  * bits, not the group permission bits to be the requested
 231                  * group permission bits. This is not what we want, as it will
 232                  * mess up any inherited ACL bits that were set. JRA.
 233                  */
 234                 int saved_errno = errno; /* We may get ENOSYS */
 235                 if ((SMB_VFS_CHMOD_ACL(handle->conn, path, mode) == -1) && (errno == ENOSYS))
 236                         errno = saved_errno;
 237         }
 238
 239         END_PROFILE(syscall_mkdir);
 240         return result;
 241 }
 242
 243 static int vfswrap_rmdir(vfs_handle_struct *handle,  const char *path)
 244 {
 245         int result;
 246
 247         START_PROFILE(syscall_rmdir);
 248         result = rmdir(path);
 249         END_PROFILE(syscall_rmdir);
 250         return result;
 251 }
 252
 253 static int vfswrap_closedir(vfs_handle_struct *handle,  SMB_STRUCT_DIR *dirp)
 254 {
 255         int result;
 256
 257         START_PROFILE(syscall_closedir);
 258         result = sys_closedir(dirp);
 259         END_PROFILE(syscall_closedir);
 260         return result;
 261 }
 262
 263 static void vfswrap_init_search_op(vfs_handle_struct *handle,
 264                                    SMB_STRUCT_DIR *dirp)
 265 {
 266         /* Default behavior is a NOOP */
 267 }
 268
 269 /* File operations */
 270
 271 static int vfswrap_open(vfs_handle_struct *handle,
 272                         struct smb_filename *smb_fname,
 273                         files_struct *fsp, int flags, mode_t mode)
 274 {
 275         int result = -1;
 276
 277         START_PROFILE(syscall_open);
 278
 279         if (smb_fname->stream_name) {
 280                 errno = ENOENT;
 281                 goto out;
 282         }
 283
 284         result = sys_open(smb_fname->base_name, flags, mode);
 285  out:
 286         END_PROFILE(syscall_open);
 287         return result;
 288 }
 289
 290 static NTSTATUS vfswrap_create_file(vfs_handle_struct *handle,
 291                                     struct smb_request *req,
 292                                     uint16_t root_dir_fid,
 293                                     struct smb_filename *smb_fname,
 294                                     uint32_t access_mask,
 295                                     uint32_t share_access,
 296                                     uint32_t create_disposition,
 297                                     uint32_t create_options,
 298                                     uint32_t file_attributes,
 299                                     uint32_t oplock_request,
 300                                     uint64_t allocation_size,
 301                                     uint32_t private_flags,
 302                                     struct security_descriptor *sd,
 303                                     struct ea_list *ea_list,
 304                                     files_struct **result,
 305                                     int *pinfo)
 306 {
 307         return create_file_default(handle->conn, req, root_dir_fid, smb_fname,
 308                                    access_mask, share_access,
 309                                    create_disposition, create_options,
 310                                    file_attributes, oplock_request,
 311                                    allocation_size, private_flags,
 312                                    sd, ea_list, result,
 313                                    pinfo);
 314 }
 315
 316 static int vfswrap_close(vfs_handle_struct *handle, files_struct *fsp)
 317 {
 318         int result;
 319
 320         START_PROFILE(syscall_close);
 321         result = fd_close_posix(fsp);
 322         END_PROFILE(syscall_close);
 323         return result;
 324 }
 325
 326 static ssize_t vfswrap_read(vfs_handle_struct *handle, files_struct *fsp, void *data, size_t n)
 327 {
 328         ssize_t result;
 329
 330         START_PROFILE_BYTES(syscall_read, n);
 331         result = sys_read(fsp->fh->fd, data, n);
 332         END_PROFILE(syscall_read);
 333         return result;
 334 }
 335
 336 static ssize_t vfswrap_pread(vfs_handle_struct *handle, files_struct *fsp, void *data,
 337                         size_t n, SMB_OFF_T offset)
 338 {
 339         ssize_t result;
 340
 341 #if defined(HAVE_PREAD) || defined(HAVE_PREAD64)
 342         START_PROFILE_BYTES(syscall_pread, n);
 343         result = sys_pread(fsp->fh->fd, data, n, offset);
 344         END_PROFILE(syscall_pread);
 345
 346         if (result == -1 && errno == ESPIPE) {
 347                 /* Maintain the fiction that pipes can be seeked (sought?) on. */
 348                 result = SMB_VFS_READ(fsp, data, n);
 349                 fsp->fh->pos = 0;
 350         }
 351
 352 #else /* HAVE_PREAD */
 353         SMB_OFF_T   curr;
 354         int lerrno;
 355
 356         curr = SMB_VFS_LSEEK(fsp, 0, SEEK_CUR);
 357         if (curr == -1 && errno == ESPIPE) {
 358                 /* Maintain the fiction that pipes can be seeked (sought?) on. */
 359                 result = SMB_VFS_READ(fsp, data, n);
 360                 fsp->fh->pos = 0;
 361                 return result;
 362         }
 363
 364         if (SMB_VFS_LSEEK(fsp, offset, SEEK_SET) == -1) {
 365                 return -1;
 366         }
 367
 368         errno = 0;
 369         result = SMB_VFS_READ(fsp, data, n);
 370         lerrno = errno;
 371
 372         SMB_VFS_LSEEK(fsp, curr, SEEK_SET);
 373         errno = lerrno;
 374
 375 #endif /* HAVE_PREAD */
 376
 377         return result;
 378 }
 379
 380 static ssize_t vfswrap_write(vfs_handle_struct *handle, files_struct *fsp, const void *data, size_t n)
 381 {
 382         ssize_t result;
 383
 384         START_PROFILE_BYTES(syscall_write, n);
 385         result = sys_write(fsp->fh->fd, data, n);
 386         END_PROFILE(syscall_write);
 387         return result;
 388 }
 389
 390 static ssize_t vfswrap_pwrite(vfs_handle_struct *handle, files_struct *fsp, const void *data,
 391                         size_t n, SMB_OFF_T offset)
 392 {
 393         ssize_t result;
 394
 395 #if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
 396         START_PROFILE_BYTES(syscall_pwrite, n);
 397         result = sys_pwrite(fsp->fh->fd, data, n, offset);
 398         END_PROFILE(syscall_pwrite);
 399
 400         if (result == -1 && errno == ESPIPE) {
 401                 /* Maintain the fiction that pipes can be sought on. */
 402                 result = SMB_VFS_WRITE(fsp, data, n);
 403         }
 404
 405 #else /* HAVE_PWRITE */
 406         SMB_OFF_T   curr;
 407         int         lerrno;
 408
 409         curr = SMB_VFS_LSEEK(fsp, 0, SEEK_CUR);
 410         if (curr == -1) {
 411                 return -1;
 412         }
 413
 414         if (SMB_VFS_LSEEK(fsp, offset, SEEK_SET) == -1) {
 415                 return -1;
 416         }
 417
 418         result = SMB_VFS_WRITE(fsp, data, n);
 419         lerrno = errno;
 420
 421         SMB_VFS_LSEEK(fsp, curr, SEEK_SET);
 422         errno = lerrno;
 423
 424 #endif /* HAVE_PWRITE */
 425
 426         return result;
 427 }
 428
 429 static SMB_OFF_T vfswrap_lseek(vfs_handle_struct *handle, files_struct *fsp, SMB_OFF_T offset, int whence)
 430 {
 431         SMB_OFF_T result = 0;
 432
 433         START_PROFILE(syscall_lseek);
 434
 435         /* Cope with 'stat' file opens. */
 436         if (fsp->fh->fd != -1)
 437                 result = sys_lseek(fsp->fh->fd, offset, whence);
 438
 439         /*
 440          * We want to maintain the fiction that we can seek
 441          * on a fifo for file system purposes. This allows
 442          * people to set up UNIX fifo's that feed data to Windows
 443          * applications. JRA.
 444          */
 445
 446         if((result == -1) && (errno == ESPIPE)) {
 447                 result = 0;
 448                 errno = 0;
 449         }
 450
 451         END_PROFILE(syscall_lseek);
 452         return result;
 453 }
 454
 455 static ssize_t vfswrap_sendfile(vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *hdr,
 456                         SMB_OFF_T offset, size_t n)
 457 {
 458         ssize_t result;
 459
 460         START_PROFILE_BYTES(syscall_sendfile, n);
 461         result = sys_sendfile(tofd, fromfsp->fh->fd, hdr, offset, n);
 462         END_PROFILE(syscall_sendfile);
 463         return result;
 464 }
 465
 466 static ssize_t vfswrap_recvfile(vfs_handle_struct *handle,
 467                         int fromfd,
 468                         files_struct *tofsp,
 469                         SMB_OFF_T offset,
 470                         size_t n)
 471 {
 472         ssize_t result;
 473
 474         START_PROFILE_BYTES(syscall_recvfile, n);
 475         result = sys_recvfile(fromfd, tofsp->fh->fd, offset, n);
 476         END_PROFILE(syscall_recvfile);
 477         return result;
 478 }
 479
 480 static int vfswrap_rename(vfs_handle_struct *handle,
 481                           const struct smb_filename *smb_fname_src,
 482                           const struct smb_filename *smb_fname_dst)
 483 {
 484         int result = -1;
 485
 486         START_PROFILE(syscall_rename);
 487
 488         if (smb_fname_src->stream_name || smb_fname_dst->stream_name) {
 489                 errno = ENOENT;
 490                 goto out;
 491         }
 492
 493         result = rename(smb_fname_src->base_name, smb_fname_dst->base_name);
 494
 495  out:
 496         END_PROFILE(syscall_rename);
 497         return result;
 498 }
 499
 500 static int vfswrap_fsync(vfs_handle_struct *handle, files_struct *fsp)
 501 {
 502 #ifdef HAVE_FSYNC
 503         int result;
 504
 505         START_PROFILE(syscall_fsync);
 506         result = fsync(fsp->fh->fd);
 507         END_PROFILE(syscall_fsync);
 508         return result;
 509 #else
 510         return 0;
 511 #endif
 512 }
 513
 514 static int vfswrap_stat(vfs_handle_struct *handle,
 515                         struct smb_filename *smb_fname)
 516 {
 517         int result = -1;
 518
 519         START_PROFILE(syscall_stat);
 520
 521         if (smb_fname->stream_name) {
 522                 errno = ENOENT;
 523                 goto out;
 524         }
 525
 526         result = sys_stat(smb_fname->base_name, &smb_fname->st,
 527                           lp_fake_dir_create_times(SNUM(handle->conn)));
 528  out:
 529         END_PROFILE(syscall_stat);
 530         return result;
 531 }
 532
 533 static int vfswrap_fstat(vfs_handle_struct *handle, files_struct *fsp, SMB_STRUCT_STAT *sbuf)
 534 {
 535         int result;
 536
 537         START_PROFILE(syscall_fstat);
 538         result = sys_fstat(fsp->fh->fd,
 539                            sbuf, lp_fake_dir_create_times(SNUM(handle->conn)));
 540         END_PROFILE(syscall_fstat);
 541         return result;
 542 }
 543
 544 static int vfswrap_lstat(vfs_handle_struct *handle,
 545                          struct smb_filename *smb_fname)
 546 {
 547         int result = -1;
 548
 549         START_PROFILE(syscall_lstat);
 550
 551         if (smb_fname->stream_name) {
 552                 errno = ENOENT;
 553                 goto out;
 554         }
 555
 556         result = sys_lstat(smb_fname->base_name, &smb_fname->st,
 557                            lp_fake_dir_create_times(SNUM(handle->conn)));
 558  out:
 559         END_PROFILE(syscall_lstat);
 560         return result;
 561 }
 562
 563 static NTSTATUS vfswrap_translate_name(struct vfs_handle_struct *handle,
 564                                        const char *name,
 565                                        enum vfs_translate_direction direction,
 566                                        TALLOC_CTX *mem_ctx,
 567                                        char **mapped_name)
 568 {
 569         return NT_STATUS_NONE_MAPPED;
 570 }
 571
 572 /********************************************************************
 573  Given a stat buffer return the allocated size on disk, taking into
 574  account sparse files.
 575 ********************************************************************/
 576 static uint64_t vfswrap_get_alloc_size(vfs_handle_struct *handle,
 577                                        struct files_struct *fsp,
 578                                        const SMB_STRUCT_STAT *sbuf)
 579 {
 580         uint64_t result;
 581
 582         START_PROFILE(syscall_get_alloc_size);
 583
 584         if(S_ISDIR(sbuf->st_ex_mode)) {
 585                 result = 0;
 586                 goto out;
 587         }
 588
 589 #if defined(HAVE_STAT_ST_BLOCKS) && defined(STAT_ST_BLOCKSIZE)
 590         result = (uint64_t)STAT_ST_BLOCKSIZE * (uint64_t)sbuf->st_ex_blocks;
 591 #else
 592         result = get_file_size_stat(sbuf);
 593 #endif
 594
 595         if (fsp && fsp->initial_allocation_size)
 596                 result = MAX(result,fsp->initial_allocation_size);
 597
 598         result = smb_roundup(handle->conn, result);
 599
 600  out:
 601         END_PROFILE(syscall_get_alloc_size);
 602         return result;
 603 }
 604
 605 static int vfswrap_unlink(vfs_handle_struct *handle,
 606                           const struct smb_filename *smb_fname)
 607 {
 608         int result = -1;
 609
 610         START_PROFILE(syscall_unlink);
 611
 612         if (smb_fname->stream_name) {
 613                 errno = ENOENT;
 614                 goto out;
 615         }
 616         result = unlink(smb_fname->base_name);
 617
 618  out:
 619         END_PROFILE(syscall_unlink);
 620         return result;
 621 }
 622
 623 static int vfswrap_chmod(vfs_handle_struct *handle,  const char *path, mode_t mode)
 624 {
 625         int result;
 626
 627         START_PROFILE(syscall_chmod);
 628
 629         /*
 630          * We need to do this due to the fact that the default POSIX ACL
 631          * chmod modifies the ACL *mask* for the group owner, not the
 632          * group owner bits directly. JRA.
 633          */
 634
 635
 636         {
 637                 int saved_errno = errno; /* We might get ENOSYS */
 638                 if ((result = SMB_VFS_CHMOD_ACL(handle->conn, path, mode)) == 0) {
 639                         END_PROFILE(syscall_chmod);
 640                         return result;
 641                 }
 642                 /* Error - return the old errno. */
 643                 errno = saved_errno;
 644         }
 645
 646         result = chmod(path, mode);
 647         END_PROFILE(syscall_chmod);
 648         return result;
 649 }
 650
 651 static int vfswrap_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
 652 {
 653         int result;
 654
 655         START_PROFILE(syscall_fchmod);
 656
 657         /*
 658          * We need to do this due to the fact that the default POSIX ACL
 659          * chmod modifies the ACL *mask* for the group owner, not the
 660          * group owner bits directly. JRA.
 661          */
 662
 663         {
 664                 int saved_errno = errno; /* We might get ENOSYS */
 665                 if ((result = SMB_VFS_FCHMOD_ACL(fsp, mode)) == 0) {
 666                         END_PROFILE(syscall_fchmod);
 667                         return result;
 668                 }
 669                 /* Error - return the old errno. */
 670                 errno = saved_errno;
 671         }
 672
 673 #if defined(HAVE_FCHMOD)
 674         result = fchmod(fsp->fh->fd, mode);
 675 #else
 676         result = -1;
 677         errno = ENOSYS;
 678 #endif
 679
 680         END_PROFILE(syscall_fchmod);
 681         return result;
 682 }
 683
 684 static int vfswrap_chown(vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
 685 {
 686         int result;
 687
 688         START_PROFILE(syscall_chown);
 689         result = chown(path, uid, gid);
 690         END_PROFILE(syscall_chown);
 691         return result;
 692 }
 693
 694 static int vfswrap_fchown(vfs_handle_struct *handle, files_struct *fsp, uid_t uid, gid_t gid)
 695 {
 696 #ifdef HAVE_FCHOWN
 697         int result;
 698
 699         START_PROFILE(syscall_fchown);
 700         result = fchown(fsp->fh->fd, uid, gid);
 701         END_PROFILE(syscall_fchown);
 702         return result;
 703 #else
 704         errno = ENOSYS;
 705         return -1;
 706 #endif
 707 }
 708
 709 static int vfswrap_lchown(vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
 710 {
 711         int result;
 712
 713         START_PROFILE(syscall_lchown);
 714         result = lchown(path, uid, gid);
 715         END_PROFILE(syscall_lchown);
 716         return result;
 717 }
 718
 719 static int vfswrap_chdir(vfs_handle_struct *handle,  const char *path)
 720 {
 721         int result;
 722
 723         START_PROFILE(syscall_chdir);
 724         result = chdir(path);
 725         END_PROFILE(syscall_chdir);
 726         return result;
 727 }
 728
 729 static char *vfswrap_getwd(vfs_handle_struct *handle,  char *path)
 730 {
 731         char *result;
 732
 733         START_PROFILE(syscall_getwd);
 734         result = sys_getwd(path);
 735         END_PROFILE(syscall_getwd);
 736         return result;
 737 }
 738
 739 /*********************************************************************
 740  nsec timestamp resolution call. Convert down to whatever the underlying
 741  system will support.
 742 **********************************************************************/
 743
 744 static int vfswrap_ntimes(vfs_handle_struct *handle,
 745                           const struct smb_filename *smb_fname,
 746                           struct smb_file_time *ft)
 747 {
 748         int result = -1;
 749
 750         START_PROFILE(syscall_ntimes);
 751
 752         if (smb_fname->stream_name) {
 753                 errno = ENOENT;
 754                 goto out;
 755         }
 756
 757         if (ft != NULL) {
 758                 if (null_timespec(ft->atime)) {
 759                         ft->atime= smb_fname->st.st_ex_atime;
 760                 }
 761
 762                 if (null_timespec(ft->mtime)) {
 763                         ft->mtime = smb_fname->st.st_ex_mtime;
 764                 }
 765
 766                 if (!null_timespec(ft->create_time)) {
 767                         set_create_timespec_ea(handle->conn,
 768                                                smb_fname,
 769                                                ft->create_time);
 770                 }
 771
 772                 if ((timespec_compare(&ft->atime,
 773                                       &smb_fname->st.st_ex_atime) == 0) &&
 774                     (timespec_compare(&ft->mtime,
 775                                       &smb_fname->st.st_ex_mtime) == 0)) {
 776                         return 0;
 777                 }
 778         }
 779
 780 #if defined(HAVE_UTIMENSAT)
 781         if (ft != NULL) {
 782                 struct timespec ts[2];
 783                 ts[0] = ft->atime;
 784                 ts[1] = ft->mtime;
 785                 result = utimensat(AT_FDCWD, smb_fname->base_name, ts, 0);
 786         } else {
 787                 result = utimensat(AT_FDCWD, smb_fname->base_name, NULL, 0);
 788         }
 789         if (!((result == -1) && (errno == ENOSYS))) {
 790                 goto out;
 791         }
 792 #endif
 793 #if defined(HAVE_UTIMES)
 794         if (ft != NULL) {
 795                 struct timeval tv[2];
 796                 tv[0] = convert_timespec_to_timeval(ft->atime);
 797                 tv[1] = convert_timespec_to_timeval(ft->mtime);
 798                 result = utimes(smb_fname->base_name, tv);
 799         } else {
 800                 result = utimes(smb_fname->base_name, NULL);
 801         }
 802         if (!((result == -1) && (errno == ENOSYS))) {
 803                 goto out;
 804         }
 805 #endif
 806 #if defined(HAVE_UTIME)
 807         if (ft != NULL) {
 808                 struct utimbuf times;
 809                 times.actime = convert_timespec_to_time_t(ft->atime);
 810                 times.modtime = convert_timespec_to_time_t(ft->mtime);
 811                 result = utime(smb_fname->base_name, &times);
 812         } else {
 813                 result = utime(smb_fname->base_name, NULL);
 814         }
 815         if (!((result == -1) && (errno == ENOSYS))) {
 816                 goto out;
 817         }
 818 #endif
 819         errno = ENOSYS;
 820         result = -1;
 821
 822  out:
 823         END_PROFILE(syscall_ntimes);
 824         return result;
 825 }
 826
 827 /*********************************************************************
 828  A version of ftruncate that will write the space on disk if strict
 829  allocate is set.
 830 **********************************************************************/
 831
 832 static int strict_allocate_ftruncate(vfs_handle_struct *handle, files_struct *fsp, SMB_OFF_T len)
 833 {
 834         SMB_OFF_T space_to_write;
 835         uint64_t space_avail;
 836         uint64_t bsize,dfree,dsize;
 837         int ret;
 838         NTSTATUS status;
 839         SMB_STRUCT_STAT *pst;
 840
 841         status = vfs_stat_fsp(fsp);
 842         if (!NT_STATUS_IS_OK(status)) {
 843                 return -1;
 844         }
 845         pst = &fsp->fsp_name->st;
 846
 847 #ifdef S_ISFIFO
 848         if (S_ISFIFO(pst->st_ex_mode))
 849                 return 0;
 850 #endif
 851
 852         if (pst->st_ex_size == len)
 853                 return 0;
 854
 855         /* Shrink - just ftruncate. */
 856         if (pst->st_ex_size > len)
 857                 return sys_ftruncate(fsp->fh->fd, len);
 858
 859         space_to_write = len - pst->st_ex_size;
 860
 861         /* for allocation try fallocate first. This can fail on some
 862            platforms e.g. when the filesystem doesn't support it and no
 863            emulation is being done by the libc (like on AIX with JFS1). In that
 864            case we do our own emulation. fallocate implementations can
 865            return ENOTSUP or EINVAL in cases like that. */
 866         ret = SMB_VFS_FALLOCATE(fsp, VFS_FALLOCATE_EXTEND_SIZE,
 867                                 pst->st_ex_size, space_to_write);
 868         if (ret == ENOSPC) {
 869                 errno = ENOSPC;
 870                 return -1;
 871         }
 872         if (ret == 0) {
 873                 return 0;
 874         }
 875         DEBUG(10,("strict_allocate_ftruncate: SMB_VFS_FALLOCATE failed with "
 876                 "error %d. Falling back to slow manual allocation\n", ret));
 877
 878         /* available disk space is enough or not? */
 879         space_avail = get_dfree_info(fsp->conn,
 880                                      fsp->fsp_name->base_name, false,
 881                                      &bsize,&dfree,&dsize);
 882         /* space_avail is 1k blocks */
 883         if (space_avail == (uint64_t)-1 ||
 884                         ((uint64_t)space_to_write/1024 > space_avail) ) {
 885                 errno = ENOSPC;
 886                 return -1;
 887         }
 888
 889         /* Write out the real space on disk. */
 890         ret = vfs_slow_fallocate(fsp, pst->st_ex_size, space_to_write);
 891         if (ret != 0) {
 892                 errno = ret;
 893                 ret = -1;
 894         }
 895
 896         return 0;
 897 }
 898
 899 static int vfswrap_ftruncate(vfs_handle_struct *handle, files_struct *fsp, SMB_OFF_T len)
 900 {
 901         int result = -1;
 902         SMB_STRUCT_STAT *pst;
 903         NTSTATUS status;
 904         char c = 0;
 905
 906         START_PROFILE(syscall_ftruncate);
 907
 908         if (lp_strict_allocate(SNUM(fsp->conn)) && !fsp->is_sparse) {
 909                 result = strict_allocate_ftruncate(handle, fsp, len);
 910                 END_PROFILE(syscall_ftruncate);
 911                 return result;
 912         }
 913
 914         /* we used to just check HAVE_FTRUNCATE_EXTEND and only use
 915            sys_ftruncate if the system supports it. Then I discovered that
 916            you can have some filesystems that support ftruncate
 917            expansion and some that don't! On Linux fat can't do
 918            ftruncate extend but ext2 can. */
 919
 920         result = sys_ftruncate(fsp->fh->fd, len);
 921         if (result == 0)
 922                 goto done;
 923
 924         /* According to W. R. Stevens advanced UNIX prog. Pure 4.3 BSD cannot
 925            extend a file with ftruncate. Provide alternate implementation
 926            for this */
 927
 928         /* Do an fstat to see if the file is longer than the requested
 929            size in which case the ftruncate above should have
 930            succeeded or shorter, in which case seek to len - 1 and
 931            write 1 byte of zero */
 932         status = vfs_stat_fsp(fsp);
 933         if (!NT_STATUS_IS_OK(status)) {
 934                 goto done;
 935         }
 936         pst = &fsp->fsp_name->st;
 937
 938 #ifdef S_ISFIFO
 939         if (S_ISFIFO(pst->st_ex_mode)) {
 940                 result = 0;
 941                 goto done;
 942         }
 943 #endif
 944
 945         if (pst->st_ex_size == len) {
 946                 result = 0;
 947                 goto done;
 948         }
 949
 950         if (pst->st_ex_size > len) {
 951                 /* the sys_ftruncate should have worked */
 952                 goto done;
 953         }
 954
 955         if (SMB_VFS_PWRITE(fsp, &c, 1, len-1)!=1) {
 956                 goto done;
 957         }
 958
 959         result = 0;
 960
 961   done:
 962
 963         END_PROFILE(syscall_ftruncate);
 964         return result;
 965 }
 966
 967 static int vfswrap_fallocate(vfs_handle_struct *handle,
 968                         files_struct *fsp,
 969                         enum vfs_fallocate_mode mode,
 970                         SMB_OFF_T offset,
 971                         SMB_OFF_T len)
 972 {
 973         int result;
 974
 975         START_PROFILE(syscall_fallocate);
 976         if (mode == VFS_FALLOCATE_EXTEND_SIZE) {
 977                 result = sys_posix_fallocate(fsp->fh->fd, offset, len);
 978         } else if (mode == VFS_FALLOCATE_KEEP_SIZE) {
 979                 result = sys_fallocate(fsp->fh->fd, mode, offset, len);
 980         } else {
 981                 errno = EINVAL;
 982                 result = -1;
 983         }
 984         END_PROFILE(syscall_fallocate);
 985         return result;
 986 }
 987
 988 static bool vfswrap_lock(vfs_handle_struct *handle, files_struct *fsp, int op, SMB_OFF_T offset, SMB_OFF_T count, int type)
 989 {
 990         bool result;
 991
 992         START_PROFILE(syscall_fcntl_lock);
 993         result =  fcntl_lock(fsp->fh->fd, op, offset, count, type);
 994         END_PROFILE(syscall_fcntl_lock);
 995         return result;
 996 }
 997
 998 static int vfswrap_kernel_flock(vfs_handle_struct *handle, files_struct *fsp,
 999                                 uint32 share_mode, uint32 access_mask)
1000 {
1001         START_PROFILE(syscall_kernel_flock);
1002         kernel_flock(fsp->fh->fd, share_mode, access_mask);
1003         END_PROFILE(syscall_kernel_flock);
1004         return 0;
1005 }
1006
1007 static bool vfswrap_getlock(vfs_handle_struct *handle, files_struct *fsp, SMB_OFF_T *poffset, SMB_OFF_T *pcount, int *ptype, pid_t *ppid)
1008 {
1009         bool result;
1010
1011         START_PROFILE(syscall_fcntl_getlock);
1012         result =  fcntl_getlock(fsp->fh->fd, poffset, pcount, ptype, ppid);
1013         END_PROFILE(syscall_fcntl_getlock);
1014         return result;
1015 }
1016
1017 static int vfswrap_linux_setlease(vfs_handle_struct *handle, files_struct *fsp,
1018                                 int leasetype)
1019 {
1020         int result = -1;
1021
1022         START_PROFILE(syscall_linux_setlease);
1023
1024 #ifdef HAVE_KERNEL_OPLOCKS_LINUX
1025         /* first set the signal handler */
1026         if(linux_set_lease_sighandler(fsp->fh->fd) == -1) {
1027                 return -1;
1028         }
1029
1030         result = linux_setlease(fsp->fh->fd, leasetype);
1031 #else
1032         errno = ENOSYS;
1033 #endif
1034         END_PROFILE(syscall_linux_setlease);
1035         return result;
1036 }
1037
1038 static int vfswrap_symlink(vfs_handle_struct *handle,  const char *oldpath, const char *newpath)
1039 {
1040         int result;
1041
1042         START_PROFILE(syscall_symlink);
1043         result = symlink(oldpath, newpath);
1044         END_PROFILE(syscall_symlink);
1045         return result;
1046 }
1047
1048 static int vfswrap_readlink(vfs_handle_struct *handle,  const char *path, char *buf, size_t bufsiz)
1049 {
1050         int result;
1051
1052         START_PROFILE(syscall_readlink);
1053         result = readlink(path, buf, bufsiz);
1054         END_PROFILE(syscall_readlink);
1055         return result;
1056 }
1057
1058 static int vfswrap_link(vfs_handle_struct *handle,  const char *oldpath, const char *newpath)
1059 {
1060         int result;
1061
1062         START_PROFILE(syscall_link);
1063         result = link(oldpath, newpath);
1064         END_PROFILE(syscall_link);
1065         return result;
1066 }
1067
1068 static int vfswrap_mknod(vfs_handle_struct *handle,  const char *pathname, mode_t mode, SMB_DEV_T dev)
1069 {
1070         int result;
1071
1072         START_PROFILE(syscall_mknod);
1073         result = sys_mknod(pathname, mode, dev);
1074         END_PROFILE(syscall_mknod);
1075         return result;
1076 }
1077
1078 static char *vfswrap_realpath(vfs_handle_struct *handle,  const char *path)
1079 {
1080         char *result;
1081
1082         START_PROFILE(syscall_realpath);
1083 #ifdef REALPATH_TAKES_NULL
1084         result = realpath(path, NULL);
1085 #else
1086         result = SMB_MALLOC_ARRAY(char, PATH_MAX+1);
1087         if (result) {
1088                 char *resolved_path = realpath(path, result);
1089                 if (!resolved_path) {
1090                         SAFE_FREE(result);
1091                 } else {
1092                         /* SMB_ASSERT(result == resolved_path) ? */
1093                         result = resolved_path;
1094                 }
1095         }
1096 #endif
1097         END_PROFILE(syscall_realpath);
1098         return result;
1099 }
1100
1101 static NTSTATUS vfswrap_notify_watch(vfs_handle_struct *vfs_handle,
1102                                      struct sys_notify_context *ctx,
1103                                      struct notify_entry *e,
1104                                      void (*callback)(struct sys_notify_context *ctx,
1105                                                       void *private_data,
1106                                                       struct notify_event *ev),
1107                                      void *private_data, void *handle)
1108 {
1109         /*
1110          * So far inotify is the only supported default notify mechanism. If
1111          * another platform like the the BSD's or a proprietary Unix comes
1112          * along and wants another default, we can play the same trick we
1113          * played with Posix ACLs.
1114          *
1115          * Until that is the case, hard-code inotify here.
1116          */
1117 #ifdef HAVE_INOTIFY
1118         if (lp_kernel_change_notify(ctx->conn->params)) {
1119                 return inotify_watch(ctx, e, callback, private_data, handle);
1120         }
1121 #endif
1122         /*
1123          * Do nothing, leave everything to notify_internal.c
1124          */
1125         return NT_STATUS_OK;
1126 }
1127
1128 static int vfswrap_chflags(vfs_handle_struct *handle, const char *path,
1129                            unsigned int flags)
1130 {
1131 #ifdef HAVE_CHFLAGS
1132         return chflags(path, flags);
1133 #else
1134         errno = ENOSYS;
1135         return -1;
1136 #endif
1137 }
1138
1139 static struct file_id vfswrap_file_id_create(struct vfs_handle_struct *handle,
1140                                              const SMB_STRUCT_STAT *sbuf)
1141 {
1142         struct file_id key;
1143
1144         /* the ZERO_STRUCT ensures padding doesn't break using the key as a
1145          * blob */
1146         ZERO_STRUCT(key);
1147
1148         key.devid = sbuf->st_ex_dev;
1149         key.inode = sbuf->st_ex_ino;
1150         /* key.extid is unused by default. */
1151
1152         return key;
1153 }
1154
1155 static NTSTATUS vfswrap_streaminfo(vfs_handle_struct *handle,
1156                                    struct files_struct *fsp,
1157                                    const char *fname,
1158                                    TALLOC_CTX *mem_ctx,
1159                                    unsigned int *pnum_streams,
1160                                    struct stream_struct **pstreams)
1161 {
1162         SMB_STRUCT_STAT sbuf;
1163         unsigned int num_streams = 0;
1164         struct stream_struct *streams = NULL;
1165         int ret;
1166
1167         if ((fsp != NULL) && (fsp->is_directory)) {
1168                 /*
1169                  * No default streams on directories
1170                  */
1171                 goto done;
1172         }
1173
1174         if ((fsp != NULL) && (fsp->fh->fd != -1)) {
1175                 ret = SMB_VFS_FSTAT(fsp, &sbuf);
1176         }
1177         else {
1178                 struct smb_filename smb_fname;
1179
1180                 ZERO_STRUCT(smb_fname);
1181                 smb_fname.base_name = discard_const_p(char, fname);
1182
1183                 if (lp_posix_pathnames()) {
1184                         ret = SMB_VFS_LSTAT(handle->conn, &smb_fname);
1185                 } else {
1186                         ret = SMB_VFS_STAT(handle->conn, &smb_fname);
1187                 }
1188                 sbuf = smb_fname.st;
1189         }
1190
1191         if (ret == -1) {
1192                 return map_nt_error_from_unix(errno);
1193         }
1194
1195         if (S_ISDIR(sbuf.st_ex_mode)) {
1196                 goto done;
1197         }
1198
1199         streams = talloc(mem_ctx, struct stream_struct);
1200
1201         if (streams == NULL) {
1202                 return NT_STATUS_NO_MEMORY;
1203         }
1204
1205         streams->size = sbuf.st_ex_size;
1206         streams->alloc_size = SMB_VFS_GET_ALLOC_SIZE(handle->conn, fsp, &sbuf);
1207
1208         streams->name = talloc_strdup(streams, "::$DATA");
1209         if (streams->name == NULL) {
1210                 TALLOC_FREE(streams);
1211                 return NT_STATUS_NO_MEMORY;
1212         }
1213
1214         num_streams = 1;
1215  done:
1216         *pnum_streams = num_streams;
1217         *pstreams = streams;
1218         return NT_STATUS_OK;
1219 }
1220
1221 static int vfswrap_get_real_filename(struct vfs_handle_struct *handle,
1222                                      const char *path,
1223                                      const char *name,
1224                                      TALLOC_CTX *mem_ctx,
1225                                      char **found_name)
1226 {
1227         /*
1228          * Don't fall back to get_real_filename so callers can differentiate
1229          * between a full directory scan and an actual case-insensitive stat.
1230          */
1231         errno = EOPNOTSUPP;
1232         return -1;
1233 }
1234
1235 static const char *vfswrap_connectpath(struct vfs_handle_struct *handle,
1236                                        const char *fname)
1237 {
1238         return handle->conn->connectpath;
1239 }
1240
1241 static NTSTATUS vfswrap_brl_lock_windows(struct vfs_handle_struct *handle,
1242                                          struct byte_range_lock *br_lck,
1243                                          struct lock_struct *plock,
1244                                          bool blocking_lock,
1245                                          struct blocking_lock_record *blr)
1246 {
1247         SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
1248
1249         /* Note: blr is not used in the default implementation. */
1250         return brl_lock_windows_default(br_lck, plock, blocking_lock);
1251 }
1252
1253 static bool vfswrap_brl_unlock_windows(struct vfs_handle_struct *handle,
1254                                        struct messaging_context *msg_ctx,
1255                                        struct byte_range_lock *br_lck,
1256                                        const struct lock_struct *plock)
1257 {
1258         SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
1259
1260         return brl_unlock_windows_default(msg_ctx, br_lck, plock);
1261 }
1262
1263 static bool vfswrap_brl_cancel_windows(struct vfs_handle_struct *handle,
1264                                        struct byte_range_lock *br_lck,
1265                                        struct lock_struct *plock,
1266                                        struct blocking_lock_record *blr)
1267 {
1268         SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
1269
1270         /* Note: blr is not used in the default implementation. */
1271         return brl_lock_cancel_default(br_lck, plock);
1272 }
1273
1274 static bool vfswrap_strict_lock(struct vfs_handle_struct *handle,
1275                                 files_struct *fsp,
1276                                 struct lock_struct *plock)
1277 {
1278         SMB_ASSERT(plock->lock_type == READ_LOCK ||
1279             plock->lock_type == WRITE_LOCK);
1280
1281         return strict_lock_default(fsp, plock);
1282 }
1283
1284 static void vfswrap_strict_unlock(struct vfs_handle_struct *handle,
1285                                 files_struct *fsp,
1286                                 struct lock_struct *plock)
1287 {
1288         SMB_ASSERT(plock->lock_type == READ_LOCK ||
1289             plock->lock_type == WRITE_LOCK);
1290
1291         strict_unlock_default(fsp, plock);
1292 }
1293
1294 /* NT ACL operations. */
1295
1296 static NTSTATUS vfswrap_fget_nt_acl(vfs_handle_struct *handle,
1297                                     files_struct *fsp,
1298                                     uint32 security_info,
1299                                     struct security_descriptor **ppdesc)
1300 {
1301         NTSTATUS result;
1302
1303         START_PROFILE(fget_nt_acl);
1304         result = posix_fget_nt_acl(fsp, security_info, ppdesc);
1305         END_PROFILE(fget_nt_acl);
1306         return result;
1307 }
1308
1309 static NTSTATUS vfswrap_get_nt_acl(vfs_handle_struct *handle,
1310                                    const char *name,
1311                                    uint32 security_info,
1312                                    struct security_descriptor **ppdesc)
1313 {
1314         NTSTATUS result;
1315
1316         START_PROFILE(get_nt_acl);
1317         result = posix_get_nt_acl(handle->conn, name, security_info, ppdesc);
1318         END_PROFILE(get_nt_acl);
1319         return result;
1320 }
1321
1322 static NTSTATUS vfswrap_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const struct security_descriptor *psd)
1323 {
1324         NTSTATUS result;
1325
1326         START_PROFILE(fset_nt_acl);
1327         result = set_nt_acl(fsp, security_info_sent, psd);
1328         END_PROFILE(fset_nt_acl);
1329         return result;
1330 }
1331
1332 static int vfswrap_chmod_acl(vfs_handle_struct *handle,  const char *name, mode_t mode)
1333 {
1334 #ifdef HAVE_NO_ACL
1335         errno = ENOSYS;
1336         return -1;
1337 #else
1338         int result;
1339
1340         START_PROFILE(chmod_acl);
1341         result = chmod_acl(handle->conn, name, mode);
1342         END_PROFILE(chmod_acl);
1343         return result;
1344 #endif
1345 }
1346
1347 static int vfswrap_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
1348 {
1349 #ifdef HAVE_NO_ACL
1350         errno = ENOSYS;
1351         return -1;
1352 #else
1353         int result;
1354
1355         START_PROFILE(fchmod_acl);
1356         result = fchmod_acl(fsp, mode);
1357         END_PROFILE(fchmod_acl);
1358         return result;
1359 #endif
1360 }
1361
1362 static int vfswrap_sys_acl_get_entry(vfs_handle_struct *handle,  SMB_ACL_T theacl, int entry_id, SMB_ACL_ENTRY_T *entry_p)
1363 {
1364         return sys_acl_get_entry(theacl, entry_id, entry_p);
1365 }
1366
1367 static int vfswrap_sys_acl_get_tag_type(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry_d, SMB_ACL_TAG_T *tag_type_p)
1368 {
1369         return sys_acl_get_tag_type(entry_d, tag_type_p);
1370 }
1371
1372 static int vfswrap_sys_acl_get_permset(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry_d, SMB_ACL_PERMSET_T *permset_p)
1373 {
1374         return sys_acl_get_permset(entry_d, permset_p);
1375 }
1376
1377 static void * vfswrap_sys_acl_get_qualifier(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry_d)
1378 {
1379         return sys_acl_get_qualifier(entry_d);
1380 }
1381
1382 static SMB_ACL_T vfswrap_sys_acl_get_file(vfs_handle_struct *handle,  const char *path_p, SMB_ACL_TYPE_T type)
1383 {
1384         return sys_acl_get_file(handle, path_p, type);
1385 }
1386
1387 static SMB_ACL_T vfswrap_sys_acl_get_fd(vfs_handle_struct *handle, files_struct *fsp)
1388 {
1389         return sys_acl_get_fd(handle, fsp);
1390 }
1391
1392 static int vfswrap_sys_acl_clear_perms(vfs_handle_struct *handle,  SMB_ACL_PERMSET_T permset)
1393 {
1394         return sys_acl_clear_perms(permset);
1395 }
1396
1397 static int vfswrap_sys_acl_add_perm(vfs_handle_struct *handle,  SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm)
1398 {
1399         return sys_acl_add_perm(permset, perm);
1400 }
1401
1402 static char * vfswrap_sys_acl_to_text(vfs_handle_struct *handle,  SMB_ACL_T theacl, ssize_t *plen)
1403 {
1404         return sys_acl_to_text(theacl, plen);
1405 }
1406
1407 static SMB_ACL_T vfswrap_sys_acl_init(vfs_handle_struct *handle,  int count)
1408 {
1409         return sys_acl_init(count);
1410 }
1411
1412 static int vfswrap_sys_acl_create_entry(vfs_handle_struct *handle,  SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry)
1413 {
1414         return sys_acl_create_entry(pacl, pentry);
1415 }
1416
1417 static int vfswrap_sys_acl_set_tag_type(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry, SMB_ACL_TAG_T tagtype)
1418 {
1419         return sys_acl_set_tag_type(entry, tagtype);
1420 }
1421
1422 static int vfswrap_sys_acl_set_qualifier(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry, void *qual)
1423 {
1424         return sys_acl_set_qualifier(entry, qual);
1425 }
1426
1427 static int vfswrap_sys_acl_set_permset(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry, SMB_ACL_PERMSET_T permset)
1428 {
1429         return sys_acl_set_permset(entry, permset);
1430 }
1431
1432 static int vfswrap_sys_acl_valid(vfs_handle_struct *handle,  SMB_ACL_T theacl )
1433 {
1434         return sys_acl_valid(theacl );
1435 }
1436
1437 static int vfswrap_sys_acl_set_file(vfs_handle_struct *handle,  const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl)
1438 {
1439         return sys_acl_set_file(handle, name, acltype, theacl);
1440 }
1441
1442 static int vfswrap_sys_acl_set_fd(vfs_handle_struct *handle, files_struct *fsp, SMB_ACL_T theacl)
1443 {
1444         return sys_acl_set_fd(handle, fsp, theacl);
1445 }
1446
1447 static int vfswrap_sys_acl_delete_def_file(vfs_handle_struct *handle,  const char *path)
1448 {
1449         return sys_acl_delete_def_file(handle, path);
1450 }
1451
1452 static int vfswrap_sys_acl_get_perm(vfs_handle_struct *handle,  SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm)
1453 {
1454         return sys_acl_get_perm(permset, perm);
1455 }
1456
1457 static int vfswrap_sys_acl_free_text(vfs_handle_struct *handle,  char *text)
1458 {
1459         return sys_acl_free_text(text);
1460 }
1461
1462 static int vfswrap_sys_acl_free_acl(vfs_handle_struct *handle,  SMB_ACL_T posix_acl)
1463 {
1464         return sys_acl_free_acl(posix_acl);
1465 }
1466
1467 static int vfswrap_sys_acl_free_qualifier(vfs_handle_struct *handle,  void *qualifier, SMB_ACL_TAG_T tagtype)
1468 {
1469         return sys_acl_free_qualifier(qualifier, tagtype);
1470 }
1471
1472 /****************************************************************
1473  Extended attribute operations.
1474 *****************************************************************/
1475
1476 static ssize_t vfswrap_getxattr(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size)
1477 {
1478         return sys_getxattr(path, name, value, size);
1479 }
1480
1481 static ssize_t vfswrap_lgetxattr(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size)
1482 {
1483         return sys_lgetxattr(path, name, value, size);
1484 }
1485
1486 static ssize_t vfswrap_fgetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size)
1487 {
1488         return sys_fgetxattr(fsp->fh->fd, name, value, size);
1489 }
1490
1491 static ssize_t vfswrap_listxattr(struct vfs_handle_struct *handle, const char *path, char *list, size_t size)
1492 {
1493         return sys_listxattr(path, list, size);
1494 }
1495
1496 ssize_t vfswrap_llistxattr(struct vfs_handle_struct *handle, const char *path, char *list, size_t size)
1497 {
1498         return sys_llistxattr(path, list, size);
1499 }
1500
1501 ssize_t vfswrap_flistxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size)
1502 {
1503         return sys_flistxattr(fsp->fh->fd, list, size);
1504 }
1505
1506 static int vfswrap_removexattr(struct vfs_handle_struct *handle, const char *path, const char *name)
1507 {
1508         return sys_removexattr(path, name);
1509 }
1510
1511 static int vfswrap_lremovexattr(struct vfs_handle_struct *handle, const char *path, const char *name)
1512 {
1513         return sys_lremovexattr(path, name);
1514 }
1515
1516 static int vfswrap_fremovexattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name)
1517 {
1518         return sys_fremovexattr(fsp->fh->fd, name);
1519 }
1520
1521 static int vfswrap_setxattr(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags)
1522 {
1523         return sys_setxattr(path, name, value, size, flags);
1524 }
1525
1526 static int vfswrap_lsetxattr(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags)
1527 {
1528         return sys_lsetxattr(path, name, value, size, flags);
1529 }
1530
1531 static int vfswrap_fsetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags)
1532 {
1533         return sys_fsetxattr(fsp->fh->fd, name, value, size, flags);
1534 }
1535
1536 static int vfswrap_aio_read(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1537 {
1538         int ret;
1539         /*
1540          * aio_read must be done as root, because in the glibc aio
1541          * implementation the helper thread needs to be able to send a signal
1542          * to the main thread, even when it has done a seteuid() to a
1543          * different user.
1544          */
1545         become_root();
1546         ret = sys_aio_read(aiocb);
1547         unbecome_root();
1548         return ret;
1549 }
1550
1551 static int vfswrap_aio_write(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1552 {
1553         int ret;
1554         /*
1555          * aio_write must be done as root, because in the glibc aio
1556          * implementation the helper thread needs to be able to send a signal
1557          * to the main thread, even when it has done a seteuid() to a
1558          * different user.
1559          */
1560         become_root();
1561         ret = sys_aio_write(aiocb);
1562         unbecome_root();
1563         return ret;
1564 }
1565
1566 static ssize_t vfswrap_aio_return(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1567 {
1568         return sys_aio_return(aiocb);
1569 }
1570
1571 static int vfswrap_aio_cancel(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1572 {
1573         return sys_aio_cancel(fsp->fh->fd, aiocb);
1574 }
1575
1576 static int vfswrap_aio_error(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1577 {
1578         return sys_aio_error(aiocb);
1579 }
1580
1581 static int vfswrap_aio_fsync(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, SMB_STRUCT_AIOCB *aiocb)
1582 {
1583         return sys_aio_fsync(op, aiocb);
1584 }
1585
1586 static int vfswrap_aio_suspend(struct vfs_handle_struct *handle, struct files_struct *fsp, const SMB_STRUCT_AIOCB * const aiocb[], int n, const struct timespec *timeout)
1587 {
1588         return sys_aio_suspend(aiocb, n, timeout);
1589 }
1590
1591 static bool vfswrap_aio_force(struct vfs_handle_struct *handle, struct files_struct *fsp)
1592 {
1593         return false;
1594 }
1595
1596 static bool vfswrap_is_offline(struct vfs_handle_struct *handle, const char *path, SMB_STRUCT_STAT *sbuf)
1597 {
1598         if (ISDOT(path) || ISDOTDOT(path)) {
1599                 return false;
1600         }
1601
1602         if (!lp_dmapi_support(SNUM(handle->conn)) || !dmapi_have_session()) {
1603 #if defined(ENOTSUP)
1604                 errno = ENOTSUP;
1605 #endif
1606                 return false;
1607         }
1608
1609         return (dmapi_file_flags(path) & FILE_ATTRIBUTE_OFFLINE) != 0;
1610 }
1611
1612 static int vfswrap_set_offline(struct vfs_handle_struct *handle, const char *path)
1613 {
1614         /* We don't know how to set offline bit by default, needs to be overriden in the vfs modules */
1615 #if defined(ENOTSUP)
1616         errno = ENOTSUP;
1617 #endif
1618         return -1;
1619 }
1620
1621 static struct vfs_fn_pointers vfs_default_fns = {
1622         /* Disk operations */
1623
1624         .connect_fn = vfswrap_connect,
1625         .disconnect = vfswrap_disconnect,
1626         .disk_free = vfswrap_disk_free,
1627         .get_quota = vfswrap_get_quota,
1628         .set_quota = vfswrap_set_quota,
1629         .get_shadow_copy_data = vfswrap_get_shadow_copy_data,
1630         .statvfs = vfswrap_statvfs,
1631         .fs_capabilities = vfswrap_fs_capabilities,
1632
1633         /* Directory operations */
1634
1635         .opendir = vfswrap_opendir,
1636         .readdir = vfswrap_readdir,
1637         .seekdir = vfswrap_seekdir,
1638         .telldir = vfswrap_telldir,
1639         .rewind_dir = vfswrap_rewinddir,
1640         .mkdir = vfswrap_mkdir,
1641         .rmdir = vfswrap_rmdir,
1642         .closedir = vfswrap_closedir,
1643         .init_search_op = vfswrap_init_search_op,
1644
1645         /* File operations */
1646
1647         .open = vfswrap_open,
1648         .create_file = vfswrap_create_file,
1649         .close_fn = vfswrap_close,
1650         .vfs_read = vfswrap_read,
1651         .pread = vfswrap_pread,
1652         .write = vfswrap_write,
1653         .pwrite = vfswrap_pwrite,
1654         .lseek = vfswrap_lseek,
1655         .sendfile = vfswrap_sendfile,
1656         .recvfile = vfswrap_recvfile,
1657         .rename = vfswrap_rename,
1658         .fsync = vfswrap_fsync,
1659         .stat = vfswrap_stat,
1660         .fstat = vfswrap_fstat,
1661         .lstat = vfswrap_lstat,
1662         .get_alloc_size = vfswrap_get_alloc_size,
1663         .unlink = vfswrap_unlink,
1664         .chmod = vfswrap_chmod,
1665         .fchmod = vfswrap_fchmod,
1666         .chown = vfswrap_chown,
1667         .fchown = vfswrap_fchown,
1668         .lchown = vfswrap_lchown,
1669         .chdir = vfswrap_chdir,
1670         .getwd = vfswrap_getwd,
1671         .ntimes = vfswrap_ntimes,
1672         .ftruncate = vfswrap_ftruncate,
1673         .fallocate = vfswrap_fallocate,
1674         .lock = vfswrap_lock,
1675         .kernel_flock = vfswrap_kernel_flock,
1676         .linux_setlease = vfswrap_linux_setlease,
1677         .getlock = vfswrap_getlock,
1678         .symlink = vfswrap_symlink,
1679         .vfs_readlink = vfswrap_readlink,
1680         .link = vfswrap_link,
1681         .mknod = vfswrap_mknod,
1682         .realpath = vfswrap_realpath,
1683         .notify_watch = vfswrap_notify_watch,
1684         .chflags = vfswrap_chflags,
1685         .file_id_create = vfswrap_file_id_create,
1686         .streaminfo = vfswrap_streaminfo,
1687         .get_real_filename = vfswrap_get_real_filename,
1688         .connectpath = vfswrap_connectpath,
1689         .brl_lock_windows = vfswrap_brl_lock_windows,
1690         .brl_unlock_windows = vfswrap_brl_unlock_windows,
1691         .brl_cancel_windows = vfswrap_brl_cancel_windows,
1692         .strict_lock = vfswrap_strict_lock,
1693         .strict_unlock = vfswrap_strict_unlock,
1694         .translate_name = vfswrap_translate_name,
1695
1696         /* NT ACL operations. */
1697
1698         .fget_nt_acl = vfswrap_fget_nt_acl,
1699         .get_nt_acl = vfswrap_get_nt_acl,
1700         .fset_nt_acl = vfswrap_fset_nt_acl,
1701
1702         /* POSIX ACL operations. */
1703
1704         .chmod_acl = vfswrap_chmod_acl,
1705         .fchmod_acl = vfswrap_fchmod_acl,
1706
1707         .sys_acl_get_entry = vfswrap_sys_acl_get_entry,
1708         .sys_acl_get_tag_type = vfswrap_sys_acl_get_tag_type,
1709         .sys_acl_get_permset = vfswrap_sys_acl_get_permset,
1710         .sys_acl_get_qualifier = vfswrap_sys_acl_get_qualifier,
1711         .sys_acl_get_file = vfswrap_sys_acl_get_file,
1712         .sys_acl_get_fd = vfswrap_sys_acl_get_fd,
1713         .sys_acl_clear_perms = vfswrap_sys_acl_clear_perms,
1714         .sys_acl_add_perm = vfswrap_sys_acl_add_perm,
1715         .sys_acl_to_text = vfswrap_sys_acl_to_text,
1716         .sys_acl_init = vfswrap_sys_acl_init,
1717         .sys_acl_create_entry = vfswrap_sys_acl_create_entry,
1718         .sys_acl_set_tag_type = vfswrap_sys_acl_set_tag_type,
1719         .sys_acl_set_qualifier = vfswrap_sys_acl_set_qualifier,
1720         .sys_acl_set_permset = vfswrap_sys_acl_set_permset,
1721         .sys_acl_valid = vfswrap_sys_acl_valid,
1722         .sys_acl_set_file = vfswrap_sys_acl_set_file,
1723         .sys_acl_set_fd = vfswrap_sys_acl_set_fd,
1724         .sys_acl_delete_def_file = vfswrap_sys_acl_delete_def_file,
1725         .sys_acl_get_perm = vfswrap_sys_acl_get_perm,
1726         .sys_acl_free_text = vfswrap_sys_acl_free_text,
1727         .sys_acl_free_acl = vfswrap_sys_acl_free_acl,
1728         .sys_acl_free_qualifier = vfswrap_sys_acl_free_qualifier,
1729
1730         /* EA operations. */
1731         .getxattr = vfswrap_getxattr,
1732         .lgetxattr = vfswrap_lgetxattr,
1733         .fgetxattr = vfswrap_fgetxattr,
1734         .listxattr = vfswrap_listxattr,
1735         .llistxattr = vfswrap_llistxattr,
1736         .flistxattr = vfswrap_flistxattr,
1737         .removexattr = vfswrap_removexattr,
1738         .lremovexattr = vfswrap_lremovexattr,
1739         .fremovexattr = vfswrap_fremovexattr,
1740         .setxattr = vfswrap_setxattr,
1741         .lsetxattr = vfswrap_lsetxattr,
1742         .fsetxattr = vfswrap_fsetxattr,
1743
1744         /* aio operations */
1745         .aio_read = vfswrap_aio_read,
1746         .aio_write = vfswrap_aio_write,
1747         .aio_return_fn = vfswrap_aio_return,
1748         .aio_cancel = vfswrap_aio_cancel,
1749         .aio_error_fn = vfswrap_aio_error,
1750         .aio_fsync = vfswrap_aio_fsync,
1751         .aio_suspend = vfswrap_aio_suspend,
1752         .aio_force = vfswrap_aio_force,
1753
1754         /* offline operations */
1755         .is_offline = vfswrap_is_offline,
1756         .set_offline = vfswrap_set_offline
1757 };
1758
1759 NTSTATUS vfs_default_init(void);
1760 NTSTATUS vfs_default_init(void)
1761 {
1762         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
1763                                 DEFAULT_VFS_MODULE_NAME, &vfs_default_fns);
1764 }
1765
1766