source/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 SMB_BIG_UINT vfswrap_disk_free(vfs_handle_struct *handle,  const char *path, bool small_query, SMB_BIG_UINT *bsize,
  44                                SMB_BIG_UINT *dfree, SMB_BIG_UINT *dsize)
  45 {
  46         SMB_BIG_UINT 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 {
  95 #if defined(DARWINOS)
  96         struct vfs_statvfs_struct statbuf;
  97         ZERO_STRUCT(statbuf);
  98         sys_statvfs(handle->conn->connectpath, &statbuf);
  99         return statbuf.FsCapabilities;
 100 #endif
 101         return FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
 102 }
 103
 104 /* Directory operations */
 105
 106 static SMB_STRUCT_DIR *vfswrap_opendir(vfs_handle_struct *handle,  const char *fname, const char *mask, uint32 attr)
 107 {
 108         SMB_STRUCT_DIR *result;
 109
 110         START_PROFILE(syscall_opendir);
 111         result = sys_opendir(fname);
 112         END_PROFILE(syscall_opendir);
 113         return result;
 114 }
 115
 116 static SMB_STRUCT_DIRENT *vfswrap_readdir(vfs_handle_struct *handle,  SMB_STRUCT_DIR *dirp)
 117 {
 118         SMB_STRUCT_DIRENT *result;
 119
 120         START_PROFILE(syscall_readdir);
 121         result = sys_readdir(dirp);
 122         END_PROFILE(syscall_readdir);
 123         return result;
 124 }
 125
 126 static void vfswrap_seekdir(vfs_handle_struct *handle,  SMB_STRUCT_DIR *dirp, long offset)
 127 {
 128         START_PROFILE(syscall_seekdir);
 129         sys_seekdir(dirp, offset);
 130         END_PROFILE(syscall_seekdir);
 131 }
 132
 133 static long vfswrap_telldir(vfs_handle_struct *handle,  SMB_STRUCT_DIR *dirp)
 134 {
 135         long result;
 136         START_PROFILE(syscall_telldir);
 137         result = sys_telldir(dirp);
 138         END_PROFILE(syscall_telldir);
 139         return result;
 140 }
 141
 142 static void vfswrap_rewinddir(vfs_handle_struct *handle,  SMB_STRUCT_DIR *dirp)
 143 {
 144         START_PROFILE(syscall_rewinddir);
 145         sys_rewinddir(dirp);
 146         END_PROFILE(syscall_rewinddir);
 147 }
 148
 149 static int vfswrap_mkdir(vfs_handle_struct *handle,  const char *path, mode_t mode)
 150 {
 151         int result;
 152         bool has_dacl = False;
 153
 154         START_PROFILE(syscall_mkdir);
 155
 156         if (lp_inherit_acls(SNUM(handle->conn)) && (has_dacl = directory_has_default_acl(handle->conn, parent_dirname(path))))
 157                 mode = 0777;
 158
 159         result = mkdir(path, mode);
 160
 161         if (result == 0 && !has_dacl) {
 162                 /*
 163                  * We need to do this as the default behavior of POSIX ACLs
 164                  * is to set the mask to be the requested group permission
 165                  * bits, not the group permission bits to be the requested
 166                  * group permission bits. This is not what we want, as it will
 167                  * mess up any inherited ACL bits that were set. JRA.
 168                  */
 169                 int saved_errno = errno; /* We may get ENOSYS */
 170                 if ((SMB_VFS_CHMOD_ACL(handle->conn, path, mode) == -1) && (errno == ENOSYS))
 171                         errno = saved_errno;
 172         }
 173
 174         END_PROFILE(syscall_mkdir);
 175         return result;
 176 }
 177
 178 static int vfswrap_rmdir(vfs_handle_struct *handle,  const char *path)
 179 {
 180         int result;
 181
 182         START_PROFILE(syscall_rmdir);
 183         result = rmdir(path);
 184         END_PROFILE(syscall_rmdir);
 185         return result;
 186 }
 187
 188 static int vfswrap_closedir(vfs_handle_struct *handle,  SMB_STRUCT_DIR *dirp)
 189 {
 190         int result;
 191
 192         START_PROFILE(syscall_closedir);
 193         result = sys_closedir(dirp);
 194         END_PROFILE(syscall_closedir);
 195         return result;
 196 }
 197
 198 /* File operations */
 199
 200 static int vfswrap_open(vfs_handle_struct *handle,  const char *fname,
 201         files_struct *fsp, int flags, mode_t mode)
 202 {
 203         int result;
 204
 205         START_PROFILE(syscall_open);
 206         result = sys_open(fname, flags, mode);
 207         END_PROFILE(syscall_open);
 208         return result;
 209 }
 210
 211 static int vfswrap_close(vfs_handle_struct *handle, files_struct *fsp)
 212 {
 213         int result;
 214
 215         START_PROFILE(syscall_close);
 216         result = fd_close_posix(fsp);
 217         END_PROFILE(syscall_close);
 218         return result;
 219 }
 220
 221 static ssize_t vfswrap_read(vfs_handle_struct *handle, files_struct *fsp, void *data, size_t n)
 222 {
 223         ssize_t result;
 224
 225         START_PROFILE_BYTES(syscall_read, n);
 226         result = sys_read(fsp->fh->fd, data, n);
 227         END_PROFILE(syscall_read);
 228         return result;
 229 }
 230
 231 static ssize_t vfswrap_pread(vfs_handle_struct *handle, files_struct *fsp, void *data,
 232                         size_t n, SMB_OFF_T offset)
 233 {
 234         ssize_t result;
 235
 236 #if defined(HAVE_PREAD) || defined(HAVE_PREAD64)
 237         START_PROFILE_BYTES(syscall_pread, n);
 238         result = sys_pread(fsp->fh->fd, data, n, offset);
 239         END_PROFILE(syscall_pread);
 240
 241         if (result == -1 && errno == ESPIPE) {
 242                 /* Maintain the fiction that pipes can be seeked (sought?) on. */
 243                 result = SMB_VFS_READ(fsp, data, n);
 244                 fsp->fh->pos = 0;
 245         }
 246
 247 #else /* HAVE_PREAD */
 248         SMB_OFF_T   curr;
 249         int lerrno;
 250
 251         curr = SMB_VFS_LSEEK(fsp, 0, SEEK_CUR);
 252         if (curr == -1 && errno == ESPIPE) {
 253                 /* Maintain the fiction that pipes can be seeked (sought?) on. */
 254                 result = SMB_VFS_READ(fsp, data, n);
 255                 fsp->fh->pos = 0;
 256                 return result;
 257         }
 258
 259         if (SMB_VFS_LSEEK(fsp, offset, SEEK_SET) == -1) {
 260                 return -1;
 261         }
 262
 263         errno = 0;
 264         result = SMB_VFS_READ(fsp, data, n);
 265         lerrno = errno;
 266
 267         SMB_VFS_LSEEK(fsp, curr, SEEK_SET);
 268         errno = lerrno;
 269
 270 #endif /* HAVE_PREAD */
 271
 272         return result;
 273 }
 274
 275 static ssize_t vfswrap_write(vfs_handle_struct *handle, files_struct *fsp, const void *data, size_t n)
 276 {
 277         ssize_t result;
 278
 279         START_PROFILE_BYTES(syscall_write, n);
 280         result = sys_write(fsp->fh->fd, data, n);
 281         END_PROFILE(syscall_write);
 282         return result;
 283 }
 284
 285 static ssize_t vfswrap_pwrite(vfs_handle_struct *handle, files_struct *fsp, const void *data,
 286                         size_t n, SMB_OFF_T offset)
 287 {
 288         ssize_t result;
 289
 290 #if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
 291         START_PROFILE_BYTES(syscall_pwrite, n);
 292         result = sys_pwrite(fsp->fh->fd, data, n, offset);
 293         END_PROFILE(syscall_pwrite);
 294
 295         if (result == -1 && errno == ESPIPE) {
 296                 /* Maintain the fiction that pipes can be sought on. */
 297                 result = SMB_VFS_WRITE(fsp, data, n);
 298         }
 299
 300 #else /* HAVE_PWRITE */
 301         SMB_OFF_T   curr;
 302         int         lerrno;
 303
 304         curr = SMB_VFS_LSEEK(fsp, 0, SEEK_CUR);
 305         if (curr == -1) {
 306                 return -1;
 307         }
 308
 309         if (SMB_VFS_LSEEK(fsp, offset, SEEK_SET) == -1) {
 310                 return -1;
 311         }
 312
 313         result = SMB_VFS_WRITE(fsp, data, n);
 314         lerrno = errno;
 315
 316         SMB_VFS_LSEEK(fsp, curr, SEEK_SET);
 317         errno = lerrno;
 318
 319 #endif /* HAVE_PWRITE */
 320
 321         return result;
 322 }
 323
 324 static SMB_OFF_T vfswrap_lseek(vfs_handle_struct *handle, files_struct *fsp, SMB_OFF_T offset, int whence)
 325 {
 326         SMB_OFF_T result = 0;
 327
 328         START_PROFILE(syscall_lseek);
 329
 330         /* Cope with 'stat' file opens. */
 331         if (fsp->fh->fd != -1)
 332                 result = sys_lseek(fsp->fh->fd, offset, whence);
 333
 334         /*
 335          * We want to maintain the fiction that we can seek
 336          * on a fifo for file system purposes. This allows
 337          * people to set up UNIX fifo's that feed data to Windows
 338          * applications. JRA.
 339          */
 340
 341         if((result == -1) && (errno == ESPIPE)) {
 342                 result = 0;
 343                 errno = 0;
 344         }
 345
 346         END_PROFILE(syscall_lseek);
 347         return result;
 348 }
 349
 350 static ssize_t vfswrap_sendfile(vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *hdr,
 351                         SMB_OFF_T offset, size_t n)
 352 {
 353         ssize_t result;
 354
 355         START_PROFILE_BYTES(syscall_sendfile, n);
 356         result = sys_sendfile(tofd, fromfsp->fh->fd, hdr, offset, n);
 357         END_PROFILE(syscall_sendfile);
 358         return result;
 359 }
 360
 361 static ssize_t vfswrap_recvfile(vfs_handle_struct *handle,
 362                         int fromfd,
 363                         files_struct *tofsp,
 364                         SMB_OFF_T offset,
 365                         size_t n)
 366 {
 367         ssize_t result;
 368
 369         START_PROFILE_BYTES(syscall_recvfile, n);
 370         result = sys_recvfile(fromfd, tofsp->fh->fd, offset, n);
 371         END_PROFILE(syscall_recvfile);
 372         return result;
 373 }
 374
 375 /*********************************************************
 376  For rename across filesystems Patch from Warren Birnbaum
 377  <warrenb@hpcvscdp.cv.hp.com>
 378 **********************************************************/
 379
 380 static int copy_reg(const char *source, const char *dest)
 381 {
 382         SMB_STRUCT_STAT source_stats;
 383         int saved_errno;
 384         int ifd = -1;
 385         int ofd = -1;
 386
 387         if (sys_lstat (source, &source_stats) == -1)
 388                 return -1;
 389
 390         if (!S_ISREG (source_stats.st_mode))
 391                 return -1;
 392
 393         if((ifd = sys_open (source, O_RDONLY, 0)) < 0)
 394                 return -1;
 395
 396         if (unlink (dest) && errno != ENOENT)
 397                 return -1;
 398
 399 #ifdef O_NOFOLLOW
 400         if((ofd = sys_open (dest, O_WRONLY | O_CREAT | O_TRUNC | O_NOFOLLOW, 0600)) < 0 )
 401 #else
 402         if((ofd = sys_open (dest, O_WRONLY | O_CREAT | O_TRUNC , 0600)) < 0 )
 403 #endif
 404                 goto err;
 405
 406         if (transfer_file(ifd, ofd, (size_t)-1) == -1)
 407                 goto err;
 408
 409         /*
 410          * Try to preserve ownership.  For non-root it might fail, but that's ok.
 411          * But root probably wants to know, e.g. if NFS disallows it.
 412          */
 413
 414 #ifdef HAVE_FCHOWN
 415         if ((fchown(ofd, source_stats.st_uid, source_stats.st_gid) == -1) && (errno != EPERM))
 416 #else
 417         if ((chown(dest, source_stats.st_uid, source_stats.st_gid) == -1) && (errno != EPERM))
 418 #endif
 419                 goto err;
 420
 421         /*
 422          * fchown turns off set[ug]id bits for non-root,
 423          * so do the chmod last.
 424          */
 425
 426 #if defined(HAVE_FCHMOD)
 427         if (fchmod (ofd, source_stats.st_mode & 07777))
 428 #else
 429         if (chmod (dest, source_stats.st_mode & 07777))
 430 #endif
 431                 goto err;
 432
 433         if (close (ifd) == -1)
 434                 goto err;
 435
 436         if (close (ofd) == -1)
 437                 return -1;
 438
 439         /* Try to copy the old file's modtime and access time.  */
 440         {
 441                 struct utimbuf tv;
 442
 443                 tv.actime = source_stats.st_atime;
 444                 tv.modtime = source_stats.st_mtime;
 445                 utime(dest, &tv);
 446         }
 447
 448         if (unlink (source) == -1)
 449                 return -1;
 450
 451         return 0;
 452
 453   err:
 454
 455         saved_errno = errno;
 456         if (ifd != -1)
 457                 close(ifd);
 458         if (ofd != -1)
 459                 close(ofd);
 460         errno = saved_errno;
 461         return -1;
 462 }
 463
 464 static int vfswrap_rename(vfs_handle_struct *handle,  const char *oldname, const char *newname)
 465 {
 466         int result;
 467
 468         START_PROFILE(syscall_rename);
 469         result = rename(oldname, newname);
 470         if ((result == -1) && (errno == EXDEV)) {
 471                 /* Rename across filesystems needed. */
 472                 result = copy_reg(oldname, newname);
 473         }
 474
 475         END_PROFILE(syscall_rename);
 476         return result;
 477 }
 478
 479 static int vfswrap_fsync(vfs_handle_struct *handle, files_struct *fsp)
 480 {
 481 #ifdef HAVE_FSYNC
 482         int result;
 483
 484         START_PROFILE(syscall_fsync);
 485         result = fsync(fsp->fh->fd);
 486         END_PROFILE(syscall_fsync);
 487         return result;
 488 #else
 489         return 0;
 490 #endif
 491 }
 492
 493 static int vfswrap_stat(vfs_handle_struct *handle,  const char *fname, SMB_STRUCT_STAT *sbuf)
 494 {
 495         int result;
 496
 497         START_PROFILE(syscall_stat);
 498         result = sys_stat(fname, sbuf);
 499         END_PROFILE(syscall_stat);
 500         return result;
 501 }
 502
 503 static int vfswrap_fstat(vfs_handle_struct *handle, files_struct *fsp, SMB_STRUCT_STAT *sbuf)
 504 {
 505         int result;
 506
 507         START_PROFILE(syscall_fstat);
 508         result = sys_fstat(fsp->fh->fd, sbuf);
 509         END_PROFILE(syscall_fstat);
 510         return result;
 511 }
 512
 513 int vfswrap_lstat(vfs_handle_struct *handle,  const char *path, SMB_STRUCT_STAT *sbuf)
 514 {
 515         int result;
 516
 517         START_PROFILE(syscall_lstat);
 518         result = sys_lstat(path, sbuf);
 519         END_PROFILE(syscall_lstat);
 520         return result;
 521 }
 522
 523 static int vfswrap_unlink(vfs_handle_struct *handle,  const char *path)
 524 {
 525         int result;
 526
 527         START_PROFILE(syscall_unlink);
 528         result = unlink(path);
 529         END_PROFILE(syscall_unlink);
 530         return result;
 531 }
 532
 533 static int vfswrap_chmod(vfs_handle_struct *handle,  const char *path, mode_t mode)
 534 {
 535         int result;
 536
 537         START_PROFILE(syscall_chmod);
 538
 539         /*
 540          * We need to do this due to the fact that the default POSIX ACL
 541          * chmod modifies the ACL *mask* for the group owner, not the
 542          * group owner bits directly. JRA.
 543          */
 544
 545
 546         {
 547                 int saved_errno = errno; /* We might get ENOSYS */
 548                 if ((result = SMB_VFS_CHMOD_ACL(handle->conn, path, mode)) == 0) {
 549                         END_PROFILE(syscall_chmod);
 550                         return result;
 551                 }
 552                 /* Error - return the old errno. */
 553                 errno = saved_errno;
 554         }
 555
 556         result = chmod(path, mode);
 557         END_PROFILE(syscall_chmod);
 558         return result;
 559 }
 560
 561 static int vfswrap_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
 562 {
 563         int result;
 564
 565         START_PROFILE(syscall_fchmod);
 566
 567         /*
 568          * We need to do this due to the fact that the default POSIX ACL
 569          * chmod modifies the ACL *mask* for the group owner, not the
 570          * group owner bits directly. JRA.
 571          */
 572
 573         {
 574                 int saved_errno = errno; /* We might get ENOSYS */
 575                 if ((result = SMB_VFS_FCHMOD_ACL(fsp, mode)) == 0) {
 576                         END_PROFILE(syscall_fchmod);
 577                         return result;
 578                 }
 579                 /* Error - return the old errno. */
 580                 errno = saved_errno;
 581         }
 582
 583 #if defined(HAVE_FCHMOD)
 584         result = fchmod(fsp->fh->fd, mode);
 585 #else
 586         result = -1;
 587         errno = ENOSYS;
 588 #endif
 589
 590         END_PROFILE(syscall_fchmod);
 591         return result;
 592 }
 593
 594 static int vfswrap_chown(vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
 595 {
 596         int result;
 597
 598         START_PROFILE(syscall_chown);
 599         result = sys_chown(path, uid, gid);
 600         END_PROFILE(syscall_chown);
 601         return result;
 602 }
 603
 604 static int vfswrap_fchown(vfs_handle_struct *handle, files_struct *fsp, uid_t uid, gid_t gid)
 605 {
 606 #ifdef HAVE_FCHOWN
 607         int result;
 608
 609         START_PROFILE(syscall_fchown);
 610         result = fchown(fsp->fh->fd, uid, gid);
 611         END_PROFILE(syscall_fchown);
 612         return result;
 613 #else
 614         errno = ENOSYS;
 615         return -1;
 616 #endif
 617 }
 618
 619 static int vfswrap_lchown(vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
 620 {
 621         int result;
 622
 623         START_PROFILE(syscall_lchown);
 624         result = sys_lchown(path, uid, gid);
 625         END_PROFILE(syscall_lchown);
 626         return result;
 627 }
 628
 629 static int vfswrap_chdir(vfs_handle_struct *handle,  const char *path)
 630 {
 631         int result;
 632
 633         START_PROFILE(syscall_chdir);
 634         result = chdir(path);
 635         END_PROFILE(syscall_chdir);
 636         return result;
 637 }
 638
 639 static char *vfswrap_getwd(vfs_handle_struct *handle,  char *path)
 640 {
 641         char *result;
 642
 643         START_PROFILE(syscall_getwd);
 644         result = sys_getwd(path);
 645         END_PROFILE(syscall_getwd);
 646         return result;
 647 }
 648
 649 /*********************************************************************
 650  nsec timestamp resolution call. Convert down to whatever the underlying
 651  system will support.
 652 **********************************************************************/
 653
 654 static int vfswrap_ntimes(vfs_handle_struct *handle, const char *path, const struct timespec ts[2])
 655 {
 656         int result;
 657
 658         START_PROFILE(syscall_ntimes);
 659 #if defined(HAVE_UTIMES)
 660         if (ts != NULL) {
 661                 struct timeval tv[2];
 662                 tv[0] = convert_timespec_to_timeval(ts[0]);
 663                 tv[1] = convert_timespec_to_timeval(ts[1]);
 664                 result = utimes(path, tv);
 665         } else {
 666                 result = utimes(path, NULL);
 667         }
 668 #elif defined(HAVE_UTIME)
 669         if (ts != NULL) {
 670                 struct utimbuf times;
 671                 times.actime = convert_timespec_to_time_t(ts[0]);
 672                 times.modtime = convert_timespec_to_time_t(ts[1]);
 673                 result = utime(path, times);
 674         } else {
 675                 result = utime(path, NULL);
 676         }
 677 #else
 678         errno = ENOSYS;
 679         result = -1;
 680 #endif
 681         END_PROFILE(syscall_ntimes);
 682         return result;
 683 }
 684
 685 /*********************************************************************
 686  A version of ftruncate that will write the space on disk if strict
 687  allocate is set.
 688 **********************************************************************/
 689
 690 static int strict_allocate_ftruncate(vfs_handle_struct *handle, files_struct *fsp, SMB_OFF_T len)
 691 {
 692         SMB_STRUCT_STAT st;
 693         SMB_OFF_T currpos = SMB_VFS_LSEEK(fsp, 0, SEEK_CUR);
 694         unsigned char zero_space[4096];
 695         SMB_OFF_T space_to_write;
 696
 697         if (currpos == -1)
 698                 return -1;
 699
 700         if (SMB_VFS_FSTAT(fsp, &st) == -1)
 701                 return -1;
 702
 703         space_to_write = len - st.st_size;
 704
 705 #ifdef S_ISFIFO
 706         if (S_ISFIFO(st.st_mode))
 707                 return 0;
 708 #endif
 709
 710         if (st.st_size == len)
 711                 return 0;
 712
 713         /* Shrink - just ftruncate. */
 714         if (st.st_size > len)
 715                 return sys_ftruncate(fsp->fh->fd, len);
 716
 717         /* Write out the real space on disk. */
 718         if (SMB_VFS_LSEEK(fsp, st.st_size, SEEK_SET) != st.st_size)
 719                 return -1;
 720
 721         space_to_write = len - st.st_size;
 722
 723         memset(zero_space, '\0', sizeof(zero_space));
 724         while ( space_to_write > 0) {
 725                 SMB_OFF_T retlen;
 726                 SMB_OFF_T current_len_to_write = MIN(sizeof(zero_space),space_to_write);
 727
 728                 retlen = SMB_VFS_WRITE(fsp,(char *)zero_space,current_len_to_write);
 729                 if (retlen <= 0)
 730                         return -1;
 731
 732                 space_to_write -= retlen;
 733         }
 734
 735         /* Seek to where we were */
 736         if (SMB_VFS_LSEEK(fsp, currpos, SEEK_SET) != currpos)
 737                 return -1;
 738
 739         return 0;
 740 }
 741
 742 static int vfswrap_ftruncate(vfs_handle_struct *handle, files_struct *fsp, SMB_OFF_T len)
 743 {
 744         int result = -1;
 745         SMB_STRUCT_STAT st;
 746         char c = 0;
 747         SMB_OFF_T currpos;
 748
 749         START_PROFILE(syscall_ftruncate);
 750
 751         if (lp_strict_allocate(SNUM(fsp->conn))) {
 752                 result = strict_allocate_ftruncate(handle, fsp, len);
 753                 END_PROFILE(syscall_ftruncate);
 754                 return result;
 755         }
 756
 757         /* we used to just check HAVE_FTRUNCATE_EXTEND and only use
 758            sys_ftruncate if the system supports it. Then I discovered that
 759            you can have some filesystems that support ftruncate
 760            expansion and some that don't! On Linux fat can't do
 761            ftruncate extend but ext2 can. */
 762
 763         result = sys_ftruncate(fsp->fh->fd, len);
 764         if (result == 0)
 765                 goto done;
 766
 767         /* According to W. R. Stevens advanced UNIX prog. Pure 4.3 BSD cannot
 768            extend a file with ftruncate. Provide alternate implementation
 769            for this */
 770         currpos = SMB_VFS_LSEEK(fsp, 0, SEEK_CUR);
 771         if (currpos == -1) {
 772                 goto done;
 773         }
 774
 775         /* Do an fstat to see if the file is longer than the requested
 776            size in which case the ftruncate above should have
 777            succeeded or shorter, in which case seek to len - 1 and
 778            write 1 byte of zero */
 779         if (SMB_VFS_FSTAT(fsp, &st) == -1) {
 780                 goto done;
 781         }
 782
 783 #ifdef S_ISFIFO
 784         if (S_ISFIFO(st.st_mode)) {
 785                 result = 0;
 786                 goto done;
 787         }
 788 #endif
 789
 790         if (st.st_size == len) {
 791                 result = 0;
 792                 goto done;
 793         }
 794
 795         if (st.st_size > len) {
 796                 /* the sys_ftruncate should have worked */
 797                 goto done;
 798         }
 799
 800         if (SMB_VFS_LSEEK(fsp, len-1, SEEK_SET) != len -1)
 801                 goto done;
 802
 803         if (SMB_VFS_WRITE(fsp, &c, 1)!=1)
 804                 goto done;
 805
 806         /* Seek to where we were */
 807         if (SMB_VFS_LSEEK(fsp, currpos, SEEK_SET) != currpos)
 808                 goto done;
 809         result = 0;
 810
 811   done:
 812
 813         END_PROFILE(syscall_ftruncate);
 814         return result;
 815 }
 816
 817 static bool vfswrap_lock(vfs_handle_struct *handle, files_struct *fsp, int op, SMB_OFF_T offset, SMB_OFF_T count, int type)
 818 {
 819         bool result;
 820
 821         START_PROFILE(syscall_fcntl_lock);
 822         result =  fcntl_lock(fsp->fh->fd, op, offset, count, type);
 823         END_PROFILE(syscall_fcntl_lock);
 824         return result;
 825 }
 826
 827 static int vfswrap_kernel_flock(vfs_handle_struct *handle, files_struct *fsp,
 828                                 uint32 share_mode)
 829 {
 830         START_PROFILE(syscall_kernel_flock);
 831         kernel_flock(fsp->fh->fd, share_mode);
 832         END_PROFILE(syscall_kernel_flock);
 833         return 0;
 834 }
 835
 836 static bool vfswrap_getlock(vfs_handle_struct *handle, files_struct *fsp, SMB_OFF_T *poffset, SMB_OFF_T *pcount, int *ptype, pid_t *ppid)
 837 {
 838         bool result;
 839
 840         START_PROFILE(syscall_fcntl_getlock);
 841         result =  fcntl_getlock(fsp->fh->fd, poffset, pcount, ptype, ppid);
 842         END_PROFILE(syscall_fcntl_getlock);
 843         return result;
 844 }
 845
 846 static int vfswrap_linux_setlease(vfs_handle_struct *handle, files_struct *fsp,
 847                                 int leasetype)
 848 {
 849         int result = -1;
 850
 851         START_PROFILE(syscall_linux_setlease);
 852
 853 #ifdef HAVE_KERNEL_OPLOCKS_LINUX
 854         /* first set the signal handler */
 855         if(linux_set_lease_sighandler(fsp->fh->fd) == -1) {
 856                 return -1;
 857         }
 858
 859         result = linux_setlease(fsp->fh->fd, leasetype);
 860 #else
 861         errno = ENOSYS;
 862 #endif
 863         END_PROFILE(syscall_linux_setlease);
 864         return result;
 865 }
 866
 867 static int vfswrap_symlink(vfs_handle_struct *handle,  const char *oldpath, const char *newpath)
 868 {
 869         int result;
 870
 871         START_PROFILE(syscall_symlink);
 872         result = sys_symlink(oldpath, newpath);
 873         END_PROFILE(syscall_symlink);
 874         return result;
 875 }
 876
 877 static int vfswrap_readlink(vfs_handle_struct *handle,  const char *path, char *buf, size_t bufsiz)
 878 {
 879         int result;
 880
 881         START_PROFILE(syscall_readlink);
 882         result = sys_readlink(path, buf, bufsiz);
 883         END_PROFILE(syscall_readlink);
 884         return result;
 885 }
 886
 887 static int vfswrap_link(vfs_handle_struct *handle,  const char *oldpath, const char *newpath)
 888 {
 889         int result;
 890
 891         START_PROFILE(syscall_link);
 892         result = sys_link(oldpath, newpath);
 893         END_PROFILE(syscall_link);
 894         return result;
 895 }
 896
 897 static int vfswrap_mknod(vfs_handle_struct *handle,  const char *pathname, mode_t mode, SMB_DEV_T dev)
 898 {
 899         int result;
 900
 901         START_PROFILE(syscall_mknod);
 902         result = sys_mknod(pathname, mode, dev);
 903         END_PROFILE(syscall_mknod);
 904         return result;
 905 }
 906
 907 static char *vfswrap_realpath(vfs_handle_struct *handle,  const char *path, char *resolved_path)
 908 {
 909         char *result;
 910
 911         START_PROFILE(syscall_realpath);
 912         result = sys_realpath(path, resolved_path);
 913         END_PROFILE(syscall_realpath);
 914         return result;
 915 }
 916
 917 static NTSTATUS vfswrap_notify_watch(vfs_handle_struct *vfs_handle,
 918                                      struct sys_notify_context *ctx,
 919                                      struct notify_entry *e,
 920                                      void (*callback)(struct sys_notify_context *ctx,
 921                                                       void *private_data,
 922                                                       struct notify_event *ev),
 923                                      void *private_data, void *handle)
 924 {
 925         /*
 926          * So far inotify is the only supported default notify mechanism. If
 927          * another platform like the the BSD's or a proprietary Unix comes
 928          * along and wants another default, we can play the same trick we
 929          * played with Posix ACLs.
 930          *
 931          * Until that is the case, hard-code inotify here.
 932          */
 933 #ifdef HAVE_INOTIFY
 934         if (lp_kernel_change_notify(ctx->conn->params)) {
 935                 return inotify_watch(ctx, e, callback, private_data, handle);
 936         }
 937 #endif
 938         /*
 939          * Do nothing, leave everything to notify_internal.c
 940          */
 941         return NT_STATUS_OK;
 942 }
 943
 944 static int vfswrap_chflags(vfs_handle_struct *handle, const char *path, int flags)
 945 {
 946 #ifdef HAVE_CHFLAGS
 947         return chflags(path, flags);
 948 #else
 949         errno = ENOSYS;
 950         return -1;
 951 #endif
 952 }
 953
 954 static struct file_id vfswrap_file_id_create(struct vfs_handle_struct *handle, SMB_DEV_T dev, SMB_INO_T inode)
 955 {
 956         return file_id_create_dev(dev, inode);
 957 }
 958
 959 static NTSTATUS vfswrap_streaminfo(vfs_handle_struct *handle,
 960                                    struct files_struct *fsp,
 961                                    const char *fname,
 962                                    TALLOC_CTX *mem_ctx,
 963                                    unsigned int *pnum_streams,
 964                                    struct stream_struct **pstreams)
 965 {
 966         SMB_STRUCT_STAT sbuf;
 967         unsigned int num_streams = 0;
 968         struct stream_struct *streams = NULL;
 969         int ret;
 970
 971         if ((fsp != NULL) && (fsp->is_directory)) {
 972                 /*
 973                  * No default streams on directories
 974                  */
 975                 goto done;
 976         }
 977
 978         if ((fsp != NULL) && (fsp->fh->fd != -1)) {
 979                 ret = SMB_VFS_FSTAT(fsp, &sbuf);
 980         }
 981         else {
 982                 ret = SMB_VFS_STAT(handle->conn, fname, &sbuf);
 983         }
 984
 985         if (ret == -1) {
 986                 return map_nt_error_from_unix(errno);
 987         }
 988
 989         if (S_ISDIR(sbuf.st_mode)) {
 990                 goto done;
 991         }
 992
 993         streams = talloc(mem_ctx, struct stream_struct);
 994
 995         if (streams == NULL) {
 996                 return NT_STATUS_NO_MEMORY;
 997         }
 998
 999         streams->size = sbuf.st_size;
1000         streams->alloc_size = get_allocation_size(handle->conn, fsp, &sbuf);
1001
1002         streams->name = talloc_strdup(streams, "::$DATA");
1003         if (streams->name == NULL) {
1004                 TALLOC_FREE(streams);
1005                 return NT_STATUS_NO_MEMORY;
1006         }
1007
1008         num_streams = 1;
1009  done:
1010         *pnum_streams = num_streams;
1011         *pstreams = streams;
1012         return NT_STATUS_OK;
1013 }
1014
1015 static NTSTATUS vfswrap_fget_nt_acl(vfs_handle_struct *handle,
1016                                     files_struct *fsp,
1017                                     uint32 security_info, SEC_DESC **ppdesc)
1018 {
1019         NTSTATUS result;
1020
1021         START_PROFILE(fget_nt_acl);
1022         result = posix_fget_nt_acl(fsp, security_info, ppdesc);
1023         END_PROFILE(fget_nt_acl);
1024         return result;
1025 }
1026
1027 static NTSTATUS vfswrap_get_nt_acl(vfs_handle_struct *handle,
1028                                    const char *name,
1029                                    uint32 security_info, SEC_DESC **ppdesc)
1030 {
1031         NTSTATUS result;
1032
1033         START_PROFILE(get_nt_acl);
1034         result = posix_get_nt_acl(handle->conn, name, security_info, ppdesc);
1035         END_PROFILE(get_nt_acl);
1036         return result;
1037 }
1038
1039 static NTSTATUS vfswrap_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, SEC_DESC *psd)
1040 {
1041         NTSTATUS result;
1042
1043         START_PROFILE(fset_nt_acl);
1044         result = set_nt_acl(fsp, security_info_sent, psd);
1045         END_PROFILE(fset_nt_acl);
1046         return result;
1047 }
1048
1049 static NTSTATUS vfswrap_set_nt_acl(vfs_handle_struct *handle, files_struct *fsp, const char *name, uint32 security_info_sent, SEC_DESC *psd)
1050 {
1051         NTSTATUS result;
1052
1053         START_PROFILE(set_nt_acl);
1054         result = set_nt_acl(fsp, security_info_sent, psd);
1055         END_PROFILE(set_nt_acl);
1056         return result;
1057 }
1058
1059 static int vfswrap_chmod_acl(vfs_handle_struct *handle,  const char *name, mode_t mode)
1060 {
1061 #ifdef HAVE_NO_ACL
1062         errno = ENOSYS;
1063         return -1;
1064 #else
1065         int result;
1066
1067         START_PROFILE(chmod_acl);
1068         result = chmod_acl(handle->conn, name, mode);
1069         END_PROFILE(chmod_acl);
1070         return result;
1071 #endif
1072 }
1073
1074 static int vfswrap_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
1075 {
1076 #ifdef HAVE_NO_ACL
1077         errno = ENOSYS;
1078         return -1;
1079 #else
1080         int result;
1081
1082         START_PROFILE(fchmod_acl);
1083         result = fchmod_acl(fsp, mode);
1084         END_PROFILE(fchmod_acl);
1085         return result;
1086 #endif
1087 }
1088
1089 static int vfswrap_sys_acl_get_entry(vfs_handle_struct *handle,  SMB_ACL_T theacl, int entry_id, SMB_ACL_ENTRY_T *entry_p)
1090 {
1091         return sys_acl_get_entry(theacl, entry_id, entry_p);
1092 }
1093
1094 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)
1095 {
1096         return sys_acl_get_tag_type(entry_d, tag_type_p);
1097 }
1098
1099 static int vfswrap_sys_acl_get_permset(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry_d, SMB_ACL_PERMSET_T *permset_p)
1100 {
1101         return sys_acl_get_permset(entry_d, permset_p);
1102 }
1103
1104 static void * vfswrap_sys_acl_get_qualifier(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry_d)
1105 {
1106         return sys_acl_get_qualifier(entry_d);
1107 }
1108
1109 static SMB_ACL_T vfswrap_sys_acl_get_file(vfs_handle_struct *handle,  const char *path_p, SMB_ACL_TYPE_T type)
1110 {
1111         return sys_acl_get_file(handle, path_p, type);
1112 }
1113
1114 static SMB_ACL_T vfswrap_sys_acl_get_fd(vfs_handle_struct *handle, files_struct *fsp)
1115 {
1116         return sys_acl_get_fd(handle, fsp);
1117 }
1118
1119 static int vfswrap_sys_acl_clear_perms(vfs_handle_struct *handle,  SMB_ACL_PERMSET_T permset)
1120 {
1121         return sys_acl_clear_perms(permset);
1122 }
1123
1124 static int vfswrap_sys_acl_add_perm(vfs_handle_struct *handle,  SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm)
1125 {
1126         return sys_acl_add_perm(permset, perm);
1127 }
1128
1129 static char * vfswrap_sys_acl_to_text(vfs_handle_struct *handle,  SMB_ACL_T theacl, ssize_t *plen)
1130 {
1131         return sys_acl_to_text(theacl, plen);
1132 }
1133
1134 static SMB_ACL_T vfswrap_sys_acl_init(vfs_handle_struct *handle,  int count)
1135 {
1136         return sys_acl_init(count);
1137 }
1138
1139 static int vfswrap_sys_acl_create_entry(vfs_handle_struct *handle,  SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry)
1140 {
1141         return sys_acl_create_entry(pacl, pentry);
1142 }
1143
1144 static int vfswrap_sys_acl_set_tag_type(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry, SMB_ACL_TAG_T tagtype)
1145 {
1146         return sys_acl_set_tag_type(entry, tagtype);
1147 }
1148
1149 static int vfswrap_sys_acl_set_qualifier(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry, void *qual)
1150 {
1151         return sys_acl_set_qualifier(entry, qual);
1152 }
1153
1154 static int vfswrap_sys_acl_set_permset(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry, SMB_ACL_PERMSET_T permset)
1155 {
1156         return sys_acl_set_permset(entry, permset);
1157 }
1158
1159 static int vfswrap_sys_acl_valid(vfs_handle_struct *handle,  SMB_ACL_T theacl )
1160 {
1161         return sys_acl_valid(theacl );
1162 }
1163
1164 static int vfswrap_sys_acl_set_file(vfs_handle_struct *handle,  const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl)
1165 {
1166         return sys_acl_set_file(handle, name, acltype, theacl);
1167 }
1168
1169 static int vfswrap_sys_acl_set_fd(vfs_handle_struct *handle, files_struct *fsp, SMB_ACL_T theacl)
1170 {
1171         return sys_acl_set_fd(handle, fsp, theacl);
1172 }
1173
1174 static int vfswrap_sys_acl_delete_def_file(vfs_handle_struct *handle,  const char *path)
1175 {
1176         return sys_acl_delete_def_file(handle, path);
1177 }
1178
1179 static int vfswrap_sys_acl_get_perm(vfs_handle_struct *handle,  SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm)
1180 {
1181         return sys_acl_get_perm(permset, perm);
1182 }
1183
1184 static int vfswrap_sys_acl_free_text(vfs_handle_struct *handle,  char *text)
1185 {
1186         return sys_acl_free_text(text);
1187 }
1188
1189 static int vfswrap_sys_acl_free_acl(vfs_handle_struct *handle,  SMB_ACL_T posix_acl)
1190 {
1191         return sys_acl_free_acl(posix_acl);
1192 }
1193
1194 static int vfswrap_sys_acl_free_qualifier(vfs_handle_struct *handle,  void *qualifier, SMB_ACL_TAG_T tagtype)
1195 {
1196         return sys_acl_free_qualifier(qualifier, tagtype);
1197 }
1198
1199 /****************************************************************
1200  Extended attribute operations.
1201 *****************************************************************/
1202
1203 static ssize_t vfswrap_getxattr(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size)
1204 {
1205         return sys_getxattr(path, name, value, size);
1206 }
1207
1208 static ssize_t vfswrap_lgetxattr(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size)
1209 {
1210         return sys_lgetxattr(path, name, value, size);
1211 }
1212
1213 static ssize_t vfswrap_fgetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size)
1214 {
1215         return sys_fgetxattr(fsp->fh->fd, name, value, size);
1216 }
1217
1218 static ssize_t vfswrap_listxattr(struct vfs_handle_struct *handle, const char *path, char *list, size_t size)
1219 {
1220         return sys_listxattr(path, list, size);
1221 }
1222
1223 ssize_t vfswrap_llistxattr(struct vfs_handle_struct *handle, const char *path, char *list, size_t size)
1224 {
1225         return sys_llistxattr(path, list, size);
1226 }
1227
1228 ssize_t vfswrap_flistxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size)
1229 {
1230         return sys_flistxattr(fsp->fh->fd, list, size);
1231 }
1232
1233 static int vfswrap_removexattr(struct vfs_handle_struct *handle, const char *path, const char *name)
1234 {
1235         return sys_removexattr(path, name);
1236 }
1237
1238 static int vfswrap_lremovexattr(struct vfs_handle_struct *handle, const char *path, const char *name)
1239 {
1240         return sys_lremovexattr(path, name);
1241 }
1242
1243 static int vfswrap_fremovexattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name)
1244 {
1245         return sys_fremovexattr(fsp->fh->fd, name);
1246 }
1247
1248 static int vfswrap_setxattr(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags)
1249 {
1250         return sys_setxattr(path, name, value, size, flags);
1251 }
1252
1253 static int vfswrap_lsetxattr(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags)
1254 {
1255         return sys_lsetxattr(path, name, value, size, flags);
1256 }
1257
1258 static int vfswrap_fsetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags)
1259 {
1260         return sys_fsetxattr(fsp->fh->fd, name, value, size, flags);
1261 }
1262
1263 static int vfswrap_aio_read(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1264 {
1265         return sys_aio_read(aiocb);
1266 }
1267
1268 static int vfswrap_aio_write(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1269 {
1270         return sys_aio_write(aiocb);
1271 }
1272
1273 static ssize_t vfswrap_aio_return(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1274 {
1275         return sys_aio_return(aiocb);
1276 }
1277
1278 static int vfswrap_aio_cancel(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1279 {
1280         return sys_aio_cancel(fsp->fh->fd, aiocb);
1281 }
1282
1283 static int vfswrap_aio_error(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1284 {
1285         return sys_aio_error(aiocb);
1286 }
1287
1288 static int vfswrap_aio_fsync(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, SMB_STRUCT_AIOCB *aiocb)
1289 {
1290         return sys_aio_fsync(op, aiocb);
1291 }
1292
1293 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)
1294 {
1295         return sys_aio_suspend(aiocb, n, timeout);
1296 }
1297
1298 static bool vfswrap_aio_force(struct vfs_handle_struct *handle, struct files_struct *fsp)
1299 {
1300         return false;
1301 }
1302
1303 static bool vfswrap_is_offline(struct vfs_handle_struct *handle, const char *path, SMB_STRUCT_STAT *sbuf)
1304 {
1305         if (ISDOT(path) || ISDOTDOT(path)) {
1306                 return false;
1307         }
1308
1309         if (!lp_dmapi_support(SNUM(handle->conn)) || !dmapi_have_session()) {
1310 #if defined(ENOTSUP)
1311                 errno = ENOTSUP;
1312 #endif
1313                 return false;
1314         }
1315
1316         return (dmapi_file_flags(path) & FILE_ATTRIBUTE_OFFLINE) != 0;
1317 }
1318
1319 static int vfswrap_set_offline(struct vfs_handle_struct *handle, const char *path)
1320 {
1321         /* We don't know how to set offline bit by default, needs to be overriden in the vfs modules */
1322 #if defined(ENOTSUP)
1323         errno = ENOTSUP;
1324 #endif
1325         return -1;
1326 }
1327
1328 static vfs_op_tuple vfs_default_ops[] = {
1329
1330         /* Disk operations */
1331
1332         {SMB_VFS_OP(vfswrap_connect),   SMB_VFS_OP_CONNECT,
1333          SMB_VFS_LAYER_OPAQUE},
1334         {SMB_VFS_OP(vfswrap_disconnect),        SMB_VFS_OP_DISCONNECT,
1335          SMB_VFS_LAYER_OPAQUE},
1336         {SMB_VFS_OP(vfswrap_disk_free), SMB_VFS_OP_DISK_FREE,
1337          SMB_VFS_LAYER_OPAQUE},
1338         {SMB_VFS_OP(vfswrap_get_quota), SMB_VFS_OP_GET_QUOTA,
1339          SMB_VFS_LAYER_OPAQUE},
1340         {SMB_VFS_OP(vfswrap_set_quota), SMB_VFS_OP_SET_QUOTA,
1341          SMB_VFS_LAYER_OPAQUE},
1342         {SMB_VFS_OP(vfswrap_get_shadow_copy_data), SMB_VFS_OP_GET_SHADOW_COPY_DATA,
1343          SMB_VFS_LAYER_OPAQUE},
1344         {SMB_VFS_OP(vfswrap_statvfs),   SMB_VFS_OP_STATVFS,
1345          SMB_VFS_LAYER_OPAQUE},
1346         {SMB_VFS_OP(vfswrap_fs_capabilities), SMB_VFS_OP_FS_CAPABILITIES,
1347          SMB_VFS_LAYER_OPAQUE},
1348
1349         /* Directory operations */
1350
1351         {SMB_VFS_OP(vfswrap_opendir),   SMB_VFS_OP_OPENDIR,
1352          SMB_VFS_LAYER_OPAQUE},
1353         {SMB_VFS_OP(vfswrap_readdir),   SMB_VFS_OP_READDIR,
1354          SMB_VFS_LAYER_OPAQUE},
1355         {SMB_VFS_OP(vfswrap_seekdir),   SMB_VFS_OP_SEEKDIR,
1356          SMB_VFS_LAYER_OPAQUE},
1357         {SMB_VFS_OP(vfswrap_telldir),   SMB_VFS_OP_TELLDIR,
1358          SMB_VFS_LAYER_OPAQUE},
1359         {SMB_VFS_OP(vfswrap_rewinddir), SMB_VFS_OP_REWINDDIR,
1360          SMB_VFS_LAYER_OPAQUE},
1361         {SMB_VFS_OP(vfswrap_mkdir),     SMB_VFS_OP_MKDIR,
1362          SMB_VFS_LAYER_OPAQUE},
1363         {SMB_VFS_OP(vfswrap_rmdir),     SMB_VFS_OP_RMDIR,
1364          SMB_VFS_LAYER_OPAQUE},
1365         {SMB_VFS_OP(vfswrap_closedir),  SMB_VFS_OP_CLOSEDIR,
1366          SMB_VFS_LAYER_OPAQUE},
1367
1368         /* File operations */
1369
1370         {SMB_VFS_OP(vfswrap_open),      SMB_VFS_OP_OPEN,
1371          SMB_VFS_LAYER_OPAQUE},
1372         {SMB_VFS_OP(vfswrap_close),     SMB_VFS_OP_CLOSE,
1373          SMB_VFS_LAYER_OPAQUE},
1374         {SMB_VFS_OP(vfswrap_read),      SMB_VFS_OP_READ,
1375          SMB_VFS_LAYER_OPAQUE},
1376         {SMB_VFS_OP(vfswrap_pread),     SMB_VFS_OP_PREAD,
1377          SMB_VFS_LAYER_OPAQUE},
1378         {SMB_VFS_OP(vfswrap_write),     SMB_VFS_OP_WRITE,
1379          SMB_VFS_LAYER_OPAQUE},
1380         {SMB_VFS_OP(vfswrap_pwrite),    SMB_VFS_OP_PWRITE,
1381          SMB_VFS_LAYER_OPAQUE},
1382         {SMB_VFS_OP(vfswrap_lseek),     SMB_VFS_OP_LSEEK,
1383          SMB_VFS_LAYER_OPAQUE},
1384         {SMB_VFS_OP(vfswrap_sendfile),  SMB_VFS_OP_SENDFILE,
1385          SMB_VFS_LAYER_OPAQUE},
1386         {SMB_VFS_OP(vfswrap_recvfile),  SMB_VFS_OP_RECVFILE,
1387          SMB_VFS_LAYER_OPAQUE},
1388         {SMB_VFS_OP(vfswrap_rename),    SMB_VFS_OP_RENAME,
1389          SMB_VFS_LAYER_OPAQUE},
1390         {SMB_VFS_OP(vfswrap_fsync),     SMB_VFS_OP_FSYNC,
1391          SMB_VFS_LAYER_OPAQUE},
1392         {SMB_VFS_OP(vfswrap_stat),      SMB_VFS_OP_STAT,
1393          SMB_VFS_LAYER_OPAQUE},
1394         {SMB_VFS_OP(vfswrap_fstat),     SMB_VFS_OP_FSTAT,
1395          SMB_VFS_LAYER_OPAQUE},
1396         {SMB_VFS_OP(vfswrap_lstat),     SMB_VFS_OP_LSTAT,
1397          SMB_VFS_LAYER_OPAQUE},
1398         {SMB_VFS_OP(vfswrap_unlink),    SMB_VFS_OP_UNLINK,
1399          SMB_VFS_LAYER_OPAQUE},
1400         {SMB_VFS_OP(vfswrap_chmod),     SMB_VFS_OP_CHMOD,
1401          SMB_VFS_LAYER_OPAQUE},
1402         {SMB_VFS_OP(vfswrap_fchmod),    SMB_VFS_OP_FCHMOD,
1403          SMB_VFS_LAYER_OPAQUE},
1404         {SMB_VFS_OP(vfswrap_chown),     SMB_VFS_OP_CHOWN,
1405          SMB_VFS_LAYER_OPAQUE},
1406         {SMB_VFS_OP(vfswrap_fchown),    SMB_VFS_OP_FCHOWN,
1407          SMB_VFS_LAYER_OPAQUE},
1408         {SMB_VFS_OP(vfswrap_lchown),    SMB_VFS_OP_LCHOWN,
1409          SMB_VFS_LAYER_OPAQUE},
1410         {SMB_VFS_OP(vfswrap_chdir),     SMB_VFS_OP_CHDIR,
1411          SMB_VFS_LAYER_OPAQUE},
1412         {SMB_VFS_OP(vfswrap_getwd),     SMB_VFS_OP_GETWD,
1413          SMB_VFS_LAYER_OPAQUE},
1414         {SMB_VFS_OP(vfswrap_ntimes),    SMB_VFS_OP_NTIMES,
1415          SMB_VFS_LAYER_OPAQUE},
1416         {SMB_VFS_OP(vfswrap_ftruncate), SMB_VFS_OP_FTRUNCATE,
1417          SMB_VFS_LAYER_OPAQUE},
1418         {SMB_VFS_OP(vfswrap_lock),      SMB_VFS_OP_LOCK,
1419          SMB_VFS_LAYER_OPAQUE},
1420         {SMB_VFS_OP(vfswrap_kernel_flock),      SMB_VFS_OP_KERNEL_FLOCK,
1421          SMB_VFS_LAYER_OPAQUE},
1422         {SMB_VFS_OP(vfswrap_linux_setlease),    SMB_VFS_OP_LINUX_SETLEASE,
1423          SMB_VFS_LAYER_OPAQUE},
1424         {SMB_VFS_OP(vfswrap_getlock),   SMB_VFS_OP_GETLOCK,
1425          SMB_VFS_LAYER_OPAQUE},
1426         {SMB_VFS_OP(vfswrap_symlink),   SMB_VFS_OP_SYMLINK,
1427          SMB_VFS_LAYER_OPAQUE},
1428         {SMB_VFS_OP(vfswrap_readlink),  SMB_VFS_OP_READLINK,
1429          SMB_VFS_LAYER_OPAQUE},
1430         {SMB_VFS_OP(vfswrap_link),      SMB_VFS_OP_LINK,
1431          SMB_VFS_LAYER_OPAQUE},
1432         {SMB_VFS_OP(vfswrap_mknod),     SMB_VFS_OP_MKNOD,
1433          SMB_VFS_LAYER_OPAQUE},
1434         {SMB_VFS_OP(vfswrap_realpath),  SMB_VFS_OP_REALPATH,
1435          SMB_VFS_LAYER_OPAQUE},
1436         {SMB_VFS_OP(vfswrap_notify_watch),      SMB_VFS_OP_NOTIFY_WATCH,
1437          SMB_VFS_LAYER_OPAQUE},
1438         {SMB_VFS_OP(vfswrap_chflags),   SMB_VFS_OP_CHFLAGS,
1439          SMB_VFS_LAYER_OPAQUE},
1440         {SMB_VFS_OP(vfswrap_file_id_create),    SMB_VFS_OP_FILE_ID_CREATE,
1441          SMB_VFS_LAYER_OPAQUE},
1442         {SMB_VFS_OP(vfswrap_streaminfo),        SMB_VFS_OP_STREAMINFO,
1443          SMB_VFS_LAYER_OPAQUE},
1444
1445         /* NT ACL operations. */
1446
1447         {SMB_VFS_OP(vfswrap_fget_nt_acl),       SMB_VFS_OP_FGET_NT_ACL,
1448          SMB_VFS_LAYER_OPAQUE},
1449         {SMB_VFS_OP(vfswrap_get_nt_acl),        SMB_VFS_OP_GET_NT_ACL,
1450          SMB_VFS_LAYER_OPAQUE},
1451         {SMB_VFS_OP(vfswrap_fset_nt_acl),       SMB_VFS_OP_FSET_NT_ACL,
1452          SMB_VFS_LAYER_OPAQUE},
1453         {SMB_VFS_OP(vfswrap_set_nt_acl),        SMB_VFS_OP_SET_NT_ACL,
1454          SMB_VFS_LAYER_OPAQUE},
1455
1456         /* POSIX ACL operations. */
1457
1458         {SMB_VFS_OP(vfswrap_chmod_acl), SMB_VFS_OP_CHMOD_ACL,
1459          SMB_VFS_LAYER_OPAQUE},
1460         {SMB_VFS_OP(vfswrap_fchmod_acl),        SMB_VFS_OP_FCHMOD_ACL,
1461          SMB_VFS_LAYER_OPAQUE},
1462         {SMB_VFS_OP(vfswrap_sys_acl_get_entry), SMB_VFS_OP_SYS_ACL_GET_ENTRY,
1463          SMB_VFS_LAYER_OPAQUE},
1464         {SMB_VFS_OP(vfswrap_sys_acl_get_tag_type),      SMB_VFS_OP_SYS_ACL_GET_TAG_TYPE,
1465          SMB_VFS_LAYER_OPAQUE},
1466         {SMB_VFS_OP(vfswrap_sys_acl_get_permset),       SMB_VFS_OP_SYS_ACL_GET_PERMSET,
1467          SMB_VFS_LAYER_OPAQUE},
1468         {SMB_VFS_OP(vfswrap_sys_acl_get_qualifier),     SMB_VFS_OP_SYS_ACL_GET_QUALIFIER,
1469          SMB_VFS_LAYER_OPAQUE},
1470         {SMB_VFS_OP(vfswrap_sys_acl_get_file),  SMB_VFS_OP_SYS_ACL_GET_FILE,
1471          SMB_VFS_LAYER_OPAQUE},
1472         {SMB_VFS_OP(vfswrap_sys_acl_get_fd),    SMB_VFS_OP_SYS_ACL_GET_FD,
1473          SMB_VFS_LAYER_OPAQUE},
1474         {SMB_VFS_OP(vfswrap_sys_acl_clear_perms),       SMB_VFS_OP_SYS_ACL_CLEAR_PERMS,
1475          SMB_VFS_LAYER_OPAQUE},
1476         {SMB_VFS_OP(vfswrap_sys_acl_add_perm),  SMB_VFS_OP_SYS_ACL_ADD_PERM,
1477          SMB_VFS_LAYER_OPAQUE},
1478         {SMB_VFS_OP(vfswrap_sys_acl_to_text),   SMB_VFS_OP_SYS_ACL_TO_TEXT,
1479          SMB_VFS_LAYER_OPAQUE},
1480         {SMB_VFS_OP(vfswrap_sys_acl_init),      SMB_VFS_OP_SYS_ACL_INIT,
1481          SMB_VFS_LAYER_OPAQUE},
1482         {SMB_VFS_OP(vfswrap_sys_acl_create_entry),      SMB_VFS_OP_SYS_ACL_CREATE_ENTRY,
1483          SMB_VFS_LAYER_OPAQUE},
1484         {SMB_VFS_OP(vfswrap_sys_acl_set_tag_type),      SMB_VFS_OP_SYS_ACL_SET_TAG_TYPE,
1485          SMB_VFS_LAYER_OPAQUE},
1486         {SMB_VFS_OP(vfswrap_sys_acl_set_qualifier),     SMB_VFS_OP_SYS_ACL_SET_QUALIFIER,
1487          SMB_VFS_LAYER_OPAQUE},
1488         {SMB_VFS_OP(vfswrap_sys_acl_set_permset),       SMB_VFS_OP_SYS_ACL_SET_PERMSET,
1489          SMB_VFS_LAYER_OPAQUE},
1490         {SMB_VFS_OP(vfswrap_sys_acl_valid),     SMB_VFS_OP_SYS_ACL_VALID,
1491          SMB_VFS_LAYER_OPAQUE},
1492         {SMB_VFS_OP(vfswrap_sys_acl_set_file),  SMB_VFS_OP_SYS_ACL_SET_FILE,
1493          SMB_VFS_LAYER_OPAQUE},
1494         {SMB_VFS_OP(vfswrap_sys_acl_set_fd),    SMB_VFS_OP_SYS_ACL_SET_FD,
1495          SMB_VFS_LAYER_OPAQUE},
1496         {SMB_VFS_OP(vfswrap_sys_acl_delete_def_file),   SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE,
1497          SMB_VFS_LAYER_OPAQUE},
1498         {SMB_VFS_OP(vfswrap_sys_acl_get_perm),  SMB_VFS_OP_SYS_ACL_GET_PERM,
1499          SMB_VFS_LAYER_OPAQUE},
1500         {SMB_VFS_OP(vfswrap_sys_acl_free_text), SMB_VFS_OP_SYS_ACL_FREE_TEXT,
1501          SMB_VFS_LAYER_OPAQUE},
1502         {SMB_VFS_OP(vfswrap_sys_acl_free_acl),  SMB_VFS_OP_SYS_ACL_FREE_ACL,
1503          SMB_VFS_LAYER_OPAQUE},
1504         {SMB_VFS_OP(vfswrap_sys_acl_free_qualifier),    SMB_VFS_OP_SYS_ACL_FREE_QUALIFIER,
1505          SMB_VFS_LAYER_OPAQUE},
1506
1507         /* EA operations. */
1508
1509         {SMB_VFS_OP(vfswrap_getxattr),  SMB_VFS_OP_GETXATTR,
1510          SMB_VFS_LAYER_OPAQUE},
1511         {SMB_VFS_OP(vfswrap_lgetxattr), SMB_VFS_OP_LGETXATTR,
1512          SMB_VFS_LAYER_OPAQUE},
1513         {SMB_VFS_OP(vfswrap_fgetxattr), SMB_VFS_OP_FGETXATTR,
1514          SMB_VFS_LAYER_OPAQUE},
1515         {SMB_VFS_OP(vfswrap_listxattr), SMB_VFS_OP_LISTXATTR,
1516          SMB_VFS_LAYER_OPAQUE},
1517         {SMB_VFS_OP(vfswrap_llistxattr),        SMB_VFS_OP_LLISTXATTR,
1518          SMB_VFS_LAYER_OPAQUE},
1519         {SMB_VFS_OP(vfswrap_flistxattr),        SMB_VFS_OP_FLISTXATTR,
1520          SMB_VFS_LAYER_OPAQUE},
1521         {SMB_VFS_OP(vfswrap_removexattr),       SMB_VFS_OP_REMOVEXATTR,
1522          SMB_VFS_LAYER_OPAQUE},
1523         {SMB_VFS_OP(vfswrap_lremovexattr),      SMB_VFS_OP_LREMOVEXATTR,
1524          SMB_VFS_LAYER_OPAQUE},
1525         {SMB_VFS_OP(vfswrap_fremovexattr),      SMB_VFS_OP_FREMOVEXATTR,
1526          SMB_VFS_LAYER_OPAQUE},
1527         {SMB_VFS_OP(vfswrap_setxattr),  SMB_VFS_OP_SETXATTR,
1528          SMB_VFS_LAYER_OPAQUE},
1529         {SMB_VFS_OP(vfswrap_lsetxattr), SMB_VFS_OP_LSETXATTR,
1530          SMB_VFS_LAYER_OPAQUE},
1531         {SMB_VFS_OP(vfswrap_fsetxattr), SMB_VFS_OP_FSETXATTR,
1532          SMB_VFS_LAYER_OPAQUE},
1533
1534         {SMB_VFS_OP(vfswrap_aio_read),  SMB_VFS_OP_AIO_READ,
1535          SMB_VFS_LAYER_OPAQUE},
1536         {SMB_VFS_OP(vfswrap_aio_write), SMB_VFS_OP_AIO_WRITE,
1537          SMB_VFS_LAYER_OPAQUE},
1538         {SMB_VFS_OP(vfswrap_aio_return),        SMB_VFS_OP_AIO_RETURN,
1539          SMB_VFS_LAYER_OPAQUE},
1540         {SMB_VFS_OP(vfswrap_aio_cancel), SMB_VFS_OP_AIO_CANCEL,
1541          SMB_VFS_LAYER_OPAQUE},
1542         {SMB_VFS_OP(vfswrap_aio_error), SMB_VFS_OP_AIO_ERROR,
1543          SMB_VFS_LAYER_OPAQUE},
1544         {SMB_VFS_OP(vfswrap_aio_fsync), SMB_VFS_OP_AIO_FSYNC,
1545          SMB_VFS_LAYER_OPAQUE},
1546         {SMB_VFS_OP(vfswrap_aio_suspend),SMB_VFS_OP_AIO_SUSPEND,
1547          SMB_VFS_LAYER_OPAQUE},
1548
1549         {SMB_VFS_OP(vfswrap_aio_force), SMB_VFS_OP_AIO_FORCE,
1550          SMB_VFS_LAYER_OPAQUE},
1551
1552         {SMB_VFS_OP(vfswrap_is_offline),SMB_VFS_OP_IS_OFFLINE,
1553          SMB_VFS_LAYER_OPAQUE},
1554         {SMB_VFS_OP(vfswrap_set_offline),SMB_VFS_OP_SET_OFFLINE,
1555          SMB_VFS_LAYER_OPAQUE},
1556
1557         /* Finish VFS operations definition */
1558
1559         {SMB_VFS_OP(NULL),              SMB_VFS_OP_NOOP,
1560          SMB_VFS_LAYER_NOOP}
1561 };
1562
1563 NTSTATUS vfs_default_init(void);
1564 NTSTATUS vfs_default_init(void)
1565 {
1566         unsigned int needed = SMB_VFS_OP_LAST + 1; /* convert from index to count */
1567
1568         if (ARRAY_SIZE(vfs_default_ops) != needed) {
1569                 DEBUG(0, ("%s: %u ops registered, but %u ops are required\n",
1570                         DEFAULT_VFS_MODULE_NAME, (unsigned int)ARRAY_SIZE(vfs_default_ops), needed));
1571                 smb_panic("operation(s) missing from default VFS module");
1572         }
1573
1574         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
1575                                 DEFAULT_VFS_MODULE_NAME, vfs_default_ops);
1576 }