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
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  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 /* Directory operations */
  94
  95 static SMB_STRUCT_DIR *vfswrap_opendir(vfs_handle_struct *handle,  const char *fname, const char *mask, uint32 attr)
  96 {
  97         SMB_STRUCT_DIR *result;
  98
  99         START_PROFILE(syscall_opendir);
 100         result = sys_opendir(fname);
 101         END_PROFILE(syscall_opendir);
 102         return result;
 103 }
 104
 105 static SMB_STRUCT_DIRENT *vfswrap_readdir(vfs_handle_struct *handle,  SMB_STRUCT_DIR *dirp)
 106 {
 107         SMB_STRUCT_DIRENT *result;
 108
 109         START_PROFILE(syscall_readdir);
 110         result = sys_readdir(dirp);
 111         END_PROFILE(syscall_readdir);
 112         return result;
 113 }
 114
 115 static void vfswrap_seekdir(vfs_handle_struct *handle,  SMB_STRUCT_DIR *dirp, long offset)
 116 {
 117         START_PROFILE(syscall_seekdir);
 118         sys_seekdir(dirp, offset);
 119         END_PROFILE(syscall_seekdir);
 120 }
 121
 122 static long vfswrap_telldir(vfs_handle_struct *handle,  SMB_STRUCT_DIR *dirp)
 123 {
 124         long result;
 125         START_PROFILE(syscall_telldir);
 126         result = sys_telldir(dirp);
 127         END_PROFILE(syscall_telldir);
 128         return result;
 129 }
 130
 131 static void vfswrap_rewinddir(vfs_handle_struct *handle,  SMB_STRUCT_DIR *dirp)
 132 {
 133         START_PROFILE(syscall_rewinddir);
 134         sys_rewinddir(dirp);
 135         END_PROFILE(syscall_rewinddir);
 136 }
 137
 138 static int vfswrap_mkdir(vfs_handle_struct *handle,  const char *path, mode_t mode)
 139 {
 140         int result;
 141         BOOL has_dacl = False;
 142
 143         START_PROFILE(syscall_mkdir);
 144
 145         if (lp_inherit_acls(SNUM(handle->conn)) && (has_dacl = directory_has_default_acl(handle->conn, parent_dirname(path))))
 146                 mode = 0777;
 147
 148         result = mkdir(path, mode);
 149
 150         if (result == 0 && !has_dacl) {
 151                 /*
 152                  * We need to do this as the default behavior of POSIX ACLs
 153                  * is to set the mask to be the requested group permission
 154                  * bits, not the group permission bits to be the requested
 155                  * group permission bits. This is not what we want, as it will
 156                  * mess up any inherited ACL bits that were set. JRA.
 157                  */
 158                 int saved_errno = errno; /* We may get ENOSYS */
 159                 if ((SMB_VFS_CHMOD_ACL(handle->conn, path, mode) == -1) && (errno == ENOSYS))
 160                         errno = saved_errno;
 161         }
 162
 163         END_PROFILE(syscall_mkdir);
 164         return result;
 165 }
 166
 167 static int vfswrap_rmdir(vfs_handle_struct *handle,  const char *path)
 168 {
 169         int result;
 170
 171         START_PROFILE(syscall_rmdir);
 172         result = rmdir(path);
 173         END_PROFILE(syscall_rmdir);
 174         return result;
 175 }
 176
 177 static int vfswrap_closedir(vfs_handle_struct *handle,  SMB_STRUCT_DIR *dirp)
 178 {
 179         int result;
 180
 181         START_PROFILE(syscall_closedir);
 182         result = sys_closedir(dirp);
 183         END_PROFILE(syscall_closedir);
 184         return result;
 185 }
 186
 187 /* File operations */
 188
 189 static int vfswrap_open(vfs_handle_struct *handle,  const char *fname,
 190         files_struct *fsp, int flags, mode_t mode)
 191 {
 192         int result;
 193
 194         START_PROFILE(syscall_open);
 195         result = sys_open(fname, flags, mode);
 196         END_PROFILE(syscall_open);
 197         return result;
 198 }
 199
 200 static int vfswrap_close(vfs_handle_struct *handle, files_struct *fsp, int fd)
 201 {
 202         int result;
 203
 204         START_PROFILE(syscall_close);
 205
 206         result = close(fd);
 207         END_PROFILE(syscall_close);
 208         return result;
 209 }
 210
 211 static ssize_t vfswrap_read(vfs_handle_struct *handle, files_struct *fsp, int fd, void *data, size_t n)
 212 {
 213         ssize_t result;
 214
 215         START_PROFILE_BYTES(syscall_read, n);
 216         result = sys_read(fd, data, n);
 217         END_PROFILE(syscall_read);
 218         return result;
 219 }
 220
 221 static ssize_t vfswrap_pread(vfs_handle_struct *handle, files_struct *fsp, int fd, void *data,
 222                         size_t n, SMB_OFF_T offset)
 223 {
 224         ssize_t result;
 225
 226 #if defined(HAVE_PREAD) || defined(HAVE_PREAD64)
 227         START_PROFILE_BYTES(syscall_pread, n);
 228         result = sys_pread(fd, data, n, offset);
 229         END_PROFILE(syscall_pread);
 230
 231         if (result == -1 && errno == ESPIPE) {
 232                 /* Maintain the fiction that pipes can be seeked (sought?) on. */
 233                 result = SMB_VFS_READ(fsp, fd, data, n);
 234                 fsp->fh->pos = 0;
 235         }
 236
 237 #else /* HAVE_PREAD */
 238         SMB_OFF_T   curr;
 239         int lerrno;
 240
 241         curr = SMB_VFS_LSEEK(fsp, fd, 0, SEEK_CUR);
 242         if (curr == -1 && errno == ESPIPE) {
 243                 /* Maintain the fiction that pipes can be seeked (sought?) on. */
 244                 result = SMB_VFS_READ(fsp, fd, data, n);
 245                 fsp->fh->pos = 0;
 246                 return result;
 247         }
 248
 249         if (SMB_VFS_LSEEK(fsp, fd, offset, SEEK_SET) == -1) {
 250                 return -1;
 251         }
 252
 253         errno = 0;
 254         result = SMB_VFS_READ(fsp, fd, data, n);
 255         lerrno = errno;
 256
 257         SMB_VFS_LSEEK(fsp, fd, curr, SEEK_SET);
 258         errno = lerrno;
 259
 260 #endif /* HAVE_PREAD */
 261
 262         return result;
 263 }
 264
 265 static ssize_t vfswrap_write(vfs_handle_struct *handle, files_struct *fsp, int fd, const void *data, size_t n)
 266 {
 267         ssize_t result;
 268
 269         START_PROFILE_BYTES(syscall_write, n);
 270         result = sys_write(fd, data, n);
 271         END_PROFILE(syscall_write);
 272         return result;
 273 }
 274
 275 static ssize_t vfswrap_pwrite(vfs_handle_struct *handle, files_struct *fsp, int fd, const void *data,
 276                         size_t n, SMB_OFF_T offset)
 277 {
 278         ssize_t result;
 279
 280 #if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
 281         START_PROFILE_BYTES(syscall_pwrite, n);
 282         result = sys_pwrite(fd, data, n, offset);
 283         END_PROFILE(syscall_pwrite);
 284
 285         if (result == -1 && errno == ESPIPE) {
 286                 /* Maintain the fiction that pipes can be sought on. */
 287                 result = SMB_VFS_WRITE(fsp, fd, data, n);
 288         }
 289
 290 #else /* HAVE_PWRITE */
 291         SMB_OFF_T   curr;
 292         int         lerrno;
 293
 294         curr = SMB_VFS_LSEEK(fsp, fd, 0, SEEK_CUR);
 295         if (curr == -1) {
 296                 return -1;
 297         }
 298
 299         if (SMB_VFS_LSEEK(fsp, fd, offset, SEEK_SET) == -1) {
 300                 return -1;
 301         }
 302
 303         result = SMB_VFS_WRITE(fsp, fd, data, n);
 304         lerrno = errno;
 305
 306         SMB_VFS_LSEEK(fsp, fd, curr, SEEK_SET);
 307         errno = lerrno;
 308
 309 #endif /* HAVE_PWRITE */
 310
 311         return result;
 312 }
 313
 314 static SMB_OFF_T vfswrap_lseek(vfs_handle_struct *handle, files_struct *fsp, int filedes, SMB_OFF_T offset, int whence)
 315 {
 316         SMB_OFF_T result = 0;
 317
 318         START_PROFILE(syscall_lseek);
 319
 320         /* Cope with 'stat' file opens. */
 321         if (filedes != -1)
 322                 result = sys_lseek(filedes, offset, whence);
 323
 324         /*
 325          * We want to maintain the fiction that we can seek
 326          * on a fifo for file system purposes. This allows
 327          * people to set up UNIX fifo's that feed data to Windows
 328          * applications. JRA.
 329          */
 330
 331         if((result == -1) && (errno == ESPIPE)) {
 332                 result = 0;
 333                 errno = 0;
 334         }
 335
 336         END_PROFILE(syscall_lseek);
 337         return result;
 338 }
 339
 340 static ssize_t vfswrap_sendfile(vfs_handle_struct *handle, int tofd, files_struct *fsp, int fromfd, const DATA_BLOB *hdr,
 341                         SMB_OFF_T offset, size_t n)
 342 {
 343         ssize_t result;
 344
 345         START_PROFILE_BYTES(syscall_sendfile, n);
 346         result = sys_sendfile(tofd, fromfd, hdr, offset, n);
 347         END_PROFILE(syscall_sendfile);
 348         return result;
 349 }
 350
 351 /*********************************************************
 352  For rename across filesystems Patch from Warren Birnbaum
 353  <warrenb@hpcvscdp.cv.hp.com>
 354 **********************************************************/
 355
 356 static int copy_reg(const char *source, const char *dest)
 357 {
 358         SMB_STRUCT_STAT source_stats;
 359         int saved_errno;
 360         int ifd = -1;
 361         int ofd = -1;
 362
 363         if (sys_lstat (source, &source_stats) == -1)
 364                 return -1;
 365
 366         if (!S_ISREG (source_stats.st_mode))
 367                 return -1;
 368
 369         if((ifd = sys_open (source, O_RDONLY, 0)) < 0)
 370                 return -1;
 371
 372         if (unlink (dest) && errno != ENOENT)
 373                 return -1;
 374
 375 #ifdef O_NOFOLLOW
 376         if((ofd = sys_open (dest, O_WRONLY | O_CREAT | O_TRUNC | O_NOFOLLOW, 0600)) < 0 )
 377 #else
 378         if((ofd = sys_open (dest, O_WRONLY | O_CREAT | O_TRUNC , 0600)) < 0 )
 379 #endif
 380                 goto err;
 381
 382         if (transfer_file(ifd, ofd, (size_t)-1) == -1)
 383                 goto err;
 384
 385         /*
 386          * Try to preserve ownership.  For non-root it might fail, but that's ok.
 387          * But root probably wants to know, e.g. if NFS disallows it.
 388          */
 389
 390 #ifdef HAVE_FCHOWN
 391         if ((fchown(ofd, source_stats.st_uid, source_stats.st_gid) == -1) && (errno != EPERM))
 392 #else
 393         if ((chown(dest, source_stats.st_uid, source_stats.st_gid) == -1) && (errno != EPERM))
 394 #endif
 395                 goto err;
 396
 397         /*
 398          * fchown turns off set[ug]id bits for non-root,
 399          * so do the chmod last.
 400          */
 401
 402 #if defined(HAVE_FCHMOD)
 403         if (fchmod (ofd, source_stats.st_mode & 07777))
 404 #else
 405         if (chmod (dest, source_stats.st_mode & 07777))
 406 #endif
 407                 goto err;
 408
 409         if (close (ifd) == -1)
 410                 goto err;
 411
 412         if (close (ofd) == -1)
 413                 return -1;
 414
 415         /* Try to copy the old file's modtime and access time.  */
 416         {
 417                 struct utimbuf tv;
 418
 419                 tv.actime = source_stats.st_atime;
 420                 tv.modtime = source_stats.st_mtime;
 421                 utime(dest, &tv);
 422         }
 423
 424         if (unlink (source) == -1)
 425                 return -1;
 426
 427         return 0;
 428
 429   err:
 430
 431         saved_errno = errno;
 432         if (ifd != -1)
 433                 close(ifd);
 434         if (ofd != -1)
 435                 close(ofd);
 436         errno = saved_errno;
 437         return -1;
 438 }
 439
 440 static int vfswrap_rename(vfs_handle_struct *handle,  const char *oldname, const char *newname)
 441 {
 442         int result;
 443
 444         START_PROFILE(syscall_rename);
 445         result = rename(oldname, newname);
 446         if (errno == EXDEV) {
 447                 /* Rename across filesystems needed. */
 448                 result = copy_reg(oldname, newname);
 449         }
 450
 451         END_PROFILE(syscall_rename);
 452         return result;
 453 }
 454
 455 static int vfswrap_fsync(vfs_handle_struct *handle, files_struct *fsp, int fd)
 456 {
 457 #ifdef HAVE_FSYNC
 458         int result;
 459
 460         START_PROFILE(syscall_fsync);
 461         result = fsync(fd);
 462         END_PROFILE(syscall_fsync);
 463         return result;
 464 #else
 465         return 0;
 466 #endif
 467 }
 468
 469 static int vfswrap_stat(vfs_handle_struct *handle,  const char *fname, SMB_STRUCT_STAT *sbuf)
 470 {
 471         int result;
 472
 473         START_PROFILE(syscall_stat);
 474         result = sys_stat(fname, sbuf);
 475         END_PROFILE(syscall_stat);
 476         return result;
 477 }
 478
 479 static int vfswrap_fstat(vfs_handle_struct *handle, files_struct *fsp, int fd, SMB_STRUCT_STAT *sbuf)
 480 {
 481         int result;
 482
 483         START_PROFILE(syscall_fstat);
 484         result = sys_fstat(fd, sbuf);
 485         END_PROFILE(syscall_fstat);
 486         return result;
 487 }
 488
 489 int vfswrap_lstat(vfs_handle_struct *handle,  const char *path, SMB_STRUCT_STAT *sbuf)
 490 {
 491         int result;
 492
 493         START_PROFILE(syscall_lstat);
 494         result = sys_lstat(path, sbuf);
 495         END_PROFILE(syscall_lstat);
 496         return result;
 497 }
 498
 499 static int vfswrap_unlink(vfs_handle_struct *handle,  const char *path)
 500 {
 501         int result;
 502
 503         START_PROFILE(syscall_unlink);
 504         result = unlink(path);
 505         END_PROFILE(syscall_unlink);
 506         return result;
 507 }
 508
 509 static int vfswrap_chmod(vfs_handle_struct *handle,  const char *path, mode_t mode)
 510 {
 511         int result;
 512
 513         START_PROFILE(syscall_chmod);
 514
 515         /*
 516          * We need to do this due to the fact that the default POSIX ACL
 517          * chmod modifies the ACL *mask* for the group owner, not the
 518          * group owner bits directly. JRA.
 519          */
 520
 521
 522         {
 523                 int saved_errno = errno; /* We might get ENOSYS */
 524                 if ((result = SMB_VFS_CHMOD_ACL(handle->conn, path, mode)) == 0) {
 525                         END_PROFILE(syscall_chmod);
 526                         return result;
 527                 }
 528                 /* Error - return the old errno. */
 529                 errno = saved_errno;
 530         }
 531
 532         result = chmod(path, mode);
 533         END_PROFILE(syscall_chmod);
 534         return result;
 535 }
 536
 537 static int vfswrap_fchmod(vfs_handle_struct *handle, files_struct *fsp, int fd, mode_t mode)
 538 {
 539         int result;
 540
 541         START_PROFILE(syscall_fchmod);
 542
 543         /*
 544          * We need to do this due to the fact that the default POSIX ACL
 545          * chmod modifies the ACL *mask* for the group owner, not the
 546          * group owner bits directly. JRA.
 547          */
 548
 549         {
 550                 int saved_errno = errno; /* We might get ENOSYS */
 551                 if ((result = SMB_VFS_FCHMOD_ACL(fsp, fd, mode)) == 0) {
 552                         END_PROFILE(syscall_fchmod);
 553                         return result;
 554                 }
 555                 /* Error - return the old errno. */
 556                 errno = saved_errno;
 557         }
 558
 559 #if defined(HAVE_FCHMOD)
 560         result = fchmod(fd, mode);
 561 #else
 562         result = -1;
 563         errno = ENOSYS;
 564 #endif
 565
 566         END_PROFILE(syscall_fchmod);
 567         return result;
 568 }
 569
 570 static int vfswrap_chown(vfs_handle_struct *handle,  const char *path, uid_t uid, gid_t gid)
 571 {
 572         int result;
 573
 574         START_PROFILE(syscall_chown);
 575         result = sys_chown(path, uid, gid);
 576         END_PROFILE(syscall_chown);
 577         return result;
 578 }
 579
 580 static int vfswrap_fchown(vfs_handle_struct *handle, files_struct *fsp, int fd, uid_t uid, gid_t gid)
 581 {
 582 #ifdef HAVE_FCHOWN
 583         int result;
 584
 585         START_PROFILE(syscall_fchown);
 586         result = fchown(fd, uid, gid);
 587         END_PROFILE(syscall_fchown);
 588         return result;
 589 #else
 590         errno = ENOSYS;
 591         return -1;
 592 #endif
 593 }
 594
 595 static int vfswrap_chdir(vfs_handle_struct *handle,  const char *path)
 596 {
 597         int result;
 598
 599         START_PROFILE(syscall_chdir);
 600         result = chdir(path);
 601         END_PROFILE(syscall_chdir);
 602         return result;
 603 }
 604
 605 static char *vfswrap_getwd(vfs_handle_struct *handle,  char *path)
 606 {
 607         char *result;
 608
 609         START_PROFILE(syscall_getwd);
 610         result = sys_getwd(path);
 611         END_PROFILE(syscall_getwd);
 612         return result;
 613 }
 614
 615 static int vfswrap_utime(vfs_handle_struct *handle,  const char *path, struct utimbuf *times)
 616 {
 617         int result;
 618
 619         START_PROFILE(syscall_utime);
 620         result = utime(path, times);
 621         END_PROFILE(syscall_utime);
 622         return result;
 623 }
 624
 625 /*********************************************************************
 626  A version of ftruncate that will write the space on disk if strict
 627  allocate is set.
 628 **********************************************************************/
 629
 630 static int strict_allocate_ftruncate(vfs_handle_struct *handle, files_struct *fsp, int fd, SMB_OFF_T len)
 631 {
 632         SMB_STRUCT_STAT st;
 633         SMB_OFF_T currpos = SMB_VFS_LSEEK(fsp, fd, 0, SEEK_CUR);
 634         unsigned char zero_space[4096];
 635         SMB_OFF_T space_to_write;
 636
 637         if (currpos == -1)
 638                 return -1;
 639
 640         if (SMB_VFS_FSTAT(fsp, fd, &st) == -1)
 641                 return -1;
 642
 643         space_to_write = len - st.st_size;
 644
 645 #ifdef S_ISFIFO
 646         if (S_ISFIFO(st.st_mode))
 647                 return 0;
 648 #endif
 649
 650         if (st.st_size == len)
 651                 return 0;
 652
 653         /* Shrink - just ftruncate. */
 654         if (st.st_size > len)
 655                 return sys_ftruncate(fd, len);
 656
 657         /* Write out the real space on disk. */
 658         if (SMB_VFS_LSEEK(fsp, fd, st.st_size, SEEK_SET) != st.st_size)
 659                 return -1;
 660
 661         space_to_write = len - st.st_size;
 662
 663         memset(zero_space, '\0', sizeof(zero_space));
 664         while ( space_to_write > 0) {
 665                 SMB_OFF_T retlen;
 666                 SMB_OFF_T current_len_to_write = MIN(sizeof(zero_space),space_to_write);
 667
 668                 retlen = SMB_VFS_WRITE(fsp,fsp->fh->fd,(char *)zero_space,current_len_to_write);
 669                 if (retlen <= 0)
 670                         return -1;
 671
 672                 space_to_write -= retlen;
 673         }
 674
 675         /* Seek to where we were */
 676         if (SMB_VFS_LSEEK(fsp, fd, currpos, SEEK_SET) != currpos)
 677                 return -1;
 678
 679         return 0;
 680 }
 681
 682 static int vfswrap_ftruncate(vfs_handle_struct *handle, files_struct *fsp, int fd, SMB_OFF_T len)
 683 {
 684         int result = -1;
 685         SMB_STRUCT_STAT st;
 686         char c = 0;
 687         SMB_OFF_T currpos;
 688
 689         START_PROFILE(syscall_ftruncate);
 690
 691         if (lp_strict_allocate(SNUM(fsp->conn))) {
 692                 result = strict_allocate_ftruncate(handle, fsp, fd, len);
 693                 END_PROFILE(syscall_ftruncate);
 694                 return result;
 695         }
 696
 697         /* we used to just check HAVE_FTRUNCATE_EXTEND and only use
 698            sys_ftruncate if the system supports it. Then I discovered that
 699            you can have some filesystems that support ftruncate
 700            expansion and some that don't! On Linux fat can't do
 701            ftruncate extend but ext2 can. */
 702
 703         result = sys_ftruncate(fd, len);
 704         if (result == 0)
 705                 goto done;
 706
 707         /* According to W. R. Stevens advanced UNIX prog. Pure 4.3 BSD cannot
 708            extend a file with ftruncate. Provide alternate implementation
 709            for this */
 710         currpos = SMB_VFS_LSEEK(fsp, fd, 0, SEEK_CUR);
 711         if (currpos == -1) {
 712                 goto done;
 713         }
 714
 715         /* Do an fstat to see if the file is longer than the requested
 716            size in which case the ftruncate above should have
 717            succeeded or shorter, in which case seek to len - 1 and
 718            write 1 byte of zero */
 719         if (SMB_VFS_FSTAT(fsp, fd, &st) == -1) {
 720                 goto done;
 721         }
 722
 723 #ifdef S_ISFIFO
 724         if (S_ISFIFO(st.st_mode)) {
 725                 result = 0;
 726                 goto done;
 727         }
 728 #endif
 729
 730         if (st.st_size == len) {
 731                 result = 0;
 732                 goto done;
 733         }
 734
 735         if (st.st_size > len) {
 736                 /* the sys_ftruncate should have worked */
 737                 goto done;
 738         }
 739
 740         if (SMB_VFS_LSEEK(fsp, fd, len-1, SEEK_SET) != len -1)
 741                 goto done;
 742
 743         if (SMB_VFS_WRITE(fsp, fd, &c, 1)!=1)
 744                 goto done;
 745
 746         /* Seek to where we were */
 747         if (SMB_VFS_LSEEK(fsp, fd, currpos, SEEK_SET) != currpos)
 748                 goto done;
 749         result = 0;
 750
 751   done:
 752
 753         END_PROFILE(syscall_ftruncate);
 754         return result;
 755 }
 756
 757 static BOOL vfswrap_lock(vfs_handle_struct *handle, files_struct *fsp, int fd, int op, SMB_OFF_T offset, SMB_OFF_T count, int type)
 758 {
 759         BOOL result;
 760
 761         START_PROFILE(syscall_fcntl_lock);
 762         result =  fcntl_lock(fd, op, offset, count, type);
 763         END_PROFILE(syscall_fcntl_lock);
 764         return result;
 765 }
 766
 767 static int vfswrap_kernel_flock(vfs_handle_struct *handle, files_struct *fsp, int fd,
 768                                 uint32 share_mode)
 769 {
 770         START_PROFILE(syscall_kernel_flock);
 771         kernel_flock(fd, share_mode);
 772         END_PROFILE(syscall_kernel_flock);
 773         return 0;
 774 }
 775
 776 static BOOL vfswrap_getlock(vfs_handle_struct *handle, files_struct *fsp, int fd, SMB_OFF_T *poffset, SMB_OFF_T *pcount, int *ptype, pid_t *ppid)
 777 {
 778         BOOL result;
 779
 780         START_PROFILE(syscall_fcntl_getlock);
 781         result =  fcntl_getlock(fd, poffset, pcount, ptype, ppid);
 782         END_PROFILE(syscall_fcntl_getlock);
 783         return result;
 784 }
 785
 786 static int vfswrap_linux_setlease(vfs_handle_struct *handle, files_struct *fsp, int fd,
 787                                 int leasetype)
 788 {
 789         int result;
 790
 791         START_PROFILE(syscall_linux_setlease);
 792
 793 #ifdef LINUX
 794         /* first set the signal handler */
 795         if(linux_set_lease_sighandler(fd) == -1)
 796                 return -1;
 797
 798         result = linux_setlease(fd, leasetype);
 799
 800 #endif
 801         END_PROFILE(syscall_linux_setlease);
 802         return result;
 803 }
 804
 805 static int vfswrap_symlink(vfs_handle_struct *handle,  const char *oldpath, const char *newpath)
 806 {
 807         int result;
 808
 809         START_PROFILE(syscall_symlink);
 810         result = sys_symlink(oldpath, newpath);
 811         END_PROFILE(syscall_symlink);
 812         return result;
 813 }
 814
 815 static int vfswrap_readlink(vfs_handle_struct *handle,  const char *path, char *buf, size_t bufsiz)
 816 {
 817         int result;
 818
 819         START_PROFILE(syscall_readlink);
 820         result = sys_readlink(path, buf, bufsiz);
 821         END_PROFILE(syscall_readlink);
 822         return result;
 823 }
 824
 825 static int vfswrap_link(vfs_handle_struct *handle,  const char *oldpath, const char *newpath)
 826 {
 827         int result;
 828
 829         START_PROFILE(syscall_link);
 830         result = sys_link(oldpath, newpath);
 831         END_PROFILE(syscall_link);
 832         return result;
 833 }
 834
 835 static int vfswrap_mknod(vfs_handle_struct *handle,  const char *pathname, mode_t mode, SMB_DEV_T dev)
 836 {
 837         int result;
 838
 839         START_PROFILE(syscall_mknod);
 840         result = sys_mknod(pathname, mode, dev);
 841         END_PROFILE(syscall_mknod);
 842         return result;
 843 }
 844
 845 static char *vfswrap_realpath(vfs_handle_struct *handle,  const char *path, char *resolved_path)
 846 {
 847         char *result;
 848
 849         START_PROFILE(syscall_realpath);
 850         result = sys_realpath(path, resolved_path);
 851         END_PROFILE(syscall_realpath);
 852         return result;
 853 }
 854
 855 static NTSTATUS vfswrap_notify_watch(vfs_handle_struct *vfs_handle,
 856                                      struct sys_notify_context *ctx,
 857                                      struct notify_entry *e,
 858                                      void (*callback)(struct sys_notify_context *ctx,
 859                                                       void *private_data,
 860                                                       struct notify_event *ev),
 861                                      void *private_data, void *handle)
 862 {
 863         /*
 864          * So far inotify is the only supported default notify mechanism. If
 865          * another platform like the the BSD's or a proprietary Unix comes
 866          * along and wants another default, we can play the same trick we
 867          * played with Posix ACLs.
 868          *
 869          * Until that is the case, hard-code inotify here.
 870          */
 871 #ifdef HAVE_INOTIFY
 872         if (lp_kernel_change_notify(ctx->conn->params)) {
 873                 return inotify_watch(ctx, e, callback, private_data, handle);
 874         }
 875 #endif
 876         /*
 877          * Do nothing, leave everything to notify_internal.c
 878          */
 879         return NT_STATUS_OK;
 880 }
 881
 882 static size_t vfswrap_fget_nt_acl(vfs_handle_struct *handle, files_struct *fsp, int fd, uint32 security_info, SEC_DESC **ppdesc)
 883 {
 884         size_t result;
 885
 886         START_PROFILE(fget_nt_acl);
 887         result = get_nt_acl(fsp, security_info, ppdesc);
 888         END_PROFILE(fget_nt_acl);
 889         return result;
 890 }
 891
 892 static size_t vfswrap_get_nt_acl(vfs_handle_struct *handle, files_struct *fsp, const char *name, uint32 security_info, SEC_DESC **ppdesc)
 893 {
 894         size_t result;
 895
 896         START_PROFILE(get_nt_acl);
 897         result = get_nt_acl(fsp, security_info, ppdesc);
 898         END_PROFILE(get_nt_acl);
 899         return result;
 900 }
 901
 902 static BOOL vfswrap_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, int fd, uint32 security_info_sent, SEC_DESC *psd)
 903 {
 904         BOOL result;
 905
 906         START_PROFILE(fset_nt_acl);
 907         result = set_nt_acl(fsp, security_info_sent, psd);
 908         END_PROFILE(fset_nt_acl);
 909         return result;
 910 }
 911
 912 static BOOL vfswrap_set_nt_acl(vfs_handle_struct *handle, files_struct *fsp, const char *name, uint32 security_info_sent, SEC_DESC *psd)
 913 {
 914         BOOL result;
 915
 916         START_PROFILE(set_nt_acl);
 917         result = set_nt_acl(fsp, security_info_sent, psd);
 918         END_PROFILE(set_nt_acl);
 919         return result;
 920 }
 921
 922 static int vfswrap_chmod_acl(vfs_handle_struct *handle,  const char *name, mode_t mode)
 923 {
 924 #ifdef HAVE_NO_ACL
 925         errno = ENOSYS;
 926         return -1;
 927 #else
 928         int result;
 929
 930         START_PROFILE(chmod_acl);
 931         result = chmod_acl(handle->conn, name, mode);
 932         END_PROFILE(chmod_acl);
 933         return result;
 934 #endif
 935 }
 936
 937 static int vfswrap_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, int fd, mode_t mode)
 938 {
 939 #ifdef HAVE_NO_ACL
 940         errno = ENOSYS;
 941         return -1;
 942 #else
 943         int result;
 944
 945         START_PROFILE(fchmod_acl);
 946         result = fchmod_acl(fsp, fd, mode);
 947         END_PROFILE(fchmod_acl);
 948         return result;
 949 #endif
 950 }
 951
 952 static int vfswrap_sys_acl_get_entry(vfs_handle_struct *handle,  SMB_ACL_T theacl, int entry_id, SMB_ACL_ENTRY_T *entry_p)
 953 {
 954         return sys_acl_get_entry(theacl, entry_id, entry_p);
 955 }
 956
 957 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)
 958 {
 959         return sys_acl_get_tag_type(entry_d, tag_type_p);
 960 }
 961
 962 static int vfswrap_sys_acl_get_permset(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry_d, SMB_ACL_PERMSET_T *permset_p)
 963 {
 964         return sys_acl_get_permset(entry_d, permset_p);
 965 }
 966
 967 static void * vfswrap_sys_acl_get_qualifier(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry_d)
 968 {
 969         return sys_acl_get_qualifier(entry_d);
 970 }
 971
 972 static SMB_ACL_T vfswrap_sys_acl_get_file(vfs_handle_struct *handle,  const char *path_p, SMB_ACL_TYPE_T type)
 973 {
 974         return sys_acl_get_file(handle, path_p, type);
 975 }
 976
 977 static SMB_ACL_T vfswrap_sys_acl_get_fd(vfs_handle_struct *handle, files_struct *fsp, int fd)
 978 {
 979         return sys_acl_get_fd(handle, fsp, fd);
 980 }
 981
 982 static int vfswrap_sys_acl_clear_perms(vfs_handle_struct *handle,  SMB_ACL_PERMSET_T permset)
 983 {
 984         return sys_acl_clear_perms(permset);
 985 }
 986
 987 static int vfswrap_sys_acl_add_perm(vfs_handle_struct *handle,  SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm)
 988 {
 989         return sys_acl_add_perm(permset, perm);
 990 }
 991
 992 static char * vfswrap_sys_acl_to_text(vfs_handle_struct *handle,  SMB_ACL_T theacl, ssize_t *plen)
 993 {
 994         return sys_acl_to_text(theacl, plen);
 995 }
 996
 997 static SMB_ACL_T vfswrap_sys_acl_init(vfs_handle_struct *handle,  int count)
 998 {
 999         return sys_acl_init(count);
1000 }
1001
1002 static int vfswrap_sys_acl_create_entry(vfs_handle_struct *handle,  SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry)
1003 {
1004         return sys_acl_create_entry(pacl, pentry);
1005 }
1006
1007 static int vfswrap_sys_acl_set_tag_type(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry, SMB_ACL_TAG_T tagtype)
1008 {
1009         return sys_acl_set_tag_type(entry, tagtype);
1010 }
1011
1012 static int vfswrap_sys_acl_set_qualifier(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry, void *qual)
1013 {
1014         return sys_acl_set_qualifier(entry, qual);
1015 }
1016
1017 static int vfswrap_sys_acl_set_permset(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry, SMB_ACL_PERMSET_T permset)
1018 {
1019         return sys_acl_set_permset(entry, permset);
1020 }
1021
1022 static int vfswrap_sys_acl_valid(vfs_handle_struct *handle,  SMB_ACL_T theacl )
1023 {
1024         return sys_acl_valid(theacl );
1025 }
1026
1027 static int vfswrap_sys_acl_set_file(vfs_handle_struct *handle,  const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl)
1028 {
1029         return sys_acl_set_file(handle, name, acltype, theacl);
1030 }
1031
1032 static int vfswrap_sys_acl_set_fd(vfs_handle_struct *handle, files_struct *fsp, int fd, SMB_ACL_T theacl)
1033 {
1034         return sys_acl_set_fd(handle, fsp, fd, theacl);
1035 }
1036
1037 static int vfswrap_sys_acl_delete_def_file(vfs_handle_struct *handle,  const char *path)
1038 {
1039         return sys_acl_delete_def_file(handle, path);
1040 }
1041
1042 static int vfswrap_sys_acl_get_perm(vfs_handle_struct *handle,  SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm)
1043 {
1044         return sys_acl_get_perm(permset, perm);
1045 }
1046
1047 static int vfswrap_sys_acl_free_text(vfs_handle_struct *handle,  char *text)
1048 {
1049         return sys_acl_free_text(text);
1050 }
1051
1052 static int vfswrap_sys_acl_free_acl(vfs_handle_struct *handle,  SMB_ACL_T posix_acl)
1053 {
1054         return sys_acl_free_acl(posix_acl);
1055 }
1056
1057 static int vfswrap_sys_acl_free_qualifier(vfs_handle_struct *handle,  void *qualifier, SMB_ACL_TAG_T tagtype)
1058 {
1059         return sys_acl_free_qualifier(qualifier, tagtype);
1060 }
1061
1062 /****************************************************************
1063  Extended attribute operations.
1064 *****************************************************************/
1065
1066 static ssize_t vfswrap_getxattr(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size)
1067 {
1068         return sys_getxattr(path, name, value, size);
1069 }
1070
1071 static ssize_t vfswrap_lgetxattr(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size)
1072 {
1073         return sys_lgetxattr(path, name, value, size);
1074 }
1075
1076 static ssize_t vfswrap_fgetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp,int fd, const char *name, void *value, size_t size)
1077 {
1078         return sys_fgetxattr(fd, name, value, size);
1079 }
1080
1081 static ssize_t vfswrap_listxattr(struct vfs_handle_struct *handle, const char *path, char *list, size_t size)
1082 {
1083         return sys_listxattr(path, list, size);
1084 }
1085
1086 ssize_t vfswrap_llistxattr(struct vfs_handle_struct *handle, const char *path, char *list, size_t size)
1087 {
1088         return sys_llistxattr(path, list, size);
1089 }
1090
1091 ssize_t vfswrap_flistxattr(struct vfs_handle_struct *handle, struct files_struct *fsp,int fd, char *list, size_t size)
1092 {
1093         return sys_flistxattr(fd, list, size);
1094 }
1095
1096 static int vfswrap_removexattr(struct vfs_handle_struct *handle, const char *path, const char *name)
1097 {
1098         return sys_removexattr(path, name);
1099 }
1100
1101 static int vfswrap_lremovexattr(struct vfs_handle_struct *handle, const char *path, const char *name)
1102 {
1103         return sys_lremovexattr(path, name);
1104 }
1105
1106 static int vfswrap_fremovexattr(struct vfs_handle_struct *handle, struct files_struct *fsp,int fd, const char *name)
1107 {
1108         return sys_fremovexattr(fd, name);
1109 }
1110
1111 static int vfswrap_setxattr(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags)
1112 {
1113         return sys_setxattr(path, name, value, size, flags);
1114 }
1115
1116 static int vfswrap_lsetxattr(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags)
1117 {
1118         return sys_lsetxattr(path, name, value, size, flags);
1119 }
1120
1121 static int vfswrap_fsetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp,int fd, const char *name, const void *value, size_t size, int flags)
1122 {
1123         return sys_fsetxattr(fd, name, value, size, flags);
1124 }
1125
1126 static int vfswrap_aio_read(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1127 {
1128         return sys_aio_read(aiocb);
1129 }
1130
1131 static int vfswrap_aio_write(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1132 {
1133         return sys_aio_write(aiocb);
1134 }
1135
1136 static ssize_t vfswrap_aio_return(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1137 {
1138         return sys_aio_return(aiocb);
1139 }
1140
1141 static int vfswrap_aio_cancel(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, SMB_STRUCT_AIOCB *aiocb)
1142 {
1143         return sys_aio_cancel(fd, aiocb);
1144 }
1145
1146 static int vfswrap_aio_error(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1147 {
1148         return sys_aio_error(aiocb);
1149 }
1150
1151 static int vfswrap_aio_fsync(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, SMB_STRUCT_AIOCB *aiocb)
1152 {
1153         return sys_aio_fsync(op, aiocb);
1154 }
1155
1156 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)
1157 {
1158         return sys_aio_suspend(aiocb, n, timeout);
1159 }
1160
1161 static vfs_op_tuple vfs_default_ops[] = {
1162
1163         /* Disk operations */
1164
1165         {SMB_VFS_OP(vfswrap_connect),   SMB_VFS_OP_CONNECT,
1166          SMB_VFS_LAYER_OPAQUE},
1167         {SMB_VFS_OP(vfswrap_disconnect),        SMB_VFS_OP_DISCONNECT,
1168          SMB_VFS_LAYER_OPAQUE},
1169         {SMB_VFS_OP(vfswrap_disk_free), SMB_VFS_OP_DISK_FREE,
1170          SMB_VFS_LAYER_OPAQUE},
1171         {SMB_VFS_OP(vfswrap_get_quota), SMB_VFS_OP_GET_QUOTA,
1172          SMB_VFS_LAYER_OPAQUE},
1173         {SMB_VFS_OP(vfswrap_set_quota), SMB_VFS_OP_SET_QUOTA,
1174          SMB_VFS_LAYER_OPAQUE},
1175         {SMB_VFS_OP(vfswrap_get_shadow_copy_data), SMB_VFS_OP_GET_SHADOW_COPY_DATA,
1176          SMB_VFS_LAYER_OPAQUE},
1177         {SMB_VFS_OP(vfswrap_statvfs),   SMB_VFS_OP_STATVFS,
1178          SMB_VFS_LAYER_OPAQUE},
1179
1180         /* Directory operations */
1181
1182         {SMB_VFS_OP(vfswrap_opendir),   SMB_VFS_OP_OPENDIR,
1183          SMB_VFS_LAYER_OPAQUE},
1184         {SMB_VFS_OP(vfswrap_readdir),   SMB_VFS_OP_READDIR,
1185          SMB_VFS_LAYER_OPAQUE},
1186         {SMB_VFS_OP(vfswrap_seekdir),   SMB_VFS_OP_SEEKDIR,
1187          SMB_VFS_LAYER_OPAQUE},
1188         {SMB_VFS_OP(vfswrap_telldir),   SMB_VFS_OP_TELLDIR,
1189          SMB_VFS_LAYER_OPAQUE},
1190         {SMB_VFS_OP(vfswrap_rewinddir), SMB_VFS_OP_REWINDDIR,
1191          SMB_VFS_LAYER_OPAQUE},
1192         {SMB_VFS_OP(vfswrap_mkdir),     SMB_VFS_OP_MKDIR,
1193          SMB_VFS_LAYER_OPAQUE},
1194         {SMB_VFS_OP(vfswrap_rmdir),     SMB_VFS_OP_RMDIR,
1195          SMB_VFS_LAYER_OPAQUE},
1196         {SMB_VFS_OP(vfswrap_closedir),  SMB_VFS_OP_CLOSEDIR,
1197          SMB_VFS_LAYER_OPAQUE},
1198
1199         /* File operations */
1200
1201         {SMB_VFS_OP(vfswrap_open),      SMB_VFS_OP_OPEN,
1202          SMB_VFS_LAYER_OPAQUE},
1203         {SMB_VFS_OP(vfswrap_close),     SMB_VFS_OP_CLOSE,
1204          SMB_VFS_LAYER_OPAQUE},
1205         {SMB_VFS_OP(vfswrap_read),      SMB_VFS_OP_READ,
1206          SMB_VFS_LAYER_OPAQUE},
1207         {SMB_VFS_OP(vfswrap_pread),     SMB_VFS_OP_PREAD,
1208          SMB_VFS_LAYER_OPAQUE},
1209         {SMB_VFS_OP(vfswrap_write),     SMB_VFS_OP_WRITE,
1210          SMB_VFS_LAYER_OPAQUE},
1211         {SMB_VFS_OP(vfswrap_pwrite),    SMB_VFS_OP_PWRITE,
1212          SMB_VFS_LAYER_OPAQUE},
1213         {SMB_VFS_OP(vfswrap_lseek),     SMB_VFS_OP_LSEEK,
1214          SMB_VFS_LAYER_OPAQUE},
1215         {SMB_VFS_OP(vfswrap_sendfile),  SMB_VFS_OP_SENDFILE,
1216          SMB_VFS_LAYER_OPAQUE},
1217         {SMB_VFS_OP(vfswrap_rename),    SMB_VFS_OP_RENAME,
1218          SMB_VFS_LAYER_OPAQUE},
1219         {SMB_VFS_OP(vfswrap_fsync),     SMB_VFS_OP_FSYNC,
1220          SMB_VFS_LAYER_OPAQUE},
1221         {SMB_VFS_OP(vfswrap_stat),      SMB_VFS_OP_STAT,
1222          SMB_VFS_LAYER_OPAQUE},
1223         {SMB_VFS_OP(vfswrap_fstat),     SMB_VFS_OP_FSTAT,
1224          SMB_VFS_LAYER_OPAQUE},
1225         {SMB_VFS_OP(vfswrap_lstat),     SMB_VFS_OP_LSTAT,
1226          SMB_VFS_LAYER_OPAQUE},
1227         {SMB_VFS_OP(vfswrap_unlink),    SMB_VFS_OP_UNLINK,
1228          SMB_VFS_LAYER_OPAQUE},
1229         {SMB_VFS_OP(vfswrap_chmod),     SMB_VFS_OP_CHMOD,
1230          SMB_VFS_LAYER_OPAQUE},
1231         {SMB_VFS_OP(vfswrap_fchmod),    SMB_VFS_OP_FCHMOD,
1232          SMB_VFS_LAYER_OPAQUE},
1233         {SMB_VFS_OP(vfswrap_chown),     SMB_VFS_OP_CHOWN,
1234          SMB_VFS_LAYER_OPAQUE},
1235         {SMB_VFS_OP(vfswrap_fchown),    SMB_VFS_OP_FCHOWN,
1236          SMB_VFS_LAYER_OPAQUE},
1237         {SMB_VFS_OP(vfswrap_chdir),     SMB_VFS_OP_CHDIR,
1238          SMB_VFS_LAYER_OPAQUE},
1239         {SMB_VFS_OP(vfswrap_getwd),     SMB_VFS_OP_GETWD,
1240          SMB_VFS_LAYER_OPAQUE},
1241         {SMB_VFS_OP(vfswrap_utime),     SMB_VFS_OP_UTIME,
1242          SMB_VFS_LAYER_OPAQUE},
1243         {SMB_VFS_OP(vfswrap_ftruncate), SMB_VFS_OP_FTRUNCATE,
1244          SMB_VFS_LAYER_OPAQUE},
1245         {SMB_VFS_OP(vfswrap_lock),      SMB_VFS_OP_LOCK,
1246          SMB_VFS_LAYER_OPAQUE},
1247         {SMB_VFS_OP(vfswrap_kernel_flock),      SMB_VFS_OP_KERNEL_FLOCK,
1248          SMB_VFS_LAYER_OPAQUE},
1249         {SMB_VFS_OP(vfswrap_linux_setlease),    SMB_VFS_OP_LINUX_SETLEASE,
1250          SMB_VFS_LAYER_OPAQUE},
1251         {SMB_VFS_OP(vfswrap_getlock),   SMB_VFS_OP_GETLOCK,
1252          SMB_VFS_LAYER_OPAQUE},
1253         {SMB_VFS_OP(vfswrap_symlink),   SMB_VFS_OP_SYMLINK,
1254          SMB_VFS_LAYER_OPAQUE},
1255         {SMB_VFS_OP(vfswrap_readlink),  SMB_VFS_OP_READLINK,
1256          SMB_VFS_LAYER_OPAQUE},
1257         {SMB_VFS_OP(vfswrap_link),      SMB_VFS_OP_LINK,
1258          SMB_VFS_LAYER_OPAQUE},
1259         {SMB_VFS_OP(vfswrap_mknod),     SMB_VFS_OP_MKNOD,
1260          SMB_VFS_LAYER_OPAQUE},
1261         {SMB_VFS_OP(vfswrap_realpath),  SMB_VFS_OP_REALPATH,
1262          SMB_VFS_LAYER_OPAQUE},
1263         {SMB_VFS_OP(vfswrap_notify_watch),      SMB_VFS_OP_NOTIFY_WATCH,
1264          SMB_VFS_LAYER_OPAQUE},
1265
1266         /* NT ACL operations. */
1267
1268         {SMB_VFS_OP(vfswrap_fget_nt_acl),       SMB_VFS_OP_FGET_NT_ACL,
1269          SMB_VFS_LAYER_OPAQUE},
1270         {SMB_VFS_OP(vfswrap_get_nt_acl),        SMB_VFS_OP_GET_NT_ACL,
1271          SMB_VFS_LAYER_OPAQUE},
1272         {SMB_VFS_OP(vfswrap_fset_nt_acl),       SMB_VFS_OP_FSET_NT_ACL,
1273          SMB_VFS_LAYER_OPAQUE},
1274         {SMB_VFS_OP(vfswrap_set_nt_acl),        SMB_VFS_OP_SET_NT_ACL,
1275          SMB_VFS_LAYER_OPAQUE},
1276
1277         /* POSIX ACL operations. */
1278
1279         {SMB_VFS_OP(vfswrap_chmod_acl), SMB_VFS_OP_CHMOD_ACL,
1280          SMB_VFS_LAYER_OPAQUE},
1281         {SMB_VFS_OP(vfswrap_fchmod_acl),        SMB_VFS_OP_FCHMOD_ACL,
1282          SMB_VFS_LAYER_OPAQUE},
1283         {SMB_VFS_OP(vfswrap_sys_acl_get_entry), SMB_VFS_OP_SYS_ACL_GET_ENTRY,
1284          SMB_VFS_LAYER_OPAQUE},
1285         {SMB_VFS_OP(vfswrap_sys_acl_get_tag_type),      SMB_VFS_OP_SYS_ACL_GET_TAG_TYPE,
1286          SMB_VFS_LAYER_OPAQUE},
1287         {SMB_VFS_OP(vfswrap_sys_acl_get_permset),       SMB_VFS_OP_SYS_ACL_GET_PERMSET,
1288          SMB_VFS_LAYER_OPAQUE},
1289         {SMB_VFS_OP(vfswrap_sys_acl_get_qualifier),     SMB_VFS_OP_SYS_ACL_GET_QUALIFIER,
1290          SMB_VFS_LAYER_OPAQUE},
1291         {SMB_VFS_OP(vfswrap_sys_acl_get_file),  SMB_VFS_OP_SYS_ACL_GET_FILE,
1292          SMB_VFS_LAYER_OPAQUE},
1293         {SMB_VFS_OP(vfswrap_sys_acl_get_fd),    SMB_VFS_OP_SYS_ACL_GET_FD,
1294          SMB_VFS_LAYER_OPAQUE},
1295         {SMB_VFS_OP(vfswrap_sys_acl_clear_perms),       SMB_VFS_OP_SYS_ACL_CLEAR_PERMS,
1296          SMB_VFS_LAYER_OPAQUE},
1297         {SMB_VFS_OP(vfswrap_sys_acl_add_perm),  SMB_VFS_OP_SYS_ACL_ADD_PERM,
1298          SMB_VFS_LAYER_OPAQUE},
1299         {SMB_VFS_OP(vfswrap_sys_acl_to_text),   SMB_VFS_OP_SYS_ACL_TO_TEXT,
1300          SMB_VFS_LAYER_OPAQUE},
1301         {SMB_VFS_OP(vfswrap_sys_acl_init),      SMB_VFS_OP_SYS_ACL_INIT,
1302          SMB_VFS_LAYER_OPAQUE},
1303         {SMB_VFS_OP(vfswrap_sys_acl_create_entry),      SMB_VFS_OP_SYS_ACL_CREATE_ENTRY,
1304          SMB_VFS_LAYER_OPAQUE},
1305         {SMB_VFS_OP(vfswrap_sys_acl_set_tag_type),      SMB_VFS_OP_SYS_ACL_SET_TAG_TYPE,
1306          SMB_VFS_LAYER_OPAQUE},
1307         {SMB_VFS_OP(vfswrap_sys_acl_set_qualifier),     SMB_VFS_OP_SYS_ACL_SET_QUALIFIER,
1308          SMB_VFS_LAYER_OPAQUE},
1309         {SMB_VFS_OP(vfswrap_sys_acl_set_permset),       SMB_VFS_OP_SYS_ACL_SET_PERMSET,
1310          SMB_VFS_LAYER_OPAQUE},
1311         {SMB_VFS_OP(vfswrap_sys_acl_valid),     SMB_VFS_OP_SYS_ACL_VALID,
1312          SMB_VFS_LAYER_OPAQUE},
1313         {SMB_VFS_OP(vfswrap_sys_acl_set_file),  SMB_VFS_OP_SYS_ACL_SET_FILE,
1314          SMB_VFS_LAYER_OPAQUE},
1315         {SMB_VFS_OP(vfswrap_sys_acl_set_fd),    SMB_VFS_OP_SYS_ACL_SET_FD,
1316          SMB_VFS_LAYER_OPAQUE},
1317         {SMB_VFS_OP(vfswrap_sys_acl_delete_def_file),   SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE,
1318          SMB_VFS_LAYER_OPAQUE},
1319         {SMB_VFS_OP(vfswrap_sys_acl_get_perm),  SMB_VFS_OP_SYS_ACL_GET_PERM,
1320          SMB_VFS_LAYER_OPAQUE},
1321         {SMB_VFS_OP(vfswrap_sys_acl_free_text), SMB_VFS_OP_SYS_ACL_FREE_TEXT,
1322          SMB_VFS_LAYER_OPAQUE},
1323         {SMB_VFS_OP(vfswrap_sys_acl_free_acl),  SMB_VFS_OP_SYS_ACL_FREE_ACL,
1324          SMB_VFS_LAYER_OPAQUE},
1325         {SMB_VFS_OP(vfswrap_sys_acl_free_qualifier),    SMB_VFS_OP_SYS_ACL_FREE_QUALIFIER,
1326          SMB_VFS_LAYER_OPAQUE},
1327
1328         /* EA operations. */
1329
1330         {SMB_VFS_OP(vfswrap_getxattr),  SMB_VFS_OP_GETXATTR,
1331          SMB_VFS_LAYER_OPAQUE},
1332         {SMB_VFS_OP(vfswrap_lgetxattr), SMB_VFS_OP_LGETXATTR,
1333          SMB_VFS_LAYER_OPAQUE},
1334         {SMB_VFS_OP(vfswrap_fgetxattr), SMB_VFS_OP_FGETXATTR,
1335          SMB_VFS_LAYER_OPAQUE},
1336         {SMB_VFS_OP(vfswrap_listxattr), SMB_VFS_OP_LISTXATTR,
1337          SMB_VFS_LAYER_OPAQUE},
1338         {SMB_VFS_OP(vfswrap_llistxattr),        SMB_VFS_OP_LLISTXATTR,
1339          SMB_VFS_LAYER_OPAQUE},
1340         {SMB_VFS_OP(vfswrap_flistxattr),        SMB_VFS_OP_FLISTXATTR,
1341          SMB_VFS_LAYER_OPAQUE},
1342         {SMB_VFS_OP(vfswrap_removexattr),       SMB_VFS_OP_REMOVEXATTR,
1343          SMB_VFS_LAYER_OPAQUE},
1344         {SMB_VFS_OP(vfswrap_lremovexattr),      SMB_VFS_OP_LREMOVEXATTR,
1345          SMB_VFS_LAYER_OPAQUE},
1346         {SMB_VFS_OP(vfswrap_fremovexattr),      SMB_VFS_OP_FREMOVEXATTR,
1347          SMB_VFS_LAYER_OPAQUE},
1348         {SMB_VFS_OP(vfswrap_setxattr),  SMB_VFS_OP_SETXATTR,
1349          SMB_VFS_LAYER_OPAQUE},
1350         {SMB_VFS_OP(vfswrap_lsetxattr), SMB_VFS_OP_LSETXATTR,
1351          SMB_VFS_LAYER_OPAQUE},
1352         {SMB_VFS_OP(vfswrap_fsetxattr), SMB_VFS_OP_FSETXATTR,
1353          SMB_VFS_LAYER_OPAQUE},
1354
1355         {SMB_VFS_OP(vfswrap_aio_read),  SMB_VFS_OP_AIO_READ,
1356          SMB_VFS_LAYER_OPAQUE},
1357         {SMB_VFS_OP(vfswrap_aio_write), SMB_VFS_OP_AIO_WRITE,
1358          SMB_VFS_LAYER_OPAQUE},
1359         {SMB_VFS_OP(vfswrap_aio_return),        SMB_VFS_OP_AIO_RETURN,
1360          SMB_VFS_LAYER_OPAQUE},
1361         {SMB_VFS_OP(vfswrap_aio_cancel), SMB_VFS_OP_AIO_CANCEL,
1362          SMB_VFS_LAYER_OPAQUE},
1363         {SMB_VFS_OP(vfswrap_aio_error), SMB_VFS_OP_AIO_ERROR,
1364          SMB_VFS_LAYER_OPAQUE},
1365         {SMB_VFS_OP(vfswrap_aio_fsync), SMB_VFS_OP_AIO_FSYNC,
1366          SMB_VFS_LAYER_OPAQUE},
1367         {SMB_VFS_OP(vfswrap_aio_suspend),SMB_VFS_OP_AIO_SUSPEND,
1368          SMB_VFS_LAYER_OPAQUE},
1369
1370         /* Finish VFS operations definition */
1371
1372         {SMB_VFS_OP(NULL),              SMB_VFS_OP_NOOP,
1373          SMB_VFS_LAYER_NOOP}
1374 };
1375
1376 NTSTATUS vfs_default_init(void);
1377 NTSTATUS vfs_default_init(void)
1378 {
1379         unsigned int needed = SMB_VFS_OP_LAST + 1; /* convert from index to count */
1380
1381         if (ARRAY_SIZE(vfs_default_ops) != needed) {
1382                 DEBUG(0, ("%s: %u ops registered, but %u ops are required\n",
1383                         DEFAULT_VFS_MODULE_NAME, (unsigned int)ARRAY_SIZE(vfs_default_ops), needed));
1384                 smb_panic("operation(s) missing from default VFS module");
1385         }
1386
1387         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
1388                                 DEFAULT_VFS_MODULE_NAME, vfs_default_ops);
1389 }