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_symlink(vfs_handle_struct *handle,  const char *oldpath, const char *newpath)
 787 {
 788         int result;
 789
 790         START_PROFILE(syscall_symlink);
 791         result = sys_symlink(oldpath, newpath);
 792         END_PROFILE(syscall_symlink);
 793         return result;
 794 }
 795
 796 static int vfswrap_readlink(vfs_handle_struct *handle,  const char *path, char *buf, size_t bufsiz)
 797 {
 798         int result;
 799
 800         START_PROFILE(syscall_readlink);
 801         result = sys_readlink(path, buf, bufsiz);
 802         END_PROFILE(syscall_readlink);
 803         return result;
 804 }
 805
 806 static int vfswrap_link(vfs_handle_struct *handle,  const char *oldpath, const char *newpath)
 807 {
 808         int result;
 809
 810         START_PROFILE(syscall_link);
 811         result = sys_link(oldpath, newpath);
 812         END_PROFILE(syscall_link);
 813         return result;
 814 }
 815
 816 static int vfswrap_mknod(vfs_handle_struct *handle,  const char *pathname, mode_t mode, SMB_DEV_T dev)
 817 {
 818         int result;
 819
 820         START_PROFILE(syscall_mknod);
 821         result = sys_mknod(pathname, mode, dev);
 822         END_PROFILE(syscall_mknod);
 823         return result;
 824 }
 825
 826 static char *vfswrap_realpath(vfs_handle_struct *handle,  const char *path, char *resolved_path)
 827 {
 828         char *result;
 829
 830         START_PROFILE(syscall_realpath);
 831         result = sys_realpath(path, resolved_path);
 832         END_PROFILE(syscall_realpath);
 833         return result;
 834 }
 835
 836 static size_t vfswrap_fget_nt_acl(vfs_handle_struct *handle, files_struct *fsp, int fd, uint32 security_info, SEC_DESC **ppdesc)
 837 {
 838         size_t result;
 839
 840         START_PROFILE(fget_nt_acl);
 841         result = get_nt_acl(fsp, security_info, ppdesc);
 842         END_PROFILE(fget_nt_acl);
 843         return result;
 844 }
 845
 846 static size_t vfswrap_get_nt_acl(vfs_handle_struct *handle, files_struct *fsp, const char *name, uint32 security_info, SEC_DESC **ppdesc)
 847 {
 848         size_t result;
 849
 850         START_PROFILE(get_nt_acl);
 851         result = get_nt_acl(fsp, security_info, ppdesc);
 852         END_PROFILE(get_nt_acl);
 853         return result;
 854 }
 855
 856 static BOOL vfswrap_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, int fd, uint32 security_info_sent, SEC_DESC *psd)
 857 {
 858         BOOL result;
 859
 860         START_PROFILE(fset_nt_acl);
 861         result = set_nt_acl(fsp, security_info_sent, psd);
 862         END_PROFILE(fset_nt_acl);
 863         return result;
 864 }
 865
 866 static BOOL vfswrap_set_nt_acl(vfs_handle_struct *handle, files_struct *fsp, const char *name, uint32 security_info_sent, SEC_DESC *psd)
 867 {
 868         BOOL result;
 869
 870         START_PROFILE(set_nt_acl);
 871         result = set_nt_acl(fsp, security_info_sent, psd);
 872         END_PROFILE(set_nt_acl);
 873         return result;
 874 }
 875
 876 static int vfswrap_chmod_acl(vfs_handle_struct *handle,  const char *name, mode_t mode)
 877 {
 878 #ifdef HAVE_NO_ACL
 879         errno = ENOSYS;
 880         return -1;
 881 #else
 882         int result;
 883
 884         START_PROFILE(chmod_acl);
 885         result = chmod_acl(handle->conn, name, mode);
 886         END_PROFILE(chmod_acl);
 887         return result;
 888 #endif
 889 }
 890
 891 static int vfswrap_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, int fd, mode_t mode)
 892 {
 893 #ifdef HAVE_NO_ACL
 894         errno = ENOSYS;
 895         return -1;
 896 #else
 897         int result;
 898
 899         START_PROFILE(fchmod_acl);
 900         result = fchmod_acl(fsp, fd, mode);
 901         END_PROFILE(fchmod_acl);
 902         return result;
 903 #endif
 904 }
 905
 906 static int vfswrap_sys_acl_get_entry(vfs_handle_struct *handle,  SMB_ACL_T theacl, int entry_id, SMB_ACL_ENTRY_T *entry_p)
 907 {
 908         return sys_acl_get_entry(theacl, entry_id, entry_p);
 909 }
 910
 911 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)
 912 {
 913         return sys_acl_get_tag_type(entry_d, tag_type_p);
 914 }
 915
 916 static int vfswrap_sys_acl_get_permset(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry_d, SMB_ACL_PERMSET_T *permset_p)
 917 {
 918         return sys_acl_get_permset(entry_d, permset_p);
 919 }
 920
 921 static void * vfswrap_sys_acl_get_qualifier(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry_d)
 922 {
 923         return sys_acl_get_qualifier(entry_d);
 924 }
 925
 926 static SMB_ACL_T vfswrap_sys_acl_get_file(vfs_handle_struct *handle,  const char *path_p, SMB_ACL_TYPE_T type)
 927 {
 928         return sys_acl_get_file(handle, path_p, type);
 929 }
 930
 931 static SMB_ACL_T vfswrap_sys_acl_get_fd(vfs_handle_struct *handle, files_struct *fsp, int fd)
 932 {
 933         return sys_acl_get_fd(handle, fsp, fd);
 934 }
 935
 936 static int vfswrap_sys_acl_clear_perms(vfs_handle_struct *handle,  SMB_ACL_PERMSET_T permset)
 937 {
 938         return sys_acl_clear_perms(permset);
 939 }
 940
 941 static int vfswrap_sys_acl_add_perm(vfs_handle_struct *handle,  SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm)
 942 {
 943         return sys_acl_add_perm(permset, perm);
 944 }
 945
 946 static char * vfswrap_sys_acl_to_text(vfs_handle_struct *handle,  SMB_ACL_T theacl, ssize_t *plen)
 947 {
 948         return sys_acl_to_text(theacl, plen);
 949 }
 950
 951 static SMB_ACL_T vfswrap_sys_acl_init(vfs_handle_struct *handle,  int count)
 952 {
 953         return sys_acl_init(count);
 954 }
 955
 956 static int vfswrap_sys_acl_create_entry(vfs_handle_struct *handle,  SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry)
 957 {
 958         return sys_acl_create_entry(pacl, pentry);
 959 }
 960
 961 static int vfswrap_sys_acl_set_tag_type(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry, SMB_ACL_TAG_T tagtype)
 962 {
 963         return sys_acl_set_tag_type(entry, tagtype);
 964 }
 965
 966 static int vfswrap_sys_acl_set_qualifier(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry, void *qual)
 967 {
 968         return sys_acl_set_qualifier(entry, qual);
 969 }
 970
 971 static int vfswrap_sys_acl_set_permset(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry, SMB_ACL_PERMSET_T permset)
 972 {
 973         return sys_acl_set_permset(entry, permset);
 974 }
 975
 976 static int vfswrap_sys_acl_valid(vfs_handle_struct *handle,  SMB_ACL_T theacl )
 977 {
 978         return sys_acl_valid(theacl );
 979 }
 980
 981 static int vfswrap_sys_acl_set_file(vfs_handle_struct *handle,  const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl)
 982 {
 983         return sys_acl_set_file(handle, name, acltype, theacl);
 984 }
 985
 986 static int vfswrap_sys_acl_set_fd(vfs_handle_struct *handle, files_struct *fsp, int fd, SMB_ACL_T theacl)
 987 {
 988         return sys_acl_set_fd(handle, fsp, fd, theacl);
 989 }
 990
 991 static int vfswrap_sys_acl_delete_def_file(vfs_handle_struct *handle,  const char *path)
 992 {
 993         return sys_acl_delete_def_file(handle, path);
 994 }
 995
 996 static int vfswrap_sys_acl_get_perm(vfs_handle_struct *handle,  SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm)
 997 {
 998         return sys_acl_get_perm(permset, perm);
 999 }
1000
1001 static int vfswrap_sys_acl_free_text(vfs_handle_struct *handle,  char *text)
1002 {
1003         return sys_acl_free_text(text);
1004 }
1005
1006 static int vfswrap_sys_acl_free_acl(vfs_handle_struct *handle,  SMB_ACL_T posix_acl)
1007 {
1008         return sys_acl_free_acl(posix_acl);
1009 }
1010
1011 static int vfswrap_sys_acl_free_qualifier(vfs_handle_struct *handle,  void *qualifier, SMB_ACL_TAG_T tagtype)
1012 {
1013         return sys_acl_free_qualifier(qualifier, tagtype);
1014 }
1015
1016 /****************************************************************
1017  Extended attribute operations.
1018 *****************************************************************/
1019
1020 static ssize_t vfswrap_getxattr(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size)
1021 {
1022         return sys_getxattr(path, name, value, size);
1023 }
1024
1025 static ssize_t vfswrap_lgetxattr(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size)
1026 {
1027         return sys_lgetxattr(path, name, value, size);
1028 }
1029
1030 static ssize_t vfswrap_fgetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp,int fd, const char *name, void *value, size_t size)
1031 {
1032         return sys_fgetxattr(fd, name, value, size);
1033 }
1034
1035 static ssize_t vfswrap_listxattr(struct vfs_handle_struct *handle, const char *path, char *list, size_t size)
1036 {
1037         return sys_listxattr(path, list, size);
1038 }
1039
1040 ssize_t vfswrap_llistxattr(struct vfs_handle_struct *handle, const char *path, char *list, size_t size)
1041 {
1042         return sys_llistxattr(path, list, size);
1043 }
1044
1045 ssize_t vfswrap_flistxattr(struct vfs_handle_struct *handle, struct files_struct *fsp,int fd, char *list, size_t size)
1046 {
1047         return sys_flistxattr(fd, list, size);
1048 }
1049
1050 static int vfswrap_removexattr(struct vfs_handle_struct *handle, const char *path, const char *name)
1051 {
1052         return sys_removexattr(path, name);
1053 }
1054
1055 static int vfswrap_lremovexattr(struct vfs_handle_struct *handle, const char *path, const char *name)
1056 {
1057         return sys_lremovexattr(path, name);
1058 }
1059
1060 static int vfswrap_fremovexattr(struct vfs_handle_struct *handle, struct files_struct *fsp,int fd, const char *name)
1061 {
1062         return sys_fremovexattr(fd, name);
1063 }
1064
1065 static int vfswrap_setxattr(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags)
1066 {
1067         return sys_setxattr(path, name, value, size, flags);
1068 }
1069
1070 static int vfswrap_lsetxattr(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags)
1071 {
1072         return sys_lsetxattr(path, name, value, size, flags);
1073 }
1074
1075 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)
1076 {
1077         return sys_fsetxattr(fd, name, value, size, flags);
1078 }
1079
1080 static int vfswrap_aio_read(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1081 {
1082         return sys_aio_read(aiocb);
1083 }
1084
1085 static int vfswrap_aio_write(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1086 {
1087         return sys_aio_write(aiocb);
1088 }
1089
1090 static ssize_t vfswrap_aio_return(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1091 {
1092         return sys_aio_return(aiocb);
1093 }
1094
1095 static int vfswrap_aio_cancel(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, SMB_STRUCT_AIOCB *aiocb)
1096 {
1097         return sys_aio_cancel(fd, aiocb);
1098 }
1099
1100 static int vfswrap_aio_error(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1101 {
1102         return sys_aio_error(aiocb);
1103 }
1104
1105 static int vfswrap_aio_fsync(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, SMB_STRUCT_AIOCB *aiocb)
1106 {
1107         return sys_aio_fsync(op, aiocb);
1108 }
1109
1110 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)
1111 {
1112         return sys_aio_suspend(aiocb, n, timeout);
1113 }
1114
1115 static vfs_op_tuple vfs_default_ops[] = {
1116
1117         /* Disk operations */
1118
1119         {SMB_VFS_OP(vfswrap_connect),   SMB_VFS_OP_CONNECT,
1120          SMB_VFS_LAYER_OPAQUE},
1121         {SMB_VFS_OP(vfswrap_disconnect),        SMB_VFS_OP_DISCONNECT,
1122          SMB_VFS_LAYER_OPAQUE},
1123         {SMB_VFS_OP(vfswrap_disk_free), SMB_VFS_OP_DISK_FREE,
1124          SMB_VFS_LAYER_OPAQUE},
1125         {SMB_VFS_OP(vfswrap_get_quota), SMB_VFS_OP_GET_QUOTA,
1126          SMB_VFS_LAYER_OPAQUE},
1127         {SMB_VFS_OP(vfswrap_set_quota), SMB_VFS_OP_SET_QUOTA,
1128          SMB_VFS_LAYER_OPAQUE},
1129         {SMB_VFS_OP(vfswrap_get_shadow_copy_data), SMB_VFS_OP_GET_SHADOW_COPY_DATA,
1130          SMB_VFS_LAYER_OPAQUE},
1131         {SMB_VFS_OP(vfswrap_statvfs),   SMB_VFS_OP_STATVFS,
1132          SMB_VFS_LAYER_OPAQUE},
1133
1134         /* Directory operations */
1135
1136         {SMB_VFS_OP(vfswrap_opendir),   SMB_VFS_OP_OPENDIR,
1137          SMB_VFS_LAYER_OPAQUE},
1138         {SMB_VFS_OP(vfswrap_readdir),   SMB_VFS_OP_READDIR,
1139          SMB_VFS_LAYER_OPAQUE},
1140         {SMB_VFS_OP(vfswrap_seekdir),   SMB_VFS_OP_SEEKDIR,
1141          SMB_VFS_LAYER_OPAQUE},
1142         {SMB_VFS_OP(vfswrap_telldir),   SMB_VFS_OP_TELLDIR,
1143          SMB_VFS_LAYER_OPAQUE},
1144         {SMB_VFS_OP(vfswrap_rewinddir), SMB_VFS_OP_REWINDDIR,
1145          SMB_VFS_LAYER_OPAQUE},
1146         {SMB_VFS_OP(vfswrap_mkdir),     SMB_VFS_OP_MKDIR,
1147          SMB_VFS_LAYER_OPAQUE},
1148         {SMB_VFS_OP(vfswrap_rmdir),     SMB_VFS_OP_RMDIR,
1149          SMB_VFS_LAYER_OPAQUE},
1150         {SMB_VFS_OP(vfswrap_closedir),  SMB_VFS_OP_CLOSEDIR,
1151          SMB_VFS_LAYER_OPAQUE},
1152
1153         /* File operations */
1154
1155         {SMB_VFS_OP(vfswrap_open),      SMB_VFS_OP_OPEN,
1156          SMB_VFS_LAYER_OPAQUE},
1157         {SMB_VFS_OP(vfswrap_close),     SMB_VFS_OP_CLOSE,
1158          SMB_VFS_LAYER_OPAQUE},
1159         {SMB_VFS_OP(vfswrap_read),      SMB_VFS_OP_READ,
1160          SMB_VFS_LAYER_OPAQUE},
1161         {SMB_VFS_OP(vfswrap_pread),     SMB_VFS_OP_PREAD,
1162          SMB_VFS_LAYER_OPAQUE},
1163         {SMB_VFS_OP(vfswrap_write),     SMB_VFS_OP_WRITE,
1164          SMB_VFS_LAYER_OPAQUE},
1165         {SMB_VFS_OP(vfswrap_pwrite),    SMB_VFS_OP_PWRITE,
1166          SMB_VFS_LAYER_OPAQUE},
1167         {SMB_VFS_OP(vfswrap_lseek),     SMB_VFS_OP_LSEEK,
1168          SMB_VFS_LAYER_OPAQUE},
1169         {SMB_VFS_OP(vfswrap_sendfile),  SMB_VFS_OP_SENDFILE,
1170          SMB_VFS_LAYER_OPAQUE},
1171         {SMB_VFS_OP(vfswrap_rename),    SMB_VFS_OP_RENAME,
1172          SMB_VFS_LAYER_OPAQUE},
1173         {SMB_VFS_OP(vfswrap_fsync),     SMB_VFS_OP_FSYNC,
1174          SMB_VFS_LAYER_OPAQUE},
1175         {SMB_VFS_OP(vfswrap_stat),      SMB_VFS_OP_STAT,
1176          SMB_VFS_LAYER_OPAQUE},
1177         {SMB_VFS_OP(vfswrap_fstat),     SMB_VFS_OP_FSTAT,
1178          SMB_VFS_LAYER_OPAQUE},
1179         {SMB_VFS_OP(vfswrap_lstat),     SMB_VFS_OP_LSTAT,
1180          SMB_VFS_LAYER_OPAQUE},
1181         {SMB_VFS_OP(vfswrap_unlink),    SMB_VFS_OP_UNLINK,
1182          SMB_VFS_LAYER_OPAQUE},
1183         {SMB_VFS_OP(vfswrap_chmod),     SMB_VFS_OP_CHMOD,
1184          SMB_VFS_LAYER_OPAQUE},
1185         {SMB_VFS_OP(vfswrap_fchmod),    SMB_VFS_OP_FCHMOD,
1186          SMB_VFS_LAYER_OPAQUE},
1187         {SMB_VFS_OP(vfswrap_chown),     SMB_VFS_OP_CHOWN,
1188          SMB_VFS_LAYER_OPAQUE},
1189         {SMB_VFS_OP(vfswrap_fchown),    SMB_VFS_OP_FCHOWN,
1190          SMB_VFS_LAYER_OPAQUE},
1191         {SMB_VFS_OP(vfswrap_chdir),     SMB_VFS_OP_CHDIR,
1192          SMB_VFS_LAYER_OPAQUE},
1193         {SMB_VFS_OP(vfswrap_getwd),     SMB_VFS_OP_GETWD,
1194          SMB_VFS_LAYER_OPAQUE},
1195         {SMB_VFS_OP(vfswrap_utime),     SMB_VFS_OP_UTIME,
1196          SMB_VFS_LAYER_OPAQUE},
1197         {SMB_VFS_OP(vfswrap_ftruncate), SMB_VFS_OP_FTRUNCATE,
1198          SMB_VFS_LAYER_OPAQUE},
1199         {SMB_VFS_OP(vfswrap_lock),      SMB_VFS_OP_LOCK,
1200          SMB_VFS_LAYER_OPAQUE},
1201         {SMB_VFS_OP(vfswrap_kernel_flock),      SMB_VFS_OP_KERNEL_FLOCK,
1202          SMB_VFS_LAYER_OPAQUE},
1203         {SMB_VFS_OP(vfswrap_getlock),   SMB_VFS_OP_GETLOCK,
1204          SMB_VFS_LAYER_OPAQUE},
1205         {SMB_VFS_OP(vfswrap_symlink),   SMB_VFS_OP_SYMLINK,
1206          SMB_VFS_LAYER_OPAQUE},
1207         {SMB_VFS_OP(vfswrap_readlink),  SMB_VFS_OP_READLINK,
1208          SMB_VFS_LAYER_OPAQUE},
1209         {SMB_VFS_OP(vfswrap_link),      SMB_VFS_OP_LINK,
1210          SMB_VFS_LAYER_OPAQUE},
1211         {SMB_VFS_OP(vfswrap_mknod),     SMB_VFS_OP_MKNOD,
1212          SMB_VFS_LAYER_OPAQUE},
1213         {SMB_VFS_OP(vfswrap_realpath),  SMB_VFS_OP_REALPATH,
1214          SMB_VFS_LAYER_OPAQUE},
1215
1216         /* NT ACL operations. */
1217
1218         {SMB_VFS_OP(vfswrap_fget_nt_acl),       SMB_VFS_OP_FGET_NT_ACL,
1219          SMB_VFS_LAYER_OPAQUE},
1220         {SMB_VFS_OP(vfswrap_get_nt_acl),        SMB_VFS_OP_GET_NT_ACL,
1221          SMB_VFS_LAYER_OPAQUE},
1222         {SMB_VFS_OP(vfswrap_fset_nt_acl),       SMB_VFS_OP_FSET_NT_ACL,
1223          SMB_VFS_LAYER_OPAQUE},
1224         {SMB_VFS_OP(vfswrap_set_nt_acl),        SMB_VFS_OP_SET_NT_ACL,
1225          SMB_VFS_LAYER_OPAQUE},
1226
1227         /* POSIX ACL operations. */
1228
1229         {SMB_VFS_OP(vfswrap_chmod_acl), SMB_VFS_OP_CHMOD_ACL,
1230          SMB_VFS_LAYER_OPAQUE},
1231         {SMB_VFS_OP(vfswrap_fchmod_acl),        SMB_VFS_OP_FCHMOD_ACL,
1232          SMB_VFS_LAYER_OPAQUE},
1233         {SMB_VFS_OP(vfswrap_sys_acl_get_entry), SMB_VFS_OP_SYS_ACL_GET_ENTRY,
1234          SMB_VFS_LAYER_OPAQUE},
1235         {SMB_VFS_OP(vfswrap_sys_acl_get_tag_type),      SMB_VFS_OP_SYS_ACL_GET_TAG_TYPE,
1236          SMB_VFS_LAYER_OPAQUE},
1237         {SMB_VFS_OP(vfswrap_sys_acl_get_permset),       SMB_VFS_OP_SYS_ACL_GET_PERMSET,
1238          SMB_VFS_LAYER_OPAQUE},
1239         {SMB_VFS_OP(vfswrap_sys_acl_get_qualifier),     SMB_VFS_OP_SYS_ACL_GET_QUALIFIER,
1240          SMB_VFS_LAYER_OPAQUE},
1241         {SMB_VFS_OP(vfswrap_sys_acl_get_file),  SMB_VFS_OP_SYS_ACL_GET_FILE,
1242          SMB_VFS_LAYER_OPAQUE},
1243         {SMB_VFS_OP(vfswrap_sys_acl_get_fd),    SMB_VFS_OP_SYS_ACL_GET_FD,
1244          SMB_VFS_LAYER_OPAQUE},
1245         {SMB_VFS_OP(vfswrap_sys_acl_clear_perms),       SMB_VFS_OP_SYS_ACL_CLEAR_PERMS,
1246          SMB_VFS_LAYER_OPAQUE},
1247         {SMB_VFS_OP(vfswrap_sys_acl_add_perm),  SMB_VFS_OP_SYS_ACL_ADD_PERM,
1248          SMB_VFS_LAYER_OPAQUE},
1249         {SMB_VFS_OP(vfswrap_sys_acl_to_text),   SMB_VFS_OP_SYS_ACL_TO_TEXT,
1250          SMB_VFS_LAYER_OPAQUE},
1251         {SMB_VFS_OP(vfswrap_sys_acl_init),      SMB_VFS_OP_SYS_ACL_INIT,
1252          SMB_VFS_LAYER_OPAQUE},
1253         {SMB_VFS_OP(vfswrap_sys_acl_create_entry),      SMB_VFS_OP_SYS_ACL_CREATE_ENTRY,
1254          SMB_VFS_LAYER_OPAQUE},
1255         {SMB_VFS_OP(vfswrap_sys_acl_set_tag_type),      SMB_VFS_OP_SYS_ACL_SET_TAG_TYPE,
1256          SMB_VFS_LAYER_OPAQUE},
1257         {SMB_VFS_OP(vfswrap_sys_acl_set_qualifier),     SMB_VFS_OP_SYS_ACL_SET_QUALIFIER,
1258          SMB_VFS_LAYER_OPAQUE},
1259         {SMB_VFS_OP(vfswrap_sys_acl_set_permset),       SMB_VFS_OP_SYS_ACL_SET_PERMSET,
1260          SMB_VFS_LAYER_OPAQUE},
1261         {SMB_VFS_OP(vfswrap_sys_acl_valid),     SMB_VFS_OP_SYS_ACL_VALID,
1262          SMB_VFS_LAYER_OPAQUE},
1263         {SMB_VFS_OP(vfswrap_sys_acl_set_file),  SMB_VFS_OP_SYS_ACL_SET_FILE,
1264          SMB_VFS_LAYER_OPAQUE},
1265         {SMB_VFS_OP(vfswrap_sys_acl_set_fd),    SMB_VFS_OP_SYS_ACL_SET_FD,
1266          SMB_VFS_LAYER_OPAQUE},
1267         {SMB_VFS_OP(vfswrap_sys_acl_delete_def_file),   SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE,
1268          SMB_VFS_LAYER_OPAQUE},
1269         {SMB_VFS_OP(vfswrap_sys_acl_get_perm),  SMB_VFS_OP_SYS_ACL_GET_PERM,
1270          SMB_VFS_LAYER_OPAQUE},
1271         {SMB_VFS_OP(vfswrap_sys_acl_free_text), SMB_VFS_OP_SYS_ACL_FREE_TEXT,
1272          SMB_VFS_LAYER_OPAQUE},
1273         {SMB_VFS_OP(vfswrap_sys_acl_free_acl),  SMB_VFS_OP_SYS_ACL_FREE_ACL,
1274          SMB_VFS_LAYER_OPAQUE},
1275         {SMB_VFS_OP(vfswrap_sys_acl_free_qualifier),    SMB_VFS_OP_SYS_ACL_FREE_QUALIFIER,
1276          SMB_VFS_LAYER_OPAQUE},
1277
1278         /* EA operations. */
1279
1280         {SMB_VFS_OP(vfswrap_getxattr),  SMB_VFS_OP_GETXATTR,
1281          SMB_VFS_LAYER_OPAQUE},
1282         {SMB_VFS_OP(vfswrap_lgetxattr), SMB_VFS_OP_LGETXATTR,
1283          SMB_VFS_LAYER_OPAQUE},
1284         {SMB_VFS_OP(vfswrap_fgetxattr), SMB_VFS_OP_FGETXATTR,
1285          SMB_VFS_LAYER_OPAQUE},
1286         {SMB_VFS_OP(vfswrap_listxattr), SMB_VFS_OP_LISTXATTR,
1287          SMB_VFS_LAYER_OPAQUE},
1288         {SMB_VFS_OP(vfswrap_llistxattr),        SMB_VFS_OP_LLISTXATTR,
1289          SMB_VFS_LAYER_OPAQUE},
1290         {SMB_VFS_OP(vfswrap_flistxattr),        SMB_VFS_OP_FLISTXATTR,
1291          SMB_VFS_LAYER_OPAQUE},
1292         {SMB_VFS_OP(vfswrap_removexattr),       SMB_VFS_OP_REMOVEXATTR,
1293          SMB_VFS_LAYER_OPAQUE},
1294         {SMB_VFS_OP(vfswrap_lremovexattr),      SMB_VFS_OP_LREMOVEXATTR,
1295          SMB_VFS_LAYER_OPAQUE},
1296         {SMB_VFS_OP(vfswrap_fremovexattr),      SMB_VFS_OP_FREMOVEXATTR,
1297          SMB_VFS_LAYER_OPAQUE},
1298         {SMB_VFS_OP(vfswrap_setxattr),  SMB_VFS_OP_SETXATTR,
1299          SMB_VFS_LAYER_OPAQUE},
1300         {SMB_VFS_OP(vfswrap_lsetxattr), SMB_VFS_OP_LSETXATTR,
1301          SMB_VFS_LAYER_OPAQUE},
1302         {SMB_VFS_OP(vfswrap_fsetxattr), SMB_VFS_OP_FSETXATTR,
1303          SMB_VFS_LAYER_OPAQUE},
1304
1305         {SMB_VFS_OP(vfswrap_aio_read),  SMB_VFS_OP_AIO_READ,
1306          SMB_VFS_LAYER_OPAQUE},
1307         {SMB_VFS_OP(vfswrap_aio_write), SMB_VFS_OP_AIO_WRITE,
1308          SMB_VFS_LAYER_OPAQUE},
1309         {SMB_VFS_OP(vfswrap_aio_return),        SMB_VFS_OP_AIO_RETURN,
1310          SMB_VFS_LAYER_OPAQUE},
1311         {SMB_VFS_OP(vfswrap_aio_cancel), SMB_VFS_OP_AIO_CANCEL,
1312          SMB_VFS_LAYER_OPAQUE},
1313         {SMB_VFS_OP(vfswrap_aio_error), SMB_VFS_OP_AIO_ERROR,
1314          SMB_VFS_LAYER_OPAQUE},
1315         {SMB_VFS_OP(vfswrap_aio_fsync), SMB_VFS_OP_AIO_FSYNC,
1316          SMB_VFS_LAYER_OPAQUE},
1317         {SMB_VFS_OP(vfswrap_aio_suspend),SMB_VFS_OP_AIO_SUSPEND,
1318          SMB_VFS_LAYER_OPAQUE},
1319
1320         /* Finish VFS operations definition */
1321
1322         {SMB_VFS_OP(NULL),              SMB_VFS_OP_NOOP,
1323          SMB_VFS_LAYER_NOOP}
1324 };
1325
1326 NTSTATUS vfs_default_init(void)
1327 {
1328         unsigned int needed = SMB_VFS_OP_LAST + 1; /* convert from index to count */
1329
1330         if (ARRAY_SIZE(vfs_default_ops) != needed) {
1331                 DEBUG(0, ("%s: %u ops registered, but %u ops are required\n",
1332                         DEFAULT_VFS_MODULE_NAME, (unsigned int)ARRAY_SIZE(vfs_default_ops), needed));
1333                 smb_panic("operation(s) missing from default VFS module");
1334         }
1335
1336         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
1337                                 DEFAULT_VFS_MODULE_NAME, vfs_default_ops);
1338 }