source/modules/vfs_default.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Wrap disk only vfs functions to sidestep dodgy compilers.
   4    Copyright (C) Tim Potter 1998
   5    Copyright (C) Jeremy Allison 2007
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22 #include "includes.h"
  23
  24 #undef DBGC_CLASS
  25 #define DBGC_CLASS DBGC_VFS
  26
  27 /* Check for NULL pointer parameters in vfswrap_* functions */
  28
  29 /* We don't want to have NULL function pointers lying around.  Someone
  30    is sure to try and execute them.  These stubs are used to prevent
  31    this possibility. */
  32
  33 static int vfswrap_connect(vfs_handle_struct *handle,  const char *service, const char *user)
  34 {
  35     return 0;    /* Return >= 0 for success */
  36 }
  37
  38 static void vfswrap_disconnect(vfs_handle_struct *handle)
  39 {
  40 }
  41
  42 /* Disk operations */
  43
  44 static SMB_BIG_UINT vfswrap_disk_free(vfs_handle_struct *handle,  const char *path, BOOL small_query, SMB_BIG_UINT *bsize,
  45                                SMB_BIG_UINT *dfree, SMB_BIG_UINT *dsize)
  46 {
  47         SMB_BIG_UINT result;
  48
  49         result = sys_disk_free(handle->conn, path, small_query, bsize, dfree, dsize);
  50         return result;
  51 }
  52
  53 static int vfswrap_get_quota(struct vfs_handle_struct *handle,  enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
  54 {
  55 #ifdef HAVE_SYS_QUOTAS
  56         int result;
  57
  58         START_PROFILE(syscall_get_quota);
  59         result = sys_get_quota(handle->conn->connectpath, qtype, id, qt);
  60         END_PROFILE(syscall_get_quota);
  61         return result;
  62 #else
  63         errno = ENOSYS;
  64         return -1;
  65 #endif
  66 }
  67
  68 static int vfswrap_set_quota(struct vfs_handle_struct *handle,  enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
  69 {
  70 #ifdef HAVE_SYS_QUOTAS
  71         int result;
  72
  73         START_PROFILE(syscall_set_quota);
  74         result = sys_set_quota(handle->conn->connectpath, qtype, id, qt);
  75         END_PROFILE(syscall_set_quota);
  76         return result;
  77 #else
  78         errno = ENOSYS;
  79         return -1;
  80 #endif
  81 }
  82
  83 static int vfswrap_get_shadow_copy_data(struct vfs_handle_struct *handle, struct files_struct *fsp, SHADOW_COPY_DATA *shadow_copy_data, BOOL labels)
  84 {
  85         errno = ENOSYS;
  86         return -1;  /* Not implemented. */
  87 }
  88
  89 static int vfswrap_statvfs(struct vfs_handle_struct *handle,  const char *path, vfs_statvfs_struct *statbuf)
  90 {
  91         return sys_statvfs(path, statbuf);
  92 }
  93
  94 /* Directory operations */
  95
  96 static SMB_STRUCT_DIR *vfswrap_opendir(vfs_handle_struct *handle,  const char *fname, const char *mask, uint32 attr)
  97 {
  98         SMB_STRUCT_DIR *result;
  99
 100         START_PROFILE(syscall_opendir);
 101         result = sys_opendir(fname);
 102         END_PROFILE(syscall_opendir);
 103         return result;
 104 }
 105
 106 static SMB_STRUCT_DIRENT *vfswrap_readdir(vfs_handle_struct *handle,  SMB_STRUCT_DIR *dirp)
 107 {
 108         SMB_STRUCT_DIRENT *result;
 109
 110         START_PROFILE(syscall_readdir);
 111         result = sys_readdir(dirp);
 112         END_PROFILE(syscall_readdir);
 113         return result;
 114 }
 115
 116 static void vfswrap_seekdir(vfs_handle_struct *handle,  SMB_STRUCT_DIR *dirp, long offset)
 117 {
 118         START_PROFILE(syscall_seekdir);
 119         sys_seekdir(dirp, offset);
 120         END_PROFILE(syscall_seekdir);
 121 }
 122
 123 static long vfswrap_telldir(vfs_handle_struct *handle,  SMB_STRUCT_DIR *dirp)
 124 {
 125         long result;
 126         START_PROFILE(syscall_telldir);
 127         result = sys_telldir(dirp);
 128         END_PROFILE(syscall_telldir);
 129         return result;
 130 }
 131
 132 static void vfswrap_rewinddir(vfs_handle_struct *handle,  SMB_STRUCT_DIR *dirp)
 133 {
 134         START_PROFILE(syscall_rewinddir);
 135         sys_rewinddir(dirp);
 136         END_PROFILE(syscall_rewinddir);
 137 }
 138
 139 static int vfswrap_mkdir(vfs_handle_struct *handle,  const char *path, mode_t mode)
 140 {
 141         int result;
 142         BOOL has_dacl = False;
 143
 144         START_PROFILE(syscall_mkdir);
 145
 146         if (lp_inherit_acls(SNUM(handle->conn)) && (has_dacl = directory_has_default_acl(handle->conn, parent_dirname(path))))
 147                 mode = 0777;
 148
 149         result = mkdir(path, mode);
 150
 151         if (result == 0 && !has_dacl) {
 152                 /*
 153                  * We need to do this as the default behavior of POSIX ACLs
 154                  * is to set the mask to be the requested group permission
 155                  * bits, not the group permission bits to be the requested
 156                  * group permission bits. This is not what we want, as it will
 157                  * mess up any inherited ACL bits that were set. JRA.
 158                  */
 159                 int saved_errno = errno; /* We may get ENOSYS */
 160                 if ((SMB_VFS_CHMOD_ACL(handle->conn, path, mode) == -1) && (errno == ENOSYS))
 161                         errno = saved_errno;
 162         }
 163
 164         END_PROFILE(syscall_mkdir);
 165         return result;
 166 }
 167
 168 static int vfswrap_rmdir(vfs_handle_struct *handle,  const char *path)
 169 {
 170         int result;
 171
 172         START_PROFILE(syscall_rmdir);
 173         result = rmdir(path);
 174         END_PROFILE(syscall_rmdir);
 175         return result;
 176 }
 177
 178 static int vfswrap_closedir(vfs_handle_struct *handle,  SMB_STRUCT_DIR *dirp)
 179 {
 180         int result;
 181
 182         START_PROFILE(syscall_closedir);
 183         result = sys_closedir(dirp);
 184         END_PROFILE(syscall_closedir);
 185         return result;
 186 }
 187
 188 /* File operations */
 189
 190 static int vfswrap_open(vfs_handle_struct *handle,  const char *fname,
 191         files_struct *fsp, int flags, mode_t mode)
 192 {
 193         int result;
 194
 195         START_PROFILE(syscall_open);
 196         result = sys_open(fname, flags, mode);
 197         END_PROFILE(syscall_open);
 198         return result;
 199 }
 200
 201 static int vfswrap_close(vfs_handle_struct *handle, files_struct *fsp, int fd)
 202 {
 203         int result;
 204
 205         START_PROFILE(syscall_close);
 206
 207         result = close(fd);
 208         END_PROFILE(syscall_close);
 209         return result;
 210 }
 211
 212 static ssize_t vfswrap_read(vfs_handle_struct *handle, files_struct *fsp, int fd, void *data, size_t n)
 213 {
 214         ssize_t result;
 215
 216         START_PROFILE_BYTES(syscall_read, n);
 217         result = sys_read(fd, data, n);
 218         END_PROFILE(syscall_read);
 219         return result;
 220 }
 221
 222 static ssize_t vfswrap_pread(vfs_handle_struct *handle, files_struct *fsp, int fd, void *data,
 223                         size_t n, SMB_OFF_T offset)
 224 {
 225         ssize_t result;
 226
 227 #if defined(HAVE_PREAD) || defined(HAVE_PREAD64)
 228         START_PROFILE_BYTES(syscall_pread, n);
 229         result = sys_pread(fd, data, n, offset);
 230         END_PROFILE(syscall_pread);
 231
 232         if (result == -1 && errno == ESPIPE) {
 233                 /* Maintain the fiction that pipes can be seeked (sought?) on. */
 234                 result = SMB_VFS_READ(fsp, fd, data, n);
 235                 fsp->fh->pos = 0;
 236         }
 237
 238 #else /* HAVE_PREAD */
 239         SMB_OFF_T   curr;
 240         int lerrno;
 241
 242         curr = SMB_VFS_LSEEK(fsp, fd, 0, SEEK_CUR);
 243         if (curr == -1 && errno == ESPIPE) {
 244                 /* Maintain the fiction that pipes can be seeked (sought?) on. */
 245                 result = SMB_VFS_READ(fsp, fd, data, n);
 246                 fsp->fh->pos = 0;
 247                 return result;
 248         }
 249
 250         if (SMB_VFS_LSEEK(fsp, fd, offset, SEEK_SET) == -1) {
 251                 return -1;
 252         }
 253
 254         errno = 0;
 255         result = SMB_VFS_READ(fsp, fd, data, n);
 256         lerrno = errno;
 257
 258         SMB_VFS_LSEEK(fsp, fd, curr, SEEK_SET);
 259         errno = lerrno;
 260
 261 #endif /* HAVE_PREAD */
 262
 263         return result;
 264 }
 265
 266 static ssize_t vfswrap_write(vfs_handle_struct *handle, files_struct *fsp, int fd, const void *data, size_t n)
 267 {
 268         ssize_t result;
 269
 270         START_PROFILE_BYTES(syscall_write, n);
 271         result = sys_write(fd, data, n);
 272         END_PROFILE(syscall_write);
 273         return result;
 274 }
 275
 276 static ssize_t vfswrap_pwrite(vfs_handle_struct *handle, files_struct *fsp, int fd, const void *data,
 277                         size_t n, SMB_OFF_T offset)
 278 {
 279         ssize_t result;
 280
 281 #if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
 282         START_PROFILE_BYTES(syscall_pwrite, n);
 283         result = sys_pwrite(fd, data, n, offset);
 284         END_PROFILE(syscall_pwrite);
 285
 286         if (result == -1 && errno == ESPIPE) {
 287                 /* Maintain the fiction that pipes can be sought on. */
 288                 result = SMB_VFS_WRITE(fsp, fd, data, n);
 289         }
 290
 291 #else /* HAVE_PWRITE */
 292         SMB_OFF_T   curr;
 293         int         lerrno;
 294
 295         curr = SMB_VFS_LSEEK(fsp, fd, 0, SEEK_CUR);
 296         if (curr == -1) {
 297                 return -1;
 298         }
 299
 300         if (SMB_VFS_LSEEK(fsp, fd, offset, SEEK_SET) == -1) {
 301                 return -1;
 302         }
 303
 304         result = SMB_VFS_WRITE(fsp, fd, data, n);
 305         lerrno = errno;
 306
 307         SMB_VFS_LSEEK(fsp, fd, curr, SEEK_SET);
 308         errno = lerrno;
 309
 310 #endif /* HAVE_PWRITE */
 311
 312         return result;
 313 }
 314
 315 static SMB_OFF_T vfswrap_lseek(vfs_handle_struct *handle, files_struct *fsp, int filedes, SMB_OFF_T offset, int whence)
 316 {
 317         SMB_OFF_T result = 0;
 318
 319         START_PROFILE(syscall_lseek);
 320
 321         /* Cope with 'stat' file opens. */
 322         if (filedes != -1)
 323                 result = sys_lseek(filedes, offset, whence);
 324
 325         /*
 326          * We want to maintain the fiction that we can seek
 327          * on a fifo for file system purposes. This allows
 328          * people to set up UNIX fifo's that feed data to Windows
 329          * applications. JRA.
 330          */
 331
 332         if((result == -1) && (errno == ESPIPE)) {
 333                 result = 0;
 334                 errno = 0;
 335         }
 336
 337         END_PROFILE(syscall_lseek);
 338         return result;
 339 }
 340
 341 static ssize_t vfswrap_sendfile(vfs_handle_struct *handle, int tofd, files_struct *fsp, int fromfd, const DATA_BLOB *hdr,
 342                         SMB_OFF_T offset, size_t n)
 343 {
 344         ssize_t result;
 345
 346         START_PROFILE_BYTES(syscall_sendfile, n);
 347         result = sys_sendfile(tofd, fromfd, hdr, offset, n);
 348         END_PROFILE(syscall_sendfile);
 349         return result;
 350 }
 351
 352 /*********************************************************
 353  For rename across filesystems Patch from Warren Birnbaum
 354  <warrenb@hpcvscdp.cv.hp.com>
 355 **********************************************************/
 356
 357 static int copy_reg(const char *source, const char *dest)
 358 {
 359         SMB_STRUCT_STAT source_stats;
 360         int saved_errno;
 361         int ifd = -1;
 362         int ofd = -1;
 363
 364         if (sys_lstat (source, &source_stats) == -1)
 365                 return -1;
 366
 367         if (!S_ISREG (source_stats.st_mode))
 368                 return -1;
 369
 370         if((ifd = sys_open (source, O_RDONLY, 0)) < 0)
 371                 return -1;
 372
 373         if (unlink (dest) && errno != ENOENT)
 374                 return -1;
 375
 376 #ifdef O_NOFOLLOW
 377         if((ofd = sys_open (dest, O_WRONLY | O_CREAT | O_TRUNC | O_NOFOLLOW, 0600)) < 0 )
 378 #else
 379         if((ofd = sys_open (dest, O_WRONLY | O_CREAT | O_TRUNC , 0600)) < 0 )
 380 #endif
 381                 goto err;
 382
 383         if (transfer_file(ifd, ofd, (size_t)-1) == -1)
 384                 goto err;
 385
 386         /*
 387          * Try to preserve ownership.  For non-root it might fail, but that's ok.
 388          * But root probably wants to know, e.g. if NFS disallows it.
 389          */
 390
 391 #ifdef HAVE_FCHOWN
 392         if ((fchown(ofd, source_stats.st_uid, source_stats.st_gid) == -1) && (errno != EPERM))
 393 #else
 394         if ((chown(dest, source_stats.st_uid, source_stats.st_gid) == -1) && (errno != EPERM))
 395 #endif
 396                 goto err;
 397
 398         /*
 399          * fchown turns off set[ug]id bits for non-root,
 400          * so do the chmod last.
 401          */
 402
 403 #if defined(HAVE_FCHMOD)
 404         if (fchmod (ofd, source_stats.st_mode & 07777))
 405 #else
 406         if (chmod (dest, source_stats.st_mode & 07777))
 407 #endif
 408                 goto err;
 409
 410         if (close (ifd) == -1)
 411                 goto err;
 412
 413         if (close (ofd) == -1)
 414                 return -1;
 415
 416         /* Try to copy the old file's modtime and access time.  */
 417         {
 418                 struct utimbuf tv;
 419
 420                 tv.actime = source_stats.st_atime;
 421                 tv.modtime = source_stats.st_mtime;
 422                 utime(dest, &tv);
 423         }
 424
 425         if (unlink (source) == -1)
 426                 return -1;
 427
 428         return 0;
 429
 430   err:
 431
 432         saved_errno = errno;
 433         if (ifd != -1)
 434                 close(ifd);
 435         if (ofd != -1)
 436                 close(ofd);
 437         errno = saved_errno;
 438         return -1;
 439 }
 440
 441 static int vfswrap_rename(vfs_handle_struct *handle,  const char *oldname, const char *newname)
 442 {
 443         int result;
 444
 445         START_PROFILE(syscall_rename);
 446         result = rename(oldname, newname);
 447         if (errno == EXDEV) {
 448                 /* Rename across filesystems needed. */
 449                 result = copy_reg(oldname, newname);
 450         }
 451
 452         END_PROFILE(syscall_rename);
 453         return result;
 454 }
 455
 456 static int vfswrap_fsync(vfs_handle_struct *handle, files_struct *fsp, int fd)
 457 {
 458 #ifdef HAVE_FSYNC
 459         int result;
 460
 461         START_PROFILE(syscall_fsync);
 462         result = fsync(fd);
 463         END_PROFILE(syscall_fsync);
 464         return result;
 465 #else
 466         return 0;
 467 #endif
 468 }
 469
 470 static int vfswrap_stat(vfs_handle_struct *handle,  const char *fname, SMB_STRUCT_STAT *sbuf)
 471 {
 472         int result;
 473
 474         START_PROFILE(syscall_stat);
 475         result = sys_stat(fname, sbuf);
 476         END_PROFILE(syscall_stat);
 477         return result;
 478 }
 479
 480 static int vfswrap_fstat(vfs_handle_struct *handle, files_struct *fsp, int fd, SMB_STRUCT_STAT *sbuf)
 481 {
 482         int result;
 483
 484         START_PROFILE(syscall_fstat);
 485         result = sys_fstat(fd, sbuf);
 486         END_PROFILE(syscall_fstat);
 487         return result;
 488 }
 489
 490 int vfswrap_lstat(vfs_handle_struct *handle,  const char *path, SMB_STRUCT_STAT *sbuf)
 491 {
 492         int result;
 493
 494         START_PROFILE(syscall_lstat);
 495         result = sys_lstat(path, sbuf);
 496         END_PROFILE(syscall_lstat);
 497         return result;
 498 }
 499
 500 static int vfswrap_unlink(vfs_handle_struct *handle,  const char *path)
 501 {
 502         int result;
 503
 504         START_PROFILE(syscall_unlink);
 505         result = unlink(path);
 506         END_PROFILE(syscall_unlink);
 507         return result;
 508 }
 509
 510 static int vfswrap_chmod(vfs_handle_struct *handle,  const char *path, mode_t mode)
 511 {
 512         int result;
 513
 514         START_PROFILE(syscall_chmod);
 515
 516         /*
 517          * We need to do this due to the fact that the default POSIX ACL
 518          * chmod modifies the ACL *mask* for the group owner, not the
 519          * group owner bits directly. JRA.
 520          */
 521
 522
 523         {
 524                 int saved_errno = errno; /* We might get ENOSYS */
 525                 if ((result = SMB_VFS_CHMOD_ACL(handle->conn, path, mode)) == 0) {
 526                         END_PROFILE(syscall_chmod);
 527                         return result;
 528                 }
 529                 /* Error - return the old errno. */
 530                 errno = saved_errno;
 531         }
 532
 533         result = chmod(path, mode);
 534         END_PROFILE(syscall_chmod);
 535         return result;
 536 }
 537
 538 static int vfswrap_fchmod(vfs_handle_struct *handle, files_struct *fsp, int fd, mode_t mode)
 539 {
 540         int result;
 541
 542         START_PROFILE(syscall_fchmod);
 543
 544         /*
 545          * We need to do this due to the fact that the default POSIX ACL
 546          * chmod modifies the ACL *mask* for the group owner, not the
 547          * group owner bits directly. JRA.
 548          */
 549
 550         {
 551                 int saved_errno = errno; /* We might get ENOSYS */
 552                 if ((result = SMB_VFS_FCHMOD_ACL(fsp, fd, mode)) == 0) {
 553                         END_PROFILE(syscall_fchmod);
 554                         return result;
 555                 }
 556                 /* Error - return the old errno. */
 557                 errno = saved_errno;
 558         }
 559
 560 #if defined(HAVE_FCHMOD)
 561         result = fchmod(fd, mode);
 562 #else
 563         result = -1;
 564         errno = ENOSYS;
 565 #endif
 566
 567         END_PROFILE(syscall_fchmod);
 568         return result;
 569 }
 570
 571 static int vfswrap_chown(vfs_handle_struct *handle,  const char *path, uid_t uid, gid_t gid)
 572 {
 573         int result;
 574
 575         START_PROFILE(syscall_chown);
 576         result = sys_chown(path, uid, gid);
 577         END_PROFILE(syscall_chown);
 578         return result;
 579 }
 580
 581 static int vfswrap_fchown(vfs_handle_struct *handle, files_struct *fsp, int fd, uid_t uid, gid_t gid)
 582 {
 583 #ifdef HAVE_FCHOWN
 584         int result;
 585
 586         START_PROFILE(syscall_fchown);
 587         result = fchown(fd, uid, gid);
 588         END_PROFILE(syscall_fchown);
 589         return result;
 590 #else
 591         errno = ENOSYS;
 592         return -1;
 593 #endif
 594 }
 595
 596 static int vfswrap_chdir(vfs_handle_struct *handle,  const char *path)
 597 {
 598         int result;
 599
 600         START_PROFILE(syscall_chdir);
 601         result = chdir(path);
 602         END_PROFILE(syscall_chdir);
 603         return result;
 604 }
 605
 606 static char *vfswrap_getwd(vfs_handle_struct *handle,  char *path)
 607 {
 608         char *result;
 609
 610         START_PROFILE(syscall_getwd);
 611         result = sys_getwd(path);
 612         END_PROFILE(syscall_getwd);
 613         return result;
 614 }
 615
 616 /*********************************************************************
 617  nsec timestamp resolution call. Convert down to whatever the underlying
 618  system will support.
 619 **********************************************************************/
 620
 621 static int vfswrap_ntimes(vfs_handle_struct *handle, const char *path, const struct timespec ts[2])
 622 {
 623         int result;
 624
 625         START_PROFILE(syscall_ntimes);
 626 #if defined(HAVE_UTIMES)
 627         {
 628                 struct timeval tv[2];
 629                 tv[0] = convert_timespec_to_timeval(ts[0]);
 630                 tv[1] = convert_timespec_to_timeval(ts[1]);
 631                 result = utimes(path, tv);
 632         }
 633 #elif defined(HAVE_UTIME)
 634         {
 635                 struct utimbuf times;
 636                 times.actime = convert_timespec_to_time_t(ts[0]);
 637                 times.modtime = convert_timespec_to_time_t(ts[1]);
 638                 result = utime(path, times);
 639         }
 640 #else
 641         errno = ENOSYS;
 642         result = -1;
 643 #endif
 644         END_PROFILE(syscall_ntimes);
 645         return result;
 646 }
 647
 648 /*********************************************************************
 649  A version of ftruncate that will write the space on disk if strict
 650  allocate is set.
 651 **********************************************************************/
 652
 653 static int strict_allocate_ftruncate(vfs_handle_struct *handle, files_struct *fsp, int fd, SMB_OFF_T len)
 654 {
 655         SMB_STRUCT_STAT st;
 656         SMB_OFF_T currpos = SMB_VFS_LSEEK(fsp, fd, 0, SEEK_CUR);
 657         unsigned char zero_space[4096];
 658         SMB_OFF_T space_to_write;
 659
 660         if (currpos == -1)
 661                 return -1;
 662
 663         if (SMB_VFS_FSTAT(fsp, fd, &st) == -1)
 664                 return -1;
 665
 666         space_to_write = len - st.st_size;
 667
 668 #ifdef S_ISFIFO
 669         if (S_ISFIFO(st.st_mode))
 670                 return 0;
 671 #endif
 672
 673         if (st.st_size == len)
 674                 return 0;
 675
 676         /* Shrink - just ftruncate. */
 677         if (st.st_size > len)
 678                 return sys_ftruncate(fd, len);
 679
 680         /* Write out the real space on disk. */
 681         if (SMB_VFS_LSEEK(fsp, fd, st.st_size, SEEK_SET) != st.st_size)
 682                 return -1;
 683
 684         space_to_write = len - st.st_size;
 685
 686         memset(zero_space, '\0', sizeof(zero_space));
 687         while ( space_to_write > 0) {
 688                 SMB_OFF_T retlen;
 689                 SMB_OFF_T current_len_to_write = MIN(sizeof(zero_space),space_to_write);
 690
 691                 retlen = SMB_VFS_WRITE(fsp,fsp->fh->fd,(char *)zero_space,current_len_to_write);
 692                 if (retlen <= 0)
 693                         return -1;
 694
 695                 space_to_write -= retlen;
 696         }
 697
 698         /* Seek to where we were */
 699         if (SMB_VFS_LSEEK(fsp, fd, currpos, SEEK_SET) != currpos)
 700                 return -1;
 701
 702         return 0;
 703 }
 704
 705 static int vfswrap_ftruncate(vfs_handle_struct *handle, files_struct *fsp, int fd, SMB_OFF_T len)
 706 {
 707         int result = -1;
 708         SMB_STRUCT_STAT st;
 709         char c = 0;
 710         SMB_OFF_T currpos;
 711
 712         START_PROFILE(syscall_ftruncate);
 713
 714         if (lp_strict_allocate(SNUM(fsp->conn))) {
 715                 result = strict_allocate_ftruncate(handle, fsp, fd, len);
 716                 END_PROFILE(syscall_ftruncate);
 717                 return result;
 718         }
 719
 720         /* we used to just check HAVE_FTRUNCATE_EXTEND and only use
 721            sys_ftruncate if the system supports it. Then I discovered that
 722            you can have some filesystems that support ftruncate
 723            expansion and some that don't! On Linux fat can't do
 724            ftruncate extend but ext2 can. */
 725
 726         result = sys_ftruncate(fd, len);
 727         if (result == 0)
 728                 goto done;
 729
 730         /* According to W. R. Stevens advanced UNIX prog. Pure 4.3 BSD cannot
 731            extend a file with ftruncate. Provide alternate implementation
 732            for this */
 733         currpos = SMB_VFS_LSEEK(fsp, fd, 0, SEEK_CUR);
 734         if (currpos == -1) {
 735                 goto done;
 736         }
 737
 738         /* Do an fstat to see if the file is longer than the requested
 739            size in which case the ftruncate above should have
 740            succeeded or shorter, in which case seek to len - 1 and
 741            write 1 byte of zero */
 742         if (SMB_VFS_FSTAT(fsp, fd, &st) == -1) {
 743                 goto done;
 744         }
 745
 746 #ifdef S_ISFIFO
 747         if (S_ISFIFO(st.st_mode)) {
 748                 result = 0;
 749                 goto done;
 750         }
 751 #endif
 752
 753         if (st.st_size == len) {
 754                 result = 0;
 755                 goto done;
 756         }
 757
 758         if (st.st_size > len) {
 759                 /* the sys_ftruncate should have worked */
 760                 goto done;
 761         }
 762
 763         if (SMB_VFS_LSEEK(fsp, fd, len-1, SEEK_SET) != len -1)
 764                 goto done;
 765
 766         if (SMB_VFS_WRITE(fsp, fd, &c, 1)!=1)
 767                 goto done;
 768
 769         /* Seek to where we were */
 770         if (SMB_VFS_LSEEK(fsp, fd, currpos, SEEK_SET) != currpos)
 771                 goto done;
 772         result = 0;
 773
 774   done:
 775
 776         END_PROFILE(syscall_ftruncate);
 777         return result;
 778 }
 779
 780 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)
 781 {
 782         BOOL result;
 783
 784         START_PROFILE(syscall_fcntl_lock);
 785         result =  fcntl_lock(fd, op, offset, count, type);
 786         END_PROFILE(syscall_fcntl_lock);
 787         return result;
 788 }
 789
 790 static int vfswrap_kernel_flock(vfs_handle_struct *handle, files_struct *fsp, int fd,
 791                                 uint32 share_mode)
 792 {
 793         START_PROFILE(syscall_kernel_flock);
 794         kernel_flock(fd, share_mode);
 795         END_PROFILE(syscall_kernel_flock);
 796         return 0;
 797 }
 798
 799 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)
 800 {
 801         BOOL result;
 802
 803         START_PROFILE(syscall_fcntl_getlock);
 804         result =  fcntl_getlock(fd, poffset, pcount, ptype, ppid);
 805         END_PROFILE(syscall_fcntl_getlock);
 806         return result;
 807 }
 808
 809 static int vfswrap_linux_setlease(vfs_handle_struct *handle, files_struct *fsp, int fd,
 810                                 int leasetype)
 811 {
 812         int result = -1;
 813
 814         START_PROFILE(syscall_linux_setlease);
 815
 816 #ifdef LINUX
 817         /* first set the signal handler */
 818         if(linux_set_lease_sighandler(fd) == -1)
 819                 return -1;
 820
 821         result = linux_setlease(fd, leasetype);
 822 #else
 823         errno = ENOSYS;
 824 #endif
 825         END_PROFILE(syscall_linux_setlease);
 826         return result;
 827 }
 828
 829 static int vfswrap_symlink(vfs_handle_struct *handle,  const char *oldpath, const char *newpath)
 830 {
 831         int result;
 832
 833         START_PROFILE(syscall_symlink);
 834         result = sys_symlink(oldpath, newpath);
 835         END_PROFILE(syscall_symlink);
 836         return result;
 837 }
 838
 839 static int vfswrap_readlink(vfs_handle_struct *handle,  const char *path, char *buf, size_t bufsiz)
 840 {
 841         int result;
 842
 843         START_PROFILE(syscall_readlink);
 844         result = sys_readlink(path, buf, bufsiz);
 845         END_PROFILE(syscall_readlink);
 846         return result;
 847 }
 848
 849 static int vfswrap_link(vfs_handle_struct *handle,  const char *oldpath, const char *newpath)
 850 {
 851         int result;
 852
 853         START_PROFILE(syscall_link);
 854         result = sys_link(oldpath, newpath);
 855         END_PROFILE(syscall_link);
 856         return result;
 857 }
 858
 859 static int vfswrap_mknod(vfs_handle_struct *handle,  const char *pathname, mode_t mode, SMB_DEV_T dev)
 860 {
 861         int result;
 862
 863         START_PROFILE(syscall_mknod);
 864         result = sys_mknod(pathname, mode, dev);
 865         END_PROFILE(syscall_mknod);
 866         return result;
 867 }
 868
 869 static char *vfswrap_realpath(vfs_handle_struct *handle,  const char *path, char *resolved_path)
 870 {
 871         char *result;
 872
 873         START_PROFILE(syscall_realpath);
 874         result = sys_realpath(path, resolved_path);
 875         END_PROFILE(syscall_realpath);
 876         return result;
 877 }
 878
 879 static NTSTATUS vfswrap_notify_watch(vfs_handle_struct *vfs_handle,
 880                                      struct sys_notify_context *ctx,
 881                                      struct notify_entry *e,
 882                                      void (*callback)(struct sys_notify_context *ctx,
 883                                                       void *private_data,
 884                                                       struct notify_event *ev),
 885                                      void *private_data, void *handle)
 886 {
 887         /*
 888          * So far inotify is the only supported default notify mechanism. If
 889          * another platform like the the BSD's or a proprietary Unix comes
 890          * along and wants another default, we can play the same trick we
 891          * played with Posix ACLs.
 892          *
 893          * Until that is the case, hard-code inotify here.
 894          */
 895 #ifdef HAVE_INOTIFY
 896         if (lp_kernel_change_notify(ctx->conn->params)) {
 897                 return inotify_watch(ctx, e, callback, private_data, handle);
 898         }
 899 #endif
 900         /*
 901          * Do nothing, leave everything to notify_internal.c
 902          */
 903         return NT_STATUS_OK;
 904 }
 905
 906 static int vfswrap_chflags(vfs_handle_struct *handle, const char *path, int flags)
 907 {
 908 #ifdef HAVE_CHFLAGS
 909         return chflags(path, flags);
 910 #else
 911         errno = ENOSYS;
 912         return -1;
 913 #endif
 914 }
 915
 916 static size_t vfswrap_fget_nt_acl(vfs_handle_struct *handle, files_struct *fsp, int fd, uint32 security_info, SEC_DESC **ppdesc)
 917 {
 918         size_t result;
 919
 920         START_PROFILE(fget_nt_acl);
 921         result = get_nt_acl(fsp, security_info, ppdesc);
 922         END_PROFILE(fget_nt_acl);
 923         return result;
 924 }
 925
 926 static size_t vfswrap_get_nt_acl(vfs_handle_struct *handle, files_struct *fsp, const char *name, uint32 security_info, SEC_DESC **ppdesc)
 927 {
 928         size_t result;
 929
 930         START_PROFILE(get_nt_acl);
 931         result = get_nt_acl(fsp, security_info, ppdesc);
 932         END_PROFILE(get_nt_acl);
 933         return result;
 934 }
 935
 936 static BOOL vfswrap_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, int fd, uint32 security_info_sent, SEC_DESC *psd)
 937 {
 938         BOOL result;
 939
 940         START_PROFILE(fset_nt_acl);
 941         result = set_nt_acl(fsp, security_info_sent, psd);
 942         END_PROFILE(fset_nt_acl);
 943         return result;
 944 }
 945
 946 static BOOL vfswrap_set_nt_acl(vfs_handle_struct *handle, files_struct *fsp, const char *name, uint32 security_info_sent, SEC_DESC *psd)
 947 {
 948         BOOL result;
 949
 950         START_PROFILE(set_nt_acl);
 951         result = set_nt_acl(fsp, security_info_sent, psd);
 952         END_PROFILE(set_nt_acl);
 953         return result;
 954 }
 955
 956 static int vfswrap_chmod_acl(vfs_handle_struct *handle,  const char *name, mode_t mode)
 957 {
 958 #ifdef HAVE_NO_ACL
 959         errno = ENOSYS;
 960         return -1;
 961 #else
 962         int result;
 963
 964         START_PROFILE(chmod_acl);
 965         result = chmod_acl(handle->conn, name, mode);
 966         END_PROFILE(chmod_acl);
 967         return result;
 968 #endif
 969 }
 970
 971 static int vfswrap_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, int fd, mode_t mode)
 972 {
 973 #ifdef HAVE_NO_ACL
 974         errno = ENOSYS;
 975         return -1;
 976 #else
 977         int result;
 978
 979         START_PROFILE(fchmod_acl);
 980         result = fchmod_acl(fsp, fd, mode);
 981         END_PROFILE(fchmod_acl);
 982         return result;
 983 #endif
 984 }
 985
 986 static int vfswrap_sys_acl_get_entry(vfs_handle_struct *handle,  SMB_ACL_T theacl, int entry_id, SMB_ACL_ENTRY_T *entry_p)
 987 {
 988         return sys_acl_get_entry(theacl, entry_id, entry_p);
 989 }
 990
 991 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)
 992 {
 993         return sys_acl_get_tag_type(entry_d, tag_type_p);
 994 }
 995
 996 static int vfswrap_sys_acl_get_permset(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry_d, SMB_ACL_PERMSET_T *permset_p)
 997 {
 998         return sys_acl_get_permset(entry_d, permset_p);
 999 }
1000
1001 static void * vfswrap_sys_acl_get_qualifier(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry_d)
1002 {
1003         return sys_acl_get_qualifier(entry_d);
1004 }
1005
1006 static SMB_ACL_T vfswrap_sys_acl_get_file(vfs_handle_struct *handle,  const char *path_p, SMB_ACL_TYPE_T type)
1007 {
1008         return sys_acl_get_file(handle, path_p, type);
1009 }
1010
1011 static SMB_ACL_T vfswrap_sys_acl_get_fd(vfs_handle_struct *handle, files_struct *fsp, int fd)
1012 {
1013         return sys_acl_get_fd(handle, fsp, fd);
1014 }
1015
1016 static int vfswrap_sys_acl_clear_perms(vfs_handle_struct *handle,  SMB_ACL_PERMSET_T permset)
1017 {
1018         return sys_acl_clear_perms(permset);
1019 }
1020
1021 static int vfswrap_sys_acl_add_perm(vfs_handle_struct *handle,  SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm)
1022 {
1023         return sys_acl_add_perm(permset, perm);
1024 }
1025
1026 static char * vfswrap_sys_acl_to_text(vfs_handle_struct *handle,  SMB_ACL_T theacl, ssize_t *plen)
1027 {
1028         return sys_acl_to_text(theacl, plen);
1029 }
1030
1031 static SMB_ACL_T vfswrap_sys_acl_init(vfs_handle_struct *handle,  int count)
1032 {
1033         return sys_acl_init(count);
1034 }
1035
1036 static int vfswrap_sys_acl_create_entry(vfs_handle_struct *handle,  SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry)
1037 {
1038         return sys_acl_create_entry(pacl, pentry);
1039 }
1040
1041 static int vfswrap_sys_acl_set_tag_type(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry, SMB_ACL_TAG_T tagtype)
1042 {
1043         return sys_acl_set_tag_type(entry, tagtype);
1044 }
1045
1046 static int vfswrap_sys_acl_set_qualifier(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry, void *qual)
1047 {
1048         return sys_acl_set_qualifier(entry, qual);
1049 }
1050
1051 static int vfswrap_sys_acl_set_permset(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry, SMB_ACL_PERMSET_T permset)
1052 {
1053         return sys_acl_set_permset(entry, permset);
1054 }
1055
1056 static int vfswrap_sys_acl_valid(vfs_handle_struct *handle,  SMB_ACL_T theacl )
1057 {
1058         return sys_acl_valid(theacl );
1059 }
1060
1061 static int vfswrap_sys_acl_set_file(vfs_handle_struct *handle,  const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl)
1062 {
1063         return sys_acl_set_file(handle, name, acltype, theacl);
1064 }
1065
1066 static int vfswrap_sys_acl_set_fd(vfs_handle_struct *handle, files_struct *fsp, int fd, SMB_ACL_T theacl)
1067 {
1068         return sys_acl_set_fd(handle, fsp, fd, theacl);
1069 }
1070
1071 static int vfswrap_sys_acl_delete_def_file(vfs_handle_struct *handle,  const char *path)
1072 {
1073         return sys_acl_delete_def_file(handle, path);
1074 }
1075
1076 static int vfswrap_sys_acl_get_perm(vfs_handle_struct *handle,  SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm)
1077 {
1078         return sys_acl_get_perm(permset, perm);
1079 }
1080
1081 static int vfswrap_sys_acl_free_text(vfs_handle_struct *handle,  char *text)
1082 {
1083         return sys_acl_free_text(text);
1084 }
1085
1086 static int vfswrap_sys_acl_free_acl(vfs_handle_struct *handle,  SMB_ACL_T posix_acl)
1087 {
1088         return sys_acl_free_acl(posix_acl);
1089 }
1090
1091 static int vfswrap_sys_acl_free_qualifier(vfs_handle_struct *handle,  void *qualifier, SMB_ACL_TAG_T tagtype)
1092 {
1093         return sys_acl_free_qualifier(qualifier, tagtype);
1094 }
1095
1096 /****************************************************************
1097  Extended attribute operations.
1098 *****************************************************************/
1099
1100 static ssize_t vfswrap_getxattr(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size)
1101 {
1102         return sys_getxattr(path, name, value, size);
1103 }
1104
1105 static ssize_t vfswrap_lgetxattr(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size)
1106 {
1107         return sys_lgetxattr(path, name, value, size);
1108 }
1109
1110 static ssize_t vfswrap_fgetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp,int fd, const char *name, void *value, size_t size)
1111 {
1112         return sys_fgetxattr(fd, name, value, size);
1113 }
1114
1115 static ssize_t vfswrap_listxattr(struct vfs_handle_struct *handle, const char *path, char *list, size_t size)
1116 {
1117         return sys_listxattr(path, list, size);
1118 }
1119
1120 ssize_t vfswrap_llistxattr(struct vfs_handle_struct *handle, const char *path, char *list, size_t size)
1121 {
1122         return sys_llistxattr(path, list, size);
1123 }
1124
1125 ssize_t vfswrap_flistxattr(struct vfs_handle_struct *handle, struct files_struct *fsp,int fd, char *list, size_t size)
1126 {
1127         return sys_flistxattr(fd, list, size);
1128 }
1129
1130 static int vfswrap_removexattr(struct vfs_handle_struct *handle, const char *path, const char *name)
1131 {
1132         return sys_removexattr(path, name);
1133 }
1134
1135 static int vfswrap_lremovexattr(struct vfs_handle_struct *handle, const char *path, const char *name)
1136 {
1137         return sys_lremovexattr(path, name);
1138 }
1139
1140 static int vfswrap_fremovexattr(struct vfs_handle_struct *handle, struct files_struct *fsp,int fd, const char *name)
1141 {
1142         return sys_fremovexattr(fd, name);
1143 }
1144
1145 static int vfswrap_setxattr(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags)
1146 {
1147         return sys_setxattr(path, name, value, size, flags);
1148 }
1149
1150 static int vfswrap_lsetxattr(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags)
1151 {
1152         return sys_lsetxattr(path, name, value, size, flags);
1153 }
1154
1155 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)
1156 {
1157         return sys_fsetxattr(fd, name, value, size, flags);
1158 }
1159
1160 static int vfswrap_aio_read(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1161 {
1162         return sys_aio_read(aiocb);
1163 }
1164
1165 static int vfswrap_aio_write(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1166 {
1167         return sys_aio_write(aiocb);
1168 }
1169
1170 static ssize_t vfswrap_aio_return(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1171 {
1172         return sys_aio_return(aiocb);
1173 }
1174
1175 static int vfswrap_aio_cancel(struct vfs_handle_struct *handle, struct files_struct *fsp, int fd, SMB_STRUCT_AIOCB *aiocb)
1176 {
1177         return sys_aio_cancel(fd, aiocb);
1178 }
1179
1180 static int vfswrap_aio_error(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1181 {
1182         return sys_aio_error(aiocb);
1183 }
1184
1185 static int vfswrap_aio_fsync(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, SMB_STRUCT_AIOCB *aiocb)
1186 {
1187         return sys_aio_fsync(op, aiocb);
1188 }
1189
1190 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)
1191 {
1192         return sys_aio_suspend(aiocb, n, timeout);
1193 }
1194
1195 static vfs_op_tuple vfs_default_ops[] = {
1196
1197         /* Disk operations */
1198
1199         {SMB_VFS_OP(vfswrap_connect),   SMB_VFS_OP_CONNECT,
1200          SMB_VFS_LAYER_OPAQUE},
1201         {SMB_VFS_OP(vfswrap_disconnect),        SMB_VFS_OP_DISCONNECT,
1202          SMB_VFS_LAYER_OPAQUE},
1203         {SMB_VFS_OP(vfswrap_disk_free), SMB_VFS_OP_DISK_FREE,
1204          SMB_VFS_LAYER_OPAQUE},
1205         {SMB_VFS_OP(vfswrap_get_quota), SMB_VFS_OP_GET_QUOTA,
1206          SMB_VFS_LAYER_OPAQUE},
1207         {SMB_VFS_OP(vfswrap_set_quota), SMB_VFS_OP_SET_QUOTA,
1208          SMB_VFS_LAYER_OPAQUE},
1209         {SMB_VFS_OP(vfswrap_get_shadow_copy_data), SMB_VFS_OP_GET_SHADOW_COPY_DATA,
1210          SMB_VFS_LAYER_OPAQUE},
1211         {SMB_VFS_OP(vfswrap_statvfs),   SMB_VFS_OP_STATVFS,
1212          SMB_VFS_LAYER_OPAQUE},
1213
1214         /* Directory operations */
1215
1216         {SMB_VFS_OP(vfswrap_opendir),   SMB_VFS_OP_OPENDIR,
1217          SMB_VFS_LAYER_OPAQUE},
1218         {SMB_VFS_OP(vfswrap_readdir),   SMB_VFS_OP_READDIR,
1219          SMB_VFS_LAYER_OPAQUE},
1220         {SMB_VFS_OP(vfswrap_seekdir),   SMB_VFS_OP_SEEKDIR,
1221          SMB_VFS_LAYER_OPAQUE},
1222         {SMB_VFS_OP(vfswrap_telldir),   SMB_VFS_OP_TELLDIR,
1223          SMB_VFS_LAYER_OPAQUE},
1224         {SMB_VFS_OP(vfswrap_rewinddir), SMB_VFS_OP_REWINDDIR,
1225          SMB_VFS_LAYER_OPAQUE},
1226         {SMB_VFS_OP(vfswrap_mkdir),     SMB_VFS_OP_MKDIR,
1227          SMB_VFS_LAYER_OPAQUE},
1228         {SMB_VFS_OP(vfswrap_rmdir),     SMB_VFS_OP_RMDIR,
1229          SMB_VFS_LAYER_OPAQUE},
1230         {SMB_VFS_OP(vfswrap_closedir),  SMB_VFS_OP_CLOSEDIR,
1231          SMB_VFS_LAYER_OPAQUE},
1232
1233         /* File operations */
1234
1235         {SMB_VFS_OP(vfswrap_open),      SMB_VFS_OP_OPEN,
1236          SMB_VFS_LAYER_OPAQUE},
1237         {SMB_VFS_OP(vfswrap_close),     SMB_VFS_OP_CLOSE,
1238          SMB_VFS_LAYER_OPAQUE},
1239         {SMB_VFS_OP(vfswrap_read),      SMB_VFS_OP_READ,
1240          SMB_VFS_LAYER_OPAQUE},
1241         {SMB_VFS_OP(vfswrap_pread),     SMB_VFS_OP_PREAD,
1242          SMB_VFS_LAYER_OPAQUE},
1243         {SMB_VFS_OP(vfswrap_write),     SMB_VFS_OP_WRITE,
1244          SMB_VFS_LAYER_OPAQUE},
1245         {SMB_VFS_OP(vfswrap_pwrite),    SMB_VFS_OP_PWRITE,
1246          SMB_VFS_LAYER_OPAQUE},
1247         {SMB_VFS_OP(vfswrap_lseek),     SMB_VFS_OP_LSEEK,
1248          SMB_VFS_LAYER_OPAQUE},
1249         {SMB_VFS_OP(vfswrap_sendfile),  SMB_VFS_OP_SENDFILE,
1250          SMB_VFS_LAYER_OPAQUE},
1251         {SMB_VFS_OP(vfswrap_rename),    SMB_VFS_OP_RENAME,
1252          SMB_VFS_LAYER_OPAQUE},
1253         {SMB_VFS_OP(vfswrap_fsync),     SMB_VFS_OP_FSYNC,
1254          SMB_VFS_LAYER_OPAQUE},
1255         {SMB_VFS_OP(vfswrap_stat),      SMB_VFS_OP_STAT,
1256          SMB_VFS_LAYER_OPAQUE},
1257         {SMB_VFS_OP(vfswrap_fstat),     SMB_VFS_OP_FSTAT,
1258          SMB_VFS_LAYER_OPAQUE},
1259         {SMB_VFS_OP(vfswrap_lstat),     SMB_VFS_OP_LSTAT,
1260          SMB_VFS_LAYER_OPAQUE},
1261         {SMB_VFS_OP(vfswrap_unlink),    SMB_VFS_OP_UNLINK,
1262          SMB_VFS_LAYER_OPAQUE},
1263         {SMB_VFS_OP(vfswrap_chmod),     SMB_VFS_OP_CHMOD,
1264          SMB_VFS_LAYER_OPAQUE},
1265         {SMB_VFS_OP(vfswrap_fchmod),    SMB_VFS_OP_FCHMOD,
1266          SMB_VFS_LAYER_OPAQUE},
1267         {SMB_VFS_OP(vfswrap_chown),     SMB_VFS_OP_CHOWN,
1268          SMB_VFS_LAYER_OPAQUE},
1269         {SMB_VFS_OP(vfswrap_fchown),    SMB_VFS_OP_FCHOWN,
1270          SMB_VFS_LAYER_OPAQUE},
1271         {SMB_VFS_OP(vfswrap_chdir),     SMB_VFS_OP_CHDIR,
1272          SMB_VFS_LAYER_OPAQUE},
1273         {SMB_VFS_OP(vfswrap_getwd),     SMB_VFS_OP_GETWD,
1274          SMB_VFS_LAYER_OPAQUE},
1275         {SMB_VFS_OP(vfswrap_ntimes),    SMB_VFS_OP_NTIMES,
1276          SMB_VFS_LAYER_OPAQUE},
1277         {SMB_VFS_OP(vfswrap_ftruncate), SMB_VFS_OP_FTRUNCATE,
1278          SMB_VFS_LAYER_OPAQUE},
1279         {SMB_VFS_OP(vfswrap_lock),      SMB_VFS_OP_LOCK,
1280          SMB_VFS_LAYER_OPAQUE},
1281         {SMB_VFS_OP(vfswrap_kernel_flock),      SMB_VFS_OP_KERNEL_FLOCK,
1282          SMB_VFS_LAYER_OPAQUE},
1283         {SMB_VFS_OP(vfswrap_linux_setlease),    SMB_VFS_OP_LINUX_SETLEASE,
1284          SMB_VFS_LAYER_OPAQUE},
1285         {SMB_VFS_OP(vfswrap_getlock),   SMB_VFS_OP_GETLOCK,
1286          SMB_VFS_LAYER_OPAQUE},
1287         {SMB_VFS_OP(vfswrap_symlink),   SMB_VFS_OP_SYMLINK,
1288          SMB_VFS_LAYER_OPAQUE},
1289         {SMB_VFS_OP(vfswrap_readlink),  SMB_VFS_OP_READLINK,
1290          SMB_VFS_LAYER_OPAQUE},
1291         {SMB_VFS_OP(vfswrap_link),      SMB_VFS_OP_LINK,
1292          SMB_VFS_LAYER_OPAQUE},
1293         {SMB_VFS_OP(vfswrap_mknod),     SMB_VFS_OP_MKNOD,
1294          SMB_VFS_LAYER_OPAQUE},
1295         {SMB_VFS_OP(vfswrap_realpath),  SMB_VFS_OP_REALPATH,
1296          SMB_VFS_LAYER_OPAQUE},
1297         {SMB_VFS_OP(vfswrap_notify_watch),      SMB_VFS_OP_NOTIFY_WATCH,
1298          SMB_VFS_LAYER_OPAQUE},
1299         {SMB_VFS_OP(vfswrap_chflags),   SMB_VFS_OP_CHFLAGS,
1300          SMB_VFS_LAYER_OPAQUE},
1301
1302         /* NT ACL operations. */
1303
1304         {SMB_VFS_OP(vfswrap_fget_nt_acl),       SMB_VFS_OP_FGET_NT_ACL,
1305          SMB_VFS_LAYER_OPAQUE},
1306         {SMB_VFS_OP(vfswrap_get_nt_acl),        SMB_VFS_OP_GET_NT_ACL,
1307          SMB_VFS_LAYER_OPAQUE},
1308         {SMB_VFS_OP(vfswrap_fset_nt_acl),       SMB_VFS_OP_FSET_NT_ACL,
1309          SMB_VFS_LAYER_OPAQUE},
1310         {SMB_VFS_OP(vfswrap_set_nt_acl),        SMB_VFS_OP_SET_NT_ACL,
1311          SMB_VFS_LAYER_OPAQUE},
1312
1313         /* POSIX ACL operations. */
1314
1315         {SMB_VFS_OP(vfswrap_chmod_acl), SMB_VFS_OP_CHMOD_ACL,
1316          SMB_VFS_LAYER_OPAQUE},
1317         {SMB_VFS_OP(vfswrap_fchmod_acl),        SMB_VFS_OP_FCHMOD_ACL,
1318          SMB_VFS_LAYER_OPAQUE},
1319         {SMB_VFS_OP(vfswrap_sys_acl_get_entry), SMB_VFS_OP_SYS_ACL_GET_ENTRY,
1320          SMB_VFS_LAYER_OPAQUE},
1321         {SMB_VFS_OP(vfswrap_sys_acl_get_tag_type),      SMB_VFS_OP_SYS_ACL_GET_TAG_TYPE,
1322          SMB_VFS_LAYER_OPAQUE},
1323         {SMB_VFS_OP(vfswrap_sys_acl_get_permset),       SMB_VFS_OP_SYS_ACL_GET_PERMSET,
1324          SMB_VFS_LAYER_OPAQUE},
1325         {SMB_VFS_OP(vfswrap_sys_acl_get_qualifier),     SMB_VFS_OP_SYS_ACL_GET_QUALIFIER,
1326          SMB_VFS_LAYER_OPAQUE},
1327         {SMB_VFS_OP(vfswrap_sys_acl_get_file),  SMB_VFS_OP_SYS_ACL_GET_FILE,
1328          SMB_VFS_LAYER_OPAQUE},
1329         {SMB_VFS_OP(vfswrap_sys_acl_get_fd),    SMB_VFS_OP_SYS_ACL_GET_FD,
1330          SMB_VFS_LAYER_OPAQUE},
1331         {SMB_VFS_OP(vfswrap_sys_acl_clear_perms),       SMB_VFS_OP_SYS_ACL_CLEAR_PERMS,
1332          SMB_VFS_LAYER_OPAQUE},
1333         {SMB_VFS_OP(vfswrap_sys_acl_add_perm),  SMB_VFS_OP_SYS_ACL_ADD_PERM,
1334          SMB_VFS_LAYER_OPAQUE},
1335         {SMB_VFS_OP(vfswrap_sys_acl_to_text),   SMB_VFS_OP_SYS_ACL_TO_TEXT,
1336          SMB_VFS_LAYER_OPAQUE},
1337         {SMB_VFS_OP(vfswrap_sys_acl_init),      SMB_VFS_OP_SYS_ACL_INIT,
1338          SMB_VFS_LAYER_OPAQUE},
1339         {SMB_VFS_OP(vfswrap_sys_acl_create_entry),      SMB_VFS_OP_SYS_ACL_CREATE_ENTRY,
1340          SMB_VFS_LAYER_OPAQUE},
1341         {SMB_VFS_OP(vfswrap_sys_acl_set_tag_type),      SMB_VFS_OP_SYS_ACL_SET_TAG_TYPE,
1342          SMB_VFS_LAYER_OPAQUE},
1343         {SMB_VFS_OP(vfswrap_sys_acl_set_qualifier),     SMB_VFS_OP_SYS_ACL_SET_QUALIFIER,
1344          SMB_VFS_LAYER_OPAQUE},
1345         {SMB_VFS_OP(vfswrap_sys_acl_set_permset),       SMB_VFS_OP_SYS_ACL_SET_PERMSET,
1346          SMB_VFS_LAYER_OPAQUE},
1347         {SMB_VFS_OP(vfswrap_sys_acl_valid),     SMB_VFS_OP_SYS_ACL_VALID,
1348          SMB_VFS_LAYER_OPAQUE},
1349         {SMB_VFS_OP(vfswrap_sys_acl_set_file),  SMB_VFS_OP_SYS_ACL_SET_FILE,
1350          SMB_VFS_LAYER_OPAQUE},
1351         {SMB_VFS_OP(vfswrap_sys_acl_set_fd),    SMB_VFS_OP_SYS_ACL_SET_FD,
1352          SMB_VFS_LAYER_OPAQUE},
1353         {SMB_VFS_OP(vfswrap_sys_acl_delete_def_file),   SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE,
1354          SMB_VFS_LAYER_OPAQUE},
1355         {SMB_VFS_OP(vfswrap_sys_acl_get_perm),  SMB_VFS_OP_SYS_ACL_GET_PERM,
1356          SMB_VFS_LAYER_OPAQUE},
1357         {SMB_VFS_OP(vfswrap_sys_acl_free_text), SMB_VFS_OP_SYS_ACL_FREE_TEXT,
1358          SMB_VFS_LAYER_OPAQUE},
1359         {SMB_VFS_OP(vfswrap_sys_acl_free_acl),  SMB_VFS_OP_SYS_ACL_FREE_ACL,
1360          SMB_VFS_LAYER_OPAQUE},
1361         {SMB_VFS_OP(vfswrap_sys_acl_free_qualifier),    SMB_VFS_OP_SYS_ACL_FREE_QUALIFIER,
1362          SMB_VFS_LAYER_OPAQUE},
1363
1364         /* EA operations. */
1365
1366         {SMB_VFS_OP(vfswrap_getxattr),  SMB_VFS_OP_GETXATTR,
1367          SMB_VFS_LAYER_OPAQUE},
1368         {SMB_VFS_OP(vfswrap_lgetxattr), SMB_VFS_OP_LGETXATTR,
1369          SMB_VFS_LAYER_OPAQUE},
1370         {SMB_VFS_OP(vfswrap_fgetxattr), SMB_VFS_OP_FGETXATTR,
1371          SMB_VFS_LAYER_OPAQUE},
1372         {SMB_VFS_OP(vfswrap_listxattr), SMB_VFS_OP_LISTXATTR,
1373          SMB_VFS_LAYER_OPAQUE},
1374         {SMB_VFS_OP(vfswrap_llistxattr),        SMB_VFS_OP_LLISTXATTR,
1375          SMB_VFS_LAYER_OPAQUE},
1376         {SMB_VFS_OP(vfswrap_flistxattr),        SMB_VFS_OP_FLISTXATTR,
1377          SMB_VFS_LAYER_OPAQUE},
1378         {SMB_VFS_OP(vfswrap_removexattr),       SMB_VFS_OP_REMOVEXATTR,
1379          SMB_VFS_LAYER_OPAQUE},
1380         {SMB_VFS_OP(vfswrap_lremovexattr),      SMB_VFS_OP_LREMOVEXATTR,
1381          SMB_VFS_LAYER_OPAQUE},
1382         {SMB_VFS_OP(vfswrap_fremovexattr),      SMB_VFS_OP_FREMOVEXATTR,
1383          SMB_VFS_LAYER_OPAQUE},
1384         {SMB_VFS_OP(vfswrap_setxattr),  SMB_VFS_OP_SETXATTR,
1385          SMB_VFS_LAYER_OPAQUE},
1386         {SMB_VFS_OP(vfswrap_lsetxattr), SMB_VFS_OP_LSETXATTR,
1387          SMB_VFS_LAYER_OPAQUE},
1388         {SMB_VFS_OP(vfswrap_fsetxattr), SMB_VFS_OP_FSETXATTR,
1389          SMB_VFS_LAYER_OPAQUE},
1390
1391         {SMB_VFS_OP(vfswrap_aio_read),  SMB_VFS_OP_AIO_READ,
1392          SMB_VFS_LAYER_OPAQUE},
1393         {SMB_VFS_OP(vfswrap_aio_write), SMB_VFS_OP_AIO_WRITE,
1394          SMB_VFS_LAYER_OPAQUE},
1395         {SMB_VFS_OP(vfswrap_aio_return),        SMB_VFS_OP_AIO_RETURN,
1396          SMB_VFS_LAYER_OPAQUE},
1397         {SMB_VFS_OP(vfswrap_aio_cancel), SMB_VFS_OP_AIO_CANCEL,
1398          SMB_VFS_LAYER_OPAQUE},
1399         {SMB_VFS_OP(vfswrap_aio_error), SMB_VFS_OP_AIO_ERROR,
1400          SMB_VFS_LAYER_OPAQUE},
1401         {SMB_VFS_OP(vfswrap_aio_fsync), SMB_VFS_OP_AIO_FSYNC,
1402          SMB_VFS_LAYER_OPAQUE},
1403         {SMB_VFS_OP(vfswrap_aio_suspend),SMB_VFS_OP_AIO_SUSPEND,
1404          SMB_VFS_LAYER_OPAQUE},
1405
1406         /* Finish VFS operations definition */
1407
1408         {SMB_VFS_OP(NULL),              SMB_VFS_OP_NOOP,
1409          SMB_VFS_LAYER_NOOP}
1410 };
1411
1412 NTSTATUS vfs_default_init(void);
1413 NTSTATUS vfs_default_init(void)
1414 {
1415         unsigned int needed = SMB_VFS_OP_LAST + 1; /* convert from index to count */
1416
1417         if (ARRAY_SIZE(vfs_default_ops) != needed) {
1418                 DEBUG(0, ("%s: %u ops registered, but %u ops are required\n",
1419                         DEFAULT_VFS_MODULE_NAME, (unsigned int)ARRAY_SIZE(vfs_default_ops), needed));
1420                 smb_panic("operation(s) missing from default VFS module");
1421         }
1422
1423         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
1424                                 DEFAULT_VFS_MODULE_NAME, vfs_default_ops);
1425 }