source3/modules/vfs_default.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Wrap disk only vfs functions to sidestep dodgy compilers.
   4    Copyright (C) Tim Potter 1998
   5    Copyright (C) Jeremy Allison 2007
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "includes.h"
  22
  23 #undef DBGC_CLASS
  24 #define DBGC_CLASS DBGC_VFS
  25
  26 /* Check for NULL pointer parameters in vfswrap_* functions */
  27
  28 /* We don't want to have NULL function pointers lying around.  Someone
  29    is sure to try and execute them.  These stubs are used to prevent
  30    this possibility. */
  31
  32 static int vfswrap_connect(vfs_handle_struct *handle,  const char *service, const char *user)
  33 {
  34     return 0;    /* Return >= 0 for success */
  35 }
  36
  37 static void vfswrap_disconnect(vfs_handle_struct *handle)
  38 {
  39 }
  40
  41 /* Disk operations */
  42
  43 static uint64_t vfswrap_disk_free(vfs_handle_struct *handle,  const char *path, bool small_query, uint64_t *bsize,
  44                                uint64_t *dfree, uint64_t *dsize)
  45 {
  46         uint64_t result;
  47
  48         result = sys_disk_free(handle->conn, path, small_query, bsize, dfree, dsize);
  49         return result;
  50 }
  51
  52 static int vfswrap_get_quota(struct vfs_handle_struct *handle,  enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
  53 {
  54 #ifdef HAVE_SYS_QUOTAS
  55         int result;
  56
  57         START_PROFILE(syscall_get_quota);
  58         result = sys_get_quota(handle->conn->connectpath, qtype, id, qt);
  59         END_PROFILE(syscall_get_quota);
  60         return result;
  61 #else
  62         errno = ENOSYS;
  63         return -1;
  64 #endif
  65 }
  66
  67 static int vfswrap_set_quota(struct vfs_handle_struct *handle,  enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
  68 {
  69 #ifdef HAVE_SYS_QUOTAS
  70         int result;
  71
  72         START_PROFILE(syscall_set_quota);
  73         result = sys_set_quota(handle->conn->connectpath, qtype, id, qt);
  74         END_PROFILE(syscall_set_quota);
  75         return result;
  76 #else
  77         errno = ENOSYS;
  78         return -1;
  79 #endif
  80 }
  81
  82 static int vfswrap_get_shadow_copy_data(struct vfs_handle_struct *handle, struct files_struct *fsp, SHADOW_COPY_DATA *shadow_copy_data, bool labels)
  83 {
  84         errno = ENOSYS;
  85         return -1;  /* Not implemented. */
  86 }
  87
  88 static int vfswrap_statvfs(struct vfs_handle_struct *handle,  const char *path, vfs_statvfs_struct *statbuf)
  89 {
  90         return sys_statvfs(path, statbuf);
  91 }
  92
  93 static uint32_t vfswrap_fs_capabilities(struct vfs_handle_struct *handle,
  94                 enum timestamp_set_resolution *p_ts_res)
  95 {
  96         connection_struct *conn = handle->conn;
  97         uint32_t caps = FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
  98         struct smb_filename *smb_fname_cpath = NULL;
  99         NTSTATUS status;
 100         int ret = -1;
 101
 102 #if defined(DARWINOS)
 103         struct vfs_statvfs_struct statbuf;
 104         ZERO_STRUCT(statbuf);
 105         sys_statvfs(conn->connectpath, &statbuf);
 106         caps = statbuf.FsCapabilities;
 107 #endif
 108
 109         *p_ts_res = TIMESTAMP_SET_SECONDS;
 110
 111         /* Work out what timestamp resolution we can
 112          * use when setting a timestamp. */
 113
 114         status = create_synthetic_smb_fname(talloc_tos(),
 115                                 conn->connectpath,
 116                                 NULL,
 117                                 NULL,
 118                                 &smb_fname_cpath);
 119         if (!NT_STATUS_IS_OK(status)) {
 120                 return caps;
 121         }
 122
 123         ret = SMB_VFS_STAT(conn, smb_fname_cpath);
 124         if (ret == -1) {
 125                 TALLOC_FREE(smb_fname_cpath);
 126                 return caps;
 127         }
 128
 129         if (smb_fname_cpath->st.st_ex_mtime.tv_nsec ||
 130                         smb_fname_cpath->st.st_ex_atime.tv_nsec ||
 131                         smb_fname_cpath->st.st_ex_ctime.tv_nsec) {
 132                 /* If any of the normal UNIX directory timestamps
 133                  * have a non-zero tv_nsec component assume
 134                  * we might be able to set sub-second timestamps.
 135                  * See what filetime set primitives we have.
 136                  */
 137 #if defined(HAVE_UTIMENSAT)
 138                 *p_ts_res = TIMESTAMP_SET_NT_OR_BETTER;
 139 #elif defined(HAVE_UTIMES)
 140                 /* utimes allows msec timestamps to be set. */
 141                 *p_ts_res = TIMESTAMP_SET_MSEC;
 142 #elif defined(HAVE_UTIME)
 143                 /* utime only allows sec timestamps to be set. */
 144                 *p_ts_res = TIMESTAMP_SET_SECONDS;
 145 #endif
 146
 147                 DEBUG(10,("vfswrap_fs_capabilities: timestamp "
 148                         "resolution of %s "
 149                         "available on share %s, directory %s\n",
 150                         *p_ts_res == TIMESTAMP_SET_MSEC ? "msec" : "sec",
 151                         lp_servicename(conn->cnum),
 152                         conn->connectpath ));
 153         }
 154         TALLOC_FREE(smb_fname_cpath);
 155         return caps;
 156 }
 157
 158 /* Directory operations */
 159
 160 static SMB_STRUCT_DIR *vfswrap_opendir(vfs_handle_struct *handle,  const char *fname, const char *mask, uint32 attr)
 161 {
 162         SMB_STRUCT_DIR *result;
 163
 164         START_PROFILE(syscall_opendir);
 165         result = sys_opendir(fname);
 166         END_PROFILE(syscall_opendir);
 167         return result;
 168 }
 169
 170 static SMB_STRUCT_DIRENT *vfswrap_readdir(vfs_handle_struct *handle,
 171                                           SMB_STRUCT_DIR *dirp,
 172                                           SMB_STRUCT_STAT *sbuf)
 173 {
 174         SMB_STRUCT_DIRENT *result;
 175
 176         START_PROFILE(syscall_readdir);
 177         result = sys_readdir(dirp);
 178         /* Default Posix readdir() does not give us stat info.
 179          * Set to invalid to indicate we didn't return this info. */
 180         if (sbuf)
 181                 SET_STAT_INVALID(*sbuf);
 182         END_PROFILE(syscall_readdir);
 183         return result;
 184 }
 185
 186 static void vfswrap_seekdir(vfs_handle_struct *handle,  SMB_STRUCT_DIR *dirp, long offset)
 187 {
 188         START_PROFILE(syscall_seekdir);
 189         sys_seekdir(dirp, offset);
 190         END_PROFILE(syscall_seekdir);
 191 }
 192
 193 static long vfswrap_telldir(vfs_handle_struct *handle,  SMB_STRUCT_DIR *dirp)
 194 {
 195         long result;
 196         START_PROFILE(syscall_telldir);
 197         result = sys_telldir(dirp);
 198         END_PROFILE(syscall_telldir);
 199         return result;
 200 }
 201
 202 static void vfswrap_rewinddir(vfs_handle_struct *handle,  SMB_STRUCT_DIR *dirp)
 203 {
 204         START_PROFILE(syscall_rewinddir);
 205         sys_rewinddir(dirp);
 206         END_PROFILE(syscall_rewinddir);
 207 }
 208
 209 static int vfswrap_mkdir(vfs_handle_struct *handle,  const char *path, mode_t mode)
 210 {
 211         int result;
 212         bool has_dacl = False;
 213         char *parent = NULL;
 214
 215         START_PROFILE(syscall_mkdir);
 216
 217         if (lp_inherit_acls(SNUM(handle->conn))
 218             && parent_dirname(talloc_tos(), path, &parent, NULL)
 219             && (has_dacl = directory_has_default_acl(handle->conn, parent)))
 220                 mode = 0777;
 221
 222         TALLOC_FREE(parent);
 223
 224         result = mkdir(path, mode);
 225
 226         if (result == 0 && !has_dacl) {
 227                 /*
 228                  * We need to do this as the default behavior of POSIX ACLs
 229                  * is to set the mask to be the requested group permission
 230                  * bits, not the group permission bits to be the requested
 231                  * group permission bits. This is not what we want, as it will
 232                  * mess up any inherited ACL bits that were set. JRA.
 233                  */
 234                 int saved_errno = errno; /* We may get ENOSYS */
 235                 if ((SMB_VFS_CHMOD_ACL(handle->conn, path, mode) == -1) && (errno == ENOSYS))
 236                         errno = saved_errno;
 237         }
 238
 239         END_PROFILE(syscall_mkdir);
 240         return result;
 241 }
 242
 243 static int vfswrap_rmdir(vfs_handle_struct *handle,  const char *path)
 244 {
 245         int result;
 246
 247         START_PROFILE(syscall_rmdir);
 248         result = rmdir(path);
 249         END_PROFILE(syscall_rmdir);
 250         return result;
 251 }
 252
 253 static int vfswrap_closedir(vfs_handle_struct *handle,  SMB_STRUCT_DIR *dirp)
 254 {
 255         int result;
 256
 257         START_PROFILE(syscall_closedir);
 258         result = sys_closedir(dirp);
 259         END_PROFILE(syscall_closedir);
 260         return result;
 261 }
 262
 263 static void vfswrap_init_search_op(vfs_handle_struct *handle,
 264                                    SMB_STRUCT_DIR *dirp)
 265 {
 266         /* Default behavior is a NOOP */
 267 }
 268
 269 /* File operations */
 270
 271 static int vfswrap_open(vfs_handle_struct *handle,
 272                         struct smb_filename *smb_fname,
 273                         files_struct *fsp, int flags, mode_t mode)
 274 {
 275         int result = -1;
 276
 277         START_PROFILE(syscall_open);
 278
 279         if (smb_fname->stream_name) {
 280                 errno = ENOENT;
 281                 goto out;
 282         }
 283
 284         result = sys_open(smb_fname->base_name, flags, mode);
 285  out:
 286         END_PROFILE(syscall_open);
 287         return result;
 288 }
 289
 290 static NTSTATUS vfswrap_create_file(vfs_handle_struct *handle,
 291                                     struct smb_request *req,
 292                                     uint16_t root_dir_fid,
 293                                     struct smb_filename *smb_fname,
 294                                     uint32_t access_mask,
 295                                     uint32_t share_access,
 296                                     uint32_t create_disposition,
 297                                     uint32_t create_options,
 298                                     uint32_t file_attributes,
 299                                     uint32_t oplock_request,
 300                                     uint64_t allocation_size,
 301                                     struct security_descriptor *sd,
 302                                     struct ea_list *ea_list,
 303                                     files_struct **result,
 304                                     int *pinfo)
 305 {
 306         return create_file_default(handle->conn, req, root_dir_fid, smb_fname,
 307                                    access_mask, share_access,
 308                                    create_disposition, create_options,
 309                                    file_attributes, oplock_request,
 310                                    allocation_size, sd, ea_list, result,
 311                                    pinfo);
 312 }
 313
 314 static int vfswrap_close(vfs_handle_struct *handle, files_struct *fsp)
 315 {
 316         int result;
 317
 318         START_PROFILE(syscall_close);
 319         result = fd_close_posix(fsp);
 320         END_PROFILE(syscall_close);
 321         return result;
 322 }
 323
 324 static ssize_t vfswrap_read(vfs_handle_struct *handle, files_struct *fsp, void *data, size_t n)
 325 {
 326         ssize_t result;
 327
 328         START_PROFILE_BYTES(syscall_read, n);
 329         result = sys_read(fsp->fh->fd, data, n);
 330         END_PROFILE(syscall_read);
 331         return result;
 332 }
 333
 334 static ssize_t vfswrap_pread(vfs_handle_struct *handle, files_struct *fsp, void *data,
 335                         size_t n, SMB_OFF_T offset)
 336 {
 337         ssize_t result;
 338
 339 #if defined(HAVE_PREAD) || defined(HAVE_PREAD64)
 340         START_PROFILE_BYTES(syscall_pread, n);
 341         result = sys_pread(fsp->fh->fd, data, n, offset);
 342         END_PROFILE(syscall_pread);
 343
 344         if (result == -1 && errno == ESPIPE) {
 345                 /* Maintain the fiction that pipes can be seeked (sought?) on. */
 346                 result = SMB_VFS_READ(fsp, data, n);
 347                 fsp->fh->pos = 0;
 348         }
 349
 350 #else /* HAVE_PREAD */
 351         SMB_OFF_T   curr;
 352         int lerrno;
 353
 354         curr = SMB_VFS_LSEEK(fsp, 0, SEEK_CUR);
 355         if (curr == -1 && errno == ESPIPE) {
 356                 /* Maintain the fiction that pipes can be seeked (sought?) on. */
 357                 result = SMB_VFS_READ(fsp, data, n);
 358                 fsp->fh->pos = 0;
 359                 return result;
 360         }
 361
 362         if (SMB_VFS_LSEEK(fsp, offset, SEEK_SET) == -1) {
 363                 return -1;
 364         }
 365
 366         errno = 0;
 367         result = SMB_VFS_READ(fsp, data, n);
 368         lerrno = errno;
 369
 370         SMB_VFS_LSEEK(fsp, curr, SEEK_SET);
 371         errno = lerrno;
 372
 373 #endif /* HAVE_PREAD */
 374
 375         return result;
 376 }
 377
 378 static ssize_t vfswrap_write(vfs_handle_struct *handle, files_struct *fsp, const void *data, size_t n)
 379 {
 380         ssize_t result;
 381
 382         START_PROFILE_BYTES(syscall_write, n);
 383         result = sys_write(fsp->fh->fd, data, n);
 384         END_PROFILE(syscall_write);
 385         return result;
 386 }
 387
 388 static ssize_t vfswrap_pwrite(vfs_handle_struct *handle, files_struct *fsp, const void *data,
 389                         size_t n, SMB_OFF_T offset)
 390 {
 391         ssize_t result;
 392
 393 #if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
 394         START_PROFILE_BYTES(syscall_pwrite, n);
 395         result = sys_pwrite(fsp->fh->fd, data, n, offset);
 396         END_PROFILE(syscall_pwrite);
 397
 398         if (result == -1 && errno == ESPIPE) {
 399                 /* Maintain the fiction that pipes can be sought on. */
 400                 result = SMB_VFS_WRITE(fsp, data, n);
 401         }
 402
 403 #else /* HAVE_PWRITE */
 404         SMB_OFF_T   curr;
 405         int         lerrno;
 406
 407         curr = SMB_VFS_LSEEK(fsp, 0, SEEK_CUR);
 408         if (curr == -1) {
 409                 return -1;
 410         }
 411
 412         if (SMB_VFS_LSEEK(fsp, offset, SEEK_SET) == -1) {
 413                 return -1;
 414         }
 415
 416         result = SMB_VFS_WRITE(fsp, data, n);
 417         lerrno = errno;
 418
 419         SMB_VFS_LSEEK(fsp, curr, SEEK_SET);
 420         errno = lerrno;
 421
 422 #endif /* HAVE_PWRITE */
 423
 424         return result;
 425 }
 426
 427 static SMB_OFF_T vfswrap_lseek(vfs_handle_struct *handle, files_struct *fsp, SMB_OFF_T offset, int whence)
 428 {
 429         SMB_OFF_T result = 0;
 430
 431         START_PROFILE(syscall_lseek);
 432
 433         /* Cope with 'stat' file opens. */
 434         if (fsp->fh->fd != -1)
 435                 result = sys_lseek(fsp->fh->fd, offset, whence);
 436
 437         /*
 438          * We want to maintain the fiction that we can seek
 439          * on a fifo for file system purposes. This allows
 440          * people to set up UNIX fifo's that feed data to Windows
 441          * applications. JRA.
 442          */
 443
 444         if((result == -1) && (errno == ESPIPE)) {
 445                 result = 0;
 446                 errno = 0;
 447         }
 448
 449         END_PROFILE(syscall_lseek);
 450         return result;
 451 }
 452
 453 static ssize_t vfswrap_sendfile(vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *hdr,
 454                         SMB_OFF_T offset, size_t n)
 455 {
 456         ssize_t result;
 457
 458         START_PROFILE_BYTES(syscall_sendfile, n);
 459         result = sys_sendfile(tofd, fromfsp->fh->fd, hdr, offset, n);
 460         END_PROFILE(syscall_sendfile);
 461         return result;
 462 }
 463
 464 static ssize_t vfswrap_recvfile(vfs_handle_struct *handle,
 465                         int fromfd,
 466                         files_struct *tofsp,
 467                         SMB_OFF_T offset,
 468                         size_t n)
 469 {
 470         ssize_t result;
 471
 472         START_PROFILE_BYTES(syscall_recvfile, n);
 473         result = sys_recvfile(fromfd, tofsp->fh->fd, offset, n);
 474         END_PROFILE(syscall_recvfile);
 475         return result;
 476 }
 477
 478 /*********************************************************
 479  For rename across filesystems Patch from Warren Birnbaum
 480  <warrenb@hpcvscdp.cv.hp.com>
 481 **********************************************************/
 482
 483 static int copy_reg(const char *source, const char *dest)
 484 {
 485         SMB_STRUCT_STAT source_stats;
 486         int saved_errno;
 487         int ifd = -1;
 488         int ofd = -1;
 489
 490         if (sys_lstat (source, &source_stats) == -1)
 491                 return -1;
 492
 493         if (!S_ISREG (source_stats.st_ex_mode))
 494                 return -1;
 495
 496         if((ifd = sys_open (source, O_RDONLY, 0)) < 0)
 497                 return -1;
 498
 499         if (unlink (dest) && errno != ENOENT)
 500                 return -1;
 501
 502 #ifdef O_NOFOLLOW
 503         if((ofd = sys_open (dest, O_WRONLY | O_CREAT | O_TRUNC | O_NOFOLLOW, 0600)) < 0 )
 504 #else
 505         if((ofd = sys_open (dest, O_WRONLY | O_CREAT | O_TRUNC , 0600)) < 0 )
 506 #endif
 507                 goto err;
 508
 509         if (transfer_file(ifd, ofd, (size_t)-1) == -1)
 510                 goto err;
 511
 512         /*
 513          * Try to preserve ownership.  For non-root it might fail, but that's ok.
 514          * But root probably wants to know, e.g. if NFS disallows it.
 515          */
 516
 517 #ifdef HAVE_FCHOWN
 518         if ((fchown(ofd, source_stats.st_ex_uid, source_stats.st_ex_gid) == -1) && (errno != EPERM))
 519 #else
 520         if ((chown(dest, source_stats.st_ex_uid, source_stats.st_ex_gid) == -1) && (errno != EPERM))
 521 #endif
 522                 goto err;
 523
 524         /*
 525          * fchown turns off set[ug]id bits for non-root,
 526          * so do the chmod last.
 527          */
 528
 529 #if defined(HAVE_FCHMOD)
 530         if (fchmod (ofd, source_stats.st_ex_mode & 07777))
 531 #else
 532         if (chmod (dest, source_stats.st_ex_mode & 07777))
 533 #endif
 534                 goto err;
 535
 536         if (close (ifd) == -1)
 537                 goto err;
 538
 539         if (close (ofd) == -1)
 540                 return -1;
 541
 542         /* Try to copy the old file's modtime and access time.  */
 543         {
 544                 struct utimbuf tv;
 545
 546                 tv.actime = convert_timespec_to_time_t(source_stats.st_ex_atime);
 547                 tv.modtime = convert_timespec_to_time_t(source_stats.st_ex_mtime);
 548                 utime(dest, &tv);
 549         }
 550
 551         if (unlink (source) == -1)
 552                 return -1;
 553
 554         return 0;
 555
 556   err:
 557
 558         saved_errno = errno;
 559         if (ifd != -1)
 560                 close(ifd);
 561         if (ofd != -1)
 562                 close(ofd);
 563         errno = saved_errno;
 564         return -1;
 565 }
 566
 567 static int vfswrap_rename(vfs_handle_struct *handle,
 568                           const struct smb_filename *smb_fname_src,
 569                           const struct smb_filename *smb_fname_dst)
 570 {
 571         int result = -1;
 572
 573         START_PROFILE(syscall_rename);
 574
 575         if (smb_fname_src->stream_name || smb_fname_dst->stream_name) {
 576                 errno = ENOENT;
 577                 goto out;
 578         }
 579
 580         result = rename(smb_fname_src->base_name, smb_fname_dst->base_name);
 581         if ((result == -1) && (errno == EXDEV)) {
 582                 /* Rename across filesystems needed. */
 583                 result = copy_reg(smb_fname_src->base_name,
 584                                   smb_fname_dst->base_name);
 585         }
 586
 587  out:
 588         END_PROFILE(syscall_rename);
 589         return result;
 590 }
 591
 592 static int vfswrap_fsync(vfs_handle_struct *handle, files_struct *fsp)
 593 {
 594 #ifdef HAVE_FSYNC
 595         int result;
 596
 597         START_PROFILE(syscall_fsync);
 598         result = fsync(fsp->fh->fd);
 599         END_PROFILE(syscall_fsync);
 600         return result;
 601 #else
 602         return 0;
 603 #endif
 604 }
 605
 606 static int vfswrap_stat(vfs_handle_struct *handle,
 607                         struct smb_filename *smb_fname)
 608 {
 609         int result = -1;
 610
 611         START_PROFILE(syscall_stat);
 612
 613         if (smb_fname->stream_name) {
 614                 errno = ENOENT;
 615                 goto out;
 616         }
 617
 618         result = sys_stat(smb_fname->base_name, &smb_fname->st);
 619  out:
 620         END_PROFILE(syscall_stat);
 621         return result;
 622 }
 623
 624 static int vfswrap_fstat(vfs_handle_struct *handle, files_struct *fsp, SMB_STRUCT_STAT *sbuf)
 625 {
 626         int result;
 627
 628         START_PROFILE(syscall_fstat);
 629         result = sys_fstat(fsp->fh->fd, sbuf);
 630         END_PROFILE(syscall_fstat);
 631         return result;
 632 }
 633
 634 static int vfswrap_lstat(vfs_handle_struct *handle,
 635                          struct smb_filename *smb_fname)
 636 {
 637         int result = -1;
 638
 639         START_PROFILE(syscall_lstat);
 640
 641         if (smb_fname->stream_name) {
 642                 errno = ENOENT;
 643                 goto out;
 644         }
 645
 646         result = sys_lstat(smb_fname->base_name, &smb_fname->st);
 647  out:
 648         END_PROFILE(syscall_lstat);
 649         return result;
 650 }
 651
 652 static NTSTATUS vfswrap_translate_name(vfs_handle_struct *handle,
 653                                        char **mapped_name,
 654                                        enum vfs_translate_direction direction)
 655 {
 656         /* Default behavior is a NOOP */
 657
 658         if (*mapped_name != NULL)
 659                 return NT_STATUS_OK;
 660
 661         return NT_STATUS_INVALID_PARAMETER;
 662 }
 663 /********************************************************************
 664  Given a stat buffer return the allocated size on disk, taking into
 665  account sparse files.
 666 ********************************************************************/
 667 static uint64_t vfswrap_get_alloc_size(vfs_handle_struct *handle,
 668                                        struct files_struct *fsp,
 669                                        const SMB_STRUCT_STAT *sbuf)
 670 {
 671         uint64_t result;
 672
 673         START_PROFILE(syscall_get_alloc_size);
 674
 675         if(S_ISDIR(sbuf->st_ex_mode)) {
 676                 result = 0;
 677                 goto out;
 678         }
 679
 680 #if defined(HAVE_STAT_ST_BLOCKS) && defined(STAT_ST_BLOCKSIZE)
 681         result = (uint64_t)STAT_ST_BLOCKSIZE * (uint64_t)sbuf->st_ex_blocks;
 682 #else
 683         result = get_file_size_stat(sbuf);
 684 #endif
 685
 686         if (fsp && fsp->initial_allocation_size)
 687                 result = MAX(result,fsp->initial_allocation_size);
 688
 689         result = smb_roundup(handle->conn, result);
 690
 691  out:
 692         END_PROFILE(syscall_get_alloc_size);
 693         return result;
 694 }
 695
 696 static int vfswrap_unlink(vfs_handle_struct *handle,
 697                           const struct smb_filename *smb_fname)
 698 {
 699         int result = -1;
 700
 701         START_PROFILE(syscall_unlink);
 702
 703         if (smb_fname->stream_name) {
 704                 errno = ENOENT;
 705                 goto out;
 706         }
 707         result = unlink(smb_fname->base_name);
 708
 709  out:
 710         END_PROFILE(syscall_unlink);
 711         return result;
 712 }
 713
 714 static int vfswrap_chmod(vfs_handle_struct *handle,  const char *path, mode_t mode)
 715 {
 716         int result;
 717
 718         START_PROFILE(syscall_chmod);
 719
 720         /*
 721          * We need to do this due to the fact that the default POSIX ACL
 722          * chmod modifies the ACL *mask* for the group owner, not the
 723          * group owner bits directly. JRA.
 724          */
 725
 726
 727         {
 728                 int saved_errno = errno; /* We might get ENOSYS */
 729                 if ((result = SMB_VFS_CHMOD_ACL(handle->conn, path, mode)) == 0) {
 730                         END_PROFILE(syscall_chmod);
 731                         return result;
 732                 }
 733                 /* Error - return the old errno. */
 734                 errno = saved_errno;
 735         }
 736
 737         result = chmod(path, mode);
 738         END_PROFILE(syscall_chmod);
 739         return result;
 740 }
 741
 742 static int vfswrap_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
 743 {
 744         int result;
 745
 746         START_PROFILE(syscall_fchmod);
 747
 748         /*
 749          * We need to do this due to the fact that the default POSIX ACL
 750          * chmod modifies the ACL *mask* for the group owner, not the
 751          * group owner bits directly. JRA.
 752          */
 753
 754         {
 755                 int saved_errno = errno; /* We might get ENOSYS */
 756                 if ((result = SMB_VFS_FCHMOD_ACL(fsp, mode)) == 0) {
 757                         END_PROFILE(syscall_fchmod);
 758                         return result;
 759                 }
 760                 /* Error - return the old errno. */
 761                 errno = saved_errno;
 762         }
 763
 764 #if defined(HAVE_FCHMOD)
 765         result = fchmod(fsp->fh->fd, mode);
 766 #else
 767         result = -1;
 768         errno = ENOSYS;
 769 #endif
 770
 771         END_PROFILE(syscall_fchmod);
 772         return result;
 773 }
 774
 775 static int vfswrap_chown(vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
 776 {
 777         int result;
 778
 779         START_PROFILE(syscall_chown);
 780         result = chown(path, uid, gid);
 781         END_PROFILE(syscall_chown);
 782         return result;
 783 }
 784
 785 static int vfswrap_fchown(vfs_handle_struct *handle, files_struct *fsp, uid_t uid, gid_t gid)
 786 {
 787 #ifdef HAVE_FCHOWN
 788         int result;
 789
 790         START_PROFILE(syscall_fchown);
 791         result = fchown(fsp->fh->fd, uid, gid);
 792         END_PROFILE(syscall_fchown);
 793         return result;
 794 #else
 795         errno = ENOSYS;
 796         return -1;
 797 #endif
 798 }
 799
 800 static int vfswrap_lchown(vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
 801 {
 802         int result;
 803
 804         START_PROFILE(syscall_lchown);
 805         result = lchown(path, uid, gid);
 806         END_PROFILE(syscall_lchown);
 807         return result;
 808 }
 809
 810 static int vfswrap_chdir(vfs_handle_struct *handle,  const char *path)
 811 {
 812         int result;
 813
 814         START_PROFILE(syscall_chdir);
 815         result = chdir(path);
 816         END_PROFILE(syscall_chdir);
 817         return result;
 818 }
 819
 820 static char *vfswrap_getwd(vfs_handle_struct *handle,  char *path)
 821 {
 822         char *result;
 823
 824         START_PROFILE(syscall_getwd);
 825         result = sys_getwd(path);
 826         END_PROFILE(syscall_getwd);
 827         return result;
 828 }
 829
 830 /*********************************************************************
 831  nsec timestamp resolution call. Convert down to whatever the underlying
 832  system will support.
 833 **********************************************************************/
 834
 835 static int vfswrap_ntimes(vfs_handle_struct *handle,
 836                           const struct smb_filename *smb_fname,
 837                           struct smb_file_time *ft)
 838 {
 839         int result = -1;
 840
 841         START_PROFILE(syscall_ntimes);
 842
 843         if (smb_fname->stream_name) {
 844                 errno = ENOENT;
 845                 goto out;
 846         }
 847
 848         if (null_timespec(ft->atime)) {
 849                 ft->atime= smb_fname->st.st_ex_atime;
 850         }
 851
 852         if (null_timespec(ft->mtime)) {
 853                 ft->mtime = smb_fname->st.st_ex_mtime;
 854         }
 855
 856         if (!null_timespec(ft->create_time) &&
 857                         lp_store_create_time(SNUM(handle->conn))) {
 858                 set_create_timespec_ea(handle->conn,
 859                                 NULL,
 860                                 smb_fname,
 861                                 ft->create_time);
 862         }
 863
 864         if ((timespec_compare(&ft->atime,
 865                                 &smb_fname->st.st_ex_atime) == 0) &&
 866                         (timespec_compare(&ft->mtime,
 867                                 &smb_fname->st.st_ex_mtime) == 0)) {
 868                 return 0;
 869         }
 870
 871 #if defined(HAVE_UTIMENSAT)
 872         if (ft != NULL) {
 873                 struct timespec ts[2];
 874                 ts[0] = ft->atime;
 875                 ts[1] = ft->mtime;
 876                 result = utimensat(AT_FDCWD, smb_fname->base_name, ts, 0);
 877         } else {
 878                 result = utimensat(AT_FDCWD, smb_fname->base_name, NULL, 0);
 879         }
 880 #elif defined(HAVE_UTIMES)
 881         if (ft != NULL) {
 882                 struct timeval tv[2];
 883                 tv[0] = convert_timespec_to_timeval(ft->atime);
 884                 tv[1] = convert_timespec_to_timeval(ft->mtime);
 885                 result = utimes(smb_fname->base_name, tv);
 886         } else {
 887                 result = utimes(smb_fname->base_name, NULL);
 888         }
 889 #elif defined(HAVE_UTIME)
 890         if (ft != NULL) {
 891                 struct utimbuf times;
 892                 times.actime = convert_timespec_to_time_t(ft->atime);
 893                 times.modtime = convert_timespec_to_time_t(ft->mtime);
 894                 result = utime(smb_fname->base_name, &times);
 895         } else {
 896                 result = utime(smb_fname->base_name, NULL);
 897         }
 898 #else
 899         errno = ENOSYS;
 900         result = -1;
 901 #endif
 902
 903  out:
 904         END_PROFILE(syscall_ntimes);
 905         return result;
 906 }
 907
 908 /*********************************************************************
 909  A version of ftruncate that will write the space on disk if strict
 910  allocate is set.
 911 **********************************************************************/
 912
 913 static int strict_allocate_ftruncate(vfs_handle_struct *handle, files_struct *fsp, SMB_OFF_T len)
 914 {
 915         SMB_STRUCT_STAT st;
 916         SMB_OFF_T currpos = SMB_VFS_LSEEK(fsp, 0, SEEK_CUR);
 917         unsigned char zero_space[4096];
 918         SMB_OFF_T space_to_write;
 919
 920         if (currpos == -1)
 921                 return -1;
 922
 923         if (SMB_VFS_FSTAT(fsp, &st) == -1)
 924                 return -1;
 925
 926         space_to_write = len - st.st_ex_size;
 927
 928 #ifdef S_ISFIFO
 929         if (S_ISFIFO(st.st_ex_mode))
 930                 return 0;
 931 #endif
 932
 933         if (st.st_ex_size == len)
 934                 return 0;
 935
 936         /* Shrink - just ftruncate. */
 937         if (st.st_ex_size > len)
 938                 return sys_ftruncate(fsp->fh->fd, len);
 939
 940         /* available disk space is enough or not? */
 941         if (lp_strict_allocate(SNUM(fsp->conn))){
 942                 uint64_t space_avail;
 943                 uint64_t bsize,dfree,dsize;
 944
 945                 space_avail = get_dfree_info(fsp->conn,
 946                                              fsp->fsp_name->base_name, false,
 947                                              &bsize, &dfree, &dsize);
 948                 /* space_avail is 1k blocks */
 949                 if (space_avail == (uint64_t)-1 ||
 950                                 ((uint64_t)space_to_write/1024 > space_avail) ) {
 951                         errno = ENOSPC;
 952                         return -1;
 953                 }
 954         }
 955
 956         /* Write out the real space on disk. */
 957         if (SMB_VFS_LSEEK(fsp, st.st_ex_size, SEEK_SET) != st.st_ex_size)
 958                 return -1;
 959
 960         space_to_write = len - st.st_ex_size;
 961
 962         memset(zero_space, '\0', sizeof(zero_space));
 963         while ( space_to_write > 0) {
 964                 SMB_OFF_T retlen;
 965                 SMB_OFF_T current_len_to_write = MIN(sizeof(zero_space),space_to_write);
 966
 967                 retlen = SMB_VFS_WRITE(fsp,(char *)zero_space,current_len_to_write);
 968                 if (retlen <= 0)
 969                         return -1;
 970
 971                 space_to_write -= retlen;
 972         }
 973
 974         /* Seek to where we were */
 975         if (SMB_VFS_LSEEK(fsp, currpos, SEEK_SET) != currpos)
 976                 return -1;
 977
 978         return 0;
 979 }
 980
 981 static int vfswrap_ftruncate(vfs_handle_struct *handle, files_struct *fsp, SMB_OFF_T len)
 982 {
 983         int result = -1;
 984         SMB_STRUCT_STAT st;
 985         char c = 0;
 986         SMB_OFF_T currpos;
 987
 988         START_PROFILE(syscall_ftruncate);
 989
 990         if (lp_strict_allocate(SNUM(fsp->conn))) {
 991                 result = strict_allocate_ftruncate(handle, fsp, len);
 992                 END_PROFILE(syscall_ftruncate);
 993                 return result;
 994         }
 995
 996         /* we used to just check HAVE_FTRUNCATE_EXTEND and only use
 997            sys_ftruncate if the system supports it. Then I discovered that
 998            you can have some filesystems that support ftruncate
 999            expansion and some that don't! On Linux fat can't do
1000            ftruncate extend but ext2 can. */
1001
1002         result = sys_ftruncate(fsp->fh->fd, len);
1003         if (result == 0)
1004                 goto done;
1005
1006         /* According to W. R. Stevens advanced UNIX prog. Pure 4.3 BSD cannot
1007            extend a file with ftruncate. Provide alternate implementation
1008            for this */
1009         currpos = SMB_VFS_LSEEK(fsp, 0, SEEK_CUR);
1010         if (currpos == -1) {
1011                 goto done;
1012         }
1013
1014         /* Do an fstat to see if the file is longer than the requested
1015            size in which case the ftruncate above should have
1016            succeeded or shorter, in which case seek to len - 1 and
1017            write 1 byte of zero */
1018         if (SMB_VFS_FSTAT(fsp, &st) == -1) {
1019                 goto done;
1020         }
1021
1022 #ifdef S_ISFIFO
1023         if (S_ISFIFO(st.st_ex_mode)) {
1024                 result = 0;
1025                 goto done;
1026         }
1027 #endif
1028
1029         if (st.st_ex_size == len) {
1030                 result = 0;
1031                 goto done;
1032         }
1033
1034         if (st.st_ex_size > len) {
1035                 /* the sys_ftruncate should have worked */
1036                 goto done;
1037         }
1038
1039         if (SMB_VFS_LSEEK(fsp, len-1, SEEK_SET) != len -1)
1040                 goto done;
1041
1042         if (SMB_VFS_WRITE(fsp, &c, 1)!=1)
1043                 goto done;
1044
1045         /* Seek to where we were */
1046         if (SMB_VFS_LSEEK(fsp, currpos, SEEK_SET) != currpos)
1047                 goto done;
1048         result = 0;
1049
1050   done:
1051
1052         END_PROFILE(syscall_ftruncate);
1053         return result;
1054 }
1055
1056 static bool vfswrap_lock(vfs_handle_struct *handle, files_struct *fsp, int op, SMB_OFF_T offset, SMB_OFF_T count, int type)
1057 {
1058         bool result;
1059
1060         START_PROFILE(syscall_fcntl_lock);
1061         result =  fcntl_lock(fsp->fh->fd, op, offset, count, type);
1062         END_PROFILE(syscall_fcntl_lock);
1063         return result;
1064 }
1065
1066 static int vfswrap_kernel_flock(vfs_handle_struct *handle, files_struct *fsp,
1067                                 uint32 share_mode, uint32 access_mask)
1068 {
1069         START_PROFILE(syscall_kernel_flock);
1070         kernel_flock(fsp->fh->fd, share_mode, access_mask);
1071         END_PROFILE(syscall_kernel_flock);
1072         return 0;
1073 }
1074
1075 static bool vfswrap_getlock(vfs_handle_struct *handle, files_struct *fsp, SMB_OFF_T *poffset, SMB_OFF_T *pcount, int *ptype, pid_t *ppid)
1076 {
1077         bool result;
1078
1079         START_PROFILE(syscall_fcntl_getlock);
1080         result =  fcntl_getlock(fsp->fh->fd, poffset, pcount, ptype, ppid);
1081         END_PROFILE(syscall_fcntl_getlock);
1082         return result;
1083 }
1084
1085 static int vfswrap_linux_setlease(vfs_handle_struct *handle, files_struct *fsp,
1086                                 int leasetype)
1087 {
1088         int result = -1;
1089
1090         START_PROFILE(syscall_linux_setlease);
1091
1092 #ifdef HAVE_KERNEL_OPLOCKS_LINUX
1093         /* first set the signal handler */
1094         if(linux_set_lease_sighandler(fsp->fh->fd) == -1) {
1095                 return -1;
1096         }
1097
1098         result = linux_setlease(fsp->fh->fd, leasetype);
1099 #else
1100         errno = ENOSYS;
1101 #endif
1102         END_PROFILE(syscall_linux_setlease);
1103         return result;
1104 }
1105
1106 static int vfswrap_symlink(vfs_handle_struct *handle,  const char *oldpath, const char *newpath)
1107 {
1108         int result;
1109
1110         START_PROFILE(syscall_symlink);
1111         result = symlink(oldpath, newpath);
1112         END_PROFILE(syscall_symlink);
1113         return result;
1114 }
1115
1116 static int vfswrap_readlink(vfs_handle_struct *handle,  const char *path, char *buf, size_t bufsiz)
1117 {
1118         int result;
1119
1120         START_PROFILE(syscall_readlink);
1121         result = readlink(path, buf, bufsiz);
1122         END_PROFILE(syscall_readlink);
1123         return result;
1124 }
1125
1126 static int vfswrap_link(vfs_handle_struct *handle,  const char *oldpath, const char *newpath)
1127 {
1128         int result;
1129
1130         START_PROFILE(syscall_link);
1131         result = link(oldpath, newpath);
1132         END_PROFILE(syscall_link);
1133         return result;
1134 }
1135
1136 static int vfswrap_mknod(vfs_handle_struct *handle,  const char *pathname, mode_t mode, SMB_DEV_T dev)
1137 {
1138         int result;
1139
1140         START_PROFILE(syscall_mknod);
1141         result = sys_mknod(pathname, mode, dev);
1142         END_PROFILE(syscall_mknod);
1143         return result;
1144 }
1145
1146 static char *vfswrap_realpath(vfs_handle_struct *handle,  const char *path, char *resolved_path)
1147 {
1148         char *result;
1149
1150         START_PROFILE(syscall_realpath);
1151         result = realpath(path, resolved_path);
1152         END_PROFILE(syscall_realpath);
1153         return result;
1154 }
1155
1156 static NTSTATUS vfswrap_notify_watch(vfs_handle_struct *vfs_handle,
1157                                      struct sys_notify_context *ctx,
1158                                      struct notify_entry *e,
1159                                      void (*callback)(struct sys_notify_context *ctx,
1160                                                       void *private_data,
1161                                                       struct notify_event *ev),
1162                                      void *private_data, void *handle)
1163 {
1164         /*
1165          * So far inotify is the only supported default notify mechanism. If
1166          * another platform like the the BSD's or a proprietary Unix comes
1167          * along and wants another default, we can play the same trick we
1168          * played with Posix ACLs.
1169          *
1170          * Until that is the case, hard-code inotify here.
1171          */
1172 #ifdef HAVE_INOTIFY
1173         if (lp_kernel_change_notify(ctx->conn->params)) {
1174                 return inotify_watch(ctx, e, callback, private_data, handle);
1175         }
1176 #endif
1177         /*
1178          * Do nothing, leave everything to notify_internal.c
1179          */
1180         return NT_STATUS_OK;
1181 }
1182
1183 static int vfswrap_chflags(vfs_handle_struct *handle, const char *path,
1184                            unsigned int flags)
1185 {
1186 #ifdef HAVE_CHFLAGS
1187         return chflags(path, flags);
1188 #else
1189         errno = ENOSYS;
1190         return -1;
1191 #endif
1192 }
1193
1194 static struct file_id vfswrap_file_id_create(struct vfs_handle_struct *handle,
1195                                              const SMB_STRUCT_STAT *sbuf)
1196 {
1197         struct file_id key;
1198
1199         /* the ZERO_STRUCT ensures padding doesn't break using the key as a
1200          * blob */
1201         ZERO_STRUCT(key);
1202
1203         key.devid = sbuf->st_ex_dev;
1204         key.inode = sbuf->st_ex_ino;
1205         /* key.extid is unused by default. */
1206
1207         return key;
1208 }
1209
1210 static NTSTATUS vfswrap_streaminfo(vfs_handle_struct *handle,
1211                                    struct files_struct *fsp,
1212                                    const char *fname,
1213                                    TALLOC_CTX *mem_ctx,
1214                                    unsigned int *pnum_streams,
1215                                    struct stream_struct **pstreams)
1216 {
1217         SMB_STRUCT_STAT sbuf;
1218         unsigned int num_streams = 0;
1219         struct stream_struct *streams = NULL;
1220         int ret;
1221
1222         if ((fsp != NULL) && (fsp->is_directory)) {
1223                 /*
1224                  * No default streams on directories
1225                  */
1226                 goto done;
1227         }
1228
1229         if ((fsp != NULL) && (fsp->fh->fd != -1)) {
1230                 ret = SMB_VFS_FSTAT(fsp, &sbuf);
1231         }
1232         else {
1233                 struct smb_filename *smb_fname = NULL;
1234                 NTSTATUS status;
1235
1236                 status = create_synthetic_smb_fname(talloc_tos(), fname, NULL,
1237                                                     NULL, &smb_fname);
1238                 if (!NT_STATUS_IS_OK(status)) {
1239                         return status;
1240                 }
1241                 if (lp_posix_pathnames()) {
1242                         ret = SMB_VFS_LSTAT(handle->conn, smb_fname);
1243                 } else {
1244                         ret = SMB_VFS_STAT(handle->conn, smb_fname);
1245                 }
1246                 sbuf = smb_fname->st;
1247                 TALLOC_FREE(smb_fname);
1248         }
1249
1250         if (ret == -1) {
1251                 return map_nt_error_from_unix(errno);
1252         }
1253
1254         if (S_ISDIR(sbuf.st_ex_mode)) {
1255                 goto done;
1256         }
1257
1258         streams = talloc(mem_ctx, struct stream_struct);
1259
1260         if (streams == NULL) {
1261                 return NT_STATUS_NO_MEMORY;
1262         }
1263
1264         streams->size = sbuf.st_ex_size;
1265         streams->alloc_size = SMB_VFS_GET_ALLOC_SIZE(handle->conn, fsp, &sbuf);
1266
1267         streams->name = talloc_strdup(streams, "::$DATA");
1268         if (streams->name == NULL) {
1269                 TALLOC_FREE(streams);
1270                 return NT_STATUS_NO_MEMORY;
1271         }
1272
1273         num_streams = 1;
1274  done:
1275         *pnum_streams = num_streams;
1276         *pstreams = streams;
1277         return NT_STATUS_OK;
1278 }
1279
1280 static int vfswrap_get_real_filename(struct vfs_handle_struct *handle,
1281                                      const char *path,
1282                                      const char *name,
1283                                      TALLOC_CTX *mem_ctx,
1284                                      char **found_name)
1285 {
1286         /*
1287          * Don't fall back to get_real_filename so callers can differentiate
1288          * between a full directory scan and an actual case-insensitive stat.
1289          */
1290         errno = EOPNOTSUPP;
1291         return -1;
1292 }
1293
1294 static const char *vfswrap_connectpath(struct vfs_handle_struct *handle,
1295                                        const char *fname)
1296 {
1297         return handle->conn->connectpath;
1298 }
1299
1300 static NTSTATUS vfswrap_brl_lock_windows(struct vfs_handle_struct *handle,
1301                                          struct byte_range_lock *br_lck,
1302                                          struct lock_struct *plock,
1303                                          bool blocking_lock,
1304                                          struct blocking_lock_record *blr)
1305 {
1306         SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
1307
1308         /* Note: blr is not used in the default implementation. */
1309         return brl_lock_windows_default(br_lck, plock, blocking_lock);
1310 }
1311
1312 static bool vfswrap_brl_unlock_windows(struct vfs_handle_struct *handle,
1313                                        struct messaging_context *msg_ctx,
1314                                        struct byte_range_lock *br_lck,
1315                                        const struct lock_struct *plock)
1316 {
1317         SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
1318
1319         return brl_unlock_windows_default(msg_ctx, br_lck, plock);
1320 }
1321
1322 static bool vfswrap_brl_cancel_windows(struct vfs_handle_struct *handle,
1323                                        struct byte_range_lock *br_lck,
1324                                        struct lock_struct *plock,
1325                                        struct blocking_lock_record *blr)
1326 {
1327         SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
1328
1329         /* Note: blr is not used in the default implementation. */
1330         return brl_lock_cancel_default(br_lck, plock);
1331 }
1332
1333 static bool vfswrap_strict_lock(struct vfs_handle_struct *handle,
1334                                 files_struct *fsp,
1335                                 struct lock_struct *plock)
1336 {
1337         SMB_ASSERT(plock->lock_type == READ_LOCK ||
1338             plock->lock_type == WRITE_LOCK);
1339
1340         return strict_lock_default(fsp, plock);
1341 }
1342
1343 static void vfswrap_strict_unlock(struct vfs_handle_struct *handle,
1344                                 files_struct *fsp,
1345                                 struct lock_struct *plock)
1346 {
1347         SMB_ASSERT(plock->lock_type == READ_LOCK ||
1348             plock->lock_type == WRITE_LOCK);
1349
1350         strict_unlock_default(fsp, plock);
1351 }
1352
1353 /* NT ACL operations. */
1354
1355 static NTSTATUS vfswrap_fget_nt_acl(vfs_handle_struct *handle,
1356                                     files_struct *fsp,
1357                                     uint32 security_info, SEC_DESC **ppdesc)
1358 {
1359         NTSTATUS result;
1360
1361         START_PROFILE(fget_nt_acl);
1362         result = posix_fget_nt_acl(fsp, security_info, ppdesc);
1363         END_PROFILE(fget_nt_acl);
1364         return result;
1365 }
1366
1367 static NTSTATUS vfswrap_get_nt_acl(vfs_handle_struct *handle,
1368                                    const char *name,
1369                                    uint32 security_info, SEC_DESC **ppdesc)
1370 {
1371         NTSTATUS result;
1372
1373         START_PROFILE(get_nt_acl);
1374         result = posix_get_nt_acl(handle->conn, name, security_info, ppdesc);
1375         END_PROFILE(get_nt_acl);
1376         return result;
1377 }
1378
1379 static NTSTATUS vfswrap_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const SEC_DESC *psd)
1380 {
1381         NTSTATUS result;
1382
1383         START_PROFILE(fset_nt_acl);
1384         result = set_nt_acl(fsp, security_info_sent, psd);
1385         END_PROFILE(fset_nt_acl);
1386         return result;
1387 }
1388
1389 static int vfswrap_chmod_acl(vfs_handle_struct *handle,  const char *name, mode_t mode)
1390 {
1391 #ifdef HAVE_NO_ACL
1392         errno = ENOSYS;
1393         return -1;
1394 #else
1395         int result;
1396
1397         START_PROFILE(chmod_acl);
1398         result = chmod_acl(handle->conn, name, mode);
1399         END_PROFILE(chmod_acl);
1400         return result;
1401 #endif
1402 }
1403
1404 static int vfswrap_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
1405 {
1406 #ifdef HAVE_NO_ACL
1407         errno = ENOSYS;
1408         return -1;
1409 #else
1410         int result;
1411
1412         START_PROFILE(fchmod_acl);
1413         result = fchmod_acl(fsp, mode);
1414         END_PROFILE(fchmod_acl);
1415         return result;
1416 #endif
1417 }
1418
1419 static int vfswrap_sys_acl_get_entry(vfs_handle_struct *handle,  SMB_ACL_T theacl, int entry_id, SMB_ACL_ENTRY_T *entry_p)
1420 {
1421         return sys_acl_get_entry(theacl, entry_id, entry_p);
1422 }
1423
1424 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)
1425 {
1426         return sys_acl_get_tag_type(entry_d, tag_type_p);
1427 }
1428
1429 static int vfswrap_sys_acl_get_permset(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry_d, SMB_ACL_PERMSET_T *permset_p)
1430 {
1431         return sys_acl_get_permset(entry_d, permset_p);
1432 }
1433
1434 static void * vfswrap_sys_acl_get_qualifier(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry_d)
1435 {
1436         return sys_acl_get_qualifier(entry_d);
1437 }
1438
1439 static SMB_ACL_T vfswrap_sys_acl_get_file(vfs_handle_struct *handle,  const char *path_p, SMB_ACL_TYPE_T type)
1440 {
1441         return sys_acl_get_file(handle, path_p, type);
1442 }
1443
1444 static SMB_ACL_T vfswrap_sys_acl_get_fd(vfs_handle_struct *handle, files_struct *fsp)
1445 {
1446         return sys_acl_get_fd(handle, fsp);
1447 }
1448
1449 static int vfswrap_sys_acl_clear_perms(vfs_handle_struct *handle,  SMB_ACL_PERMSET_T permset)
1450 {
1451         return sys_acl_clear_perms(permset);
1452 }
1453
1454 static int vfswrap_sys_acl_add_perm(vfs_handle_struct *handle,  SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm)
1455 {
1456         return sys_acl_add_perm(permset, perm);
1457 }
1458
1459 static char * vfswrap_sys_acl_to_text(vfs_handle_struct *handle,  SMB_ACL_T theacl, ssize_t *plen)
1460 {
1461         return sys_acl_to_text(theacl, plen);
1462 }
1463
1464 static SMB_ACL_T vfswrap_sys_acl_init(vfs_handle_struct *handle,  int count)
1465 {
1466         return sys_acl_init(count);
1467 }
1468
1469 static int vfswrap_sys_acl_create_entry(vfs_handle_struct *handle,  SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry)
1470 {
1471         return sys_acl_create_entry(pacl, pentry);
1472 }
1473
1474 static int vfswrap_sys_acl_set_tag_type(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry, SMB_ACL_TAG_T tagtype)
1475 {
1476         return sys_acl_set_tag_type(entry, tagtype);
1477 }
1478
1479 static int vfswrap_sys_acl_set_qualifier(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry, void *qual)
1480 {
1481         return sys_acl_set_qualifier(entry, qual);
1482 }
1483
1484 static int vfswrap_sys_acl_set_permset(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry, SMB_ACL_PERMSET_T permset)
1485 {
1486         return sys_acl_set_permset(entry, permset);
1487 }
1488
1489 static int vfswrap_sys_acl_valid(vfs_handle_struct *handle,  SMB_ACL_T theacl )
1490 {
1491         return sys_acl_valid(theacl );
1492 }
1493
1494 static int vfswrap_sys_acl_set_file(vfs_handle_struct *handle,  const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl)
1495 {
1496         return sys_acl_set_file(handle, name, acltype, theacl);
1497 }
1498
1499 static int vfswrap_sys_acl_set_fd(vfs_handle_struct *handle, files_struct *fsp, SMB_ACL_T theacl)
1500 {
1501         return sys_acl_set_fd(handle, fsp, theacl);
1502 }
1503
1504 static int vfswrap_sys_acl_delete_def_file(vfs_handle_struct *handle,  const char *path)
1505 {
1506         return sys_acl_delete_def_file(handle, path);
1507 }
1508
1509 static int vfswrap_sys_acl_get_perm(vfs_handle_struct *handle,  SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm)
1510 {
1511         return sys_acl_get_perm(permset, perm);
1512 }
1513
1514 static int vfswrap_sys_acl_free_text(vfs_handle_struct *handle,  char *text)
1515 {
1516         return sys_acl_free_text(text);
1517 }
1518
1519 static int vfswrap_sys_acl_free_acl(vfs_handle_struct *handle,  SMB_ACL_T posix_acl)
1520 {
1521         return sys_acl_free_acl(posix_acl);
1522 }
1523
1524 static int vfswrap_sys_acl_free_qualifier(vfs_handle_struct *handle,  void *qualifier, SMB_ACL_TAG_T tagtype)
1525 {
1526         return sys_acl_free_qualifier(qualifier, tagtype);
1527 }
1528
1529 /****************************************************************
1530  Extended attribute operations.
1531 *****************************************************************/
1532
1533 static ssize_t vfswrap_getxattr(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size)
1534 {
1535         return sys_getxattr(path, name, value, size);
1536 }
1537
1538 static ssize_t vfswrap_lgetxattr(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size)
1539 {
1540         return sys_lgetxattr(path, name, value, size);
1541 }
1542
1543 static ssize_t vfswrap_fgetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size)
1544 {
1545         return sys_fgetxattr(fsp->fh->fd, name, value, size);
1546 }
1547
1548 static ssize_t vfswrap_listxattr(struct vfs_handle_struct *handle, const char *path, char *list, size_t size)
1549 {
1550         return sys_listxattr(path, list, size);
1551 }
1552
1553 ssize_t vfswrap_llistxattr(struct vfs_handle_struct *handle, const char *path, char *list, size_t size)
1554 {
1555         return sys_llistxattr(path, list, size);
1556 }
1557
1558 ssize_t vfswrap_flistxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size)
1559 {
1560         return sys_flistxattr(fsp->fh->fd, list, size);
1561 }
1562
1563 static int vfswrap_removexattr(struct vfs_handle_struct *handle, const char *path, const char *name)
1564 {
1565         return sys_removexattr(path, name);
1566 }
1567
1568 static int vfswrap_lremovexattr(struct vfs_handle_struct *handle, const char *path, const char *name)
1569 {
1570         return sys_lremovexattr(path, name);
1571 }
1572
1573 static int vfswrap_fremovexattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name)
1574 {
1575         return sys_fremovexattr(fsp->fh->fd, name);
1576 }
1577
1578 static int vfswrap_setxattr(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags)
1579 {
1580         return sys_setxattr(path, name, value, size, flags);
1581 }
1582
1583 static int vfswrap_lsetxattr(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags)
1584 {
1585         return sys_lsetxattr(path, name, value, size, flags);
1586 }
1587
1588 static int vfswrap_fsetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags)
1589 {
1590         return sys_fsetxattr(fsp->fh->fd, name, value, size, flags);
1591 }
1592
1593 static int vfswrap_aio_read(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1594 {
1595         int ret;
1596         /*
1597          * aio_read must be done as root, because in the glibc aio
1598          * implementation the helper thread needs to be able to send a signal
1599          * to the main thread, even when it has done a seteuid() to a
1600          * different user.
1601          */
1602         become_root();
1603         ret = sys_aio_read(aiocb);
1604         unbecome_root();
1605         return ret;
1606 }
1607
1608 static int vfswrap_aio_write(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1609 {
1610         int ret;
1611         /*
1612          * aio_write must be done as root, because in the glibc aio
1613          * implementation the helper thread needs to be able to send a signal
1614          * to the main thread, even when it has done a seteuid() to a
1615          * different user.
1616          */
1617         become_root();
1618         ret = sys_aio_write(aiocb);
1619         unbecome_root();
1620         return ret;
1621 }
1622
1623 static ssize_t vfswrap_aio_return(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1624 {
1625         return sys_aio_return(aiocb);
1626 }
1627
1628 static int vfswrap_aio_cancel(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1629 {
1630         return sys_aio_cancel(fsp->fh->fd, aiocb);
1631 }
1632
1633 static int vfswrap_aio_error(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1634 {
1635         return sys_aio_error(aiocb);
1636 }
1637
1638 static int vfswrap_aio_fsync(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, SMB_STRUCT_AIOCB *aiocb)
1639 {
1640         return sys_aio_fsync(op, aiocb);
1641 }
1642
1643 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)
1644 {
1645         return sys_aio_suspend(aiocb, n, timeout);
1646 }
1647
1648 static bool vfswrap_aio_force(struct vfs_handle_struct *handle, struct files_struct *fsp)
1649 {
1650         return false;
1651 }
1652
1653 static bool vfswrap_is_offline(struct vfs_handle_struct *handle, const char *path, SMB_STRUCT_STAT *sbuf)
1654 {
1655         if (ISDOT(path) || ISDOTDOT(path)) {
1656                 return false;
1657         }
1658
1659         if (!lp_dmapi_support(SNUM(handle->conn)) || !dmapi_have_session()) {
1660 #if defined(ENOTSUP)
1661                 errno = ENOTSUP;
1662 #endif
1663                 return false;
1664         }
1665
1666         return (dmapi_file_flags(path) & FILE_ATTRIBUTE_OFFLINE) != 0;
1667 }
1668
1669 static int vfswrap_set_offline(struct vfs_handle_struct *handle, const char *path)
1670 {
1671         /* We don't know how to set offline bit by default, needs to be overriden in the vfs modules */
1672 #if defined(ENOTSUP)
1673         errno = ENOTSUP;
1674 #endif
1675         return -1;
1676 }
1677
1678 static struct vfs_fn_pointers vfs_default_fns = {
1679         /* Disk operations */
1680
1681         .connect_fn = vfswrap_connect,
1682         .disconnect = vfswrap_disconnect,
1683         .disk_free = vfswrap_disk_free,
1684         .get_quota = vfswrap_get_quota,
1685         .set_quota = vfswrap_set_quota,
1686         .get_shadow_copy_data = vfswrap_get_shadow_copy_data,
1687         .statvfs = vfswrap_statvfs,
1688         .fs_capabilities = vfswrap_fs_capabilities,
1689
1690         /* Directory operations */
1691
1692         .opendir = vfswrap_opendir,
1693         .readdir = vfswrap_readdir,
1694         .seekdir = vfswrap_seekdir,
1695         .telldir = vfswrap_telldir,
1696         .rewind_dir = vfswrap_rewinddir,
1697         .mkdir = vfswrap_mkdir,
1698         .rmdir = vfswrap_rmdir,
1699         .closedir = vfswrap_closedir,
1700         .init_search_op = vfswrap_init_search_op,
1701
1702         /* File operations */
1703
1704         .open = vfswrap_open,
1705         .create_file = vfswrap_create_file,
1706         .close_fn = vfswrap_close,
1707         .vfs_read = vfswrap_read,
1708         .pread = vfswrap_pread,
1709         .write = vfswrap_write,
1710         .pwrite = vfswrap_pwrite,
1711         .lseek = vfswrap_lseek,
1712         .sendfile = vfswrap_sendfile,
1713         .recvfile = vfswrap_recvfile,
1714         .rename = vfswrap_rename,
1715         .fsync = vfswrap_fsync,
1716         .stat = vfswrap_stat,
1717         .fstat = vfswrap_fstat,
1718         .lstat = vfswrap_lstat,
1719         .get_alloc_size = vfswrap_get_alloc_size,
1720         .unlink = vfswrap_unlink,
1721         .chmod = vfswrap_chmod,
1722         .fchmod = vfswrap_fchmod,
1723         .chown = vfswrap_chown,
1724         .fchown = vfswrap_fchown,
1725         .lchown = vfswrap_lchown,
1726         .chdir = vfswrap_chdir,
1727         .getwd = vfswrap_getwd,
1728         .ntimes = vfswrap_ntimes,
1729         .ftruncate = vfswrap_ftruncate,
1730         .lock = vfswrap_lock,
1731         .kernel_flock = vfswrap_kernel_flock,
1732         .linux_setlease = vfswrap_linux_setlease,
1733         .getlock = vfswrap_getlock,
1734         .symlink = vfswrap_symlink,
1735         .vfs_readlink = vfswrap_readlink,
1736         .link = vfswrap_link,
1737         .mknod = vfswrap_mknod,
1738         .realpath = vfswrap_realpath,
1739         .notify_watch = vfswrap_notify_watch,
1740         .chflags = vfswrap_chflags,
1741         .file_id_create = vfswrap_file_id_create,
1742         .streaminfo = vfswrap_streaminfo,
1743         .get_real_filename = vfswrap_get_real_filename,
1744         .connectpath = vfswrap_connectpath,
1745         .brl_lock_windows = vfswrap_brl_lock_windows,
1746         .brl_unlock_windows = vfswrap_brl_unlock_windows,
1747         .brl_cancel_windows = vfswrap_brl_cancel_windows,
1748         .strict_lock = vfswrap_strict_lock,
1749         .strict_unlock = vfswrap_strict_unlock,
1750         .translate_name = vfswrap_translate_name,
1751
1752         /* NT ACL operations. */
1753
1754         .fget_nt_acl = vfswrap_fget_nt_acl,
1755         .get_nt_acl = vfswrap_get_nt_acl,
1756         .fset_nt_acl = vfswrap_fset_nt_acl,
1757
1758         /* POSIX ACL operations. */
1759
1760         .chmod_acl = vfswrap_chmod_acl,
1761         .fchmod_acl = vfswrap_fchmod_acl,
1762
1763         .sys_acl_get_entry = vfswrap_sys_acl_get_entry,
1764         .sys_acl_get_tag_type = vfswrap_sys_acl_get_tag_type,
1765         .sys_acl_get_permset = vfswrap_sys_acl_get_permset,
1766         .sys_acl_get_qualifier = vfswrap_sys_acl_get_qualifier,
1767         .sys_acl_get_file = vfswrap_sys_acl_get_file,
1768         .sys_acl_get_fd = vfswrap_sys_acl_get_fd,
1769         .sys_acl_clear_perms = vfswrap_sys_acl_clear_perms,
1770         .sys_acl_add_perm = vfswrap_sys_acl_add_perm,
1771         .sys_acl_to_text = vfswrap_sys_acl_to_text,
1772         .sys_acl_init = vfswrap_sys_acl_init,
1773         .sys_acl_create_entry = vfswrap_sys_acl_create_entry,
1774         .sys_acl_set_tag_type = vfswrap_sys_acl_set_tag_type,
1775         .sys_acl_set_qualifier = vfswrap_sys_acl_set_qualifier,
1776         .sys_acl_set_permset = vfswrap_sys_acl_set_permset,
1777         .sys_acl_valid = vfswrap_sys_acl_valid,
1778         .sys_acl_set_file = vfswrap_sys_acl_set_file,
1779         .sys_acl_set_fd = vfswrap_sys_acl_set_fd,
1780         .sys_acl_delete_def_file = vfswrap_sys_acl_delete_def_file,
1781         .sys_acl_get_perm = vfswrap_sys_acl_get_perm,
1782         .sys_acl_free_text = vfswrap_sys_acl_free_text,
1783         .sys_acl_free_acl = vfswrap_sys_acl_free_acl,
1784         .sys_acl_free_qualifier = vfswrap_sys_acl_free_qualifier,
1785
1786         /* EA operations. */
1787         .getxattr = vfswrap_getxattr,
1788         .lgetxattr = vfswrap_lgetxattr,
1789         .fgetxattr = vfswrap_fgetxattr,
1790         .listxattr = vfswrap_listxattr,
1791         .llistxattr = vfswrap_llistxattr,
1792         .flistxattr = vfswrap_flistxattr,
1793         .removexattr = vfswrap_removexattr,
1794         .lremovexattr = vfswrap_lremovexattr,
1795         .fremovexattr = vfswrap_fremovexattr,
1796         .setxattr = vfswrap_setxattr,
1797         .lsetxattr = vfswrap_lsetxattr,
1798         .fsetxattr = vfswrap_fsetxattr,
1799
1800         /* aio operations */
1801         .aio_read = vfswrap_aio_read,
1802         .aio_write = vfswrap_aio_write,
1803         .aio_return_fn = vfswrap_aio_return,
1804         .aio_cancel = vfswrap_aio_cancel,
1805         .aio_error_fn = vfswrap_aio_error,
1806         .aio_fsync = vfswrap_aio_fsync,
1807         .aio_suspend = vfswrap_aio_suspend,
1808         .aio_force = vfswrap_aio_force,
1809
1810         /* offline operations */
1811         .is_offline = vfswrap_is_offline,
1812         .set_offline = vfswrap_set_offline
1813 };
1814
1815 NTSTATUS vfs_default_init(void);
1816 NTSTATUS vfs_default_init(void)
1817 {
1818         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
1819                                 DEFAULT_VFS_MODULE_NAME, &vfs_default_fns);
1820 }
1821
1822