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->params->service),
 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 & lp_dir_mask(SNUM(handle->conn)));
 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                                     uint32_t private_flags,
 302                                     struct security_descriptor *sd,
 303                                     struct ea_list *ea_list,
 304                                     files_struct **result,
 305                                     int *pinfo)
 306 {
 307         return create_file_default(handle->conn, req, root_dir_fid, smb_fname,
 308                                    access_mask, share_access,
 309                                    create_disposition, create_options,
 310                                    file_attributes, oplock_request,
 311                                    allocation_size, private_flags,
 312                                    sd, ea_list, result,
 313                                    pinfo);
 314 }
 315
 316 static int vfswrap_close(vfs_handle_struct *handle, files_struct *fsp)
 317 {
 318         int result;
 319
 320         START_PROFILE(syscall_close);
 321         result = fd_close_posix(fsp);
 322         END_PROFILE(syscall_close);
 323         return result;
 324 }
 325
 326 static ssize_t vfswrap_read(vfs_handle_struct *handle, files_struct *fsp, void *data, size_t n)
 327 {
 328         ssize_t result;
 329
 330         START_PROFILE_BYTES(syscall_read, n);
 331         result = sys_read(fsp->fh->fd, data, n);
 332         END_PROFILE(syscall_read);
 333         return result;
 334 }
 335
 336 static ssize_t vfswrap_pread(vfs_handle_struct *handle, files_struct *fsp, void *data,
 337                         size_t n, SMB_OFF_T offset)
 338 {
 339         ssize_t result;
 340
 341 #if defined(HAVE_PREAD) || defined(HAVE_PREAD64)
 342         START_PROFILE_BYTES(syscall_pread, n);
 343         result = sys_pread(fsp->fh->fd, data, n, offset);
 344         END_PROFILE(syscall_pread);
 345
 346         if (result == -1 && errno == ESPIPE) {
 347                 /* Maintain the fiction that pipes can be seeked (sought?) on. */
 348                 result = SMB_VFS_READ(fsp, data, n);
 349                 fsp->fh->pos = 0;
 350         }
 351
 352 #else /* HAVE_PREAD */
 353         SMB_OFF_T   curr;
 354         int lerrno;
 355
 356         curr = SMB_VFS_LSEEK(fsp, 0, SEEK_CUR);
 357         if (curr == -1 && errno == ESPIPE) {
 358                 /* Maintain the fiction that pipes can be seeked (sought?) on. */
 359                 result = SMB_VFS_READ(fsp, data, n);
 360                 fsp->fh->pos = 0;
 361                 return result;
 362         }
 363
 364         if (SMB_VFS_LSEEK(fsp, offset, SEEK_SET) == -1) {
 365                 return -1;
 366         }
 367
 368         errno = 0;
 369         result = SMB_VFS_READ(fsp, data, n);
 370         lerrno = errno;
 371
 372         SMB_VFS_LSEEK(fsp, curr, SEEK_SET);
 373         errno = lerrno;
 374
 375 #endif /* HAVE_PREAD */
 376
 377         return result;
 378 }
 379
 380 static ssize_t vfswrap_write(vfs_handle_struct *handle, files_struct *fsp, const void *data, size_t n)
 381 {
 382         ssize_t result;
 383
 384         START_PROFILE_BYTES(syscall_write, n);
 385         result = sys_write(fsp->fh->fd, data, n);
 386         END_PROFILE(syscall_write);
 387         return result;
 388 }
 389
 390 static ssize_t vfswrap_pwrite(vfs_handle_struct *handle, files_struct *fsp, const void *data,
 391                         size_t n, SMB_OFF_T offset)
 392 {
 393         ssize_t result;
 394
 395 #if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
 396         START_PROFILE_BYTES(syscall_pwrite, n);
 397         result = sys_pwrite(fsp->fh->fd, data, n, offset);
 398         END_PROFILE(syscall_pwrite);
 399
 400         if (result == -1 && errno == ESPIPE) {
 401                 /* Maintain the fiction that pipes can be sought on. */
 402                 result = SMB_VFS_WRITE(fsp, data, n);
 403         }
 404
 405 #else /* HAVE_PWRITE */
 406         SMB_OFF_T   curr;
 407         int         lerrno;
 408
 409         curr = SMB_VFS_LSEEK(fsp, 0, SEEK_CUR);
 410         if (curr == -1) {
 411                 return -1;
 412         }
 413
 414         if (SMB_VFS_LSEEK(fsp, offset, SEEK_SET) == -1) {
 415                 return -1;
 416         }
 417
 418         result = SMB_VFS_WRITE(fsp, data, n);
 419         lerrno = errno;
 420
 421         SMB_VFS_LSEEK(fsp, curr, SEEK_SET);
 422         errno = lerrno;
 423
 424 #endif /* HAVE_PWRITE */
 425
 426         return result;
 427 }
 428
 429 static SMB_OFF_T vfswrap_lseek(vfs_handle_struct *handle, files_struct *fsp, SMB_OFF_T offset, int whence)
 430 {
 431         SMB_OFF_T result = 0;
 432
 433         START_PROFILE(syscall_lseek);
 434
 435         /* Cope with 'stat' file opens. */
 436         if (fsp->fh->fd != -1)
 437                 result = sys_lseek(fsp->fh->fd, offset, whence);
 438
 439         /*
 440          * We want to maintain the fiction that we can seek
 441          * on a fifo for file system purposes. This allows
 442          * people to set up UNIX fifo's that feed data to Windows
 443          * applications. JRA.
 444          */
 445
 446         if((result == -1) && (errno == ESPIPE)) {
 447                 result = 0;
 448                 errno = 0;
 449         }
 450
 451         END_PROFILE(syscall_lseek);
 452         return result;
 453 }
 454
 455 static ssize_t vfswrap_sendfile(vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *hdr,
 456                         SMB_OFF_T offset, size_t n)
 457 {
 458         ssize_t result;
 459
 460         START_PROFILE_BYTES(syscall_sendfile, n);
 461         result = sys_sendfile(tofd, fromfsp->fh->fd, hdr, offset, n);
 462         END_PROFILE(syscall_sendfile);
 463         return result;
 464 }
 465
 466 static ssize_t vfswrap_recvfile(vfs_handle_struct *handle,
 467                         int fromfd,
 468                         files_struct *tofsp,
 469                         SMB_OFF_T offset,
 470                         size_t n)
 471 {
 472         ssize_t result;
 473
 474         START_PROFILE_BYTES(syscall_recvfile, n);
 475         result = sys_recvfile(fromfd, tofsp->fh->fd, offset, n);
 476         END_PROFILE(syscall_recvfile);
 477         return result;
 478 }
 479
 480 static int vfswrap_rename(vfs_handle_struct *handle,
 481                           const struct smb_filename *smb_fname_src,
 482                           const struct smb_filename *smb_fname_dst)
 483 {
 484         int result = -1;
 485
 486         START_PROFILE(syscall_rename);
 487
 488         if (smb_fname_src->stream_name || smb_fname_dst->stream_name) {
 489                 errno = ENOENT;
 490                 goto out;
 491         }
 492
 493         result = rename(smb_fname_src->base_name, smb_fname_dst->base_name);
 494
 495  out:
 496         END_PROFILE(syscall_rename);
 497         return result;
 498 }
 499
 500 static int vfswrap_fsync(vfs_handle_struct *handle, files_struct *fsp)
 501 {
 502 #ifdef HAVE_FSYNC
 503         int result;
 504
 505         START_PROFILE(syscall_fsync);
 506         result = fsync(fsp->fh->fd);
 507         END_PROFILE(syscall_fsync);
 508         return result;
 509 #else
 510         return 0;
 511 #endif
 512 }
 513
 514 static int vfswrap_stat(vfs_handle_struct *handle,
 515                         struct smb_filename *smb_fname)
 516 {
 517         int result = -1;
 518
 519         START_PROFILE(syscall_stat);
 520
 521         if (smb_fname->stream_name) {
 522                 errno = ENOENT;
 523                 goto out;
 524         }
 525
 526         result = sys_stat(smb_fname->base_name, &smb_fname->st,
 527                           lp_fake_dir_create_times(SNUM(handle->conn)));
 528  out:
 529         END_PROFILE(syscall_stat);
 530         return result;
 531 }
 532
 533 static int vfswrap_fstat(vfs_handle_struct *handle, files_struct *fsp, SMB_STRUCT_STAT *sbuf)
 534 {
 535         int result;
 536
 537         START_PROFILE(syscall_fstat);
 538         result = sys_fstat(fsp->fh->fd,
 539                            sbuf, lp_fake_dir_create_times(SNUM(handle->conn)));
 540         END_PROFILE(syscall_fstat);
 541         return result;
 542 }
 543
 544 static int vfswrap_lstat(vfs_handle_struct *handle,
 545                          struct smb_filename *smb_fname)
 546 {
 547         int result = -1;
 548
 549         START_PROFILE(syscall_lstat);
 550
 551         if (smb_fname->stream_name) {
 552                 errno = ENOENT;
 553                 goto out;
 554         }
 555
 556         result = sys_lstat(smb_fname->base_name, &smb_fname->st,
 557                            lp_fake_dir_create_times(SNUM(handle->conn)));
 558  out:
 559         END_PROFILE(syscall_lstat);
 560         return result;
 561 }
 562
 563 static NTSTATUS vfswrap_translate_name(struct vfs_handle_struct *handle,
 564                                        const char *name,
 565                                        enum vfs_translate_direction direction,
 566                                        TALLOC_CTX *mem_ctx,
 567                                        char **mapped_name)
 568 {
 569         return NT_STATUS_NONE_MAPPED;
 570 }
 571
 572 /********************************************************************
 573  Given a stat buffer return the allocated size on disk, taking into
 574  account sparse files.
 575 ********************************************************************/
 576 static uint64_t vfswrap_get_alloc_size(vfs_handle_struct *handle,
 577                                        struct files_struct *fsp,
 578                                        const SMB_STRUCT_STAT *sbuf)
 579 {
 580         uint64_t result;
 581
 582         START_PROFILE(syscall_get_alloc_size);
 583
 584         if(S_ISDIR(sbuf->st_ex_mode)) {
 585                 result = 0;
 586                 goto out;
 587         }
 588
 589 #if defined(HAVE_STAT_ST_BLOCKS) && defined(STAT_ST_BLOCKSIZE)
 590         result = (uint64_t)STAT_ST_BLOCKSIZE * (uint64_t)sbuf->st_ex_blocks;
 591 #else
 592         result = get_file_size_stat(sbuf);
 593 #endif
 594
 595         if (fsp && fsp->initial_allocation_size)
 596                 result = MAX(result,fsp->initial_allocation_size);
 597
 598         result = smb_roundup(handle->conn, result);
 599
 600  out:
 601         END_PROFILE(syscall_get_alloc_size);
 602         return result;
 603 }
 604
 605 static int vfswrap_unlink(vfs_handle_struct *handle,
 606                           const struct smb_filename *smb_fname)
 607 {
 608         int result = -1;
 609
 610         START_PROFILE(syscall_unlink);
 611
 612         if (smb_fname->stream_name) {
 613                 errno = ENOENT;
 614                 goto out;
 615         }
 616         result = unlink(smb_fname->base_name);
 617
 618  out:
 619         END_PROFILE(syscall_unlink);
 620         return result;
 621 }
 622
 623 static int vfswrap_chmod(vfs_handle_struct *handle,  const char *path, mode_t mode)
 624 {
 625         int result;
 626
 627         START_PROFILE(syscall_chmod);
 628
 629         /*
 630          * We need to do this due to the fact that the default POSIX ACL
 631          * chmod modifies the ACL *mask* for the group owner, not the
 632          * group owner bits directly. JRA.
 633          */
 634
 635
 636         {
 637                 int saved_errno = errno; /* We might get ENOSYS */
 638                 if ((result = SMB_VFS_CHMOD_ACL(handle->conn, path, mode)) == 0) {
 639                         END_PROFILE(syscall_chmod);
 640                         return result;
 641                 }
 642                 /* Error - return the old errno. */
 643                 errno = saved_errno;
 644         }
 645
 646         result = chmod(path, mode);
 647         END_PROFILE(syscall_chmod);
 648         return result;
 649 }
 650
 651 static int vfswrap_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
 652 {
 653         int result;
 654
 655         START_PROFILE(syscall_fchmod);
 656
 657         /*
 658          * We need to do this due to the fact that the default POSIX ACL
 659          * chmod modifies the ACL *mask* for the group owner, not the
 660          * group owner bits directly. JRA.
 661          */
 662
 663         {
 664                 int saved_errno = errno; /* We might get ENOSYS */
 665                 if ((result = SMB_VFS_FCHMOD_ACL(fsp, mode)) == 0) {
 666                         END_PROFILE(syscall_fchmod);
 667                         return result;
 668                 }
 669                 /* Error - return the old errno. */
 670                 errno = saved_errno;
 671         }
 672
 673 #if defined(HAVE_FCHMOD)
 674         result = fchmod(fsp->fh->fd, mode);
 675 #else
 676         result = -1;
 677         errno = ENOSYS;
 678 #endif
 679
 680         END_PROFILE(syscall_fchmod);
 681         return result;
 682 }
 683
 684 static int vfswrap_chown(vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
 685 {
 686         int result;
 687
 688         START_PROFILE(syscall_chown);
 689         result = chown(path, uid, gid);
 690         END_PROFILE(syscall_chown);
 691         return result;
 692 }
 693
 694 static int vfswrap_fchown(vfs_handle_struct *handle, files_struct *fsp, uid_t uid, gid_t gid)
 695 {
 696 #ifdef HAVE_FCHOWN
 697         int result;
 698
 699         START_PROFILE(syscall_fchown);
 700         result = fchown(fsp->fh->fd, uid, gid);
 701         END_PROFILE(syscall_fchown);
 702         return result;
 703 #else
 704         errno = ENOSYS;
 705         return -1;
 706 #endif
 707 }
 708
 709 static int vfswrap_lchown(vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
 710 {
 711         int result;
 712
 713         START_PROFILE(syscall_lchown);
 714         result = lchown(path, uid, gid);
 715         END_PROFILE(syscall_lchown);
 716         return result;
 717 }
 718
 719 static int vfswrap_chdir(vfs_handle_struct *handle,  const char *path)
 720 {
 721         int result;
 722
 723         START_PROFILE(syscall_chdir);
 724         result = chdir(path);
 725         END_PROFILE(syscall_chdir);
 726         return result;
 727 }
 728
 729 static char *vfswrap_getwd(vfs_handle_struct *handle,  char *path)
 730 {
 731         char *result;
 732
 733         START_PROFILE(syscall_getwd);
 734         result = sys_getwd(path);
 735         END_PROFILE(syscall_getwd);
 736         return result;
 737 }
 738
 739 /*********************************************************************
 740  nsec timestamp resolution call. Convert down to whatever the underlying
 741  system will support.
 742 **********************************************************************/
 743
 744 static int vfswrap_ntimes(vfs_handle_struct *handle,
 745                           const struct smb_filename *smb_fname,
 746                           struct smb_file_time *ft)
 747 {
 748         int result = -1;
 749
 750         START_PROFILE(syscall_ntimes);
 751
 752         if (smb_fname->stream_name) {
 753                 errno = ENOENT;
 754                 goto out;
 755         }
 756
 757         if (ft != NULL) {
 758                 if (null_timespec(ft->atime)) {
 759                         ft->atime= smb_fname->st.st_ex_atime;
 760                 }
 761
 762                 if (null_timespec(ft->mtime)) {
 763                         ft->mtime = smb_fname->st.st_ex_mtime;
 764                 }
 765
 766                 if (!null_timespec(ft->create_time)) {
 767                         set_create_timespec_ea(handle->conn,
 768                                                smb_fname,
 769                                                ft->create_time);
 770                 }
 771
 772                 if ((timespec_compare(&ft->atime,
 773                                       &smb_fname->st.st_ex_atime) == 0) &&
 774                     (timespec_compare(&ft->mtime,
 775                                       &smb_fname->st.st_ex_mtime) == 0)) {
 776                         return 0;
 777                 }
 778         }
 779
 780 #if defined(HAVE_UTIMENSAT)
 781         if (ft != NULL) {
 782                 struct timespec ts[2];
 783                 ts[0] = ft->atime;
 784                 ts[1] = ft->mtime;
 785                 result = utimensat(AT_FDCWD, smb_fname->base_name, ts, 0);
 786         } else {
 787                 result = utimensat(AT_FDCWD, smb_fname->base_name, NULL, 0);
 788         }
 789 #elif defined(HAVE_UTIMES)
 790         if (ft != NULL) {
 791                 struct timeval tv[2];
 792                 tv[0] = convert_timespec_to_timeval(ft->atime);
 793                 tv[1] = convert_timespec_to_timeval(ft->mtime);
 794                 result = utimes(smb_fname->base_name, tv);
 795         } else {
 796                 result = utimes(smb_fname->base_name, NULL);
 797         }
 798 #elif defined(HAVE_UTIME)
 799         if (ft != NULL) {
 800                 struct utimbuf times;
 801                 times.actime = convert_timespec_to_time_t(ft->atime);
 802                 times.modtime = convert_timespec_to_time_t(ft->mtime);
 803                 result = utime(smb_fname->base_name, &times);
 804         } else {
 805                 result = utime(smb_fname->base_name, NULL);
 806         }
 807 #else
 808         errno = ENOSYS;
 809         result = -1;
 810 #endif
 811
 812  out:
 813         END_PROFILE(syscall_ntimes);
 814         return result;
 815 }
 816
 817 /*********************************************************************
 818  A version of ftruncate that will write the space on disk if strict
 819  allocate is set.
 820 **********************************************************************/
 821
 822 static int strict_allocate_ftruncate(vfs_handle_struct *handle, files_struct *fsp, SMB_OFF_T len)
 823 {
 824         SMB_STRUCT_STAT st;
 825         SMB_OFF_T space_to_write;
 826         uint64_t space_avail;
 827         uint64_t bsize,dfree,dsize;
 828         int ret;
 829
 830         if (SMB_VFS_FSTAT(fsp, &st) == -1)
 831                 return -1;
 832
 833 #ifdef S_ISFIFO
 834         if (S_ISFIFO(st.st_ex_mode))
 835                 return 0;
 836 #endif
 837
 838         if (st.st_ex_size == len)
 839                 return 0;
 840
 841         /* Shrink - just ftruncate. */
 842         if (st.st_ex_size > len)
 843                 return sys_ftruncate(fsp->fh->fd, len);
 844
 845         space_to_write = len - st.st_ex_size;
 846
 847         /* for allocation try posix_fallocate first. This can fail on some
 848            platforms e.g. when the filesystem doesn't support it and no
 849            emulation is being done by the libc (like on AIX with JFS1). In that
 850            case we do our own emulation. posix_fallocate implementations can
 851            return ENOTSUP or EINVAL in cases like that. */
 852         ret = SMB_VFS_POSIX_FALLOCATE(fsp, st.st_ex_size, space_to_write);
 853         if (ret == ENOSPC) {
 854                 errno = ENOSPC;
 855                 return -1;
 856         }
 857         if (ret == 0) {
 858                 return 0;
 859         }
 860         DEBUG(10,("strict_allocate_ftruncate: SMB_VFS_POSIX_FALLOCATE failed with "
 861                 "error %d. Falling back to slow manual allocation\n", ret));
 862
 863         /* available disk space is enough or not? */
 864         space_avail = get_dfree_info(fsp->conn,
 865                                      fsp->fsp_name->base_name, false,
 866                                      &bsize,&dfree,&dsize);
 867         /* space_avail is 1k blocks */
 868         if (space_avail == (uint64_t)-1 ||
 869                         ((uint64_t)space_to_write/1024 > space_avail) ) {
 870                 errno = ENOSPC;
 871                 return -1;
 872         }
 873
 874         /* Write out the real space on disk. */
 875         ret = vfs_slow_fallocate(fsp, st.st_ex_size, space_to_write);
 876         if (ret != 0) {
 877                 errno = ret;
 878                 ret = -1;
 879         }
 880
 881         return 0;
 882 }
 883
 884 static int vfswrap_ftruncate(vfs_handle_struct *handle, files_struct *fsp, SMB_OFF_T len)
 885 {
 886         int result = -1;
 887         SMB_STRUCT_STAT st;
 888         char c = 0;
 889
 890         START_PROFILE(syscall_ftruncate);
 891
 892         if (lp_strict_allocate(SNUM(fsp->conn))) {
 893                 result = strict_allocate_ftruncate(handle, fsp, len);
 894                 END_PROFILE(syscall_ftruncate);
 895                 return result;
 896         }
 897
 898         /* we used to just check HAVE_FTRUNCATE_EXTEND and only use
 899            sys_ftruncate if the system supports it. Then I discovered that
 900            you can have some filesystems that support ftruncate
 901            expansion and some that don't! On Linux fat can't do
 902            ftruncate extend but ext2 can. */
 903
 904         result = sys_ftruncate(fsp->fh->fd, len);
 905         if (result == 0)
 906                 goto done;
 907
 908         /* According to W. R. Stevens advanced UNIX prog. Pure 4.3 BSD cannot
 909            extend a file with ftruncate. Provide alternate implementation
 910            for this */
 911
 912         /* Do an fstat to see if the file is longer than the requested
 913            size in which case the ftruncate above should have
 914            succeeded or shorter, in which case seek to len - 1 and
 915            write 1 byte of zero */
 916         if (SMB_VFS_FSTAT(fsp, &st) == -1) {
 917                 goto done;
 918         }
 919
 920 #ifdef S_ISFIFO
 921         if (S_ISFIFO(st.st_ex_mode)) {
 922                 result = 0;
 923                 goto done;
 924         }
 925 #endif
 926
 927         if (st.st_ex_size == len) {
 928                 result = 0;
 929                 goto done;
 930         }
 931
 932         if (st.st_ex_size > len) {
 933                 /* the sys_ftruncate should have worked */
 934                 goto done;
 935         }
 936
 937         if (SMB_VFS_PWRITE(fsp, &c, 1, len-1)!=1) {
 938                 goto done;
 939         }
 940
 941         result = 0;
 942
 943   done:
 944
 945         END_PROFILE(syscall_ftruncate);
 946         return result;
 947 }
 948
 949 static int vfswrap_posix_fallocate(vfs_handle_struct *handle,
 950                         files_struct *fsp,
 951                         SMB_OFF_T offset,
 952                         SMB_OFF_T len)
 953 {
 954         int result;
 955
 956         START_PROFILE(syscall_posix_fallocate);
 957         result = sys_posix_fallocate(fsp->fh->fd, offset, len);
 958         END_PROFILE(syscall_posix_fallocate);
 959         return result;
 960 }
 961
 962 static bool vfswrap_lock(vfs_handle_struct *handle, files_struct *fsp, int op, SMB_OFF_T offset, SMB_OFF_T count, int type)
 963 {
 964         bool result;
 965
 966         START_PROFILE(syscall_fcntl_lock);
 967         result =  fcntl_lock(fsp->fh->fd, op, offset, count, type);
 968         END_PROFILE(syscall_fcntl_lock);
 969         return result;
 970 }
 971
 972 static int vfswrap_kernel_flock(vfs_handle_struct *handle, files_struct *fsp,
 973                                 uint32 share_mode, uint32 access_mask)
 974 {
 975         START_PROFILE(syscall_kernel_flock);
 976         kernel_flock(fsp->fh->fd, share_mode, access_mask);
 977         END_PROFILE(syscall_kernel_flock);
 978         return 0;
 979 }
 980
 981 static bool vfswrap_getlock(vfs_handle_struct *handle, files_struct *fsp, SMB_OFF_T *poffset, SMB_OFF_T *pcount, int *ptype, pid_t *ppid)
 982 {
 983         bool result;
 984
 985         START_PROFILE(syscall_fcntl_getlock);
 986         result =  fcntl_getlock(fsp->fh->fd, poffset, pcount, ptype, ppid);
 987         END_PROFILE(syscall_fcntl_getlock);
 988         return result;
 989 }
 990
 991 static int vfswrap_linux_setlease(vfs_handle_struct *handle, files_struct *fsp,
 992                                 int leasetype)
 993 {
 994         int result = -1;
 995
 996         START_PROFILE(syscall_linux_setlease);
 997
 998 #ifdef HAVE_KERNEL_OPLOCKS_LINUX
 999         /* first set the signal handler */
1000         if(linux_set_lease_sighandler(fsp->fh->fd) == -1) {
1001                 return -1;
1002         }
1003
1004         result = linux_setlease(fsp->fh->fd, leasetype);
1005 #else
1006         errno = ENOSYS;
1007 #endif
1008         END_PROFILE(syscall_linux_setlease);
1009         return result;
1010 }
1011
1012 static int vfswrap_symlink(vfs_handle_struct *handle,  const char *oldpath, const char *newpath)
1013 {
1014         int result;
1015
1016         START_PROFILE(syscall_symlink);
1017         result = symlink(oldpath, newpath);
1018         END_PROFILE(syscall_symlink);
1019         return result;
1020 }
1021
1022 static int vfswrap_readlink(vfs_handle_struct *handle,  const char *path, char *buf, size_t bufsiz)
1023 {
1024         int result;
1025
1026         START_PROFILE(syscall_readlink);
1027         result = readlink(path, buf, bufsiz);
1028         END_PROFILE(syscall_readlink);
1029         return result;
1030 }
1031
1032 static int vfswrap_link(vfs_handle_struct *handle,  const char *oldpath, const char *newpath)
1033 {
1034         int result;
1035
1036         START_PROFILE(syscall_link);
1037         result = link(oldpath, newpath);
1038         END_PROFILE(syscall_link);
1039         return result;
1040 }
1041
1042 static int vfswrap_mknod(vfs_handle_struct *handle,  const char *pathname, mode_t mode, SMB_DEV_T dev)
1043 {
1044         int result;
1045
1046         START_PROFILE(syscall_mknod);
1047         result = sys_mknod(pathname, mode, dev);
1048         END_PROFILE(syscall_mknod);
1049         return result;
1050 }
1051
1052 static char *vfswrap_realpath(vfs_handle_struct *handle,  const char *path)
1053 {
1054         char *result;
1055
1056         START_PROFILE(syscall_realpath);
1057 #ifdef REALPATH_TAKES_NULL
1058         result = realpath(path, NULL);
1059 #else
1060         result = SMB_MALLOC_ARRAY(char, PATH_MAX+1);
1061         if (result) {
1062                 char *resolved_path = realpath(path, result);
1063                 if (!resolved_path) {
1064                         SAFE_FREE(result);
1065                 } else {
1066                         /* SMB_ASSERT(result == resolved_path) ? */
1067                         result = resolved_path;
1068                 }
1069         }
1070 #endif
1071         END_PROFILE(syscall_realpath);
1072         return result;
1073 }
1074
1075 static NTSTATUS vfswrap_notify_watch(vfs_handle_struct *vfs_handle,
1076                                      struct sys_notify_context *ctx,
1077                                      struct notify_entry *e,
1078                                      void (*callback)(struct sys_notify_context *ctx,
1079                                                       void *private_data,
1080                                                       struct notify_event *ev),
1081                                      void *private_data, void *handle)
1082 {
1083         /*
1084          * So far inotify is the only supported default notify mechanism. If
1085          * another platform like the the BSD's or a proprietary Unix comes
1086          * along and wants another default, we can play the same trick we
1087          * played with Posix ACLs.
1088          *
1089          * Until that is the case, hard-code inotify here.
1090          */
1091 #ifdef HAVE_INOTIFY
1092         if (lp_kernel_change_notify(ctx->conn->params)) {
1093                 return inotify_watch(ctx, e, callback, private_data, handle);
1094         }
1095 #endif
1096         /*
1097          * Do nothing, leave everything to notify_internal.c
1098          */
1099         return NT_STATUS_OK;
1100 }
1101
1102 static int vfswrap_chflags(vfs_handle_struct *handle, const char *path,
1103                            unsigned int flags)
1104 {
1105 #ifdef HAVE_CHFLAGS
1106         return chflags(path, flags);
1107 #else
1108         errno = ENOSYS;
1109         return -1;
1110 #endif
1111 }
1112
1113 static struct file_id vfswrap_file_id_create(struct vfs_handle_struct *handle,
1114                                              const SMB_STRUCT_STAT *sbuf)
1115 {
1116         struct file_id key;
1117
1118         /* the ZERO_STRUCT ensures padding doesn't break using the key as a
1119          * blob */
1120         ZERO_STRUCT(key);
1121
1122         key.devid = sbuf->st_ex_dev;
1123         key.inode = sbuf->st_ex_ino;
1124         /* key.extid is unused by default. */
1125
1126         return key;
1127 }
1128
1129 static NTSTATUS vfswrap_streaminfo(vfs_handle_struct *handle,
1130                                    struct files_struct *fsp,
1131                                    const char *fname,
1132                                    TALLOC_CTX *mem_ctx,
1133                                    unsigned int *pnum_streams,
1134                                    struct stream_struct **pstreams)
1135 {
1136         SMB_STRUCT_STAT sbuf;
1137         unsigned int num_streams = 0;
1138         struct stream_struct *streams = NULL;
1139         int ret;
1140
1141         if ((fsp != NULL) && (fsp->is_directory)) {
1142                 /*
1143                  * No default streams on directories
1144                  */
1145                 goto done;
1146         }
1147
1148         if ((fsp != NULL) && (fsp->fh->fd != -1)) {
1149                 ret = SMB_VFS_FSTAT(fsp, &sbuf);
1150         }
1151         else {
1152                 struct smb_filename smb_fname;
1153
1154                 ZERO_STRUCT(smb_fname);
1155                 smb_fname.base_name = discard_const_p(char, fname);
1156
1157                 if (lp_posix_pathnames()) {
1158                         ret = SMB_VFS_LSTAT(handle->conn, &smb_fname);
1159                 } else {
1160                         ret = SMB_VFS_STAT(handle->conn, &smb_fname);
1161                 }
1162                 sbuf = smb_fname.st;
1163         }
1164
1165         if (ret == -1) {
1166                 return map_nt_error_from_unix(errno);
1167         }
1168
1169         if (S_ISDIR(sbuf.st_ex_mode)) {
1170                 goto done;
1171         }
1172
1173         streams = talloc(mem_ctx, struct stream_struct);
1174
1175         if (streams == NULL) {
1176                 return NT_STATUS_NO_MEMORY;
1177         }
1178
1179         streams->size = sbuf.st_ex_size;
1180         streams->alloc_size = SMB_VFS_GET_ALLOC_SIZE(handle->conn, fsp, &sbuf);
1181
1182         streams->name = talloc_strdup(streams, "::$DATA");
1183         if (streams->name == NULL) {
1184                 TALLOC_FREE(streams);
1185                 return NT_STATUS_NO_MEMORY;
1186         }
1187
1188         num_streams = 1;
1189  done:
1190         *pnum_streams = num_streams;
1191         *pstreams = streams;
1192         return NT_STATUS_OK;
1193 }
1194
1195 static int vfswrap_get_real_filename(struct vfs_handle_struct *handle,
1196                                      const char *path,
1197                                      const char *name,
1198                                      TALLOC_CTX *mem_ctx,
1199                                      char **found_name)
1200 {
1201         /*
1202          * Don't fall back to get_real_filename so callers can differentiate
1203          * between a full directory scan and an actual case-insensitive stat.
1204          */
1205         errno = EOPNOTSUPP;
1206         return -1;
1207 }
1208
1209 static const char *vfswrap_connectpath(struct vfs_handle_struct *handle,
1210                                        const char *fname)
1211 {
1212         return handle->conn->connectpath;
1213 }
1214
1215 static NTSTATUS vfswrap_brl_lock_windows(struct vfs_handle_struct *handle,
1216                                          struct byte_range_lock *br_lck,
1217                                          struct lock_struct *plock,
1218                                          bool blocking_lock,
1219                                          struct blocking_lock_record *blr)
1220 {
1221         SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
1222
1223         /* Note: blr is not used in the default implementation. */
1224         return brl_lock_windows_default(br_lck, plock, blocking_lock);
1225 }
1226
1227 static bool vfswrap_brl_unlock_windows(struct vfs_handle_struct *handle,
1228                                        struct messaging_context *msg_ctx,
1229                                        struct byte_range_lock *br_lck,
1230                                        const struct lock_struct *plock)
1231 {
1232         SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
1233
1234         return brl_unlock_windows_default(msg_ctx, br_lck, plock);
1235 }
1236
1237 static bool vfswrap_brl_cancel_windows(struct vfs_handle_struct *handle,
1238                                        struct byte_range_lock *br_lck,
1239                                        struct lock_struct *plock,
1240                                        struct blocking_lock_record *blr)
1241 {
1242         SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
1243
1244         /* Note: blr is not used in the default implementation. */
1245         return brl_lock_cancel_default(br_lck, plock);
1246 }
1247
1248 static bool vfswrap_strict_lock(struct vfs_handle_struct *handle,
1249                                 files_struct *fsp,
1250                                 struct lock_struct *plock)
1251 {
1252         SMB_ASSERT(plock->lock_type == READ_LOCK ||
1253             plock->lock_type == WRITE_LOCK);
1254
1255         return strict_lock_default(fsp, plock);
1256 }
1257
1258 static void vfswrap_strict_unlock(struct vfs_handle_struct *handle,
1259                                 files_struct *fsp,
1260                                 struct lock_struct *plock)
1261 {
1262         SMB_ASSERT(plock->lock_type == READ_LOCK ||
1263             plock->lock_type == WRITE_LOCK);
1264
1265         strict_unlock_default(fsp, plock);
1266 }
1267
1268 /* NT ACL operations. */
1269
1270 static NTSTATUS vfswrap_fget_nt_acl(vfs_handle_struct *handle,
1271                                     files_struct *fsp,
1272                                     uint32 security_info,
1273                                     struct security_descriptor **ppdesc)
1274 {
1275         NTSTATUS result;
1276
1277         START_PROFILE(fget_nt_acl);
1278         result = posix_fget_nt_acl(fsp, security_info, ppdesc);
1279         END_PROFILE(fget_nt_acl);
1280         return result;
1281 }
1282
1283 static NTSTATUS vfswrap_get_nt_acl(vfs_handle_struct *handle,
1284                                    const char *name,
1285                                    uint32 security_info,
1286                                    struct security_descriptor **ppdesc)
1287 {
1288         NTSTATUS result;
1289
1290         START_PROFILE(get_nt_acl);
1291         result = posix_get_nt_acl(handle->conn, name, security_info, ppdesc);
1292         END_PROFILE(get_nt_acl);
1293         return result;
1294 }
1295
1296 static NTSTATUS vfswrap_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const struct security_descriptor *psd)
1297 {
1298         NTSTATUS result;
1299
1300         START_PROFILE(fset_nt_acl);
1301         result = set_nt_acl(fsp, security_info_sent, psd);
1302         END_PROFILE(fset_nt_acl);
1303         return result;
1304 }
1305
1306 static int vfswrap_chmod_acl(vfs_handle_struct *handle,  const char *name, mode_t mode)
1307 {
1308 #ifdef HAVE_NO_ACL
1309         errno = ENOSYS;
1310         return -1;
1311 #else
1312         int result;
1313
1314         START_PROFILE(chmod_acl);
1315         result = chmod_acl(handle->conn, name, mode);
1316         END_PROFILE(chmod_acl);
1317         return result;
1318 #endif
1319 }
1320
1321 static int vfswrap_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
1322 {
1323 #ifdef HAVE_NO_ACL
1324         errno = ENOSYS;
1325         return -1;
1326 #else
1327         int result;
1328
1329         START_PROFILE(fchmod_acl);
1330         result = fchmod_acl(fsp, mode);
1331         END_PROFILE(fchmod_acl);
1332         return result;
1333 #endif
1334 }
1335
1336 static int vfswrap_sys_acl_get_entry(vfs_handle_struct *handle,  SMB_ACL_T theacl, int entry_id, SMB_ACL_ENTRY_T *entry_p)
1337 {
1338         return sys_acl_get_entry(theacl, entry_id, entry_p);
1339 }
1340
1341 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)
1342 {
1343         return sys_acl_get_tag_type(entry_d, tag_type_p);
1344 }
1345
1346 static int vfswrap_sys_acl_get_permset(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry_d, SMB_ACL_PERMSET_T *permset_p)
1347 {
1348         return sys_acl_get_permset(entry_d, permset_p);
1349 }
1350
1351 static void * vfswrap_sys_acl_get_qualifier(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry_d)
1352 {
1353         return sys_acl_get_qualifier(entry_d);
1354 }
1355
1356 static SMB_ACL_T vfswrap_sys_acl_get_file(vfs_handle_struct *handle,  const char *path_p, SMB_ACL_TYPE_T type)
1357 {
1358         return sys_acl_get_file(handle, path_p, type);
1359 }
1360
1361 static SMB_ACL_T vfswrap_sys_acl_get_fd(vfs_handle_struct *handle, files_struct *fsp)
1362 {
1363         return sys_acl_get_fd(handle, fsp);
1364 }
1365
1366 static int vfswrap_sys_acl_clear_perms(vfs_handle_struct *handle,  SMB_ACL_PERMSET_T permset)
1367 {
1368         return sys_acl_clear_perms(permset);
1369 }
1370
1371 static int vfswrap_sys_acl_add_perm(vfs_handle_struct *handle,  SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm)
1372 {
1373         return sys_acl_add_perm(permset, perm);
1374 }
1375
1376 static char * vfswrap_sys_acl_to_text(vfs_handle_struct *handle,  SMB_ACL_T theacl, ssize_t *plen)
1377 {
1378         return sys_acl_to_text(theacl, plen);
1379 }
1380
1381 static SMB_ACL_T vfswrap_sys_acl_init(vfs_handle_struct *handle,  int count)
1382 {
1383         return sys_acl_init(count);
1384 }
1385
1386 static int vfswrap_sys_acl_create_entry(vfs_handle_struct *handle,  SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry)
1387 {
1388         return sys_acl_create_entry(pacl, pentry);
1389 }
1390
1391 static int vfswrap_sys_acl_set_tag_type(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry, SMB_ACL_TAG_T tagtype)
1392 {
1393         return sys_acl_set_tag_type(entry, tagtype);
1394 }
1395
1396 static int vfswrap_sys_acl_set_qualifier(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry, void *qual)
1397 {
1398         return sys_acl_set_qualifier(entry, qual);
1399 }
1400
1401 static int vfswrap_sys_acl_set_permset(vfs_handle_struct *handle,  SMB_ACL_ENTRY_T entry, SMB_ACL_PERMSET_T permset)
1402 {
1403         return sys_acl_set_permset(entry, permset);
1404 }
1405
1406 static int vfswrap_sys_acl_valid(vfs_handle_struct *handle,  SMB_ACL_T theacl )
1407 {
1408         return sys_acl_valid(theacl );
1409 }
1410
1411 static int vfswrap_sys_acl_set_file(vfs_handle_struct *handle,  const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl)
1412 {
1413         return sys_acl_set_file(handle, name, acltype, theacl);
1414 }
1415
1416 static int vfswrap_sys_acl_set_fd(vfs_handle_struct *handle, files_struct *fsp, SMB_ACL_T theacl)
1417 {
1418         return sys_acl_set_fd(handle, fsp, theacl);
1419 }
1420
1421 static int vfswrap_sys_acl_delete_def_file(vfs_handle_struct *handle,  const char *path)
1422 {
1423         return sys_acl_delete_def_file(handle, path);
1424 }
1425
1426 static int vfswrap_sys_acl_get_perm(vfs_handle_struct *handle,  SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm)
1427 {
1428         return sys_acl_get_perm(permset, perm);
1429 }
1430
1431 static int vfswrap_sys_acl_free_text(vfs_handle_struct *handle,  char *text)
1432 {
1433         return sys_acl_free_text(text);
1434 }
1435
1436 static int vfswrap_sys_acl_free_acl(vfs_handle_struct *handle,  SMB_ACL_T posix_acl)
1437 {
1438         return sys_acl_free_acl(posix_acl);
1439 }
1440
1441 static int vfswrap_sys_acl_free_qualifier(vfs_handle_struct *handle,  void *qualifier, SMB_ACL_TAG_T tagtype)
1442 {
1443         return sys_acl_free_qualifier(qualifier, tagtype);
1444 }
1445
1446 /****************************************************************
1447  Extended attribute operations.
1448 *****************************************************************/
1449
1450 static ssize_t vfswrap_getxattr(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size)
1451 {
1452         return sys_getxattr(path, name, value, size);
1453 }
1454
1455 static ssize_t vfswrap_lgetxattr(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size)
1456 {
1457         return sys_lgetxattr(path, name, value, size);
1458 }
1459
1460 static ssize_t vfswrap_fgetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size)
1461 {
1462         return sys_fgetxattr(fsp->fh->fd, name, value, size);
1463 }
1464
1465 static ssize_t vfswrap_listxattr(struct vfs_handle_struct *handle, const char *path, char *list, size_t size)
1466 {
1467         return sys_listxattr(path, list, size);
1468 }
1469
1470 ssize_t vfswrap_llistxattr(struct vfs_handle_struct *handle, const char *path, char *list, size_t size)
1471 {
1472         return sys_llistxattr(path, list, size);
1473 }
1474
1475 ssize_t vfswrap_flistxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size)
1476 {
1477         return sys_flistxattr(fsp->fh->fd, list, size);
1478 }
1479
1480 static int vfswrap_removexattr(struct vfs_handle_struct *handle, const char *path, const char *name)
1481 {
1482         return sys_removexattr(path, name);
1483 }
1484
1485 static int vfswrap_lremovexattr(struct vfs_handle_struct *handle, const char *path, const char *name)
1486 {
1487         return sys_lremovexattr(path, name);
1488 }
1489
1490 static int vfswrap_fremovexattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name)
1491 {
1492         return sys_fremovexattr(fsp->fh->fd, name);
1493 }
1494
1495 static int vfswrap_setxattr(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags)
1496 {
1497         return sys_setxattr(path, name, value, size, flags);
1498 }
1499
1500 static int vfswrap_lsetxattr(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags)
1501 {
1502         return sys_lsetxattr(path, name, value, size, flags);
1503 }
1504
1505 static int vfswrap_fsetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags)
1506 {
1507         return sys_fsetxattr(fsp->fh->fd, name, value, size, flags);
1508 }
1509
1510 static int vfswrap_aio_read(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1511 {
1512         int ret;
1513         /*
1514          * aio_read must be done as root, because in the glibc aio
1515          * implementation the helper thread needs to be able to send a signal
1516          * to the main thread, even when it has done a seteuid() to a
1517          * different user.
1518          */
1519         become_root();
1520         ret = sys_aio_read(aiocb);
1521         unbecome_root();
1522         return ret;
1523 }
1524
1525 static int vfswrap_aio_write(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1526 {
1527         int ret;
1528         /*
1529          * aio_write must be done as root, because in the glibc aio
1530          * implementation the helper thread needs to be able to send a signal
1531          * to the main thread, even when it has done a seteuid() to a
1532          * different user.
1533          */
1534         become_root();
1535         ret = sys_aio_write(aiocb);
1536         unbecome_root();
1537         return ret;
1538 }
1539
1540 static ssize_t vfswrap_aio_return(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1541 {
1542         return sys_aio_return(aiocb);
1543 }
1544
1545 static int vfswrap_aio_cancel(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1546 {
1547         return sys_aio_cancel(fsp->fh->fd, aiocb);
1548 }
1549
1550 static int vfswrap_aio_error(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
1551 {
1552         return sys_aio_error(aiocb);
1553 }
1554
1555 static int vfswrap_aio_fsync(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, SMB_STRUCT_AIOCB *aiocb)
1556 {
1557         return sys_aio_fsync(op, aiocb);
1558 }
1559
1560 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)
1561 {
1562         return sys_aio_suspend(aiocb, n, timeout);
1563 }
1564
1565 static bool vfswrap_aio_force(struct vfs_handle_struct *handle, struct files_struct *fsp)
1566 {
1567         return false;
1568 }
1569
1570 static bool vfswrap_is_offline(struct vfs_handle_struct *handle, const char *path, SMB_STRUCT_STAT *sbuf)
1571 {
1572         if (ISDOT(path) || ISDOTDOT(path)) {
1573                 return false;
1574         }
1575
1576         if (!lp_dmapi_support(SNUM(handle->conn)) || !dmapi_have_session()) {
1577 #if defined(ENOTSUP)
1578                 errno = ENOTSUP;
1579 #endif
1580                 return false;
1581         }
1582
1583         return (dmapi_file_flags(path) & FILE_ATTRIBUTE_OFFLINE) != 0;
1584 }
1585
1586 static int vfswrap_set_offline(struct vfs_handle_struct *handle, const char *path)
1587 {
1588         /* We don't know how to set offline bit by default, needs to be overriden in the vfs modules */
1589 #if defined(ENOTSUP)
1590         errno = ENOTSUP;
1591 #endif
1592         return -1;
1593 }
1594
1595 static struct vfs_fn_pointers vfs_default_fns = {
1596         /* Disk operations */
1597
1598         .connect_fn = vfswrap_connect,
1599         .disconnect = vfswrap_disconnect,
1600         .disk_free = vfswrap_disk_free,
1601         .get_quota = vfswrap_get_quota,
1602         .set_quota = vfswrap_set_quota,
1603         .get_shadow_copy_data = vfswrap_get_shadow_copy_data,
1604         .statvfs = vfswrap_statvfs,
1605         .fs_capabilities = vfswrap_fs_capabilities,
1606
1607         /* Directory operations */
1608
1609         .opendir = vfswrap_opendir,
1610         .readdir = vfswrap_readdir,
1611         .seekdir = vfswrap_seekdir,
1612         .telldir = vfswrap_telldir,
1613         .rewind_dir = vfswrap_rewinddir,
1614         .mkdir = vfswrap_mkdir,
1615         .rmdir = vfswrap_rmdir,
1616         .closedir = vfswrap_closedir,
1617         .init_search_op = vfswrap_init_search_op,
1618
1619         /* File operations */
1620
1621         .open = vfswrap_open,
1622         .create_file = vfswrap_create_file,
1623         .close_fn = vfswrap_close,
1624         .vfs_read = vfswrap_read,
1625         .pread = vfswrap_pread,
1626         .write = vfswrap_write,
1627         .pwrite = vfswrap_pwrite,
1628         .lseek = vfswrap_lseek,
1629         .sendfile = vfswrap_sendfile,
1630         .recvfile = vfswrap_recvfile,
1631         .rename = vfswrap_rename,
1632         .fsync = vfswrap_fsync,
1633         .stat = vfswrap_stat,
1634         .fstat = vfswrap_fstat,
1635         .lstat = vfswrap_lstat,
1636         .get_alloc_size = vfswrap_get_alloc_size,
1637         .unlink = vfswrap_unlink,
1638         .chmod = vfswrap_chmod,
1639         .fchmod = vfswrap_fchmod,
1640         .chown = vfswrap_chown,
1641         .fchown = vfswrap_fchown,
1642         .lchown = vfswrap_lchown,
1643         .chdir = vfswrap_chdir,
1644         .getwd = vfswrap_getwd,
1645         .ntimes = vfswrap_ntimes,
1646         .ftruncate = vfswrap_ftruncate,
1647         .posix_fallocate = vfswrap_posix_fallocate,
1648         .lock = vfswrap_lock,
1649         .kernel_flock = vfswrap_kernel_flock,
1650         .linux_setlease = vfswrap_linux_setlease,
1651         .getlock = vfswrap_getlock,
1652         .symlink = vfswrap_symlink,
1653         .vfs_readlink = vfswrap_readlink,
1654         .link = vfswrap_link,
1655         .mknod = vfswrap_mknod,
1656         .realpath = vfswrap_realpath,
1657         .notify_watch = vfswrap_notify_watch,
1658         .chflags = vfswrap_chflags,
1659         .file_id_create = vfswrap_file_id_create,
1660         .streaminfo = vfswrap_streaminfo,
1661         .get_real_filename = vfswrap_get_real_filename,
1662         .connectpath = vfswrap_connectpath,
1663         .brl_lock_windows = vfswrap_brl_lock_windows,
1664         .brl_unlock_windows = vfswrap_brl_unlock_windows,
1665         .brl_cancel_windows = vfswrap_brl_cancel_windows,
1666         .strict_lock = vfswrap_strict_lock,
1667         .strict_unlock = vfswrap_strict_unlock,
1668         .translate_name = vfswrap_translate_name,
1669
1670         /* NT ACL operations. */
1671
1672         .fget_nt_acl = vfswrap_fget_nt_acl,
1673         .get_nt_acl = vfswrap_get_nt_acl,
1674         .fset_nt_acl = vfswrap_fset_nt_acl,
1675
1676         /* POSIX ACL operations. */
1677
1678         .chmod_acl = vfswrap_chmod_acl,
1679         .fchmod_acl = vfswrap_fchmod_acl,
1680
1681         .sys_acl_get_entry = vfswrap_sys_acl_get_entry,
1682         .sys_acl_get_tag_type = vfswrap_sys_acl_get_tag_type,
1683         .sys_acl_get_permset = vfswrap_sys_acl_get_permset,
1684         .sys_acl_get_qualifier = vfswrap_sys_acl_get_qualifier,
1685         .sys_acl_get_file = vfswrap_sys_acl_get_file,
1686         .sys_acl_get_fd = vfswrap_sys_acl_get_fd,
1687         .sys_acl_clear_perms = vfswrap_sys_acl_clear_perms,
1688         .sys_acl_add_perm = vfswrap_sys_acl_add_perm,
1689         .sys_acl_to_text = vfswrap_sys_acl_to_text,
1690         .sys_acl_init = vfswrap_sys_acl_init,
1691         .sys_acl_create_entry = vfswrap_sys_acl_create_entry,
1692         .sys_acl_set_tag_type = vfswrap_sys_acl_set_tag_type,
1693         .sys_acl_set_qualifier = vfswrap_sys_acl_set_qualifier,
1694         .sys_acl_set_permset = vfswrap_sys_acl_set_permset,
1695         .sys_acl_valid = vfswrap_sys_acl_valid,
1696         .sys_acl_set_file = vfswrap_sys_acl_set_file,
1697         .sys_acl_set_fd = vfswrap_sys_acl_set_fd,
1698         .sys_acl_delete_def_file = vfswrap_sys_acl_delete_def_file,
1699         .sys_acl_get_perm = vfswrap_sys_acl_get_perm,
1700         .sys_acl_free_text = vfswrap_sys_acl_free_text,
1701         .sys_acl_free_acl = vfswrap_sys_acl_free_acl,
1702         .sys_acl_free_qualifier = vfswrap_sys_acl_free_qualifier,
1703
1704         /* EA operations. */
1705         .getxattr = vfswrap_getxattr,
1706         .lgetxattr = vfswrap_lgetxattr,
1707         .fgetxattr = vfswrap_fgetxattr,
1708         .listxattr = vfswrap_listxattr,
1709         .llistxattr = vfswrap_llistxattr,
1710         .flistxattr = vfswrap_flistxattr,
1711         .removexattr = vfswrap_removexattr,
1712         .lremovexattr = vfswrap_lremovexattr,
1713         .fremovexattr = vfswrap_fremovexattr,
1714         .setxattr = vfswrap_setxattr,
1715         .lsetxattr = vfswrap_lsetxattr,
1716         .fsetxattr = vfswrap_fsetxattr,
1717
1718         /* aio operations */
1719         .aio_read = vfswrap_aio_read,
1720         .aio_write = vfswrap_aio_write,
1721         .aio_return_fn = vfswrap_aio_return,
1722         .aio_cancel = vfswrap_aio_cancel,
1723         .aio_error_fn = vfswrap_aio_error,
1724         .aio_fsync = vfswrap_aio_fsync,
1725         .aio_suspend = vfswrap_aio_suspend,
1726         .aio_force = vfswrap_aio_force,
1727
1728         /* offline operations */
1729         .is_offline = vfswrap_is_offline,
1730         .set_offline = vfswrap_set_offline
1731 };
1732
1733 NTSTATUS vfs_default_init(void);
1734 NTSTATUS vfs_default_init(void)
1735 {
1736         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
1737                                 DEFAULT_VFS_MODULE_NAME, &vfs_default_fns);
1738 }
1739
1740