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 #include "system/time.h"
  23 #include "system/filesys.h"
  24 #include "smbd/smbd.h"
  25 #include "smbd/globals.h"
  26 #include "ntioctl.h"
  27 #include "smbprofile.h"
  28 #include "../libcli/security/security.h"
  29 #include "passdb/lookup_sid.h"
  30 #include "source3/include/msdfs.h"
  31 #include "librpc/gen_ndr/ndr_dfsblobs.h"
  32 #include "lib/util/tevent_unix.h"
  33 #include "lib/util/tevent_ntstatus.h"
  34 #include "lib/util/sys_rw.h"
  35 #include "lib/pthreadpool/pthreadpool_tevent.h"
  36 #include "librpc/gen_ndr/ndr_ioctl.h"
  37 #include "offload_token.h"
  38 #include "util_reparse.h"
  39 #include "lib/util/string_wrappers.h"
  40
  41 #undef DBGC_CLASS
  42 #define DBGC_CLASS DBGC_VFS
  43
  44 /* Check for NULL pointer parameters in vfswrap_* functions */
  45
  46 /* We don't want to have NULL function pointers lying around.  Someone
  47    is sure to try and execute them.  These stubs are used to prevent
  48    this possibility. */
  49
  50 static int vfswrap_connect(vfs_handle_struct *handle, const char *service, const char *user)
  51 {
  52         handle->conn->have_proc_fds = sys_have_proc_fds();
  53         return 0;    /* Return >= 0 for success */
  54 }
  55
  56 static void vfswrap_disconnect(vfs_handle_struct *handle)
  57 {
  58 }
  59
  60 /* Disk operations */
  61
  62 static uint64_t vfswrap_disk_free(vfs_handle_struct *handle,
  63                                 const struct smb_filename *smb_fname,
  64                                 uint64_t *bsize,
  65                                 uint64_t *dfree,
  66                                 uint64_t *dsize)
  67 {
  68         if (sys_fsusage(smb_fname->base_name, dfree, dsize) != 0) {
  69                 return (uint64_t)-1;
  70         }
  71
  72         *bsize = 512;
  73         return *dfree / 2;
  74 }
  75
  76 static int vfswrap_get_quota(struct vfs_handle_struct *handle,
  77                                 const struct smb_filename *smb_fname,
  78                                 enum SMB_QUOTA_TYPE qtype,
  79                                 unid_t id,
  80                                 SMB_DISK_QUOTA *qt)
  81 {
  82 #ifdef HAVE_SYS_QUOTAS
  83         int result;
  84
  85         START_PROFILE(syscall_get_quota);
  86         result = sys_get_quota(smb_fname->base_name, qtype, id, qt);
  87         END_PROFILE(syscall_get_quota);
  88         return result;
  89 #else
  90         errno = ENOSYS;
  91         return -1;
  92 #endif
  93 }
  94
  95 static int vfswrap_set_quota(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
  96 {
  97 #ifdef HAVE_SYS_QUOTAS
  98         int result;
  99
 100         START_PROFILE(syscall_set_quota);
 101         result = sys_set_quota(handle->conn->connectpath, qtype, id, qt);
 102         END_PROFILE(syscall_set_quota);
 103         return result;
 104 #else
 105         errno = ENOSYS;
 106         return -1;
 107 #endif
 108 }
 109
 110 static int vfswrap_get_shadow_copy_data(struct vfs_handle_struct *handle,
 111                                         struct files_struct *fsp,
 112                                         struct shadow_copy_data *shadow_copy_data,
 113                                         bool labels)
 114 {
 115         errno = ENOSYS;
 116         return -1;  /* Not implemented. */
 117 }
 118
 119 static int vfswrap_statvfs(struct vfs_handle_struct *handle,
 120                                 const struct smb_filename *smb_fname,
 121                                 vfs_statvfs_struct *statbuf)
 122 {
 123         return sys_statvfs(smb_fname->base_name, statbuf);
 124 }
 125
 126 static uint32_t vfswrap_fs_capabilities(struct vfs_handle_struct *handle,
 127                 enum timestamp_set_resolution *p_ts_res)
 128 {
 129         const struct loadparm_substitution *lp_sub =
 130                 loadparm_s3_global_substitution();
 131         connection_struct *conn = handle->conn;
 132         uint32_t caps = FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
 133         struct smb_filename *smb_fname_cpath = NULL;
 134         struct vfs_statvfs_struct statbuf;
 135         int ret;
 136
 137         smb_fname_cpath = synthetic_smb_fname(talloc_tos(),
 138                                               conn->connectpath,
 139                                               NULL,
 140                                               NULL,
 141                                               0,
 142                                               0);
 143         if (smb_fname_cpath == NULL) {
 144                 return caps;
 145         }
 146
 147         ZERO_STRUCT(statbuf);
 148         ret = SMB_VFS_STATVFS(conn, smb_fname_cpath, &statbuf);
 149         if (ret == 0) {
 150                 caps = statbuf.FsCapabilities;
 151         }
 152
 153         *p_ts_res = TIMESTAMP_SET_SECONDS;
 154
 155         /* Work out what timestamp resolution we can
 156          * use when setting a timestamp. */
 157
 158         ret = SMB_VFS_STAT(conn, smb_fname_cpath);
 159         if (ret == -1) {
 160                 TALLOC_FREE(smb_fname_cpath);
 161                 return caps;
 162         }
 163
 164         if (smb_fname_cpath->st.st_ex_mtime.tv_nsec ||
 165                         smb_fname_cpath->st.st_ex_atime.tv_nsec ||
 166                         smb_fname_cpath->st.st_ex_ctime.tv_nsec) {
 167                 /* If any of the normal UNIX directory timestamps
 168                  * have a non-zero tv_nsec component assume
 169                  * we might be able to set sub-second timestamps.
 170                  * See what filetime set primitives we have.
 171                  */
 172 #if defined(HAVE_UTIMENSAT)
 173                 *p_ts_res = TIMESTAMP_SET_NT_OR_BETTER;
 174 #elif defined(HAVE_UTIMES)
 175                 /* utimes allows msec timestamps to be set. */
 176                 *p_ts_res = TIMESTAMP_SET_MSEC;
 177 #elif defined(HAVE_UTIME)
 178                 /* utime only allows sec timestamps to be set. */
 179                 *p_ts_res = TIMESTAMP_SET_SECONDS;
 180 #endif
 181
 182                 DEBUG(10,("vfswrap_fs_capabilities: timestamp "
 183                         "resolution of %s "
 184                         "available on share %s, directory %s\n",
 185                         *p_ts_res == TIMESTAMP_SET_MSEC ? "msec" : "sec",
 186                         lp_servicename(talloc_tos(), lp_sub, conn->params->service),
 187                         conn->connectpath ));
 188         }
 189         TALLOC_FREE(smb_fname_cpath);
 190         return caps;
 191 }
 192
 193 static NTSTATUS vfswrap_get_dfs_referrals(struct vfs_handle_struct *handle,
 194                                           struct dfs_GetDFSReferral *r)
 195 {
 196         struct junction_map *junction = NULL;
 197         int consumedcnt = 0;
 198         bool self_referral = false;
 199         char *pathnamep = NULL;
 200         char *local_dfs_path = NULL;
 201         NTSTATUS status;
 202         size_t i;
 203         uint16_t max_referral_level = r->in.req.max_referral_level;
 204
 205         if (DEBUGLVL(10)) {
 206                 NDR_PRINT_IN_DEBUG(dfs_GetDFSReferral, r);
 207         }
 208
 209         /* get the junction entry */
 210         if (r->in.req.servername == NULL) {
 211                 return NT_STATUS_NOT_FOUND;
 212         }
 213
 214         /*
 215          * Trim pathname sent by client so it begins with only one backslash.
 216          * Two backslashes confuse some dfs clients
 217          */
 218
 219         local_dfs_path = talloc_strdup(r, r->in.req.servername);
 220         if (local_dfs_path == NULL) {
 221                 return NT_STATUS_NO_MEMORY;
 222         }
 223         pathnamep = local_dfs_path;
 224         while (IS_DIRECTORY_SEP(pathnamep[0]) &&
 225                IS_DIRECTORY_SEP(pathnamep[1])) {
 226                 pathnamep++;
 227         }
 228
 229         junction = talloc_zero(r, struct junction_map);
 230         if (junction == NULL) {
 231                 return NT_STATUS_NO_MEMORY;
 232         }
 233
 234         /* The following call can change cwd. */
 235         status = get_referred_path(r,
 236                                    handle->conn->session_info,
 237                                    pathnamep,
 238                                    handle->conn->sconn->remote_address,
 239                                    handle->conn->sconn->local_address,
 240                                    !handle->conn->sconn->using_smb2,
 241                                    junction, &consumedcnt, &self_referral);
 242         if (!NT_STATUS_IS_OK(status)) {
 243                 struct smb_filename connectpath_fname = {
 244                         .base_name = handle->conn->connectpath
 245                 };
 246                 vfs_ChDir(handle->conn, &connectpath_fname);
 247                 return status;
 248         }
 249         {
 250                 struct smb_filename connectpath_fname = {
 251                         .base_name = handle->conn->connectpath
 252                 };
 253                 vfs_ChDir(handle->conn, &connectpath_fname);
 254         }
 255
 256         if (!self_referral) {
 257                 pathnamep[consumedcnt] = '\0';
 258
 259                 if (DEBUGLVL(3)) {
 260                         dbgtext("Path %s to alternate path(s):",
 261                                 pathnamep);
 262                         for (i=0; i < junction->referral_count; i++) {
 263                                 dbgtext(" %s",
 264                                 junction->referral_list[i].alternate_path);
 265                         }
 266                         dbgtext(".\n");
 267                 }
 268         }
 269
 270         if (r->in.req.max_referral_level <= 2) {
 271                 max_referral_level = 2;
 272         }
 273         if (r->in.req.max_referral_level >= 3) {
 274                 max_referral_level = 3;
 275         }
 276
 277         r->out.resp = talloc_zero(r, struct dfs_referral_resp);
 278         if (r->out.resp == NULL) {
 279                 return NT_STATUS_NO_MEMORY;
 280         }
 281
 282         r->out.resp->path_consumed = strlen_m(pathnamep) * 2;
 283         r->out.resp->nb_referrals = junction->referral_count;
 284
 285         r->out.resp->header_flags = DFS_HEADER_FLAG_STORAGE_SVR;
 286         if (self_referral) {
 287                 r->out.resp->header_flags |= DFS_HEADER_FLAG_REFERAL_SVR;
 288         }
 289
 290         r->out.resp->referral_entries = talloc_zero_array(r,
 291                                 struct dfs_referral_type,
 292                                 r->out.resp->nb_referrals);
 293         if (r->out.resp->referral_entries == NULL) {
 294                 return NT_STATUS_NO_MEMORY;
 295         }
 296
 297         switch (max_referral_level) {
 298         case 2:
 299                 for(i=0; i < junction->referral_count; i++) {
 300                         struct referral *ref = &junction->referral_list[i];
 301                         TALLOC_CTX *mem_ctx = r->out.resp->referral_entries;
 302                         struct dfs_referral_type *t =
 303                                 &r->out.resp->referral_entries[i];
 304                         struct dfs_referral_v2 *v2 = &t->referral.v2;
 305
 306                         t->version = 2;
 307                         v2->size = VERSION2_REFERRAL_SIZE;
 308                         if (self_referral) {
 309                                 v2->server_type = DFS_SERVER_ROOT;
 310                         } else {
 311                                 v2->server_type = DFS_SERVER_NON_ROOT;
 312                         }
 313                         v2->entry_flags = 0;
 314                         v2->proximity = ref->proximity;
 315                         v2->ttl = ref->ttl;
 316                         v2->DFS_path = talloc_strdup(mem_ctx, pathnamep);
 317                         if (v2->DFS_path == NULL) {
 318                                 return NT_STATUS_NO_MEMORY;
 319                         }
 320                         v2->DFS_alt_path = talloc_strdup(mem_ctx, pathnamep);
 321                         if (v2->DFS_alt_path == NULL) {
 322                                 return NT_STATUS_NO_MEMORY;
 323                         }
 324                         v2->netw_address = talloc_strdup(mem_ctx,
 325                                                          ref->alternate_path);
 326                         if (v2->netw_address == NULL) {
 327                                 return NT_STATUS_NO_MEMORY;
 328                         }
 329                 }
 330
 331                 break;
 332         case 3:
 333                 for(i=0; i < junction->referral_count; i++) {
 334                         struct referral *ref = &junction->referral_list[i];
 335                         TALLOC_CTX *mem_ctx = r->out.resp->referral_entries;
 336                         struct dfs_referral_type *t =
 337                                 &r->out.resp->referral_entries[i];
 338                         struct dfs_referral_v3 *v3 = &t->referral.v3;
 339                         struct dfs_normal_referral *r1 = &v3->referrals.r1;
 340
 341                         t->version = 3;
 342                         v3->size = VERSION3_REFERRAL_SIZE;
 343                         if (self_referral) {
 344                                 v3->server_type = DFS_SERVER_ROOT;
 345                         } else {
 346                                 v3->server_type = DFS_SERVER_NON_ROOT;
 347                         }
 348                         v3->entry_flags = 0;
 349                         v3->ttl = ref->ttl;
 350                         r1->DFS_path = talloc_strdup(mem_ctx, pathnamep);
 351                         if (r1->DFS_path == NULL) {
 352                                 return NT_STATUS_NO_MEMORY;
 353                         }
 354                         r1->DFS_alt_path = talloc_strdup(mem_ctx, pathnamep);
 355                         if (r1->DFS_alt_path == NULL) {
 356                                 return NT_STATUS_NO_MEMORY;
 357                         }
 358                         r1->netw_address = talloc_strdup(mem_ctx,
 359                                                          ref->alternate_path);
 360                         if (r1->netw_address == NULL) {
 361                                 return NT_STATUS_NO_MEMORY;
 362                         }
 363                 }
 364                 break;
 365         default:
 366                 DEBUG(0,("Invalid dfs referral version: %d\n",
 367                         max_referral_level));
 368                 return NT_STATUS_INVALID_LEVEL;
 369         }
 370
 371         if (DEBUGLVL(10)) {
 372                 NDR_PRINT_OUT_DEBUG(dfs_GetDFSReferral, r);
 373         }
 374
 375         return NT_STATUS_OK;
 376 }
 377
 378 static NTSTATUS vfswrap_create_dfs_pathat(struct vfs_handle_struct *handle,
 379                                 struct files_struct *dirfsp,
 380                                 const struct smb_filename *smb_fname,
 381                                 const struct referral *reflist,
 382                                 size_t referral_count)
 383 {
 384         TALLOC_CTX *frame = talloc_stackframe();
 385         NTSTATUS status = NT_STATUS_NO_MEMORY;
 386         int ret;
 387         char *msdfs_link = NULL;
 388
 389         /* Form the msdfs_link contents */
 390         msdfs_link = msdfs_link_string(frame,
 391                                         reflist,
 392                                         referral_count);
 393         if (msdfs_link == NULL) {
 394                 goto out;
 395         }
 396
 397         ret = symlinkat(msdfs_link,
 398                         fsp_get_pathref_fd(dirfsp),
 399                         smb_fname->base_name);
 400         if (ret == 0) {
 401                 status = NT_STATUS_OK;
 402         } else {
 403                 status = map_nt_error_from_unix(errno);
 404         }
 405
 406   out:
 407
 408         TALLOC_FREE(frame);
 409         return status;
 410 }
 411
 412 /*
 413  * Read and return the contents of a DFS redirect given a
 414  * pathname. A caller can pass in NULL for ppreflist and
 415  * preferral_count but still determine if this was a
 416  * DFS redirect point by getting NT_STATUS_OK back
 417  * without incurring the overhead of reading and parsing
 418  * the referral contents.
 419  */
 420
 421 static NTSTATUS vfswrap_read_dfs_pathat(struct vfs_handle_struct *handle,
 422                                 TALLOC_CTX *mem_ctx,
 423                                 struct files_struct *dirfsp,
 424                                 struct smb_filename *smb_fname,
 425                                 struct referral **ppreflist,
 426                                 size_t *preferral_count)
 427 {
 428         NTSTATUS status = NT_STATUS_NO_MEMORY;
 429         size_t bufsize;
 430         char *link_target = NULL;
 431         int referral_len;
 432         bool ok;
 433 #if defined(HAVE_BROKEN_READLINK)
 434         char link_target_buf[PATH_MAX];
 435 #else
 436         char link_target_buf[7];
 437 #endif
 438         int ret;
 439
 440         if (is_named_stream(smb_fname)) {
 441                 status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
 442                 goto err;
 443         }
 444
 445         if (ppreflist == NULL && preferral_count == NULL) {
 446                 /*
 447                  * We're only checking if this is a DFS
 448                  * redirect. We don't need to return data.
 449                  */
 450                 bufsize = sizeof(link_target_buf);
 451                 link_target = link_target_buf;
 452         } else {
 453                 bufsize = PATH_MAX;
 454                 link_target = talloc_array(mem_ctx, char, bufsize);
 455                 if (!link_target) {
 456                         goto err;
 457                 }
 458         }
 459
 460         referral_len = readlinkat(fsp_get_pathref_fd(dirfsp),
 461                                 smb_fname->base_name,
 462                                 link_target,
 463                                 bufsize - 1);
 464         if (referral_len == -1) {
 465                 if (errno == EINVAL) {
 466                         /*
 467                          * If the path isn't a link, readlinkat
 468                          * returns EINVAL. Allow the caller to
 469                          * detect this.
 470                          */
 471                         DBG_INFO("%s is not a link.\n", smb_fname->base_name);
 472                         status = NT_STATUS_OBJECT_TYPE_MISMATCH;
 473                 } else {
 474                         status = map_nt_error_from_unix(errno);
 475                         if (errno == ENOENT) {
 476                                 DBG_NOTICE("Error reading "
 477                                          "msdfs link %s: %s\n",
 478                                          smb_fname->base_name,
 479                                          strerror(errno));
 480                         } else {
 481                                 DBG_ERR("Error reading "
 482                                         "msdfs link %s: %s\n",
 483                                         smb_fname->base_name,
 484                                         strerror(errno));
 485                         }
 486                 }
 487                 goto err;
 488         }
 489         link_target[referral_len] = '\0';
 490
 491         DBG_INFO("%s -> %s\n",
 492                         smb_fname->base_name,
 493                         link_target);
 494
 495         if (!strnequal(link_target, "msdfs:", 6)) {
 496                 status = NT_STATUS_OBJECT_TYPE_MISMATCH;
 497                 goto err;
 498         }
 499
 500        ret = sys_fstatat(fsp_get_pathref_fd(dirfsp),
 501                          smb_fname->base_name,
 502                          &smb_fname->st,
 503                          AT_SYMLINK_NOFOLLOW,
 504                          lp_fake_directory_create_times(SNUM(handle->conn)));
 505         if (ret < 0) {
 506                 status = map_nt_error_from_unix(errno);
 507                 goto err;
 508         }
 509
 510         if (ppreflist == NULL && preferral_count == NULL) {
 511                 /* Early return for checking if this is a DFS link. */
 512                 return NT_STATUS_OK;
 513         }
 514
 515         ok = parse_msdfs_symlink(mem_ctx,
 516                         lp_msdfs_shuffle_referrals(SNUM(handle->conn)),
 517                         link_target,
 518                         ppreflist,
 519                         preferral_count);
 520
 521         if (ok) {
 522                 status = NT_STATUS_OK;
 523         } else {
 524                 status = NT_STATUS_NO_MEMORY;
 525         }
 526
 527   err:
 528
 529         if (link_target != link_target_buf) {
 530                 TALLOC_FREE(link_target);
 531         }
 532         return status;
 533 }
 534
 535 static NTSTATUS vfswrap_snap_check_path(struct vfs_handle_struct *handle,
 536                                         TALLOC_CTX *mem_ctx,
 537                                         const char *service_path,
 538                                         char **base_volume)
 539 {
 540         return NT_STATUS_NOT_SUPPORTED;
 541 }
 542
 543 static NTSTATUS vfswrap_snap_create(struct vfs_handle_struct *handle,
 544                                     TALLOC_CTX *mem_ctx,
 545                                     const char *base_volume,
 546                                     time_t *tstamp,
 547                                     bool rw,
 548                                     char **base_path,
 549                                     char **snap_path)
 550 {
 551         return NT_STATUS_NOT_SUPPORTED;
 552 }
 553
 554 static NTSTATUS vfswrap_snap_delete(struct vfs_handle_struct *handle,
 555                                     TALLOC_CTX *mem_ctx,
 556                                     char *base_path,
 557                                     char *snap_path)
 558 {
 559         return NT_STATUS_NOT_SUPPORTED;
 560 }
 561
 562 /* Directory operations */
 563
 564 static DIR *vfswrap_fdopendir(vfs_handle_struct *handle,
 565                         files_struct *fsp,
 566                         const char *mask,
 567                         uint32_t attr)
 568 {
 569         DIR *result;
 570
 571         START_PROFILE(syscall_fdopendir);
 572         result = sys_fdopendir(fsp_get_io_fd(fsp));
 573         END_PROFILE(syscall_fdopendir);
 574         return result;
 575 }
 576
 577
 578 static struct dirent *vfswrap_readdir(vfs_handle_struct *handle,
 579                                       struct files_struct *dirfsp,
 580                                       DIR *dirp,
 581                                       SMB_STRUCT_STAT *sbuf)
 582 {
 583         struct dirent *result;
 584         bool fake_ctime = lp_fake_directory_create_times(SNUM(handle->conn));
 585         int flags = AT_SYMLINK_NOFOLLOW;
 586         SMB_STRUCT_STAT st;
 587         int ret;
 588
 589         START_PROFILE(syscall_readdir);
 590
 591         result = readdir(dirp);
 592         END_PROFILE(syscall_readdir);
 593
 594         if (sbuf == NULL) {
 595                 return result;
 596         }
 597         if (result == NULL) {
 598                 return NULL;
 599         }
 600
 601         /*
 602          * Default Posix readdir() does not give us stat info.
 603          * Set to invalid to indicate we didn't return this info.
 604          */
 605         SET_STAT_INVALID(*sbuf);
 606
 607         ret = sys_fstatat(dirfd(dirp),
 608                       result->d_name,
 609                       &st,
 610                       flags,
 611                       fake_ctime);
 612         if (ret != 0) {
 613                 return result;
 614         }
 615
 616         /*
 617          * As this is an optimization, ignore it if we stat'ed a
 618          * symlink for non-POSIX context. Make the caller do it again
 619          * as we don't know if they wanted the link info, or its
 620          * target info.
 621          */
 622         if (S_ISLNK(st.st_ex_mode) &&
 623             !(dirfsp->fsp_name->flags & SMB_FILENAME_POSIX_PATH))
 624         {
 625                 return result;
 626         }
 627         *sbuf = st;
 628
 629         return result;
 630 }
 631
 632 static NTSTATUS vfswrap_freaddir_attr(struct vfs_handle_struct *handle,
 633                                       struct files_struct *fsp,
 634                                       TALLOC_CTX *mem_ctx,
 635                                       struct readdir_attr_data **attr_data)
 636 {
 637         return NT_STATUS_NOT_SUPPORTED;
 638 }
 639
 640 static void vfswrap_seekdir(vfs_handle_struct *handle, DIR *dirp, long offset)
 641 {
 642         START_PROFILE(syscall_seekdir);
 643         seekdir(dirp, offset);
 644         END_PROFILE(syscall_seekdir);
 645 }
 646
 647 static long vfswrap_telldir(vfs_handle_struct *handle, DIR *dirp)
 648 {
 649         long result;
 650         START_PROFILE(syscall_telldir);
 651         result = telldir(dirp);
 652         END_PROFILE(syscall_telldir);
 653         return result;
 654 }
 655
 656 static void vfswrap_rewinddir(vfs_handle_struct *handle, DIR *dirp)
 657 {
 658         START_PROFILE(syscall_rewinddir);
 659         rewinddir(dirp);
 660         END_PROFILE(syscall_rewinddir);
 661 }
 662
 663 static int vfswrap_mkdirat(vfs_handle_struct *handle,
 664                         struct files_struct *dirfsp,
 665                         const struct smb_filename *smb_fname,
 666                         mode_t mode)
 667 {
 668         int result;
 669
 670         START_PROFILE(syscall_mkdirat);
 671
 672         result = mkdirat(fsp_get_pathref_fd(dirfsp), smb_fname->base_name, mode);
 673
 674         END_PROFILE(syscall_mkdirat);
 675         return result;
 676 }
 677
 678 static int vfswrap_closedir(vfs_handle_struct *handle, DIR *dirp)
 679 {
 680         int result;
 681
 682         START_PROFILE(syscall_closedir);
 683         result = closedir(dirp);
 684         END_PROFILE(syscall_closedir);
 685         return result;
 686 }
 687
 688 /* File operations */
 689
 690 static int vfswrap_openat(vfs_handle_struct *handle,
 691                           const struct files_struct *dirfsp,
 692                           const struct smb_filename *smb_fname,
 693                           files_struct *fsp,
 694                           int flags,
 695                           mode_t mode)
 696 {
 697         bool have_opath = false;
 698         bool became_root = false;
 699         int result;
 700
 701         START_PROFILE(syscall_openat);
 702
 703         if (is_named_stream(smb_fname)) {
 704                 errno = ENOENT;
 705                 result = -1;
 706                 goto out;
 707         }
 708
 709 #ifdef O_PATH
 710         have_opath = true;
 711         if (fsp->fsp_flags.is_pathref) {
 712                 flags |= O_PATH;
 713         }
 714 #endif
 715
 716         if (fsp->fsp_flags.is_pathref && !have_opath) {
 717                 become_root();
 718                 became_root = true;
 719         }
 720
 721         result = openat(fsp_get_pathref_fd(dirfsp),
 722                         smb_fname->base_name,
 723                         flags,
 724                         mode);
 725
 726         if (became_root) {
 727                 unbecome_root();
 728         }
 729
 730         fsp->fsp_flags.have_proc_fds = fsp->conn->have_proc_fds;
 731
 732 out:
 733         END_PROFILE(syscall_openat);
 734         return result;
 735 }
 736 static NTSTATUS vfswrap_create_file(vfs_handle_struct *handle,
 737                                     struct smb_request *req,
 738                                     struct smb_filename *smb_fname,
 739                                     uint32_t access_mask,
 740                                     uint32_t share_access,
 741                                     uint32_t create_disposition,
 742                                     uint32_t create_options,
 743                                     uint32_t file_attributes,
 744                                     uint32_t oplock_request,
 745                                     const struct smb2_lease *lease,
 746                                     uint64_t allocation_size,
 747                                     uint32_t private_flags,
 748                                     struct security_descriptor *sd,
 749                                     struct ea_list *ea_list,
 750                                     files_struct **result,
 751                                     int *pinfo,
 752                                     const struct smb2_create_blobs *in_context_blobs,
 753                                     struct smb2_create_blobs *out_context_blobs)
 754 {
 755         return create_file_default(handle->conn, req, smb_fname,
 756                                    access_mask, share_access,
 757                                    create_disposition, create_options,
 758                                    file_attributes, oplock_request, lease,
 759                                    allocation_size, private_flags,
 760                                    sd, ea_list, result,
 761                                    pinfo, in_context_blobs, out_context_blobs);
 762 }
 763
 764 static int vfswrap_close(vfs_handle_struct *handle, files_struct *fsp)
 765 {
 766         int result;
 767
 768         START_PROFILE(syscall_close);
 769         result = fd_close_posix(fsp);
 770         END_PROFILE(syscall_close);
 771         return result;
 772 }
 773
 774 static ssize_t vfswrap_pread(vfs_handle_struct *handle, files_struct *fsp, void *data,
 775                         size_t n, off_t offset)
 776 {
 777         ssize_t result;
 778
 779 #if defined(HAVE_PREAD) || defined(HAVE_PREAD64)
 780         START_PROFILE_BYTES(syscall_pread, n);
 781         result = sys_pread_full(fsp_get_io_fd(fsp), data, n, offset);
 782         END_PROFILE_BYTES(syscall_pread);
 783
 784         if (result == -1 && errno == ESPIPE) {
 785                 /* Maintain the fiction that pipes can be seeked (sought?) on. */
 786                 result = sys_read(fsp_get_io_fd(fsp), data, n);
 787                 fh_set_pos(fsp->fh, 0);
 788         }
 789
 790 #else /* HAVE_PREAD */
 791         errno = ENOSYS;
 792         result = -1;
 793 #endif /* HAVE_PREAD */
 794
 795         return result;
 796 }
 797
 798 static ssize_t vfswrap_pwrite(vfs_handle_struct *handle, files_struct *fsp, const void *data,
 799                         size_t n, off_t offset)
 800 {
 801         ssize_t result;
 802
 803 #if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
 804         START_PROFILE_BYTES(syscall_pwrite, n);
 805         result = sys_pwrite_full(fsp_get_io_fd(fsp), data, n, offset);
 806         END_PROFILE_BYTES(syscall_pwrite);
 807
 808         if (result == -1 && errno == ESPIPE) {
 809                 /* Maintain the fiction that pipes can be sought on. */
 810                 result = sys_write(fsp_get_io_fd(fsp), data, n);
 811         }
 812
 813 #else /* HAVE_PWRITE */
 814         errno = ENOSYS;
 815         result = -1;
 816 #endif /* HAVE_PWRITE */
 817
 818         return result;
 819 }
 820
 821 struct vfswrap_pread_state {
 822         ssize_t ret;
 823         int fd;
 824         void *buf;
 825         size_t count;
 826         off_t offset;
 827
 828         struct vfs_aio_state vfs_aio_state;
 829         SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
 830 };
 831
 832 static void vfs_pread_do(void *private_data);
 833 static void vfs_pread_done(struct tevent_req *subreq);
 834 static int vfs_pread_state_destructor(struct vfswrap_pread_state *state);
 835
 836 static struct tevent_req *vfswrap_pread_send(struct vfs_handle_struct *handle,
 837                                              TALLOC_CTX *mem_ctx,
 838                                              struct tevent_context *ev,
 839                                              struct files_struct *fsp,
 840                                              void *data,
 841                                              size_t n, off_t offset)
 842 {
 843         struct tevent_req *req, *subreq;
 844         struct vfswrap_pread_state *state;
 845
 846         req = tevent_req_create(mem_ctx, &state, struct vfswrap_pread_state);
 847         if (req == NULL) {
 848                 return NULL;
 849         }
 850
 851         state->ret = -1;
 852         state->fd = fsp_get_io_fd(fsp);
 853         state->buf = data;
 854         state->count = n;
 855         state->offset = offset;
 856
 857         SMBPROFILE_BYTES_ASYNC_START(syscall_asys_pread, profile_p,
 858                                      state->profile_bytes, n);
 859         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
 860
 861         subreq = pthreadpool_tevent_job_send(
 862                 state, ev, handle->conn->sconn->pool,
 863                 vfs_pread_do, state);
 864         if (tevent_req_nomem(subreq, req)) {
 865                 return tevent_req_post(req, ev);
 866         }
 867         tevent_req_set_callback(subreq, vfs_pread_done, req);
 868
 869         talloc_set_destructor(state, vfs_pread_state_destructor);
 870
 871         return req;
 872 }
 873
 874 static void vfs_pread_do(void *private_data)
 875 {
 876         struct vfswrap_pread_state *state = talloc_get_type_abort(
 877                 private_data, struct vfswrap_pread_state);
 878         struct timespec start_time;
 879         struct timespec end_time;
 880
 881         SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
 882
 883         PROFILE_TIMESTAMP(&start_time);
 884
 885         state->ret = sys_pread_full(state->fd,
 886                                     state->buf,
 887                                     state->count,
 888                                     state->offset);
 889
 890         if (state->ret == -1) {
 891                 state->vfs_aio_state.error = errno;
 892         }
 893
 894         PROFILE_TIMESTAMP(&end_time);
 895
 896         state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
 897
 898         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
 899 }
 900
 901 static int vfs_pread_state_destructor(struct vfswrap_pread_state *state)
 902 {
 903         return -1;
 904 }
 905
 906 static void vfs_pread_done(struct tevent_req *subreq)
 907 {
 908         struct tevent_req *req = tevent_req_callback_data(
 909                 subreq, struct tevent_req);
 910         struct vfswrap_pread_state *state = tevent_req_data(
 911                 req, struct vfswrap_pread_state);
 912         int ret;
 913
 914         ret = pthreadpool_tevent_job_recv(subreq);
 915         TALLOC_FREE(subreq);
 916         SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
 917         talloc_set_destructor(state, NULL);
 918         if (ret != 0) {
 919                 if (ret != EAGAIN) {
 920                         tevent_req_error(req, ret);
 921                         return;
 922                 }
 923                 /*
 924                  * If we get EAGAIN from pthreadpool_tevent_job_recv() this
 925                  * means the lower level pthreadpool failed to create a new
 926                  * thread. Fallback to sync processing in that case to allow
 927                  * some progress for the client.
 928                  */
 929                 vfs_pread_do(state);
 930         }
 931
 932         tevent_req_done(req);
 933 }
 934
 935 static ssize_t vfswrap_pread_recv(struct tevent_req *req,
 936                                   struct vfs_aio_state *vfs_aio_state)
 937 {
 938         struct vfswrap_pread_state *state = tevent_req_data(
 939                 req, struct vfswrap_pread_state);
 940
 941         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
 942                 return -1;
 943         }
 944
 945         *vfs_aio_state = state->vfs_aio_state;
 946         return state->ret;
 947 }
 948
 949 struct vfswrap_pwrite_state {
 950         ssize_t ret;
 951         int fd;
 952         const void *buf;
 953         size_t count;
 954         off_t offset;
 955
 956         struct vfs_aio_state vfs_aio_state;
 957         SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
 958 };
 959
 960 static void vfs_pwrite_do(void *private_data);
 961 static void vfs_pwrite_done(struct tevent_req *subreq);
 962 static int vfs_pwrite_state_destructor(struct vfswrap_pwrite_state *state);
 963
 964 static struct tevent_req *vfswrap_pwrite_send(struct vfs_handle_struct *handle,
 965                                               TALLOC_CTX *mem_ctx,
 966                                               struct tevent_context *ev,
 967                                               struct files_struct *fsp,
 968                                               const void *data,
 969                                               size_t n, off_t offset)
 970 {
 971         struct tevent_req *req, *subreq;
 972         struct vfswrap_pwrite_state *state;
 973
 974         req = tevent_req_create(mem_ctx, &state, struct vfswrap_pwrite_state);
 975         if (req == NULL) {
 976                 return NULL;
 977         }
 978
 979         state->ret = -1;
 980         state->fd = fsp_get_io_fd(fsp);
 981         state->buf = data;
 982         state->count = n;
 983         state->offset = offset;
 984
 985         SMBPROFILE_BYTES_ASYNC_START(syscall_asys_pwrite, profile_p,
 986                                      state->profile_bytes, n);
 987         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
 988
 989         subreq = pthreadpool_tevent_job_send(
 990                 state, ev, handle->conn->sconn->pool,
 991                 vfs_pwrite_do, state);
 992         if (tevent_req_nomem(subreq, req)) {
 993                 return tevent_req_post(req, ev);
 994         }
 995         tevent_req_set_callback(subreq, vfs_pwrite_done, req);
 996
 997         talloc_set_destructor(state, vfs_pwrite_state_destructor);
 998
 999         return req;
1000 }
1001
1002 static void vfs_pwrite_do(void *private_data)
1003 {
1004         struct vfswrap_pwrite_state *state = talloc_get_type_abort(
1005                 private_data, struct vfswrap_pwrite_state);
1006         struct timespec start_time;
1007         struct timespec end_time;
1008
1009         SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
1010
1011         PROFILE_TIMESTAMP(&start_time);
1012
1013         state->ret = sys_pwrite_full(state->fd,
1014                                      state->buf,
1015                                      state->count,
1016                                      state->offset);
1017
1018         if (state->ret == -1) {
1019                 state->vfs_aio_state.error = errno;
1020         }
1021
1022         PROFILE_TIMESTAMP(&end_time);
1023
1024         state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
1025
1026         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
1027 }
1028
1029 static int vfs_pwrite_state_destructor(struct vfswrap_pwrite_state *state)
1030 {
1031         return -1;
1032 }
1033
1034 static void vfs_pwrite_done(struct tevent_req *subreq)
1035 {
1036         struct tevent_req *req = tevent_req_callback_data(
1037                 subreq, struct tevent_req);
1038         struct vfswrap_pwrite_state *state = tevent_req_data(
1039                 req, struct vfswrap_pwrite_state);
1040         int ret;
1041
1042         ret = pthreadpool_tevent_job_recv(subreq);
1043         TALLOC_FREE(subreq);
1044         SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
1045         talloc_set_destructor(state, NULL);
1046         if (ret != 0) {
1047                 if (ret != EAGAIN) {
1048                         tevent_req_error(req, ret);
1049                         return;
1050                 }
1051                 /*
1052                  * If we get EAGAIN from pthreadpool_tevent_job_recv() this
1053                  * means the lower level pthreadpool failed to create a new
1054                  * thread. Fallback to sync processing in that case to allow
1055                  * some progress for the client.
1056                  */
1057                 vfs_pwrite_do(state);
1058         }
1059
1060         tevent_req_done(req);
1061 }
1062
1063 static ssize_t vfswrap_pwrite_recv(struct tevent_req *req,
1064                                    struct vfs_aio_state *vfs_aio_state)
1065 {
1066         struct vfswrap_pwrite_state *state = tevent_req_data(
1067                 req, struct vfswrap_pwrite_state);
1068
1069         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
1070                 return -1;
1071         }
1072
1073         *vfs_aio_state = state->vfs_aio_state;
1074         return state->ret;
1075 }
1076
1077 struct vfswrap_fsync_state {
1078         ssize_t ret;
1079         int fd;
1080
1081         struct vfs_aio_state vfs_aio_state;
1082         SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
1083 };
1084
1085 static void vfs_fsync_do(void *private_data);
1086 static void vfs_fsync_done(struct tevent_req *subreq);
1087 static int vfs_fsync_state_destructor(struct vfswrap_fsync_state *state);
1088
1089 static struct tevent_req *vfswrap_fsync_send(struct vfs_handle_struct *handle,
1090                                              TALLOC_CTX *mem_ctx,
1091                                              struct tevent_context *ev,
1092                                              struct files_struct *fsp)
1093 {
1094         struct tevent_req *req, *subreq;
1095         struct vfswrap_fsync_state *state;
1096
1097         req = tevent_req_create(mem_ctx, &state, struct vfswrap_fsync_state);
1098         if (req == NULL) {
1099                 return NULL;
1100         }
1101
1102         state->ret = -1;
1103         state->fd = fsp_get_io_fd(fsp);
1104
1105         SMBPROFILE_BYTES_ASYNC_START(syscall_asys_fsync, profile_p,
1106                                      state->profile_bytes, 0);
1107         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
1108
1109         subreq = pthreadpool_tevent_job_send(
1110                 state, ev, handle->conn->sconn->pool, vfs_fsync_do, state);
1111         if (tevent_req_nomem(subreq, req)) {
1112                 return tevent_req_post(req, ev);
1113         }
1114         tevent_req_set_callback(subreq, vfs_fsync_done, req);
1115
1116         talloc_set_destructor(state, vfs_fsync_state_destructor);
1117
1118         return req;
1119 }
1120
1121 static void vfs_fsync_do(void *private_data)
1122 {
1123         struct vfswrap_fsync_state *state = talloc_get_type_abort(
1124                 private_data, struct vfswrap_fsync_state);
1125         struct timespec start_time;
1126         struct timespec end_time;
1127
1128         SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
1129
1130         PROFILE_TIMESTAMP(&start_time);
1131
1132         do {
1133                 state->ret = fsync(state->fd);
1134         } while ((state->ret == -1) && (errno == EINTR));
1135
1136         if (state->ret == -1) {
1137                 state->vfs_aio_state.error = errno;
1138         }
1139
1140         PROFILE_TIMESTAMP(&end_time);
1141
1142         state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
1143
1144         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
1145 }
1146
1147 static int vfs_fsync_state_destructor(struct vfswrap_fsync_state *state)
1148 {
1149         return -1;
1150 }
1151
1152 static void vfs_fsync_done(struct tevent_req *subreq)
1153 {
1154         struct tevent_req *req = tevent_req_callback_data(
1155                 subreq, struct tevent_req);
1156         struct vfswrap_fsync_state *state = tevent_req_data(
1157                 req, struct vfswrap_fsync_state);
1158         int ret;
1159
1160         ret = pthreadpool_tevent_job_recv(subreq);
1161         TALLOC_FREE(subreq);
1162         SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
1163         talloc_set_destructor(state, NULL);
1164         if (ret != 0) {
1165                 if (ret != EAGAIN) {
1166                         tevent_req_error(req, ret);
1167                         return;
1168                 }
1169                 /*
1170                  * If we get EAGAIN from pthreadpool_tevent_job_recv() this
1171                  * means the lower level pthreadpool failed to create a new
1172                  * thread. Fallback to sync processing in that case to allow
1173                  * some progress for the client.
1174                  */
1175                 vfs_fsync_do(state);
1176         }
1177
1178         tevent_req_done(req);
1179 }
1180
1181 static int vfswrap_fsync_recv(struct tevent_req *req,
1182                               struct vfs_aio_state *vfs_aio_state)
1183 {
1184         struct vfswrap_fsync_state *state = tevent_req_data(
1185                 req, struct vfswrap_fsync_state);
1186
1187         if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
1188                 return -1;
1189         }
1190
1191         *vfs_aio_state = state->vfs_aio_state;
1192         return state->ret;
1193 }
1194
1195 static off_t vfswrap_lseek(vfs_handle_struct *handle, files_struct *fsp, off_t offset, int whence)
1196 {
1197         off_t result = 0;
1198
1199         START_PROFILE(syscall_lseek);
1200
1201         result = lseek(fsp_get_io_fd(fsp), offset, whence);
1202         /*
1203          * We want to maintain the fiction that we can seek
1204          * on a fifo for file system purposes. This allows
1205          * people to set up UNIX fifo's that feed data to Windows
1206          * applications. JRA.
1207          */
1208
1209         if((result == -1) && (errno == ESPIPE)) {
1210                 result = 0;
1211                 errno = 0;
1212         }
1213
1214         END_PROFILE(syscall_lseek);
1215         return result;
1216 }
1217
1218 static ssize_t vfswrap_sendfile(vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *hdr,
1219                         off_t offset, size_t n)
1220 {
1221         ssize_t result;
1222
1223         START_PROFILE_BYTES(syscall_sendfile, n);
1224         result = sys_sendfile(tofd, fsp_get_io_fd(fromfsp), hdr, offset, n);
1225         END_PROFILE_BYTES(syscall_sendfile);
1226         return result;
1227 }
1228
1229 static ssize_t vfswrap_recvfile(vfs_handle_struct *handle,
1230                         int fromfd,
1231                         files_struct *tofsp,
1232                         off_t offset,
1233                         size_t n)
1234 {
1235         ssize_t result;
1236
1237         START_PROFILE_BYTES(syscall_recvfile, n);
1238         result = sys_recvfile(fromfd, fsp_get_io_fd(tofsp), offset, n);
1239         END_PROFILE_BYTES(syscall_recvfile);
1240         return result;
1241 }
1242
1243 static int vfswrap_renameat(vfs_handle_struct *handle,
1244                           files_struct *srcfsp,
1245                           const struct smb_filename *smb_fname_src,
1246                           files_struct *dstfsp,
1247                           const struct smb_filename *smb_fname_dst)
1248 {
1249         int result = -1;
1250
1251         START_PROFILE(syscall_renameat);
1252
1253         if (is_named_stream(smb_fname_src) || is_named_stream(smb_fname_dst)) {
1254                 errno = ENOENT;
1255                 goto out;
1256         }
1257
1258         result = renameat(fsp_get_pathref_fd(srcfsp),
1259                         smb_fname_src->base_name,
1260                         fsp_get_pathref_fd(dstfsp),
1261                         smb_fname_dst->base_name);
1262
1263  out:
1264         END_PROFILE(syscall_renameat);
1265         return result;
1266 }
1267
1268 static int vfswrap_stat(vfs_handle_struct *handle,
1269                         struct smb_filename *smb_fname)
1270 {
1271         int result = -1;
1272
1273         START_PROFILE(syscall_stat);
1274
1275         if (is_named_stream(smb_fname)) {
1276                 errno = ENOENT;
1277                 goto out;
1278         }
1279
1280         result = sys_stat(smb_fname->base_name, &smb_fname->st,
1281                           lp_fake_directory_create_times(SNUM(handle->conn)));
1282  out:
1283         END_PROFILE(syscall_stat);
1284         return result;
1285 }
1286
1287 static int vfswrap_fstat(vfs_handle_struct *handle, files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1288 {
1289         int result;
1290
1291         START_PROFILE(syscall_fstat);
1292         result = sys_fstat(fsp_get_pathref_fd(fsp),
1293                            sbuf, lp_fake_directory_create_times(SNUM(handle->conn)));
1294         END_PROFILE(syscall_fstat);
1295         return result;
1296 }
1297
1298 static int vfswrap_lstat(vfs_handle_struct *handle,
1299                          struct smb_filename *smb_fname)
1300 {
1301         int result = -1;
1302
1303         START_PROFILE(syscall_lstat);
1304
1305         if (is_named_stream(smb_fname)) {
1306                 errno = ENOENT;
1307                 goto out;
1308         }
1309
1310         result = sys_lstat(smb_fname->base_name, &smb_fname->st,
1311                            lp_fake_directory_create_times(SNUM(handle->conn)));
1312  out:
1313         END_PROFILE(syscall_lstat);
1314         return result;
1315 }
1316
1317 static NTSTATUS vfswrap_translate_name(struct vfs_handle_struct *handle,
1318                                        const char *name,
1319                                        enum vfs_translate_direction direction,
1320                                        TALLOC_CTX *mem_ctx,
1321                                        char **mapped_name)
1322 {
1323         return NT_STATUS_NONE_MAPPED;
1324 }
1325
1326 /**
1327  * Return allocated parent directory and basename of path
1328  *
1329  * Note: if requesting name, it is returned as talloc child of the
1330  * parent. Freeing the parent is thus sufficient to free both.
1331  */
1332 static NTSTATUS vfswrap_parent_pathname(struct vfs_handle_struct *handle,
1333                                         TALLOC_CTX *mem_ctx,
1334                                         const struct smb_filename *smb_fname_in,
1335                                         struct smb_filename **parent_dir_out,
1336                                         struct smb_filename **atname_out)
1337 {
1338         TALLOC_CTX *frame = talloc_stackframe();
1339         struct smb_filename *parent = NULL;
1340         struct smb_filename *name = NULL;
1341         char *p = NULL;
1342
1343         parent = cp_smb_filename(frame, smb_fname_in);
1344         if (parent == NULL) {
1345                 TALLOC_FREE(frame);
1346                 return NT_STATUS_NO_MEMORY;
1347         }
1348         TALLOC_FREE(parent->stream_name);
1349         SET_STAT_INVALID(parent->st);
1350
1351         p = strrchr_m(parent->base_name, '/'); /* Find final '/', if any */
1352         if (p == NULL) {
1353                 TALLOC_FREE(parent->base_name);
1354                 parent->base_name = talloc_strdup(parent, ".");
1355                 if (parent->base_name == NULL) {
1356                         TALLOC_FREE(frame);
1357                         return NT_STATUS_NO_MEMORY;
1358                 }
1359                 p = smb_fname_in->base_name;
1360         } else {
1361                 *p = '\0';
1362                 p++;
1363         }
1364
1365         if (atname_out == NULL) {
1366                 *parent_dir_out = talloc_move(mem_ctx, &parent);
1367                 TALLOC_FREE(frame);
1368                 return NT_STATUS_OK;
1369         }
1370
1371         name = cp_smb_filename(frame, smb_fname_in);
1372         if (name == NULL) {
1373                 TALLOC_FREE(frame);
1374                 return NT_STATUS_NO_MEMORY;
1375         }
1376         TALLOC_FREE(name->base_name);
1377
1378         name->base_name = talloc_strdup(name, p);
1379         if (name->base_name == NULL) {
1380                 TALLOC_FREE(frame);
1381                 return NT_STATUS_NO_MEMORY;
1382         }
1383
1384         *parent_dir_out = talloc_move(mem_ctx, &parent);
1385         *atname_out = talloc_move(*parent_dir_out, &name);
1386         TALLOC_FREE(frame);
1387         return NT_STATUS_OK;
1388 }
1389
1390 /*
1391  * Implement the default fsctl operation.
1392  */
1393 static bool vfswrap_logged_ioctl_message = false;
1394
1395 static NTSTATUS vfswrap_fsctl(struct vfs_handle_struct *handle,
1396                               struct files_struct *fsp,
1397                               TALLOC_CTX *ctx,
1398                               uint32_t function,
1399                               uint16_t req_flags, /* Needed for UNICODE ... */
1400                               const uint8_t *_in_data,
1401                               uint32_t in_len,
1402                               uint8_t **_out_data,
1403                               uint32_t max_out_len,
1404                               uint32_t *out_len)
1405 {
1406         const char *in_data = (const char *)_in_data;
1407         char **out_data = (char **)_out_data;
1408         NTSTATUS status;
1409
1410         switch (function) {
1411         case FSCTL_SET_SPARSE:
1412         {
1413                 bool set_sparse = true;
1414
1415                 if (in_len >= 1 && in_data[0] == 0) {
1416                         set_sparse = false;
1417                 }
1418
1419                 status = file_set_sparse(handle->conn, fsp, set_sparse);
1420
1421                 DEBUG(NT_STATUS_IS_OK(status) ? 10 : 9,
1422                       ("FSCTL_SET_SPARSE: fname[%s] set[%u] - %s\n",
1423                        smb_fname_str_dbg(fsp->fsp_name), set_sparse,
1424                        nt_errstr(status)));
1425
1426                 return status;
1427         }
1428
1429         case FSCTL_CREATE_OR_GET_OBJECT_ID:
1430         {
1431                 unsigned char objid[16];
1432                 char *return_data = NULL;
1433
1434                 /* This should return the object-id on this file.
1435                  * I think I'll make this be the inode+dev. JRA.
1436                  */
1437
1438                 DEBUG(10,("FSCTL_CREATE_OR_GET_OBJECT_ID: called on %s\n",
1439                           fsp_fnum_dbg(fsp)));
1440
1441                 *out_len = MIN(max_out_len, 64);
1442
1443                 /* Hmmm, will this cause problems if less data asked for? */
1444                 return_data = talloc_array(ctx, char, 64);
1445                 if (return_data == NULL) {
1446                         return NT_STATUS_NO_MEMORY;
1447                 }
1448
1449                 /* For backwards compatibility only store the dev/inode. */
1450                 push_file_id_16(return_data, &fsp->file_id);
1451                 memcpy(return_data+16,create_volume_objectid(fsp->conn,objid),16);
1452                 push_file_id_16(return_data+32, &fsp->file_id);
1453                 memset(return_data+48, 0, 16);
1454                 *out_data = return_data;
1455                 return NT_STATUS_OK;
1456         }
1457
1458         case FSCTL_GET_REPARSE_POINT:
1459         {
1460                 status = fsctl_get_reparse_point(
1461                         fsp, ctx, out_data, max_out_len, out_len);
1462                 return status;
1463         }
1464
1465         case FSCTL_SET_REPARSE_POINT:
1466         {
1467                 status = fsctl_set_reparse_point(fsp, ctx, _in_data, in_len);
1468                 return status;
1469         }
1470
1471         case FSCTL_DELETE_REPARSE_POINT:
1472         {
1473                 status = fsctl_del_reparse_point(fsp, ctx, _in_data, in_len);
1474                 return status;
1475         }
1476
1477         case FSCTL_GET_SHADOW_COPY_DATA:
1478         {
1479                 /*
1480                  * This is called to retrieve the number of Shadow Copies (a.k.a. snapshots)
1481                  * and return their volume names.  If max_data_count is 16, then it is just
1482                  * asking for the number of volumes and length of the combined names.
1483                  *
1484                  * pdata is the data allocated by our caller, but that uses
1485                  * total_data_count (which is 0 in our case) rather than max_data_count.
1486                  * Allocate the correct amount and return the pointer to let
1487                  * it be deallocated when we return.
1488                  */
1489                 struct shadow_copy_data *shadow_data = NULL;
1490                 bool labels = False;
1491                 uint32_t labels_data_count = 0;
1492                 uint32_t i;
1493                 char *cur_pdata = NULL;
1494
1495                 if (max_out_len < 16) {
1496                         DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: max_data_count(%u) < 16 is invalid!\n",
1497                                 max_out_len));
1498                         return NT_STATUS_INVALID_PARAMETER;
1499                 }
1500
1501                 if (max_out_len > 16) {
1502                         labels = True;
1503                 }
1504
1505                 shadow_data = talloc_zero(ctx, struct shadow_copy_data);
1506                 if (shadow_data == NULL) {
1507                         DEBUG(0,("TALLOC_ZERO() failed!\n"));
1508                         return NT_STATUS_NO_MEMORY;
1509                 }
1510
1511                 /*
1512                  * Call the VFS routine to actually do the work.
1513                  */
1514                 if (SMB_VFS_GET_SHADOW_COPY_DATA(fsp, shadow_data, labels)!=0) {
1515                         int log_lev = 0;
1516                         if (errno == 0) {
1517                                 /* broken module didn't set errno on error */
1518                                 status = NT_STATUS_UNSUCCESSFUL;
1519                         } else {
1520                                 status = map_nt_error_from_unix(errno);
1521                                 if (NT_STATUS_EQUAL(status,
1522                                                     NT_STATUS_NOT_SUPPORTED)) {
1523                                         log_lev = 5;
1524                                 }
1525                         }
1526                         DEBUG(log_lev, ("FSCTL_GET_SHADOW_COPY_DATA: "
1527                                         "connectpath %s, failed - %s.\n",
1528                                         fsp->conn->connectpath,
1529                                         nt_errstr(status)));
1530                         TALLOC_FREE(shadow_data);
1531                         return status;
1532                 }
1533
1534                 labels_data_count = (shadow_data->num_volumes * 2 *
1535                                         sizeof(SHADOW_COPY_LABEL)) + 2;
1536
1537                 if (!labels) {
1538                         *out_len = 16;
1539                 } else {
1540                         *out_len = 12 + labels_data_count;
1541                 }
1542
1543                 if (max_out_len < *out_len) {
1544                         DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: max_data_count(%u) too small (%u) bytes needed!\n",
1545                                 max_out_len, *out_len));
1546                         TALLOC_FREE(shadow_data);
1547                         return NT_STATUS_BUFFER_TOO_SMALL;
1548                 }
1549
1550                 cur_pdata = talloc_zero_array(ctx, char, *out_len);
1551                 if (cur_pdata == NULL) {
1552                         TALLOC_FREE(shadow_data);
1553                         return NT_STATUS_NO_MEMORY;
1554                 }
1555
1556                 *out_data = cur_pdata;
1557
1558                 /* num_volumes 4 bytes */
1559                 SIVAL(cur_pdata, 0, shadow_data->num_volumes);
1560
1561                 if (labels) {
1562                         /* num_labels 4 bytes */
1563                         SIVAL(cur_pdata, 4, shadow_data->num_volumes);
1564                 }
1565
1566                 /* needed_data_count 4 bytes */
1567                 SIVAL(cur_pdata, 8, labels_data_count);
1568
1569                 cur_pdata += 12;
1570
1571                 DEBUG(10,("FSCTL_GET_SHADOW_COPY_DATA: %u volumes for path[%s].\n",
1572                           shadow_data->num_volumes, fsp_str_dbg(fsp)));
1573                 if (labels && shadow_data->labels) {
1574                         for (i=0; i<shadow_data->num_volumes; i++) {
1575                                 size_t len = 0;
1576                                 status = srvstr_push(cur_pdata, req_flags,
1577                                             cur_pdata, shadow_data->labels[i],
1578                                             2 * sizeof(SHADOW_COPY_LABEL),
1579                                             STR_UNICODE|STR_TERMINATE, &len);
1580                                 if (!NT_STATUS_IS_OK(status)) {
1581                                         TALLOC_FREE(*out_data);
1582                                         TALLOC_FREE(shadow_data);
1583                                         return status;
1584                                 }
1585                                 cur_pdata += 2 * sizeof(SHADOW_COPY_LABEL);
1586                                 DEBUGADD(10,("Label[%u]: '%s'\n",i,shadow_data->labels[i]));
1587                         }
1588                 }
1589
1590                 TALLOC_FREE(shadow_data);
1591
1592                 return NT_STATUS_OK;
1593         }
1594
1595         case FSCTL_FIND_FILES_BY_SID:
1596         {
1597                 /* pretend this succeeded -
1598                  *
1599                  * we have to send back a list with all files owned by this SID
1600                  *
1601                  * but I have to check that --metze
1602                  */
1603                 ssize_t ret;
1604                 struct dom_sid sid;
1605                 struct dom_sid_buf buf;
1606                 uid_t uid;
1607                 size_t sid_len;
1608
1609                 DEBUG(10, ("FSCTL_FIND_FILES_BY_SID: called on %s\n",
1610                            fsp_fnum_dbg(fsp)));
1611
1612                 if (in_len < 8) {
1613                         /* NT_STATUS_BUFFER_TOO_SMALL maybe? */
1614                         return NT_STATUS_INVALID_PARAMETER;
1615                 }
1616
1617                 sid_len = MIN(in_len - 4,SID_MAX_SIZE);
1618
1619                 /* unknown 4 bytes: this is not the length of the sid :-(  */
1620                 /*unknown = IVAL(pdata,0);*/
1621
1622                 ret = sid_parse(_in_data + 4, sid_len, &sid);
1623                 if (ret == -1) {
1624                         return NT_STATUS_INVALID_PARAMETER;
1625                 }
1626                 DEBUGADD(10, ("for SID: %s\n",
1627                               dom_sid_str_buf(&sid, &buf)));
1628
1629                 if (!sid_to_uid(&sid, &uid)) {
1630                         DEBUG(0,("sid_to_uid: failed, sid[%s] sid_len[%lu]\n",
1631                                  dom_sid_str_buf(&sid, &buf),
1632                                  (unsigned long)sid_len));
1633                         uid = (-1);
1634                 }
1635
1636                 /* we can take a look at the find source :-)
1637                  *
1638                  * find ./ -uid $uid  -name '*'   is what we need here
1639                  *
1640                  *
1641                  * and send 4bytes len and then NULL terminated unicode strings
1642                  * for each file
1643                  *
1644                  * but I don't know how to deal with the paged results
1645                  * (maybe we can hang the result anywhere in the fsp struct)
1646                  *
1647                  * but I don't know how to deal with the paged results
1648                  * (maybe we can hang the result anywhere in the fsp struct)
1649                  *
1650                  * we don't send all files at once
1651                  * and at the next we should *not* start from the beginning,
1652                  * so we have to cache the result
1653                  *
1654                  * --metze
1655                  */
1656
1657                 /* this works for now... */
1658                 return NT_STATUS_OK;
1659         }
1660
1661         case FSCTL_QUERY_ALLOCATED_RANGES:
1662         {
1663                 /* FIXME: This is just a dummy reply, telling that all of the
1664                  * file is allocated. MKS cp needs that.
1665                  * Adding the real allocated ranges via FIEMAP on Linux
1666                  * and SEEK_DATA/SEEK_HOLE on Solaris is needed to make
1667                  * this FSCTL correct for sparse files.
1668                  */
1669                 uint64_t offset, length;
1670                 char *out_data_tmp = NULL;
1671
1672                 if (in_len != 16) {
1673                         DEBUG(0,("FSCTL_QUERY_ALLOCATED_RANGES: data_count(%u) != 16 is invalid!\n",
1674                                 in_len));
1675                         return NT_STATUS_INVALID_PARAMETER;
1676                 }
1677
1678                 if (max_out_len < 16) {
1679                         DEBUG(0,("FSCTL_QUERY_ALLOCATED_RANGES: max_out_len (%u) < 16 is invalid!\n",
1680                                 max_out_len));
1681                         return NT_STATUS_INVALID_PARAMETER;
1682                 }
1683
1684                 offset = BVAL(in_data,0);
1685                 length = BVAL(in_data,8);
1686
1687                 if (offset + length < offset) {
1688                         /* No 64-bit integer wrap. */
1689                         return NT_STATUS_INVALID_PARAMETER;
1690                 }
1691
1692                 /* Shouldn't this be SMB_VFS_STAT ... ? */
1693                 status = vfs_stat_fsp(fsp);
1694                 if (!NT_STATUS_IS_OK(status)) {
1695                         return status;
1696                 }
1697
1698                 *out_len = 16;
1699                 out_data_tmp = talloc_array(ctx, char, *out_len);
1700                 if (out_data_tmp == NULL) {
1701                         DEBUG(10, ("unable to allocate memory for response\n"));
1702                         return NT_STATUS_NO_MEMORY;
1703                 }
1704
1705                 if (offset > fsp->fsp_name->st.st_ex_size ||
1706                                 fsp->fsp_name->st.st_ex_size == 0 ||
1707                                 length == 0) {
1708                         memset(out_data_tmp, 0, *out_len);
1709                 } else {
1710                         uint64_t end = offset + length;
1711                         end = MIN(end, fsp->fsp_name->st.st_ex_size);
1712                         SBVAL(out_data_tmp, 0, 0);
1713                         SBVAL(out_data_tmp, 8, end);
1714                 }
1715
1716                 *out_data = out_data_tmp;
1717
1718                 return NT_STATUS_OK;
1719         }
1720
1721         case FSCTL_IS_VOLUME_DIRTY:
1722         {
1723                 DEBUG(10,("FSCTL_IS_VOLUME_DIRTY: called on %s "
1724                           "(but remotely not supported)\n", fsp_fnum_dbg(fsp)));
1725                 /*
1726                  * http://msdn.microsoft.com/en-us/library/cc232128%28PROT.10%29.aspx
1727                  * says we have to respond with NT_STATUS_INVALID_PARAMETER
1728                  */
1729                 return NT_STATUS_INVALID_PARAMETER;
1730         }
1731
1732         default:
1733                 /*
1734                  * Only print once ... unfortunately there could be lots of
1735                  * different FSCTLs that are called.
1736                  */
1737                 if (!vfswrap_logged_ioctl_message) {
1738                         vfswrap_logged_ioctl_message = true;
1739                         DEBUG(2, ("%s (0x%x): Currently not implemented.\n",
1740                         __func__, function));
1741                 }
1742         }
1743
1744         return NT_STATUS_NOT_SUPPORTED;
1745 }
1746
1747 static bool vfswrap_is_offline(struct connection_struct *conn,
1748                                const struct smb_filename *fname);
1749
1750 struct vfswrap_get_dos_attributes_state {
1751         struct vfs_aio_state aio_state;
1752         connection_struct *conn;
1753         TALLOC_CTX *mem_ctx;
1754         struct tevent_context *ev;
1755         files_struct *dir_fsp;
1756         struct smb_filename *smb_fname;
1757         uint32_t dosmode;
1758         bool as_root;
1759 };
1760
1761 static void vfswrap_get_dos_attributes_getxattr_done(struct tevent_req *subreq);
1762
1763 static struct tevent_req *vfswrap_get_dos_attributes_send(
1764                         TALLOC_CTX *mem_ctx,
1765                         struct tevent_context *ev,
1766                         struct vfs_handle_struct *handle,
1767                         files_struct *dir_fsp,
1768                         struct smb_filename *smb_fname)
1769 {
1770         struct tevent_req *req = NULL;
1771         struct tevent_req *subreq = NULL;
1772         struct vfswrap_get_dos_attributes_state *state = NULL;
1773
1774         req = tevent_req_create(mem_ctx, &state,
1775                                 struct vfswrap_get_dos_attributes_state);
1776         if (req == NULL) {
1777                 return NULL;
1778         }
1779
1780         *state = (struct vfswrap_get_dos_attributes_state) {
1781                 .conn = dir_fsp->conn,
1782                 .mem_ctx = mem_ctx,
1783                 .ev = ev,
1784                 .dir_fsp = dir_fsp,
1785                 .smb_fname = smb_fname,
1786         };
1787
1788         subreq = SMB_VFS_GETXATTRAT_SEND(state,
1789                                          ev,
1790                                          dir_fsp,
1791                                          smb_fname,
1792                                          SAMBA_XATTR_DOS_ATTRIB,
1793                                          sizeof(fstring));
1794         if (tevent_req_nomem(subreq, req)) {
1795                 return tevent_req_post(req, ev);
1796         }
1797         tevent_req_set_callback(subreq,
1798                                 vfswrap_get_dos_attributes_getxattr_done,
1799                                 req);
1800
1801         return req;
1802 }
1803
1804 static void vfswrap_get_dos_attributes_getxattr_done(struct tevent_req *subreq)
1805 {
1806         struct tevent_req *req =
1807                 tevent_req_callback_data(subreq,
1808                 struct tevent_req);
1809         struct vfswrap_get_dos_attributes_state *state =
1810                 tevent_req_data(req,
1811                 struct vfswrap_get_dos_attributes_state);
1812         ssize_t xattr_size;
1813         DATA_BLOB blob = {0};
1814         char *path = NULL;
1815         char *tofree = NULL;
1816         char pathbuf[PATH_MAX+1];
1817         ssize_t pathlen;
1818         struct smb_filename smb_fname;
1819         bool offline;
1820         NTSTATUS status;
1821
1822         xattr_size = SMB_VFS_GETXATTRAT_RECV(subreq,
1823                                              &state->aio_state,
1824                                              state,
1825                                              &blob.data);
1826         TALLOC_FREE(subreq);
1827         if (xattr_size == -1) {
1828                 status = map_nt_error_from_unix(state->aio_state.error);
1829
1830                 if (state->as_root) {
1831                         tevent_req_nterror(req, status);
1832                         return;
1833                 }
1834                 if (!NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED)) {
1835                         tevent_req_nterror(req, status);
1836                         return;
1837                 }
1838
1839                 state->as_root = true;
1840
1841                 become_root();
1842                 subreq = SMB_VFS_GETXATTRAT_SEND(state,
1843                                                  state->ev,
1844                                                  state->dir_fsp,
1845                                                  state->smb_fname,
1846                                                  SAMBA_XATTR_DOS_ATTRIB,
1847                                                  sizeof(fstring));
1848                 unbecome_root();
1849                 if (tevent_req_nomem(subreq, req)) {
1850                         return;
1851                 }
1852                 tevent_req_set_callback(subreq,
1853                                         vfswrap_get_dos_attributes_getxattr_done,
1854                                         req);
1855                 return;
1856         }
1857
1858         blob.length = xattr_size;
1859
1860         status = parse_dos_attribute_blob(state->smb_fname,
1861                                           blob,
1862                                           &state->dosmode);
1863         if (!NT_STATUS_IS_OK(status)) {
1864                 tevent_req_nterror(req, status);
1865                 return;
1866         }
1867
1868         pathlen = full_path_tos(state->dir_fsp->fsp_name->base_name,
1869                                 state->smb_fname->base_name,
1870                                 pathbuf,
1871                                 sizeof(pathbuf),
1872                                 &path,
1873                                 &tofree);
1874         if (pathlen == -1) {
1875                 tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
1876                 return;
1877         }
1878
1879         smb_fname = (struct smb_filename) {
1880                 .base_name = path,
1881                 .st = state->smb_fname->st,
1882                 .flags = state->smb_fname->flags,
1883                 .twrp = state->smb_fname->twrp,
1884         };
1885
1886         offline = vfswrap_is_offline(state->conn, &smb_fname);
1887         if (offline) {
1888                 state->dosmode |= FILE_ATTRIBUTE_OFFLINE;
1889         }
1890         TALLOC_FREE(tofree);
1891
1892         tevent_req_done(req);
1893         return;
1894 }
1895
1896 static NTSTATUS vfswrap_get_dos_attributes_recv(struct tevent_req *req,
1897                                                 struct vfs_aio_state *aio_state,
1898                                                 uint32_t *dosmode)
1899 {
1900         struct vfswrap_get_dos_attributes_state *state =
1901                 tevent_req_data(req,
1902                 struct vfswrap_get_dos_attributes_state);
1903         NTSTATUS status;
1904
1905         if (tevent_req_is_nterror(req, &status)) {
1906                 tevent_req_received(req);
1907                 return status;
1908         }
1909
1910         *aio_state = state->aio_state;
1911         *dosmode = state->dosmode;
1912         tevent_req_received(req);
1913         return NT_STATUS_OK;
1914 }
1915
1916 static NTSTATUS vfswrap_fget_dos_attributes(struct vfs_handle_struct *handle,
1917                                             struct files_struct *fsp,
1918                                             uint32_t *dosmode)
1919 {
1920         bool offline;
1921
1922         offline = vfswrap_is_offline(handle->conn, fsp->fsp_name);
1923         if (offline) {
1924                 *dosmode |= FILE_ATTRIBUTE_OFFLINE;
1925         }
1926
1927         return fget_ea_dos_attribute(fsp, dosmode);
1928 }
1929
1930 static NTSTATUS vfswrap_fset_dos_attributes(struct vfs_handle_struct *handle,
1931                                             struct files_struct *fsp,
1932                                             uint32_t dosmode)
1933 {
1934         return set_ea_dos_attribute(handle->conn, fsp->fsp_name, dosmode);
1935 }
1936
1937 static struct vfs_offload_ctx *vfswrap_offload_ctx;
1938
1939 struct vfswrap_offload_read_state {
1940         DATA_BLOB token;
1941 };
1942
1943 static struct tevent_req *vfswrap_offload_read_send(
1944         TALLOC_CTX *mem_ctx,
1945         struct tevent_context *ev,
1946         struct vfs_handle_struct *handle,
1947         struct files_struct *fsp,
1948         uint32_t fsctl,
1949         uint32_t ttl,
1950         off_t offset,
1951         size_t to_copy)
1952 {
1953         struct tevent_req *req = NULL;
1954         struct vfswrap_offload_read_state *state = NULL;
1955         NTSTATUS status;
1956
1957         req = tevent_req_create(mem_ctx, &state,
1958                                 struct vfswrap_offload_read_state);
1959         if (req == NULL) {
1960                 return NULL;
1961         }
1962
1963         status = vfs_offload_token_ctx_init(fsp->conn->sconn->client,
1964                                             &vfswrap_offload_ctx);
1965         if (tevent_req_nterror(req, status)) {
1966                 return tevent_req_post(req, ev);
1967         }
1968
1969         if (fsctl != FSCTL_SRV_REQUEST_RESUME_KEY) {
1970                 tevent_req_nterror(req, NT_STATUS_INVALID_DEVICE_REQUEST);
1971                 return tevent_req_post(req, ev);
1972         }
1973
1974         status = vfs_offload_token_create_blob(state, fsp, fsctl,
1975                                                &state->token);
1976         if (tevent_req_nterror(req, status)) {
1977                 return tevent_req_post(req, ev);
1978         }
1979
1980         status = vfs_offload_token_db_store_fsp(vfswrap_offload_ctx, fsp,
1981                                                 &state->token);
1982         if (tevent_req_nterror(req, status)) {
1983                 return tevent_req_post(req, ev);
1984         }
1985
1986         tevent_req_done(req);
1987         return tevent_req_post(req, ev);
1988 }
1989
1990 static NTSTATUS vfswrap_offload_read_recv(struct tevent_req *req,
1991                                           struct vfs_handle_struct *handle,
1992                                           TALLOC_CTX *mem_ctx,
1993                                           uint32_t *flags,
1994                                           uint64_t *xferlen,
1995                                           DATA_BLOB *token)
1996 {
1997         struct vfswrap_offload_read_state *state = tevent_req_data(
1998                 req, struct vfswrap_offload_read_state);
1999         NTSTATUS status;
2000
2001         if (tevent_req_is_nterror(req, &status)) {
2002                 tevent_req_received(req);
2003                 return status;
2004         }
2005
2006         *flags = 0;
2007         *xferlen = 0;
2008         token->length = state->token.length;
2009         token->data = talloc_move(mem_ctx, &state->token.data);
2010
2011         tevent_req_received(req);
2012         return NT_STATUS_OK;
2013 }
2014
2015 struct vfswrap_offload_write_state {
2016         uint8_t *buf;
2017         bool read_lck_locked;
2018         bool write_lck_locked;
2019         DATA_BLOB *token;
2020         struct tevent_context *src_ev;
2021         struct files_struct *src_fsp;
2022         off_t src_off;
2023         struct tevent_context *dst_ev;
2024         struct files_struct *dst_fsp;
2025         off_t dst_off;
2026         off_t to_copy;
2027         off_t remaining;
2028         off_t copied;
2029         size_t next_io_size;
2030 };
2031
2032 static void vfswrap_offload_write_cleanup(struct tevent_req *req,
2033                                           enum tevent_req_state req_state)
2034 {
2035         struct vfswrap_offload_write_state *state = tevent_req_data(
2036                 req, struct vfswrap_offload_write_state);
2037         bool ok;
2038
2039         if (state->dst_fsp == NULL) {
2040                 return;
2041         }
2042
2043         ok = change_to_user_and_service_by_fsp(state->dst_fsp);
2044         SMB_ASSERT(ok);
2045         state->dst_fsp = NULL;
2046 }
2047
2048 static NTSTATUS vfswrap_offload_copy_file_range(struct tevent_req *req);
2049 static NTSTATUS vfswrap_offload_write_loop(struct tevent_req *req);
2050
2051 static struct tevent_req *vfswrap_offload_write_send(
2052         struct vfs_handle_struct *handle,
2053         TALLOC_CTX *mem_ctx,
2054         struct tevent_context *ev,
2055         uint32_t fsctl,
2056         DATA_BLOB *token,
2057         off_t transfer_offset,
2058         struct files_struct *dest_fsp,
2059         off_t dest_off,
2060         off_t to_copy)
2061 {
2062         struct tevent_req *req;
2063         struct vfswrap_offload_write_state *state = NULL;
2064         /* off_t is signed! */
2065         off_t max_offset = INT64_MAX - to_copy;
2066         size_t num = MIN(to_copy, COPYCHUNK_MAX_TOTAL_LEN);
2067         files_struct *src_fsp = NULL;
2068         NTSTATUS status;
2069         bool ok;
2070
2071         req = tevent_req_create(mem_ctx, &state,
2072                                 struct vfswrap_offload_write_state);
2073         if (req == NULL) {
2074                 return NULL;
2075         }
2076
2077         *state = (struct vfswrap_offload_write_state) {
2078                 .token = token,
2079                 .src_off = transfer_offset,
2080                 .dst_ev = ev,
2081                 .dst_fsp = dest_fsp,
2082                 .dst_off = dest_off,
2083                 .to_copy = to_copy,
2084                 .remaining = to_copy,
2085         };
2086
2087         tevent_req_set_cleanup_fn(req, vfswrap_offload_write_cleanup);
2088
2089         switch (fsctl) {
2090         case FSCTL_SRV_COPYCHUNK:
2091         case FSCTL_SRV_COPYCHUNK_WRITE:
2092                 break;
2093
2094         case FSCTL_OFFLOAD_WRITE:
2095                 tevent_req_nterror(req, NT_STATUS_NOT_IMPLEMENTED);
2096                 return tevent_req_post(req, ev);
2097
2098         case FSCTL_DUP_EXTENTS_TO_FILE:
2099                 DBG_DEBUG("COW clones not supported by vfs_default\n");
2100                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
2101                 return tevent_req_post(req, ev);
2102
2103         default:
2104                 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
2105                 return tevent_req_post(req, ev);
2106         }
2107
2108         /*
2109          * From here on we assume a copy-chunk fsctl
2110          */
2111
2112         if (to_copy == 0) {
2113                 tevent_req_done(req);
2114                 return tevent_req_post(req, ev);
2115         }
2116
2117         if (state->src_off > max_offset) {
2118                 /*
2119                  * Protect integer checks below.
2120                  */
2121                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
2122                 return tevent_req_post(req, ev);
2123         }
2124         if (state->src_off < 0) {
2125                 /*
2126                  * Protect integer checks below.
2127                  */
2128                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
2129                 return tevent_req_post(req, ev);
2130         }
2131         if (state->dst_off > max_offset) {
2132                 /*
2133                  * Protect integer checks below.
2134                  */
2135                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
2136                 return tevent_req_post(req, ev);
2137         }
2138         if (state->dst_off < 0) {
2139                 /*
2140                  * Protect integer checks below.
2141                  */
2142                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
2143                 return tevent_req_post(req, ev);
2144         }
2145
2146         status = vfs_offload_token_db_fetch_fsp(vfswrap_offload_ctx,
2147                                                 token, &src_fsp);
2148         if (tevent_req_nterror(req, status)) {
2149                 return tevent_req_post(req, ev);
2150         }
2151
2152         DBG_DEBUG("server side copy chunk of length %" PRIu64 "\n", to_copy);
2153
2154         status = vfs_offload_token_check_handles(fsctl, src_fsp, dest_fsp);
2155         if (!NT_STATUS_IS_OK(status)) {
2156                 tevent_req_nterror(req, status);
2157                 return tevent_req_post(req, ev);
2158         }
2159
2160         ok = change_to_user_and_service_by_fsp(src_fsp);
2161         if (!ok) {
2162                 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
2163                 return tevent_req_post(req, ev);
2164         }
2165
2166         state->src_ev = src_fsp->conn->sconn->ev_ctx;
2167         state->src_fsp = src_fsp;
2168
2169         status = vfs_stat_fsp(src_fsp);
2170         if (tevent_req_nterror(req, status)) {
2171                 return tevent_req_post(req, ev);
2172         }
2173
2174         if (src_fsp->fsp_name->st.st_ex_size < state->src_off + to_copy) {
2175                 /*
2176                  * [MS-SMB2] 3.3.5.15.6 Handling a Server-Side Data Copy Request
2177                  *   If the SourceOffset or SourceOffset + Length extends beyond
2178                  *   the end of file, the server SHOULD<240> treat this as a
2179                  *   STATUS_END_OF_FILE error.
2180                  * ...
2181                  *   <240> Section 3.3.5.15.6: Windows servers will return
2182                  *   STATUS_INVALID_VIEW_SIZE instead of STATUS_END_OF_FILE.
2183                  */
2184                 tevent_req_nterror(req, NT_STATUS_INVALID_VIEW_SIZE);
2185                 return tevent_req_post(req, ev);
2186         }
2187
2188         status = vfswrap_offload_copy_file_range(req);
2189         if (NT_STATUS_IS_OK(status)) {
2190                 tevent_req_done(req);
2191                 return tevent_req_post(req, ev);
2192         }
2193         if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
2194                 tevent_req_nterror(req, status);
2195                 return tevent_req_post(req, ev);
2196         }
2197
2198         state->buf = talloc_array(state, uint8_t, num);
2199         if (tevent_req_nomem(state->buf, req)) {
2200                 return tevent_req_post(req, ev);
2201         }
2202
2203         status = vfswrap_offload_write_loop(req);
2204         if (!NT_STATUS_IS_OK(status)) {
2205                 tevent_req_nterror(req, status);
2206                 return tevent_req_post(req, ev);
2207         }
2208
2209         return req;
2210 }
2211
2212 static NTSTATUS vfswrap_offload_copy_file_range(struct tevent_req *req)
2213 {
2214         struct vfswrap_offload_write_state *state = tevent_req_data(
2215                 req, struct vfswrap_offload_write_state);
2216         struct lock_struct lck;
2217         ssize_t nwritten;
2218         NTSTATUS status;
2219         bool same_file;
2220         bool ok;
2221         static bool try_copy_file_range = true;
2222
2223         if (!try_copy_file_range) {
2224                 return NT_STATUS_MORE_PROCESSING_REQUIRED;
2225         }
2226
2227         same_file = file_id_equal(&state->src_fsp->file_id,
2228                                   &state->dst_fsp->file_id);
2229         if (same_file &&
2230             sys_io_ranges_overlap(state->remaining,
2231                                   state->src_off,
2232                                   state->remaining,
2233                                   state->dst_off))
2234         {
2235                 return NT_STATUS_MORE_PROCESSING_REQUIRED;
2236         }
2237
2238         if (is_named_stream(state->src_fsp->fsp_name) ||
2239             is_named_stream(state->dst_fsp->fsp_name))
2240         {
2241                 return NT_STATUS_MORE_PROCESSING_REQUIRED;
2242         }
2243
2244         init_strict_lock_struct(state->src_fsp,
2245                                 state->src_fsp->op->global->open_persistent_id,
2246                                 state->src_off,
2247                                 state->remaining,
2248                                 READ_LOCK,
2249                                 &lck);
2250
2251         ok = SMB_VFS_STRICT_LOCK_CHECK(state->src_fsp->conn,
2252                                  state->src_fsp,
2253                                  &lck);
2254         if (!ok) {
2255                 return NT_STATUS_FILE_LOCK_CONFLICT;
2256         }
2257
2258         ok = change_to_user_and_service_by_fsp(state->dst_fsp);
2259         if (!ok) {
2260                 return NT_STATUS_INTERNAL_ERROR;
2261         }
2262
2263         init_strict_lock_struct(state->dst_fsp,
2264                                 state->dst_fsp->op->global->open_persistent_id,
2265                                 state->dst_off,
2266                                 state->remaining,
2267                                 WRITE_LOCK,
2268                                 &lck);
2269
2270         ok = SMB_VFS_STRICT_LOCK_CHECK(state->dst_fsp->conn,
2271                                        state->dst_fsp,
2272                                        &lck);
2273         if (!ok) {
2274                 return NT_STATUS_FILE_LOCK_CONFLICT;
2275         }
2276
2277         while (state->remaining > 0) {
2278                 nwritten = copy_file_range(fsp_get_io_fd(state->src_fsp),
2279                                            &state->src_off,
2280                                            fsp_get_io_fd(state->dst_fsp),
2281                                            &state->dst_off,
2282                                            state->remaining,
2283                                            0);
2284                 if (nwritten == -1) {
2285                         DBG_DEBUG("copy_file_range src [%s]:[%jd] dst [%s]:[%jd] "
2286                                   "n [%jd] failed: %s\n",
2287                                   fsp_str_dbg(state->src_fsp),
2288                                   (intmax_t)state->src_off,
2289                                   fsp_str_dbg(state->dst_fsp),
2290                                   (intmax_t)state->dst_off,
2291                                   (intmax_t)state->remaining,
2292                                   strerror(errno));
2293                         switch (errno) {
2294                         case EOPNOTSUPP:
2295                         case ENOSYS:
2296                                 try_copy_file_range = false;
2297                                 status = NT_STATUS_MORE_PROCESSING_REQUIRED;
2298                                 break;
2299                         case EXDEV:
2300                                 status = NT_STATUS_MORE_PROCESSING_REQUIRED;
2301                                 break;
2302                         default:
2303                                 status = map_nt_error_from_unix(errno);
2304                                 if (NT_STATUS_EQUAL(
2305                                             status,
2306                                             NT_STATUS_MORE_PROCESSING_REQUIRED))
2307                                 {
2308                                         /* Avoid triggering the fallback */
2309                                         status = NT_STATUS_INTERNAL_ERROR;
2310                                 }
2311                                 break;
2312                         }
2313                         return status;
2314                 }
2315
2316                 if (state->remaining < nwritten) {
2317                         DBG_DEBUG("copy_file_range src [%s] dst [%s] "
2318                                   "n [%jd] remaining [%jd]\n",
2319                                   fsp_str_dbg(state->src_fsp),
2320                                   fsp_str_dbg(state->dst_fsp),
2321                                   (intmax_t)nwritten,
2322                                   (intmax_t)state->remaining);
2323                         return NT_STATUS_INTERNAL_ERROR;
2324                 }
2325
2326                 if (nwritten == 0) {
2327                         break;
2328                 }
2329                 state->copied += nwritten;
2330                 state->remaining -= nwritten;
2331         }
2332
2333         /*
2334          * Tell the req cleanup function there's no need to call
2335          * change_to_user_and_service_by_fsp() on the dst handle.
2336          */
2337         state->dst_fsp = NULL;
2338         return NT_STATUS_OK;
2339 }
2340
2341 static void vfswrap_offload_write_read_done(struct tevent_req *subreq);
2342
2343 static NTSTATUS vfswrap_offload_write_loop(struct tevent_req *req)
2344 {
2345         struct vfswrap_offload_write_state *state = tevent_req_data(
2346                 req, struct vfswrap_offload_write_state);
2347         struct tevent_req *subreq = NULL;
2348         struct lock_struct read_lck;
2349         bool ok;
2350
2351         /*
2352          * This is called under the context of state->src_fsp.
2353          */
2354
2355         state->next_io_size = MIN(state->remaining, talloc_array_length(state->buf));
2356
2357         init_strict_lock_struct(state->src_fsp,
2358                                 state->src_fsp->op->global->open_persistent_id,
2359                                 state->src_off,
2360                                 state->next_io_size,
2361                                 READ_LOCK,
2362                                 &read_lck);
2363
2364         ok = SMB_VFS_STRICT_LOCK_CHECK(state->src_fsp->conn,
2365                                  state->src_fsp,
2366                                  &read_lck);
2367         if (!ok) {
2368                 return NT_STATUS_FILE_LOCK_CONFLICT;
2369         }
2370
2371         subreq = SMB_VFS_PREAD_SEND(state,
2372                                     state->src_ev,
2373                                     state->src_fsp,
2374                                     state->buf,
2375                                     state->next_io_size,
2376                                     state->src_off);
2377         if (subreq == NULL) {
2378                 return NT_STATUS_NO_MEMORY;
2379         }
2380         tevent_req_set_callback(subreq, vfswrap_offload_write_read_done, req);
2381
2382         return NT_STATUS_OK;
2383 }
2384
2385 static void vfswrap_offload_write_write_done(struct tevent_req *subreq);
2386
2387 static void vfswrap_offload_write_read_done(struct tevent_req *subreq)
2388 {
2389         struct tevent_req *req = tevent_req_callback_data(
2390                 subreq, struct tevent_req);
2391         struct vfswrap_offload_write_state *state = tevent_req_data(
2392                 req, struct vfswrap_offload_write_state);
2393         struct vfs_aio_state aio_state;
2394         struct lock_struct write_lck;
2395         ssize_t nread;
2396         bool ok;
2397
2398         nread = SMB_VFS_PREAD_RECV(subreq, &aio_state);
2399         TALLOC_FREE(subreq);
2400         if (nread == -1) {
2401                 DBG_ERR("read failed: %s\n", strerror(aio_state.error));
2402                 tevent_req_nterror(req, map_nt_error_from_unix(aio_state.error));
2403                 return;
2404         }
2405         if (nread != state->next_io_size) {
2406                 DBG_ERR("Short read, only %zd of %zu\n",
2407                         nread, state->next_io_size);
2408                 tevent_req_nterror(req, NT_STATUS_IO_DEVICE_ERROR);
2409                 return;
2410         }
2411
2412         state->src_off += nread;
2413
2414         ok = change_to_user_and_service_by_fsp(state->dst_fsp);
2415         if (!ok) {
2416                 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
2417                 return;
2418         }
2419
2420         init_strict_lock_struct(state->dst_fsp,
2421                                 state->dst_fsp->op->global->open_persistent_id,
2422                                 state->dst_off,
2423                                 state->next_io_size,
2424                                 WRITE_LOCK,
2425                                 &write_lck);
2426
2427         ok = SMB_VFS_STRICT_LOCK_CHECK(state->dst_fsp->conn,
2428                                  state->dst_fsp,
2429                                  &write_lck);
2430         if (!ok) {
2431                 tevent_req_nterror(req, NT_STATUS_FILE_LOCK_CONFLICT);
2432                 return;
2433         }
2434
2435         subreq = SMB_VFS_PWRITE_SEND(state,
2436                                      state->dst_ev,
2437                                      state->dst_fsp,
2438                                      state->buf,
2439                                      state->next_io_size,
2440                                      state->dst_off);
2441         if (subreq == NULL) {
2442                 tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
2443                 return;
2444         }
2445         tevent_req_set_callback(subreq, vfswrap_offload_write_write_done, req);
2446 }
2447
2448 static void vfswrap_offload_write_write_done(struct tevent_req *subreq)
2449 {
2450         struct tevent_req *req = tevent_req_callback_data(
2451                 subreq, struct tevent_req);
2452         struct vfswrap_offload_write_state *state = tevent_req_data(
2453                 req, struct vfswrap_offload_write_state);
2454         struct vfs_aio_state aio_state;
2455         ssize_t nwritten;
2456         NTSTATUS status;
2457         bool ok;
2458
2459         nwritten = SMB_VFS_PWRITE_RECV(subreq, &aio_state);
2460         TALLOC_FREE(subreq);
2461         if (nwritten == -1) {
2462                 DBG_ERR("write failed: %s\n", strerror(aio_state.error));
2463                 tevent_req_nterror(req, map_nt_error_from_unix(aio_state.error));
2464                 return;
2465         }
2466         if (nwritten != state->next_io_size) {
2467                 DBG_ERR("Short write, only %zd of %zu\n", nwritten, state->next_io_size);
2468                 tevent_req_nterror(req, NT_STATUS_IO_DEVICE_ERROR);
2469                 return;
2470         }
2471
2472         state->dst_off += nwritten;
2473
2474         if (state->remaining < nwritten) {
2475                 /* Paranoia check */
2476                 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
2477                 return;
2478         }
2479         state->copied += nwritten;
2480         state->remaining -= nwritten;
2481         if (state->remaining == 0) {
2482                 tevent_req_done(req);
2483                 return;
2484         }
2485
2486         ok = change_to_user_and_service_by_fsp(state->src_fsp);
2487         if (!ok) {
2488                 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
2489                 return;
2490         }
2491
2492         status = vfswrap_offload_write_loop(req);
2493         if (!NT_STATUS_IS_OK(status)) {
2494                 tevent_req_nterror(req, status);
2495                 return;
2496         }
2497
2498         return;
2499 }
2500
2501 static NTSTATUS vfswrap_offload_write_recv(struct vfs_handle_struct *handle,
2502                                         struct tevent_req *req,
2503                                         off_t *copied)
2504 {
2505         struct vfswrap_offload_write_state *state = tevent_req_data(
2506                 req, struct vfswrap_offload_write_state);
2507         NTSTATUS status;
2508
2509         if (tevent_req_is_nterror(req, &status)) {
2510                 DBG_DEBUG("copy chunk failed: %s\n", nt_errstr(status));
2511                 *copied = 0;
2512                 tevent_req_received(req);
2513                 return status;
2514         }
2515
2516         *copied = state->copied;
2517         DBG_DEBUG("copy chunk copied %lu\n", (unsigned long)*copied);
2518         tevent_req_received(req);
2519
2520         return NT_STATUS_OK;
2521 }
2522
2523 static NTSTATUS vfswrap_fget_compression(struct vfs_handle_struct *handle,
2524                                         TALLOC_CTX *mem_ctx,
2525                                         struct files_struct *fsp,
2526                                         uint16_t *_compression_fmt)
2527 {
2528         return NT_STATUS_INVALID_DEVICE_REQUEST;
2529 }
2530
2531 static NTSTATUS vfswrap_set_compression(struct vfs_handle_struct *handle,
2532                                         TALLOC_CTX *mem_ctx,
2533                                         struct files_struct *fsp,
2534                                         uint16_t compression_fmt)
2535 {
2536         return NT_STATUS_INVALID_DEVICE_REQUEST;
2537 }
2538
2539 /********************************************************************
2540  Given a stat buffer return the allocated size on disk, taking into
2541  account sparse files.
2542 ********************************************************************/
2543 static uint64_t vfswrap_get_alloc_size(vfs_handle_struct *handle,
2544                                        struct files_struct *fsp,
2545                                        const SMB_STRUCT_STAT *sbuf)
2546 {
2547         uint64_t result;
2548
2549         START_PROFILE(syscall_get_alloc_size);
2550
2551         if(S_ISDIR(sbuf->st_ex_mode)) {
2552                 result = 0;
2553                 goto out;
2554         }
2555
2556 #if defined(HAVE_STAT_ST_BLOCKS) && defined(STAT_ST_BLOCKSIZE)
2557         /* The type of st_blocksize is blkcnt_t which *MUST* be
2558            signed (according to POSIX) and can be less than 64-bits.
2559            Ensure when we're converting to 64 bits wide we don't
2560            sign extend. */
2561 #if defined(SIZEOF_BLKCNT_T_8)
2562         result = (uint64_t)STAT_ST_BLOCKSIZE * (uint64_t)sbuf->st_ex_blocks;
2563 #elif defined(SIZEOF_BLKCNT_T_4)
2564         {
2565                 uint64_t bs = ((uint64_t)sbuf->st_ex_blocks) & 0xFFFFFFFFLL;
2566                 result = (uint64_t)STAT_ST_BLOCKSIZE * bs;
2567         }
2568 #else
2569 #error SIZEOF_BLKCNT_T_NOT_A_SUPPORTED_VALUE
2570 #endif
2571         if (result == 0) {
2572                 /*
2573                  * Some file systems do not allocate a block for very
2574                  * small files. But for non-empty file should report a
2575                  * positive size.
2576                  */
2577
2578                 uint64_t filesize = get_file_size_stat(sbuf);
2579                 if (filesize > 0) {
2580                         result = MIN((uint64_t)STAT_ST_BLOCKSIZE, filesize);
2581                 }
2582         }
2583 #else
2584         result = get_file_size_stat(sbuf);
2585 #endif
2586
2587         if (fsp && fsp->initial_allocation_size)
2588                 result = MAX(result,fsp->initial_allocation_size);
2589
2590         result = smb_roundup(handle->conn, result);
2591
2592  out:
2593         END_PROFILE(syscall_get_alloc_size);
2594         return result;
2595 }
2596
2597 static int vfswrap_unlinkat(vfs_handle_struct *handle,
2598                         struct files_struct *dirfsp,
2599                         const struct smb_filename *smb_fname,
2600                         int flags)
2601 {
2602         int result = -1;
2603
2604         START_PROFILE(syscall_unlinkat);
2605
2606         if (is_named_stream(smb_fname)) {
2607                 errno = ENOENT;
2608                 goto out;
2609         }
2610         result = unlinkat(fsp_get_pathref_fd(dirfsp),
2611                         smb_fname->base_name,
2612                         flags);
2613
2614  out:
2615         END_PROFILE(syscall_unlinkat);
2616         return result;
2617 }
2618
2619 static int vfswrap_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
2620 {
2621         int result;
2622
2623         START_PROFILE(syscall_fchmod);
2624
2625         if (!fsp->fsp_flags.is_pathref) {
2626                 result = fchmod(fsp_get_io_fd(fsp), mode);
2627                 END_PROFILE(syscall_fchmod);
2628                 return result;
2629         }
2630
2631         if (fsp->fsp_flags.have_proc_fds) {
2632                 int fd = fsp_get_pathref_fd(fsp);
2633                 const char *p = NULL;
2634                 char buf[PATH_MAX];
2635
2636                 p = sys_proc_fd_path(fd, buf, sizeof(buf));
2637                 if (p != NULL) {
2638                         result = chmod(p, mode);
2639                 } else {
2640                         result = -1;
2641                 }
2642                 END_PROFILE(syscall_fchmod);
2643                 return result;
2644         }
2645
2646         /*
2647          * This is no longer a handle based call.
2648          */
2649         result = chmod(fsp->fsp_name->base_name, mode);
2650
2651         END_PROFILE(syscall_fchmod);
2652         return result;
2653 }
2654
2655 static int vfswrap_fchown(vfs_handle_struct *handle, files_struct *fsp, uid_t uid, gid_t gid)
2656 {
2657 #ifdef HAVE_FCHOWN
2658         int result;
2659
2660         START_PROFILE(syscall_fchown);
2661         if (!fsp->fsp_flags.is_pathref) {
2662                 result = fchown(fsp_get_io_fd(fsp), uid, gid);
2663                 END_PROFILE(syscall_fchown);
2664                 return result;
2665         }
2666
2667         if (fsp->fsp_flags.have_proc_fds) {
2668                 int fd = fsp_get_pathref_fd(fsp);
2669                 const char *p = NULL;
2670                 char buf[PATH_MAX];
2671
2672                 p = sys_proc_fd_path(fd, buf, sizeof(buf));
2673                 if (p != NULL) {
2674                         result = chown(p, uid, gid);
2675                 } else {
2676                         result = -1;
2677                 }
2678                 END_PROFILE(syscall_fchown);
2679                 return result;
2680         }
2681
2682         /*
2683          * This is no longer a handle based call.
2684          */
2685         result = chown(fsp->fsp_name->base_name, uid, gid);
2686         END_PROFILE(syscall_fchown);
2687         return result;
2688 #else
2689         errno = ENOSYS;
2690         return -1;
2691 #endif
2692 }
2693
2694 static int vfswrap_lchown(vfs_handle_struct *handle,
2695                         const struct smb_filename *smb_fname,
2696                         uid_t uid,
2697                         gid_t gid)
2698 {
2699         int result;
2700
2701         START_PROFILE(syscall_lchown);
2702         result = lchown(smb_fname->base_name, uid, gid);
2703         END_PROFILE(syscall_lchown);
2704         return result;
2705 }
2706
2707 static int vfswrap_chdir(vfs_handle_struct *handle,
2708                         const struct smb_filename *smb_fname)
2709 {
2710         int result;
2711
2712         START_PROFILE(syscall_chdir);
2713         result = chdir(smb_fname->base_name);
2714         END_PROFILE(syscall_chdir);
2715         return result;
2716 }
2717
2718 static struct smb_filename *vfswrap_getwd(vfs_handle_struct *handle,
2719                                 TALLOC_CTX *ctx)
2720 {
2721         char *result;
2722         struct smb_filename *smb_fname = NULL;
2723
2724         START_PROFILE(syscall_getwd);
2725         result = sys_getwd();
2726         END_PROFILE(syscall_getwd);
2727
2728         if (result == NULL) {
2729                 return NULL;
2730         }
2731         smb_fname = synthetic_smb_fname(ctx,
2732                                 result,
2733                                 NULL,
2734                                 NULL,
2735                                 0,
2736                                 0);
2737         /*
2738          * sys_getwd() *always* returns malloced memory.
2739          * We must free here to avoid leaks:
2740          * BUG:https://bugzilla.samba.org/show_bug.cgi?id=13372
2741          */
2742         SAFE_FREE(result);
2743         return smb_fname;
2744 }
2745
2746 /*********************************************************************
2747  nsec timestamp resolution call. Convert down to whatever the underlying
2748  system will support.
2749 **********************************************************************/
2750
2751 static int vfswrap_fntimes(vfs_handle_struct *handle,
2752                            files_struct *fsp,
2753                            struct smb_file_time *ft)
2754 {
2755         int result = -1;
2756         struct timespec ts[2];
2757         struct timespec *times = NULL;
2758
2759         START_PROFILE(syscall_fntimes);
2760
2761         if (is_named_stream(fsp->fsp_name)) {
2762                 errno = ENOENT;
2763                 goto out;
2764         }
2765
2766         if (ft != NULL) {
2767                 if (is_omit_timespec(&ft->atime)) {
2768                         ft->atime = fsp->fsp_name->st.st_ex_atime;
2769                 }
2770
2771                 if (is_omit_timespec(&ft->mtime)) {
2772                         ft->mtime = fsp->fsp_name->st.st_ex_mtime;
2773                 }
2774
2775                 if (!is_omit_timespec(&ft->create_time)) {
2776                         set_create_timespec_ea(fsp,
2777                                                ft->create_time);
2778                 }
2779
2780                 if ((timespec_compare(&ft->atime,
2781                                       &fsp->fsp_name->st.st_ex_atime) == 0) &&
2782                     (timespec_compare(&ft->mtime,
2783                                       &fsp->fsp_name->st.st_ex_mtime) == 0)) {
2784                         result = 0;
2785                         goto out;
2786                 }
2787
2788                 ts[0] = ft->atime;
2789                 ts[1] = ft->mtime;
2790                 times = ts;
2791         } else {
2792                 times = NULL;
2793         }
2794
2795         if (!fsp->fsp_flags.is_pathref) {
2796                 result = futimens(fsp_get_io_fd(fsp), times);
2797                 goto out;
2798         }
2799
2800         if (fsp->fsp_flags.have_proc_fds) {
2801                 int fd = fsp_get_pathref_fd(fsp);
2802                 const char *p = NULL;
2803                 char buf[PATH_MAX];
2804
2805                 p = sys_proc_fd_path(fd, buf, sizeof(buf));
2806                 if (p != NULL) {
2807                         /*
2808                          * The dirfd argument of utimensat is ignored when
2809                          * pathname is an absolute path
2810                          */
2811                         result = utimensat(AT_FDCWD, p, times, 0);
2812                 } else {
2813                         result = -1;
2814                 }
2815
2816                 goto out;
2817         }
2818
2819         /*
2820          * The fd is a pathref (opened with O_PATH) and there isn't fd to
2821          * path translation mechanism. Fallback to path based call.
2822          */
2823         result = utimensat(AT_FDCWD, fsp->fsp_name->base_name, times, 0);
2824
2825 out:
2826         END_PROFILE(syscall_fntimes);
2827
2828         return result;
2829 }
2830
2831
2832 /*********************************************************************
2833  A version of ftruncate that will write the space on disk if strict
2834  allocate is set.
2835 **********************************************************************/
2836
2837 static int strict_allocate_ftruncate(vfs_handle_struct *handle, files_struct *fsp, off_t len)
2838 {
2839         off_t space_to_write;
2840         uint64_t space_avail;
2841         uint64_t bsize,dfree,dsize;
2842         int ret;
2843         NTSTATUS status;
2844         SMB_STRUCT_STAT *pst;
2845         bool ok;
2846
2847         ok = vfs_valid_pwrite_range(len, 0);
2848         if (!ok) {
2849                 errno = EINVAL;
2850                 return -1;
2851         }
2852
2853         status = vfs_stat_fsp(fsp);
2854         if (!NT_STATUS_IS_OK(status)) {
2855                 return -1;
2856         }
2857         pst = &fsp->fsp_name->st;
2858
2859 #ifdef S_ISFIFO
2860         if (S_ISFIFO(pst->st_ex_mode))
2861                 return 0;
2862 #endif
2863
2864         if (pst->st_ex_size == len)
2865                 return 0;
2866
2867         /* Shrink - just ftruncate. */
2868         if (pst->st_ex_size > len)
2869                 return ftruncate(fsp_get_io_fd(fsp), len);
2870
2871         space_to_write = len - pst->st_ex_size;
2872
2873         /* for allocation try fallocate first. This can fail on some
2874            platforms e.g. when the filesystem doesn't support it and no
2875            emulation is being done by the libc (like on AIX with JFS1). In that
2876            case we do our own emulation. fallocate implementations can
2877            return ENOTSUP or EINVAL in cases like that. */
2878         ret = SMB_VFS_FALLOCATE(fsp, 0, pst->st_ex_size, space_to_write);
2879         if (ret == -1 && errno == ENOSPC) {
2880                 return -1;
2881         }
2882         if (ret == 0) {
2883                 return 0;
2884         }
2885         DEBUG(10,("strict_allocate_ftruncate: SMB_VFS_FALLOCATE failed with "
2886                 "error %d. Falling back to slow manual allocation\n", errno));
2887
2888         /* available disk space is enough or not? */
2889         space_avail =
2890             get_dfree_info(fsp->conn, fsp->fsp_name, &bsize, &dfree, &dsize);
2891         /* space_avail is 1k blocks */
2892         if (space_avail == (uint64_t)-1 ||
2893                         ((uint64_t)space_to_write/1024 > space_avail) ) {
2894                 errno = ENOSPC;
2895                 return -1;
2896         }
2897
2898         /* Write out the real space on disk. */
2899         ret = vfs_slow_fallocate(fsp, pst->st_ex_size, space_to_write);
2900         if (ret != 0) {
2901                 return -1;
2902         }
2903
2904         return 0;
2905 }
2906
2907 static int vfswrap_ftruncate(vfs_handle_struct *handle, files_struct *fsp, off_t len)
2908 {
2909         int result = -1;
2910         SMB_STRUCT_STAT *pst;
2911         NTSTATUS status;
2912         char c = 0;
2913
2914         START_PROFILE(syscall_ftruncate);
2915
2916         if (lp_strict_allocate(SNUM(fsp->conn)) && !fsp->fsp_flags.is_sparse) {
2917                 result = strict_allocate_ftruncate(handle, fsp, len);
2918                 END_PROFILE(syscall_ftruncate);
2919                 return result;
2920         }
2921
2922         /* we used to just check HAVE_FTRUNCATE_EXTEND and only use
2923            ftruncate if the system supports it. Then I discovered that
2924            you can have some filesystems that support ftruncate
2925            expansion and some that don't! On Linux fat can't do
2926            ftruncate extend but ext2 can. */
2927
2928         result = ftruncate(fsp_get_io_fd(fsp), len);
2929
2930         /* According to W. R. Stevens advanced UNIX prog. Pure 4.3 BSD cannot
2931            extend a file with ftruncate. Provide alternate implementation
2932            for this */
2933
2934         /* Do an fstat to see if the file is longer than the requested
2935            size in which case the ftruncate above should have
2936            succeeded or shorter, in which case seek to len - 1 and
2937            write 1 byte of zero */
2938         status = vfs_stat_fsp(fsp);
2939         if (!NT_STATUS_IS_OK(status)) {
2940                 goto done;
2941         }
2942
2943         /* We need to update the files_struct after successful ftruncate */
2944         if (result == 0) {
2945                 goto done;
2946         }
2947
2948         pst = &fsp->fsp_name->st;
2949
2950 #ifdef S_ISFIFO
2951         if (S_ISFIFO(pst->st_ex_mode)) {
2952                 result = 0;
2953                 goto done;
2954         }
2955 #endif
2956
2957         if (pst->st_ex_size == len) {
2958                 result = 0;
2959                 goto done;
2960         }
2961
2962         if (pst->st_ex_size > len) {
2963                 /* the ftruncate should have worked */
2964                 goto done;
2965         }
2966
2967         if (SMB_VFS_PWRITE(fsp, &c, 1, len-1)!=1) {
2968                 goto done;
2969         }
2970
2971         result = 0;
2972
2973   done:
2974
2975         END_PROFILE(syscall_ftruncate);
2976         return result;
2977 }
2978
2979 static int vfswrap_fallocate(vfs_handle_struct *handle,
2980                         files_struct *fsp,
2981                         uint32_t mode,
2982                         off_t offset,
2983                         off_t len)
2984 {
2985         int result;
2986
2987         START_PROFILE(syscall_fallocate);
2988         if (mode == 0) {
2989                 result = sys_posix_fallocate(fsp_get_io_fd(fsp), offset, len);
2990                 /*
2991                  * posix_fallocate returns 0 on success, errno on error
2992                  * and doesn't set errno. Make it behave like fallocate()
2993                  * which returns -1, and sets errno on failure.
2994                  */
2995                 if (result != 0) {
2996                         errno = result;
2997                         result = -1;
2998                 }
2999         } else {
3000                 /* sys_fallocate handles filtering of unsupported mode flags */
3001                 result = sys_fallocate(fsp_get_io_fd(fsp), mode, offset, len);
3002         }
3003         END_PROFILE(syscall_fallocate);
3004         return result;
3005 }
3006
3007 static bool vfswrap_lock(vfs_handle_struct *handle, files_struct *fsp, int op, off_t offset, off_t count, int type)
3008 {
3009         bool result;
3010
3011         START_PROFILE(syscall_fcntl_lock);
3012
3013         if (fsp->fsp_flags.use_ofd_locks) {
3014                 op = map_process_lock_to_ofd_lock(op);
3015         }
3016
3017         result =  fcntl_lock(fsp_get_io_fd(fsp), op, offset, count, type);
3018         END_PROFILE(syscall_fcntl_lock);
3019         return result;
3020 }
3021
3022 static int vfswrap_filesystem_sharemode(vfs_handle_struct *handle,
3023                                         files_struct *fsp,
3024                                         uint32_t share_access,
3025                                         uint32_t access_mask)
3026 {
3027         errno = ENOTSUP;
3028         return -1;
3029 }
3030
3031 static int vfswrap_fcntl(vfs_handle_struct *handle, files_struct *fsp, int cmd,
3032                          va_list cmd_arg)
3033 {
3034         void *argp;
3035         va_list dup_cmd_arg;
3036         int result;
3037         int val;
3038
3039         START_PROFILE(syscall_fcntl);
3040
3041         va_copy(dup_cmd_arg, cmd_arg);
3042
3043         switch(cmd) {
3044         case F_SETLK:
3045         case F_SETLKW:
3046         case F_GETLK:
3047 #if defined(HAVE_OFD_LOCKS)
3048         case F_OFD_SETLK:
3049         case F_OFD_SETLKW:
3050         case F_OFD_GETLK:
3051 #endif
3052 #if defined(HAVE_F_OWNER_EX)
3053         case F_GETOWN_EX:
3054         case F_SETOWN_EX:
3055 #endif
3056 #if defined(HAVE_RW_HINTS)
3057         case F_GET_RW_HINT:
3058         case F_SET_RW_HINT:
3059         case F_GET_FILE_RW_HINT:
3060         case F_SET_FILE_RW_HINT:
3061 #endif
3062                 argp = va_arg(dup_cmd_arg, void *);
3063                 result = sys_fcntl_ptr(fsp_get_io_fd(fsp), cmd, argp);
3064                 break;
3065         default:
3066                 val = va_arg(dup_cmd_arg, int);
3067                 result = sys_fcntl_int(fsp_get_io_fd(fsp), cmd, val);
3068         }
3069
3070         va_end(dup_cmd_arg);
3071
3072         END_PROFILE(syscall_fcntl);
3073         return result;
3074 }
3075
3076 static bool vfswrap_getlock(vfs_handle_struct *handle, files_struct *fsp, off_t *poffset, off_t *pcount, int *ptype, pid_t *ppid)
3077 {
3078         bool result;
3079         int op = F_GETLK;
3080
3081         START_PROFILE(syscall_fcntl_getlock);
3082
3083         if (fsp->fsp_flags.use_ofd_locks) {
3084                 op = map_process_lock_to_ofd_lock(op);
3085         }
3086
3087         result = fcntl_getlock(fsp_get_io_fd(fsp), op, poffset, pcount, ptype, ppid);
3088         END_PROFILE(syscall_fcntl_getlock);
3089         return result;
3090 }
3091
3092 static int vfswrap_linux_setlease(vfs_handle_struct *handle, files_struct *fsp,
3093                                 int leasetype)
3094 {
3095         int result = -1;
3096
3097         START_PROFILE(syscall_linux_setlease);
3098
3099 #ifdef HAVE_KERNEL_OPLOCKS_LINUX
3100         result = linux_setlease(fsp_get_io_fd(fsp), leasetype);
3101 #else
3102         errno = ENOSYS;
3103 #endif
3104         END_PROFILE(syscall_linux_setlease);
3105         return result;
3106 }
3107
3108 static int vfswrap_symlinkat(vfs_handle_struct *handle,
3109                         const struct smb_filename *link_target,
3110                         struct files_struct *dirfsp,
3111                         const struct smb_filename *new_smb_fname)
3112 {
3113         int result;
3114
3115         START_PROFILE(syscall_symlinkat);
3116
3117         result = symlinkat(link_target->base_name,
3118                         fsp_get_pathref_fd(dirfsp),
3119                         new_smb_fname->base_name);
3120         END_PROFILE(syscall_symlinkat);
3121         return result;
3122 }
3123
3124 static int vfswrap_readlinkat(vfs_handle_struct *handle,
3125                         const struct files_struct *dirfsp,
3126                         const struct smb_filename *smb_fname,
3127                         char *buf,
3128                         size_t bufsiz)
3129 {
3130         int result;
3131
3132         START_PROFILE(syscall_readlinkat);
3133
3134         result = readlinkat(fsp_get_pathref_fd(dirfsp),
3135                         smb_fname->base_name,
3136                         buf,
3137                         bufsiz);
3138
3139         END_PROFILE(syscall_readlinkat);
3140         return result;
3141 }
3142
3143 static int vfswrap_linkat(vfs_handle_struct *handle,
3144                         files_struct *srcfsp,
3145                         const struct smb_filename *old_smb_fname,
3146                         files_struct *dstfsp,
3147                         const struct smb_filename *new_smb_fname,
3148                         int flags)
3149 {
3150         int result;
3151
3152         START_PROFILE(syscall_linkat);
3153
3154         result = linkat(fsp_get_pathref_fd(srcfsp),
3155                         old_smb_fname->base_name,
3156                         fsp_get_pathref_fd(dstfsp),
3157                         new_smb_fname->base_name,
3158                         flags);
3159
3160         END_PROFILE(syscall_linkat);
3161         return result;
3162 }
3163
3164 static int vfswrap_mknodat(vfs_handle_struct *handle,
3165                         files_struct *dirfsp,
3166                         const struct smb_filename *smb_fname,
3167                         mode_t mode,
3168                         SMB_DEV_T dev)
3169 {
3170         int result;
3171
3172         START_PROFILE(syscall_mknodat);
3173
3174         result = sys_mknodat(fsp_get_pathref_fd(dirfsp),
3175                         smb_fname->base_name,
3176                         mode,
3177                         dev);
3178
3179         END_PROFILE(syscall_mknodat);
3180         return result;
3181 }
3182
3183 static struct smb_filename *vfswrap_realpath(vfs_handle_struct *handle,
3184                         TALLOC_CTX *ctx,
3185                         const struct smb_filename *smb_fname)
3186 {
3187         char *result;
3188         struct smb_filename *result_fname = NULL;
3189
3190         START_PROFILE(syscall_realpath);
3191         result = sys_realpath(smb_fname->base_name);
3192         END_PROFILE(syscall_realpath);
3193         if (result) {
3194                 result_fname = synthetic_smb_fname(ctx,
3195                                                    result,
3196                                                    NULL,
3197                                                    NULL,
3198                                                    0,
3199                                                    0);
3200                 SAFE_FREE(result);
3201         }
3202         return result_fname;
3203 }
3204
3205 static int vfswrap_fchflags(vfs_handle_struct *handle,
3206                         struct files_struct *fsp,
3207                         unsigned int flags)
3208 {
3209 #ifdef HAVE_FCHFLAGS
3210         int fd = fsp_get_pathref_fd(fsp);
3211
3212         if (!fsp->fsp_flags.is_pathref) {
3213                 return fchflags(fd, flags);
3214         }
3215
3216         if (fsp->fsp_flags.have_proc_fds) {
3217                 const char *p = NULL;
3218                 char buf[PATH_MAX];
3219
3220                 p = sys_proc_fd_path(fd, buf, sizeof(buf));
3221                 if (p == NULL) {
3222                         return -1;
3223                 }
3224
3225                 return chflags(p, flags);
3226         }
3227
3228         /*
3229          * This is no longer a handle based call.
3230          */
3231         return chflags(fsp->fsp_name->base_name, flags);
3232 #else
3233         errno = ENOSYS;
3234         return -1;
3235 #endif
3236 }
3237
3238 static struct file_id vfswrap_file_id_create(struct vfs_handle_struct *handle,
3239                                              const SMB_STRUCT_STAT *sbuf)
3240 {
3241         struct file_id key;
3242
3243         /* the ZERO_STRUCT ensures padding doesn't break using the key as a
3244          * blob */
3245         ZERO_STRUCT(key);
3246
3247         key.devid = sbuf->st_ex_dev;
3248         key.inode = sbuf->st_ex_ino;
3249         /* key.extid is unused by default. */
3250
3251         return key;
3252 }
3253
3254 static uint64_t vfswrap_fs_file_id(struct vfs_handle_struct *handle,
3255                                    const SMB_STRUCT_STAT *psbuf)
3256 {
3257         uint64_t file_id;
3258
3259         if (!(psbuf->st_ex_iflags & ST_EX_IFLAG_CALCULATED_FILE_ID)) {
3260                 return psbuf->st_ex_file_id;
3261         }
3262
3263         if (handle->conn->base_share_dev == psbuf->st_ex_dev) {
3264                 return (uint64_t)psbuf->st_ex_ino;
3265         }
3266
3267         /* FileIDLow */
3268         file_id = ((psbuf->st_ex_ino) & UINT32_MAX);
3269
3270         /* FileIDHigh */
3271         file_id |= ((uint64_t)((psbuf->st_ex_dev) & UINT32_MAX)) << 32;
3272
3273         return file_id;
3274 }
3275
3276 static NTSTATUS vfswrap_fstreaminfo(vfs_handle_struct *handle,
3277                                    struct files_struct *fsp,
3278                                    TALLOC_CTX *mem_ctx,
3279                                    unsigned int *pnum_streams,
3280                                    struct stream_struct **pstreams)
3281 {
3282         struct stream_struct *tmp_streams = NULL;
3283         unsigned int num_streams = *pnum_streams;
3284         struct stream_struct *streams = *pstreams;
3285         NTSTATUS status;
3286
3287         if (fsp->fsp_flags.is_directory) {
3288                 /*
3289                  * No default streams on directories
3290                  */
3291                 goto done;
3292         }
3293         status = vfs_stat_fsp(fsp);
3294         if (!NT_STATUS_IS_OK(status)) {
3295                 return status;
3296         }
3297
3298         if (num_streams + 1 < 1) {
3299                 /* Integer wrap. */
3300                 return NT_STATUS_INVALID_PARAMETER;
3301         }
3302
3303         tmp_streams = talloc_realloc(mem_ctx,
3304                                         streams,
3305                                         struct stream_struct,
3306                                         num_streams + 1);
3307         if (tmp_streams == NULL) {
3308                 return NT_STATUS_NO_MEMORY;
3309         }
3310         tmp_streams[num_streams].name = talloc_strdup(tmp_streams, "::$DATA");
3311         if (tmp_streams[num_streams].name == NULL) {
3312                 return NT_STATUS_NO_MEMORY;
3313         }
3314         tmp_streams[num_streams].size = fsp->fsp_name->st.st_ex_size;
3315         tmp_streams[num_streams].alloc_size = SMB_VFS_GET_ALLOC_SIZE(
3316                                                 handle->conn,
3317                                                 fsp,
3318                                                 &fsp->fsp_name->st);
3319         num_streams += 1;
3320
3321         *pnum_streams = num_streams;
3322         *pstreams = tmp_streams;
3323  done:
3324         return NT_STATUS_OK;
3325 }
3326
3327 static int vfswrap_get_real_filename(struct vfs_handle_struct *handle,
3328                                      const struct smb_filename *path,
3329                                      const char *name,
3330                                      TALLOC_CTX *mem_ctx,
3331                                      char **found_name)
3332 {
3333         /*
3334          * Don't fall back to get_real_filename so callers can differentiate
3335          * between a full directory scan and an actual case-insensitive stat.
3336          */
3337         errno = EOPNOTSUPP;
3338         return -1;
3339 }
3340
3341 static const char *vfswrap_connectpath(struct vfs_handle_struct *handle,
3342                                    const struct smb_filename *smb_fname)
3343 {
3344         return handle->conn->connectpath;
3345 }
3346
3347 static NTSTATUS vfswrap_brl_lock_windows(struct vfs_handle_struct *handle,
3348                                          struct byte_range_lock *br_lck,
3349                                          struct lock_struct *plock)
3350 {
3351         SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
3352
3353         /* Note: blr is not used in the default implementation. */
3354         return brl_lock_windows_default(br_lck, plock);
3355 }
3356
3357 static bool vfswrap_brl_unlock_windows(struct vfs_handle_struct *handle,
3358                                        struct byte_range_lock *br_lck,
3359                                        const struct lock_struct *plock)
3360 {
3361         SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
3362
3363         return brl_unlock_windows_default(br_lck, plock);
3364 }
3365
3366 static bool vfswrap_strict_lock_check(struct vfs_handle_struct *handle,
3367                                       files_struct *fsp,
3368                                       struct lock_struct *plock)
3369 {
3370         SMB_ASSERT(plock->lock_type == READ_LOCK ||
3371             plock->lock_type == WRITE_LOCK);
3372
3373         return strict_lock_check_default(fsp, plock);
3374 }
3375
3376 /* NT ACL operations. */
3377
3378 static NTSTATUS vfswrap_fget_nt_acl(vfs_handle_struct *handle,
3379                                     files_struct *fsp,
3380                                     uint32_t security_info,
3381                                     TALLOC_CTX *mem_ctx,
3382                                     struct security_descriptor **ppdesc)
3383 {
3384         NTSTATUS result;
3385
3386         START_PROFILE(fget_nt_acl);
3387         result = posix_fget_nt_acl(fsp, security_info,
3388                                    mem_ctx, ppdesc);
3389         END_PROFILE(fget_nt_acl);
3390         return result;
3391 }
3392
3393 static NTSTATUS vfswrap_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32_t security_info_sent, const struct security_descriptor *psd)
3394 {
3395         NTSTATUS result;
3396
3397         START_PROFILE(fset_nt_acl);
3398         result = set_nt_acl(fsp, security_info_sent, psd);
3399         END_PROFILE(fset_nt_acl);
3400         return result;
3401 }
3402
3403 static NTSTATUS vfswrap_audit_file(struct vfs_handle_struct *handle,
3404                                    struct smb_filename *file,
3405                                    struct security_acl *sacl,
3406                                    uint32_t access_requested,
3407                                    uint32_t access_denied)
3408 {
3409         return NT_STATUS_OK; /* Nothing to do here ... */
3410 }
3411
3412 static SMB_ACL_T vfswrap_sys_acl_get_fd(vfs_handle_struct *handle,
3413                                         files_struct *fsp,
3414                                         SMB_ACL_TYPE_T type,
3415                                         TALLOC_CTX *mem_ctx)
3416 {
3417         return sys_acl_get_fd(handle, fsp, type, mem_ctx);
3418 }
3419
3420 static int vfswrap_sys_acl_set_fd(vfs_handle_struct *handle,
3421                                   files_struct *fsp,
3422                                   SMB_ACL_TYPE_T type,
3423                                   SMB_ACL_T theacl)
3424 {
3425         return sys_acl_set_fd(handle, fsp, type, theacl);
3426 }
3427
3428 static int vfswrap_sys_acl_delete_def_fd(vfs_handle_struct *handle,
3429                                          files_struct *fsp)
3430 {
3431         return sys_acl_delete_def_fd(handle, fsp);
3432 }
3433
3434 /****************************************************************
3435  Extended attribute operations.
3436 *****************************************************************/
3437
3438 static ssize_t vfswrap_fgetxattr(struct vfs_handle_struct *handle,
3439                                  struct files_struct *fsp,
3440                                  const char *name,
3441                                  void *value,
3442                                  size_t size)
3443 {
3444         int fd = fsp_get_pathref_fd(fsp);
3445
3446         if (!fsp->fsp_flags.is_pathref) {
3447                 return fgetxattr(fd, name, value, size);
3448         }
3449
3450         if (fsp->fsp_flags.have_proc_fds) {
3451                 const char *p = NULL;
3452                 char buf[PATH_MAX];
3453
3454                 p = sys_proc_fd_path(fd, buf, sizeof(buf));
3455                 if (p == NULL) {
3456                         return -1;
3457                 }
3458
3459                 return getxattr(p, name, value, size);
3460         }
3461
3462         /*
3463          * This is no longer a handle based call.
3464          */
3465         return getxattr(fsp->fsp_name->base_name, name, value, size);
3466 }
3467
3468 struct vfswrap_getxattrat_state {
3469         struct tevent_context *ev;
3470         struct vfs_handle_struct *handle;
3471         files_struct *dir_fsp;
3472         const struct smb_filename *smb_fname;
3473
3474         /*
3475          * The following variables are talloced off "state" which is protected
3476          * by a destructor and thus are guaranteed to be safe to be used in the
3477          * job function in the worker thread.
3478          */
3479         char *name;
3480         const char *xattr_name;
3481         uint8_t *xattr_value;
3482         struct security_unix_token *token;
3483
3484         ssize_t xattr_size;
3485         struct vfs_aio_state vfs_aio_state;
3486         SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
3487 };
3488
3489 static int vfswrap_getxattrat_state_destructor(
3490                 struct vfswrap_getxattrat_state *state)
3491 {
3492         return -1;
3493 }
3494
3495 static void vfswrap_getxattrat_do_sync(struct tevent_req *req);
3496 static void vfswrap_getxattrat_do_async(void *private_data);
3497 static void vfswrap_getxattrat_done(struct tevent_req *subreq);
3498
3499 static struct tevent_req *vfswrap_getxattrat_send(
3500                         TALLOC_CTX *mem_ctx,
3501                         struct tevent_context *ev,
3502                         struct vfs_handle_struct *handle,
3503                         files_struct *dir_fsp,
3504                         const struct smb_filename *smb_fname,
3505                         const char *xattr_name,
3506                         size_t alloc_hint)
3507 {
3508         struct tevent_req *req = NULL;
3509         struct tevent_req *subreq = NULL;
3510         struct vfswrap_getxattrat_state *state = NULL;
3511         size_t max_threads = 0;
3512         bool have_per_thread_cwd = false;
3513         bool have_per_thread_creds = false;
3514         bool do_async = false;
3515
3516         req = tevent_req_create(mem_ctx, &state,
3517                                 struct vfswrap_getxattrat_state);
3518         if (req == NULL) {
3519                 return NULL;
3520         }
3521         *state = (struct vfswrap_getxattrat_state) {
3522                 .ev = ev,
3523                 .handle = handle,
3524                 .dir_fsp = dir_fsp,
3525                 .smb_fname = smb_fname,
3526         };
3527
3528         max_threads = pthreadpool_tevent_max_threads(dir_fsp->conn->sconn->pool);
3529         if (max_threads >= 1) {
3530                 /*
3531                  * We need a non sync threadpool!
3532                  */
3533                 have_per_thread_cwd = per_thread_cwd_supported();
3534         }
3535 #ifdef HAVE_LINUX_THREAD_CREDENTIALS
3536         have_per_thread_creds = true;
3537 #endif
3538         if (have_per_thread_cwd && have_per_thread_creds) {
3539                 do_async = true;
3540         }
3541
3542         SMBPROFILE_BYTES_ASYNC_START(syscall_asys_getxattrat, profile_p,
3543                                      state->profile_bytes, 0);
3544
3545         if (fsp_get_pathref_fd(dir_fsp) == -1) {
3546                 DBG_ERR("Need a valid directory fd\n");
3547                 tevent_req_error(req, EINVAL);
3548                 return tevent_req_post(req, ev);
3549         }
3550
3551         if (alloc_hint > 0) {
3552                 state->xattr_value = talloc_zero_array(state,
3553                                                        uint8_t,
3554                                                        alloc_hint);
3555                 if (tevent_req_nomem(state->xattr_value, req)) {
3556                         return tevent_req_post(req, ev);
3557                 }
3558         }
3559
3560         if (!do_async) {
3561                 vfswrap_getxattrat_do_sync(req);
3562                 return tevent_req_post(req, ev);
3563         }
3564
3565         /*
3566          * Now allocate all parameters from a memory context that won't go away
3567          * no matter what. These paremeters will get used in threads and we
3568          * can't reliably cancel threads, so all buffers passed to the threads
3569          * must not be freed before all referencing threads terminate.
3570          */
3571
3572         state->name = talloc_strdup(state, smb_fname->base_name);
3573         if (tevent_req_nomem(state->name, req)) {
3574                 return tevent_req_post(req, ev);
3575         }
3576
3577         state->xattr_name = talloc_strdup(state, xattr_name);
3578         if (tevent_req_nomem(state->xattr_name, req)) {
3579                 return tevent_req_post(req, ev);
3580         }
3581
3582         /*
3583          * This is a hot codepath so at first glance one might think we should
3584          * somehow optimize away the token allocation and do a
3585          * talloc_reference() or similar black magic instead. But due to the
3586          * talloc_stackframe pool per SMB2 request this should be a simple copy
3587          * without a malloc in most cases.
3588          */
3589         if (geteuid() == sec_initial_uid()) {
3590                 state->token = root_unix_token(state);
3591         } else {
3592                 state->token = copy_unix_token(
3593                                         state,
3594                                         dir_fsp->conn->session_info->unix_token);
3595         }
3596         if (tevent_req_nomem(state->token, req)) {
3597                 return tevent_req_post(req, ev);
3598         }
3599
3600         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
3601
3602         subreq = pthreadpool_tevent_job_send(
3603                         state,
3604                         ev,
3605                         dir_fsp->conn->sconn->pool,
3606                         vfswrap_getxattrat_do_async,
3607                         state);
3608         if (tevent_req_nomem(subreq, req)) {
3609                 return tevent_req_post(req, ev);
3610         }
3611         tevent_req_set_callback(subreq, vfswrap_getxattrat_done, req);
3612
3613         talloc_set_destructor(state, vfswrap_getxattrat_state_destructor);
3614
3615         return req;
3616 }
3617
3618 static void vfswrap_getxattrat_do_sync(struct tevent_req *req)
3619 {
3620         struct vfswrap_getxattrat_state *state = tevent_req_data(
3621                 req, struct vfswrap_getxattrat_state);
3622         struct files_struct *fsp = state->smb_fname->fsp;
3623
3624         if (fsp->base_fsp != NULL) {
3625                 fsp = fsp->base_fsp;
3626         }
3627
3628         state->xattr_size = vfswrap_fgetxattr(state->handle,
3629                                               fsp,
3630                                               state->xattr_name,
3631                                               state->xattr_value,
3632                                               talloc_array_length(state->xattr_value));
3633         if (state->xattr_size == -1) {
3634                 tevent_req_error(req, errno);
3635                 return;
3636         }
3637
3638         tevent_req_done(req);
3639         return;
3640 }
3641
3642 static void vfswrap_getxattrat_do_async(void *private_data)
3643 {
3644         struct vfswrap_getxattrat_state *state = talloc_get_type_abort(
3645                 private_data, struct vfswrap_getxattrat_state);
3646         struct timespec start_time;
3647         struct timespec end_time;
3648         int ret;
3649         struct files_struct *fsp = state->smb_fname->fsp;
3650
3651         if (fsp->base_fsp != NULL) {
3652                 fsp = fsp->base_fsp;
3653         }
3654
3655         PROFILE_TIMESTAMP(&start_time);
3656         SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
3657
3658         /*
3659          * Here we simulate a getxattrat()
3660          * call using fchdir();getxattr()
3661          */
3662
3663         per_thread_cwd_activate();
3664
3665         /* Become the correct credential on this thread. */
3666         ret = set_thread_credentials(state->token->uid,
3667                                      state->token->gid,
3668                                      (size_t)state->token->ngroups,
3669                                      state->token->groups);
3670         if (ret != 0) {
3671                 state->xattr_size = -1;
3672                 state->vfs_aio_state.error = errno;
3673                 goto end_profile;
3674         }
3675
3676         state->xattr_size = vfswrap_fgetxattr(state->handle,
3677                                               fsp,
3678                                               state->xattr_name,
3679                                               state->xattr_value,
3680                                               talloc_array_length(state->xattr_value));
3681         if (state->xattr_size == -1) {
3682                 state->vfs_aio_state.error = errno;
3683         }
3684
3685 end_profile:
3686         PROFILE_TIMESTAMP(&end_time);
3687         state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
3688         SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
3689 }
3690
3691 static void vfswrap_getxattrat_done(struct tevent_req *subreq)
3692 {
3693         struct tevent_req *req = tevent_req_callback_data(
3694                 subreq, struct tevent_req);
3695         struct vfswrap_getxattrat_state *state = tevent_req_data(
3696                 req, struct vfswrap_getxattrat_state);
3697         int ret;
3698         bool ok;
3699
3700         /*
3701          * Make sure we run as the user again
3702          */
3703         ok = change_to_user_and_service_by_fsp(state->dir_fsp);
3704         SMB_ASSERT(ok);
3705
3706         ret = pthreadpool_tevent_job_recv(subreq);
3707         TALLOC_FREE(subreq);
3708         SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
3709         talloc_set_destructor(state, NULL);
3710         if (ret != 0) {
3711                 if (ret != EAGAIN) {
3712                         tevent_req_error(req, ret);
3713                         return;
3714                 }
3715                 /*
3716                  * If we get EAGAIN from pthreadpool_tevent_job_recv() this
3717                  * means the lower level pthreadpool failed to create a new
3718                  * thread. Fallback to sync processing in that case to allow
3719                  * some progress for the client.
3720                  */
3721                 vfswrap_getxattrat_do_sync(req);
3722                 return;
3723         }
3724
3725         if (state->xattr_size == -1) {
3726                 tevent_req_error(req, state->vfs_aio_state.error);
3727                 return;
3728         }
3729
3730         if (state->xattr_value == NULL) {
3731                 /*
3732                  * The caller only wanted the size.
3733                  */
3734                 tevent_req_done(req);
3735                 return;
3736         }
3737
3738         /*
3739          * shrink the buffer to the returned size.
3740          * (can't fail). It means NULL if size is 0.
3741          */
3742         state->xattr_value = talloc_realloc(state,
3743                                             state->xattr_value,
3744                                             uint8_t,
3745                                             state->xattr_size);
3746
3747         tevent_req_done(req);
3748 }
3749
3750 static ssize_t vfswrap_getxattrat_recv(struct tevent_req *req,
3751                                        struct vfs_aio_state *aio_state,
3752                                        TALLOC_CTX *mem_ctx,
3753                                        uint8_t **xattr_value)
3754 {
3755         struct vfswrap_getxattrat_state *state = tevent_req_data(
3756                 req, struct vfswrap_getxattrat_state);
3757         ssize_t xattr_size;
3758
3759         if (tevent_req_is_unix_error(req, &aio_state->error)) {
3760                 tevent_req_received(req);
3761                 return -1;
3762         }
3763
3764         *aio_state = state->vfs_aio_state;
3765         xattr_size = state->xattr_size;
3766         if (xattr_value != NULL) {
3767                 *xattr_value = talloc_move(mem_ctx, &state->xattr_value);
3768         }
3769
3770         tevent_req_received(req);
3771         return xattr_size;
3772 }
3773
3774 static ssize_t vfswrap_flistxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size)
3775 {
3776         int fd = fsp_get_pathref_fd(fsp);
3777
3778         if (!fsp->fsp_flags.is_pathref) {
3779                 return flistxattr(fd, list, size);
3780         }
3781
3782         if (fsp->fsp_flags.have_proc_fds) {
3783                 const char *p = NULL;
3784                 char buf[PATH_MAX];
3785
3786                 p = sys_proc_fd_path(fd, buf, sizeof(buf));
3787                 if (p == NULL) {
3788                         return -1;
3789                 }
3790
3791                 return listxattr(p, list, size);
3792         }
3793
3794         /*
3795          * This is no longer a handle based call.
3796          */
3797         return listxattr(fsp->fsp_name->base_name, list, size);
3798 }
3799
3800 static int vfswrap_fremovexattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name)
3801 {
3802         int fd = fsp_get_pathref_fd(fsp);
3803
3804         if (!fsp->fsp_flags.is_pathref) {
3805                 return fremovexattr(fd, name);
3806         }
3807
3808         if (fsp->fsp_flags.have_proc_fds) {
3809                 const char *p = NULL;
3810                 char buf[PATH_MAX];
3811
3812                 p = sys_proc_fd_path(fd, buf, sizeof(buf));
3813                 if (p == NULL) {
3814                         return -1;
3815                 }
3816
3817                 return removexattr(p, name);
3818         }
3819
3820         /*
3821          * This is no longer a handle based call.
3822          */
3823         return removexattr(fsp->fsp_name->base_name, name);
3824 }
3825
3826 static int vfswrap_fsetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags)
3827 {
3828         int fd = fsp_get_pathref_fd(fsp);
3829
3830         if (!fsp->fsp_flags.is_pathref) {
3831                 return fsetxattr(fd, name, value, size, flags);
3832         }
3833
3834         if (fsp->fsp_flags.have_proc_fds) {
3835                 const char *p = NULL;
3836                 char buf[PATH_MAX];
3837
3838                 p = sys_proc_fd_path(fd, buf, sizeof(buf));
3839                 if (p == NULL) {
3840                         return -1;
3841                 }
3842
3843                 return setxattr(p, name, value, size, flags);
3844         }
3845
3846         /*
3847          * This is no longer a handle based call.
3848          */
3849         return setxattr(fsp->fsp_name->base_name, name, value, size, flags);
3850 }
3851
3852 static bool vfswrap_aio_force(struct vfs_handle_struct *handle, struct files_struct *fsp)
3853 {
3854         return false;
3855 }
3856
3857 static bool vfswrap_is_offline(struct connection_struct *conn,
3858                                const struct smb_filename *fname)
3859 {
3860         NTSTATUS status;
3861         char *path;
3862         bool offline = false;
3863
3864         if (ISDOT(fname->base_name) || ISDOTDOT(fname->base_name)) {
3865                 return false;
3866         }
3867
3868         if (!lp_dmapi_support(SNUM(conn)) || !dmapi_have_session()) {
3869 #if defined(ENOTSUP)
3870                 errno = ENOTSUP;
3871 #endif
3872                 return false;
3873         }
3874
3875         status = get_full_smb_filename(talloc_tos(), fname, &path);
3876         if (!NT_STATUS_IS_OK(status)) {
3877                 errno = map_errno_from_nt_status(status);
3878                 return false;
3879         }
3880
3881         offline = (dmapi_file_flags(path) & FILE_ATTRIBUTE_OFFLINE) != 0;
3882
3883         TALLOC_FREE(path);
3884
3885         return offline;
3886 }
3887
3888 static NTSTATUS vfswrap_durable_cookie(struct vfs_handle_struct *handle,
3889                                        struct files_struct *fsp,
3890                                        TALLOC_CTX *mem_ctx,
3891                                        DATA_BLOB *cookie)
3892 {
3893         return vfs_default_durable_cookie(fsp, mem_ctx, cookie);
3894 }
3895
3896 static NTSTATUS vfswrap_durable_disconnect(struct vfs_handle_struct *handle,
3897                                            struct files_struct *fsp,
3898                                            const DATA_BLOB old_cookie,
3899                                            TALLOC_CTX *mem_ctx,
3900                                            DATA_BLOB *new_cookie)
3901 {
3902         return vfs_default_durable_disconnect(fsp, old_cookie, mem_ctx,
3903                                               new_cookie);
3904 }
3905
3906 static NTSTATUS vfswrap_durable_reconnect(struct vfs_handle_struct *handle,
3907                                           struct smb_request *smb1req,
3908                                           struct smbXsrv_open *op,
3909                                           const DATA_BLOB old_cookie,
3910                                           TALLOC_CTX *mem_ctx,
3911                                           struct files_struct **fsp,
3912                                           DATA_BLOB *new_cookie)
3913 {
3914         return vfs_default_durable_reconnect(handle->conn, smb1req, op,
3915                                              old_cookie, mem_ctx,
3916                                              fsp, new_cookie);
3917 }
3918
3919 static struct vfs_fn_pointers vfs_default_fns = {
3920         /* Disk operations */
3921
3922         .connect_fn = vfswrap_connect,
3923         .disconnect_fn = vfswrap_disconnect,
3924         .disk_free_fn = vfswrap_disk_free,
3925         .get_quota_fn = vfswrap_get_quota,
3926         .set_quota_fn = vfswrap_set_quota,
3927         .get_shadow_copy_data_fn = vfswrap_get_shadow_copy_data,
3928         .statvfs_fn = vfswrap_statvfs,
3929         .fs_capabilities_fn = vfswrap_fs_capabilities,
3930         .get_dfs_referrals_fn = vfswrap_get_dfs_referrals,
3931         .create_dfs_pathat_fn = vfswrap_create_dfs_pathat,
3932         .read_dfs_pathat_fn = vfswrap_read_dfs_pathat,
3933         .snap_check_path_fn = vfswrap_snap_check_path,
3934         .snap_create_fn = vfswrap_snap_create,
3935         .snap_delete_fn = vfswrap_snap_delete,
3936
3937         /* Directory operations */
3938
3939         .fdopendir_fn = vfswrap_fdopendir,
3940         .readdir_fn = vfswrap_readdir,
3941         .freaddir_attr_fn = vfswrap_freaddir_attr,
3942         .seekdir_fn = vfswrap_seekdir,
3943         .telldir_fn = vfswrap_telldir,
3944         .rewind_dir_fn = vfswrap_rewinddir,
3945         .mkdirat_fn = vfswrap_mkdirat,
3946         .closedir_fn = vfswrap_closedir,
3947
3948         /* File operations */
3949
3950         .openat_fn = vfswrap_openat,
3951         .create_file_fn = vfswrap_create_file,
3952         .close_fn = vfswrap_close,
3953         .pread_fn = vfswrap_pread,
3954         .pread_send_fn = vfswrap_pread_send,
3955         .pread_recv_fn = vfswrap_pread_recv,
3956         .pwrite_fn = vfswrap_pwrite,
3957         .pwrite_send_fn = vfswrap_pwrite_send,
3958         .pwrite_recv_fn = vfswrap_pwrite_recv,
3959         .lseek_fn = vfswrap_lseek,
3960         .sendfile_fn = vfswrap_sendfile,
3961         .recvfile_fn = vfswrap_recvfile,
3962         .renameat_fn = vfswrap_renameat,
3963         .fsync_send_fn = vfswrap_fsync_send,
3964         .fsync_recv_fn = vfswrap_fsync_recv,
3965         .stat_fn = vfswrap_stat,
3966         .fstat_fn = vfswrap_fstat,
3967         .lstat_fn = vfswrap_lstat,
3968         .get_alloc_size_fn = vfswrap_get_alloc_size,
3969         .unlinkat_fn = vfswrap_unlinkat,
3970         .fchmod_fn = vfswrap_fchmod,
3971         .fchown_fn = vfswrap_fchown,
3972         .lchown_fn = vfswrap_lchown,
3973         .chdir_fn = vfswrap_chdir,
3974         .getwd_fn = vfswrap_getwd,
3975         .fntimes_fn = vfswrap_fntimes,
3976         .ftruncate_fn = vfswrap_ftruncate,
3977         .fallocate_fn = vfswrap_fallocate,
3978         .lock_fn = vfswrap_lock,
3979         .filesystem_sharemode_fn = vfswrap_filesystem_sharemode,
3980         .fcntl_fn = vfswrap_fcntl,
3981         .linux_setlease_fn = vfswrap_linux_setlease,
3982         .getlock_fn = vfswrap_getlock,
3983         .symlinkat_fn = vfswrap_symlinkat,
3984         .readlinkat_fn = vfswrap_readlinkat,
3985         .linkat_fn = vfswrap_linkat,
3986         .mknodat_fn = vfswrap_mknodat,
3987         .realpath_fn = vfswrap_realpath,
3988         .fchflags_fn = vfswrap_fchflags,
3989         .file_id_create_fn = vfswrap_file_id_create,
3990         .fs_file_id_fn = vfswrap_fs_file_id,
3991         .fstreaminfo_fn = vfswrap_fstreaminfo,
3992         .get_real_filename_fn = vfswrap_get_real_filename,
3993         .connectpath_fn = vfswrap_connectpath,
3994         .brl_lock_windows_fn = vfswrap_brl_lock_windows,
3995         .brl_unlock_windows_fn = vfswrap_brl_unlock_windows,
3996         .strict_lock_check_fn = vfswrap_strict_lock_check,
3997         .translate_name_fn = vfswrap_translate_name,
3998         .parent_pathname_fn = vfswrap_parent_pathname,
3999         .fsctl_fn = vfswrap_fsctl,
4000         .fset_dos_attributes_fn = vfswrap_fset_dos_attributes,
4001         .get_dos_attributes_send_fn = vfswrap_get_dos_attributes_send,
4002         .get_dos_attributes_recv_fn = vfswrap_get_dos_attributes_recv,
4003         .fget_dos_attributes_fn = vfswrap_fget_dos_attributes,
4004         .offload_read_send_fn = vfswrap_offload_read_send,
4005         .offload_read_recv_fn = vfswrap_offload_read_recv,
4006         .offload_write_send_fn = vfswrap_offload_write_send,
4007         .offload_write_recv_fn = vfswrap_offload_write_recv,
4008         .fget_compression_fn = vfswrap_fget_compression,
4009         .set_compression_fn = vfswrap_set_compression,
4010
4011         /* NT ACL operations. */
4012
4013         .fget_nt_acl_fn = vfswrap_fget_nt_acl,
4014         .fset_nt_acl_fn = vfswrap_fset_nt_acl,
4015         .audit_file_fn = vfswrap_audit_file,
4016
4017         /* POSIX ACL operations. */
4018
4019         .sys_acl_get_fd_fn = vfswrap_sys_acl_get_fd,
4020         .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
4021         .sys_acl_set_fd_fn = vfswrap_sys_acl_set_fd,
4022         .sys_acl_delete_def_fd_fn = vfswrap_sys_acl_delete_def_fd,
4023
4024         /* EA operations. */
4025         .getxattrat_send_fn = vfswrap_getxattrat_send,
4026         .getxattrat_recv_fn = vfswrap_getxattrat_recv,
4027         .fgetxattr_fn = vfswrap_fgetxattr,
4028         .flistxattr_fn = vfswrap_flistxattr,
4029         .fremovexattr_fn = vfswrap_fremovexattr,
4030         .fsetxattr_fn = vfswrap_fsetxattr,
4031
4032         /* aio operations */
4033         .aio_force_fn = vfswrap_aio_force,
4034
4035         /* durable handle operations */
4036         .durable_cookie_fn = vfswrap_durable_cookie,
4037         .durable_disconnect_fn = vfswrap_durable_disconnect,
4038         .durable_reconnect_fn = vfswrap_durable_reconnect,
4039 };
4040
4041 static_decl_vfs;
4042 NTSTATUS vfs_default_init(TALLOC_CTX *ctx)
4043 {
4044         /*
4045          * Here we need to implement every call!
4046          *
4047          * As this is the end of the vfs module chain.
4048          */
4049         smb_vfs_assert_all_fns(&vfs_default_fns, DEFAULT_VFS_MODULE_NAME);
4050         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
4051                                 DEFAULT_VFS_MODULE_NAME, &vfs_default_fns);
4052 }
4053
4054