source/smbd/close.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    file closing
   4    Copyright (C) Andrew Tridgell 1992-1998
   5    Copyright (C) Jeremy Allison 1992-2007.
   6    Copyright (C) Volker Lendecke 2005
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23
  24 extern struct current_user current_user;
  25
  26 /****************************************************************************
  27  Run a file if it is a magic script.
  28 ****************************************************************************/
  29
  30 static void check_magic(struct files_struct *fsp)
  31 {
  32         int ret;
  33         const char *magic_output = NULL;
  34         SMB_STRUCT_STAT st;
  35         int tmp_fd, outfd;
  36         TALLOC_CTX *ctx = NULL;
  37         const char *p;
  38         struct connection_struct *conn = fsp->conn;
  39
  40         if (!*lp_magicscript(SNUM(conn))) {
  41                 return;
  42         }
  43
  44         DEBUG(5,("checking magic for %s\n",fsp->fsp_name));
  45
  46         if (!(p = strrchr_m(fsp->fsp_name,'/'))) {
  47                 p = fsp->fsp_name;
  48         } else {
  49                 p++;
  50         }
  51
  52         if (!strequal(lp_magicscript(SNUM(conn)),p)) {
  53                 return;
  54         }
  55
  56         ctx = talloc_stackframe();
  57
  58         if (*lp_magicoutput(SNUM(conn))) {
  59                 magic_output = lp_magicoutput(SNUM(conn));
  60         } else {
  61                 magic_output = talloc_asprintf(ctx,
  62                                 "%s.out",
  63                                 fsp->fsp_name);
  64         }
  65         if (!magic_output) {
  66                 TALLOC_FREE(ctx);
  67                 return;
  68         }
  69
  70         /* Ensure we don't depend on user's PATH. */
  71         p = talloc_asprintf(ctx, "./%s", fsp->fsp_name);
  72         if (!p) {
  73                 TALLOC_FREE(ctx);
  74                 return;
  75         }
  76
  77         if (chmod(fsp->fsp_name,0755) == -1) {
  78                 TALLOC_FREE(ctx);
  79                 return;
  80         }
  81         ret = smbrun(p,&tmp_fd);
  82         DEBUG(3,("Invoking magic command %s gave %d\n",
  83                 p,ret));
  84
  85         unlink(fsp->fsp_name);
  86         if (ret != 0 || tmp_fd == -1) {
  87                 if (tmp_fd != -1) {
  88                         close(tmp_fd);
  89                 }
  90                 TALLOC_FREE(ctx);
  91                 return;
  92         }
  93         outfd = open(magic_output, O_CREAT|O_EXCL|O_RDWR, 0600);
  94         if (outfd == -1) {
  95                 close(tmp_fd);
  96                 TALLOC_FREE(ctx);
  97                 return;
  98         }
  99
 100         if (sys_fstat(tmp_fd,&st) == -1) {
 101                 close(tmp_fd);
 102                 close(outfd);
 103                 return;
 104         }
 105
 106         transfer_file(tmp_fd,outfd,(SMB_OFF_T)st.st_size);
 107         close(tmp_fd);
 108         close(outfd);
 109         TALLOC_FREE(ctx);
 110 }
 111
 112 /****************************************************************************
 113   Common code to close a file or a directory.
 114 ****************************************************************************/
 115
 116 static NTSTATUS close_filestruct(files_struct *fsp)
 117 {
 118         NTSTATUS status = NT_STATUS_OK;
 119
 120         if (fsp->fh->fd != -1) {
 121                 if(flush_write_cache(fsp, CLOSE_FLUSH) == -1) {
 122                         status = map_nt_error_from_unix(errno);
 123                 }
 124                 delete_write_cache(fsp);
 125         }
 126
 127         return status;
 128 }
 129
 130 /****************************************************************************
 131  If any deferred opens are waiting on this close, notify them.
 132 ****************************************************************************/
 133
 134 static void notify_deferred_opens(struct share_mode_lock *lck)
 135 {
 136         int i;
 137
 138         for (i=0; i<lck->num_share_modes; i++) {
 139                 struct share_mode_entry *e = &lck->share_modes[i];
 140
 141                 if (!is_deferred_open_entry(e)) {
 142                         continue;
 143                 }
 144
 145                 if (procid_is_me(&e->pid)) {
 146                         /*
 147                          * We need to notify ourself to retry the open.  Do
 148                          * this by finding the queued SMB record, moving it to
 149                          * the head of the queue and changing the wait time to
 150                          * zero.
 151                          */
 152                         schedule_deferred_open_smb_message(e->op_mid);
 153                 } else {
 154                         char msg[MSG_SMB_SHARE_MODE_ENTRY_SIZE];
 155
 156                         share_mode_entry_to_message(msg, e);
 157
 158                         messaging_send_buf(smbd_messaging_context(),
 159                                            e->pid, MSG_SMB_OPEN_RETRY,
 160                                            (uint8 *)msg,
 161                                            MSG_SMB_SHARE_MODE_ENTRY_SIZE);
 162                 }
 163         }
 164 }
 165
 166 /****************************************************************************
 167  Delete all streams
 168 ****************************************************************************/
 169
 170 static NTSTATUS delete_all_streams(connection_struct *conn, const char *fname)
 171 {
 172         struct stream_struct *stream_info;
 173         int i;
 174         unsigned int num_streams;
 175         TALLOC_CTX *frame = talloc_stackframe();
 176         NTSTATUS status;
 177
 178         status = SMB_VFS_STREAMINFO(conn, NULL, fname, talloc_tos(),
 179                                     &num_streams, &stream_info);
 180
 181         if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_IMPLEMENTED)) {
 182                 DEBUG(10, ("no streams around\n"));
 183                 TALLOC_FREE(frame);
 184                 return NT_STATUS_OK;
 185         }
 186
 187         if (!NT_STATUS_IS_OK(status)) {
 188                 DEBUG(10, ("SMB_VFS_STREAMINFO failed: %s\n",
 189                            nt_errstr(status)));
 190                 goto fail;
 191         }
 192
 193         DEBUG(10, ("delete_all_streams found %d streams\n",
 194                    num_streams));
 195
 196         if (num_streams == 0) {
 197                 TALLOC_FREE(frame);
 198                 return NT_STATUS_OK;
 199         }
 200
 201         for (i=0; i<num_streams; i++) {
 202                 int res;
 203                 char *streamname;
 204
 205                 if (strequal(stream_info[i].name, "::$DATA")) {
 206                         continue;
 207                 }
 208
 209                 streamname = talloc_asprintf(talloc_tos(), "%s%s", fname,
 210                                              stream_info[i].name);
 211
 212                 if (streamname == NULL) {
 213                         DEBUG(0, ("talloc_aprintf failed\n"));
 214                         status = NT_STATUS_NO_MEMORY;
 215                         goto fail;
 216                 }
 217
 218                 res = SMB_VFS_UNLINK(conn, streamname);
 219
 220                 TALLOC_FREE(streamname);
 221
 222                 if (res == -1) {
 223                         status = map_nt_error_from_unix(errno);
 224                         DEBUG(10, ("Could not delete stream %s: %s\n",
 225                                    streamname, strerror(errno)));
 226                         break;
 227                 }
 228         }
 229
 230  fail:
 231         TALLOC_FREE(frame);
 232         return status;
 233 }
 234
 235 /****************************************************************************
 236  Deal with removing a share mode on last close.
 237 ****************************************************************************/
 238
 239 static NTSTATUS close_remove_share_mode(files_struct *fsp,
 240                                         enum file_close_type close_type)
 241 {
 242         connection_struct *conn = fsp->conn;
 243         bool delete_file = false;
 244         bool changed_user = false;
 245         struct share_mode_lock *lck;
 246         SMB_STRUCT_STAT sbuf;
 247         NTSTATUS status = NT_STATUS_OK;
 248         int ret;
 249         struct file_id id;
 250
 251         /*
 252          * Lock the share entries, and determine if we should delete
 253          * on close. If so delete whilst the lock is still in effect.
 254          * This prevents race conditions with the file being created. JRA.
 255          */
 256
 257         lck = get_share_mode_lock(talloc_tos(), fsp->file_id, NULL, NULL,
 258                                   NULL);
 259
 260         if (lck == NULL) {
 261                 DEBUG(0, ("close_remove_share_mode: Could not get share mode "
 262                           "lock for file %s\n", fsp->fsp_name));
 263                 return NT_STATUS_INVALID_PARAMETER;
 264         }
 265
 266         if (fsp->write_time_forced) {
 267                 set_close_write_time(fsp, lck->changed_write_time);
 268         }
 269
 270         if (!del_share_mode(lck, fsp)) {
 271                 DEBUG(0, ("close_remove_share_mode: Could not delete share "
 272                           "entry for file %s\n", fsp->fsp_name));
 273         }
 274
 275         if (fsp->initial_delete_on_close && (lck->delete_token == NULL)) {
 276                 bool became_user = False;
 277
 278                 /* Initial delete on close was set and no one else
 279                  * wrote a real delete on close. */
 280
 281                 if (current_user.vuid != fsp->vuid) {
 282                         become_user(conn, fsp->vuid);
 283                         became_user = True;
 284                 }
 285                 set_delete_on_close_lck(lck, True, &current_user.ut);
 286                 if (became_user) {
 287                         unbecome_user();
 288                 }
 289         }
 290
 291         delete_file = lck->delete_on_close;
 292
 293         if (delete_file) {
 294                 int i;
 295                 /* See if others still have the file open. If this is the
 296                  * case, then don't delete. If all opens are POSIX delete now. */
 297                 for (i=0; i<lck->num_share_modes; i++) {
 298                         struct share_mode_entry *e = &lck->share_modes[i];
 299                         if (is_valid_share_mode_entry(e)) {
 300                                 if (fsp->posix_open && (e->flags & SHARE_MODE_FLAG_POSIX_OPEN)) {
 301                                         continue;
 302                                 }
 303                                 delete_file = False;
 304                                 break;
 305                         }
 306                 }
 307         }
 308
 309         /* Notify any deferred opens waiting on this close. */
 310         notify_deferred_opens(lck);
 311         reply_to_oplock_break_requests(fsp);
 312
 313         /*
 314          * NT can set delete_on_close of the last open
 315          * reference to a file.
 316          */
 317
 318         if (!(close_type == NORMAL_CLOSE || close_type == SHUTDOWN_CLOSE)
 319             || !delete_file
 320             || (lck->delete_token == NULL)) {
 321                 TALLOC_FREE(lck);
 322                 return NT_STATUS_OK;
 323         }
 324
 325         /*
 326          * Ok, we have to delete the file
 327          */
 328
 329         DEBUG(5,("close_remove_share_mode: file %s. Delete on close was set "
 330                  "- deleting file.\n", fsp->fsp_name));
 331
 332         /*
 333          * Don't try to update the write time when we delete the file
 334          */
 335         fsp->update_write_time_on_close = false;
 336
 337         if (!unix_token_equal(lck->delete_token, &current_user.ut)) {
 338                 /* Become the user who requested the delete. */
 339
 340                 DEBUG(5,("close_remove_share_mode: file %s. "
 341                         "Change user to uid %u\n",
 342                         fsp->fsp_name,
 343                         (unsigned int)lck->delete_token->uid));
 344
 345                 if (!push_sec_ctx()) {
 346                         smb_panic("close_remove_share_mode: file %s. failed to push "
 347                                   "sec_ctx.\n");
 348                 }
 349
 350                 set_sec_ctx(lck->delete_token->uid,
 351                             lck->delete_token->gid,
 352                             lck->delete_token->ngroups,
 353                             lck->delete_token->groups,
 354                             NULL);
 355
 356                 changed_user = true;
 357         }
 358
 359         /* We can only delete the file if the name we have is still valid and
 360            hasn't been renamed. */
 361
 362         if (fsp->posix_open) {
 363                 ret = SMB_VFS_LSTAT(conn,fsp->fsp_name,&sbuf);
 364         } else {
 365                 ret = SMB_VFS_STAT(conn,fsp->fsp_name,&sbuf);
 366         }
 367
 368         if (ret != 0) {
 369                 DEBUG(5,("close_remove_share_mode: file %s. Delete on close "
 370                          "was set and stat failed with error %s\n",
 371                          fsp->fsp_name, strerror(errno) ));
 372                 /*
 373                  * Don't save the errno here, we ignore this error
 374                  */
 375                 goto done;
 376         }
 377
 378         id = vfs_file_id_from_sbuf(conn, &sbuf);
 379
 380         if (!file_id_equal(&fsp->file_id, &id)) {
 381                 DEBUG(5,("close_remove_share_mode: file %s. Delete on close "
 382                          "was set and dev and/or inode does not match\n",
 383                          fsp->fsp_name ));
 384                 DEBUG(5,("close_remove_share_mode: file %s. stored file_id %s, "
 385                          "stat file_id %s\n",
 386                          fsp->fsp_name,
 387                          file_id_string_tos(&fsp->file_id),
 388                          file_id_string_tos(&id)));
 389                 /*
 390                  * Don't save the errno here, we ignore this error
 391                  */
 392                 goto done;
 393         }
 394
 395         if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
 396             && !is_ntfs_stream_name(fsp->fsp_name)) {
 397
 398                 status = delete_all_streams(conn, fsp->fsp_name);
 399
 400                 if (!NT_STATUS_IS_OK(status)) {
 401                         DEBUG(5, ("delete_all_streams failed: %s\n",
 402                                   nt_errstr(status)));
 403                         goto done;
 404                 }
 405         }
 406
 407
 408         if (SMB_VFS_UNLINK(conn,fsp->fsp_name) != 0) {
 409                 /*
 410                  * This call can potentially fail as another smbd may
 411                  * have had the file open with delete on close set and
 412                  * deleted it when its last reference to this file
 413                  * went away. Hence we log this but not at debug level
 414                  * zero.
 415                  */
 416
 417                 DEBUG(5,("close_remove_share_mode: file %s. Delete on close "
 418                          "was set and unlink failed with error %s\n",
 419                          fsp->fsp_name, strerror(errno) ));
 420
 421                 status = map_nt_error_from_unix(errno);
 422         }
 423
 424         notify_fname(conn, NOTIFY_ACTION_REMOVED,
 425                      FILE_NOTIFY_CHANGE_FILE_NAME,
 426                      fsp->fsp_name);
 427
 428         /* As we now have POSIX opens which can unlink
 429          * with other open files we may have taken
 430          * this code path with more than one share mode
 431          * entry - ensure we only delete once by resetting
 432          * the delete on close flag. JRA.
 433          */
 434
 435         set_delete_on_close_lck(lck, False, NULL);
 436
 437  done:
 438
 439         if (changed_user) {
 440                 /* unbecome user. */
 441                 pop_sec_ctx();
 442         }
 443
 444         TALLOC_FREE(lck);
 445         return status;
 446 }
 447
 448 void set_close_write_time(struct files_struct *fsp, struct timespec ts)
 449 {
 450         DEBUG(6,("close_write_time: %s" , time_to_asc(convert_timespec_to_time_t(ts))));
 451
 452         if (null_timespec(ts)) {
 453                 return;
 454         }
 455         /*
 456          * if the write time on close is explict set, then don't
 457          * need to fix it up to the value in the locking db
 458          */
 459         fsp->write_time_forced = false;
 460
 461         fsp->update_write_time_on_close = true;
 462         fsp->close_write_time = ts;
 463 }
 464
 465 static NTSTATUS update_write_time_on_close(struct files_struct *fsp)
 466 {
 467         SMB_STRUCT_STAT sbuf;
 468         struct timespec ts[2];
 469         NTSTATUS status;
 470
 471         ZERO_STRUCT(sbuf);
 472         ZERO_STRUCT(ts);
 473
 474         if (!fsp->update_write_time_on_close) {
 475                 return NT_STATUS_OK;
 476         }
 477
 478         if (null_timespec(fsp->close_write_time)) {
 479                 fsp->close_write_time = timespec_current();
 480         }
 481
 482         /* Ensure we have a valid stat struct for the source. */
 483         if (fsp->fh->fd != -1) {
 484                 if (SMB_VFS_FSTAT(fsp, &sbuf) == -1) {
 485                         return map_nt_error_from_unix(errno);
 486                 }
 487         } else {
 488                 if (SMB_VFS_STAT(fsp->conn,fsp->fsp_name,&sbuf) == -1) {
 489                         return map_nt_error_from_unix(errno);
 490                 }
 491         }
 492
 493         if (!VALID_STAT(sbuf)) {
 494                 /* if it doesn't seem to be a real file */
 495                 return NT_STATUS_OK;
 496         }
 497
 498         ts[1] = fsp->close_write_time;
 499         status = smb_set_file_time(fsp->conn, fsp, fsp->fsp_name,
 500                                    &sbuf, ts, true);
 501         if (!NT_STATUS_IS_OK(status)) {
 502                 return status;
 503         }
 504
 505         return NT_STATUS_OK;
 506 }
 507
 508 /****************************************************************************
 509  Close a file.
 510
 511  close_type can be NORMAL_CLOSE=0,SHUTDOWN_CLOSE,ERROR_CLOSE.
 512  printing and magic scripts are only run on normal close.
 513  delete on close is done on normal and shutdown close.
 514 ****************************************************************************/
 515
 516 static NTSTATUS close_normal_file(files_struct *fsp, enum file_close_type close_type)
 517 {
 518         NTSTATUS status = NT_STATUS_OK;
 519         NTSTATUS saved_status1 = NT_STATUS_OK;
 520         NTSTATUS saved_status2 = NT_STATUS_OK;
 521         NTSTATUS saved_status3 = NT_STATUS_OK;
 522         NTSTATUS saved_status4 = NT_STATUS_OK;
 523         connection_struct *conn = fsp->conn;
 524
 525         if (fsp->aio_write_behind) {
 526                 /*
 527                  * If we're finishing write behind on a close we can get a write
 528                  * error here, we must remember this.
 529                  */
 530                 int ret = wait_for_aio_completion(fsp);
 531                 if (ret) {
 532                         saved_status1 = map_nt_error_from_unix(ret);
 533                 }
 534         } else {
 535                 cancel_aio_by_fsp(fsp);
 536         }
 537
 538         /*
 539          * If we're flushing on a close we can get a write
 540          * error here, we must remember this.
 541          */
 542
 543         saved_status2 = close_filestruct(fsp);
 544
 545         if (fsp->print_file) {
 546                 print_fsp_end(fsp, close_type);
 547                 file_free(fsp);
 548                 return NT_STATUS_OK;
 549         }
 550
 551         /* If this is an old DOS or FCB open and we have multiple opens on
 552            the same handle we only have one share mode. Ensure we only remove
 553            the share mode on the last close. */
 554
 555         if (fsp->fh->ref_count == 1) {
 556                 /* Should we return on error here... ? */
 557                 saved_status3 = close_remove_share_mode(fsp, close_type);
 558         }
 559
 560         if(fsp->oplock_type) {
 561                 release_file_oplock(fsp);
 562         }
 563
 564         locking_close_file(smbd_messaging_context(), fsp);
 565
 566         status = fd_close(fsp);
 567
 568         /* check for magic scripts */
 569         if (close_type == NORMAL_CLOSE) {
 570                 check_magic(fsp);
 571         }
 572
 573         /*
 574          * Ensure pending modtime is set after close.
 575          */
 576
 577         saved_status4 = update_write_time_on_close(fsp);
 578
 579         if (NT_STATUS_IS_OK(status)) {
 580                 if (!NT_STATUS_IS_OK(saved_status1)) {
 581                         status = saved_status1;
 582                 } else if (!NT_STATUS_IS_OK(saved_status2)) {
 583                         status = saved_status2;
 584                 } else if (!NT_STATUS_IS_OK(saved_status3)) {
 585                         status = saved_status3;
 586                 } else if (!NT_STATUS_IS_OK(saved_status4)) {
 587                         status = saved_status4;
 588                 }
 589         }
 590
 591         DEBUG(2,("%s closed file %s (numopen=%d) %s\n",
 592                 conn->server_info->unix_name,fsp->fsp_name,
 593                 conn->num_files_open - 1,
 594                 nt_errstr(status) ));
 595
 596         file_free(fsp);
 597         return status;
 598 }
 599
 600 /****************************************************************************
 601  Close a directory opened by an NT SMB call.
 602 ****************************************************************************/
 603
 604 static NTSTATUS close_directory(files_struct *fsp, enum file_close_type close_type)
 605 {
 606         struct share_mode_lock *lck = 0;
 607         bool delete_dir = False;
 608         NTSTATUS status = NT_STATUS_OK;
 609
 610         /*
 611          * NT can set delete_on_close of the last open
 612          * reference to a directory also.
 613          */
 614
 615         lck = get_share_mode_lock(talloc_tos(), fsp->file_id, NULL, NULL,
 616                                   NULL);
 617
 618         if (lck == NULL) {
 619                 DEBUG(0, ("close_directory: Could not get share mode lock for %s\n", fsp->fsp_name));
 620                 return NT_STATUS_INVALID_PARAMETER;
 621         }
 622
 623         if (!del_share_mode(lck, fsp)) {
 624                 DEBUG(0, ("close_directory: Could not delete share entry for %s\n", fsp->fsp_name));
 625         }
 626
 627         if (fsp->initial_delete_on_close) {
 628                 bool became_user = False;
 629
 630                 /* Initial delete on close was set - for
 631                  * directories we don't care if anyone else
 632                  * wrote a real delete on close. */
 633
 634                 if (current_user.vuid != fsp->vuid) {
 635                         become_user(fsp->conn, fsp->vuid);
 636                         became_user = True;
 637                 }
 638                 send_stat_cache_delete_message(fsp->fsp_name);
 639                 set_delete_on_close_lck(lck, True, &current_user.ut);
 640                 if (became_user) {
 641                         unbecome_user();
 642                 }
 643         }
 644
 645         delete_dir = lck->delete_on_close;
 646
 647         if (delete_dir) {
 648                 int i;
 649                 /* See if others still have the dir open. If this is the
 650                  * case, then don't delete. If all opens are POSIX delete now. */
 651                 for (i=0; i<lck->num_share_modes; i++) {
 652                         struct share_mode_entry *e = &lck->share_modes[i];
 653                         if (is_valid_share_mode_entry(e)) {
 654                                 if (fsp->posix_open && (e->flags & SHARE_MODE_FLAG_POSIX_OPEN)) {
 655                                         continue;
 656                                 }
 657                                 delete_dir = False;
 658                                 break;
 659                         }
 660                 }
 661         }
 662
 663         if ((close_type == NORMAL_CLOSE || close_type == SHUTDOWN_CLOSE) &&
 664                                 delete_dir &&
 665                                 lck->delete_token) {
 666
 667                 /* Become the user who requested the delete. */
 668
 669                 if (!push_sec_ctx()) {
 670                         smb_panic("close_directory: failed to push sec_ctx.\n");
 671                 }
 672
 673                 set_sec_ctx(lck->delete_token->uid,
 674                                 lck->delete_token->gid,
 675                                 lck->delete_token->ngroups,
 676                                 lck->delete_token->groups,
 677                                 NULL);
 678
 679                 TALLOC_FREE(lck);
 680
 681                 status = rmdir_internals(talloc_tos(),
 682                                 fsp->conn, fsp->fsp_name);
 683
 684                 DEBUG(5,("close_directory: %s. Delete on close was set - "
 685                          "deleting directory returned %s.\n",
 686                          fsp->fsp_name, nt_errstr(status)));
 687
 688                 /* unbecome user. */
 689                 pop_sec_ctx();
 690
 691                 /*
 692                  * Ensure we remove any change notify requests that would
 693                  * now fail as the directory has been deleted.
 694                  */
 695
 696                 if(NT_STATUS_IS_OK(status)) {
 697                         remove_pending_change_notify_requests_by_fid(fsp, NT_STATUS_DELETE_PENDING);
 698                 }
 699         } else {
 700                 TALLOC_FREE(lck);
 701                 remove_pending_change_notify_requests_by_fid(
 702                         fsp, NT_STATUS_OK);
 703         }
 704
 705         /*
 706          * Do the code common to files and directories.
 707          */
 708         close_filestruct(fsp);
 709         file_free(fsp);
 710         return status;
 711 }
 712
 713 /****************************************************************************
 714  Close a files_struct.
 715 ****************************************************************************/
 716
 717 NTSTATUS close_file(files_struct *fsp, enum file_close_type close_type)
 718 {
 719         NTSTATUS status;
 720         struct files_struct *base_fsp = fsp->base_fsp;
 721
 722         if(fsp->is_directory) {
 723                 status = close_directory(fsp, close_type);
 724         } else if (fsp->fake_file_handle != NULL) {
 725                 status = close_fake_file(fsp);
 726         } else {
 727                 status = close_normal_file(fsp, close_type);
 728         }
 729
 730         if ((base_fsp != NULL) && (close_type != SHUTDOWN_CLOSE)) {
 731
 732                 /*
 733                  * fsp was a stream, the base fsp can't be a stream as well
 734                  *
 735                  * For SHUTDOWN_CLOSE this is not possible here, because
 736                  * SHUTDOWN_CLOSE only happens from files.c which walks the
 737                  * complete list of files. If we mess with more than one fsp
 738                  * those loops will become confused.
 739                  */
 740
 741                 SMB_ASSERT(base_fsp->base_fsp == NULL);
 742                 close_file(base_fsp, close_type);
 743         }
 744
 745         return status;
 746 }
 747
 748 /****************************************************************************
 749  Deal with an (authorized) message to close a file given the share mode
 750  entry.
 751 ****************************************************************************/
 752
 753 void msg_close_file(struct messaging_context *msg_ctx,
 754                         void *private_data,
 755                         uint32_t msg_type,
 756                         struct server_id server_id,
 757                         DATA_BLOB *data)
 758 {
 759         files_struct *fsp = NULL;
 760         struct share_mode_entry e;
 761
 762         message_to_share_mode_entry(&e, (char *)data->data);
 763
 764         if(DEBUGLVL(10)) {
 765                 char *sm_str = share_mode_str(NULL, 0, &e);
 766                 if (!sm_str) {
 767                         smb_panic("talloc failed");
 768                 }
 769                 DEBUG(10,("msg_close_file: got request to close share mode "
 770                         "entry %s\n", sm_str));
 771                 TALLOC_FREE(sm_str);
 772         }
 773
 774         fsp = file_find_dif(e.id, e.share_file_id);
 775         if (!fsp) {
 776                 DEBUG(10,("msg_close_file: failed to find file.\n"));
 777                 return;
 778         }
 779         close_file(fsp, NORMAL_CLOSE);
 780 }