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         chmod(fsp->fsp_name,0755);
  71         ret = smbrun(fsp->fsp_name,&tmp_fd);
  72         DEBUG(3,("Invoking magic command %s gave %d\n",
  73                 fsp->fsp_name,ret));
  74
  75         unlink(fsp->fsp_name);
  76         if (ret != 0 || tmp_fd == -1) {
  77                 if (tmp_fd != -1) {
  78                         close(tmp_fd);
  79                 }
  80                 TALLOC_FREE(ctx);
  81                 return;
  82         }
  83         outfd = open(magic_output, O_CREAT|O_EXCL|O_RDWR, 0600);
  84         if (outfd == -1) {
  85                 close(tmp_fd);
  86                 TALLOC_FREE(ctx);
  87                 return;
  88         }
  89
  90         if (sys_fstat(tmp_fd,&st) == -1) {
  91                 close(tmp_fd);
  92                 close(outfd);
  93                 return;
  94         }
  95
  96         transfer_file(tmp_fd,outfd,(SMB_OFF_T)st.st_size);
  97         close(tmp_fd);
  98         close(outfd);
  99         TALLOC_FREE(ctx);
 100 }
 101
 102 /****************************************************************************
 103   Common code to close a file or a directory.
 104 ****************************************************************************/
 105
 106 static NTSTATUS close_filestruct(files_struct *fsp)
 107 {
 108         NTSTATUS status = NT_STATUS_OK;
 109
 110         if (fsp->fh->fd != -1) {
 111                 if(flush_write_cache(fsp, CLOSE_FLUSH) == -1) {
 112                         status = map_nt_error_from_unix(errno);
 113                 }
 114                 delete_write_cache(fsp);
 115         }
 116
 117         return status;
 118 }
 119
 120 /****************************************************************************
 121  If any deferred opens are waiting on this close, notify them.
 122 ****************************************************************************/
 123
 124 static void notify_deferred_opens(struct share_mode_lock *lck)
 125 {
 126         int i;
 127
 128         for (i=0; i<lck->num_share_modes; i++) {
 129                 struct share_mode_entry *e = &lck->share_modes[i];
 130
 131                 if (!is_deferred_open_entry(e)) {
 132                         continue;
 133                 }
 134
 135                 if (procid_is_me(&e->pid)) {
 136                         /*
 137                          * We need to notify ourself to retry the open.  Do
 138                          * this by finding the queued SMB record, moving it to
 139                          * the head of the queue and changing the wait time to
 140                          * zero.
 141                          */
 142                         schedule_deferred_open_smb_message(e->op_mid);
 143                 } else {
 144                         char msg[MSG_SMB_SHARE_MODE_ENTRY_SIZE];
 145
 146                         share_mode_entry_to_message(msg, e);
 147
 148                         messaging_send_buf(smbd_messaging_context(),
 149                                            e->pid, MSG_SMB_OPEN_RETRY,
 150                                            (uint8 *)msg,
 151                                            MSG_SMB_SHARE_MODE_ENTRY_SIZE);
 152                 }
 153         }
 154 }
 155
 156 /****************************************************************************
 157  Delete all streams
 158 ****************************************************************************/
 159
 160 static NTSTATUS delete_all_streams(connection_struct *conn, const char *fname)
 161 {
 162         struct stream_struct *stream_info;
 163         int i;
 164         unsigned int num_streams;
 165         TALLOC_CTX *frame = talloc_stackframe();
 166         NTSTATUS status;
 167
 168         status = SMB_VFS_STREAMINFO(conn, NULL, fname, talloc_tos(),
 169                                     &num_streams, &stream_info);
 170
 171         if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_IMPLEMENTED)) {
 172                 DEBUG(10, ("no streams around\n"));
 173                 TALLOC_FREE(frame);
 174                 return NT_STATUS_OK;
 175         }
 176
 177         if (!NT_STATUS_IS_OK(status)) {
 178                 DEBUG(10, ("SMB_VFS_STREAMINFO failed: %s\n",
 179                            nt_errstr(status)));
 180                 goto fail;
 181         }
 182
 183         DEBUG(10, ("delete_all_streams found %d streams\n",
 184                    num_streams));
 185
 186         if (num_streams == 0) {
 187                 TALLOC_FREE(frame);
 188                 return NT_STATUS_OK;
 189         }
 190
 191         for (i=0; i<num_streams; i++) {
 192                 int res;
 193                 char *streamname;
 194
 195                 if (strequal(stream_info[i].name, "::$DATA")) {
 196                         continue;
 197                 }
 198
 199                 streamname = talloc_asprintf(talloc_tos(), "%s%s", fname,
 200                                              stream_info[i].name);
 201
 202                 if (streamname == NULL) {
 203                         DEBUG(0, ("talloc_aprintf failed\n"));
 204                         status = NT_STATUS_NO_MEMORY;
 205                         goto fail;
 206                 }
 207
 208                 res = SMB_VFS_UNLINK(conn, streamname);
 209
 210                 TALLOC_FREE(streamname);
 211
 212                 if (res == -1) {
 213                         status = map_nt_error_from_unix(errno);
 214                         DEBUG(10, ("Could not delete stream %s: %s\n",
 215                                    streamname, strerror(errno)));
 216                         break;
 217                 }
 218         }
 219
 220  fail:
 221         TALLOC_FREE(frame);
 222         return status;
 223 }
 224
 225 /****************************************************************************
 226  Deal with removing a share mode on last close.
 227 ****************************************************************************/
 228
 229 static NTSTATUS close_remove_share_mode(files_struct *fsp,
 230                                         enum file_close_type close_type)
 231 {
 232         connection_struct *conn = fsp->conn;
 233         bool delete_file = false;
 234         bool changed_user = false;
 235         struct share_mode_lock *lck;
 236         SMB_STRUCT_STAT sbuf;
 237         NTSTATUS status = NT_STATUS_OK;
 238         int ret;
 239         struct file_id id;
 240
 241         /*
 242          * Lock the share entries, and determine if we should delete
 243          * on close. If so delete whilst the lock is still in effect.
 244          * This prevents race conditions with the file being created. JRA.
 245          */
 246
 247         lck = get_share_mode_lock(talloc_tos(), fsp->file_id, NULL, NULL,
 248                                   NULL);
 249
 250         if (lck == NULL) {
 251                 DEBUG(0, ("close_remove_share_mode: Could not get share mode "
 252                           "lock for file %s\n", fsp->fsp_name));
 253                 return NT_STATUS_INVALID_PARAMETER;
 254         }
 255
 256         if (fsp->write_time_forced) {
 257                 set_close_write_time(fsp, lck->changed_write_time);
 258         }
 259
 260         if (!del_share_mode(lck, fsp)) {
 261                 DEBUG(0, ("close_remove_share_mode: Could not delete share "
 262                           "entry for file %s\n", fsp->fsp_name));
 263         }
 264
 265         if (fsp->initial_delete_on_close && (lck->delete_token == NULL)) {
 266                 bool became_user = False;
 267
 268                 /* Initial delete on close was set and no one else
 269                  * wrote a real delete on close. */
 270
 271                 if (current_user.vuid != fsp->vuid) {
 272                         become_user(conn, fsp->vuid);
 273                         became_user = True;
 274                 }
 275                 set_delete_on_close_lck(lck, True, &current_user.ut);
 276                 if (became_user) {
 277                         unbecome_user();
 278                 }
 279         }
 280
 281         delete_file = lck->delete_on_close;
 282
 283         if (delete_file) {
 284                 int i;
 285                 /* See if others still have the file open. If this is the
 286                  * case, then don't delete. If all opens are POSIX delete now. */
 287                 for (i=0; i<lck->num_share_modes; i++) {
 288                         struct share_mode_entry *e = &lck->share_modes[i];
 289                         if (is_valid_share_mode_entry(e)) {
 290                                 if (fsp->posix_open && (e->flags & SHARE_MODE_FLAG_POSIX_OPEN)) {
 291                                         continue;
 292                                 }
 293                                 delete_file = False;
 294                                 break;
 295                         }
 296                 }
 297         }
 298
 299         /* Notify any deferred opens waiting on this close. */
 300         notify_deferred_opens(lck);
 301         reply_to_oplock_break_requests(fsp);
 302
 303         /*
 304          * NT can set delete_on_close of the last open
 305          * reference to a file.
 306          */
 307
 308         if (!(close_type == NORMAL_CLOSE || close_type == SHUTDOWN_CLOSE)
 309             || !delete_file
 310             || (lck->delete_token == NULL)) {
 311                 TALLOC_FREE(lck);
 312                 return NT_STATUS_OK;
 313         }
 314
 315         /*
 316          * Ok, we have to delete the file
 317          */
 318
 319         DEBUG(5,("close_remove_share_mode: file %s. Delete on close was set "
 320                  "- deleting file.\n", fsp->fsp_name));
 321
 322         /*
 323          * Don't try to update the write time when we delete the file
 324          */
 325         fsp->update_write_time_on_close = false;
 326
 327         if (!unix_token_equal(lck->delete_token, &current_user.ut)) {
 328                 /* Become the user who requested the delete. */
 329
 330                 DEBUG(5,("close_remove_share_mode: file %s. "
 331                         "Change user to uid %u\n",
 332                         fsp->fsp_name,
 333                         (unsigned int)lck->delete_token->uid));
 334
 335                 if (!push_sec_ctx()) {
 336                         smb_panic("close_remove_share_mode: file %s. failed to push "
 337                                   "sec_ctx.\n");
 338                 }
 339
 340                 set_sec_ctx(lck->delete_token->uid,
 341                             lck->delete_token->gid,
 342                             lck->delete_token->ngroups,
 343                             lck->delete_token->groups,
 344                             NULL);
 345
 346                 changed_user = true;
 347         }
 348
 349         /* We can only delete the file if the name we have is still valid and
 350            hasn't been renamed. */
 351
 352         if (fsp->posix_open) {
 353                 ret = SMB_VFS_LSTAT(conn,fsp->fsp_name,&sbuf);
 354         } else {
 355                 ret = SMB_VFS_STAT(conn,fsp->fsp_name,&sbuf);
 356         }
 357
 358         if (ret != 0) {
 359                 DEBUG(5,("close_remove_share_mode: file %s. Delete on close "
 360                          "was set and stat failed with error %s\n",
 361                          fsp->fsp_name, strerror(errno) ));
 362                 /*
 363                  * Don't save the errno here, we ignore this error
 364                  */
 365                 goto done;
 366         }
 367
 368         id = vfs_file_id_from_sbuf(conn, &sbuf);
 369
 370         if (!file_id_equal(&fsp->file_id, &id)) {
 371                 DEBUG(5,("close_remove_share_mode: file %s. Delete on close "
 372                          "was set and dev and/or inode does not match\n",
 373                          fsp->fsp_name ));
 374                 DEBUG(5,("close_remove_share_mode: file %s. stored file_id %s, "
 375                          "stat file_id %s\n",
 376                          fsp->fsp_name,
 377                          file_id_string_tos(&fsp->file_id),
 378                          file_id_string_tos(&id)));
 379                 /*
 380                  * Don't save the errno here, we ignore this error
 381                  */
 382                 goto done;
 383         }
 384
 385         if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
 386             && !is_ntfs_stream_name(fsp->fsp_name)) {
 387
 388                 status = delete_all_streams(conn, fsp->fsp_name);
 389
 390                 if (!NT_STATUS_IS_OK(status)) {
 391                         DEBUG(5, ("delete_all_streams failed: %s\n",
 392                                   nt_errstr(status)));
 393                         goto done;
 394                 }
 395         }
 396
 397
 398         if (SMB_VFS_UNLINK(conn,fsp->fsp_name) != 0) {
 399                 /*
 400                  * This call can potentially fail as another smbd may
 401                  * have had the file open with delete on close set and
 402                  * deleted it when its last reference to this file
 403                  * went away. Hence we log this but not at debug level
 404                  * zero.
 405                  */
 406
 407                 DEBUG(5,("close_remove_share_mode: file %s. Delete on close "
 408                          "was set and unlink failed with error %s\n",
 409                          fsp->fsp_name, strerror(errno) ));
 410
 411                 status = map_nt_error_from_unix(errno);
 412         }
 413
 414         notify_fname(conn, NOTIFY_ACTION_REMOVED,
 415                      FILE_NOTIFY_CHANGE_FILE_NAME,
 416                      fsp->fsp_name);
 417
 418         /* As we now have POSIX opens which can unlink
 419          * with other open files we may have taken
 420          * this code path with more than one share mode
 421          * entry - ensure we only delete once by resetting
 422          * the delete on close flag. JRA.
 423          */
 424
 425         set_delete_on_close_lck(lck, False, NULL);
 426
 427  done:
 428
 429         if (changed_user) {
 430                 /* unbecome user. */
 431                 pop_sec_ctx();
 432         }
 433
 434         TALLOC_FREE(lck);
 435         return status;
 436 }
 437
 438 void set_close_write_time(struct files_struct *fsp, struct timespec ts)
 439 {
 440         DEBUG(6,("close_write_time: %s" , time_to_asc(convert_timespec_to_time_t(ts))));
 441
 442         if (null_timespec(ts)) {
 443                 return;
 444         }
 445         /*
 446          * if the write time on close is explict set, then don't
 447          * need to fix it up to the value in the locking db
 448          */
 449         fsp->write_time_forced = false;
 450
 451         fsp->update_write_time_on_close = true;
 452         fsp->close_write_time = ts;
 453 }
 454
 455 static NTSTATUS update_write_time_on_close(struct files_struct *fsp)
 456 {
 457         SMB_STRUCT_STAT sbuf;
 458         struct timespec ts[2];
 459         NTSTATUS status;
 460
 461         ZERO_STRUCT(sbuf);
 462         ZERO_STRUCT(ts);
 463
 464         if (!fsp->update_write_time_on_close) {
 465                 return NT_STATUS_OK;
 466         }
 467
 468         if (null_timespec(fsp->close_write_time)) {
 469                 fsp->close_write_time = timespec_current();
 470         }
 471
 472         /* Ensure we have a valid stat struct for the source. */
 473         if (fsp->fh->fd != -1) {
 474                 if (SMB_VFS_FSTAT(fsp, &sbuf) == -1) {
 475                         return map_nt_error_from_unix(errno);
 476                 }
 477         } else {
 478                 if (SMB_VFS_STAT(fsp->conn,fsp->fsp_name,&sbuf) == -1) {
 479                         return map_nt_error_from_unix(errno);
 480                 }
 481         }
 482
 483         if (!VALID_STAT(sbuf)) {
 484                 /* if it doesn't seem to be a real file */
 485                 return NT_STATUS_OK;
 486         }
 487
 488         ts[1] = fsp->close_write_time;
 489         status = smb_set_file_time(fsp->conn, fsp, fsp->fsp_name,
 490                                    &sbuf, ts, true);
 491         if (!NT_STATUS_IS_OK(status)) {
 492                 return status;
 493         }
 494
 495         return NT_STATUS_OK;
 496 }
 497
 498 /****************************************************************************
 499  Close a file.
 500
 501  close_type can be NORMAL_CLOSE=0,SHUTDOWN_CLOSE,ERROR_CLOSE.
 502  printing and magic scripts are only run on normal close.
 503  delete on close is done on normal and shutdown close.
 504 ****************************************************************************/
 505
 506 static NTSTATUS close_normal_file(files_struct *fsp, enum file_close_type close_type)
 507 {
 508         NTSTATUS status = NT_STATUS_OK;
 509         NTSTATUS saved_status1 = NT_STATUS_OK;
 510         NTSTATUS saved_status2 = NT_STATUS_OK;
 511         NTSTATUS saved_status3 = NT_STATUS_OK;
 512         NTSTATUS saved_status4 = NT_STATUS_OK;
 513         connection_struct *conn = fsp->conn;
 514
 515         if (fsp->aio_write_behind) {
 516                 /*
 517                  * If we're finishing write behind on a close we can get a write
 518                  * error here, we must remember this.
 519                  */
 520                 int ret = wait_for_aio_completion(fsp);
 521                 if (ret) {
 522                         saved_status1 = map_nt_error_from_unix(ret);
 523                 }
 524         } else {
 525                 cancel_aio_by_fsp(fsp);
 526         }
 527
 528         /*
 529          * If we're flushing on a close we can get a write
 530          * error here, we must remember this.
 531          */
 532
 533         saved_status2 = close_filestruct(fsp);
 534
 535         if (fsp->print_file) {
 536                 print_fsp_end(fsp, close_type);
 537                 file_free(fsp);
 538                 return NT_STATUS_OK;
 539         }
 540
 541         /* If this is an old DOS or FCB open and we have multiple opens on
 542            the same handle we only have one share mode. Ensure we only remove
 543            the share mode on the last close. */
 544
 545         if (fsp->fh->ref_count == 1) {
 546                 /* Should we return on error here... ? */
 547                 saved_status3 = close_remove_share_mode(fsp, close_type);
 548         }
 549
 550         if(fsp->oplock_type) {
 551                 release_file_oplock(fsp);
 552         }
 553
 554         locking_close_file(smbd_messaging_context(), fsp);
 555
 556         status = fd_close(fsp);
 557
 558         /* check for magic scripts */
 559         if (close_type == NORMAL_CLOSE) {
 560                 check_magic(fsp);
 561         }
 562
 563         /*
 564          * Ensure pending modtime is set after close.
 565          */
 566
 567         saved_status4 = update_write_time_on_close(fsp);
 568
 569         if (NT_STATUS_IS_OK(status)) {
 570                 if (!NT_STATUS_IS_OK(saved_status1)) {
 571                         status = saved_status1;
 572                 } else if (!NT_STATUS_IS_OK(saved_status2)) {
 573                         status = saved_status2;
 574                 } else if (!NT_STATUS_IS_OK(saved_status3)) {
 575                         status = saved_status3;
 576                 } else if (!NT_STATUS_IS_OK(saved_status4)) {
 577                         status = saved_status4;
 578                 }
 579         }
 580
 581         DEBUG(2,("%s closed file %s (numopen=%d) %s\n",
 582                 conn->user,fsp->fsp_name,
 583                 conn->num_files_open - 1,
 584                 nt_errstr(status) ));
 585
 586         file_free(fsp);
 587         return status;
 588 }
 589
 590 /****************************************************************************
 591  Close a directory opened by an NT SMB call.
 592 ****************************************************************************/
 593
 594 static NTSTATUS close_directory(files_struct *fsp, enum file_close_type close_type)
 595 {
 596         struct share_mode_lock *lck = 0;
 597         bool delete_dir = False;
 598         NTSTATUS status = NT_STATUS_OK;
 599
 600         /*
 601          * NT can set delete_on_close of the last open
 602          * reference to a directory also.
 603          */
 604
 605         lck = get_share_mode_lock(talloc_tos(), fsp->file_id, NULL, NULL,
 606                                   NULL);
 607
 608         if (lck == NULL) {
 609                 DEBUG(0, ("close_directory: Could not get share mode lock for %s\n", fsp->fsp_name));
 610                 return NT_STATUS_INVALID_PARAMETER;
 611         }
 612
 613         if (!del_share_mode(lck, fsp)) {
 614                 DEBUG(0, ("close_directory: Could not delete share entry for %s\n", fsp->fsp_name));
 615         }
 616
 617         if (fsp->initial_delete_on_close) {
 618                 bool became_user = False;
 619
 620                 /* Initial delete on close was set - for
 621                  * directories we don't care if anyone else
 622                  * wrote a real delete on close. */
 623
 624                 if (current_user.vuid != fsp->vuid) {
 625                         become_user(fsp->conn, fsp->vuid);
 626                         became_user = True;
 627                 }
 628                 send_stat_cache_delete_message(fsp->fsp_name);
 629                 set_delete_on_close_lck(lck, True, &current_user.ut);
 630                 if (became_user) {
 631                         unbecome_user();
 632                 }
 633         }
 634
 635         delete_dir = lck->delete_on_close;
 636
 637         if (delete_dir) {
 638                 int i;
 639                 /* See if others still have the dir open. If this is the
 640                  * case, then don't delete. If all opens are POSIX delete now. */
 641                 for (i=0; i<lck->num_share_modes; i++) {
 642                         struct share_mode_entry *e = &lck->share_modes[i];
 643                         if (is_valid_share_mode_entry(e)) {
 644                                 if (fsp->posix_open && (e->flags & SHARE_MODE_FLAG_POSIX_OPEN)) {
 645                                         continue;
 646                                 }
 647                                 delete_dir = False;
 648                                 break;
 649                         }
 650                 }
 651         }
 652
 653         if ((close_type == NORMAL_CLOSE || close_type == SHUTDOWN_CLOSE) &&
 654                                 delete_dir &&
 655                                 lck->delete_token) {
 656
 657                 /* Become the user who requested the delete. */
 658
 659                 if (!push_sec_ctx()) {
 660                         smb_panic("close_directory: failed to push sec_ctx.\n");
 661                 }
 662
 663                 set_sec_ctx(lck->delete_token->uid,
 664                                 lck->delete_token->gid,
 665                                 lck->delete_token->ngroups,
 666                                 lck->delete_token->groups,
 667                                 NULL);
 668
 669                 TALLOC_FREE(lck);
 670
 671                 status = rmdir_internals(talloc_tos(),
 672                                 fsp->conn, fsp->fsp_name);
 673
 674                 DEBUG(5,("close_directory: %s. Delete on close was set - "
 675                          "deleting directory returned %s.\n",
 676                          fsp->fsp_name, nt_errstr(status)));
 677
 678                 /* unbecome user. */
 679                 pop_sec_ctx();
 680
 681                 /*
 682                  * Ensure we remove any change notify requests that would
 683                  * now fail as the directory has been deleted.
 684                  */
 685
 686                 if(NT_STATUS_IS_OK(status)) {
 687                         remove_pending_change_notify_requests_by_fid(fsp, NT_STATUS_DELETE_PENDING);
 688                 }
 689         } else {
 690                 TALLOC_FREE(lck);
 691                 remove_pending_change_notify_requests_by_fid(
 692                         fsp, NT_STATUS_OK);
 693         }
 694
 695         /*
 696          * Do the code common to files and directories.
 697          */
 698         close_filestruct(fsp);
 699         file_free(fsp);
 700         return status;
 701 }
 702
 703 /****************************************************************************
 704  Close a 'stat file' opened internally.
 705 ****************************************************************************/
 706
 707 static NTSTATUS close_stat(files_struct *fsp)
 708 {
 709         /*
 710          * Do the code common to files and directories.
 711          */
 712         close_filestruct(fsp);
 713         file_free(fsp);
 714         return NT_STATUS_OK;
 715 }
 716
 717 /****************************************************************************
 718  Close a files_struct.
 719 ****************************************************************************/
 720
 721 NTSTATUS close_file(files_struct *fsp, enum file_close_type close_type)
 722 {
 723         NTSTATUS status;
 724         struct files_struct *base_fsp = fsp->base_fsp;
 725
 726         if(fsp->is_directory) {
 727                 status = close_directory(fsp, close_type);
 728         } else if (fsp->is_stat) {
 729                 status = close_stat(fsp);
 730         } else if (fsp->fake_file_handle != NULL) {
 731                 status = close_fake_file(fsp);
 732         } else {
 733                 status = close_normal_file(fsp, close_type);
 734         }
 735
 736         if ((base_fsp != NULL) && (close_type != SHUTDOWN_CLOSE)) {
 737
 738                 /*
 739                  * fsp was a stream, the base fsp can't be a stream as well
 740                  *
 741                  * For SHUTDOWN_CLOSE this is not possible here, because
 742                  * SHUTDOWN_CLOSE only happens from files.c which walks the
 743                  * complete list of files. If we mess with more than one fsp
 744                  * those loops will become confused.
 745                  */
 746
 747                 SMB_ASSERT(base_fsp->base_fsp == NULL);
 748                 close_file(base_fsp, close_type);
 749         }
 750
 751         return status;
 752 }
 753
 754 /****************************************************************************
 755  Deal with an (authorized) message to close a file given the share mode
 756  entry.
 757 ****************************************************************************/
 758
 759 void msg_close_file(struct messaging_context *msg_ctx,
 760                         void *private_data,
 761                         uint32_t msg_type,
 762                         struct server_id server_id,
 763                         DATA_BLOB *data)
 764 {
 765         files_struct *fsp = NULL;
 766         struct share_mode_entry e;
 767
 768         message_to_share_mode_entry(&e, (char *)data->data);
 769
 770         if(DEBUGLVL(10)) {
 771                 char *sm_str = share_mode_str(NULL, 0, &e);
 772                 if (!sm_str) {
 773                         smb_panic("talloc failed");
 774                 }
 775                 DEBUG(10,("msg_close_file: got request to close share mode "
 776                         "entry %s\n", sm_str));
 777                 TALLOC_FREE(sm_str);
 778         }
 779
 780         fsp = file_find_dif(e.id, e.share_file_id);
 781         if (!fsp) {
 782                 DEBUG(10,("msg_close_file: failed to find file.\n"));
 783                 return;
 784         }
 785         close_file(fsp, NORMAL_CLOSE);
 786 }