source3/smbd/scavenger.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    smbd scavenger daemon
   4
   5    Copyright (C) Gregor Beck                    2013
   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 "messages.h"
  23 #include "serverid.h"
  24 #include "smbd/globals.h"
  25 #include "smbd/smbXsrv_open.h"
  26 #include "smbd/scavenger.h"
  27 #include "locking/share_mode_lock.h"
  28 #include "locking/leases_db.h"
  29 #include "locking/proto.h"
  30 #include "librpc/gen_ndr/open_files.h"
  31 #include "lib/util/server_id.h"
  32 #include "lib/util/util_process.h"
  33 #include "lib/util/sys_rw_data.h"
  34
  35 #undef DBGC_CLASS
  36 #define DBGC_CLASS DBGC_SCAVENGER
  37
  38 struct smbd_scavenger_state {
  39         struct tevent_context *ev;
  40         struct messaging_context *msg;
  41         struct server_id parent_id;
  42         struct server_id *scavenger_id;
  43         bool am_scavenger;
  44 };
  45
  46 static struct smbd_scavenger_state *smbd_scavenger_state = NULL;
  47
  48 struct scavenger_message {
  49         struct file_id file_id;
  50         uint64_t open_persistent_id;
  51         NTTIME until;
  52 };
  53
  54 static int smbd_scavenger_main(struct smbd_scavenger_state *state)
  55 {
  56         struct server_id_buf tmp1, tmp2;
  57
  58         DEBUG(10, ("scavenger: %s started, parent: %s\n",
  59                    server_id_str_buf(*state->scavenger_id, &tmp1),
  60                    server_id_str_buf(state->parent_id, &tmp2)));
  61
  62         while (true) {
  63                 TALLOC_CTX *frame = talloc_stackframe();
  64                 int ret;
  65
  66                 ret = tevent_loop_once(state->ev);
  67                 if (ret != 0) {
  68                         DEBUG(2, ("tevent_loop_once failed: %s\n",
  69                                   strerror(errno)));
  70                         TALLOC_FREE(frame);
  71                         return 1;
  72                 }
  73
  74                 DEBUG(10, ("scavenger: %s event loop iteration\n",
  75                            server_id_str_buf(*state->scavenger_id, &tmp1)));
  76                 TALLOC_FREE(frame);
  77         }
  78
  79         return 0;
  80 }
  81
  82 static void smbd_scavenger_done(struct tevent_context *event_ctx, struct tevent_fd *fde,
  83                                 uint16_t flags, void *private_data)
  84 {
  85         struct smbd_scavenger_state *state = talloc_get_type_abort(
  86                 private_data, struct smbd_scavenger_state);
  87         struct server_id_buf tmp;
  88
  89         DEBUG(2, ("scavenger: %s died\n",
  90                   server_id_str_buf(*state->scavenger_id, &tmp)));
  91
  92         TALLOC_FREE(state->scavenger_id);
  93 }
  94
  95 static void smbd_scavenger_parent_dead(struct tevent_context *event_ctx,
  96                                        struct tevent_fd *fde,
  97                                        uint16_t flags, void *private_data)
  98 {
  99         struct smbd_scavenger_state *state = talloc_get_type_abort(
 100                 private_data, struct smbd_scavenger_state);
 101         struct server_id_buf tmp1, tmp2;
 102
 103         DEBUG(2, ("scavenger: %s parent %s died\n",
 104                   server_id_str_buf(*state->scavenger_id, &tmp1),
 105                   server_id_str_buf(state->parent_id, &tmp2)));
 106
 107         exit_server("smbd_scavenger_parent_dead");
 108 }
 109
 110 static void scavenger_sig_term_handler(struct tevent_context *ev,
 111                                        struct tevent_signal *se,
 112                                        int signum,
 113                                        int count,
 114                                        void *siginfo,
 115                                        void *private_data)
 116 {
 117         exit_server_cleanly("termination signal");
 118 }
 119
 120 static void scavenger_setup_sig_term_handler(struct tevent_context *ev_ctx)
 121 {
 122         struct tevent_signal *se;
 123
 124         se = tevent_add_signal(ev_ctx,
 125                                ev_ctx,
 126                                SIGTERM, 0,
 127                                scavenger_sig_term_handler,
 128                                NULL);
 129         if (se == NULL) {
 130                 exit_server("failed to setup SIGTERM handler");
 131         }
 132 }
 133
 134 static bool smbd_scavenger_running(struct smbd_scavenger_state *state)
 135 {
 136         if (state->scavenger_id == NULL) {
 137                 return false;
 138         }
 139
 140         return serverid_exists(state->scavenger_id);
 141 }
 142
 143 static int smbd_scavenger_server_id_destructor(struct server_id *id)
 144 {
 145         return 0;
 146 }
 147
 148 static bool scavenger_say_hello(int fd, struct server_id self)
 149 {
 150         ssize_t ret;
 151         struct server_id_buf tmp;
 152
 153         ret = write_data(fd, &self, sizeof(self));
 154         if (ret == -1) {
 155                 DEBUG(2, ("Failed to write to pipe: %s\n", strerror(errno)));
 156                 return false;
 157         }
 158         if (ret < sizeof(self)) {
 159                 DBG_WARNING("Could not write serverid\n");
 160                 return false;
 161         }
 162
 163         DEBUG(4, ("scavenger_say_hello: self[%s]\n",
 164                   server_id_str_buf(self, &tmp)));
 165         return true;
 166 }
 167
 168 static bool scavenger_wait_hello(int fd, struct server_id *child)
 169 {
 170         struct server_id_buf tmp;
 171         ssize_t ret;
 172
 173         ret = read_data(fd, child, sizeof(struct server_id));
 174         if (ret == -1) {
 175                 DEBUG(2, ("Failed to read from pipe: %s\n",
 176                           strerror(errno)));
 177                 return false;
 178         }
 179         if (ret < sizeof(struct server_id)) {
 180                 DBG_WARNING("Could not read serverid\n");
 181                 return false;
 182         }
 183
 184         DEBUG(4, ("scavenger_say_hello: child[%s]\n",
 185                   server_id_str_buf(*child, &tmp)));
 186         return true;
 187 }
 188
 189 static bool smbd_scavenger_start(struct smbd_scavenger_state *state)
 190 {
 191         struct server_id self = messaging_server_id(state->msg);
 192         struct tevent_fd *fde = NULL;
 193         int fds[2];
 194         int ret;
 195         bool ok;
 196
 197         SMB_ASSERT(server_id_equal(&state->parent_id, &self));
 198
 199         if (smbd_scavenger_running(state)) {
 200                 struct server_id_buf tmp;
 201                 DEBUG(10, ("scavenger %s already running\n",
 202                            server_id_str_buf(*state->scavenger_id,
 203                                              &tmp)));
 204                 return true;
 205         }
 206
 207         if (state->scavenger_id != NULL) {
 208                 struct server_id_buf tmp;
 209                 DEBUG(10, ("scavenger zombie %s, cleaning up\n",
 210                            server_id_str_buf(*state->scavenger_id,
 211                                              &tmp)));
 212                 TALLOC_FREE(state->scavenger_id);
 213         }
 214
 215         state->scavenger_id = talloc_zero(state, struct server_id);
 216         if (state->scavenger_id == NULL) {
 217                 DEBUG(2, ("Out of memory\n"));
 218                 goto fail;
 219         }
 220         talloc_set_destructor(state->scavenger_id,
 221                               smbd_scavenger_server_id_destructor);
 222
 223         ret = socketpair(AF_UNIX, SOCK_STREAM, 0, fds);
 224         if (ret == -1) {
 225                 DEBUG(2, ("socketpair failed: %s", strerror(errno)));
 226                 goto fail;
 227         }
 228
 229         smb_set_close_on_exec(fds[0]);
 230         smb_set_close_on_exec(fds[1]);
 231
 232         ret = fork();
 233         if (ret == -1) {
 234                 int err = errno;
 235                 close(fds[0]);
 236                 close(fds[1]);
 237                 DEBUG(0, ("fork failed: %s", strerror(err)));
 238                 goto fail;
 239         }
 240
 241         if (ret == 0) {
 242                 /* child */
 243
 244                 NTSTATUS status;
 245
 246                 close(fds[0]);
 247
 248                 status = smbd_reinit_after_fork(state->msg, state->ev,
 249                                                 true);
 250                 if (!NT_STATUS_IS_OK(status)) {
 251                         DEBUG(2, ("reinit_after_fork failed: %s\n",
 252                                   nt_errstr(status)));
 253                         exit_server("reinit_after_fork failed");
 254                         return false;
 255                 }
 256
 257                 process_set_title("smbd-scavenger", "scavenger");
 258                 reopen_logs();
 259
 260                 state->am_scavenger = true;
 261                 *state->scavenger_id = messaging_server_id(state->msg);
 262
 263                 scavenger_setup_sig_term_handler(state->ev);
 264
 265                 ok = scavenger_say_hello(fds[1], *state->scavenger_id);
 266                 if (!ok) {
 267                         DEBUG(2, ("scavenger_say_hello failed\n"));
 268                         exit_server("scavenger_say_hello failed");
 269                         return false;
 270                 }
 271
 272                 fde = tevent_add_fd(state->ev, state->scavenger_id,
 273                                     fds[1], TEVENT_FD_READ,
 274                                     smbd_scavenger_parent_dead, state);
 275                 if (fde == NULL) {
 276                         DEBUG(2, ("tevent_add_fd(smbd_scavenger_parent_dead) "
 277                                   "failed\n"));
 278                         exit_server("tevent_add_fd(smbd_scavenger_parent_dead) "
 279                                     "failed");
 280                         return false;
 281                 }
 282                 tevent_fd_set_auto_close(fde);
 283
 284                 ret = smbd_scavenger_main(state);
 285
 286                 DEBUG(10, ("scavenger ended: %d\n", ret));
 287                 exit_server_cleanly("scavenger ended");
 288                 return false;
 289         }
 290
 291         /* parent */
 292         close(fds[1]);
 293
 294         ok = scavenger_wait_hello(fds[0], state->scavenger_id);
 295         if (!ok) {
 296                 close(fds[0]);
 297                 goto fail;
 298         }
 299
 300         fde = tevent_add_fd(state->ev, state->scavenger_id,
 301                             fds[0], TEVENT_FD_READ,
 302                             smbd_scavenger_done, state);
 303         if (fde == NULL) {
 304                 close(fds[0]);
 305                 goto fail;
 306         }
 307         tevent_fd_set_auto_close(fde);
 308
 309         return true;
 310 fail:
 311         TALLOC_FREE(state->scavenger_id);
 312         return false;
 313 }
 314
 315 static void scavenger_add_timer(struct smbd_scavenger_state *state,
 316                                 struct scavenger_message *msg);
 317
 318 static void smbd_scavenger_msg(struct messaging_context *msg_ctx,
 319                                void *private_data,
 320                                uint32_t msg_type,
 321                                struct server_id src,
 322                                DATA_BLOB *data)
 323 {
 324         struct smbd_scavenger_state *state =
 325                 talloc_get_type_abort(private_data,
 326                                       struct smbd_scavenger_state);
 327         TALLOC_CTX *frame = talloc_stackframe();
 328         struct server_id self = messaging_server_id(msg_ctx);
 329         struct scavenger_message *msg = NULL;
 330         struct server_id_buf tmp1, tmp2;
 331
 332         DEBUG(10, ("smbd_scavenger_msg: %s got message from %s\n",
 333                    server_id_str_buf(self, &tmp1),
 334                    server_id_str_buf(src, &tmp2)));
 335
 336         if (server_id_equal(&state->parent_id, &self)) {
 337                 NTSTATUS status;
 338
 339                 if (!smbd_scavenger_running(state) &&
 340                     !smbd_scavenger_start(state))
 341                 {
 342                         DEBUG(2, ("Failed to start scavenger\n"));
 343                         goto done;
 344                 }
 345                 DEBUG(10, ("forwarding message to scavenger\n"));
 346
 347                 status = messaging_send(msg_ctx,
 348                                         *state->scavenger_id, msg_type, data);
 349                 if (!NT_STATUS_IS_OK(status)) {
 350                         DEBUG(2, ("forwarding message to scavenger failed: "
 351                                   "%s\n", nt_errstr(status)));
 352                         goto done;
 353                 }
 354                 goto done;
 355         }
 356
 357         if (!state->am_scavenger) {
 358                 DEBUG(10, ("im not the scavenger: ignore message\n"));
 359                 goto done;
 360         }
 361
 362         if (!server_id_equal(&state->parent_id, &src)) {
 363                 DEBUG(10, ("scavenger: ignore spurious message\n"));
 364                 goto done;
 365         }
 366
 367         DEBUG(10, ("scavenger: got a message\n"));
 368         msg = (struct scavenger_message*)data->data;
 369         scavenger_add_timer(state, msg);
 370 done:
 371         talloc_free(frame);
 372 }
 373
 374 bool smbd_scavenger_init(TALLOC_CTX *mem_ctx,
 375                          struct messaging_context *msg,
 376                          struct tevent_context *ev)
 377 {
 378         struct smbd_scavenger_state *state;
 379         NTSTATUS status;
 380
 381         if (smbd_scavenger_state) {
 382                 DEBUG(10, ("smbd_scavenger_init called again\n"));
 383                 return true;
 384         }
 385
 386         state = talloc_zero(mem_ctx, struct smbd_scavenger_state);
 387         if (state == NULL) {
 388                 DEBUG(2, ("Out of memory\n"));
 389                 return false;
 390         }
 391
 392         state->msg = msg;
 393         state->ev = ev;
 394         state->parent_id = messaging_server_id(msg);
 395
 396         status = messaging_register(msg, state, MSG_SMB_SCAVENGER,
 397                                     smbd_scavenger_msg);
 398         if (!NT_STATUS_IS_OK(status)) {
 399                 DEBUG(2, ("failed to register message handler: %s\n",
 400                           nt_errstr(status)));
 401                 goto fail;
 402         }
 403
 404         smbd_scavenger_state = state;
 405         return true;
 406 fail:
 407         talloc_free(state);
 408         return false;
 409 }
 410
 411 void scavenger_schedule_disconnected(struct files_struct *fsp)
 412 {
 413         NTSTATUS status;
 414         struct server_id self = messaging_server_id(fsp->conn->sconn->msg_ctx);
 415         struct timeval disconnect_time, until;
 416         uint64_t timeout_usec;
 417         struct scavenger_message msg;
 418         DATA_BLOB msg_blob;
 419         struct server_id_buf tmp;
 420         struct file_id_buf idbuf;
 421
 422         if (fsp->op == NULL) {
 423                 return;
 424         }
 425         nttime_to_timeval(&disconnect_time, fsp->op->global->disconnect_time);
 426         timeout_usec = 1000 * fsp->op->global->durable_timeout_msec;
 427         until = timeval_add(&disconnect_time,
 428                             timeout_usec / 1000000,
 429                             timeout_usec % 1000000);
 430
 431         ZERO_STRUCT(msg);
 432         msg.file_id = fsp->file_id;
 433         msg.open_persistent_id = fsp->op->global->open_persistent_id;
 434         msg.until = timeval_to_nttime(&until);
 435
 436         DEBUG(10, ("smbd: %s mark file %s as disconnected at %s with timeout "
 437                    "at %s in %fs\n",
 438                    server_id_str_buf(self, &tmp),
 439                    file_id_str_buf(fsp->file_id, &idbuf),
 440                    timeval_string(talloc_tos(), &disconnect_time, true),
 441                    timeval_string(talloc_tos(), &until, true),
 442                    fsp->op->global->durable_timeout_msec/1000.0));
 443
 444         SMB_ASSERT(server_id_is_disconnected(&fsp->op->global->server_id));
 445         SMB_ASSERT(!server_id_equal(&self, &smbd_scavenger_state->parent_id));
 446         SMB_ASSERT(!smbd_scavenger_state->am_scavenger);
 447
 448         msg_blob = data_blob_const(&msg, sizeof(msg));
 449         DEBUG(10, ("send message to scavenger\n"));
 450
 451         status = messaging_send(smbd_scavenger_state->msg,
 452                                 smbd_scavenger_state->parent_id,
 453                                 MSG_SMB_SCAVENGER,
 454                                 &msg_blob);
 455         if (!NT_STATUS_IS_OK(status)) {
 456                 struct server_id_buf tmp1, tmp2;
 457                 DEBUG(2, ("Failed to send message to parent smbd %s "
 458                           "from %s: %s\n",
 459                           server_id_str_buf(smbd_scavenger_state->parent_id,
 460                                             &tmp1),
 461                           server_id_str_buf(self, &tmp2),
 462                           nt_errstr(status)));
 463         }
 464 }
 465
 466 struct scavenger_timer_context {
 467         struct smbd_scavenger_state *state;
 468         struct scavenger_message msg;
 469 };
 470
 471 struct cleanup_disconnected_state {
 472         struct file_id fid;
 473         struct share_mode_lock *lck;
 474         uint64_t open_persistent_id;
 475         size_t num_disconnected;
 476         bool found_connected;
 477 };
 478
 479 static bool cleanup_disconnected_lease(struct share_mode_entry *e,
 480                                        void *private_data)
 481 {
 482         struct cleanup_disconnected_state *state = private_data;
 483         NTSTATUS status;
 484
 485         status = leases_db_del(&e->client_guid, &e->lease_key, &state->fid);
 486
 487         if (!NT_STATUS_IS_OK(status)) {
 488                 DBG_DEBUG("leases_db_del failed: %s\n",
 489                           nt_errstr(status));
 490         }
 491
 492         return false;
 493 }
 494
 495 static bool share_mode_find_connected_fn(
 496         struct share_mode_entry *e,
 497         bool *modified,
 498         void *private_data)
 499 {
 500         struct cleanup_disconnected_state *state = private_data;
 501         bool disconnected;
 502
 503         disconnected = server_id_is_disconnected(&e->pid);
 504         if (!disconnected) {
 505                 char *name = share_mode_filename(talloc_tos(), state->lck);
 506                 struct file_id_buf tmp1;
 507                 struct server_id_buf tmp2;
 508                 DBG_INFO("file (file-id='%s', servicepath='%s', name='%s') "
 509                          "is used by server %s ==> do not cleanup\n",
 510                          file_id_str_buf(state->fid, &tmp1),
 511                          share_mode_servicepath(state->lck),
 512                          name,
 513                          server_id_str_buf(e->pid, &tmp2));
 514                 TALLOC_FREE(name);
 515                 state->found_connected = true;
 516                 return true;
 517         }
 518
 519         if (state->open_persistent_id != e->share_file_id) {
 520                 char *name = share_mode_filename(talloc_tos(), state->lck);
 521                 struct file_id_buf tmp;
 522                 DBG_INFO("entry for file "
 523                          "(file-id='%s', servicepath='%s', name='%s') "
 524                          "has share_file_id %"PRIu64" but expected "
 525                          "%"PRIu64"==> do not cleanup\n",
 526                          file_id_str_buf(state->fid, &tmp),
 527                          share_mode_servicepath(state->lck),
 528                          name,
 529                          e->share_file_id,
 530                          state->open_persistent_id);
 531                 TALLOC_FREE(name);
 532                 state->found_connected = true;
 533                 return true;
 534         }
 535
 536         state->num_disconnected += 1;
 537
 538         return false;
 539 }
 540
 541 static bool cleanup_disconnected_share_mode_entry_fn(
 542         struct share_mode_entry *e,
 543         bool *modified,
 544         void *private_data)
 545 {
 546         struct cleanup_disconnected_state *state = private_data;
 547
 548         bool disconnected;
 549
 550         disconnected = server_id_is_disconnected(&e->pid);
 551         if (!disconnected) {
 552                 char *name = share_mode_filename(talloc_tos(), state->lck);
 553                 struct file_id_buf tmp1;
 554                 struct server_id_buf tmp2;
 555                 DBG_ERR("file (file-id='%s', servicepath='%s', name='%s') "
 556                         "is used by server %s ==> internal error\n",
 557                         file_id_str_buf(state->fid, &tmp1),
 558                         share_mode_servicepath(state->lck),
 559                         name,
 560                         server_id_str_buf(e->pid, &tmp2));
 561                 TALLOC_FREE(name);
 562                 smb_panic(__location__);
 563         }
 564
 565         /*
 566          * Setting e->stale = true is
 567          * the indication to delete the entry.
 568          */
 569         e->stale = true;
 570         return false;
 571 }
 572
 573 static bool share_mode_cleanup_disconnected(
 574         struct file_id fid, uint64_t open_persistent_id)
 575 {
 576         struct cleanup_disconnected_state state = {
 577                 .fid = fid,
 578                 .open_persistent_id = open_persistent_id
 579         };
 580         bool ret = false;
 581         TALLOC_CTX *frame = talloc_stackframe();
 582         char *name = NULL;
 583         struct file_id_buf idbuf;
 584         bool ok;
 585
 586         state.lck = get_existing_share_mode_lock(frame, fid);
 587         if (state.lck == NULL) {
 588                 DBG_INFO("Could not fetch share mode entry for %s\n",
 589                          file_id_str_buf(fid, &idbuf));
 590                 goto done;
 591         }
 592         name = share_mode_filename(frame, state.lck);
 593
 594         ok = share_mode_forall_entries(
 595                 state.lck, share_mode_find_connected_fn, &state);
 596         if (!ok) {
 597                 DBG_DEBUG("share_mode_forall_entries failed\n");
 598                 goto done;
 599         }
 600         if (state.found_connected) {
 601                 DBG_DEBUG("Found connected entry\n");
 602                 goto done;
 603         }
 604
 605         ok = share_mode_forall_leases(
 606                 state.lck, cleanup_disconnected_lease, &state);
 607         if (!ok) {
 608                 DBG_DEBUG("failed to clean up leases associated "
 609                           "with file (file-id='%s', servicepath='%s', "
 610                           "name='%s') and open_persistent_id %"PRIu64" "
 611                           "==> do not cleanup\n",
 612                           file_id_str_buf(fid, &idbuf),
 613                           share_mode_servicepath(state.lck),
 614                           name,
 615                           open_persistent_id);
 616                 goto done;
 617         }
 618
 619         ok = brl_cleanup_disconnected(fid, open_persistent_id);
 620         if (!ok) {
 621                 DBG_DEBUG("failed to clean up byte range locks associated "
 622                           "with file (file-id='%s', servicepath='%s', "
 623                           "name='%s') and open_persistent_id %"PRIu64" "
 624                           "==> do not cleanup\n",
 625                           file_id_str_buf(fid, &idbuf),
 626                           share_mode_servicepath(state.lck),
 627                           name,
 628                           open_persistent_id);
 629                 goto done;
 630         }
 631
 632         DBG_DEBUG("cleaning up %zu entries for file "
 633                   "(file-id='%s', servicepath='%s', name='%s') "
 634                   "from open_persistent_id %"PRIu64"\n",
 635                   state.num_disconnected,
 636                   file_id_str_buf(fid, &idbuf),
 637                   share_mode_servicepath(state.lck),
 638                   name,
 639                   open_persistent_id);
 640
 641         ok = share_mode_forall_entries(
 642                 state.lck, cleanup_disconnected_share_mode_entry_fn, &state);
 643         if (!ok) {
 644                 DBG_DEBUG("failed to clean up %zu entries associated "
 645                           "with file (file-id='%s', servicepath='%s', "
 646                           "name='%s') and open_persistent_id %"PRIu64" "
 647                           "==> do not cleanup\n",
 648                           state.num_disconnected,
 649                           file_id_str_buf(fid, &idbuf),
 650                           share_mode_servicepath(state.lck),
 651                           name,
 652                           open_persistent_id);
 653                 goto done;
 654         }
 655
 656         ret = true;
 657 done:
 658         talloc_free(frame);
 659         return ret;
 660 }
 661
 662 static void scavenger_timer(struct tevent_context *ev,
 663                             struct tevent_timer *te,
 664                             struct timeval t, void *data)
 665 {
 666         struct scavenger_timer_context *ctx =
 667                 talloc_get_type_abort(data, struct scavenger_timer_context);
 668         struct file_id_buf idbuf;
 669         NTSTATUS status;
 670         bool ok;
 671
 672         DBG_DEBUG("do cleanup for file %s at %s\n",
 673                   file_id_str_buf(ctx->msg.file_id, &idbuf),
 674                   timeval_string(talloc_tos(), &t, true));
 675
 676         ok = share_mode_cleanup_disconnected(ctx->msg.file_id,
 677                                              ctx->msg.open_persistent_id);
 678         if (!ok) {
 679                 DBG_WARNING("Failed to cleanup share modes and byte range "
 680                             "locks for file %s open %"PRIu64"\n",
 681                             file_id_str_buf(ctx->msg.file_id, &idbuf),
 682                             ctx->msg.open_persistent_id);
 683         }
 684
 685         status = smbXsrv_open_cleanup(ctx->msg.open_persistent_id);
 686         if (!NT_STATUS_IS_OK(status)) {
 687                 DBG_WARNING("Failed to cleanup open global for file %s open "
 688                             "%"PRIu64": %s\n",
 689                             file_id_str_buf(ctx->msg.file_id, &idbuf),
 690                             ctx->msg.open_persistent_id,
 691                             nt_errstr(status));
 692         }
 693 }
 694
 695 static void scavenger_add_timer(struct smbd_scavenger_state *state,
 696                                 struct scavenger_message *msg)
 697 {
 698         struct tevent_timer *te;
 699         struct scavenger_timer_context *ctx;
 700         struct timeval until;
 701         struct file_id_buf idbuf;
 702
 703         nttime_to_timeval(&until, msg->until);
 704
 705         DBG_DEBUG("schedule file %s for cleanup at %s\n",
 706                   file_id_str_buf(msg->file_id, &idbuf),
 707                   timeval_string(talloc_tos(), &until, true));
 708
 709         ctx = talloc_zero(state, struct scavenger_timer_context);
 710         if (ctx == NULL) {
 711                 DEBUG(2, ("Failed to talloc_zero(scavenger_timer_context)\n"));
 712                 return;
 713         }
 714
 715         ctx->state = state;
 716         ctx->msg = *msg;
 717
 718         te = tevent_add_timer(state->ev,
 719                               state,
 720                               until,
 721                               scavenger_timer,
 722                               ctx);
 723         if (te == NULL) {
 724                 DEBUG(2, ("Failed to add scavenger_timer event\n"));
 725                 talloc_free(ctx);
 726                 return;
 727         }
 728
 729         /* delete context after handler was running */
 730         talloc_steal(te, ctx);
 731 }