source3/utils/net_serverid.c

   1 /*
   2    Samba Unix/Linux SMB client library
   3    net serverid commands
   4    Copyright (C) Volker Lendecke 2010
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "includes.h"
  21 #include "utils/net.h"
  22 #include "dbwrap/dbwrap.h"
  23 #include "dbwrap/dbwrap_rbt.h"
  24 #include "serverid.h"
  25 #include "session.h"
  26 #include "lib/conn_tdb.h"
  27 #include "smbd/globals.h"
  28 #include "util_tdb.h"
  29
  30 static int net_serverid_list_fn(const struct server_id *id,
  31                                 uint32_t msg_flags, void *priv)
  32 {
  33         char *str = server_id_str(talloc_tos(), id);
  34         d_printf("%s %llu 0x%x\n", str, (unsigned long long)id->unique_id,
  35                  (unsigned int)msg_flags);
  36         TALLOC_FREE(str);
  37         return 0;
  38 }
  39
  40 static int net_serverid_list(struct net_context *c, int argc,
  41                              const char **argv)
  42 {
  43         d_printf("pid unique_id msg_flags\n");
  44         return serverid_traverse_read(net_serverid_list_fn, NULL) ? 0 : -1;
  45 }
  46
  47 static int net_serverid_wipe_fn(struct db_record *rec,
  48                                 const struct server_id *id,
  49                                 uint32_t msg_flags, void *private_data)
  50 {
  51         NTSTATUS status;
  52
  53         if (id->vnn != get_my_vnn()) {
  54                 return 0;
  55         }
  56         status = dbwrap_record_delete(rec);
  57         if (!NT_STATUS_IS_OK(status)) {
  58                 char *str = server_id_str(talloc_tos(), id);
  59                 DEBUG(1, ("Could not delete serverid.tdb record %s: %s\n",
  60                           str, nt_errstr(status)));
  61                 TALLOC_FREE(str);
  62         }
  63         return 0;
  64 }
  65
  66 static int net_serverid_wipe(struct net_context *c, int argc,
  67                              const char **argv)
  68 {
  69         return serverid_traverse(net_serverid_wipe_fn, NULL) ? 0 : -1;
  70 }
  71
  72
  73 struct wipedbs_record_marker {
  74         struct wipedbs_record_marker *prev, *next;
  75         TDB_DATA key, val;
  76         const char *desc;
  77 };
  78
  79 struct wipedbs_server_data {
  80         struct server_id server_id;
  81         const char *server_id_str;
  82         bool exists;
  83         struct wipedbs_record_marker *session_records;
  84         struct wipedbs_record_marker *tcon_records;
  85         struct wipedbs_record_marker *open_records;
  86 };
  87
  88 struct wipedbs_state {
  89         struct db_context *id2server_data;
  90         struct {
  91                 struct {
  92                         int total;
  93                         int existing;
  94                         int disconnected;
  95                 } server;
  96                 struct {
  97                         int total;
  98                         int disconnected;
  99                         int todelete;
 100                         int failure;
 101                 } session, tcon, open;
 102                 int open_timed_out;
 103         } stat;
 104         struct server_id *server_ids;
 105         bool *server_exists;
 106         int idx;
 107         struct db_context *session_db;
 108         struct db_context *tcon_db;
 109         struct db_context *open_db;
 110         struct timeval now;
 111         bool testmode;
 112         bool verbose;
 113 };
 114
 115 static struct wipedbs_server_data *get_server_data(struct wipedbs_state *state,
 116                                                    const struct server_id *id)
 117 {
 118         struct wipedbs_server_data *ret = NULL;
 119         TDB_DATA key, val = tdb_null;
 120         NTSTATUS status;
 121
 122         key = make_tdb_data((const void*)&id->unique_id, sizeof(id->unique_id));
 123         status = dbwrap_fetch(state->id2server_data, talloc_tos(), key, &val);
 124         if (NT_STATUS_IS_OK(status)) {
 125                 ret = *(struct wipedbs_server_data**) val.dptr;
 126                 TALLOC_FREE(val.dptr);
 127         } else if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
 128                 ret = talloc_zero(state->id2server_data,
 129                                   struct wipedbs_server_data);
 130                 if (ret == NULL) {
 131                         DEBUG(0, ("Failed to allocate server entry for %s\n",
 132                                   server_id_str(talloc_tos(), id)));
 133                         goto done;
 134                 }
 135                 ret->server_id = *id;
 136                 ret->server_id_str = server_id_str(ret, id);
 137                 ret->exists = true;
 138                 val = make_tdb_data((const void*)&ret, sizeof(ret));
 139                 status = dbwrap_store(state->id2server_data,
 140                                       key, val, TDB_INSERT);
 141                 if (!NT_STATUS_IS_OK(status)) {
 142                         DEBUG(0, ("Failed to store server entry for %s: %s\n",
 143                                   server_id_str(talloc_tos(), id),
 144                                   nt_errstr(status)));
 145                 }
 146                 goto done;
 147         } else {
 148                 DEBUG(0, ("Failed to fetch server entry for %s: %s\n",
 149                           server_id_str(talloc_tos(), id), nt_errstr(status)));
 150                 goto done;
 151         }
 152         if (!server_id_equal(id, &ret->server_id)) {
 153                 DEBUG(0, ("uniq id collision for %s and %s\n",
 154                           server_id_str(talloc_tos(), id),
 155                           server_id_str(talloc_tos(), &ret->server_id)));
 156                 smb_panic("server_id->unique_id not unique!");
 157         }
 158 done:
 159         return ret;
 160 }
 161
 162 static int wipedbs_traverse_sessions(struct smbXsrv_session_global0 *session,
 163                                      void *wipedbs_state)
 164 {
 165         struct wipedbs_state *state =
 166                 talloc_get_type_abort(wipedbs_state,
 167                 struct wipedbs_state);
 168         struct wipedbs_server_data *sd;
 169         struct wipedbs_record_marker *rec;
 170         TDB_DATA tmp;
 171         int ret = -1;
 172
 173         assert(session->num_channels == 1);
 174
 175         state->stat.session.total++;
 176
 177         sd = get_server_data(state, &session->channels[0].server_id);
 178         if (sd == NULL) {
 179                 goto done;
 180         }
 181
 182         if (server_id_is_disconnected(&sd->server_id)) {
 183                 state->stat.session.disconnected++;
 184         }
 185
 186         rec = talloc_zero(sd, struct wipedbs_record_marker);
 187         if (rec == NULL) {
 188                 DEBUG(0, ("Out of memory!\n"));
 189                 goto done;
 190         }
 191
 192         tmp = dbwrap_record_get_key(session->db_rec);
 193         rec->key = tdb_data_talloc_copy(rec, tmp);
 194         tmp = dbwrap_record_get_value(session->db_rec);
 195         rec->val = tdb_data_talloc_copy(rec, tmp);
 196
 197         rec->desc = talloc_asprintf(
 198                 rec, "session[global: %u wire: %lu]",
 199                 session->session_global_id, session->session_wire_id);
 200
 201         if ((rec->key.dptr == NULL) || (rec->val.dptr == NULL) ||
 202             (rec->desc == NULL))
 203         {
 204                 DEBUG(0, ("Out of memory!\n"));
 205                 goto done;
 206         }
 207
 208         state->session_db = dbwrap_record_get_db(session->db_rec);
 209
 210         DLIST_ADD(sd->session_records, rec);
 211         ret = 0;
 212 done:
 213         return ret;
 214 }
 215
 216 static int wipedbs_traverse_tcon(struct smbXsrv_tcon_global0 *tcon,
 217                                  void *wipedbs_state)
 218 {
 219         struct wipedbs_state *state =
 220                 talloc_get_type_abort(wipedbs_state,
 221                 struct wipedbs_state);
 222         struct wipedbs_server_data *sd;
 223         struct wipedbs_record_marker *rec;
 224         TDB_DATA tmp;
 225         int ret = -1;
 226
 227         state->stat.tcon.total++;
 228
 229         sd = get_server_data(state, &tcon->server_id);
 230         if (sd == NULL) {
 231                 goto done;
 232         }
 233
 234         if (server_id_is_disconnected(&sd->server_id)) {
 235                 state->stat.tcon.disconnected++;
 236         }
 237
 238         rec = talloc_zero(sd, struct wipedbs_record_marker);
 239         if (rec == NULL) {
 240                 DEBUG(0, ("Out of memory!\n"));
 241                 goto done;
 242         }
 243
 244         tmp = dbwrap_record_get_key(tcon->db_rec);
 245         rec->key = tdb_data_talloc_copy(rec, tmp);
 246         tmp = dbwrap_record_get_value(tcon->db_rec);
 247         rec->val = tdb_data_talloc_copy(rec, tmp);
 248
 249         rec->desc = talloc_asprintf(
 250                 rec, "tcon[global: %u wire: %u session: %u share: %s]",
 251                 tcon->tcon_global_id, tcon->tcon_wire_id,
 252                 tcon->session_global_id, tcon->share_name);
 253
 254         if ((rec->key.dptr == NULL) || (rec->val.dptr == NULL) ||
 255             (rec->desc == NULL))
 256         {
 257                 DEBUG(0, ("Out of memory!\n"));
 258                 goto done;
 259         }
 260
 261         state->tcon_db = dbwrap_record_get_db(tcon->db_rec);
 262
 263         DLIST_ADD(sd->tcon_records, rec);
 264         ret = 0;
 265
 266 done:
 267         return ret;
 268 }
 269
 270 static int wipedbs_traverse_open(struct smbXsrv_open_global0 *open,
 271                                  void *wipedbs_state)
 272 {
 273         struct wipedbs_state *state =
 274                 talloc_get_type_abort(wipedbs_state,
 275                 struct wipedbs_state);
 276         struct wipedbs_server_data *sd;
 277         struct wipedbs_record_marker *rec;
 278         TDB_DATA tmp;
 279         int ret = -1;
 280
 281         state->stat.open.total++;
 282
 283         sd = get_server_data(state, &open->server_id);
 284         if (sd == NULL) {
 285                 goto done;
 286         }
 287
 288         if (server_id_is_disconnected(&sd->server_id)) {
 289                 struct timeval disconnect_time;
 290                 int64_t tdiff;
 291                 bool reached;
 292
 293                 state->stat.open.disconnected++;
 294
 295                 nttime_to_timeval(&disconnect_time, open->disconnect_time);
 296                 tdiff = usec_time_diff(&state->now, &disconnect_time);
 297                 reached = (tdiff >= 1000*open->durable_timeout_msec);
 298
 299                 if (state->verbose) {
 300                         TALLOC_CTX *mem_ctx = talloc_new(talloc_tos());
 301                         d_printf("open[global: %u] disconnected at "
 302                                  "[%s] %us ago with timeout of %us "
 303                                  "-%s reached\n",
 304                                  open->open_global_id,
 305                                  nt_time_string(mem_ctx, open->disconnect_time),
 306                                  (unsigned)(tdiff/1000000),
 307                                  open->durable_timeout_msec / 1000,
 308                                  reached ? "" : " not");
 309                         talloc_free(mem_ctx);
 310                 }
 311
 312                 if (!reached) {
 313                         ret = 0;
 314                         goto done;
 315                 }
 316                 state->stat.open_timed_out++;
 317         }
 318
 319         rec = talloc_zero(sd, struct wipedbs_record_marker);
 320         if (rec == NULL) {
 321                 DEBUG(0, ("Out of memory!\n"));
 322                 goto done;
 323         }
 324
 325         tmp = dbwrap_record_get_key(open->db_rec);
 326         rec->key = tdb_data_talloc_copy(rec, tmp);
 327         tmp = dbwrap_record_get_value(open->db_rec);
 328         rec->val = tdb_data_talloc_copy(rec, tmp);
 329
 330         rec->desc = talloc_asprintf(
 331                 rec, "open[global: %u persistent: %lu volatile: %lu]",
 332                 open->open_global_id, open->open_persistent_id,
 333                 open->open_volatile_id);
 334
 335         if ((rec->key.dptr == NULL) || (rec->val.dptr == NULL) ||
 336             (rec->desc == NULL))
 337         {
 338                 DEBUG(0, ("Out of memory!\n"));
 339                 goto done;
 340         }
 341
 342         state->open_db = dbwrap_record_get_db(open->db_rec);
 343
 344         DLIST_ADD(sd->open_records, rec);
 345         ret = 0;
 346
 347 done:
 348         return ret;
 349 }
 350
 351 static int wipedbs_traverse_nop(struct db_record *rec, void *private_data)
 352 {
 353         return 0;
 354 }
 355
 356 static int wipedbs_traverse_fill_ids(struct db_record *rec, void *wipedbs_state)
 357 {
 358         struct wipedbs_state *state = talloc_get_type_abort(
 359                 wipedbs_state, struct wipedbs_state);
 360
 361         TDB_DATA val = dbwrap_record_get_value(rec);
 362
 363         struct wipedbs_server_data *sd = talloc_get_type_abort(
 364                 *(void**)val.dptr, struct wipedbs_server_data);
 365
 366         state->server_ids[state->idx] = sd->server_id;
 367         state->idx++;
 368         return 0;
 369 }
 370
 371 static int wipedbs_traverse_set_exists(struct db_record *rec,
 372                                        void *wipedbs_state)
 373 {
 374         struct wipedbs_state *state = talloc_get_type_abort(
 375                 wipedbs_state, struct wipedbs_state);
 376
 377         TDB_DATA val = dbwrap_record_get_value(rec);
 378
 379         struct wipedbs_server_data *sd = talloc_get_type_abort(
 380                 *(void**)val.dptr, struct wipedbs_server_data);
 381
 382         /* assume a stable traverse order for rbt */
 383         SMB_ASSERT(server_id_equal(&state->server_ids[state->idx],
 384                                    &sd->server_id));
 385         sd->exists = state->server_exists[state->idx];
 386
 387         if (sd->exists) {
 388                 state->stat.server.existing++;
 389         }
 390         if (server_id_is_disconnected(&sd->server_id)) {
 391                 state->stat.server.disconnected++;
 392         }
 393
 394         state->idx++;
 395         return 0;
 396 }
 397
 398 static NTSTATUS wipedbs_check_server_exists(struct wipedbs_state *state)
 399 {
 400         NTSTATUS status;
 401         bool ok;
 402         int num_servers;
 403
 404         status = dbwrap_traverse_read(state->id2server_data,
 405                                       wipedbs_traverse_nop, NULL, &num_servers);
 406         if (!NT_STATUS_IS_OK(status)) {
 407                 DEBUG(0, ("Failed to traverse temporary database\n"));
 408                 goto done;
 409         }
 410         state->stat.server.total = num_servers;
 411
 412         state->server_ids = talloc_array(state, struct server_id, num_servers);
 413         state->server_exists = talloc_array(state, bool, num_servers);
 414         if (state->server_ids == NULL || state->server_exists == NULL) {
 415                 DEBUG(0, ("Out of memory\n"));
 416                 goto done;
 417         }
 418
 419         state->idx = 0;
 420         status = dbwrap_traverse_read(state->id2server_data,
 421                                       wipedbs_traverse_fill_ids,
 422                                       state, NULL);
 423         if (!NT_STATUS_IS_OK(status)) {
 424                 DEBUG(0, ("Failed to traverse temporary database\n"));
 425                 goto done;
 426         }
 427
 428         ok = serverids_exist(state->server_ids, num_servers, state->server_exists);
 429         if (!ok) {
 430                 DEBUG(0, ("Calling serverids_exist failed\n"));
 431                 status = NT_STATUS_UNSUCCESSFUL;
 432                 goto done;
 433         }
 434
 435         state->idx = 0;
 436         status = dbwrap_traverse_read(state->id2server_data,
 437                                       wipedbs_traverse_set_exists, state, NULL);
 438         if (!NT_STATUS_IS_OK(status)) {
 439                 DEBUG(0, ("Failed to traverse temporary database\n"));
 440                 goto done;
 441         }
 442 done:
 443         TALLOC_FREE(state->server_ids);
 444         TALLOC_FREE(state->server_exists);
 445         return status;
 446 }
 447
 448 static int wipedbs_delete_records(struct db_context *db,
 449                                   struct wipedbs_record_marker *records,
 450                                   bool dry_run, bool verbose, int *count)
 451 {
 452         struct wipedbs_record_marker *cur;
 453         struct db_record *rec;
 454         TDB_DATA val;
 455         NTSTATUS status;
 456         unsigned num=0, total=0;
 457
 458         if (db == NULL) {
 459                 return 0;
 460         }
 461
 462         for (cur = records; cur != NULL; cur = cur->next) {
 463                 total++;
 464                 rec = dbwrap_fetch_locked(db, talloc_tos(), cur->key);
 465                 if (rec == NULL) {
 466                         DEBUG(0, ("Failed to fetch record <%s> from %s",
 467                                   cur->desc, dbwrap_name(db)));
 468                         continue;
 469                 }
 470                 val = dbwrap_record_get_value(rec);
 471                 if (tdb_data_equal(val, cur->val)) {
 472                         if (dry_run) {
 473                                 status = NT_STATUS_OK;
 474                         } else {
 475                                 status = dbwrap_record_delete(rec);
 476                         }
 477                         if (NT_STATUS_IS_OK(status)) {
 478                                 num ++;
 479                         } else {
 480                                 DEBUG(0, ("Failed to delete record <%s> from %s"
 481                                           ": %s\n", cur->desc, dbwrap_name(db),
 482                                           nt_errstr(status)));
 483                         }
 484                 } else {
 485                         DEBUG(0, ("Warning: record <%s> from %s changed"
 486                                   ", skip record!\n",
 487                                   cur->desc, dbwrap_name(db)));
 488                 }
 489                 if (verbose) {
 490                         d_printf("deleting %s\n", cur->desc);
 491                 }
 492                 TALLOC_FREE(rec);
 493         }
 494
 495         if (verbose) {
 496                 d_printf("Deleted %u of %u records from %s\n",
 497                          num, total, dbwrap_name(db));
 498         }
 499
 500         if (count) {
 501                 *count += total;
 502         }
 503
 504         return total - num;
 505 }
 506
 507 static int wipedbs_traverse_server_data(struct db_record *rec,
 508                                         void *wipedbs_state)
 509 {
 510         struct wipedbs_state *state = talloc_get_type_abort(
 511                 wipedbs_state, struct wipedbs_state);
 512         bool dry_run = state->testmode;
 513         TDB_DATA val = dbwrap_record_get_value(rec);
 514         int ret;
 515         struct wipedbs_server_data *sd = talloc_get_type_abort(
 516                 *(void**)val.dptr, struct wipedbs_server_data);
 517
 518         if (state->verbose) {
 519                 d_printf("Server: '%s' %s\n", sd->server_id_str,
 520                          sd->exists ?
 521                          "exists" :
 522                          "does not exist, cleaning up...");
 523         }
 524
 525         if (sd->exists) {
 526                 return 0;
 527         }
 528
 529         ret = wipedbs_delete_records(state->session_db, sd->session_records,
 530                                      dry_run, state->verbose,
 531                                      &state->stat.session.todelete);
 532         state->stat.session.failure += ret;
 533
 534         ret = wipedbs_delete_records(state->tcon_db, sd->tcon_records,
 535                                      dry_run, state->verbose,
 536                                      &state->stat.tcon.todelete);
 537         state->stat.tcon.failure += ret;
 538
 539         ret = wipedbs_delete_records(state->open_db, sd->open_records,
 540                                      dry_run, state->verbose,
 541                                      &state->stat.open.todelete);
 542         state->stat.open.failure += ret;
 543
 544         return 0;
 545 }
 546
 547 static int net_serverid_wipedbs(struct net_context *c, int argc,
 548                                 const char **argv)
 549 {
 550         int ret = -1;
 551         NTSTATUS status;
 552         struct wipedbs_state *state = talloc_zero(talloc_tos(),
 553                                                   struct wipedbs_state);
 554
 555         if (c->display_usage) {
 556                 d_printf("%s\n%s",
 557                          _("Usage:"),
 558                          _("net serverid wipedbs [--test] [--verbose]\n"));
 559                 d_printf("%s\n%s",
 560                          _("Example:"),
 561                          _("net serverid wipedbs -v\n"));
 562                 return -1;
 563         }
 564
 565         state->now = timeval_current();
 566         state->testmode = c->opt_testmode;
 567         state->verbose = c->opt_verbose;
 568
 569         state->id2server_data = db_open_rbt(state);
 570         if (state->id2server_data == NULL) {
 571                 DEBUG(0, ("Failed to open temporary database\n"));
 572                 goto done;
 573         }
 574
 575         status = smbXsrv_session_global_traverse(wipedbs_traverse_sessions,
 576                                                  state);
 577         if (!NT_STATUS_IS_OK(status)) {
 578                 goto done;
 579         }
 580
 581         status = smbXsrv_tcon_global_traverse(wipedbs_traverse_tcon, state);
 582         if (!NT_STATUS_IS_OK(status)) {
 583                 goto done;
 584         }
 585
 586         status = smbXsrv_open_global_traverse(wipedbs_traverse_open, state);
 587         if (!NT_STATUS_IS_OK(status)) {
 588                 goto done;
 589         }
 590
 591         status = wipedbs_check_server_exists(state);
 592         if (!NT_STATUS_IS_OK(status)) {
 593                 goto done;
 594         }
 595
 596         status = dbwrap_traverse_read(state->id2server_data,
 597                                       wipedbs_traverse_server_data,
 598                                       state, NULL);
 599         if (!NT_STATUS_IS_OK(status)) {
 600                 DEBUG(0, ("Failed to traverse db: %s\n", nt_errstr(status)));
 601                 goto done;
 602         }
 603
 604         d_printf("Found %d serverids, %d alive and %d disconnected\n",
 605                  state->stat.server.total,
 606                  state->stat.server.existing,
 607                  state->stat.server.disconnected);
 608         d_printf("Found %d sessions, %d alive and %d disconnected"
 609                  ", cleaned up %d of %d entries\n",
 610                  state->stat.session.total,
 611                  state->stat.session.total - state->stat.session.todelete,
 612                  state->stat.session.disconnected,
 613                  state->stat.session.todelete - state->stat.session.failure,
 614                  state->stat.session.todelete);
 615         d_printf("Found %d tcons, %d alive and %d disconnected"
 616                  ", cleaned up %d of %d entries\n",
 617                  state->stat.tcon.total,
 618                  state->stat.tcon.total - state->stat.tcon.todelete,
 619                  state->stat.tcon.disconnected,
 620                  state->stat.tcon.todelete - state->stat.tcon.failure,
 621                  state->stat.tcon.todelete);
 622         d_printf("Found %d opens, %d alive, %d disconnected and %d timed out"
 623                  ", cleaned up %d of %d entries\n",
 624                  state->stat.open.total,
 625                  state->stat.open.total - state->stat.open.todelete
 626                  - (state->stat.open.disconnected - state->stat.open_timed_out),
 627                  state->stat.open.disconnected,
 628                  state->stat.open_timed_out,
 629                  state->stat.open.todelete - state->stat.open.failure,
 630                  state->stat.open.todelete);
 631
 632         ret = 0;
 633 done:
 634         talloc_free(state);
 635         return ret;
 636 }
 637
 638 int net_serverid(struct net_context *c, int argc, const char **argv)
 639 {
 640         struct functable func[] = {
 641                 {
 642                         "list",
 643                         net_serverid_list,
 644                         NET_TRANSPORT_LOCAL,
 645                         N_("List all entries from serverid.tdb"),
 646                         N_("net serverid list\n"
 647                            "    List all entries from serverid.tdb")
 648                 },
 649                 {
 650                         "wipe",
 651                         net_serverid_wipe,
 652                         NET_TRANSPORT_LOCAL,
 653                         N_("Wipe the serverid.tdb for the current node"),
 654                         N_("net serverid wipe\n"
 655                            "    Wipe the serverid.tdb for the current node")
 656                 },
 657                 {
 658                         "wipedbs",
 659                         net_serverid_wipedbs,
 660                         NET_TRANSPORT_LOCAL,
 661                         N_("Clean dead entries from temporary databases"),
 662                         N_("net serverid wipedbs\n"
 663                            "    Clean dead entries from temporary databases")
 664                 },
 665                 {NULL, NULL, 0, NULL, NULL}
 666         };
 667
 668         return net_run_function(c, argc, argv, "net serverid", func);
 669 }