server/ctdb_control.c

   1 /*
   2    ctdb_control protocol code
   3
   4    Copyright (C) Andrew Tridgell  2007
   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 #include "includes.h"
  20 #include "lib/events/events.h"
  21 #include "lib/tdb/include/tdb.h"
  22 #include "system/network.h"
  23 #include "system/filesys.h"
  24 #include "system/wait.h"
  25 #include "../include/ctdb_private.h"
  26 #include "lib/util/dlinklist.h"
  27 #include "db_wrap.h"
  28
  29
  30 struct ctdb_control_state {
  31         struct ctdb_context *ctdb;
  32         uint32_t reqid;
  33         ctdb_control_callback_fn_t callback;
  34         void *private_data;
  35         unsigned flags;
  36 };
  37
  38
  39 /*
  40   dump talloc memory hierarchy, returning it as a blob to the client
  41  */
  42 int32_t ctdb_dump_memory(struct ctdb_context *ctdb, TDB_DATA *outdata)
  43 {
  44         /* dump to a file, then send the file as a blob */
  45         FILE *f;
  46         long fsize;
  47         f = tmpfile();
  48         if (f == NULL) {
  49                 DEBUG(DEBUG_ERR,(__location__ " Unable to open tmpfile - %s\n", strerror(errno)));
  50                 return -1;
  51         }
  52         talloc_report_full(NULL, f);
  53         fsize = ftell(f);
  54         rewind(f);
  55         outdata->dptr = talloc_size(outdata, fsize);
  56         CTDB_NO_MEMORY(ctdb, outdata->dptr);
  57         outdata->dsize = fread(outdata->dptr, 1, fsize, f);
  58         fclose(f);
  59         if (outdata->dsize != fsize) {
  60                 DEBUG(DEBUG_ERR,(__location__ " Unable to read tmpfile\n"));
  61                 return -1;
  62         }
  63         return 0;
  64 }
  65
  66
  67 /*
  68   process a control request
  69  */
  70 static int32_t ctdb_control_dispatch(struct ctdb_context *ctdb,
  71                                      struct ctdb_req_control *c,
  72                                      TDB_DATA indata,
  73                                      TDB_DATA *outdata, uint32_t srcnode,
  74                                      const char **errormsg,
  75                                      bool *async_reply)
  76 {
  77         uint32_t opcode = c->opcode;
  78         uint64_t srvid = c->srvid;
  79         uint32_t client_id = c->client_id;
  80
  81         switch (opcode) {
  82         case CTDB_CONTROL_PROCESS_EXISTS: {
  83                 CHECK_CONTROL_DATA_SIZE(sizeof(pid_t));
  84                 return kill(*(pid_t *)indata.dptr, 0);
  85         }
  86
  87         case CTDB_CONTROL_SET_DEBUG: {
  88                 CHECK_CONTROL_DATA_SIZE(sizeof(int32_t));
  89                 LogLevel = *(int32_t *)indata.dptr;
  90                 return 0;
  91         }
  92
  93         case CTDB_CONTROL_GET_DEBUG: {
  94                 CHECK_CONTROL_DATA_SIZE(0);
  95                 outdata->dptr = (uint8_t *)&LogLevel;
  96                 outdata->dsize = sizeof(LogLevel);
  97                 return 0;
  98         }
  99
 100         case CTDB_CONTROL_STATISTICS: {
 101                 CHECK_CONTROL_DATA_SIZE(0);
 102                 ctdb->statistics.memory_used = talloc_total_size(NULL);
 103                 ctdb->statistics.frozen = (ctdb->freeze_mode == CTDB_FREEZE_FROZEN);
 104                 ctdb->statistics.recovering = (ctdb->recovery_mode == CTDB_RECOVERY_ACTIVE);
 105                 outdata->dptr = (uint8_t *)&ctdb->statistics;
 106                 outdata->dsize = sizeof(ctdb->statistics);
 107                 return 0;
 108         }
 109
 110         case CTDB_CONTROL_GET_ALL_TUNABLES: {
 111                 CHECK_CONTROL_DATA_SIZE(0);
 112                 outdata->dptr = (uint8_t *)&ctdb->tunable;
 113                 outdata->dsize = sizeof(ctdb->tunable);
 114                 return 0;
 115         }
 116
 117         case CTDB_CONTROL_DUMP_MEMORY: {
 118                 CHECK_CONTROL_DATA_SIZE(0);
 119                 return ctdb_dump_memory(ctdb, outdata);
 120         }
 121
 122         case CTDB_CONTROL_STATISTICS_RESET: {
 123                 CHECK_CONTROL_DATA_SIZE(0);
 124                 ZERO_STRUCT(ctdb->statistics);
 125                 return 0;
 126         }
 127
 128         case CTDB_CONTROL_GETVNNMAP:
 129                 return ctdb_control_getvnnmap(ctdb, opcode, indata, outdata);
 130
 131         case CTDB_CONTROL_GET_DBMAP:
 132                 return ctdb_control_getdbmap(ctdb, opcode, indata, outdata);
 133
 134         case CTDB_CONTROL_GET_NODEMAP:
 135                 return ctdb_control_getnodemap(ctdb, opcode, indata, outdata);
 136
 137         case CTDB_CONTROL_RELOAD_NODES_FILE:
 138                 CHECK_CONTROL_DATA_SIZE(0);
 139                 return ctdb_control_reload_nodes_file(ctdb, opcode);
 140
 141         case CTDB_CONTROL_SETVNNMAP:
 142                 return ctdb_control_setvnnmap(ctdb, opcode, indata, outdata);
 143
 144         case CTDB_CONTROL_PULL_DB:
 145                 CHECK_CONTROL_DATA_SIZE(sizeof(struct ctdb_control_pulldb));
 146                 return ctdb_control_pull_db(ctdb, indata, outdata);
 147
 148         case CTDB_CONTROL_SET_DMASTER:
 149                 CHECK_CONTROL_DATA_SIZE(sizeof(struct ctdb_control_set_dmaster));
 150                 return ctdb_control_set_dmaster(ctdb, indata);
 151
 152         case CTDB_CONTROL_PUSH_DB:
 153                 return ctdb_control_push_db(ctdb, indata);
 154
 155         case CTDB_CONTROL_GET_RECMODE: {
 156                 return ctdb->recovery_mode;
 157         }
 158
 159         case CTDB_CONTROL_SET_RECMASTER: {
 160                 CHECK_CONTROL_DATA_SIZE(sizeof(uint32_t));
 161                 if (ctdb->freeze_mode != CTDB_FREEZE_FROZEN) {
 162                         DEBUG(DEBUG_NOTICE,("Attempt to set recmaster when not frozen\n"));
 163                         return -1;
 164                 }
 165                 ctdb->recovery_master = ((uint32_t *)(&indata.dptr[0]))[0];
 166                 return 0;
 167         }
 168
 169         case CTDB_CONTROL_GET_RECMASTER:
 170                 return ctdb->recovery_master;
 171
 172         case CTDB_CONTROL_GET_PID:
 173                 return getpid();
 174
 175         case CTDB_CONTROL_GET_PNN:
 176                 return ctdb->pnn;
 177
 178         case CTDB_CONTROL_PING:
 179                 CHECK_CONTROL_DATA_SIZE(0);
 180                 return ctdb->statistics.num_clients;
 181
 182         case CTDB_CONTROL_GET_DBNAME: {
 183                 uint32_t db_id;
 184                 struct ctdb_db_context *ctdb_db;
 185
 186                 CHECK_CONTROL_DATA_SIZE(sizeof(db_id));
 187                 db_id = *(uint32_t *)indata.dptr;
 188                 ctdb_db = find_ctdb_db(ctdb, db_id);
 189                 if (ctdb_db == NULL) return -1;
 190                 outdata->dptr = discard_const(ctdb_db->db_name);
 191                 outdata->dsize = strlen(ctdb_db->db_name)+1;
 192                 return 0;
 193         }
 194
 195         case CTDB_CONTROL_GETDBPATH: {
 196                 uint32_t db_id;
 197                 struct ctdb_db_context *ctdb_db;
 198
 199                 CHECK_CONTROL_DATA_SIZE(sizeof(db_id));
 200                 db_id = *(uint32_t *)indata.dptr;
 201                 ctdb_db = find_ctdb_db(ctdb, db_id);
 202                 if (ctdb_db == NULL) return -1;
 203                 outdata->dptr = discard_const(ctdb_db->db_path);
 204                 outdata->dsize = strlen(ctdb_db->db_path)+1;
 205                 return 0;
 206         }
 207
 208         case CTDB_CONTROL_DB_ATTACH:
 209                 return ctdb_control_db_attach(ctdb, indata, outdata, false);
 210
 211         case CTDB_CONTROL_DB_ATTACH_PERSISTENT:
 212                 return ctdb_control_db_attach(ctdb, indata, outdata, true);
 213
 214         case CTDB_CONTROL_SET_CALL: {
 215                 struct ctdb_control_set_call *sc =
 216                         (struct ctdb_control_set_call *)indata.dptr;
 217                 CHECK_CONTROL_DATA_SIZE(sizeof(struct ctdb_control_set_call));
 218                 return ctdb_daemon_set_call(ctdb, sc->db_id, sc->fn, sc->id);
 219         }
 220
 221         case CTDB_CONTROL_TRAVERSE_START:
 222                 CHECK_CONTROL_DATA_SIZE(sizeof(struct ctdb_traverse_start));
 223                 return ctdb_control_traverse_start(ctdb, indata, outdata, srcnode);
 224
 225         case CTDB_CONTROL_TRAVERSE_ALL:
 226                 return ctdb_control_traverse_all(ctdb, indata, outdata);
 227
 228         case CTDB_CONTROL_TRAVERSE_DATA:
 229                 return ctdb_control_traverse_data(ctdb, indata, outdata);
 230
 231         case CTDB_CONTROL_REGISTER_SRVID:
 232                 return daemon_register_message_handler(ctdb, client_id, srvid);
 233
 234         case CTDB_CONTROL_DEREGISTER_SRVID:
 235                 return daemon_deregister_message_handler(ctdb, client_id, srvid);
 236
 237         case CTDB_CONTROL_ENABLE_SEQNUM:
 238                 CHECK_CONTROL_DATA_SIZE(sizeof(uint32_t));
 239                 return ctdb_ltdb_enable_seqnum(ctdb, *(uint32_t *)indata.dptr);
 240
 241         case CTDB_CONTROL_UPDATE_SEQNUM:
 242                 CHECK_CONTROL_DATA_SIZE(sizeof(uint32_t));
 243                 return ctdb_ltdb_update_seqnum(ctdb, *(uint32_t *)indata.dptr, srcnode);
 244
 245         case CTDB_CONTROL_FREEZE:
 246                 CHECK_CONTROL_DATA_SIZE(0);
 247                 return ctdb_control_freeze(ctdb, c, async_reply);
 248
 249         case CTDB_CONTROL_THAW:
 250                 CHECK_CONTROL_DATA_SIZE(0);
 251                 return ctdb_control_thaw(ctdb);
 252
 253         case CTDB_CONTROL_SET_RECMODE:
 254                 CHECK_CONTROL_DATA_SIZE(sizeof(uint32_t));
 255                 return ctdb_control_set_recmode(ctdb, c, indata, async_reply, errormsg);
 256
 257         case CTDB_CONTROL_GET_MONMODE:
 258                 CHECK_CONTROL_DATA_SIZE(0);
 259                 return ctdb_monitoring_mode(ctdb);
 260
 261         case CTDB_CONTROL_ENABLE_MONITOR:
 262                 CHECK_CONTROL_DATA_SIZE(0);
 263                 ctdb_enable_monitoring(ctdb);
 264                 return 0;
 265
 266         case CTDB_CONTROL_RUN_EVENTSCRIPTS:
 267                 return ctdb_run_eventscripts(ctdb, c, indata, async_reply);
 268
 269         case CTDB_CONTROL_DISABLE_MONITOR:
 270                 CHECK_CONTROL_DATA_SIZE(0);
 271                 ctdb_disable_monitoring(ctdb);
 272                 return 0;
 273
 274         case CTDB_CONTROL_SHUTDOWN:
 275                 ctdb_stop_recoverd(ctdb);
 276                 ctdb_stop_keepalive(ctdb);
 277                 ctdb_stop_monitoring(ctdb);
 278                 ctdb_release_all_ips(ctdb);
 279                 ctdb->methods->shutdown(ctdb);
 280                 ctdb_event_script(ctdb, "shutdown");
 281                 DEBUG(DEBUG_NOTICE,("Received SHUTDOWN command. Stopping CTDB daemon.\n"));
 282                 exit(0);
 283
 284         case CTDB_CONTROL_TAKEOVER_IP:
 285                 CHECK_CONTROL_DATA_SIZE(sizeof(struct ctdb_public_ip));
 286                 return ctdb_control_takeover_ip(ctdb, c, indata, async_reply);
 287
 288         case CTDB_CONTROL_RELEASE_IP:
 289                 CHECK_CONTROL_DATA_SIZE(sizeof(struct ctdb_public_ip));
 290                 return ctdb_control_release_ip(ctdb, c, indata, async_reply);
 291
 292         case CTDB_CONTROL_GET_PUBLIC_IPS:
 293                 CHECK_CONTROL_DATA_SIZE(0);
 294                 return ctdb_control_get_public_ips(ctdb, c, outdata);
 295
 296         case CTDB_CONTROL_TCP_CLIENT:
 297                 CHECK_CONTROL_DATA_SIZE(sizeof(struct ctdb_control_tcp));
 298                 return ctdb_control_tcp_client(ctdb, client_id, indata);
 299
 300         case CTDB_CONTROL_STARTUP:
 301                 CHECK_CONTROL_DATA_SIZE(0);
 302                 return ctdb_control_startup(ctdb, srcnode);
 303
 304         case CTDB_CONTROL_TCP_ADD:
 305                 CHECK_CONTROL_DATA_SIZE(sizeof(struct ctdb_control_tcp_vnn));
 306                 return ctdb_control_tcp_add(ctdb, indata);
 307
 308         case CTDB_CONTROL_SET_TUNABLE:
 309                 return ctdb_control_set_tunable(ctdb, indata);
 310
 311         case CTDB_CONTROL_GET_TUNABLE:
 312                 return ctdb_control_get_tunable(ctdb, indata, outdata);
 313
 314         case CTDB_CONTROL_LIST_TUNABLES:
 315                 return ctdb_control_list_tunables(ctdb, outdata);
 316
 317         case CTDB_CONTROL_MODIFY_FLAGS:
 318                 CHECK_CONTROL_DATA_SIZE(sizeof(struct ctdb_node_modflags));
 319                 return ctdb_control_modflags(ctdb, indata);
 320
 321         case CTDB_CONTROL_KILL_TCP:
 322                 CHECK_CONTROL_DATA_SIZE(sizeof(struct ctdb_control_killtcp));
 323                 return ctdb_control_kill_tcp(ctdb, indata);
 324
 325         case CTDB_CONTROL_GET_TCP_TICKLE_LIST:
 326                 CHECK_CONTROL_DATA_SIZE(sizeof(struct sockaddr_in));
 327                 return ctdb_control_get_tcp_tickle_list(ctdb, indata, outdata);
 328
 329         case CTDB_CONTROL_SET_TCP_TICKLE_LIST:
 330                 /* data size is verified in the called function */
 331                 return ctdb_control_set_tcp_tickle_list(ctdb, indata);
 332
 333         case CTDB_CONTROL_REGISTER_SERVER_ID:
 334                 CHECK_CONTROL_DATA_SIZE(sizeof(struct ctdb_server_id));
 335                 return ctdb_control_register_server_id(ctdb, client_id, indata);
 336
 337         case CTDB_CONTROL_UNREGISTER_SERVER_ID:
 338                 CHECK_CONTROL_DATA_SIZE(sizeof(struct ctdb_server_id));
 339                 return ctdb_control_unregister_server_id(ctdb, indata);
 340
 341         case CTDB_CONTROL_CHECK_SERVER_ID:
 342                 CHECK_CONTROL_DATA_SIZE(sizeof(struct ctdb_server_id));
 343                 return ctdb_control_check_server_id(ctdb, indata);
 344
 345         case CTDB_CONTROL_GET_SERVER_ID_LIST:
 346                 CHECK_CONTROL_DATA_SIZE(0);
 347                 return ctdb_control_get_server_id_list(ctdb, outdata);
 348
 349         case CTDB_CONTROL_PERSISTENT_STORE:
 350                 return ctdb_control_persistent_store(ctdb, c, indata, async_reply);
 351
 352         case CTDB_CONTROL_UPDATE_RECORD:
 353                 return ctdb_control_update_record(ctdb, c, indata, async_reply);
 354
 355         case CTDB_CONTROL_SEND_GRATIOUS_ARP:
 356                 return ctdb_control_send_gratious_arp(ctdb, indata);
 357
 358         case CTDB_CONTROL_TRANSACTION_START:
 359                 CHECK_CONTROL_DATA_SIZE(sizeof(uint32_t));
 360                 return ctdb_control_transaction_start(ctdb, *(uint32_t *)indata.dptr);
 361
 362         case CTDB_CONTROL_TRANSACTION_COMMIT:
 363                 CHECK_CONTROL_DATA_SIZE(sizeof(uint32_t));
 364                 return ctdb_control_transaction_commit(ctdb, *(uint32_t *)indata.dptr);
 365
 366         case CTDB_CONTROL_WIPE_DATABASE:
 367                 CHECK_CONTROL_DATA_SIZE(sizeof(struct ctdb_control_wipe_database));
 368                 return ctdb_control_wipe_database(ctdb, indata);
 369
 370         case CTDB_CONTROL_UPTIME:
 371                 return ctdb_control_uptime(ctdb, outdata);
 372
 373         case CTDB_CONTROL_START_RECOVERY:
 374                 return ctdb_control_start_recovery(ctdb, c, async_reply);
 375
 376         case CTDB_CONTROL_END_RECOVERY:
 377                 return ctdb_control_end_recovery(ctdb, c, async_reply);
 378
 379         case CTDB_CONTROL_GET_RECLOCK_FILE:
 380                 CHECK_CONTROL_DATA_SIZE(0);
 381                 return ctdb_control_get_reclock_file(ctdb, outdata);
 382
 383         case CTDB_CONTROL_TRY_DELETE_RECORDS:
 384                 return ctdb_control_try_delete_records(ctdb, indata, outdata);
 385
 386         case CTDB_CONTROL_ADD_PUBLIC_IP:
 387                 return ctdb_control_add_public_address(ctdb, indata);
 388
 389         case CTDB_CONTROL_DEL_PUBLIC_IP:
 390                 return ctdb_control_del_public_address(ctdb, indata);
 391
 392         case CTDB_CONTROL_GET_CAPABILITIES:
 393                 return ctdb->capabilities;
 394
 395         default:
 396                 DEBUG(DEBUG_CRIT,(__location__ " Unknown CTDB control opcode %u\n", opcode));
 397                 return -1;
 398         }
 399 }
 400
 401
 402 /*
 403   send a reply for a ctdb control
 404  */
 405 void ctdb_request_control_reply(struct ctdb_context *ctdb, struct ctdb_req_control *c,
 406                                 TDB_DATA *outdata, int32_t status, const char *errormsg)
 407 {
 408         struct ctdb_reply_control *r;
 409         size_t len;
 410
 411         /* some controls send no reply */
 412         if (c->flags & CTDB_CTRL_FLAG_NOREPLY) {
 413                 return;
 414         }
 415
 416         len = offsetof(struct ctdb_reply_control, data) + (outdata?outdata->dsize:0);
 417         if (errormsg) {
 418                 len += strlen(errormsg);
 419         }
 420         r = ctdb_transport_allocate(ctdb, ctdb, CTDB_REPLY_CONTROL, len, struct ctdb_reply_control);
 421         CTDB_NO_MEMORY_VOID(ctdb, r);
 422
 423         r->hdr.destnode     = c->hdr.srcnode;
 424         r->hdr.reqid        = c->hdr.reqid;
 425         r->status           = status;
 426         r->datalen          = outdata?outdata->dsize:0;
 427         if (outdata && outdata->dsize) {
 428                 memcpy(&r->data[0], outdata->dptr, outdata->dsize);
 429         }
 430         if (errormsg) {
 431                 r->errorlen = strlen(errormsg);
 432                 memcpy(&r->data[r->datalen], errormsg, r->errorlen);
 433         }
 434
 435         ctdb_queue_packet(ctdb, &r->hdr);
 436
 437         talloc_free(r);
 438 }
 439
 440 /*
 441   called when a CTDB_REQ_CONTROL packet comes in
 442 */
 443 void ctdb_request_control(struct ctdb_context *ctdb, struct ctdb_req_header *hdr)
 444 {
 445         struct ctdb_req_control *c = (struct ctdb_req_control *)hdr;
 446         TDB_DATA data, *outdata;
 447         int32_t status;
 448         bool async_reply = False;
 449         const char *errormsg = NULL;
 450
 451         data.dptr = &c->data[0];
 452         data.dsize = c->datalen;
 453
 454         outdata = talloc_zero(c, TDB_DATA);
 455
 456         status = ctdb_control_dispatch(ctdb, c, data, outdata, hdr->srcnode,
 457                                        &errormsg, &async_reply);
 458
 459         if (!async_reply) {
 460                 ctdb_request_control_reply(ctdb, c, outdata, status, errormsg);
 461         }
 462 }
 463
 464 /*
 465   called when a CTDB_REPLY_CONTROL packet comes in
 466 */
 467 void ctdb_reply_control(struct ctdb_context *ctdb, struct ctdb_req_header *hdr)
 468 {
 469         struct ctdb_reply_control *c = (struct ctdb_reply_control *)hdr;
 470         TDB_DATA data;
 471         struct ctdb_control_state *state;
 472         const char *errormsg = NULL;
 473
 474         state = ctdb_reqid_find(ctdb, hdr->reqid, struct ctdb_control_state);
 475         if (state == NULL) {
 476                 DEBUG(DEBUG_ERR,("pnn %u Invalid reqid %u in ctdb_reply_control\n",
 477                          ctdb->pnn, hdr->reqid));
 478                 return;
 479         }
 480
 481         if (hdr->reqid != state->reqid) {
 482                 /* we found a record  but it was the wrong one */
 483                 DEBUG(DEBUG_ERR, ("Dropped orphaned control reply with reqid:%u\n", hdr->reqid));
 484                 return;
 485         }
 486
 487         data.dptr = &c->data[0];
 488         data.dsize = c->datalen;
 489         if (c->errorlen) {
 490                 errormsg = talloc_strndup(state,
 491                                           (char *)&c->data[c->datalen], c->errorlen);
 492         }
 493
 494         /* make state a child of the packet, so it goes away when the packet
 495            is freed. */
 496         talloc_steal(hdr, state);
 497
 498         state->callback(ctdb, c->status, data, errormsg, state->private_data);
 499 }
 500
 501 static int ctdb_control_destructor(struct ctdb_control_state *state)
 502 {
 503         ctdb_reqid_remove(state->ctdb, state->reqid);
 504         return 0;
 505 }
 506
 507 /*
 508   handle a timeout of a control
 509  */
 510 static void ctdb_control_timeout(struct event_context *ev, struct timed_event *te,
 511                        struct timeval t, void *private_data)
 512 {
 513         struct ctdb_control_state *state = talloc_get_type(private_data, struct ctdb_control_state);
 514         TALLOC_CTX *tmp_ctx = talloc_new(ev);
 515
 516         state->ctdb->statistics.timeouts.control++;
 517
 518         talloc_steal(tmp_ctx, state);
 519
 520         state->callback(state->ctdb, -1, tdb_null,
 521                         "ctdb_control timed out",
 522                         state->private_data);
 523         talloc_free(tmp_ctx);
 524 }
 525
 526
 527 /*
 528   send a control message to a node
 529  */
 530 int ctdb_daemon_send_control(struct ctdb_context *ctdb, uint32_t destnode,
 531                              uint64_t srvid, uint32_t opcode, uint32_t client_id,
 532                              uint32_t flags,
 533                              TDB_DATA data,
 534                              ctdb_control_callback_fn_t callback,
 535                              void *private_data)
 536 {
 537         struct ctdb_req_control *c;
 538         struct ctdb_control_state *state;
 539         size_t len;
 540
 541         if (((destnode == CTDB_BROADCAST_VNNMAP) ||
 542              (destnode == CTDB_BROADCAST_ALL) ||
 543              (destnode == CTDB_BROADCAST_CONNECTED)) &&
 544             !(flags & CTDB_CTRL_FLAG_NOREPLY)) {
 545                 DEBUG(DEBUG_CRIT,("Attempt to broadcast control without NOREPLY\n"));
 546                 return -1;
 547         }
 548
 549         if (destnode != CTDB_BROADCAST_VNNMAP &&
 550             destnode != CTDB_BROADCAST_ALL &&
 551             destnode != CTDB_BROADCAST_CONNECTED &&
 552             (!ctdb_validate_pnn(ctdb, destnode) ||
 553              (ctdb->nodes[destnode]->flags & NODE_FLAGS_DISCONNECTED))) {
 554                 if (!(flags & CTDB_CTRL_FLAG_NOREPLY)) {
 555                         callback(ctdb, -1, tdb_null, "ctdb_control to disconnected node", private_data);
 556                 }
 557                 return 0;
 558         }
 559
 560         /* the state is made a child of private_data if possible. This means any reply
 561            will be discarded if the private_data goes away */
 562         state = talloc(private_data?private_data:ctdb, struct ctdb_control_state);
 563         CTDB_NO_MEMORY(ctdb, state);
 564
 565         state->reqid = ctdb_reqid_new(ctdb, state);
 566         state->callback = callback;
 567         state->private_data = private_data;
 568         state->ctdb = ctdb;
 569         state->flags = flags;
 570
 571         talloc_set_destructor(state, ctdb_control_destructor);
 572
 573         len = offsetof(struct ctdb_req_control, data) + data.dsize;
 574         c = ctdb_transport_allocate(ctdb, state, CTDB_REQ_CONTROL, len,
 575                                     struct ctdb_req_control);
 576         CTDB_NO_MEMORY(ctdb, c);
 577         talloc_set_name_const(c, "ctdb_req_control packet");
 578
 579         c->hdr.destnode     = destnode;
 580         c->hdr.reqid        = state->reqid;
 581         c->opcode           = opcode;
 582         c->client_id        = client_id;
 583         c->flags            = flags;
 584         c->srvid            = srvid;
 585         c->datalen          = data.dsize;
 586         if (data.dsize) {
 587                 memcpy(&c->data[0], data.dptr, data.dsize);
 588         }
 589
 590         ctdb_queue_packet(ctdb, &c->hdr);
 591
 592         if (flags & CTDB_CTRL_FLAG_NOREPLY) {
 593                 talloc_free(state);
 594                 return 0;
 595         }
 596
 597         if (ctdb->tunable.control_timeout) {
 598                 event_add_timed(ctdb->ev, state,
 599                                 timeval_current_ofs(ctdb->tunable.control_timeout, 0),
 600                                 ctdb_control_timeout, state);
 601         }
 602
 603         talloc_free(c);
 604         return 0;
 605 }