ctdb/protocol/protocol_control.c

   1 /*
   2    CTDB protocol marshalling
   3
   4    Copyright (C) Amitay Isaacs  2015
   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 "replace.h"
  21 #include "system/network.h"
  22
  23 #include <talloc.h>
  24 #include <tdb.h>
  25
  26 #include "protocol.h"
  27 #include "protocol_api.h"
  28 #include "protocol_private.h"
  29
  30 struct ctdb_req_control_wire {
  31         struct ctdb_req_header hdr;
  32         uint32_t opcode;
  33         uint32_t pad;
  34         uint64_t srvid;
  35         uint32_t client_id;
  36         uint32_t flags;
  37         uint32_t datalen;
  38         uint8_t data[1];
  39 };
  40
  41 struct ctdb_reply_control_wire {
  42         struct ctdb_req_header hdr;
  43         int32_t status;
  44         uint32_t datalen;
  45         uint32_t errorlen;
  46         uint8_t data[1];
  47 };
  48
  49 static size_t ctdb_req_control_data_len(struct ctdb_req_control_data *cd)
  50 {
  51         size_t len = 0;
  52         uint32_t u32;
  53
  54         if (cd == NULL) {
  55                 return 0;
  56         }
  57
  58         switch (cd->opcode) {
  59         case CTDB_CONTROL_PROCESS_EXISTS:
  60                 len = ctdb_pid_len(&cd->data.pid);
  61                 break;
  62
  63         case CTDB_CONTROL_STATISTICS:
  64                 break;
  65
  66         case CTDB_CONTROL_PING:
  67                 break;
  68
  69         case CTDB_CONTROL_GETDBPATH:
  70                 len = ctdb_uint32_len(&cd->data.db_id);
  71                 break;
  72
  73         case CTDB_CONTROL_GETVNNMAP:
  74                 break;
  75
  76         case CTDB_CONTROL_SETVNNMAP:
  77                 len = ctdb_vnn_map_len(cd->data.vnnmap);
  78                 break;
  79
  80         case CTDB_CONTROL_GET_DEBUG:
  81                 break;
  82
  83         case CTDB_CONTROL_SET_DEBUG:
  84                 len = ctdb_uint32_len(&cd->data.loglevel);
  85                 break;
  86
  87         case CTDB_CONTROL_GET_DBMAP:
  88                 break;
  89
  90         case CTDB_CONTROL_PULL_DB:
  91                 len = ctdb_pulldb_len(cd->data.pulldb);
  92                 break;
  93
  94         case CTDB_CONTROL_PUSH_DB:
  95                 len = ctdb_rec_buffer_len(cd->data.recbuf);
  96                 break;
  97
  98         case CTDB_CONTROL_GET_RECMODE:
  99                 break;
 100
 101         case CTDB_CONTROL_SET_RECMODE:
 102                 len = ctdb_uint32_len(&cd->data.recmode);
 103                 break;
 104
 105         case CTDB_CONTROL_STATISTICS_RESET:
 106                 break;
 107
 108         case CTDB_CONTROL_DB_ATTACH:
 109                 len = ctdb_string_len(&cd->data.db_name);
 110                 break;
 111
 112         case CTDB_CONTROL_SET_CALL:
 113                 break;
 114
 115         case CTDB_CONTROL_TRAVERSE_START:
 116                 len = ctdb_traverse_start_len(cd->data.traverse_start);
 117                 break;
 118
 119         case CTDB_CONTROL_TRAVERSE_ALL:
 120                 len = ctdb_traverse_all_len(cd->data.traverse_all);
 121                 break;
 122
 123         case CTDB_CONTROL_TRAVERSE_DATA:
 124                 len = ctdb_rec_data_len(cd->data.rec_data);
 125                 break;
 126
 127         case CTDB_CONTROL_REGISTER_SRVID:
 128                 break;
 129
 130         case CTDB_CONTROL_DEREGISTER_SRVID:
 131                 break;
 132
 133         case CTDB_CONTROL_GET_DBNAME:
 134                 len = ctdb_uint32_len(&cd->data.db_id);
 135                 break;
 136
 137         case CTDB_CONTROL_ENABLE_SEQNUM:
 138                 len = ctdb_uint32_len(&cd->data.db_id);
 139                 break;
 140
 141         case CTDB_CONTROL_UPDATE_SEQNUM:
 142                 len = ctdb_uint32_len(&cd->data.db_id);
 143                 break;
 144
 145         case CTDB_CONTROL_DUMP_MEMORY:
 146                 break;
 147
 148         case CTDB_CONTROL_GET_PID:
 149                 break;
 150
 151         case CTDB_CONTROL_GET_RECMASTER:
 152                 break;
 153
 154         case CTDB_CONTROL_SET_RECMASTER:
 155                 len = ctdb_uint32_len(&cd->data.recmaster);
 156                 break;
 157
 158         case CTDB_CONTROL_FREEZE:
 159                 break;
 160
 161         case CTDB_CONTROL_GET_PNN:
 162                 break;
 163
 164         case CTDB_CONTROL_SHUTDOWN:
 165                 break;
 166
 167         case CTDB_CONTROL_GET_MONMODE:
 168                 break;
 169
 170         case CTDB_CONTROL_TCP_CLIENT:
 171                 len = ctdb_connection_len(cd->data.conn);
 172                 break;
 173
 174         case CTDB_CONTROL_TCP_ADD:
 175                 len = ctdb_connection_len(cd->data.conn);
 176                 break;
 177
 178         case CTDB_CONTROL_TCP_REMOVE:
 179                 len = ctdb_connection_len(cd->data.conn);
 180                 break;
 181
 182         case CTDB_CONTROL_STARTUP:
 183                 break;
 184
 185         case CTDB_CONTROL_SET_TUNABLE:
 186                 len = ctdb_tunable_len(cd->data.tunable);
 187                 break;
 188
 189         case CTDB_CONTROL_GET_TUNABLE:
 190                 len = ctdb_stringn_len(&cd->data.tun_var);
 191                 break;
 192
 193         case CTDB_CONTROL_LIST_TUNABLES:
 194                 break;
 195
 196         case CTDB_CONTROL_MODIFY_FLAGS:
 197                 len = ctdb_node_flag_change_len(cd->data.flag_change);
 198                 break;
 199
 200         case CTDB_CONTROL_GET_ALL_TUNABLES:
 201                 break;
 202
 203         case CTDB_CONTROL_GET_TCP_TICKLE_LIST:
 204                 len = ctdb_sock_addr_len(cd->data.addr);
 205                 break;
 206
 207         case CTDB_CONTROL_SET_TCP_TICKLE_LIST:
 208                 len = ctdb_tickle_list_len(cd->data.tickles);
 209                 break;
 210
 211         case CTDB_CONTROL_DB_ATTACH_PERSISTENT:
 212                 len = ctdb_string_len(&cd->data.db_name);
 213                 break;
 214
 215         case CTDB_CONTROL_UPDATE_RECORD:
 216                 len = ctdb_rec_buffer_len(cd->data.recbuf);
 217                 break;
 218
 219         case CTDB_CONTROL_SEND_GRATUITOUS_ARP:
 220                 len = ctdb_addr_info_len(cd->data.addr_info);
 221                 break;
 222
 223         case CTDB_CONTROL_WIPE_DATABASE:
 224                 len = ctdb_transdb_len(cd->data.transdb);
 225                 break;
 226
 227         case CTDB_CONTROL_UPTIME:
 228                 break;
 229
 230         case CTDB_CONTROL_START_RECOVERY:
 231                 break;
 232
 233         case CTDB_CONTROL_END_RECOVERY:
 234                 break;
 235
 236         case CTDB_CONTROL_RELOAD_NODES_FILE:
 237                 break;
 238
 239         case CTDB_CONTROL_TRY_DELETE_RECORDS:
 240                 len = ctdb_rec_buffer_len(cd->data.recbuf);
 241                 break;
 242
 243         case CTDB_CONTROL_ENABLE_MONITOR:
 244                 break;
 245
 246         case CTDB_CONTROL_DISABLE_MONITOR:
 247                 break;
 248
 249         case CTDB_CONTROL_ADD_PUBLIC_IP:
 250                 len = ctdb_addr_info_len(cd->data.addr_info);
 251                 break;
 252
 253         case CTDB_CONTROL_DEL_PUBLIC_IP:
 254                 len = ctdb_addr_info_len(cd->data.addr_info);
 255                 break;
 256
 257         case CTDB_CONTROL_GET_CAPABILITIES:
 258                 break;
 259
 260         case CTDB_CONTROL_RECD_PING:
 261                 break;
 262
 263         case CTDB_CONTROL_RELEASE_IP:
 264                 len = ctdb_public_ip_len(cd->data.pubip);
 265                 break;
 266
 267         case CTDB_CONTROL_TAKEOVER_IP:
 268                 len = ctdb_public_ip_len(cd->data.pubip);
 269                 break;
 270
 271         case CTDB_CONTROL_GET_PUBLIC_IPS:
 272                 break;
 273
 274         case CTDB_CONTROL_GET_NODEMAP:
 275                 break;
 276
 277         case CTDB_CONTROL_TRAVERSE_KILL:
 278                 len = ctdb_traverse_start_len(cd->data.traverse_start);
 279                 break;
 280
 281         case CTDB_CONTROL_RECD_RECLOCK_LATENCY:
 282                 len = ctdb_double_len(&cd->data.reclock_latency);
 283                 break;
 284
 285         case CTDB_CONTROL_GET_RECLOCK_FILE:
 286                 break;
 287
 288         case CTDB_CONTROL_STOP_NODE:
 289                 break;
 290
 291         case CTDB_CONTROL_CONTINUE_NODE:
 292                 break;
 293
 294         case CTDB_CONTROL_SET_LMASTERROLE:
 295                 len = ctdb_uint32_len(&cd->data.role);
 296                 break;
 297
 298         case CTDB_CONTROL_SET_RECMASTERROLE:
 299                 len = ctdb_uint32_len(&cd->data.role);
 300                 break;
 301
 302         case CTDB_CONTROL_SET_BAN_STATE:
 303                 len = ctdb_ban_state_len(cd->data.ban_state);
 304                 break;
 305
 306         case CTDB_CONTROL_GET_BAN_STATE:
 307                 break;
 308
 309         case CTDB_CONTROL_REGISTER_NOTIFY:
 310                 len = ctdb_notify_data_len(cd->data.notify);
 311                 break;
 312
 313         case CTDB_CONTROL_DEREGISTER_NOTIFY:
 314                 len = ctdb_uint64_len(&cd->data.srvid);
 315                 break;
 316
 317         case CTDB_CONTROL_TRANS3_COMMIT:
 318                 len = ctdb_rec_buffer_len(cd->data.recbuf);
 319                 break;
 320
 321         case CTDB_CONTROL_GET_DB_SEQNUM:
 322                 u32 = 0;
 323                 len = ctdb_uint32_len(&cd->data.db_id) + ctdb_uint32_len(&u32);
 324                 break;
 325
 326         case CTDB_CONTROL_DB_SET_HEALTHY:
 327                 len = ctdb_uint32_len(&cd->data.db_id);
 328                 break;
 329
 330         case CTDB_CONTROL_DB_GET_HEALTH:
 331                 len = ctdb_uint32_len(&cd->data.db_id);
 332                 break;
 333
 334         case CTDB_CONTROL_GET_PUBLIC_IP_INFO:
 335                 len = ctdb_sock_addr_len(cd->data.addr);
 336                 break;
 337
 338         case CTDB_CONTROL_GET_IFACES:
 339                 break;
 340
 341         case CTDB_CONTROL_SET_IFACE_LINK_STATE:
 342                 len = ctdb_iface_len(cd->data.iface);
 343                 break;
 344
 345         case CTDB_CONTROL_TCP_ADD_DELAYED_UPDATE:
 346                 len = ctdb_connection_len(cd->data.conn);
 347                 break;
 348
 349         case CTDB_CONTROL_GET_STAT_HISTORY:
 350                 break;
 351
 352         case CTDB_CONTROL_SCHEDULE_FOR_DELETION:
 353                 len = ctdb_key_data_len(cd->data.key);
 354                 break;
 355
 356         case CTDB_CONTROL_SET_DB_READONLY:
 357                 len = ctdb_uint32_len(&cd->data.db_id);
 358                 break;
 359
 360         case CTDB_CONTROL_CHECK_SRVIDS:
 361                 break;
 362
 363         case CTDB_CONTROL_TRAVERSE_START_EXT:
 364                 len = ctdb_traverse_start_ext_len(cd->data.traverse_start_ext);
 365                 break;
 366
 367         case CTDB_CONTROL_GET_DB_STATISTICS:
 368                 len = ctdb_uint32_len(&cd->data.db_id);
 369                 break;
 370
 371         case CTDB_CONTROL_SET_DB_STICKY:
 372                 len = ctdb_uint32_len(&cd->data.db_id);
 373                 break;
 374
 375         case CTDB_CONTROL_RELOAD_PUBLIC_IPS:
 376                 break;
 377
 378         case CTDB_CONTROL_TRAVERSE_ALL_EXT:
 379                 len = ctdb_traverse_all_ext_len(cd->data.traverse_all_ext);
 380                 break;
 381
 382         case CTDB_CONTROL_RECEIVE_RECORDS:
 383                 len = ctdb_rec_buffer_len(cd->data.recbuf);
 384                 break;
 385
 386         case CTDB_CONTROL_IPREALLOCATED:
 387                 break;
 388
 389         case CTDB_CONTROL_GET_RUNSTATE:
 390                 break;
 391
 392         case CTDB_CONTROL_DB_DETACH:
 393                 len = ctdb_uint32_len(&cd->data.db_id);
 394                 break;
 395
 396         case CTDB_CONTROL_GET_NODES_FILE:
 397                 break;
 398
 399         case CTDB_CONTROL_DB_FREEZE:
 400                 len = ctdb_uint32_len(&cd->data.db_id);
 401                 break;
 402
 403         case CTDB_CONTROL_DB_THAW:
 404                 len = ctdb_uint32_len(&cd->data.db_id);
 405                 break;
 406
 407         case CTDB_CONTROL_DB_TRANSACTION_START:
 408                 len = ctdb_transdb_len(cd->data.transdb);
 409                 break;
 410
 411         case CTDB_CONTROL_DB_TRANSACTION_COMMIT:
 412                 len = ctdb_transdb_len(cd->data.transdb);
 413                 break;
 414
 415         case CTDB_CONTROL_DB_TRANSACTION_CANCEL:
 416                 len = ctdb_uint32_len(&cd->data.db_id);
 417                 break;
 418
 419         case CTDB_CONTROL_DB_PULL:
 420                 len = ctdb_pulldb_ext_len(cd->data.pulldb_ext);
 421                 break;
 422
 423         case CTDB_CONTROL_DB_PUSH_START:
 424                 len = ctdb_pulldb_ext_len(cd->data.pulldb_ext);
 425                 break;
 426
 427         case CTDB_CONTROL_DB_PUSH_CONFIRM:
 428                 len = ctdb_uint32_len(&cd->data.db_id);
 429                 break;
 430
 431         case CTDB_CONTROL_DB_OPEN_FLAGS:
 432                 len = ctdb_uint32_len(&cd->data.db_id);
 433                 break;
 434
 435         case CTDB_CONTROL_DB_ATTACH_REPLICATED:
 436                 len = ctdb_string_len(&cd->data.db_name);
 437                 break;
 438         }
 439
 440         return len;
 441 }
 442
 443 static void ctdb_req_control_data_push(struct ctdb_req_control_data *cd,
 444                                        uint8_t *buf)
 445 {
 446         size_t np, offset;
 447         uint32_t u32;
 448
 449         switch (cd->opcode) {
 450         case CTDB_CONTROL_PROCESS_EXISTS:
 451                 ctdb_pid_push(&cd->data.pid, buf, &np);
 452                 break;
 453
 454         case CTDB_CONTROL_GETDBPATH:
 455                 ctdb_uint32_push(&cd->data.db_id, buf, &np);
 456                 break;
 457
 458         case CTDB_CONTROL_SETVNNMAP:
 459                 ctdb_vnn_map_push(cd->data.vnnmap, buf, &np);
 460                 break;
 461
 462         case CTDB_CONTROL_SET_DEBUG:
 463                 ctdb_uint32_push(&cd->data.loglevel, buf, &np);
 464                 break;
 465
 466         case CTDB_CONTROL_PULL_DB:
 467                 ctdb_pulldb_push(cd->data.pulldb, buf, &np);
 468                 break;
 469
 470         case CTDB_CONTROL_PUSH_DB:
 471                 ctdb_rec_buffer_push(cd->data.recbuf, buf, &np);
 472                 break;
 473
 474         case CTDB_CONTROL_SET_RECMODE:
 475                 ctdb_uint32_push(&cd->data.recmode, buf, &np);
 476                 break;
 477
 478         case CTDB_CONTROL_DB_ATTACH:
 479                 ctdb_string_push(&cd->data.db_name, buf, &np);
 480                 break;
 481
 482         case CTDB_CONTROL_SET_CALL:
 483                 break;
 484
 485         case CTDB_CONTROL_TRAVERSE_START:
 486                 ctdb_traverse_start_push(cd->data.traverse_start, buf, &np);
 487                 break;
 488
 489         case CTDB_CONTROL_TRAVERSE_ALL:
 490                 ctdb_traverse_all_push(cd->data.traverse_all, buf, &np);
 491                 break;
 492
 493         case CTDB_CONTROL_TRAVERSE_DATA:
 494                 ctdb_rec_data_push(cd->data.rec_data, buf, &np);
 495                 break;
 496
 497         case CTDB_CONTROL_GET_DBNAME:
 498                 ctdb_uint32_push(&cd->data.db_id, buf, &np);
 499                 break;
 500
 501         case CTDB_CONTROL_ENABLE_SEQNUM:
 502                 ctdb_uint32_push(&cd->data.db_id, buf, &np);
 503                 break;
 504
 505         case CTDB_CONTROL_UPDATE_SEQNUM:
 506                 ctdb_uint32_push(&cd->data.db_id, buf, &np);
 507                 break;
 508
 509         case CTDB_CONTROL_SET_RECMASTER:
 510                 ctdb_uint32_push(&cd->data.recmaster, buf, &np);
 511                 break;
 512
 513         case CTDB_CONTROL_TCP_CLIENT:
 514                 ctdb_connection_push(cd->data.conn, buf, &np);
 515                 break;
 516
 517         case CTDB_CONTROL_TCP_ADD:
 518                 ctdb_connection_push(cd->data.conn, buf, &np);
 519                 break;
 520
 521         case CTDB_CONTROL_TCP_REMOVE:
 522                 ctdb_connection_push(cd->data.conn, buf, &np);
 523                 break;
 524
 525         case CTDB_CONTROL_SET_TUNABLE:
 526                 ctdb_tunable_push(cd->data.tunable, buf, &np);
 527                 break;
 528
 529         case CTDB_CONTROL_GET_TUNABLE:
 530                 ctdb_stringn_push(&cd->data.tun_var, buf, &np);
 531                 break;
 532
 533         case CTDB_CONTROL_MODIFY_FLAGS:
 534                 ctdb_node_flag_change_push(cd->data.flag_change, buf, &np);
 535                 break;
 536
 537         case CTDB_CONTROL_GET_TCP_TICKLE_LIST:
 538                 ctdb_sock_addr_push(cd->data.addr, buf, &np);
 539                 break;
 540
 541         case CTDB_CONTROL_SET_TCP_TICKLE_LIST:
 542                 ctdb_tickle_list_push(cd->data.tickles, buf);
 543                 break;
 544
 545         case CTDB_CONTROL_DB_ATTACH_PERSISTENT:
 546                 ctdb_string_push(&cd->data.db_name, buf, &np);
 547                 break;
 548
 549         case CTDB_CONTROL_UPDATE_RECORD:
 550                 ctdb_rec_buffer_push(cd->data.recbuf, buf, &np);
 551                 break;
 552
 553         case CTDB_CONTROL_SEND_GRATUITOUS_ARP:
 554                 ctdb_addr_info_push(cd->data.addr_info, buf);
 555                 break;
 556
 557         case CTDB_CONTROL_WIPE_DATABASE:
 558                 ctdb_transdb_push(cd->data.transdb, buf);
 559                 break;
 560
 561         case CTDB_CONTROL_TRY_DELETE_RECORDS:
 562                 ctdb_rec_buffer_push(cd->data.recbuf, buf, &np);
 563                 break;
 564
 565         case CTDB_CONTROL_ADD_PUBLIC_IP:
 566                 ctdb_addr_info_push(cd->data.addr_info, buf);
 567                 break;
 568
 569         case CTDB_CONTROL_DEL_PUBLIC_IP:
 570                 ctdb_addr_info_push(cd->data.addr_info, buf);
 571                 break;
 572
 573         case CTDB_CONTROL_RELEASE_IP:
 574                 ctdb_public_ip_push(cd->data.pubip, buf);
 575                 break;
 576
 577         case CTDB_CONTROL_TAKEOVER_IP:
 578                 ctdb_public_ip_push(cd->data.pubip, buf);
 579                 break;
 580
 581         case CTDB_CONTROL_TRAVERSE_KILL:
 582                 ctdb_traverse_start_push(cd->data.traverse_start, buf, &np);
 583                 break;
 584
 585         case CTDB_CONTROL_RECD_RECLOCK_LATENCY:
 586                 ctdb_double_push(&cd->data.reclock_latency, buf, &np);
 587                 break;
 588
 589         case CTDB_CONTROL_SET_LMASTERROLE:
 590                 ctdb_uint32_push(&cd->data.role, buf, &np);
 591                 break;
 592
 593         case CTDB_CONTROL_SET_RECMASTERROLE:
 594                 ctdb_uint32_push(&cd->data.role, buf, &np);
 595                 break;
 596
 597         case CTDB_CONTROL_SET_BAN_STATE:
 598                 ctdb_ban_state_push(cd->data.ban_state, buf);
 599                 break;
 600
 601         case CTDB_CONTROL_REGISTER_NOTIFY:
 602                 ctdb_notify_data_push(cd->data.notify, buf);
 603                 break;
 604
 605         case CTDB_CONTROL_DEREGISTER_NOTIFY:
 606                 ctdb_uint64_push(&cd->data.srvid, buf, &np);
 607                 break;
 608
 609         case CTDB_CONTROL_TRANS3_COMMIT:
 610                 ctdb_rec_buffer_push(cd->data.recbuf, buf, &np);
 611                 break;
 612
 613         case CTDB_CONTROL_GET_DB_SEQNUM:
 614                 u32 = 0;
 615                 offset = 0;
 616                 ctdb_uint32_push(&cd->data.db_id, buf, &np);
 617                 offset += np;
 618                 ctdb_uint32_push(&u32, buf+offset, &np);
 619                 offset += np;
 620                 np = offset;
 621                 break;
 622
 623         case CTDB_CONTROL_DB_SET_HEALTHY:
 624                 ctdb_uint32_push(&cd->data.db_id, buf, &np);
 625                 break;
 626
 627         case CTDB_CONTROL_DB_GET_HEALTH:
 628                 ctdb_uint32_push(&cd->data.db_id, buf, &np);
 629                 break;
 630
 631         case CTDB_CONTROL_GET_PUBLIC_IP_INFO:
 632                 ctdb_sock_addr_push(cd->data.addr, buf, &np);
 633                 break;
 634
 635         case CTDB_CONTROL_SET_IFACE_LINK_STATE:
 636                 ctdb_iface_push(cd->data.iface, buf);
 637                 break;
 638
 639         case CTDB_CONTROL_TCP_ADD_DELAYED_UPDATE:
 640                 ctdb_connection_push(cd->data.conn, buf, &np);
 641                 break;
 642
 643         case CTDB_CONTROL_SCHEDULE_FOR_DELETION:
 644                 ctdb_key_data_push(cd->data.key, buf);
 645                 break;
 646
 647         case CTDB_CONTROL_SET_DB_READONLY:
 648                 ctdb_uint32_push(&cd->data.db_id, buf, &np);
 649                 break;
 650
 651         case CTDB_CONTROL_CHECK_SRVIDS:
 652                 break;
 653
 654         case CTDB_CONTROL_TRAVERSE_START_EXT:
 655                 ctdb_traverse_start_ext_push(cd->data.traverse_start_ext, buf,
 656                                              &np);
 657                 break;
 658
 659         case CTDB_CONTROL_GET_DB_STATISTICS:
 660                 ctdb_uint32_push(&cd->data.db_id, buf, &np);
 661                 break;
 662
 663         case CTDB_CONTROL_SET_DB_STICKY:
 664                 ctdb_uint32_push(&cd->data.db_id, buf, &np);
 665                 break;
 666
 667         case CTDB_CONTROL_TRAVERSE_ALL_EXT:
 668                 ctdb_traverse_all_ext_push(cd->data.traverse_all_ext, buf,
 669                                            &np);
 670                 break;
 671
 672         case CTDB_CONTROL_RECEIVE_RECORDS:
 673                 ctdb_rec_buffer_push(cd->data.recbuf, buf, &np);
 674                 break;
 675
 676         case CTDB_CONTROL_DB_DETACH:
 677                 ctdb_uint32_push(&cd->data.db_id, buf, &np);
 678                 break;
 679
 680         case CTDB_CONTROL_DB_FREEZE:
 681                 ctdb_uint32_push(&cd->data.db_id, buf, &np);
 682                 break;
 683
 684         case CTDB_CONTROL_DB_THAW:
 685                 ctdb_uint32_push(&cd->data.db_id, buf, &np);
 686                 break;
 687
 688         case CTDB_CONTROL_DB_TRANSACTION_START:
 689                 ctdb_transdb_push(cd->data.transdb, buf);
 690                 break;
 691
 692         case CTDB_CONTROL_DB_TRANSACTION_COMMIT:
 693                 ctdb_transdb_push(cd->data.transdb, buf);
 694                 break;
 695
 696         case CTDB_CONTROL_DB_TRANSACTION_CANCEL:
 697                 ctdb_uint32_push(&cd->data.db_id, buf, &np);
 698                 break;
 699
 700         case CTDB_CONTROL_DB_PULL:
 701                 ctdb_pulldb_ext_push(cd->data.pulldb_ext, buf, &np);
 702                 break;
 703
 704         case CTDB_CONTROL_DB_PUSH_START:
 705                 ctdb_pulldb_ext_push(cd->data.pulldb_ext, buf, &np);
 706                 break;
 707
 708         case CTDB_CONTROL_DB_PUSH_CONFIRM:
 709                 ctdb_uint32_push(&cd->data.db_id, buf, &np);
 710                 break;
 711
 712         case CTDB_CONTROL_DB_OPEN_FLAGS:
 713                 ctdb_uint32_push(&cd->data.db_id, buf, &np);
 714                 break;
 715
 716         case CTDB_CONTROL_DB_ATTACH_REPLICATED:
 717                 ctdb_string_push(&cd->data.db_name, buf, &np);
 718                 break;
 719         }
 720 }
 721
 722 static int ctdb_req_control_data_pull(uint8_t *buf, size_t buflen,
 723                                       uint32_t opcode,
 724                                       TALLOC_CTX *mem_ctx,
 725                                       struct ctdb_req_control_data *cd)
 726 {
 727         size_t np, offset;
 728         uint32_t u32;
 729         int ret = 0;
 730
 731         cd->opcode = opcode;
 732
 733         switch (opcode) {
 734         case CTDB_CONTROL_PROCESS_EXISTS:
 735                 ret = ctdb_pid_pull(buf, buflen, &cd->data.pid, &np);
 736                 break;
 737
 738         case CTDB_CONTROL_GETDBPATH:
 739                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
 740                 break;
 741
 742         case CTDB_CONTROL_SETVNNMAP:
 743                 ret = ctdb_vnn_map_pull(buf, buflen, mem_ctx,
 744                                         &cd->data.vnnmap, &np);
 745                 break;
 746
 747         case CTDB_CONTROL_SET_DEBUG:
 748                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.loglevel, &np);
 749                 break;
 750
 751         case CTDB_CONTROL_PULL_DB:
 752                 ret = ctdb_pulldb_pull(buf, buflen, mem_ctx,
 753                                        &cd->data.pulldb, &np);
 754                 break;
 755
 756         case CTDB_CONTROL_PUSH_DB:
 757                 ret = ctdb_rec_buffer_pull(buf, buflen, mem_ctx,
 758                                            &cd->data.recbuf, &np);
 759                 break;
 760
 761         case CTDB_CONTROL_SET_RECMODE:
 762                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.recmode, &np);
 763                 break;
 764
 765         case CTDB_CONTROL_DB_ATTACH:
 766                 ret = ctdb_string_pull(buf, buflen, mem_ctx,
 767                                        &cd->data.db_name, &np);
 768                 break;
 769
 770         case CTDB_CONTROL_SET_CALL:
 771                 break;
 772
 773         case CTDB_CONTROL_TRAVERSE_START:
 774                 ret = ctdb_traverse_start_pull(buf, buflen, mem_ctx,
 775                                                &cd->data.traverse_start, &np);
 776                 break;
 777
 778         case CTDB_CONTROL_TRAVERSE_ALL:
 779                 ret = ctdb_traverse_all_pull(buf, buflen, mem_ctx,
 780                                              &cd->data.traverse_all, &np);
 781                 break;
 782
 783         case CTDB_CONTROL_TRAVERSE_DATA:
 784                 ret = ctdb_rec_data_pull(buf, buflen, mem_ctx,
 785                                          &cd->data.rec_data, &np);
 786                 break;
 787
 788         case CTDB_CONTROL_GET_DBNAME:
 789                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
 790                 break;
 791
 792         case CTDB_CONTROL_ENABLE_SEQNUM:
 793                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
 794                 break;
 795
 796         case CTDB_CONTROL_UPDATE_SEQNUM:
 797                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
 798                 break;
 799
 800         case CTDB_CONTROL_SET_RECMASTER:
 801                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.recmaster, &np);
 802                 break;
 803
 804         case CTDB_CONTROL_TCP_CLIENT:
 805                 ret = ctdb_connection_pull(buf, buflen, mem_ctx,
 806                                            &cd->data.conn, &np);
 807                 break;
 808
 809         case CTDB_CONTROL_TCP_ADD:
 810                 ret = ctdb_connection_pull(buf, buflen, mem_ctx,
 811                                            &cd->data.conn, &np);
 812                 break;
 813
 814         case CTDB_CONTROL_TCP_REMOVE:
 815                 ret = ctdb_connection_pull(buf, buflen, mem_ctx,
 816                                            &cd->data.conn, &np);
 817                 break;
 818
 819         case CTDB_CONTROL_SET_TUNABLE:
 820                 ret = ctdb_tunable_pull(buf, buflen, mem_ctx,
 821                                         &cd->data.tunable, &np);
 822                 break;
 823
 824         case CTDB_CONTROL_GET_TUNABLE:
 825                 ret = ctdb_stringn_pull(buf, buflen, mem_ctx,
 826                                         &cd->data.tun_var, &np);
 827                 break;
 828
 829         case CTDB_CONTROL_MODIFY_FLAGS:
 830                 ret = ctdb_node_flag_change_pull(buf, buflen, mem_ctx,
 831                                                  &cd->data.flag_change, &np);
 832                 break;
 833
 834         case CTDB_CONTROL_GET_TCP_TICKLE_LIST:
 835                 ret = ctdb_sock_addr_pull(buf, buflen, mem_ctx,
 836                                           &cd->data.addr, &np);
 837                 break;
 838
 839         case CTDB_CONTROL_SET_TCP_TICKLE_LIST:
 840                 ret = ctdb_tickle_list_pull(buf, buflen, mem_ctx,
 841                                             &cd->data.tickles);
 842                 break;
 843
 844         case CTDB_CONTROL_DB_ATTACH_PERSISTENT:
 845                 ret = ctdb_string_pull(buf, buflen, mem_ctx,
 846                                        &cd->data.db_name, &np);
 847                 break;
 848
 849         case CTDB_CONTROL_UPDATE_RECORD:
 850                 ret = ctdb_rec_buffer_pull(buf, buflen, mem_ctx,
 851                                            &cd->data.recbuf, &np);
 852                 break;
 853
 854         case CTDB_CONTROL_SEND_GRATUITOUS_ARP:
 855                 ret = ctdb_addr_info_pull(buf, buflen, mem_ctx,
 856                                           &cd->data.addr_info);
 857                 break;
 858
 859         case CTDB_CONTROL_WIPE_DATABASE:
 860                 ret = ctdb_transdb_pull(buf, buflen, mem_ctx,
 861                                        &cd->data.transdb);
 862                 break;
 863
 864         case CTDB_CONTROL_TRY_DELETE_RECORDS:
 865                 ret = ctdb_rec_buffer_pull(buf, buflen, mem_ctx,
 866                                            &cd->data.recbuf, &np);
 867                 break;
 868
 869         case CTDB_CONTROL_ADD_PUBLIC_IP:
 870                 ret = ctdb_addr_info_pull(buf, buflen, mem_ctx,
 871                                           &cd->data.addr_info);
 872                 break;
 873
 874         case CTDB_CONTROL_DEL_PUBLIC_IP:
 875                 ret = ctdb_addr_info_pull(buf, buflen, mem_ctx,
 876                                           &cd->data.addr_info);
 877                 break;
 878
 879         case CTDB_CONTROL_RELEASE_IP:
 880                 ret = ctdb_public_ip_pull(buf, buflen, mem_ctx,
 881                                           &cd->data.pubip);
 882                 break;
 883
 884         case CTDB_CONTROL_TAKEOVER_IP:
 885                 ret = ctdb_public_ip_pull(buf, buflen, mem_ctx,
 886                                           &cd->data.pubip);
 887                 break;
 888
 889         case CTDB_CONTROL_TRAVERSE_KILL:
 890                 ret = ctdb_traverse_start_pull(buf, buflen, mem_ctx,
 891                                                &cd->data.traverse_start, &np);
 892                 break;
 893
 894         case CTDB_CONTROL_RECD_RECLOCK_LATENCY:
 895                 ret = ctdb_double_pull(buf, buflen, &cd->data.reclock_latency,
 896                                        &np);
 897                 break;
 898
 899         case CTDB_CONTROL_SET_LMASTERROLE:
 900                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.role, &np);
 901                 break;
 902
 903         case CTDB_CONTROL_SET_RECMASTERROLE:
 904                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.role, &np);
 905                 break;
 906
 907         case CTDB_CONTROL_SET_BAN_STATE:
 908                 ret = ctdb_ban_state_pull(buf, buflen, mem_ctx,
 909                                           &cd->data.ban_state);
 910                 break;
 911
 912         case CTDB_CONTROL_REGISTER_NOTIFY:
 913                 ret = ctdb_notify_data_pull(buf, buflen, mem_ctx,
 914                                             &cd->data.notify);
 915                 break;
 916
 917         case CTDB_CONTROL_DEREGISTER_NOTIFY:
 918                 ctdb_uint64_pull(buf, buflen, &cd->data.srvid, &np);
 919                 break;
 920
 921         case CTDB_CONTROL_TRANS3_COMMIT:
 922                 ret = ctdb_rec_buffer_pull(buf, buflen, mem_ctx,
 923                                            &cd->data.recbuf, &np);
 924                 break;
 925
 926         case CTDB_CONTROL_GET_DB_SEQNUM:
 927                 offset = 0;
 928                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
 929                 if (ret != 0) {
 930                         break;
 931                 }
 932                 offset += np;
 933                 ret = ctdb_uint32_pull(buf+offset, buflen-offset, &u32, &np);
 934                 offset += np;
 935                 np = offset;
 936                 break;
 937
 938         case CTDB_CONTROL_DB_SET_HEALTHY:
 939                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
 940                 break;
 941
 942         case CTDB_CONTROL_DB_GET_HEALTH:
 943                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
 944                 break;
 945
 946         case CTDB_CONTROL_GET_PUBLIC_IP_INFO:
 947                 ret = ctdb_sock_addr_pull(buf, buflen, mem_ctx,
 948                                           &cd->data.addr, &np);
 949                 break;
 950
 951         case CTDB_CONTROL_SET_IFACE_LINK_STATE:
 952                 ret = ctdb_iface_pull(buf, buflen, mem_ctx,
 953                                       &cd->data.iface);
 954                 break;
 955
 956         case CTDB_CONTROL_TCP_ADD_DELAYED_UPDATE:
 957                 ret = ctdb_connection_pull(buf, buflen, mem_ctx,
 958                                            &cd->data.conn, &np);
 959                 break;
 960
 961         case CTDB_CONTROL_SCHEDULE_FOR_DELETION:
 962                 ret = ctdb_key_data_pull(buf, buflen, mem_ctx,
 963                                          &cd->data.key);
 964                 break;
 965
 966         case CTDB_CONTROL_SET_DB_READONLY:
 967                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
 968                 break;
 969
 970         case CTDB_CONTROL_CHECK_SRVIDS:
 971                 break;
 972
 973         case CTDB_CONTROL_TRAVERSE_START_EXT:
 974                 ret = ctdb_traverse_start_ext_pull(buf, buflen, mem_ctx,
 975                                                    &cd->data.traverse_start_ext,
 976                                                    &np);
 977                 break;
 978
 979         case CTDB_CONTROL_GET_DB_STATISTICS:
 980                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
 981                 break;
 982
 983         case CTDB_CONTROL_SET_DB_STICKY:
 984                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
 985                 break;
 986
 987         case CTDB_CONTROL_TRAVERSE_ALL_EXT:
 988                 ret = ctdb_traverse_all_ext_pull(buf, buflen, mem_ctx,
 989                                                  &cd->data.traverse_all_ext,
 990                                                  &np);
 991                 break;
 992
 993         case CTDB_CONTROL_RECEIVE_RECORDS:
 994                 ret = ctdb_rec_buffer_pull(buf, buflen, mem_ctx,
 995                                            &cd->data.recbuf, &np);
 996                 break;
 997
 998         case CTDB_CONTROL_DB_DETACH:
 999                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
1000                 break;
1001
1002         case CTDB_CONTROL_DB_FREEZE:
1003                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
1004                 break;
1005
1006         case CTDB_CONTROL_DB_THAW:
1007                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
1008                 break;
1009
1010         case CTDB_CONTROL_DB_TRANSACTION_START:
1011                 ret = ctdb_transdb_pull(buf, buflen, mem_ctx,
1012                                         &cd->data.transdb);
1013                 break;
1014
1015         case CTDB_CONTROL_DB_TRANSACTION_COMMIT:
1016                 ret = ctdb_transdb_pull(buf, buflen, mem_ctx,
1017                                         &cd->data.transdb);
1018                 break;
1019
1020         case CTDB_CONTROL_DB_TRANSACTION_CANCEL:
1021                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
1022                 break;
1023
1024         case CTDB_CONTROL_DB_PULL:
1025                 ret = ctdb_pulldb_ext_pull(buf, buflen, mem_ctx,
1026                                            &cd->data.pulldb_ext, &np);
1027                 break;
1028
1029         case CTDB_CONTROL_DB_PUSH_START:
1030                 ret = ctdb_pulldb_ext_pull(buf, buflen, mem_ctx,
1031                                            &cd->data.pulldb_ext, &np);
1032                 break;
1033
1034         case CTDB_CONTROL_DB_PUSH_CONFIRM:
1035                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
1036                 break;
1037
1038         case CTDB_CONTROL_DB_OPEN_FLAGS:
1039                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
1040                 break;
1041
1042         case CTDB_CONTROL_DB_ATTACH_REPLICATED:
1043                 ret = ctdb_string_pull(buf, buflen, mem_ctx,
1044                                        &cd->data.db_name, &np);
1045                 break;
1046         }
1047
1048         return ret;
1049 }
1050
1051 static size_t ctdb_reply_control_data_len(struct ctdb_reply_control_data *cd)
1052 {
1053         size_t len = 0;
1054
1055         if (cd == NULL) {
1056                 return 0;
1057         }
1058
1059         switch (cd->opcode) {
1060         case CTDB_CONTROL_PROCESS_EXISTS:
1061                 break;
1062
1063         case CTDB_CONTROL_STATISTICS:
1064                 len = ctdb_statistics_len(cd->data.stats);
1065                 break;
1066
1067         case CTDB_CONTROL_PING:
1068                 break;
1069
1070         case CTDB_CONTROL_GETDBPATH:
1071                 len = ctdb_string_len(&cd->data.db_path);
1072                 break;
1073
1074         case CTDB_CONTROL_GETVNNMAP:
1075                 len = ctdb_vnn_map_len(cd->data.vnnmap);
1076                 break;
1077
1078         case CTDB_CONTROL_SETVNNMAP:
1079                 break;
1080
1081         case CTDB_CONTROL_GET_DEBUG:
1082                 len = ctdb_uint32_len(&cd->data.loglevel);
1083                 break;
1084
1085         case CTDB_CONTROL_SET_DEBUG:
1086                 break;
1087
1088         case CTDB_CONTROL_GET_DBMAP:
1089                 len = ctdb_dbid_map_len(cd->data.dbmap);
1090                 break;
1091
1092         case CTDB_CONTROL_PULL_DB:
1093                 len = ctdb_rec_buffer_len(cd->data.recbuf);
1094                 break;
1095
1096         case CTDB_CONTROL_PUSH_DB:
1097                 break;
1098
1099         case CTDB_CONTROL_GET_RECMODE:
1100                 break;
1101
1102         case CTDB_CONTROL_SET_RECMODE:
1103                 break;
1104
1105         case CTDB_CONTROL_STATISTICS_RESET:
1106                 break;
1107
1108         case CTDB_CONTROL_DB_ATTACH:
1109                 len = ctdb_uint32_len(&cd->data.db_id);
1110                 break;
1111
1112         case CTDB_CONTROL_SET_CALL:
1113                 break;
1114
1115         case CTDB_CONTROL_TRAVERSE_START:
1116                 break;
1117
1118         case CTDB_CONTROL_TRAVERSE_ALL:
1119                 break;
1120
1121         case CTDB_CONTROL_TRAVERSE_DATA:
1122                 break;
1123
1124         case CTDB_CONTROL_REGISTER_SRVID:
1125                 break;
1126
1127         case CTDB_CONTROL_DEREGISTER_SRVID:
1128                 break;
1129
1130         case CTDB_CONTROL_GET_DBNAME:
1131                 len = ctdb_string_len(&cd->data.db_name);
1132                 break;
1133
1134         case CTDB_CONTROL_ENABLE_SEQNUM:
1135                 break;
1136
1137         case CTDB_CONTROL_UPDATE_SEQNUM:
1138                 break;
1139
1140         case CTDB_CONTROL_DUMP_MEMORY:
1141                 len = ctdb_string_len(&cd->data.mem_str);
1142                 break;
1143
1144         case CTDB_CONTROL_GET_PID:
1145                 break;
1146
1147         case CTDB_CONTROL_GET_RECMASTER:
1148                 break;
1149
1150         case CTDB_CONTROL_SET_RECMASTER:
1151                 break;
1152
1153         case CTDB_CONTROL_FREEZE:
1154                 break;
1155
1156         case CTDB_CONTROL_GET_PNN:
1157                 break;
1158
1159         case CTDB_CONTROL_SHUTDOWN:
1160                 break;
1161
1162         case CTDB_CONTROL_GET_MONMODE:
1163                 break;
1164
1165         case CTDB_CONTROL_TCP_CLIENT:
1166                 break;
1167
1168         case CTDB_CONTROL_TCP_ADD:
1169                 break;
1170
1171         case CTDB_CONTROL_TCP_REMOVE:
1172                 break;
1173
1174         case CTDB_CONTROL_STARTUP:
1175                 break;
1176
1177         case CTDB_CONTROL_SET_TUNABLE:
1178                 break;
1179
1180         case CTDB_CONTROL_GET_TUNABLE:
1181                 len = ctdb_uint32_len(&cd->data.tun_value);
1182                 break;
1183
1184         case CTDB_CONTROL_LIST_TUNABLES:
1185                 len = ctdb_var_list_len(cd->data.tun_var_list);
1186                 break;
1187
1188         case CTDB_CONTROL_MODIFY_FLAGS:
1189                 break;
1190
1191         case CTDB_CONTROL_GET_ALL_TUNABLES:
1192                 len = ctdb_tunable_list_len(cd->data.tun_list);
1193                 break;
1194
1195         case CTDB_CONTROL_GET_TCP_TICKLE_LIST:
1196                 len = ctdb_tickle_list_len(cd->data.tickles);
1197                 break;
1198
1199         case CTDB_CONTROL_SET_TCP_TICKLE_LIST:
1200                 break;
1201
1202         case CTDB_CONTROL_DB_ATTACH_PERSISTENT:
1203                 len = ctdb_uint32_len(&cd->data.db_id);
1204                 break;
1205
1206         case CTDB_CONTROL_UPDATE_RECORD:
1207                 break;
1208
1209         case CTDB_CONTROL_SEND_GRATUITOUS_ARP:
1210                 break;
1211
1212         case CTDB_CONTROL_WIPE_DATABASE:
1213                 break;
1214
1215         case CTDB_CONTROL_UPTIME:
1216                 len = ctdb_uptime_len(cd->data.uptime);
1217                 break;
1218
1219         case CTDB_CONTROL_START_RECOVERY:
1220                 break;
1221
1222         case CTDB_CONTROL_END_RECOVERY:
1223                 break;
1224
1225         case CTDB_CONTROL_RELOAD_NODES_FILE:
1226                 break;
1227
1228         case CTDB_CONTROL_TRY_DELETE_RECORDS:
1229                 len = ctdb_rec_buffer_len(cd->data.recbuf);
1230                 break;
1231
1232         case CTDB_CONTROL_ENABLE_MONITOR:
1233                 break;
1234
1235         case CTDB_CONTROL_DISABLE_MONITOR:
1236                 break;
1237
1238         case CTDB_CONTROL_ADD_PUBLIC_IP:
1239                 break;
1240
1241         case CTDB_CONTROL_DEL_PUBLIC_IP:
1242                 break;
1243
1244         case CTDB_CONTROL_GET_CAPABILITIES:
1245                 len = ctdb_uint32_len(&cd->data.caps);
1246                 break;
1247
1248         case CTDB_CONTROL_RECD_PING:
1249                 break;
1250
1251         case CTDB_CONTROL_RELEASE_IP:
1252                 break;
1253
1254         case CTDB_CONTROL_TAKEOVER_IP:
1255                 break;
1256
1257         case CTDB_CONTROL_GET_PUBLIC_IPS:
1258                 len = ctdb_public_ip_list_len(cd->data.pubip_list);
1259                 break;
1260
1261         case CTDB_CONTROL_GET_NODEMAP:
1262                 len = ctdb_node_map_len(cd->data.nodemap);
1263                 break;
1264
1265         case CTDB_CONTROL_TRAVERSE_KILL:
1266                 break;
1267
1268         case CTDB_CONTROL_RECD_RECLOCK_LATENCY:
1269                 break;
1270
1271         case CTDB_CONTROL_GET_RECLOCK_FILE:
1272                 len = ctdb_string_len(&cd->data.reclock_file);
1273                 break;
1274
1275         case CTDB_CONTROL_STOP_NODE:
1276                 break;
1277
1278         case CTDB_CONTROL_CONTINUE_NODE:
1279                 break;
1280
1281         case CTDB_CONTROL_SET_LMASTERROLE:
1282                 break;
1283
1284         case CTDB_CONTROL_SET_RECMASTERROLE:
1285                 break;
1286
1287         case CTDB_CONTROL_SET_BAN_STATE:
1288                 break;
1289
1290         case CTDB_CONTROL_GET_BAN_STATE:
1291                 len = ctdb_ban_state_len(cd->data.ban_state);
1292                 break;
1293
1294         case CTDB_CONTROL_SET_DB_PRIORITY:
1295                 break;
1296
1297         case CTDB_CONTROL_GET_DB_PRIORITY:
1298                 break;
1299
1300         case CTDB_CONTROL_REGISTER_NOTIFY:
1301                 break;
1302
1303         case CTDB_CONTROL_DEREGISTER_NOTIFY:
1304                 break;
1305
1306         case CTDB_CONTROL_TRANS3_COMMIT:
1307                 break;
1308
1309         case CTDB_CONTROL_GET_DB_SEQNUM:
1310                 len = ctdb_uint64_len(&cd->data.seqnum);
1311                 break;
1312
1313         case CTDB_CONTROL_DB_SET_HEALTHY:
1314                 break;
1315
1316         case CTDB_CONTROL_DB_GET_HEALTH:
1317                 len = ctdb_string_len(&cd->data.reason);
1318                 break;
1319
1320         case CTDB_CONTROL_GET_PUBLIC_IP_INFO:
1321                 len = ctdb_public_ip_info_len(cd->data.ipinfo);
1322                 break;
1323
1324         case CTDB_CONTROL_GET_IFACES:
1325                 len = ctdb_iface_list_len(cd->data.iface_list);
1326                 break;
1327
1328         case CTDB_CONTROL_SET_IFACE_LINK_STATE:
1329                 break;
1330
1331         case CTDB_CONTROL_TCP_ADD_DELAYED_UPDATE:
1332                 break;
1333
1334         case CTDB_CONTROL_GET_STAT_HISTORY:
1335                 len = ctdb_statistics_list_len(cd->data.stats_list);
1336                 break;
1337
1338         case CTDB_CONTROL_SCHEDULE_FOR_DELETION:
1339                 break;
1340
1341         case CTDB_CONTROL_SET_DB_READONLY:
1342                 break;
1343
1344         case CTDB_CONTROL_CHECK_SRVIDS:
1345                 break;
1346
1347         case CTDB_CONTROL_TRAVERSE_START_EXT:
1348                 break;
1349
1350         case CTDB_CONTROL_GET_DB_STATISTICS:
1351                 len = ctdb_db_statistics_len(cd->data.dbstats);
1352                 break;
1353
1354         case CTDB_CONTROL_SET_DB_STICKY:
1355                 break;
1356
1357         case CTDB_CONTROL_RELOAD_PUBLIC_IPS:
1358                 break;
1359
1360         case CTDB_CONTROL_TRAVERSE_ALL_EXT:
1361                 break;
1362
1363         case CTDB_CONTROL_RECEIVE_RECORDS:
1364                 len = ctdb_rec_buffer_len(cd->data.recbuf);
1365                 break;
1366
1367         case CTDB_CONTROL_IPREALLOCATED:
1368                 break;
1369
1370         case CTDB_CONTROL_GET_RUNSTATE:
1371                 len = ctdb_uint32_len(&cd->data.runstate);
1372                 break;
1373
1374         case CTDB_CONTROL_DB_DETACH:
1375                 break;
1376
1377         case CTDB_CONTROL_GET_NODES_FILE:
1378                 len = ctdb_node_map_len(cd->data.nodemap);
1379                 break;
1380
1381         case CTDB_CONTROL_DB_FREEZE:
1382                 break;
1383
1384         case CTDB_CONTROL_DB_THAW:
1385                 break;
1386
1387         case CTDB_CONTROL_DB_TRANSACTION_START:
1388                 break;
1389
1390         case CTDB_CONTROL_DB_TRANSACTION_COMMIT:
1391                 break;
1392
1393         case CTDB_CONTROL_DB_TRANSACTION_CANCEL:
1394                 break;
1395
1396         case CTDB_CONTROL_DB_PULL:
1397                 len = ctdb_uint32_len(&cd->data.num_records);
1398                 break;
1399
1400         case CTDB_CONTROL_DB_PUSH_START:
1401                 break;
1402
1403         case CTDB_CONTROL_DB_PUSH_CONFIRM:
1404                 len = ctdb_uint32_len(&cd->data.num_records);
1405                 break;
1406
1407         case CTDB_CONTROL_DB_OPEN_FLAGS:
1408                 len = ctdb_int32_len(&cd->data.tdb_flags);
1409                 break;
1410
1411         case CTDB_CONTROL_DB_ATTACH_REPLICATED:
1412                 len = ctdb_uint32_len(&cd->data.db_id);
1413                 break;
1414         }
1415
1416         return len;
1417 }
1418
1419 static void ctdb_reply_control_data_push(struct ctdb_reply_control_data *cd,
1420                                          uint8_t *buf)
1421 {
1422         size_t np;
1423
1424         switch (cd->opcode) {
1425         case CTDB_CONTROL_STATISTICS:
1426                 ctdb_statistics_push(cd->data.stats, buf, &np);
1427                 break;
1428
1429         case CTDB_CONTROL_GETDBPATH:
1430                 ctdb_string_push(&cd->data.db_path, buf, &np);
1431                 break;
1432
1433         case CTDB_CONTROL_GETVNNMAP:
1434                 ctdb_vnn_map_push(cd->data.vnnmap, buf, &np);
1435                 break;
1436
1437         case CTDB_CONTROL_GET_DEBUG:
1438                 ctdb_uint32_push(&cd->data.loglevel, buf, &np);
1439                 break;
1440
1441         case CTDB_CONTROL_GET_DBMAP:
1442                 ctdb_dbid_map_push(cd->data.dbmap, buf, &np);
1443                 break;
1444
1445         case CTDB_CONTROL_PULL_DB:
1446                 ctdb_rec_buffer_push(cd->data.recbuf, buf, &np);
1447                 break;
1448
1449         case CTDB_CONTROL_PUSH_DB:
1450                 break;
1451
1452         case CTDB_CONTROL_DB_ATTACH:
1453                 ctdb_uint32_push(&cd->data.db_id, buf, &np);
1454                 break;
1455
1456         case CTDB_CONTROL_GET_DBNAME:
1457                 ctdb_string_push(&cd->data.db_name, buf, &np);
1458                 break;
1459
1460         case CTDB_CONTROL_DUMP_MEMORY:
1461                 ctdb_string_push(&cd->data.mem_str, buf, &np);
1462                 break;
1463
1464         case CTDB_CONTROL_GET_PID:
1465                 break;
1466
1467         case CTDB_CONTROL_GET_RECMASTER:
1468                 break;
1469
1470         case CTDB_CONTROL_GET_TUNABLE:
1471                 ctdb_uint32_push(&cd->data.tun_value, buf, &np);
1472                 break;
1473
1474         case CTDB_CONTROL_LIST_TUNABLES:
1475                 ctdb_var_list_push(cd->data.tun_var_list, buf);
1476                 break;
1477
1478         case CTDB_CONTROL_GET_ALL_TUNABLES:
1479                 ctdb_tunable_list_push(cd->data.tun_list, buf);
1480                 break;
1481
1482         case CTDB_CONTROL_GET_TCP_TICKLE_LIST:
1483                 ctdb_tickle_list_push(cd->data.tickles, buf);
1484                 break;
1485
1486         case CTDB_CONTROL_DB_ATTACH_PERSISTENT:
1487                 ctdb_uint32_push(&cd->data.db_id, buf, &np);
1488                 break;
1489
1490         case CTDB_CONTROL_UPTIME:
1491                 ctdb_uptime_push(cd->data.uptime, buf);
1492                 break;
1493
1494         case CTDB_CONTROL_TRY_DELETE_RECORDS:
1495                 ctdb_rec_buffer_push(cd->data.recbuf, buf, &np);
1496                 break;
1497
1498         case CTDB_CONTROL_GET_CAPABILITIES:
1499                 ctdb_uint32_push(&cd->data.caps, buf, &np);
1500                 break;
1501
1502         case CTDB_CONTROL_GET_PUBLIC_IPS:
1503                 ctdb_public_ip_list_push(cd->data.pubip_list, buf);
1504                 break;
1505
1506         case CTDB_CONTROL_GET_NODEMAP:
1507                 ctdb_node_map_push(cd->data.nodemap, buf);
1508                 break;
1509
1510         case CTDB_CONTROL_GET_RECLOCK_FILE:
1511                 ctdb_string_push(&cd->data.reclock_file, buf, &np);
1512                 break;
1513
1514         case CTDB_CONTROL_GET_BAN_STATE:
1515                 ctdb_ban_state_push(cd->data.ban_state, buf);
1516                 break;
1517
1518         case CTDB_CONTROL_GET_DB_PRIORITY:
1519                 break;
1520
1521         case CTDB_CONTROL_GET_DB_SEQNUM:
1522                 ctdb_uint64_push(&cd->data.seqnum, buf, &np);
1523                 break;
1524
1525         case CTDB_CONTROL_DB_GET_HEALTH:
1526                 ctdb_string_push(&cd->data.reason, buf, &np);
1527                 break;
1528
1529         case CTDB_CONTROL_GET_PUBLIC_IP_INFO:
1530                 ctdb_public_ip_info_push(cd->data.ipinfo, buf);
1531                 break;
1532
1533         case CTDB_CONTROL_GET_IFACES:
1534                 ctdb_iface_list_push(cd->data.iface_list, buf);
1535                 break;
1536
1537         case CTDB_CONTROL_GET_STAT_HISTORY:
1538                 ctdb_statistics_list_push(cd->data.stats_list, buf);
1539                 break;
1540
1541         case CTDB_CONTROL_CHECK_SRVIDS:
1542                 break;
1543
1544         case CTDB_CONTROL_GET_DB_STATISTICS:
1545                 ctdb_db_statistics_push(cd->data.dbstats, buf);
1546                 break;
1547
1548         case CTDB_CONTROL_RECEIVE_RECORDS:
1549                 ctdb_rec_buffer_push(cd->data.recbuf, buf, &np);
1550                 break;
1551
1552         case CTDB_CONTROL_GET_RUNSTATE:
1553                 ctdb_uint32_push(&cd->data.runstate, buf, &np);
1554                 break;
1555
1556         case CTDB_CONTROL_GET_NODES_FILE:
1557                 ctdb_node_map_push(cd->data.nodemap, buf);
1558                 break;
1559
1560         case CTDB_CONTROL_DB_PULL:
1561                 ctdb_uint32_push(&cd->data.num_records, buf, &np);
1562                 break;
1563
1564         case CTDB_CONTROL_DB_PUSH_CONFIRM:
1565                 ctdb_uint32_push(&cd->data.num_records, buf, &np);
1566                 break;
1567
1568         case CTDB_CONTROL_DB_OPEN_FLAGS:
1569                 ctdb_int32_push(&cd->data.tdb_flags, buf, &np);
1570                 break;
1571
1572         case CTDB_CONTROL_DB_ATTACH_REPLICATED:
1573                 ctdb_uint32_push(&cd->data.db_id, buf, &np);
1574                 break;
1575         }
1576 }
1577
1578 static int ctdb_reply_control_data_pull(uint8_t *buf, size_t buflen,
1579                                         uint32_t opcode, TALLOC_CTX *mem_ctx,
1580                                         struct ctdb_reply_control_data *cd)
1581 {
1582         size_t np;
1583         int ret = 0;
1584
1585         cd->opcode = opcode;
1586
1587         switch (opcode) {
1588         case CTDB_CONTROL_STATISTICS:
1589                 ret = ctdb_statistics_pull(buf, buflen, mem_ctx,
1590                                            &cd->data.stats, &np);
1591                 break;
1592
1593         case CTDB_CONTROL_GETDBPATH:
1594                 ret = ctdb_string_pull(buf, buflen, mem_ctx,
1595                                        &cd->data.db_path, &np);
1596                 break;
1597
1598         case CTDB_CONTROL_GETVNNMAP:
1599                 ret = ctdb_vnn_map_pull(buf, buflen, mem_ctx,
1600                                         &cd->data.vnnmap, &np);
1601                 break;
1602
1603         case CTDB_CONTROL_GET_DEBUG:
1604                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.loglevel, &np);
1605                 break;
1606
1607         case CTDB_CONTROL_GET_DBMAP:
1608                 ret = ctdb_dbid_map_pull(buf, buflen, mem_ctx,
1609                                          &cd->data.dbmap, &np);
1610                 break;
1611
1612         case CTDB_CONTROL_PULL_DB:
1613                 ret = ctdb_rec_buffer_pull(buf, buflen, mem_ctx,
1614                                            &cd->data.recbuf, &np);
1615                 break;
1616
1617         case CTDB_CONTROL_PUSH_DB:
1618                 break;
1619
1620         case CTDB_CONTROL_DB_ATTACH:
1621                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
1622                 break;
1623
1624         case CTDB_CONTROL_GET_DBNAME:
1625                 ret = ctdb_string_pull(buf, buflen, mem_ctx,
1626                                        &cd->data.db_name, &np);
1627                 break;
1628
1629         case CTDB_CONTROL_DUMP_MEMORY:
1630                 ret = ctdb_string_pull(buf, buflen, mem_ctx,
1631                                        &cd->data.mem_str, &np);
1632                 break;
1633
1634         case CTDB_CONTROL_GET_PID:
1635                 break;
1636
1637         case CTDB_CONTROL_GET_RECMASTER:
1638                 break;
1639
1640         case CTDB_CONTROL_GET_TUNABLE:
1641                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.tun_value,
1642                                        &np);
1643                 break;
1644
1645         case CTDB_CONTROL_LIST_TUNABLES:
1646                 ret = ctdb_var_list_pull(buf, buflen, mem_ctx,
1647                                          &cd->data.tun_var_list);
1648                 break;
1649
1650         case CTDB_CONTROL_GET_ALL_TUNABLES:
1651                 ret = ctdb_tunable_list_pull(buf, buflen, mem_ctx,
1652                                              &cd->data.tun_list);
1653                 break;
1654
1655         case CTDB_CONTROL_GET_TCP_TICKLE_LIST:
1656                 ret = ctdb_tickle_list_pull(buf, buflen, mem_ctx,
1657                                             &cd->data.tickles);
1658                 break;
1659
1660         case CTDB_CONTROL_DB_ATTACH_PERSISTENT:
1661                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
1662                 break;
1663
1664         case CTDB_CONTROL_UPTIME:
1665                 ret = ctdb_uptime_pull(buf, buflen, mem_ctx,
1666                                        &cd->data.uptime);
1667                 break;
1668
1669         case CTDB_CONTROL_TRY_DELETE_RECORDS:
1670                 ctdb_rec_buffer_pull(buf, buflen, mem_ctx,
1671                                      &cd->data.recbuf, &np);
1672                 break;
1673
1674         case CTDB_CONTROL_GET_CAPABILITIES:
1675                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.caps, &np);
1676                 break;
1677
1678         case CTDB_CONTROL_GET_PUBLIC_IPS:
1679                 ret = ctdb_public_ip_list_pull(buf, buflen, mem_ctx,
1680                                                &cd->data.pubip_list);
1681                 break;
1682
1683         case CTDB_CONTROL_GET_NODEMAP:
1684                 ret = ctdb_node_map_pull(buf, buflen, mem_ctx,
1685                                          &cd->data.nodemap);
1686                 break;
1687
1688         case CTDB_CONTROL_GET_RECLOCK_FILE:
1689                 ret = ctdb_string_pull(buf, buflen, mem_ctx,
1690                                        &cd->data.reclock_file, &np);
1691                 break;
1692
1693         case CTDB_CONTROL_GET_BAN_STATE:
1694                 ret = ctdb_ban_state_pull(buf, buflen, mem_ctx,
1695                                           &cd->data.ban_state);
1696                 break;
1697
1698         case CTDB_CONTROL_GET_DB_PRIORITY:
1699                 break;
1700
1701         case CTDB_CONTROL_GET_DB_SEQNUM:
1702                 ret = ctdb_uint64_pull(buf, buflen, &cd->data.seqnum, &np);
1703                 break;
1704
1705         case CTDB_CONTROL_DB_GET_HEALTH:
1706                 ret = ctdb_string_pull(buf, buflen, mem_ctx,
1707                                        &cd->data.reason, &np);
1708                 break;
1709
1710         case CTDB_CONTROL_GET_PUBLIC_IP_INFO:
1711                 ret = ctdb_public_ip_info_pull(buf, buflen, mem_ctx,
1712                                                &cd->data.ipinfo);
1713                 break;
1714
1715         case CTDB_CONTROL_GET_IFACES:
1716                 ret = ctdb_iface_list_pull(buf, buflen, mem_ctx,
1717                                            &cd->data.iface_list);
1718                 break;
1719
1720         case CTDB_CONTROL_GET_STAT_HISTORY:
1721                 ret = ctdb_statistics_list_pull(buf, buflen, mem_ctx,
1722                                                 &cd->data.stats_list);
1723                 break;
1724
1725         case CTDB_CONTROL_CHECK_SRVIDS:
1726                 break;
1727
1728         case CTDB_CONTROL_GET_DB_STATISTICS:
1729                 ret = ctdb_db_statistics_pull(buf, buflen, mem_ctx,
1730                                               &cd->data.dbstats);
1731                 break;
1732
1733         case CTDB_CONTROL_RECEIVE_RECORDS:
1734                 ret = ctdb_rec_buffer_pull(buf, buflen, mem_ctx,
1735                                            &cd->data.recbuf, &np);
1736                 break;
1737
1738         case CTDB_CONTROL_GET_RUNSTATE:
1739                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.runstate, &np);
1740                 break;
1741
1742         case CTDB_CONTROL_GET_NODES_FILE:
1743                 ret = ctdb_node_map_pull(buf, buflen, mem_ctx,
1744                                          &cd->data.nodemap);
1745                 break;
1746
1747         case CTDB_CONTROL_DB_PULL:
1748                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.num_records,
1749                                        &np);
1750                 break;
1751
1752         case CTDB_CONTROL_DB_PUSH_CONFIRM:
1753                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.num_records,
1754                                        &np);
1755                 break;
1756
1757         case CTDB_CONTROL_DB_OPEN_FLAGS:
1758                 ret = ctdb_int32_pull(buf, buflen, &cd->data.tdb_flags, &np);
1759                 break;
1760
1761         case CTDB_CONTROL_DB_ATTACH_REPLICATED:
1762                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
1763                 break;
1764         }
1765
1766         return ret;
1767 }
1768
1769 size_t ctdb_req_control_len(struct ctdb_req_header *h,
1770                             struct ctdb_req_control *c)
1771 {
1772         return offsetof(struct ctdb_req_control_wire, data) +
1773                 ctdb_req_control_data_len(&c->rdata);
1774 }
1775
1776 int ctdb_req_control_push(struct ctdb_req_header *h,
1777                           struct ctdb_req_control *request,
1778                           uint8_t *buf, size_t *buflen)
1779 {
1780         struct ctdb_req_control_wire *wire =
1781                 (struct ctdb_req_control_wire *)buf;
1782         size_t length;
1783
1784         length = ctdb_req_control_len(h, request);
1785         if (*buflen < length) {
1786                 *buflen = length;
1787                 return EMSGSIZE;
1788         }
1789
1790         h->length = *buflen;
1791         ctdb_req_header_push(h, (uint8_t *)&wire->hdr);
1792
1793         wire->opcode = request->opcode;
1794         wire->pad = request->pad;
1795         wire->srvid = request->srvid;
1796         wire->client_id = request->client_id;
1797         wire->flags = request->flags;
1798
1799         wire->datalen = ctdb_req_control_data_len(&request->rdata);
1800         ctdb_req_control_data_push(&request->rdata, wire->data);
1801
1802         return 0;
1803 }
1804
1805 int ctdb_req_control_pull(uint8_t *buf, size_t buflen,
1806                           struct ctdb_req_header *h,
1807                           TALLOC_CTX *mem_ctx,
1808                           struct ctdb_req_control *c)
1809 {
1810         struct ctdb_req_control_wire *wire =
1811                 (struct ctdb_req_control_wire *)buf;
1812         size_t length;
1813         int ret;
1814
1815         length = offsetof(struct ctdb_req_control_wire, data);
1816         if (buflen < length) {
1817                 return EMSGSIZE;
1818         }
1819         if (wire->datalen > buflen) {
1820                 return EMSGSIZE;
1821         }
1822         if (length + wire->datalen < length) {
1823                 return EMSGSIZE;
1824         }
1825         if (buflen < length + wire->datalen) {
1826                 return EMSGSIZE;
1827         }
1828
1829         if (h != NULL) {
1830                 ret = ctdb_req_header_pull((uint8_t *)&wire->hdr, buflen, h);
1831                 if (ret != 0) {
1832                         return ret;
1833                 }
1834         }
1835
1836         c->opcode = wire->opcode;
1837         c->pad = wire->pad;
1838         c->srvid = wire->srvid;
1839         c->client_id = wire->client_id;
1840         c->flags = wire->flags;
1841
1842         ret = ctdb_req_control_data_pull(wire->data, wire->datalen,
1843                                          c->opcode, mem_ctx, &c->rdata);
1844         if (ret != 0) {
1845                 return ret;
1846         }
1847
1848         return 0;
1849 }
1850
1851 size_t ctdb_reply_control_len(struct ctdb_req_header *h,
1852                               struct ctdb_reply_control *c)
1853 {
1854         return offsetof(struct ctdb_reply_control_wire, data) +
1855                 (c->status == 0 ?
1856                         ctdb_reply_control_data_len(&c->rdata) :
1857                         ctdb_string_len(&c->errmsg));
1858 }
1859
1860 int ctdb_reply_control_push(struct ctdb_req_header *h,
1861                             struct ctdb_reply_control *reply,
1862                             uint8_t *buf, size_t *buflen)
1863 {
1864         struct ctdb_reply_control_wire *wire =
1865                 (struct ctdb_reply_control_wire *)buf;
1866         size_t length, np;
1867
1868         length = ctdb_reply_control_len(h, reply);
1869         if (*buflen < length) {
1870                 *buflen = length;
1871                 return EMSGSIZE;
1872         }
1873
1874         h->length = *buflen;
1875         ctdb_req_header_push(h, (uint8_t *)&wire->hdr);
1876
1877         wire->status = reply->status;
1878
1879         if (reply->status == 0) {
1880                 wire->datalen = ctdb_reply_control_data_len(&reply->rdata);
1881                 wire->errorlen = 0;
1882                 ctdb_reply_control_data_push(&reply->rdata, wire->data);
1883         } else {
1884                 wire->datalen = 0;
1885                 wire->errorlen = ctdb_string_len(&reply->errmsg);
1886                 ctdb_string_push(&reply->errmsg, wire->data + wire->datalen,
1887                                  &np);
1888         }
1889
1890         return 0;
1891 }
1892
1893 int ctdb_reply_control_pull(uint8_t *buf, size_t buflen, uint32_t opcode,
1894                             struct ctdb_req_header *h,
1895                             TALLOC_CTX *mem_ctx,
1896                             struct ctdb_reply_control *c)
1897 {
1898         struct ctdb_reply_control_wire *wire =
1899                 (struct ctdb_reply_control_wire *)buf;
1900         size_t length, np;
1901         int ret;
1902
1903         length = offsetof(struct ctdb_reply_control_wire, data);
1904         if (buflen < length) {
1905                 return EMSGSIZE;
1906         }
1907         if (wire->datalen > buflen || wire->errorlen > buflen) {
1908                 return EMSGSIZE;
1909         }
1910         if (length + wire->datalen < length) {
1911                 return EMSGSIZE;
1912         }
1913         if (length + wire->datalen + wire->errorlen < length) {
1914                 return EMSGSIZE;
1915         }
1916         if (buflen < length + wire->datalen + wire->errorlen) {
1917                 return EMSGSIZE;
1918         }
1919
1920         if (h != NULL) {
1921                 ret = ctdb_req_header_pull((uint8_t *)&wire->hdr, buflen, h);
1922                 if (ret != 0) {
1923                         return ret;
1924                 }
1925         }
1926
1927         c->status = wire->status;
1928
1929         if (c->status != -1) {
1930                 ret = ctdb_reply_control_data_pull(wire->data, wire->datalen,
1931                                                    opcode, mem_ctx,
1932                                                    &c->rdata);
1933                 if (ret != 0) {
1934                         return ret;
1935                 }
1936         }
1937
1938         ret = ctdb_string_pull(wire->data + wire->datalen, wire->errorlen,
1939                                mem_ctx, &c->errmsg, &np);
1940         if (ret != 0) {
1941                 return ret;
1942         }
1943
1944         return 0;
1945 }