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, size_t *npush)
 445 {
 446         size_t np = 0, 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, &np);
 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, &np);
 555                 break;
 556
 557         case CTDB_CONTROL_WIPE_DATABASE:
 558                 ctdb_transdb_push(cd->data.transdb, buf, &np);
 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, &np);
 567                 break;
 568
 569         case CTDB_CONTROL_DEL_PUBLIC_IP:
 570                 ctdb_addr_info_push(cd->data.addr_info, buf, &np);
 571                 break;
 572
 573         case CTDB_CONTROL_RELEASE_IP:
 574                 ctdb_public_ip_push(cd->data.pubip, buf, &np);
 575                 break;
 576
 577         case CTDB_CONTROL_TAKEOVER_IP:
 578                 ctdb_public_ip_push(cd->data.pubip, buf, &np);
 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, &np);
 599                 break;
 600
 601         case CTDB_CONTROL_REGISTER_NOTIFY:
 602                 ctdb_notify_data_push(cd->data.notify, buf, &np);
 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, &np);
 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, &np);
 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, &np);
 690                 break;
 691
 692         case CTDB_CONTROL_DB_TRANSACTION_COMMIT:
 693                 ctdb_transdb_push(cd->data.transdb, buf, &np);
 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         *npush = np;
 722 }
 723
 724 static int ctdb_req_control_data_pull(uint8_t *buf, size_t buflen,
 725                                       uint32_t opcode,
 726                                       TALLOC_CTX *mem_ctx,
 727                                       struct ctdb_req_control_data *cd,
 728                                       size_t *npull)
 729 {
 730         size_t np = 0, offset;
 731         uint32_t u32;
 732         int ret = 0;
 733
 734         cd->opcode = opcode;
 735
 736         switch (opcode) {
 737         case CTDB_CONTROL_PROCESS_EXISTS:
 738                 ret = ctdb_pid_pull(buf, buflen, &cd->data.pid, &np);
 739                 break;
 740
 741         case CTDB_CONTROL_GETDBPATH:
 742                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
 743                 break;
 744
 745         case CTDB_CONTROL_SETVNNMAP:
 746                 ret = ctdb_vnn_map_pull(buf, buflen, mem_ctx,
 747                                         &cd->data.vnnmap, &np);
 748                 break;
 749
 750         case CTDB_CONTROL_SET_DEBUG:
 751                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.loglevel, &np);
 752                 break;
 753
 754         case CTDB_CONTROL_PULL_DB:
 755                 ret = ctdb_pulldb_pull(buf, buflen, mem_ctx,
 756                                        &cd->data.pulldb, &np);
 757                 break;
 758
 759         case CTDB_CONTROL_PUSH_DB:
 760                 ret = ctdb_rec_buffer_pull(buf, buflen, mem_ctx,
 761                                            &cd->data.recbuf, &np);
 762                 break;
 763
 764         case CTDB_CONTROL_SET_RECMODE:
 765                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.recmode, &np);
 766                 break;
 767
 768         case CTDB_CONTROL_DB_ATTACH:
 769                 ret = ctdb_string_pull(buf, buflen, mem_ctx,
 770                                        &cd->data.db_name, &np);
 771                 break;
 772
 773         case CTDB_CONTROL_SET_CALL:
 774                 break;
 775
 776         case CTDB_CONTROL_TRAVERSE_START:
 777                 ret = ctdb_traverse_start_pull(buf, buflen, mem_ctx,
 778                                                &cd->data.traverse_start, &np);
 779                 break;
 780
 781         case CTDB_CONTROL_TRAVERSE_ALL:
 782                 ret = ctdb_traverse_all_pull(buf, buflen, mem_ctx,
 783                                              &cd->data.traverse_all, &np);
 784                 break;
 785
 786         case CTDB_CONTROL_TRAVERSE_DATA:
 787                 ret = ctdb_rec_data_pull(buf, buflen, mem_ctx,
 788                                          &cd->data.rec_data, &np);
 789                 break;
 790
 791         case CTDB_CONTROL_GET_DBNAME:
 792                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
 793                 break;
 794
 795         case CTDB_CONTROL_ENABLE_SEQNUM:
 796                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
 797                 break;
 798
 799         case CTDB_CONTROL_UPDATE_SEQNUM:
 800                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
 801                 break;
 802
 803         case CTDB_CONTROL_SET_RECMASTER:
 804                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.recmaster, &np);
 805                 break;
 806
 807         case CTDB_CONTROL_TCP_CLIENT:
 808                 ret = ctdb_connection_pull(buf, buflen, mem_ctx,
 809                                            &cd->data.conn, &np);
 810                 break;
 811
 812         case CTDB_CONTROL_TCP_ADD:
 813                 ret = ctdb_connection_pull(buf, buflen, mem_ctx,
 814                                            &cd->data.conn, &np);
 815                 break;
 816
 817         case CTDB_CONTROL_TCP_REMOVE:
 818                 ret = ctdb_connection_pull(buf, buflen, mem_ctx,
 819                                            &cd->data.conn, &np);
 820                 break;
 821
 822         case CTDB_CONTROL_SET_TUNABLE:
 823                 ret = ctdb_tunable_pull(buf, buflen, mem_ctx,
 824                                         &cd->data.tunable, &np);
 825                 break;
 826
 827         case CTDB_CONTROL_GET_TUNABLE:
 828                 ret = ctdb_stringn_pull(buf, buflen, mem_ctx,
 829                                         &cd->data.tun_var, &np);
 830                 break;
 831
 832         case CTDB_CONTROL_MODIFY_FLAGS:
 833                 ret = ctdb_node_flag_change_pull(buf, buflen, mem_ctx,
 834                                                  &cd->data.flag_change, &np);
 835                 break;
 836
 837         case CTDB_CONTROL_GET_TCP_TICKLE_LIST:
 838                 ret = ctdb_sock_addr_pull(buf, buflen, mem_ctx,
 839                                           &cd->data.addr, &np);
 840                 break;
 841
 842         case CTDB_CONTROL_SET_TCP_TICKLE_LIST:
 843                 ret = ctdb_tickle_list_pull(buf, buflen, mem_ctx,
 844                                             &cd->data.tickles, &np);
 845                 break;
 846
 847         case CTDB_CONTROL_DB_ATTACH_PERSISTENT:
 848                 ret = ctdb_string_pull(buf, buflen, mem_ctx,
 849                                        &cd->data.db_name, &np);
 850                 break;
 851
 852         case CTDB_CONTROL_UPDATE_RECORD:
 853                 ret = ctdb_rec_buffer_pull(buf, buflen, mem_ctx,
 854                                            &cd->data.recbuf, &np);
 855                 break;
 856
 857         case CTDB_CONTROL_SEND_GRATUITOUS_ARP:
 858                 ret = ctdb_addr_info_pull(buf, buflen, mem_ctx,
 859                                           &cd->data.addr_info, &np);
 860                 break;
 861
 862         case CTDB_CONTROL_WIPE_DATABASE:
 863                 ret = ctdb_transdb_pull(buf, buflen, mem_ctx,
 864                                        &cd->data.transdb, &np);
 865                 break;
 866
 867         case CTDB_CONTROL_TRY_DELETE_RECORDS:
 868                 ret = ctdb_rec_buffer_pull(buf, buflen, mem_ctx,
 869                                            &cd->data.recbuf, &np);
 870                 break;
 871
 872         case CTDB_CONTROL_ADD_PUBLIC_IP:
 873                 ret = ctdb_addr_info_pull(buf, buflen, mem_ctx,
 874                                           &cd->data.addr_info, &np);
 875                 break;
 876
 877         case CTDB_CONTROL_DEL_PUBLIC_IP:
 878                 ret = ctdb_addr_info_pull(buf, buflen, mem_ctx,
 879                                           &cd->data.addr_info, &np);
 880                 break;
 881
 882         case CTDB_CONTROL_RELEASE_IP:
 883                 ret = ctdb_public_ip_pull(buf, buflen, mem_ctx,
 884                                           &cd->data.pubip, &np);
 885                 break;
 886
 887         case CTDB_CONTROL_TAKEOVER_IP:
 888                 ret = ctdb_public_ip_pull(buf, buflen, mem_ctx,
 889                                           &cd->data.pubip, &np);
 890                 break;
 891
 892         case CTDB_CONTROL_TRAVERSE_KILL:
 893                 ret = ctdb_traverse_start_pull(buf, buflen, mem_ctx,
 894                                                &cd->data.traverse_start, &np);
 895                 break;
 896
 897         case CTDB_CONTROL_RECD_RECLOCK_LATENCY:
 898                 ret = ctdb_double_pull(buf, buflen, &cd->data.reclock_latency,
 899                                        &np);
 900                 break;
 901
 902         case CTDB_CONTROL_SET_LMASTERROLE:
 903                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.role, &np);
 904                 break;
 905
 906         case CTDB_CONTROL_SET_RECMASTERROLE:
 907                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.role, &np);
 908                 break;
 909
 910         case CTDB_CONTROL_SET_BAN_STATE:
 911                 ret = ctdb_ban_state_pull(buf, buflen, mem_ctx,
 912                                           &cd->data.ban_state, &np);
 913                 break;
 914
 915         case CTDB_CONTROL_REGISTER_NOTIFY:
 916                 ret = ctdb_notify_data_pull(buf, buflen, mem_ctx,
 917                                             &cd->data.notify, &np);
 918                 break;
 919
 920         case CTDB_CONTROL_DEREGISTER_NOTIFY:
 921                 ctdb_uint64_pull(buf, buflen, &cd->data.srvid, &np);
 922                 break;
 923
 924         case CTDB_CONTROL_TRANS3_COMMIT:
 925                 ret = ctdb_rec_buffer_pull(buf, buflen, mem_ctx,
 926                                            &cd->data.recbuf, &np);
 927                 break;
 928
 929         case CTDB_CONTROL_GET_DB_SEQNUM:
 930                 offset = 0;
 931                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
 932                 if (ret != 0) {
 933                         break;
 934                 }
 935                 offset += np;
 936                 ret = ctdb_uint32_pull(buf+offset, buflen-offset, &u32, &np);
 937                 offset += np;
 938                 np = offset;
 939                 break;
 940
 941         case CTDB_CONTROL_DB_SET_HEALTHY:
 942                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
 943                 break;
 944
 945         case CTDB_CONTROL_DB_GET_HEALTH:
 946                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
 947                 break;
 948
 949         case CTDB_CONTROL_GET_PUBLIC_IP_INFO:
 950                 ret = ctdb_sock_addr_pull(buf, buflen, mem_ctx,
 951                                           &cd->data.addr, &np);
 952                 break;
 953
 954         case CTDB_CONTROL_SET_IFACE_LINK_STATE:
 955                 ret = ctdb_iface_pull(buf, buflen, mem_ctx,
 956                                       &cd->data.iface, &np);
 957                 break;
 958
 959         case CTDB_CONTROL_TCP_ADD_DELAYED_UPDATE:
 960                 ret = ctdb_connection_pull(buf, buflen, mem_ctx,
 961                                            &cd->data.conn, &np);
 962                 break;
 963
 964         case CTDB_CONTROL_SCHEDULE_FOR_DELETION:
 965                 ret = ctdb_key_data_pull(buf, buflen, mem_ctx,
 966                                          &cd->data.key, &np);
 967                 break;
 968
 969         case CTDB_CONTROL_SET_DB_READONLY:
 970                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
 971                 break;
 972
 973         case CTDB_CONTROL_CHECK_SRVIDS:
 974                 break;
 975
 976         case CTDB_CONTROL_TRAVERSE_START_EXT:
 977                 ret = ctdb_traverse_start_ext_pull(buf, buflen, mem_ctx,
 978                                                    &cd->data.traverse_start_ext,
 979                                                    &np);
 980                 break;
 981
 982         case CTDB_CONTROL_GET_DB_STATISTICS:
 983                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
 984                 break;
 985
 986         case CTDB_CONTROL_SET_DB_STICKY:
 987                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
 988                 break;
 989
 990         case CTDB_CONTROL_TRAVERSE_ALL_EXT:
 991                 ret = ctdb_traverse_all_ext_pull(buf, buflen, mem_ctx,
 992                                                  &cd->data.traverse_all_ext,
 993                                                  &np);
 994                 break;
 995
 996         case CTDB_CONTROL_RECEIVE_RECORDS:
 997                 ret = ctdb_rec_buffer_pull(buf, buflen, mem_ctx,
 998                                            &cd->data.recbuf, &np);
 999                 break;
1000
1001         case CTDB_CONTROL_DB_DETACH:
1002                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
1003                 break;
1004
1005         case CTDB_CONTROL_DB_FREEZE:
1006                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
1007                 break;
1008
1009         case CTDB_CONTROL_DB_THAW:
1010                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
1011                 break;
1012
1013         case CTDB_CONTROL_DB_TRANSACTION_START:
1014                 ret = ctdb_transdb_pull(buf, buflen, mem_ctx,
1015                                         &cd->data.transdb, &np);
1016                 break;
1017
1018         case CTDB_CONTROL_DB_TRANSACTION_COMMIT:
1019                 ret = ctdb_transdb_pull(buf, buflen, mem_ctx,
1020                                         &cd->data.transdb, &np);
1021                 break;
1022
1023         case CTDB_CONTROL_DB_TRANSACTION_CANCEL:
1024                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
1025                 break;
1026
1027         case CTDB_CONTROL_DB_PULL:
1028                 ret = ctdb_pulldb_ext_pull(buf, buflen, mem_ctx,
1029                                            &cd->data.pulldb_ext, &np);
1030                 break;
1031
1032         case CTDB_CONTROL_DB_PUSH_START:
1033                 ret = ctdb_pulldb_ext_pull(buf, buflen, mem_ctx,
1034                                            &cd->data.pulldb_ext, &np);
1035                 break;
1036
1037         case CTDB_CONTROL_DB_PUSH_CONFIRM:
1038                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
1039                 break;
1040
1041         case CTDB_CONTROL_DB_OPEN_FLAGS:
1042                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
1043                 break;
1044
1045         case CTDB_CONTROL_DB_ATTACH_REPLICATED:
1046                 ret = ctdb_string_pull(buf, buflen, mem_ctx,
1047                                        &cd->data.db_name, &np);
1048                 break;
1049         }
1050
1051         if (ret != 0) {
1052                 return ret;
1053         }
1054
1055         *npull = np;
1056         return 0;
1057 }
1058
1059 static size_t ctdb_reply_control_data_len(struct ctdb_reply_control_data *cd)
1060 {
1061         size_t len = 0;
1062
1063         if (cd == NULL) {
1064                 return 0;
1065         }
1066
1067         switch (cd->opcode) {
1068         case CTDB_CONTROL_PROCESS_EXISTS:
1069                 break;
1070
1071         case CTDB_CONTROL_STATISTICS:
1072                 len = ctdb_statistics_len(cd->data.stats);
1073                 break;
1074
1075         case CTDB_CONTROL_PING:
1076                 break;
1077
1078         case CTDB_CONTROL_GETDBPATH:
1079                 len = ctdb_string_len(&cd->data.db_path);
1080                 break;
1081
1082         case CTDB_CONTROL_GETVNNMAP:
1083                 len = ctdb_vnn_map_len(cd->data.vnnmap);
1084                 break;
1085
1086         case CTDB_CONTROL_SETVNNMAP:
1087                 break;
1088
1089         case CTDB_CONTROL_GET_DEBUG:
1090                 len = ctdb_uint32_len(&cd->data.loglevel);
1091                 break;
1092
1093         case CTDB_CONTROL_SET_DEBUG:
1094                 break;
1095
1096         case CTDB_CONTROL_GET_DBMAP:
1097                 len = ctdb_dbid_map_len(cd->data.dbmap);
1098                 break;
1099
1100         case CTDB_CONTROL_PULL_DB:
1101                 len = ctdb_rec_buffer_len(cd->data.recbuf);
1102                 break;
1103
1104         case CTDB_CONTROL_PUSH_DB:
1105                 break;
1106
1107         case CTDB_CONTROL_GET_RECMODE:
1108                 break;
1109
1110         case CTDB_CONTROL_SET_RECMODE:
1111                 break;
1112
1113         case CTDB_CONTROL_STATISTICS_RESET:
1114                 break;
1115
1116         case CTDB_CONTROL_DB_ATTACH:
1117                 len = ctdb_uint32_len(&cd->data.db_id);
1118                 break;
1119
1120         case CTDB_CONTROL_SET_CALL:
1121                 break;
1122
1123         case CTDB_CONTROL_TRAVERSE_START:
1124                 break;
1125
1126         case CTDB_CONTROL_TRAVERSE_ALL:
1127                 break;
1128
1129         case CTDB_CONTROL_TRAVERSE_DATA:
1130                 break;
1131
1132         case CTDB_CONTROL_REGISTER_SRVID:
1133                 break;
1134
1135         case CTDB_CONTROL_DEREGISTER_SRVID:
1136                 break;
1137
1138         case CTDB_CONTROL_GET_DBNAME:
1139                 len = ctdb_string_len(&cd->data.db_name);
1140                 break;
1141
1142         case CTDB_CONTROL_ENABLE_SEQNUM:
1143                 break;
1144
1145         case CTDB_CONTROL_UPDATE_SEQNUM:
1146                 break;
1147
1148         case CTDB_CONTROL_DUMP_MEMORY:
1149                 len = ctdb_string_len(&cd->data.mem_str);
1150                 break;
1151
1152         case CTDB_CONTROL_GET_PID:
1153                 break;
1154
1155         case CTDB_CONTROL_GET_RECMASTER:
1156                 break;
1157
1158         case CTDB_CONTROL_SET_RECMASTER:
1159                 break;
1160
1161         case CTDB_CONTROL_FREEZE:
1162                 break;
1163
1164         case CTDB_CONTROL_GET_PNN:
1165                 break;
1166
1167         case CTDB_CONTROL_SHUTDOWN:
1168                 break;
1169
1170         case CTDB_CONTROL_GET_MONMODE:
1171                 break;
1172
1173         case CTDB_CONTROL_TCP_CLIENT:
1174                 break;
1175
1176         case CTDB_CONTROL_TCP_ADD:
1177                 break;
1178
1179         case CTDB_CONTROL_TCP_REMOVE:
1180                 break;
1181
1182         case CTDB_CONTROL_STARTUP:
1183                 break;
1184
1185         case CTDB_CONTROL_SET_TUNABLE:
1186                 break;
1187
1188         case CTDB_CONTROL_GET_TUNABLE:
1189                 len = ctdb_uint32_len(&cd->data.tun_value);
1190                 break;
1191
1192         case CTDB_CONTROL_LIST_TUNABLES:
1193                 len = ctdb_var_list_len(cd->data.tun_var_list);
1194                 break;
1195
1196         case CTDB_CONTROL_MODIFY_FLAGS:
1197                 break;
1198
1199         case CTDB_CONTROL_GET_ALL_TUNABLES:
1200                 len = ctdb_tunable_list_len(cd->data.tun_list);
1201                 break;
1202
1203         case CTDB_CONTROL_GET_TCP_TICKLE_LIST:
1204                 len = ctdb_tickle_list_len(cd->data.tickles);
1205                 break;
1206
1207         case CTDB_CONTROL_SET_TCP_TICKLE_LIST:
1208                 break;
1209
1210         case CTDB_CONTROL_DB_ATTACH_PERSISTENT:
1211                 len = ctdb_uint32_len(&cd->data.db_id);
1212                 break;
1213
1214         case CTDB_CONTROL_UPDATE_RECORD:
1215                 break;
1216
1217         case CTDB_CONTROL_SEND_GRATUITOUS_ARP:
1218                 break;
1219
1220         case CTDB_CONTROL_WIPE_DATABASE:
1221                 break;
1222
1223         case CTDB_CONTROL_UPTIME:
1224                 len = ctdb_uptime_len(cd->data.uptime);
1225                 break;
1226
1227         case CTDB_CONTROL_START_RECOVERY:
1228                 break;
1229
1230         case CTDB_CONTROL_END_RECOVERY:
1231                 break;
1232
1233         case CTDB_CONTROL_RELOAD_NODES_FILE:
1234                 break;
1235
1236         case CTDB_CONTROL_TRY_DELETE_RECORDS:
1237                 len = ctdb_rec_buffer_len(cd->data.recbuf);
1238                 break;
1239
1240         case CTDB_CONTROL_ENABLE_MONITOR:
1241                 break;
1242
1243         case CTDB_CONTROL_DISABLE_MONITOR:
1244                 break;
1245
1246         case CTDB_CONTROL_ADD_PUBLIC_IP:
1247                 break;
1248
1249         case CTDB_CONTROL_DEL_PUBLIC_IP:
1250                 break;
1251
1252         case CTDB_CONTROL_GET_CAPABILITIES:
1253                 len = ctdb_uint32_len(&cd->data.caps);
1254                 break;
1255
1256         case CTDB_CONTROL_RECD_PING:
1257                 break;
1258
1259         case CTDB_CONTROL_RELEASE_IP:
1260                 break;
1261
1262         case CTDB_CONTROL_TAKEOVER_IP:
1263                 break;
1264
1265         case CTDB_CONTROL_GET_PUBLIC_IPS:
1266                 len = ctdb_public_ip_list_len(cd->data.pubip_list);
1267                 break;
1268
1269         case CTDB_CONTROL_GET_NODEMAP:
1270                 len = ctdb_node_map_len(cd->data.nodemap);
1271                 break;
1272
1273         case CTDB_CONTROL_TRAVERSE_KILL:
1274                 break;
1275
1276         case CTDB_CONTROL_RECD_RECLOCK_LATENCY:
1277                 break;
1278
1279         case CTDB_CONTROL_GET_RECLOCK_FILE:
1280                 len = ctdb_string_len(&cd->data.reclock_file);
1281                 break;
1282
1283         case CTDB_CONTROL_STOP_NODE:
1284                 break;
1285
1286         case CTDB_CONTROL_CONTINUE_NODE:
1287                 break;
1288
1289         case CTDB_CONTROL_SET_LMASTERROLE:
1290                 break;
1291
1292         case CTDB_CONTROL_SET_RECMASTERROLE:
1293                 break;
1294
1295         case CTDB_CONTROL_SET_BAN_STATE:
1296                 break;
1297
1298         case CTDB_CONTROL_GET_BAN_STATE:
1299                 len = ctdb_ban_state_len(cd->data.ban_state);
1300                 break;
1301
1302         case CTDB_CONTROL_SET_DB_PRIORITY:
1303                 break;
1304
1305         case CTDB_CONTROL_GET_DB_PRIORITY:
1306                 break;
1307
1308         case CTDB_CONTROL_REGISTER_NOTIFY:
1309                 break;
1310
1311         case CTDB_CONTROL_DEREGISTER_NOTIFY:
1312                 break;
1313
1314         case CTDB_CONTROL_TRANS3_COMMIT:
1315                 break;
1316
1317         case CTDB_CONTROL_GET_DB_SEQNUM:
1318                 len = ctdb_uint64_len(&cd->data.seqnum);
1319                 break;
1320
1321         case CTDB_CONTROL_DB_SET_HEALTHY:
1322                 break;
1323
1324         case CTDB_CONTROL_DB_GET_HEALTH:
1325                 len = ctdb_string_len(&cd->data.reason);
1326                 break;
1327
1328         case CTDB_CONTROL_GET_PUBLIC_IP_INFO:
1329                 len = ctdb_public_ip_info_len(cd->data.ipinfo);
1330                 break;
1331
1332         case CTDB_CONTROL_GET_IFACES:
1333                 len = ctdb_iface_list_len(cd->data.iface_list);
1334                 break;
1335
1336         case CTDB_CONTROL_SET_IFACE_LINK_STATE:
1337                 break;
1338
1339         case CTDB_CONTROL_TCP_ADD_DELAYED_UPDATE:
1340                 break;
1341
1342         case CTDB_CONTROL_GET_STAT_HISTORY:
1343                 len = ctdb_statistics_list_len(cd->data.stats_list);
1344                 break;
1345
1346         case CTDB_CONTROL_SCHEDULE_FOR_DELETION:
1347                 break;
1348
1349         case CTDB_CONTROL_SET_DB_READONLY:
1350                 break;
1351
1352         case CTDB_CONTROL_CHECK_SRVIDS:
1353                 break;
1354
1355         case CTDB_CONTROL_TRAVERSE_START_EXT:
1356                 break;
1357
1358         case CTDB_CONTROL_GET_DB_STATISTICS:
1359                 len = ctdb_db_statistics_len(cd->data.dbstats);
1360                 break;
1361
1362         case CTDB_CONTROL_SET_DB_STICKY:
1363                 break;
1364
1365         case CTDB_CONTROL_RELOAD_PUBLIC_IPS:
1366                 break;
1367
1368         case CTDB_CONTROL_TRAVERSE_ALL_EXT:
1369                 break;
1370
1371         case CTDB_CONTROL_RECEIVE_RECORDS:
1372                 len = ctdb_rec_buffer_len(cd->data.recbuf);
1373                 break;
1374
1375         case CTDB_CONTROL_IPREALLOCATED:
1376                 break;
1377
1378         case CTDB_CONTROL_GET_RUNSTATE:
1379                 len = ctdb_uint32_len(&cd->data.runstate);
1380                 break;
1381
1382         case CTDB_CONTROL_DB_DETACH:
1383                 break;
1384
1385         case CTDB_CONTROL_GET_NODES_FILE:
1386                 len = ctdb_node_map_len(cd->data.nodemap);
1387                 break;
1388
1389         case CTDB_CONTROL_DB_FREEZE:
1390                 break;
1391
1392         case CTDB_CONTROL_DB_THAW:
1393                 break;
1394
1395         case CTDB_CONTROL_DB_TRANSACTION_START:
1396                 break;
1397
1398         case CTDB_CONTROL_DB_TRANSACTION_COMMIT:
1399                 break;
1400
1401         case CTDB_CONTROL_DB_TRANSACTION_CANCEL:
1402                 break;
1403
1404         case CTDB_CONTROL_DB_PULL:
1405                 len = ctdb_uint32_len(&cd->data.num_records);
1406                 break;
1407
1408         case CTDB_CONTROL_DB_PUSH_START:
1409                 break;
1410
1411         case CTDB_CONTROL_DB_PUSH_CONFIRM:
1412                 len = ctdb_uint32_len(&cd->data.num_records);
1413                 break;
1414
1415         case CTDB_CONTROL_DB_OPEN_FLAGS:
1416                 len = ctdb_int32_len(&cd->data.tdb_flags);
1417                 break;
1418
1419         case CTDB_CONTROL_DB_ATTACH_REPLICATED:
1420                 len = ctdb_uint32_len(&cd->data.db_id);
1421                 break;
1422         }
1423
1424         return len;
1425 }
1426
1427 static void ctdb_reply_control_data_push(struct ctdb_reply_control_data *cd,
1428                                          uint8_t *buf, size_t *npush)
1429 {
1430         size_t np = 0;
1431
1432         switch (cd->opcode) {
1433         case CTDB_CONTROL_STATISTICS:
1434                 ctdb_statistics_push(cd->data.stats, buf, &np);
1435                 break;
1436
1437         case CTDB_CONTROL_GETDBPATH:
1438                 ctdb_string_push(&cd->data.db_path, buf, &np);
1439                 break;
1440
1441         case CTDB_CONTROL_GETVNNMAP:
1442                 ctdb_vnn_map_push(cd->data.vnnmap, buf, &np);
1443                 break;
1444
1445         case CTDB_CONTROL_GET_DEBUG:
1446                 ctdb_uint32_push(&cd->data.loglevel, buf, &np);
1447                 break;
1448
1449         case CTDB_CONTROL_GET_DBMAP:
1450                 ctdb_dbid_map_push(cd->data.dbmap, buf, &np);
1451                 break;
1452
1453         case CTDB_CONTROL_PULL_DB:
1454                 ctdb_rec_buffer_push(cd->data.recbuf, buf, &np);
1455                 break;
1456
1457         case CTDB_CONTROL_PUSH_DB:
1458                 break;
1459
1460         case CTDB_CONTROL_DB_ATTACH:
1461                 ctdb_uint32_push(&cd->data.db_id, buf, &np);
1462                 break;
1463
1464         case CTDB_CONTROL_GET_DBNAME:
1465                 ctdb_string_push(&cd->data.db_name, buf, &np);
1466                 break;
1467
1468         case CTDB_CONTROL_DUMP_MEMORY:
1469                 ctdb_string_push(&cd->data.mem_str, buf, &np);
1470                 break;
1471
1472         case CTDB_CONTROL_GET_PID:
1473                 break;
1474
1475         case CTDB_CONTROL_GET_RECMASTER:
1476                 break;
1477
1478         case CTDB_CONTROL_GET_TUNABLE:
1479                 ctdb_uint32_push(&cd->data.tun_value, buf, &np);
1480                 break;
1481
1482         case CTDB_CONTROL_LIST_TUNABLES:
1483                 ctdb_var_list_push(cd->data.tun_var_list, buf, &np);
1484                 break;
1485
1486         case CTDB_CONTROL_GET_ALL_TUNABLES:
1487                 ctdb_tunable_list_push(cd->data.tun_list, buf, &np);
1488                 break;
1489
1490         case CTDB_CONTROL_GET_TCP_TICKLE_LIST:
1491                 ctdb_tickle_list_push(cd->data.tickles, buf, &np);
1492                 break;
1493
1494         case CTDB_CONTROL_DB_ATTACH_PERSISTENT:
1495                 ctdb_uint32_push(&cd->data.db_id, buf, &np);
1496                 break;
1497
1498         case CTDB_CONTROL_UPTIME:
1499                 ctdb_uptime_push(cd->data.uptime, buf, &np);
1500                 break;
1501
1502         case CTDB_CONTROL_TRY_DELETE_RECORDS:
1503                 ctdb_rec_buffer_push(cd->data.recbuf, buf, &np);
1504                 break;
1505
1506         case CTDB_CONTROL_GET_CAPABILITIES:
1507                 ctdb_uint32_push(&cd->data.caps, buf, &np);
1508                 break;
1509
1510         case CTDB_CONTROL_GET_PUBLIC_IPS:
1511                 ctdb_public_ip_list_push(cd->data.pubip_list, buf, &np);
1512                 break;
1513
1514         case CTDB_CONTROL_GET_NODEMAP:
1515                 ctdb_node_map_push(cd->data.nodemap, buf, &np);
1516                 break;
1517
1518         case CTDB_CONTROL_GET_RECLOCK_FILE:
1519                 ctdb_string_push(&cd->data.reclock_file, buf, &np);
1520                 break;
1521
1522         case CTDB_CONTROL_GET_BAN_STATE:
1523                 ctdb_ban_state_push(cd->data.ban_state, buf, &np);
1524                 break;
1525
1526         case CTDB_CONTROL_GET_DB_PRIORITY:
1527                 break;
1528
1529         case CTDB_CONTROL_GET_DB_SEQNUM:
1530                 ctdb_uint64_push(&cd->data.seqnum, buf, &np);
1531                 break;
1532
1533         case CTDB_CONTROL_DB_GET_HEALTH:
1534                 ctdb_string_push(&cd->data.reason, buf, &np);
1535                 break;
1536
1537         case CTDB_CONTROL_GET_PUBLIC_IP_INFO:
1538                 ctdb_public_ip_info_push(cd->data.ipinfo, buf, &np);
1539                 break;
1540
1541         case CTDB_CONTROL_GET_IFACES:
1542                 ctdb_iface_list_push(cd->data.iface_list, buf, &np);
1543                 break;
1544
1545         case CTDB_CONTROL_GET_STAT_HISTORY:
1546                 ctdb_statistics_list_push(cd->data.stats_list, buf, &np);
1547                 break;
1548
1549         case CTDB_CONTROL_CHECK_SRVIDS:
1550                 break;
1551
1552         case CTDB_CONTROL_GET_DB_STATISTICS:
1553                 ctdb_db_statistics_push(cd->data.dbstats, buf, &np);
1554                 break;
1555
1556         case CTDB_CONTROL_RECEIVE_RECORDS:
1557                 ctdb_rec_buffer_push(cd->data.recbuf, buf, &np);
1558                 break;
1559
1560         case CTDB_CONTROL_GET_RUNSTATE:
1561                 ctdb_uint32_push(&cd->data.runstate, buf, &np);
1562                 break;
1563
1564         case CTDB_CONTROL_GET_NODES_FILE:
1565                 ctdb_node_map_push(cd->data.nodemap, buf, &np);
1566                 break;
1567
1568         case CTDB_CONTROL_DB_PULL:
1569                 ctdb_uint32_push(&cd->data.num_records, buf, &np);
1570                 break;
1571
1572         case CTDB_CONTROL_DB_PUSH_CONFIRM:
1573                 ctdb_uint32_push(&cd->data.num_records, buf, &np);
1574                 break;
1575
1576         case CTDB_CONTROL_DB_OPEN_FLAGS:
1577                 ctdb_int32_push(&cd->data.tdb_flags, buf, &np);
1578                 break;
1579
1580         case CTDB_CONTROL_DB_ATTACH_REPLICATED:
1581                 ctdb_uint32_push(&cd->data.db_id, buf, &np);
1582                 break;
1583         }
1584
1585         *npush = np;
1586 }
1587
1588 static int ctdb_reply_control_data_pull(uint8_t *buf, size_t buflen,
1589                                         uint32_t opcode, TALLOC_CTX *mem_ctx,
1590                                         struct ctdb_reply_control_data *cd,
1591                                         size_t *npull)
1592 {
1593         size_t np = 0;
1594         int ret = 0;
1595
1596         cd->opcode = opcode;
1597
1598         switch (opcode) {
1599         case CTDB_CONTROL_STATISTICS:
1600                 ret = ctdb_statistics_pull(buf, buflen, mem_ctx,
1601                                            &cd->data.stats, &np);
1602                 break;
1603
1604         case CTDB_CONTROL_GETDBPATH:
1605                 ret = ctdb_string_pull(buf, buflen, mem_ctx,
1606                                        &cd->data.db_path, &np);
1607                 break;
1608
1609         case CTDB_CONTROL_GETVNNMAP:
1610                 ret = ctdb_vnn_map_pull(buf, buflen, mem_ctx,
1611                                         &cd->data.vnnmap, &np);
1612                 break;
1613
1614         case CTDB_CONTROL_GET_DEBUG:
1615                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.loglevel, &np);
1616                 break;
1617
1618         case CTDB_CONTROL_GET_DBMAP:
1619                 ret = ctdb_dbid_map_pull(buf, buflen, mem_ctx,
1620                                          &cd->data.dbmap, &np);
1621                 break;
1622
1623         case CTDB_CONTROL_PULL_DB:
1624                 ret = ctdb_rec_buffer_pull(buf, buflen, mem_ctx,
1625                                            &cd->data.recbuf, &np);
1626                 break;
1627
1628         case CTDB_CONTROL_PUSH_DB:
1629                 break;
1630
1631         case CTDB_CONTROL_DB_ATTACH:
1632                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
1633                 break;
1634
1635         case CTDB_CONTROL_GET_DBNAME:
1636                 ret = ctdb_string_pull(buf, buflen, mem_ctx,
1637                                        &cd->data.db_name, &np);
1638                 break;
1639
1640         case CTDB_CONTROL_DUMP_MEMORY:
1641                 ret = ctdb_string_pull(buf, buflen, mem_ctx,
1642                                        &cd->data.mem_str, &np);
1643                 break;
1644
1645         case CTDB_CONTROL_GET_PID:
1646                 break;
1647
1648         case CTDB_CONTROL_GET_RECMASTER:
1649                 break;
1650
1651         case CTDB_CONTROL_GET_TUNABLE:
1652                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.tun_value,
1653                                        &np);
1654                 break;
1655
1656         case CTDB_CONTROL_LIST_TUNABLES:
1657                 ret = ctdb_var_list_pull(buf, buflen, mem_ctx,
1658                                          &cd->data.tun_var_list, &np);
1659                 break;
1660
1661         case CTDB_CONTROL_GET_ALL_TUNABLES:
1662                 ret = ctdb_tunable_list_pull(buf, buflen, mem_ctx,
1663                                              &cd->data.tun_list, &np);
1664                 break;
1665
1666         case CTDB_CONTROL_GET_TCP_TICKLE_LIST:
1667                 ret = ctdb_tickle_list_pull(buf, buflen, mem_ctx,
1668                                             &cd->data.tickles, &np);
1669                 break;
1670
1671         case CTDB_CONTROL_DB_ATTACH_PERSISTENT:
1672                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
1673                 break;
1674
1675         case CTDB_CONTROL_UPTIME:
1676                 ret = ctdb_uptime_pull(buf, buflen, mem_ctx,
1677                                        &cd->data.uptime, &np);
1678                 break;
1679
1680         case CTDB_CONTROL_TRY_DELETE_RECORDS:
1681                 ctdb_rec_buffer_pull(buf, buflen, mem_ctx,
1682                                      &cd->data.recbuf, &np);
1683                 break;
1684
1685         case CTDB_CONTROL_GET_CAPABILITIES:
1686                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.caps, &np);
1687                 break;
1688
1689         case CTDB_CONTROL_GET_PUBLIC_IPS:
1690                 ret = ctdb_public_ip_list_pull(buf, buflen, mem_ctx,
1691                                                &cd->data.pubip_list, &np);
1692                 break;
1693
1694         case CTDB_CONTROL_GET_NODEMAP:
1695                 ret = ctdb_node_map_pull(buf, buflen, mem_ctx,
1696                                          &cd->data.nodemap, &np);
1697                 break;
1698
1699         case CTDB_CONTROL_GET_RECLOCK_FILE:
1700                 ret = ctdb_string_pull(buf, buflen, mem_ctx,
1701                                        &cd->data.reclock_file, &np);
1702                 break;
1703
1704         case CTDB_CONTROL_GET_BAN_STATE:
1705                 ret = ctdb_ban_state_pull(buf, buflen, mem_ctx,
1706                                           &cd->data.ban_state, &np);
1707                 break;
1708
1709         case CTDB_CONTROL_GET_DB_PRIORITY:
1710                 break;
1711
1712         case CTDB_CONTROL_GET_DB_SEQNUM:
1713                 ret = ctdb_uint64_pull(buf, buflen, &cd->data.seqnum, &np);
1714                 break;
1715
1716         case CTDB_CONTROL_DB_GET_HEALTH:
1717                 ret = ctdb_string_pull(buf, buflen, mem_ctx,
1718                                        &cd->data.reason, &np);
1719                 break;
1720
1721         case CTDB_CONTROL_GET_PUBLIC_IP_INFO:
1722                 ret = ctdb_public_ip_info_pull(buf, buflen, mem_ctx,
1723                                                &cd->data.ipinfo, &np);
1724                 break;
1725
1726         case CTDB_CONTROL_GET_IFACES:
1727                 ret = ctdb_iface_list_pull(buf, buflen, mem_ctx,
1728                                            &cd->data.iface_list, &np);
1729                 break;
1730
1731         case CTDB_CONTROL_GET_STAT_HISTORY:
1732                 ret = ctdb_statistics_list_pull(buf, buflen, mem_ctx,
1733                                                 &cd->data.stats_list, &np);
1734                 break;
1735
1736         case CTDB_CONTROL_CHECK_SRVIDS:
1737                 break;
1738
1739         case CTDB_CONTROL_GET_DB_STATISTICS:
1740                 ret = ctdb_db_statistics_pull(buf, buflen, mem_ctx,
1741                                               &cd->data.dbstats, &np);
1742                 break;
1743
1744         case CTDB_CONTROL_RECEIVE_RECORDS:
1745                 ret = ctdb_rec_buffer_pull(buf, buflen, mem_ctx,
1746                                            &cd->data.recbuf, &np);
1747                 break;
1748
1749         case CTDB_CONTROL_GET_RUNSTATE:
1750                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.runstate, &np);
1751                 break;
1752
1753         case CTDB_CONTROL_GET_NODES_FILE:
1754                 ret = ctdb_node_map_pull(buf, buflen, mem_ctx,
1755                                          &cd->data.nodemap, &np);
1756                 break;
1757
1758         case CTDB_CONTROL_DB_PULL:
1759                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.num_records,
1760                                        &np);
1761                 break;
1762
1763         case CTDB_CONTROL_DB_PUSH_CONFIRM:
1764                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.num_records,
1765                                        &np);
1766                 break;
1767
1768         case CTDB_CONTROL_DB_OPEN_FLAGS:
1769                 ret = ctdb_int32_pull(buf, buflen, &cd->data.tdb_flags, &np);
1770                 break;
1771
1772         case CTDB_CONTROL_DB_ATTACH_REPLICATED:
1773                 ret = ctdb_uint32_pull(buf, buflen, &cd->data.db_id, &np);
1774                 break;
1775         }
1776
1777         if (ret != 0) {
1778                 return ret;
1779         }
1780
1781         *npull = np;
1782         return 0;
1783 }
1784
1785 size_t ctdb_req_control_len(struct ctdb_req_header *h,
1786                             struct ctdb_req_control *c)
1787 {
1788         return offsetof(struct ctdb_req_control_wire, data) +
1789                 ctdb_req_control_data_len(&c->rdata);
1790 }
1791
1792 int ctdb_req_control_push(struct ctdb_req_header *h,
1793                           struct ctdb_req_control *request,
1794                           uint8_t *buf, size_t *buflen)
1795 {
1796         struct ctdb_req_control_wire *wire =
1797                 (struct ctdb_req_control_wire *)buf;
1798         size_t length, np;
1799
1800         length = ctdb_req_control_len(h, request);
1801         if (*buflen < length) {
1802                 *buflen = length;
1803                 return EMSGSIZE;
1804         }
1805
1806         h->length = *buflen;
1807         ctdb_req_header_push(h, (uint8_t *)&wire->hdr, &np);
1808
1809         wire->opcode = request->opcode;
1810         wire->pad = request->pad;
1811         wire->srvid = request->srvid;
1812         wire->client_id = request->client_id;
1813         wire->flags = request->flags;
1814
1815         wire->datalen = ctdb_req_control_data_len(&request->rdata);
1816         ctdb_req_control_data_push(&request->rdata, wire->data, &np);
1817
1818         return 0;
1819 }
1820
1821 int ctdb_req_control_pull(uint8_t *buf, size_t buflen,
1822                           struct ctdb_req_header *h,
1823                           TALLOC_CTX *mem_ctx,
1824                           struct ctdb_req_control *c)
1825 {
1826         struct ctdb_req_control_wire *wire =
1827                 (struct ctdb_req_control_wire *)buf;
1828         size_t length, np;
1829         int ret;
1830
1831         length = offsetof(struct ctdb_req_control_wire, data);
1832         if (buflen < length) {
1833                 return EMSGSIZE;
1834         }
1835         if (wire->datalen > buflen) {
1836                 return EMSGSIZE;
1837         }
1838         if (length + wire->datalen < length) {
1839                 return EMSGSIZE;
1840         }
1841         if (buflen < length + wire->datalen) {
1842                 return EMSGSIZE;
1843         }
1844
1845         if (h != NULL) {
1846                 ret = ctdb_req_header_pull((uint8_t *)&wire->hdr, buflen, h,
1847                                            &np);
1848                 if (ret != 0) {
1849                         return ret;
1850                 }
1851         }
1852
1853         c->opcode = wire->opcode;
1854         c->pad = wire->pad;
1855         c->srvid = wire->srvid;
1856         c->client_id = wire->client_id;
1857         c->flags = wire->flags;
1858
1859         ret = ctdb_req_control_data_pull(wire->data, wire->datalen,
1860                                          c->opcode, mem_ctx, &c->rdata, &np);
1861         if (ret != 0) {
1862                 return ret;
1863         }
1864
1865         return 0;
1866 }
1867
1868 size_t ctdb_reply_control_len(struct ctdb_req_header *h,
1869                               struct ctdb_reply_control *c)
1870 {
1871         return offsetof(struct ctdb_reply_control_wire, data) +
1872                 (c->status == 0 ?
1873                         ctdb_reply_control_data_len(&c->rdata) :
1874                         ctdb_string_len(&c->errmsg));
1875 }
1876
1877 int ctdb_reply_control_push(struct ctdb_req_header *h,
1878                             struct ctdb_reply_control *reply,
1879                             uint8_t *buf, size_t *buflen)
1880 {
1881         struct ctdb_reply_control_wire *wire =
1882                 (struct ctdb_reply_control_wire *)buf;
1883         size_t length, np;
1884
1885         length = ctdb_reply_control_len(h, reply);
1886         if (*buflen < length) {
1887                 *buflen = length;
1888                 return EMSGSIZE;
1889         }
1890
1891         h->length = *buflen;
1892         ctdb_req_header_push(h, (uint8_t *)&wire->hdr, &np);
1893
1894         wire->status = reply->status;
1895
1896         if (reply->status == 0) {
1897                 wire->datalen = ctdb_reply_control_data_len(&reply->rdata);
1898                 wire->errorlen = 0;
1899                 ctdb_reply_control_data_push(&reply->rdata, wire->data, &np);
1900         } else {
1901                 wire->datalen = 0;
1902                 wire->errorlen = ctdb_string_len(&reply->errmsg);
1903                 ctdb_string_push(&reply->errmsg, wire->data + wire->datalen,
1904                                  &np);
1905         }
1906
1907         return 0;
1908 }
1909
1910 int ctdb_reply_control_pull(uint8_t *buf, size_t buflen, uint32_t opcode,
1911                             struct ctdb_req_header *h,
1912                             TALLOC_CTX *mem_ctx,
1913                             struct ctdb_reply_control *c)
1914 {
1915         struct ctdb_reply_control_wire *wire =
1916                 (struct ctdb_reply_control_wire *)buf;
1917         size_t length, np;
1918         int ret;
1919
1920         length = offsetof(struct ctdb_reply_control_wire, data);
1921         if (buflen < length) {
1922                 return EMSGSIZE;
1923         }
1924         if (wire->datalen > buflen || wire->errorlen > buflen) {
1925                 return EMSGSIZE;
1926         }
1927         if (length + wire->datalen < length) {
1928                 return EMSGSIZE;
1929         }
1930         if (length + wire->datalen + wire->errorlen < length) {
1931                 return EMSGSIZE;
1932         }
1933         if (buflen < length + wire->datalen + wire->errorlen) {
1934                 return EMSGSIZE;
1935         }
1936
1937         if (h != NULL) {
1938                 ret = ctdb_req_header_pull((uint8_t *)&wire->hdr, buflen, h,
1939                                            &np);
1940                 if (ret != 0) {
1941                         return ret;
1942                 }
1943         }
1944
1945         c->status = wire->status;
1946
1947         if (c->status != -1) {
1948                 ret = ctdb_reply_control_data_pull(wire->data, wire->datalen,
1949                                                    opcode, mem_ctx,
1950                                                    &c->rdata, &np);
1951                 if (ret != 0) {
1952                         return ret;
1953                 }
1954         }
1955
1956         ret = ctdb_string_pull(wire->data + wire->datalen, wire->errorlen,
1957                                mem_ctx, &c->errmsg, &np);
1958         if (ret != 0) {
1959                 return ret;
1960         }
1961
1962         return 0;
1963 }