ctdb/include/ctdb_private.h

   1 /*
   2    ctdb database library
   3
   4    Copyright (C) Andrew Tridgell  2006
   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 #ifndef _CTDB_PRIVATE_H
  21 #define _CTDB_PRIVATE_H
  22
  23 #include "ctdb_client.h"
  24 #include <sys/socket.h>
  25
  26 /*
  27   array of tcp connections
  28  */
  29 struct ctdb_tcp_array {
  30         uint32_t num;
  31         struct ctdb_connection *connections;
  32 };
  33
  34 /*
  35   an installed ctdb remote call
  36 */
  37 struct ctdb_registered_call {
  38         struct ctdb_registered_call *next, *prev;
  39         uint32_t id;
  40         ctdb_fn_t fn;
  41 };
  42
  43 /*
  44   check that a pnn is valid
  45  */
  46 #define ctdb_validate_pnn(ctdb, pnn) (((uint32_t)(pnn)) < (ctdb)->num_nodes)
  47
  48
  49 /* called from the queue code when a packet comes in. Called with data==NULL
  50    on error */
  51 typedef void (*ctdb_queue_cb_fn_t)(uint8_t *data, size_t length,
  52                                    void *private_data);
  53
  54 /* used for callbacks in ctdb_control requests */
  55 typedef void (*ctdb_control_callback_fn_t)(struct ctdb_context *,
  56                                            int32_t status, TDB_DATA data,
  57                                            const char *errormsg,
  58                                            void *private_data);
  59 /*
  60   structure describing a connected client in the daemon
  61  */
  62 struct ctdb_client {
  63         struct ctdb_context *ctdb;
  64         int fd;
  65         struct ctdb_queue *queue;
  66         uint32_t client_id;
  67         pid_t pid;
  68         struct ctdb_tcp_list *tcp_list;
  69         uint32_t db_id;
  70         uint32_t num_persistent_updates;
  71         struct ctdb_client_notify_list *notify;
  72 };
  73
  74 /*
  75   state associated with one node
  76 */
  77 struct ctdb_node {
  78         struct ctdb_context *ctdb;
  79         ctdb_sock_addr address;
  80         const char *name; /* for debug messages */
  81         void *private_data; /* private to transport */
  82         uint32_t pnn;
  83         uint32_t flags;
  84
  85         /* used by the dead node monitoring */
  86         uint32_t dead_count;
  87         uint32_t rx_cnt;
  88         uint32_t tx_cnt;
  89
  90         /* a list of controls pending to this node, so we can time them out quickly
  91            if the node becomes disconnected */
  92         struct daemon_control_state *pending_controls;
  93
  94         /* used by the recovery dameon to track when a node should be banned */
  95         struct ctdb_banning_state *ban_state;
  96 };
  97
  98 /*
  99   transport specific methods
 100 */
 101 struct ctdb_methods {
 102         int (*initialise)(struct ctdb_context *); /* initialise transport structures */
 103         int (*start)(struct ctdb_context *); /* start the transport */
 104         int (*add_node)(struct ctdb_node *); /* setup a new node */
 105         int (*connect_node)(struct ctdb_node *); /* connect to node */
 106         int (*queue_pkt)(struct ctdb_node *, uint8_t *data, uint32_t length);
 107         void *(*allocate_pkt)(TALLOC_CTX *mem_ctx, size_t );
 108         void (*shutdown)(struct ctdb_context *); /* shutdown transport */
 109         void (*restart)(struct ctdb_node *); /* stop and restart the connection */
 110 };
 111
 112 /*
 113   transport calls up to the ctdb layer
 114 */
 115 struct ctdb_upcalls {
 116         /* recv_pkt is called when a packet comes in */
 117         void (*recv_pkt)(struct ctdb_context *, uint8_t *data, uint32_t length);
 118
 119         /* node_dead is called when an attempt to send to a node fails */
 120         void (*node_dead)(struct ctdb_node *);
 121
 122         /* node_connected is called when a connection to a node is established */
 123         void (*node_connected)(struct ctdb_node *);
 124 };
 125
 126 /* additional data required for the daemon mode */
 127 struct ctdb_daemon_data {
 128         int sd;
 129         char *name;
 130         struct ctdb_queue *queue;
 131 };
 132
 133
 134 #define CTDB_UPDATE_STAT(ctdb, counter, value) \
 135         {                                                                               \
 136                 if (value > ctdb->statistics.counter) {                                 \
 137                         ctdb->statistics.counter = value;                               \
 138                 }                                                                       \
 139                 if (value > ctdb->statistics_current.counter) {                         \
 140                         ctdb->statistics_current.counter = value;                       \
 141                 }                                                                       \
 142         }
 143
 144 #define CTDB_INCREMENT_STAT(ctdb, counter) \
 145         {                                                                               \
 146                 ctdb->statistics.counter++;                                             \
 147                 ctdb->statistics_current.counter++;                                     \
 148         }
 149
 150 #define CTDB_DECREMENT_STAT(ctdb, counter) \
 151         {                                                                               \
 152                 if (ctdb->statistics.counter > 0)                                       \
 153                         ctdb->statistics.counter--;                                     \
 154                 if (ctdb->statistics_current.counter > 0)                               \
 155                         ctdb->statistics_current.counter--;                             \
 156         }
 157
 158 #define CTDB_INCREMENT_DB_STAT(ctdb_db, counter) \
 159         {                                                                               \
 160                 ctdb_db->statistics.counter++;                                          \
 161         }
 162
 163 #define CTDB_DECREMENT_DB_STAT(ctdb_db, counter) \
 164         {                                                                               \
 165                 if (ctdb_db->statistics.counter > 0)                                    \
 166                         ctdb_db->statistics.counter--;                                  \
 167         }
 168
 169 #define CTDB_UPDATE_RECLOCK_LATENCY(ctdb, name, counter, value) \
 170         {                                                                               \
 171                 if (value > ctdb->statistics.counter.max)                               \
 172                         ctdb->statistics.counter.max = value;                           \
 173                 if (value > ctdb->statistics_current.counter.max)                       \
 174                         ctdb->statistics_current.counter.max = value;                   \
 175                                                                                         \
 176                 if (ctdb->statistics.counter.num == 0 ||                                \
 177                     value < ctdb->statistics.counter.min)                               \
 178                         ctdb->statistics.counter.min = value;                           \
 179                 if (ctdb->statistics_current.counter.num == 0 ||                        \
 180                     value < ctdb->statistics_current.counter.min)                       \
 181                         ctdb->statistics_current.counter.min = value;                   \
 182                                                                                         \
 183                 ctdb->statistics.counter.total += value;                                \
 184                 ctdb->statistics_current.counter.total += value;                        \
 185                                                                                         \
 186                 ctdb->statistics.counter.num++;                                         \
 187                 ctdb->statistics_current.counter.num++;                                 \
 188                                                                                         \
 189                 if (ctdb->tunable.reclock_latency_ms != 0) {                            \
 190                         if (value*1000 > ctdb->tunable.reclock_latency_ms) {            \
 191                                 DEBUG(DEBUG_ERR,                                        \
 192                                       ("High RECLOCK latency %fs for operation %s\n",   \
 193                                        value, name));                                   \
 194                         }                                                               \
 195                 }                                                                       \
 196         }
 197
 198 #define CTDB_UPDATE_DB_LATENCY(ctdb_db, operation, counter, value)                      \
 199         {                                                                               \
 200                 if (value > ctdb_db->statistics.counter.max)                            \
 201                         ctdb_db->statistics.counter.max = value;                        \
 202                 if (ctdb_db->statistics.counter.num == 0 ||                             \
 203                     value < ctdb_db->statistics.counter.min)                            \
 204                         ctdb_db->statistics.counter.min = value;                        \
 205                                                                                         \
 206                 ctdb_db->statistics.counter.total += value;                             \
 207                 ctdb_db->statistics.counter.num++;                                      \
 208                                                                                         \
 209                 if (ctdb_db->ctdb->tunable.log_latency_ms != 0) {                       \
 210                         if (value*1000 > ctdb_db->ctdb->tunable.log_latency_ms) {       \
 211                                 DEBUG(DEBUG_ERR,                                        \
 212                                       ("High latency %.6fs for operation %s on database %s\n",\
 213                                        value, operation, ctdb_db->db_name));            \
 214                         }                                                               \
 215                 }                                                                       \
 216         }
 217
 218 #define CTDB_UPDATE_LATENCY(ctdb, db, operation, counter, t) \
 219         {                                                                               \
 220                 double l = timeval_elapsed(&t);                                         \
 221                                                                                         \
 222                 if (l > ctdb->statistics.counter.max)                                   \
 223                         ctdb->statistics.counter.max = l;                               \
 224                 if (l > ctdb->statistics_current.counter.max)                           \
 225                         ctdb->statistics_current.counter.max = l;                       \
 226                                                                                         \
 227                 if (ctdb->statistics.counter.num == 0 ||                                \
 228                     l < ctdb->statistics.counter.min)                                   \
 229                         ctdb->statistics.counter.min = l;                               \
 230                 if (ctdb->statistics_current.counter.num == 0 ||                        \
 231                     l < ctdb->statistics_current.counter.min)                           \
 232                         ctdb->statistics_current.counter.min = l;                       \
 233                                                                                         \
 234                 ctdb->statistics.counter.total += l;                                    \
 235                 ctdb->statistics_current.counter.total += l;                            \
 236                                                                                         \
 237                 ctdb->statistics.counter.num++;                                         \
 238                 ctdb->statistics_current.counter.num++;                                 \
 239                                                                                         \
 240                 if (ctdb->tunable.log_latency_ms != 0) {                                \
 241                         if (l*1000 > ctdb->tunable.log_latency_ms) {                    \
 242                                 DEBUG(DEBUG_WARNING,                                    \
 243                                       ("High latency %.6fs for operation %s on database %s\n",\
 244                                        l, operation, db->db_name));                     \
 245                         }                                                               \
 246                 }                                                                       \
 247         }
 248
 249
 250 struct ctdb_cluster_mutex_handle;
 251
 252 enum ctdb_freeze_mode {CTDB_FREEZE_NONE, CTDB_FREEZE_PENDING, CTDB_FREEZE_FROZEN};
 253
 254 /* main state of the ctdb daemon */
 255 struct ctdb_context {
 256         struct tevent_context *ev;
 257         struct timeval ctdbd_start_time;
 258         struct timeval last_recovery_started;
 259         struct timeval last_recovery_finished;
 260         uint32_t recovery_mode;
 261         TALLOC_CTX *tickle_update_context;
 262         TALLOC_CTX *keepalive_ctx;
 263         TALLOC_CTX *check_public_ifaces_ctx;
 264         struct ctdb_tunable_list tunable;
 265         enum ctdb_freeze_mode freeze_mode;
 266         struct ctdb_freeze_handle *freeze_handle;
 267         bool freeze_transaction_started;
 268         uint32_t freeze_transaction_id;
 269         ctdb_sock_addr *address;
 270         const char *name;
 271         const char *db_directory;
 272         const char *db_directory_persistent;
 273         const char *db_directory_state;
 274         struct tdb_wrap *db_persistent_health;
 275         uint32_t db_persistent_startup_generation;
 276         uint64_t db_persistent_check_errors;
 277         uint64_t max_persistent_check_errors;
 278         const char *transport;
 279         const char *recovery_lock;
 280         uint32_t pnn; /* our own pnn */
 281         uint32_t num_nodes;
 282         uint32_t num_connected;
 283         unsigned flags;
 284         uint32_t capabilities;
 285         struct reqid_context *idr;
 286         struct ctdb_node **nodes; /* array of nodes in the cluster - indexed by vnn */
 287         struct ctdb_vnn *vnn; /* list of public ip addresses and interfaces */
 288         struct ctdb_interface *ifaces; /* list of local interfaces */
 289         char *err_msg;
 290         const struct ctdb_methods *methods; /* transport methods */
 291         const struct ctdb_upcalls *upcalls; /* transport upcalls */
 292         void *private_data; /* private to transport */
 293         struct ctdb_db_context *db_list;
 294         struct srvid_context *srv;
 295         struct ctdb_daemon_data daemon;
 296         struct ctdb_statistics statistics;
 297         struct ctdb_statistics statistics_current;
 298 #define MAX_STAT_HISTORY 100
 299         struct ctdb_statistics statistics_history[MAX_STAT_HISTORY];
 300         struct ctdb_vnn_map *vnn_map;
 301         uint32_t num_clients;
 302         uint32_t recovery_master;
 303         struct ctdb_client_ip *client_ip_list;
 304         bool do_checkpublicip;
 305         bool do_setsched;
 306         const char *event_script_dir;
 307         const char *notification_script;
 308         const char *default_public_interface;
 309         pid_t ctdbd_pid;
 310         pid_t recoverd_pid;
 311         enum ctdb_runstate runstate;
 312         struct ctdb_monitor_state *monitor;
 313         int start_as_disabled;
 314         int start_as_stopped;
 315         bool valgrinding;
 316         uint32_t *recd_ping_count;
 317         TALLOC_CTX *recd_ctx; /* a context used to track recoverd monitoring events */
 318         TALLOC_CTX *release_ips_ctx; /* a context used to automatically drop all IPs if we fail to recover the node */
 319
 320         TALLOC_CTX *event_script_ctx;
 321         int active_events;
 322
 323         struct ctdb_event_script_state *current_monitor;
 324         struct ctdb_script_list_old *last_status[CTDB_EVENT_MAX];
 325
 326         TALLOC_CTX *banning_ctx;
 327
 328         struct ctdb_vacuum_child_context *vacuumers;
 329
 330         /* mapping from pid to ctdb_client * */
 331         struct ctdb_client_pid_list *client_pids;
 332
 333         /* Used to defer db attach requests while in recovery mode */
 334         struct ctdb_deferred_attach_context *deferred_attach;
 335
 336         /* if we are a child process, do we have a domain socket to send controls on */
 337         bool can_send_controls;
 338
 339         /* list of event script callback functions that are active */
 340         struct event_script_callback *script_callbacks;
 341
 342         struct ctdb_reloadips_handle *reload_ips;
 343
 344         const char *nodes_file;
 345         const char *public_addresses_file;
 346         struct trbt_tree *child_processes;
 347
 348         /* Used for locking record/db/alldb */
 349         struct lock_context *lock_current;
 350         struct lock_context *lock_pending;
 351 };
 352
 353 struct ctdb_db_context {
 354         struct ctdb_db_context *next, *prev;
 355         struct ctdb_context *ctdb;
 356         uint32_t db_id;
 357         bool persistent;
 358         bool readonly; /* Do we support read-only delegations ? */
 359         bool sticky; /* Do we support sticky records ? */
 360         const char *db_name;
 361         const char *db_path;
 362         struct tdb_wrap *ltdb;
 363         struct tdb_context *rottdb; /* ReadOnly tracking TDB */
 364         struct ctdb_registered_call *calls; /* list of registered calls */
 365         uint32_t seqnum;
 366         struct tevent_timer *seqnum_update;
 367         struct ctdb_traverse_local_handle *traverse;
 368         struct ctdb_vacuum_handle *vacuum_handle;
 369         char *unhealthy_reason;
 370         int pending_requests;
 371         struct revokechild_handle *revokechild_active;
 372         struct ctdb_persistent_state *persistent_state;
 373         struct trbt_tree *delete_queue;
 374         struct trbt_tree *sticky_records;
 375         int (*ctdb_ltdb_store_fn)(struct ctdb_db_context *ctdb_db,
 376                                   TDB_DATA key,
 377                                   struct ctdb_ltdb_header *header,
 378                                   TDB_DATA data);
 379
 380         /* used to track which records we are currently fetching
 381            so we can avoid sending duplicate fetch requests
 382         */
 383         struct trbt_tree *deferred_fetch;
 384         struct trbt_tree *defer_dmaster;
 385
 386         struct ctdb_db_statistics_old statistics;
 387
 388         struct lock_context *lock_current;
 389         struct lock_context *lock_pending;
 390         int lock_num_current;
 391
 392         struct ctdb_call_state *pending_calls;
 393
 394         enum ctdb_freeze_mode freeze_mode;
 395         struct ctdb_db_freeze_handle *freeze_handle;
 396         bool freeze_transaction_started;
 397         uint32_t freeze_transaction_id;
 398         uint32_t generation;
 399
 400         bool push_started;
 401         void *push_state;
 402 };
 403
 404
 405 #define CTDB_NO_MEMORY(ctdb, p) do { if (!(p)) { \
 406           DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
 407           ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
 408           return -1; }} while (0)
 409
 410 #define CTDB_NO_MEMORY_VOID(ctdb, p) do { if (!(p)) { \
 411           DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
 412           ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
 413           return; }} while (0)
 414
 415 #define CTDB_NO_MEMORY_NULL(ctdb, p) do { if (!(p)) { \
 416           DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
 417           ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
 418           return NULL; }} while (0)
 419
 420 #define CTDB_NO_MEMORY_FATAL(ctdb, p) do { if (!(p)) { \
 421           DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
 422           ctdb_fatal(ctdb, "Out of memory in " __location__ ); \
 423           }} while (0)
 424
 425
 426 enum call_state {CTDB_CALL_WAIT, CTDB_CALL_DONE, CTDB_CALL_ERROR};
 427
 428 /*
 429   state of a in-progress ctdb call
 430 */
 431 struct ctdb_call_state {
 432         struct ctdb_call_state *next, *prev;
 433         enum call_state state;
 434         uint32_t reqid;
 435         struct ctdb_req_call_old *c;
 436         struct ctdb_db_context *ctdb_db;
 437         const char *errmsg;
 438         struct ctdb_call *call;
 439         uint32_t generation;
 440         struct {
 441                 void (*fn)(struct ctdb_call_state *);
 442                 void *private_data;
 443         } async;
 444 };
 445
 446 /* internal prototypes */
 447
 448 #define CHECK_CONTROL_DATA_SIZE(size) do { \
 449  if (indata.dsize != size) { \
 450          DEBUG(0,(__location__ " Invalid data size in opcode %u. Got %u expected %u\n", \
 451                   opcode, (unsigned)indata.dsize, (unsigned)size));     \
 452          return -1; \
 453  } \
 454  } while (0)
 455
 456 #define CHECK_CONTROL_MIN_DATA_SIZE(size) do { \
 457  if (indata.dsize < size) { \
 458          DEBUG(0,(__location__ " Invalid data size in opcode %u. Got %u expected >= %u\n", \
 459                   opcode, (unsigned)indata.dsize, (unsigned)size));     \
 460          return -1; \
 461  } \
 462  } while (0)
 463
 464 /*
 465   state of a in-progress ctdb call in client
 466 */
 467 struct ctdb_client_call_state {
 468         enum call_state state;
 469         uint32_t reqid;
 470         struct ctdb_db_context *ctdb_db;
 471         struct ctdb_call *call;
 472         struct {
 473                 void (*fn)(struct ctdb_client_call_state *);
 474                 void *private_data;
 475         } async;
 476 };
 477
 478 extern int script_log_level;
 479 extern bool fast_start;
 480 extern const char *ctdbd_pidfile;
 481
 482 typedef void (*deferred_requeue_fn)(void *call_context, struct ctdb_req_header *hdr);
 483
 484
 485 /* from tcp/ and ib/ */
 486
 487 int ctdb_tcp_init(struct ctdb_context *ctdb);
 488 int ctdb_ibw_init(struct ctdb_context *ctdb);
 489
 490 /* from ctdb_banning.c */
 491
 492 void ctdb_local_node_got_banned(struct ctdb_context *ctdb);
 493 int32_t ctdb_control_set_ban_state(struct ctdb_context *ctdb, TDB_DATA indata);
 494 int32_t ctdb_control_get_ban_state(struct ctdb_context *ctdb, TDB_DATA *outdata);
 495 void ctdb_ban_self(struct ctdb_context *ctdb);
 496
 497 /* from ctdb_call.c */
 498
 499 struct ctdb_db_context *find_ctdb_db(struct ctdb_context *ctdb, uint32_t id);
 500
 501 void ctdb_request_dmaster(struct ctdb_context *ctdb,
 502                           struct ctdb_req_header *hdr);
 503 void ctdb_reply_dmaster(struct ctdb_context *ctdb,
 504                         struct ctdb_req_header *hdr);
 505 void ctdb_request_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
 506 void ctdb_reply_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
 507 void ctdb_reply_error(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
 508
 509 void ctdb_call_resend_db(struct ctdb_db_context *ctdb);
 510 void ctdb_call_resend_all(struct ctdb_context *ctdb);
 511
 512 struct ctdb_call_state *ctdb_call_local_send(struct ctdb_db_context *ctdb_db,
 513                                              struct ctdb_call *call,
 514                                              struct ctdb_ltdb_header *header,
 515                                              TDB_DATA *data);
 516
 517 struct ctdb_call_state *ctdb_daemon_call_send_remote(
 518                                         struct ctdb_db_context *ctdb_db,
 519                                         struct ctdb_call *call,
 520                                         struct ctdb_ltdb_header *header);
 521 int ctdb_daemon_call_recv(struct ctdb_call_state *state,
 522                           struct ctdb_call *call);
 523
 524 void ctdb_send_keepalive(struct ctdb_context *ctdb, uint32_t destnode);
 525
 526 int ctdb_start_revoke_ro_record(struct ctdb_context *ctdb,
 527                                 struct ctdb_db_context *ctdb_db,
 528                                 TDB_DATA key, struct ctdb_ltdb_header *header,
 529                                 TDB_DATA data);
 530
 531 int ctdb_add_revoke_deferred_call(struct ctdb_context *ctdb,
 532                                   struct ctdb_db_context *ctdb_db,
 533                                   TDB_DATA key, struct ctdb_req_header *hdr,
 534                                   deferred_requeue_fn fn, void *call_context);
 535
 536 /* from server/ctdb_control.c */
 537
 538 int32_t ctdb_dump_memory(struct ctdb_context *ctdb, TDB_DATA *outdata);
 539
 540 void ctdb_request_control_reply(struct ctdb_context *ctdb,
 541                                 struct ctdb_req_control_old *c,
 542                                 TDB_DATA *outdata, int32_t status,
 543                                 const char *errormsg);
 544
 545 void ctdb_request_control(struct ctdb_context *ctdb,
 546                           struct ctdb_req_header *hdr);
 547 void ctdb_reply_control(struct ctdb_context *ctdb,
 548                         struct ctdb_req_header *hdr);
 549
 550 int ctdb_daemon_send_control(struct ctdb_context *ctdb, uint32_t destnode,
 551                              uint64_t srvid, uint32_t opcode,
 552                              uint32_t client_id, uint32_t flags,
 553                              TDB_DATA data,
 554                              ctdb_control_callback_fn_t callback,
 555                              void *private_data);
 556
 557 /* from server/ctdb_daemon.c */
 558
 559 int daemon_register_message_handler(struct ctdb_context *ctdb,
 560                                     uint32_t client_id, uint64_t srvid);
 561 int daemon_deregister_message_handler(struct ctdb_context *ctdb,
 562                                       uint32_t client_id, uint64_t srvid);
 563 int daemon_check_srvids(struct ctdb_context *ctdb, TDB_DATA indata,
 564                         TDB_DATA *outdata);
 565
 566 int ctdb_start_daemon(struct ctdb_context *ctdb, bool do_fork);
 567
 568 struct ctdb_req_header *_ctdb_transport_allocate(struct ctdb_context *ctdb,
 569                                                  TALLOC_CTX *mem_ctx,
 570                                                  enum ctdb_operation operation,
 571                                                  size_t length, size_t slength,
 572                                                  const char *type);
 573
 574 #define ctdb_transport_allocate(ctdb, mem_ctx, operation, length, type) \
 575         (type *)_ctdb_transport_allocate(ctdb, mem_ctx, operation, length, \
 576                                          sizeof(type), #type)
 577
 578 void ctdb_daemon_cancel_controls(struct ctdb_context *ctdb,
 579                                  struct ctdb_node *node);
 580
 581 int ctdb_daemon_set_call(struct ctdb_context *ctdb, uint32_t db_id,
 582                          ctdb_fn_t fn, int id);
 583
 584 int ctdb_daemon_send_message(struct ctdb_context *ctdb, uint32_t pnn,
 585                              uint64_t srvid, TDB_DATA data);
 586
 587 int32_t ctdb_control_register_notify(struct ctdb_context *ctdb,
 588                                      uint32_t client_id, TDB_DATA indata);
 589 int32_t ctdb_control_deregister_notify(struct ctdb_context *ctdb,
 590                                        uint32_t client_id, TDB_DATA indata);
 591
 592 struct ctdb_client *ctdb_find_client_by_pid(struct ctdb_context *ctdb,
 593                                             pid_t pid);
 594
 595 int32_t ctdb_control_process_exists(struct ctdb_context *ctdb, pid_t pid);
 596
 597 int ctdb_control_getnodesfile(struct ctdb_context *ctdb, uint32_t opcode,
 598                               TDB_DATA indata, TDB_DATA *outdata);
 599
 600 void ctdb_shutdown_sequence(struct ctdb_context *ctdb, int exit_code);
 601
 602 int switch_from_server_to_client(struct ctdb_context *ctdb);
 603
 604 /* From server/ctdb_fork.c */
 605
 606 void ctdb_track_child(struct ctdb_context *ctdb, pid_t pid);
 607
 608 pid_t ctdb_fork(struct ctdb_context *ctdb);
 609 pid_t ctdb_vfork_exec(TALLOC_CTX *mem_ctx, struct ctdb_context *ctdb,
 610                       const char *helper, int helper_argc,
 611                       const char **helper_argv);
 612
 613 struct tevent_signal *ctdb_init_sigchld(struct ctdb_context *ctdb);
 614
 615 int ctdb_kill(struct ctdb_context *ctdb, pid_t pid, int signum);
 616
 617 /* from server/ctdb_freeze.c */
 618
 619 int32_t ctdb_control_db_freeze(struct ctdb_context *ctdb,
 620                                struct ctdb_req_control_old *c,
 621                                uint32_t db_id, bool *async_reply);
 622 int32_t ctdb_control_db_thaw(struct ctdb_context *ctdb, uint32_t db_id);
 623
 624 int32_t ctdb_control_freeze(struct ctdb_context *ctdb,
 625                             struct ctdb_req_control_old *c, bool *async_reply);
 626 int32_t ctdb_control_thaw(struct ctdb_context *ctdb, bool check_recmode);
 627
 628 bool ctdb_blocking_freeze(struct ctdb_context *ctdb);
 629
 630 int32_t ctdb_control_db_transaction_start(struct ctdb_context *ctdb,
 631                                           TDB_DATA indata);
 632 int32_t ctdb_control_db_transaction_cancel(struct ctdb_context *ctdb,
 633                                            TDB_DATA indata);
 634 int32_t ctdb_control_db_transaction_commit(struct ctdb_context *ctdb,
 635                                            TDB_DATA indata);
 636
 637 int32_t ctdb_control_wipe_database(struct ctdb_context *ctdb, TDB_DATA indata);
 638
 639 bool ctdb_db_frozen(struct ctdb_db_context *ctdb_db);
 640 bool ctdb_db_all_frozen(struct ctdb_context *ctdb);
 641
 642 /* from server/ctdb_keepalive.c */
 643
 644 void ctdb_start_keepalive(struct ctdb_context *ctdb);
 645 void ctdb_stop_keepalive(struct ctdb_context *ctdb);
 646
 647 /* from server/ctdb_lock.c */
 648
 649 struct lock_request;
 650
 651 typedef int (*ctdb_db_handler_t)(struct ctdb_db_context *ctdb_db,
 652                                  void *private_data);
 653
 654 int ctdb_db_iterator(struct ctdb_context *ctdb, ctdb_db_handler_t handler,
 655                      void *private_data);
 656
 657 int ctdb_lockdb_mark(struct ctdb_db_context *ctdb_db);
 658
 659 int ctdb_lockdb_unmark(struct ctdb_db_context *ctdb_db);
 660
 661 struct lock_request *ctdb_lock_record(TALLOC_CTX *mem_ctx,
 662                                       struct ctdb_db_context *ctdb_db,
 663                                       TDB_DATA key,
 664                                       bool auto_mark,
 665                                       void (*callback)(void *, bool),
 666                                       void *private_data);
 667
 668 struct lock_request *ctdb_lock_db(TALLOC_CTX *mem_ctx,
 669                                   struct ctdb_db_context *ctdb_db,
 670                                   bool auto_mark,
 671                                   void (*callback)(void *, bool),
 672                                   void *private_data);
 673
 674 /* from ctdb_logging.c */
 675
 676 bool ctdb_logging_init(TALLOC_CTX *mem_ctx, const char *logging,
 677                        const char *debug_level);
 678
 679 struct ctdb_log_state *ctdb_vfork_with_logging(TALLOC_CTX *mem_ctx,
 680                                                struct ctdb_context *ctdb,
 681                                                const char *log_prefix,
 682                                                const char *helper,
 683                                                int helper_argc,
 684                                                const char **helper_argv,
 685                                                void (*logfn)(const char *,
 686                                                              uint16_t, void *),
 687                                                void *logfn_private, pid_t *pid);
 688
 689 int ctdb_set_child_logging(struct ctdb_context *ctdb);
 690
 691 /* from ctdb_logging_file.c */
 692
 693 void ctdb_log_init_file(void);
 694
 695 /* from ctdb_logging_syslog.c */
 696
 697 void ctdb_log_init_syslog(void);
 698
 699 /* from ctdb_ltdb_server.c */
 700
 701 int ctdb_ltdb_lock_requeue(struct ctdb_db_context *ctdb_db,
 702                            TDB_DATA key, struct ctdb_req_header *hdr,
 703                            void (*recv_pkt)(void *, struct ctdb_req_header *),
 704                            void *recv_context, bool ignore_generation);
 705
 706 int ctdb_ltdb_lock_fetch_requeue(struct ctdb_db_context *ctdb_db,
 707                                  TDB_DATA key, struct ctdb_ltdb_header *header,
 708                                  struct ctdb_req_header *hdr, TDB_DATA *data,
 709                                  void (*recv_pkt)(void *, struct ctdb_req_header *),
 710                                  void *recv_context, bool ignore_generation);
 711
 712 int ctdb_load_persistent_health(struct ctdb_context *ctdb,
 713                                 struct ctdb_db_context *ctdb_db);
 714 int ctdb_update_persistent_health(struct ctdb_context *ctdb,
 715                                   struct ctdb_db_context *ctdb_db,
 716                                   const char *reason,/* NULL means healthy */
 717                                   int num_healthy_nodes);
 718 int ctdb_recheck_persistent_health(struct ctdb_context *ctdb);
 719
 720 int32_t ctdb_control_db_set_healthy(struct ctdb_context *ctdb,
 721                                     TDB_DATA indata);
 722 int32_t ctdb_control_db_get_health(struct ctdb_context *ctdb,
 723                                    TDB_DATA indata, TDB_DATA *outdata);
 724
 725 int ctdb_set_db_readonly(struct ctdb_context *ctdb,
 726                          struct ctdb_db_context *ctdb_db);
 727
 728 int ctdb_process_deferred_attach(struct ctdb_context *ctdb);
 729
 730 int32_t ctdb_control_db_attach(struct ctdb_context *ctdb, TDB_DATA indata,
 731                                TDB_DATA *outdata, uint64_t tdb_flags,
 732                                bool persistent, uint32_t client_id,
 733                                struct ctdb_req_control_old *c,
 734                                bool *async_reply);
 735 int32_t ctdb_control_db_detach(struct ctdb_context *ctdb, TDB_DATA indata,
 736                                uint32_t client_id);
 737
 738 int ctdb_attach_databases(struct ctdb_context *ctdb);
 739
 740 int32_t ctdb_ltdb_update_seqnum(struct ctdb_context *ctdb, uint32_t db_id,
 741                                 uint32_t srcnode);
 742 int32_t ctdb_ltdb_enable_seqnum(struct ctdb_context *ctdb, uint32_t db_id);
 743
 744 int ctdb_set_db_sticky(struct ctdb_context *ctdb,
 745                        struct ctdb_db_context *ctdb_db);
 746
 747 void ctdb_db_statistics_reset(struct ctdb_db_context *ctdb_db);
 748
 749 int32_t ctdb_control_get_db_statistics(struct ctdb_context *ctdb,
 750                                        uint32_t db_id, TDB_DATA *outdata);
 751
 752 /* from ctdb_monitor.c */
 753
 754 int ctdb_set_notification_script(struct ctdb_context *ctdb, const char *script);
 755 void ctdb_run_notification_script(struct ctdb_context *ctdb, const char *event);
 756
 757 void ctdb_disable_monitoring(struct ctdb_context *ctdb);
 758 void ctdb_enable_monitoring(struct ctdb_context *ctdb);
 759 void ctdb_stop_monitoring(struct ctdb_context *ctdb);
 760
 761 void ctdb_wait_for_first_recovery(struct ctdb_context *ctdb);
 762
 763 int32_t ctdb_control_modflags(struct ctdb_context *ctdb, TDB_DATA indata);
 764
 765 int32_t ctdb_monitoring_mode(struct ctdb_context *ctdb);
 766 bool ctdb_stopped_monitoring(struct ctdb_context *ctdb);
 767
 768 /* from ctdb_persistent.c */
 769
 770 void ctdb_persistent_finish_trans3_commits(struct ctdb_context *ctdb);
 771
 772 int32_t ctdb_control_trans3_commit(struct ctdb_context *ctdb,
 773                                    struct ctdb_req_control_old *c,
 774                                    TDB_DATA recdata, bool *async_reply);
 775
 776 int32_t ctdb_control_start_persistent_update(struct ctdb_context *ctdb,
 777                                              struct ctdb_req_control_old *c,
 778                                              TDB_DATA recdata);
 779 int32_t ctdb_control_cancel_persistent_update(struct ctdb_context *ctdb,
 780                                               struct ctdb_req_control_old *c,
 781                                               TDB_DATA recdata);
 782
 783 int32_t ctdb_control_get_db_seqnum(struct ctdb_context *ctdb,
 784                                    TDB_DATA indata, TDB_DATA *outdata);
 785
 786 /* from ctdb_recover.c */
 787
 788 int ctdb_control_getvnnmap(struct ctdb_context *ctdb, uint32_t opcode,
 789                            TDB_DATA indata, TDB_DATA *outdata);
 790 int ctdb_control_setvnnmap(struct ctdb_context *ctdb, uint32_t opcode,
 791                            TDB_DATA indata, TDB_DATA *outdata);
 792
 793 int ctdb_control_getdbmap(struct ctdb_context *ctdb, uint32_t opcode,
 794                           TDB_DATA indata, TDB_DATA *outdata);
 795 int ctdb_control_getnodemap(struct ctdb_context *ctdb, uint32_t opcode,
 796                             TDB_DATA indata, TDB_DATA *outdata);
 797
 798 int ctdb_control_reload_nodes_file(struct ctdb_context *ctdb, uint32_t opcode);
 799
 800 int32_t ctdb_control_pull_db(struct ctdb_context *ctdb, TDB_DATA indata,
 801                              TDB_DATA *outdata);
 802 int32_t ctdb_control_push_db(struct ctdb_context *ctdb, TDB_DATA indata);
 803
 804 int32_t ctdb_control_db_pull(struct ctdb_context *ctdb,
 805                              struct ctdb_req_control_old *c,
 806                              TDB_DATA indata, TDB_DATA *outdata);
 807 int32_t ctdb_control_db_push_start(struct ctdb_context *ctdb,
 808                                    TDB_DATA indata);
 809 int32_t ctdb_control_db_push_confirm(struct ctdb_context *ctdb,
 810                                      TDB_DATA indata, TDB_DATA *outdata);
 811
 812 int ctdb_deferred_drop_all_ips(struct ctdb_context *ctdb);
 813
 814 int32_t ctdb_control_set_recmode(struct ctdb_context *ctdb,
 815                                  struct ctdb_req_control_old *c,
 816                                  TDB_DATA indata, bool *async_reply,
 817                                  const char **errormsg);
 818
 819 int32_t ctdb_control_end_recovery(struct ctdb_context *ctdb,
 820                                  struct ctdb_req_control_old *c,
 821                                  bool *async_reply);
 822 int32_t ctdb_control_start_recovery(struct ctdb_context *ctdb,
 823                                  struct ctdb_req_control_old *c,
 824                                  bool *async_reply);
 825
 826 int32_t ctdb_control_try_delete_records(struct ctdb_context *ctdb,
 827                                         TDB_DATA indata, TDB_DATA *outdata);
 828 int32_t ctdb_control_receive_records(struct ctdb_context *ctdb,
 829                                      TDB_DATA indata, TDB_DATA *outdata);
 830
 831 int32_t ctdb_control_get_capabilities(struct ctdb_context *ctdb,
 832                                       TDB_DATA *outdata);
 833
 834 int32_t ctdb_control_recd_ping(struct ctdb_context *ctdb);
 835 int32_t ctdb_control_set_recmaster(struct ctdb_context *ctdb,
 836                                    uint32_t opcode, TDB_DATA indata);
 837
 838 int32_t ctdb_control_stop_node(struct ctdb_context *ctdb);
 839 int32_t ctdb_control_continue_node(struct ctdb_context *ctdb);
 840
 841 /* from ctdb_recoverd.c */
 842
 843 int ctdb_start_recoverd(struct ctdb_context *ctdb);
 844 void ctdb_stop_recoverd(struct ctdb_context *ctdb);
 845
 846 /* from ctdb_server.c */
 847
 848 int ctdb_set_transport(struct ctdb_context *ctdb, const char *transport);
 849
 850 int ctdb_ip_to_nodeid(struct ctdb_context *ctdb, const ctdb_sock_addr *nodeip);
 851
 852 void ctdb_load_nodes_file(struct ctdb_context *ctdb);
 853
 854 int ctdb_set_address(struct ctdb_context *ctdb, const char *address);
 855
 856 uint32_t ctdb_get_num_active_nodes(struct ctdb_context *ctdb);
 857
 858 void ctdb_input_pkt(struct ctdb_context *ctdb, struct ctdb_req_header *);
 859
 860 void ctdb_node_dead(struct ctdb_node *node);
 861 void ctdb_node_connected(struct ctdb_node *node);
 862
 863 void ctdb_queue_packet(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
 864 void ctdb_queue_packet_opcode(struct ctdb_context *ctdb,
 865                               struct ctdb_req_header *hdr, unsigned opcode);
 866
 867 /* from ctdb_serverids.c */
 868
 869 int32_t ctdb_control_register_server_id(struct ctdb_context *ctdb,
 870                                         uint32_t client_id, TDB_DATA indata);
 871 int32_t ctdb_control_check_server_id(struct ctdb_context *ctdb,
 872                                      TDB_DATA indata);
 873 int32_t ctdb_control_unregister_server_id(struct ctdb_context *ctdb,
 874                                           TDB_DATA indata);
 875 int32_t ctdb_control_get_server_id_list(struct ctdb_context *ctdb,
 876                                         TDB_DATA *outdata);
 877
 878 /* from ctdb_statistics.c */
 879
 880 int ctdb_statistics_init(struct ctdb_context *ctdb);
 881
 882 int32_t ctdb_control_get_stat_history(struct ctdb_context *ctdb,
 883                                       struct ctdb_req_control_old *c,
 884                                       TDB_DATA *outdata);
 885
 886 /* from ctdb_takeover.c */
 887
 888 int32_t ctdb_control_takeover_ip(struct ctdb_context *ctdb,
 889                                  struct ctdb_req_control_old *c,
 890                                  TDB_DATA indata,
 891                                  bool *async_reply);
 892 int32_t ctdb_control_release_ip(struct ctdb_context *ctdb,
 893                                  struct ctdb_req_control_old *c,
 894                                  TDB_DATA indata,
 895                                  bool *async_reply);
 896 int32_t ctdb_control_ipreallocated(struct ctdb_context *ctdb,
 897                                  struct ctdb_req_control_old *c,
 898                                  bool *async_reply);
 899
 900 int ctdb_set_public_addresses(struct ctdb_context *ctdb, bool check_addresses);
 901
 902 int ctdb_takeover_run(struct ctdb_context *ctdb, struct ctdb_node_map_old *nodemap,
 903                       uint32_t *force_rebalance_nodes);
 904
 905 int32_t ctdb_control_tcp_client(struct ctdb_context *ctdb, uint32_t client_id,
 906                                 TDB_DATA indata);
 907 int32_t ctdb_control_tcp_add(struct ctdb_context *ctdb, TDB_DATA indata,
 908                              bool tcp_update_needed);
 909 int32_t ctdb_control_tcp_remove(struct ctdb_context *ctdb, TDB_DATA indata);
 910 int32_t ctdb_control_startup(struct ctdb_context *ctdb, uint32_t vnn);
 911
 912 void ctdb_takeover_client_destructor_hook(struct ctdb_client *client);
 913
 914 void ctdb_release_all_ips(struct ctdb_context *ctdb);
 915
 916 int32_t ctdb_control_get_public_ips(struct ctdb_context *ctdb,
 917                                     struct ctdb_req_control_old *c,
 918                                     TDB_DATA *outdata);
 919 int32_t ctdb_control_get_public_ip_info(struct ctdb_context *ctdb,
 920                                         struct ctdb_req_control_old *c,
 921                                         TDB_DATA indata, TDB_DATA *outdata);
 922
 923 int32_t ctdb_control_get_ifaces(struct ctdb_context *ctdb,
 924                                 struct ctdb_req_control_old *c,
 925                                 TDB_DATA *outdata);
 926 int32_t ctdb_control_set_iface_link(struct ctdb_context *ctdb,
 927                                     struct ctdb_req_control_old *c,
 928                                     TDB_DATA indata);
 929
 930 int32_t ctdb_control_set_tcp_tickle_list(struct ctdb_context *ctdb,
 931                                          TDB_DATA indata);
 932 int32_t ctdb_control_get_tcp_tickle_list(struct ctdb_context *ctdb,
 933                                          TDB_DATA indata, TDB_DATA *outdata);
 934
 935 void ctdb_start_tcp_tickle_update(struct ctdb_context *ctdb);
 936
 937 int32_t ctdb_control_send_gratious_arp(struct ctdb_context *ctdb,
 938                                        TDB_DATA indata);
 939
 940 int32_t ctdb_control_add_public_address(struct ctdb_context *ctdb,
 941                                         TDB_DATA indata);
 942 int32_t ctdb_control_del_public_address(struct ctdb_context *ctdb,
 943                                         TDB_DATA recdata);
 944
 945 int32_t ctdb_control_reload_public_ips(struct ctdb_context *ctdb,
 946                                        struct ctdb_req_control_old *c,
 947                                        bool *async_reply);
 948
 949 /* from ctdb_traverse.c */
 950
 951 int32_t ctdb_control_traverse_all_ext(struct ctdb_context *ctdb,
 952                                       TDB_DATA data, TDB_DATA *outdata);
 953 int32_t ctdb_control_traverse_all(struct ctdb_context *ctdb,
 954                                   TDB_DATA data, TDB_DATA *outdata);
 955 int32_t ctdb_control_traverse_data(struct ctdb_context *ctdb,
 956                                    TDB_DATA data, TDB_DATA *outdata);
 957 int32_t ctdb_control_traverse_kill(struct ctdb_context *ctdb, TDB_DATA indata,
 958                                     TDB_DATA *outdata, uint32_t srcnode);
 959
 960 int32_t ctdb_control_traverse_start_ext(struct ctdb_context *ctdb,
 961                                         TDB_DATA indata, TDB_DATA *outdata,
 962                                         uint32_t srcnode, uint32_t client_id);
 963 int32_t ctdb_control_traverse_start(struct ctdb_context *ctdb,
 964                                     TDB_DATA indata, TDB_DATA *outdata,
 965                                     uint32_t srcnode, uint32_t client_id);
 966
 967 /* from ctdb_tunables.c */
 968
 969 void ctdb_tunables_set_defaults(struct ctdb_context *ctdb);
 970
 971 int32_t ctdb_control_get_tunable(struct ctdb_context *ctdb, TDB_DATA indata,
 972                                  TDB_DATA *outdata);
 973 int32_t ctdb_control_set_tunable(struct ctdb_context *ctdb, TDB_DATA indata);
 974 int32_t ctdb_control_list_tunables(struct ctdb_context *ctdb,
 975                                    TDB_DATA *outdata);
 976
 977 /* from ctdb_update_record.c */
 978
 979 int32_t ctdb_control_update_record(struct ctdb_context *ctdb,
 980                                    struct ctdb_req_control_old *c,
 981                                    TDB_DATA recdata, bool *async_reply);
 982
 983 /* from ctdb_uptime.c */
 984
 985 int32_t ctdb_control_uptime(struct ctdb_context *ctdb, TDB_DATA *outdata);
 986
 987 /* from ctdb_vacuum.c */
 988
 989 void ctdb_stop_vacuuming(struct ctdb_context *ctdb);
 990 int ctdb_vacuum_init(struct ctdb_db_context *ctdb_db);
 991
 992 int32_t ctdb_control_schedule_for_deletion(struct ctdb_context *ctdb,
 993                                            TDB_DATA indata);
 994 int32_t ctdb_local_schedule_for_deletion(struct ctdb_db_context *ctdb_db,
 995                                          const struct ctdb_ltdb_header *hdr,
 996                                          TDB_DATA key);
 997
 998 void ctdb_local_remove_from_delete_queue(struct ctdb_db_context *ctdb_db,
 999                                          const struct ctdb_ltdb_header *hdr,
1000                                          const TDB_DATA key);
1001
1002 /* from eventscript.c */
1003
1004 int32_t ctdb_control_get_event_script_status(struct ctdb_context *ctdb,
1005                                              uint32_t call_type,
1006                                              TDB_DATA *outdata);
1007
1008 int ctdb_event_script_callback(struct ctdb_context *ctdb,
1009                                TALLOC_CTX *mem_ctx,
1010                                void (*callback)(struct ctdb_context *,
1011                                                 int, void *),
1012                                void *private_data,
1013                                enum ctdb_event call,
1014                                const char *fmt, ...) PRINTF_ATTRIBUTE(6,7);
1015
1016 int ctdb_event_script_args(struct ctdb_context *ctdb,
1017                            enum ctdb_event call,
1018                            const char *fmt, ...) PRINTF_ATTRIBUTE(3,4);
1019
1020 int ctdb_event_script(struct ctdb_context *ctdb,
1021                       enum ctdb_event call);
1022
1023 int32_t ctdb_run_eventscripts(struct ctdb_context *ctdb,
1024                               struct ctdb_req_control_old *c,
1025                               TDB_DATA data, bool *async_reply);
1026
1027 int32_t ctdb_control_enable_script(struct ctdb_context *ctdb, TDB_DATA indata);
1028 int32_t ctdb_control_disable_script(struct ctdb_context *ctdb, TDB_DATA indata);
1029
1030 #endif