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lib: Make ctdb_watch_us return 0/errno
[Samba.git] / ctdb / include / ctdb_private.h
blob5702ad143b30713bcdf931f194b11cdd2477ac0f
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 * Structures to support SRVID requests and replies
28 */
29 struct srvid_request {
30 uint32_t pnn;
31 uint64_t srvid;
32 };
33
34 struct srvid_request_data {
35 uint32_t pnn;
36 uint64_t srvid;
37 uint32_t data;
38 };
39
40 /*
41 a tcp connection description
42 also used by tcp_add and tcp_remove controls
43 */
44 struct ctdb_tcp_connection {
45 ctdb_sock_addr src_addr;
46 ctdb_sock_addr dst_addr;
47 };
48
49 /* the wire representation for a tcp tickle array */
50 struct ctdb_tcp_wire_array {
51 uint32_t num;
52 struct ctdb_tcp_connection connections[1];
53 };
54
55 /* the list of tcp tickles used by get/set tcp tickle list */
56 struct ctdb_control_tcp_tickle_list {
57 ctdb_sock_addr addr;
58 struct ctdb_tcp_wire_array tickles;
59 };
60
61 /*
62 array of tcp connections
63 */
64 struct ctdb_tcp_array {
65 uint32_t num;
66 struct ctdb_tcp_connection *connections;
67 };
68
69
70 /* all tunable variables go in here */
71 struct ctdb_tunable {
72 uint32_t max_redirect_count;
73 uint32_t seqnum_interval; /* unit is ms */
74 uint32_t control_timeout;
75 uint32_t traverse_timeout;
76 uint32_t keepalive_interval;
77 uint32_t keepalive_limit;
78 uint32_t recover_timeout;
79 uint32_t recover_interval;
80 uint32_t election_timeout;
81 uint32_t takeover_timeout;
82 uint32_t monitor_interval;
83 uint32_t tickle_update_interval;
84 uint32_t script_timeout;
85 uint32_t script_timeout_count; /* allow dodgy scripts to hang this many times in a row before we mark the node unhealthy */
86 uint32_t script_unhealthy_on_timeout; /* obsolete */
87 uint32_t recovery_grace_period;
88 uint32_t recovery_ban_period;
89 uint32_t database_hash_size;
90 uint32_t database_max_dead;
91 uint32_t rerecovery_timeout;
92 uint32_t enable_bans;
93 uint32_t deterministic_public_ips;
94 uint32_t reclock_ping_period;
95 uint32_t no_ip_failback;
96 uint32_t disable_ip_failover;
97 uint32_t verbose_memory_names;
98 uint32_t recd_ping_timeout;
99 uint32_t recd_ping_failcount;
100 uint32_t log_latency_ms;
101 uint32_t reclock_latency_ms;
102 uint32_t recovery_drop_all_ips;
103 uint32_t verify_recovery_lock;
104 uint32_t vacuum_interval;
105 uint32_t vacuum_max_run_time;
106 uint32_t repack_limit;
107 uint32_t vacuum_limit;
108 uint32_t max_queue_depth_drop_msg;
109 uint32_t allow_unhealthy_db_read;
110 uint32_t stat_history_interval;
111 uint32_t deferred_attach_timeout;
112 uint32_t vacuum_fast_path_count;
113 uint32_t lcp2_public_ip_assignment;
114 uint32_t allow_client_db_attach;
115 uint32_t recover_pdb_by_seqnum;
116 uint32_t deferred_rebalance_on_node_add;
117 uint32_t fetch_collapse;
118 uint32_t hopcount_make_sticky;
119 uint32_t sticky_duration;
120 uint32_t sticky_pindown;
121 uint32_t no_ip_takeover;
122 uint32_t db_record_count_warn;
123 uint32_t db_record_size_warn;
124 uint32_t db_size_warn;
125 uint32_t pulldb_preallocation_size;
126 uint32_t no_ip_host_on_all_disabled;
127 uint32_t samba3_hack;
128 uint32_t mutex_enabled;
129 uint32_t lock_processes_per_db;
130 };
131
132 /*
133 an installed ctdb remote call
134 */
135 struct ctdb_registered_call {
136 struct ctdb_registered_call *next, *prev;
137 uint32_t id;
138 ctdb_fn_t fn;
139 };
140
141 /*
142 check that a pnn is valid
143 */
144 #define ctdb_validate_pnn(ctdb, pnn) (((uint32_t)(pnn)) < (ctdb)->num_nodes)
145
146
147 /* called from the queue code when a packet comes in. Called with data==NULL
148 on error */
149 typedef void (*ctdb_queue_cb_fn_t)(uint8_t *data, size_t length,
150 void *private_data);
151
152 /* used for callbacks in ctdb_control requests */
153 typedef void (*ctdb_control_callback_fn_t)(struct ctdb_context *,
154 int32_t status, TDB_DATA data,
155 const char *errormsg,
156 void *private_data);
157 /*
158 structure describing a connected client in the daemon
159 */
160 struct ctdb_client {
161 struct ctdb_context *ctdb;
162 int fd;
163 struct ctdb_queue *queue;
164 uint32_t client_id;
165 pid_t pid;
166 struct ctdb_tcp_list *tcp_list;
167 uint32_t db_id;
168 uint32_t num_persistent_updates;
169 struct ctdb_client_notify_list *notify;
170 };
171
172 struct ctdb_iface;
173
174 /* state associated with a public ip address */
175 struct ctdb_vnn {
176 struct ctdb_vnn *prev, *next;
177
178 struct ctdb_iface *iface;
179 const char **ifaces;
180 ctdb_sock_addr public_address;
181 uint8_t public_netmask_bits;
182
183 /* the node number that is serving this public address, if any.
184 If no node serves this ip it is set to -1 */
185 int32_t pnn;
186
187 /* List of clients to tickle for this public address */
188 struct ctdb_tcp_array *tcp_array;
189
190 /* whether we need to update the other nodes with changes to our list
191 of connected clients */
192 bool tcp_update_needed;
193
194 /* a context to hang sending gratious arp events off */
195 TALLOC_CTX *takeover_ctx;
196
197 struct ctdb_kill_tcp *killtcp;
198
199 /* Set to true any time an update to this VNN is in flight.
200 This helps to avoid races. */
201 bool update_in_flight;
202
203 /* If CTDB_CONTROL_DEL_PUBLIC_IP is received for this IP
204 * address then this flag is set. It will be deleted in the
205 * release IP callback. */
206 bool delete_pending;
207 };
208
209 /*
210 state associated with one node
211 */
212 struct ctdb_node {
213 struct ctdb_context *ctdb;
214 ctdb_sock_addr address;
215 const char *name; /* for debug messages */
216 void *private_data; /* private to transport */
217 uint32_t pnn;
218 uint32_t flags;
219
220 /* used by the dead node monitoring */
221 uint32_t dead_count;
222 uint32_t rx_cnt;
223 uint32_t tx_cnt;
224
225 /* a list of controls pending to this node, so we can time them out quickly
226 if the node becomes disconnected */
227 struct daemon_control_state *pending_controls;
228
229 /* used by the recovery daemon when distributing ip addresses
230 across the nodes. it needs to know which public ip's can be handled
231 by each node.
232 */
233 struct ctdb_all_public_ips *known_public_ips;
234 struct ctdb_all_public_ips *available_public_ips;
235 /* used by the recovery dameon to track when a node should be banned */
236 struct ctdb_banning_state *ban_state;
237 };
238
239 /*
240 transport specific methods
241 */
242 struct ctdb_methods {
243 int (*initialise)(struct ctdb_context *); /* initialise transport structures */
244 int (*start)(struct ctdb_context *); /* start the transport */
245 int (*add_node)(struct ctdb_node *); /* setup a new node */
246 int (*connect_node)(struct ctdb_node *); /* connect to node */
247 int (*queue_pkt)(struct ctdb_node *, uint8_t *data, uint32_t length);
248 void *(*allocate_pkt)(TALLOC_CTX *mem_ctx, size_t );
249 void (*shutdown)(struct ctdb_context *); /* shutdown transport */
250 void (*restart)(struct ctdb_node *); /* stop and restart the connection */
251 };
252
253 /*
254 transport calls up to the ctdb layer
255 */
256 struct ctdb_upcalls {
257 /* recv_pkt is called when a packet comes in */
258 void (*recv_pkt)(struct ctdb_context *, uint8_t *data, uint32_t length);
259
260 /* node_dead is called when an attempt to send to a node fails */
261 void (*node_dead)(struct ctdb_node *);
262
263 /* node_connected is called when a connection to a node is established */
264 void (*node_connected)(struct ctdb_node *);
265 };
266
267 /* additional data required for the daemon mode */
268 struct ctdb_daemon_data {
269 int sd;
270 char *name;
271 struct ctdb_queue *queue;
272 };
273
274
275 #define CTDB_UPDATE_STAT(ctdb, counter, value) \
276 { \
277 if (value > ctdb->statistics.counter) { \
278 ctdb->statistics.counter = c->hopcount; \
279 } \
280 if (value > ctdb->statistics_current.counter) { \
281 ctdb->statistics_current.counter = c->hopcount; \
282 } \
283 }
284
285 #define CTDB_INCREMENT_STAT(ctdb, counter) \
286 { \
287 ctdb->statistics.counter++; \
288 ctdb->statistics_current.counter++; \
289 }
290
291 #define CTDB_DECREMENT_STAT(ctdb, counter) \
292 { \
293 if (ctdb->statistics.counter > 0) \
294 ctdb->statistics.counter--; \
295 if (ctdb->statistics_current.counter > 0) \
296 ctdb->statistics_current.counter--; \
297 }
298
299 #define CTDB_INCREMENT_DB_STAT(ctdb_db, counter) \
300 { \
301 ctdb_db->statistics.counter++; \
302 }
303
304 #define CTDB_DECREMENT_DB_STAT(ctdb_db, counter) \
305 { \
306 if (ctdb_db->statistics.counter > 0) \
307 ctdb_db->statistics.counter--; \
308 }
309
310 #define CTDB_UPDATE_RECLOCK_LATENCY(ctdb, name, counter, value) \
311 { \
312 if (value > ctdb->statistics.counter.max) \
313 ctdb->statistics.counter.max = value; \
314 if (value > ctdb->statistics_current.counter.max) \
315 ctdb->statistics_current.counter.max = value; \
316 \
317 if (ctdb->statistics.counter.num == 0 || \
318 value < ctdb->statistics.counter.min) \
319 ctdb->statistics.counter.min = value; \
320 if (ctdb->statistics_current.counter.num == 0 || \
321 value < ctdb->statistics_current.counter.min) \
322 ctdb->statistics_current.counter.min = value; \
323 \
324 ctdb->statistics.counter.total += value; \
325 ctdb->statistics_current.counter.total += value; \
326 \
327 ctdb->statistics.counter.num++; \
328 ctdb->statistics_current.counter.num++; \
329 \
330 if (ctdb->tunable.reclock_latency_ms != 0) { \
331 if (value*1000 > ctdb->tunable.reclock_latency_ms) { \
332 DEBUG(DEBUG_ERR, \
333 ("High RECLOCK latency %fs for operation %s\n", \
334 value, name)); \
335 } \
336 } \
337 }
338
339 #define CTDB_UPDATE_DB_LATENCY(ctdb_db, operation, counter, value) \
340 { \
341 if (value > ctdb_db->statistics.counter.max) \
342 ctdb_db->statistics.counter.max = value; \
343 if (ctdb_db->statistics.counter.num == 0 || \
344 value < ctdb_db->statistics.counter.min) \
345 ctdb_db->statistics.counter.min = value; \
346 \
347 ctdb_db->statistics.counter.total += value; \
348 ctdb_db->statistics.counter.num++; \
349 \
350 if (ctdb_db->ctdb->tunable.log_latency_ms != 0) { \
351 if (value*1000 > ctdb_db->ctdb->tunable.log_latency_ms) { \
352 DEBUG(DEBUG_ERR, \
353 ("High latency %.6fs for operation %s on database %s\n",\
354 value, operation, ctdb_db->db_name)); \
355 } \
356 } \
357 }
358
359 #define CTDB_UPDATE_LATENCY(ctdb, db, operation, counter, t) \
360 { \
361 double l = timeval_elapsed(&t); \
362 \
363 if (l > ctdb->statistics.counter.max) \
364 ctdb->statistics.counter.max = l; \
365 if (l > ctdb->statistics_current.counter.max) \
366 ctdb->statistics_current.counter.max = l; \
367 \
368 if (ctdb->statistics.counter.num == 0 || \
369 l < ctdb->statistics.counter.min) \
370 ctdb->statistics.counter.min = l; \
371 if (ctdb->statistics_current.counter.num == 0 || \
372 l < ctdb->statistics_current.counter.min) \
373 ctdb->statistics_current.counter.min = l; \
374 \
375 ctdb->statistics.counter.total += l; \
376 ctdb->statistics_current.counter.total += l; \
377 \
378 ctdb->statistics.counter.num++; \
379 ctdb->statistics_current.counter.num++; \
380 \
381 if (ctdb->tunable.log_latency_ms != 0) { \
382 if (l*1000 > ctdb->tunable.log_latency_ms) { \
383 DEBUG(DEBUG_WARNING, \
384 ("High latency %.6fs for operation %s on database %s\n",\
385 l, operation, db->db_name)); \
386 } \
387 } \
388 }
389
390
391
392 /* a structure that contains the elements required for the write record
393 control
394 */
395 struct ctdb_write_record {
396 uint32_t dbid;
397 uint32_t keylen;
398 uint32_t datalen;
399 unsigned char blob[1];
400 };
401
402 enum ctdb_freeze_mode {CTDB_FREEZE_NONE, CTDB_FREEZE_PENDING, CTDB_FREEZE_FROZEN};
403
404 enum ctdb_runstate {
405 CTDB_RUNSTATE_UNKNOWN,
406 CTDB_RUNSTATE_INIT,
407 CTDB_RUNSTATE_SETUP,
408 CTDB_RUNSTATE_FIRST_RECOVERY,
409 CTDB_RUNSTATE_STARTUP,
410 CTDB_RUNSTATE_RUNNING,
411 CTDB_RUNSTATE_SHUTDOWN,
412 };
413
414 const char *runstate_to_string(enum ctdb_runstate runstate);
415 enum ctdb_runstate runstate_from_string(const char *label);
416 void ctdb_set_runstate(struct ctdb_context *ctdb, enum ctdb_runstate runstate);
417
418 void ctdb_shutdown_sequence(struct ctdb_context *ctdb, int exit_code);
419
420 #define CTDB_MONITORING_ACTIVE 0
421 #define CTDB_MONITORING_DISABLED 1
422
423 #define NUM_DB_PRIORITIES 3
424 /* main state of the ctdb daemon */
425 struct ctdb_context {
426 struct tevent_context *ev;
427 struct timeval ctdbd_start_time;
428 struct timeval last_recovery_started;
429 struct timeval last_recovery_finished;
430 uint32_t recovery_mode;
431 TALLOC_CTX *tickle_update_context;
432 TALLOC_CTX *keepalive_ctx;
433 TALLOC_CTX *check_public_ifaces_ctx;
434 struct ctdb_tunable tunable;
435 enum ctdb_freeze_mode freeze_mode[NUM_DB_PRIORITIES+1];
436 struct ctdb_freeze_handle *freeze_handles[NUM_DB_PRIORITIES+1];
437 bool freeze_transaction_started;
438 uint32_t freeze_transaction_id;
439 ctdb_sock_addr *address;
440 const char *name;
441 const char *db_directory;
442 const char *db_directory_persistent;
443 const char *db_directory_state;
444 struct tdb_wrap *db_persistent_health;
445 uint32_t db_persistent_startup_generation;
446 uint64_t db_persistent_check_errors;
447 uint64_t max_persistent_check_errors;
448 const char *transport;
449 char *recovery_lock_file;
450 int recovery_lock_fd;
451 uint32_t pnn; /* our own pnn */
452 uint32_t num_nodes;
453 uint32_t num_connected;
454 unsigned flags;
455 uint32_t capabilities;
456 struct reqid_context *idr;
457 struct ctdb_node **nodes; /* array of nodes in the cluster - indexed by vnn */
458 struct ctdb_vnn *vnn; /* list of public ip addresses and interfaces */
459 struct ctdb_vnn *single_ip_vnn; /* a structure for the single ip */
460 struct ctdb_iface *ifaces; /* list of local interfaces */
461 char *err_msg;
462 const struct ctdb_methods *methods; /* transport methods */
463 const struct ctdb_upcalls *upcalls; /* transport upcalls */
464 void *private_data; /* private to transport */
465 struct ctdb_db_context *db_list;
466 struct srvid_context *srv;
467 struct ctdb_daemon_data daemon;
468 struct ctdb_statistics statistics;
469 struct ctdb_statistics statistics_current;
470 #define MAX_STAT_HISTORY 100
471 struct ctdb_statistics statistics_history[MAX_STAT_HISTORY];
472 struct ctdb_vnn_map *vnn_map;
473 uint32_t num_clients;
474 uint32_t recovery_master;
475 struct ctdb_client_ip *client_ip_list;
476 bool do_checkpublicip;
477 struct trbt_tree *server_ids;
478 bool do_setsched;
479 const char *event_script_dir;
480 const char *notification_script;
481 const char *default_public_interface;
482 pid_t ctdbd_pid;
483 pid_t recoverd_pid;
484 enum ctdb_runstate runstate;
485 struct ctdb_monitor_state *monitor;
486 int start_as_disabled;
487 int start_as_stopped;
488 bool valgrinding;
489 uint32_t event_script_timeouts; /* counting how many consecutive times an eventscript has timedout */
490 uint32_t *recd_ping_count;
491 TALLOC_CTX *recd_ctx; /* a context used to track recoverd monitoring events */
492 TALLOC_CTX *release_ips_ctx; /* a context used to automatically drop all IPs if we fail to recover the node */
493
494 TALLOC_CTX *event_script_ctx;
495 int active_events;
496
497 struct ctdb_event_script_state *current_monitor;
498 struct ctdb_scripts_wire *last_status[CTDB_EVENT_MAX];
499
500 TALLOC_CTX *banning_ctx;
501
502 struct ctdb_vacuum_child_context *vacuumers;
503
504 /* mapping from pid to ctdb_client * */
505 struct ctdb_client_pid_list *client_pids;
506
507 /* used in the recovery daemon to remember the ip allocation */
508 struct trbt_tree *ip_tree;
509
510 /* Used to defer db attach requests while in recovery mode */
511 struct ctdb_deferred_attach_context *deferred_attach;
512
513 /* if we are a child process, do we have a domain socket to send controls on */
514 bool can_send_controls;
515
516 /* list of event script callback functions that are active */
517 struct event_script_callback *script_callbacks;
518
519 struct ctdb_reloadips_handle *reload_ips;
520
521 const char *nodes_file;
522 const char *public_addresses_file;
523 struct trbt_tree *child_processes;
524
525 /* Used for locking record/db/alldb */
526 struct lock_context *lock_current;
527 struct lock_context *lock_pending;
528 };
529
530 struct ctdb_db_context {
531 struct ctdb_db_context *next, *prev;
532 struct ctdb_context *ctdb;
533 uint32_t db_id;
534 uint32_t priority;
535 bool persistent;
536 bool readonly; /* Do we support read-only delegations ? */
537 bool sticky; /* Do we support sticky records ? */
538 const char *db_name;
539 const char *db_path;
540 struct tdb_wrap *ltdb;
541 struct tdb_context *rottdb; /* ReadOnly tracking TDB */
542 struct ctdb_registered_call *calls; /* list of registered calls */
543 uint32_t seqnum;
544 struct timed_event *seqnum_update;
545 struct ctdb_traverse_local_handle *traverse;
546 struct ctdb_vacuum_handle *vacuum_handle;
547 char *unhealthy_reason;
548 int pending_requests;
549 struct revokechild_handle *revokechild_active;
550 struct ctdb_persistent_state *persistent_state;
551 struct trbt_tree *delete_queue;
552 struct trbt_tree *sticky_records;
553 int (*ctdb_ltdb_store_fn)(struct ctdb_db_context *ctdb_db,
554 TDB_DATA key,
555 struct ctdb_ltdb_header *header,
556 TDB_DATA data);
557
558 /* used to track which records we are currently fetching
559 so we can avoid sending duplicate fetch requests
560 */
561 struct trbt_tree *deferred_fetch;
562 struct trbt_tree *defer_dmaster;
563
564 struct ctdb_db_statistics statistics;
565
566 struct lock_context *lock_current;
567 struct lock_context *lock_pending;
568 int lock_num_current;
569
570 struct ctdb_call_state *pending_calls;
571
572 enum ctdb_freeze_mode freeze_mode;
573 struct ctdb_db_freeze_handle *freeze_handle;
574 bool freeze_transaction_started;
575 uint32_t freeze_transaction_id;
576 uint32_t generation;
577 };
578
579
580 #define CTDB_NO_MEMORY(ctdb, p) do { if (!(p)) { \
581 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
582 ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
583 return -1; }} while (0)
584
585 #define CTDB_NO_MEMORY_VOID(ctdb, p) do { if (!(p)) { \
586 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
587 ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
588 return; }} while (0)
589
590 #define CTDB_NO_MEMORY_NULL(ctdb, p) do { if (!(p)) { \
591 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
592 ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
593 return NULL; }} while (0)
594
595 #define CTDB_NO_MEMORY_FATAL(ctdb, p) do { if (!(p)) { \
596 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
597 ctdb_fatal(ctdb, "Out of memory in " __location__ ); \
598 }} while (0)
599
600 /*
601 struct holding a ctdb_sock_addr and an interface name,
602 used to add/remove public addresses
603 */
604 struct ctdb_control_ip_iface {
605 ctdb_sock_addr addr;
606 uint32_t mask;
607 uint32_t len;
608 char iface[1];
609 };
610
611 /*
612 struct holding a ctdb_sock_addr and an interface name,
613 used for send_gratious_arp
614 */
615 struct ctdb_control_gratious_arp {
616 ctdb_sock_addr addr;
617 uint32_t mask;
618 uint32_t len;
619 char iface[1];
620 };
621
622 /*
623 persistent store control - update this record on all other nodes
624 */
625 struct ctdb_control_persistent_store {
626 uint32_t db_id;
627 uint32_t len;
628 uint8_t data[1];
629 };
630
631 /*
632 structure used for CTDB_SRVID_NODE_FLAGS_CHANGED
633 */
634 struct ctdb_node_flag_change {
635 uint32_t pnn;
636 uint32_t new_flags;
637 uint32_t old_flags;
638 };
639
640 /*
641 struct for admin setting a ban
642 */
643 struct ctdb_ban_info {
644 uint32_t pnn;
645 uint32_t ban_time;
646 };
647
648 enum call_state {CTDB_CALL_WAIT, CTDB_CALL_DONE, CTDB_CALL_ERROR};
649
650 #define CTDB_LMASTER_ANY 0xffffffff
651
652 /*
653 state of a in-progress ctdb call
654 */
655 struct ctdb_call_state {
656 struct ctdb_call_state *next, *prev;
657 enum call_state state;
658 uint32_t reqid;
659 struct ctdb_req_call *c;
660 struct ctdb_db_context *ctdb_db;
661 const char *errmsg;
662 struct ctdb_call *call;
663 uint32_t generation;
664 struct {
665 void (*fn)(struct ctdb_call_state *);
666 void *private_data;
667 } async;
668 };
669
670
671 /* used for fetch_lock */
672 struct ctdb_fetch_handle {
673 struct ctdb_db_context *ctdb_db;
674 TDB_DATA key;
675 TDB_DATA *data;
676 struct ctdb_ltdb_header header;
677 };
678
679 /* internal prototypes */
680 void ctdb_set_error(struct ctdb_context *ctdb, const char *fmt, ...) PRINTF_ATTRIBUTE(2,3);
681 void ctdb_fatal(struct ctdb_context *ctdb, const char *msg);
682 void ctdb_die(struct ctdb_context *ctdb, const char *msg);
683 bool ctdb_set_helper(const char *type, char *helper, size_t size,
684 const char *envvar, const char *dir, const char *file);
685 void ctdb_external_trace(void);
686 bool ctdb_same_address(ctdb_sock_addr *a1, ctdb_sock_addr *a2);
687 int ctdb_parse_address(TALLOC_CTX *mem_ctx, const char *str,
688 ctdb_sock_addr *address);
689 bool ctdb_same_ip(const ctdb_sock_addr *ip1, const ctdb_sock_addr *ip2);
690 bool ctdb_same_sockaddr(const ctdb_sock_addr *ip1, const ctdb_sock_addr *ip2);
691 uint32_t ctdb_hash(const TDB_DATA *key);
692 uint32_t *ctdb_key_to_idkey(TALLOC_CTX *mem_ctx, TDB_DATA key);
693
694 void ctdb_request_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
695 void ctdb_request_dmaster(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
696 void ctdb_request_message(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
697 void ctdb_reply_dmaster(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
698 void ctdb_reply_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
699 void ctdb_reply_error(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
700
701 uint32_t ctdb_lmaster(struct ctdb_context *ctdb, const TDB_DATA *key);
702 int ctdb_ltdb_fetch(struct ctdb_db_context *ctdb_db,
703 TDB_DATA key, struct ctdb_ltdb_header *header,
704 TALLOC_CTX *mem_ctx, TDB_DATA *data);
705 int ctdb_ltdb_store(struct ctdb_db_context *ctdb_db, TDB_DATA key,
706 struct ctdb_ltdb_header *header, TDB_DATA data);
707 int ctdb_ltdb_delete(struct ctdb_db_context *ctdb_db, TDB_DATA key);
708 int ctdb_ltdb_fetch_with_header(struct ctdb_db_context *ctdb_db,
709 TDB_DATA key, struct ctdb_ltdb_header *header,
710 TALLOC_CTX *mem_ctx, TDB_DATA *data);
711 int32_t ctdb_control_start_persistent_update(struct ctdb_context *ctdb,
712 struct ctdb_req_control *c,
713 TDB_DATA recdata);
714 int32_t ctdb_control_cancel_persistent_update(struct ctdb_context *ctdb,
715 struct ctdb_req_control *c,
716 TDB_DATA recdata);
717 void ctdb_queue_packet(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
718 void ctdb_queue_packet_opcode(struct ctdb_context *ctdb, struct ctdb_req_header *hdr, unsigned opcode);
719 int ctdb_ltdb_lock_requeue(struct ctdb_db_context *ctdb_db,
720 TDB_DATA key, struct ctdb_req_header *hdr,
721 void (*recv_pkt)(void *, struct ctdb_req_header *),
722 void *recv_context, bool ignore_generation);
723 int ctdb_ltdb_lock_fetch_requeue(struct ctdb_db_context *ctdb_db,
724 TDB_DATA key, struct ctdb_ltdb_header *header,
725 struct ctdb_req_header *hdr, TDB_DATA *data,
726 void (*recv_pkt)(void *, struct ctdb_req_header *),
727 void *recv_context, bool ignore_generation);
728 void ctdb_input_pkt(struct ctdb_context *ctdb, struct ctdb_req_header *);
729
730 struct ctdb_call_state *ctdb_call_local_send(struct ctdb_db_context *ctdb_db,
731 struct ctdb_call *call,
732 struct ctdb_ltdb_header *header,
733 TDB_DATA *data);
734
735
736 int ctdb_start_daemon(struct ctdb_context *ctdb, bool do_fork);
737
738 /*
739 queue a packet for sending
740 */
741 int ctdb_queue_send(struct ctdb_queue *queue, uint8_t *data, uint32_t length);
742
743 /*
744 setup the fd used by the queue
745 */
746 int ctdb_queue_set_fd(struct ctdb_queue *queue, int fd);
747
748 /*
749 setup a packet queue on a socket
750 */
751 struct ctdb_queue *ctdb_queue_setup(struct ctdb_context *ctdb,
752 TALLOC_CTX *mem_ctx, int fd, int alignment,
753
754 ctdb_queue_cb_fn_t callback,
755 void *private_data, const char *fmt, ...)
756 PRINTF_ATTRIBUTE(7,8);
757
758 /*
759 allocate a packet for use in client<->daemon communication
760 */
761 struct ctdb_req_header *_ctdbd_allocate_pkt(struct ctdb_context *ctdb,
762 TALLOC_CTX *mem_ctx,
763 enum ctdb_operation operation,
764 size_t length, size_t slength,
765 const char *type);
766 #define ctdbd_allocate_pkt(ctdb, mem_ctx, operation, length, type) \
767 (type *)_ctdbd_allocate_pkt(ctdb, mem_ctx, operation, length, sizeof(type), #type)
768
769 struct ctdb_req_header *_ctdb_transport_allocate(struct ctdb_context *ctdb,
770 TALLOC_CTX *mem_ctx,
771 enum ctdb_operation operation,
772 size_t length, size_t slength,
773 const char *type);
774 #define ctdb_transport_allocate(ctdb, mem_ctx, operation, length, type) \
775 (type *)_ctdb_transport_allocate(ctdb, mem_ctx, operation, length, sizeof(type), #type)
776
777 int ctdb_queue_length(struct ctdb_queue *queue);
778
779 /*
780 lock a record in the ltdb, given a key
781 */
782 int ctdb_ltdb_lock(struct ctdb_db_context *ctdb_db, TDB_DATA key);
783
784 /*
785 unlock a record in the ltdb, given a key
786 */
787 int ctdb_ltdb_unlock(struct ctdb_db_context *ctdb_db, TDB_DATA key);
788
789
790 int ctdb_client_send_message(struct ctdb_context *ctdb, uint32_t vnn,
791 uint64_t srvid, TDB_DATA data);
792
793 /*
794 send a ctdb message
795 */
796 int ctdb_daemon_send_message(struct ctdb_context *ctdb, uint32_t pnn,
797 uint64_t srvid, TDB_DATA data);
798
799
800 int ctdb_daemon_call_recv(struct ctdb_call_state *state, struct ctdb_call *call);
801
802 struct ctdb_call_state *ctdb_daemon_call_send_remote(struct ctdb_db_context *ctdb_db,
803 struct ctdb_call *call,
804 struct ctdb_ltdb_header *header);
805
806 int ctdb_call_local(struct ctdb_db_context *ctdb_db, struct ctdb_call *call,
807 struct ctdb_ltdb_header *header, TALLOC_CTX *mem_ctx,
808 TDB_DATA *data, bool updatetdb);
809
810 #define ctdb_reqid_find(ctdb, reqid, type) (type *)_ctdb_reqid_find(ctdb, reqid, #type, __location__)
811
812 int ctdb_socket_connect(struct ctdb_context *ctdb);
813 void ctdb_client_read_cb(uint8_t *data, size_t cnt, void *args);
814
815 void ctdb_request_control(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
816 void ctdb_reply_control(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
817
818 int ctdb_daemon_send_control(struct ctdb_context *ctdb, uint32_t destnode,
819 uint64_t srvid, uint32_t opcode, uint32_t client_id, uint32_t flags,
820 TDB_DATA data,
821 ctdb_control_callback_fn_t callback,
822 void *private_data);
823
824 int32_t ctdb_control_db_attach(struct ctdb_context *ctdb, TDB_DATA indata,
825 TDB_DATA *outdata, uint64_t tdb_flags,
826 bool persistent, uint32_t client_id,
827 struct ctdb_req_control *c,
828 bool *async_reply);
829 int32_t ctdb_control_db_detach(struct ctdb_context *ctdb, TDB_DATA indata,
830 uint32_t client_id);
831
832 int ctdb_daemon_set_call(struct ctdb_context *ctdb, uint32_t db_id,
833 ctdb_fn_t fn, int id);
834
835 int ctdb_control(struct ctdb_context *ctdb, uint32_t destnode, uint64_t srvid,
836 uint32_t opcode, uint32_t flags, TDB_DATA data,
837 TALLOC_CTX *mem_ctx, TDB_DATA *outdata, int32_t *status,
838 struct timeval *timeout, char **errormsg);
839 int ctdb_control_recv(struct ctdb_context *ctdb,
840 struct ctdb_client_control_state *state,
841 TALLOC_CTX *mem_ctx,
842 TDB_DATA *outdata, int32_t *status, char **errormsg);
843
844 struct ctdb_client_control_state *
845 ctdb_control_send(struct ctdb_context *ctdb,
846 uint32_t destnode, uint64_t srvid,
847 uint32_t opcode, uint32_t flags, TDB_DATA data,
848 TALLOC_CTX *mem_ctx,
849 struct timeval *timeout,
850 char **errormsg);
851
852
853
854
855 #define CHECK_CONTROL_DATA_SIZE(size) do { \
856 if (indata.dsize != size) { \
857 DEBUG(0,(__location__ " Invalid data size in opcode %u. Got %u expected %u\n", \
858 opcode, (unsigned)indata.dsize, (unsigned)size)); \
859 return -1; \
860 } \
861 } while (0)
862
863 #define CHECK_CONTROL_MIN_DATA_SIZE(size) do { \
864 if (indata.dsize < size) { \
865 DEBUG(0,(__location__ " Invalid data size in opcode %u. Got %u expected >= %u\n", \
866 opcode, (unsigned)indata.dsize, (unsigned)size)); \
867 return -1; \
868 } \
869 } while (0)
870
871 int ctdb_control_getvnnmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
872 int ctdb_control_setvnnmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
873 int ctdb_control_getdbmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
874 int ctdb_control_getnodemap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
875 int ctdb_control_getnodesfile(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
876
877
878 /* structure used for pulldb control */
879 struct ctdb_control_pulldb {
880 uint32_t db_id;
881 uint32_t lmaster;
882 };
883
884 /* structure used for sending lists of records */
885 struct ctdb_marshall_buffer {
886 uint32_t db_id;
887 uint32_t count;
888 uint8_t data[1];
889 };
890
891 /*
892 structure for setting a tunable
893 */
894 struct ctdb_control_set_tunable {
895 uint32_t value;
896 uint32_t length;
897 uint8_t name[1];
898 };
899
900 /*
901 structure for getting a tunable
902 */
903 struct ctdb_control_get_tunable {
904 uint32_t length;
905 uint8_t name[1];
906 };
907
908 /*
909 structure for listing tunables
910 */
911 struct ctdb_control_list_tunable {
912 uint32_t length;
913 /* returns a : separated list of tunable names */
914 uint8_t data[1];
915 };
916
917
918 struct ctdb_control_transdb {
919 uint32_t db_id;
920 uint32_t transaction_id;
921 };
922
923 /*
924 state of a in-progress ctdb call in client
925 */
926 struct ctdb_client_call_state {
927 enum call_state state;
928 uint32_t reqid;
929 struct ctdb_db_context *ctdb_db;
930 struct ctdb_call *call;
931 struct {
932 void (*fn)(struct ctdb_client_call_state *);
933 void *private_data;
934 } async;
935 };
936
937
938 int32_t ctdb_control_traverse_start_ext(struct ctdb_context *ctdb,
939 TDB_DATA indata,
940 TDB_DATA *outdata,
941 uint32_t srcnode,
942 uint32_t client_id);
943 int32_t ctdb_control_traverse_start(struct ctdb_context *ctdb, TDB_DATA indata,
944 TDB_DATA *outdata, uint32_t srcnode, uint32_t client_id);
945 int32_t ctdb_control_traverse_all(struct ctdb_context *ctdb, TDB_DATA data, TDB_DATA *outdata);
946 int32_t ctdb_control_traverse_all_ext(struct ctdb_context *ctdb, TDB_DATA data, TDB_DATA *outdata);
947 int32_t ctdb_control_traverse_data(struct ctdb_context *ctdb, TDB_DATA data, TDB_DATA *outdata);
948 int32_t ctdb_control_traverse_kill(struct ctdb_context *ctdb, TDB_DATA indata,
949 TDB_DATA *outdata, uint32_t srcnode);
950
951 int daemon_register_message_handler(struct ctdb_context *ctdb, uint32_t client_id, uint64_t srvid);
952 int daemon_deregister_message_handler(struct ctdb_context *ctdb, uint32_t client_id, uint64_t srvid);
953 int daemon_check_srvids(struct ctdb_context *ctdb, TDB_DATA indata,
954 TDB_DATA *outdata);
955
956 int32_t ctdb_ltdb_enable_seqnum(struct ctdb_context *ctdb, uint32_t db_id);
957 int32_t ctdb_ltdb_update_seqnum(struct ctdb_context *ctdb, uint32_t db_id, uint32_t srcnode);
958
959 struct ctdb_rec_data *ctdb_marshall_record(TALLOC_CTX *mem_ctx, uint32_t reqid,
960 TDB_DATA key, struct ctdb_ltdb_header *, TDB_DATA data);
961
962 struct ctdb_rec_data *ctdb_marshall_loop_next(struct ctdb_marshall_buffer *m, struct ctdb_rec_data *r,
963 uint32_t *reqid,
964 struct ctdb_ltdb_header *header,
965 TDB_DATA *key, TDB_DATA *data);
966
967 int32_t ctdb_control_pull_db(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
968 int32_t ctdb_control_push_db(struct ctdb_context *ctdb, TDB_DATA indata);
969
970 int32_t ctdb_control_set_recmode(struct ctdb_context *ctdb,
971 struct ctdb_req_control *c,
972 TDB_DATA indata, bool *async_reply,
973 const char **errormsg);
974 void ctdb_request_control_reply(struct ctdb_context *ctdb, struct ctdb_req_control *c,
975 TDB_DATA *outdata, int32_t status, const char *errormsg);
976
977 int32_t ctdb_control_db_freeze(struct ctdb_context *ctdb,
978 struct ctdb_req_control *c,
979 uint32_t db_id, bool *async_reply);
980 int32_t ctdb_control_db_thaw(struct ctdb_context *ctdb, uint32_t db_id);
981
982 int32_t ctdb_control_freeze(struct ctdb_context *ctdb, struct ctdb_req_control *c, bool *async_reply);
983 int32_t ctdb_control_thaw(struct ctdb_context *ctdb, uint32_t priority,
984 bool check_recmode);
985 bool ctdb_db_frozen(struct ctdb_db_context *ctdb_db);
986 bool ctdb_db_prio_frozen(struct ctdb_context *ctdb, uint32_t priority);
987 bool ctdb_db_all_frozen(struct ctdb_context *ctdb);
988
989 int ctdb_start_recoverd(struct ctdb_context *ctdb);
990 void ctdb_stop_recoverd(struct ctdb_context *ctdb);
991
992 uint32_t ctdb_get_num_active_nodes(struct ctdb_context *ctdb);
993
994 void ctdb_disable_monitoring(struct ctdb_context *ctdb);
995 void ctdb_enable_monitoring(struct ctdb_context *ctdb);
996 void ctdb_stop_monitoring(struct ctdb_context *ctdb);
997 void ctdb_wait_for_first_recovery(struct ctdb_context *ctdb);
998 int ctdb_tcp_init(struct ctdb_context *ctdb);
999 int ctdb_ibw_init(struct ctdb_context *ctdb);
1000 void ctdb_start_tcp_tickle_update(struct ctdb_context *ctdb);
1001 void ctdb_send_keepalive(struct ctdb_context *ctdb, uint32_t destnode);
1002 void ctdb_start_keepalive(struct ctdb_context *ctdb);
1003 void ctdb_stop_keepalive(struct ctdb_context *ctdb);
1004 int32_t ctdb_run_eventscripts(struct ctdb_context *ctdb, struct ctdb_req_control *c, TDB_DATA data, bool *async_reply);
1005
1006
1007 void ctdb_daemon_cancel_controls(struct ctdb_context *ctdb, struct ctdb_node *node);
1008 void ctdb_call_resend_db(struct ctdb_db_context *ctdb);
1009 void ctdb_call_resend_all(struct ctdb_context *ctdb);
1010 void ctdb_node_dead(struct ctdb_node *node);
1011 void ctdb_node_connected(struct ctdb_node *node);
1012 bool ctdb_blocking_freeze(struct ctdb_context *ctdb);
1013 bool set_scheduler(void);
1014 void reset_scheduler(void);
1015
1016 struct tevent_signal *ctdb_init_sigchld(struct ctdb_context *ctdb);
1017 void ctdb_track_child(struct ctdb_context *ctdb, pid_t pid);
1018 pid_t ctdb_fork(struct ctdb_context *ctdb);
1019 void ctdb_set_child_info(TALLOC_CTX *mem_ctx, const char *child_name_fmt, ...);
1020 int ctdb_kill(struct ctdb_context *ctdb, pid_t pid, int signum);
1021
1022 int32_t ctdb_control_takeover_ip(struct ctdb_context *ctdb,
1023 struct ctdb_req_control *c,
1024 TDB_DATA indata,
1025 bool *async_reply);
1026 int32_t ctdb_control_release_ip(struct ctdb_context *ctdb,
1027 struct ctdb_req_control *c,
1028 TDB_DATA indata,
1029 bool *async_reply);
1030 int32_t ctdb_control_ipreallocated(struct ctdb_context *ctdb,
1031 struct ctdb_req_control *c,
1032 bool *async_reply);
1033 int32_t ctdb_control_start_recovery(struct ctdb_context *ctdb,
1034 struct ctdb_req_control *c,
1035 bool *async_reply);
1036 int32_t ctdb_control_end_recovery(struct ctdb_context *ctdb,
1037 struct ctdb_req_control *c,
1038 bool *async_reply);
1039
1040 int ctdb_ctrl_takeover_ip(struct ctdb_context *ctdb, struct timeval timeout,
1041 uint32_t destnode, struct ctdb_public_ip *ip);
1042 int ctdb_ctrl_release_ip(struct ctdb_context *ctdb, struct timeval timeout,
1043 uint32_t destnode, struct ctdb_public_ip *ip);
1044
1045 int32_t ctdb_control_get_public_ips(struct ctdb_context *ctdb,
1046 struct ctdb_req_control *c,
1047 TDB_DATA *outdata);
1048 int ctdb_ctrl_get_public_ips(struct ctdb_context *ctdb,
1049 struct timeval timeout,
1050 uint32_t destnode,
1051 TALLOC_CTX *mem_ctx,
1052 struct ctdb_all_public_ips **ips);
1053 #define CTDB_PUBLIC_IP_FLAGS_ONLY_AVAILABLE 0x00010000
1054 int ctdb_ctrl_get_public_ips_flags(struct ctdb_context *ctdb,
1055 struct timeval timeout, uint32_t destnode,
1056 TALLOC_CTX *mem_ctx,
1057 uint32_t flags,
1058 struct ctdb_all_public_ips **ips);
1059
1060 struct ctdb_control_iface_info {
1061 char name[CTDB_IFACE_SIZE+2];
1062 uint16_t link_state;
1063 uint32_t references;
1064 };
1065
1066 struct ctdb_control_public_ip_info {
1067 struct ctdb_public_ip ip;
1068 uint32_t active_idx;
1069 uint32_t num;
1070 struct ctdb_control_iface_info ifaces[1];
1071 };
1072
1073 struct ctdb_control_get_ifaces {
1074 uint32_t num;
1075 struct ctdb_control_iface_info ifaces[1];
1076 };
1077
1078 int32_t ctdb_control_get_public_ip_info(struct ctdb_context *ctdb,
1079 struct ctdb_req_control *c,
1080 TDB_DATA indata,
1081 TDB_DATA *outdata);
1082 int32_t ctdb_control_get_ifaces(struct ctdb_context *ctdb,
1083 struct ctdb_req_control *c,
1084 TDB_DATA *outdata);
1085 int32_t ctdb_control_set_iface_link(struct ctdb_context *ctdb,
1086 struct ctdb_req_control *c,
1087 TDB_DATA indata);
1088 int ctdb_ctrl_get_public_ip_info(struct ctdb_context *ctdb,
1089 struct timeval timeout, uint32_t destnode,
1090 TALLOC_CTX *mem_ctx,
1091 const ctdb_sock_addr *addr,
1092 struct ctdb_control_public_ip_info **info);
1093 int ctdb_ctrl_get_ifaces(struct ctdb_context *ctdb,
1094 struct timeval timeout, uint32_t destnode,
1095 TALLOC_CTX *mem_ctx,
1096 struct ctdb_control_get_ifaces **ifaces);
1097 int ctdb_ctrl_set_iface_link(struct ctdb_context *ctdb,
1098 struct timeval timeout, uint32_t destnode,
1099 TALLOC_CTX *mem_ctx,
1100 const struct ctdb_control_iface_info *info);
1101
1102 /* from takeover/system.c */
1103 uint32_t uint16_checksum(uint16_t *data, size_t n);
1104 int ctdb_sys_send_arp(const ctdb_sock_addr *addr, const char *iface);
1105 bool ctdb_sys_have_ip(ctdb_sock_addr *addr);
1106 char *ctdb_sys_find_ifname(ctdb_sock_addr *addr);
1107 bool ctdb_sys_check_iface_exists(const char *iface);
1108 int ctdb_get_peer_pid(const int fd, pid_t *peer_pid);
1109 int ctdb_sys_send_tcp(const ctdb_sock_addr *dest,
1110 const ctdb_sock_addr *src,
1111 uint32_t seq, uint32_t ack, int rst);
1112
1113 /* Details of a byte range lock */
1114 struct ctdb_lock_info {
1115 ino_t inode;
1116 off_t start, end;
1117 bool waiting;
1118 bool read_only;
1119 };
1120
1121 int ctdb_set_process_name(const char *name);
1122
1123 typedef void (*client_async_callback)(struct ctdb_context *ctdb, uint32_t node_pnn, int32_t res, TDB_DATA outdata, void *callback_data);
1124
1125 int ctdb_set_public_addresses(struct ctdb_context *ctdb, bool check_addresses);
1126 int ctdb_set_single_public_ip(struct ctdb_context *ctdb,
1127 const char *iface,
1128 const char *ip);
1129 int ctdb_set_notification_script(struct ctdb_context *ctdb, const char *script);
1130 int ctdb_takeover_run(struct ctdb_context *ctdb, struct ctdb_node_map *nodemap,
1131 uint32_t *force_rebalance_nodes,
1132 client_async_callback fail_callback, void *callback_data);
1133
1134 int32_t ctdb_control_tcp_client(struct ctdb_context *ctdb, uint32_t client_id,
1135 TDB_DATA indata);
1136 int32_t ctdb_control_tcp_add(struct ctdb_context *ctdb, TDB_DATA indata, bool tcp_update_needed);
1137 int32_t ctdb_control_tcp_remove(struct ctdb_context *ctdb, TDB_DATA indata);
1138 int32_t ctdb_control_startup(struct ctdb_context *ctdb, uint32_t vnn);
1139 int32_t ctdb_control_kill_tcp(struct ctdb_context *ctdb, TDB_DATA indata);
1140 int32_t ctdb_control_send_gratious_arp(struct ctdb_context *ctdb, TDB_DATA indata);
1141 int32_t ctdb_control_get_tcp_tickle_list(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
1142 int32_t ctdb_control_set_tcp_tickle_list(struct ctdb_context *ctdb, TDB_DATA indata);
1143
1144 void ctdb_takeover_client_destructor_hook(struct ctdb_client *client);
1145 int ctdb_event_script(struct ctdb_context *ctdb, enum ctdb_eventscript_call call);
1146 int ctdb_event_script_args(struct ctdb_context *ctdb, enum ctdb_eventscript_call call,
1147 const char *fmt, ...) PRINTF_ATTRIBUTE(3,4);
1148 int ctdb_event_script_callback(struct ctdb_context *ctdb,
1149 TALLOC_CTX *mem_ctx,
1150 void (*callback)(struct ctdb_context *, int, void *),
1151 void *private_data,
1152 enum ctdb_eventscript_call call,
1153 const char *fmt, ...) PRINTF_ATTRIBUTE(6,7);
1154 void ctdb_release_all_ips(struct ctdb_context *ctdb);
1155
1156 void set_nonblocking(int fd);
1157 void set_close_on_exec(int fd);
1158
1159 bool ctdb_recovery_have_lock(struct ctdb_context *ctdb);
1160 bool ctdb_recovery_lock(struct ctdb_context *ctdb);
1161 void ctdb_recovery_unlock(struct ctdb_context *ctdb);
1162
1163 int ctdb_set_recovery_lock_file(struct ctdb_context *ctdb, const char *file);
1164
1165 int32_t ctdb_control_get_tunable(struct ctdb_context *ctdb, TDB_DATA indata,
1166 TDB_DATA *outdata);
1167 int32_t ctdb_control_set_tunable(struct ctdb_context *ctdb, TDB_DATA indata);
1168 int32_t ctdb_control_list_tunables(struct ctdb_context *ctdb, TDB_DATA *outdata);
1169 int32_t ctdb_control_try_delete_records(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
1170 int32_t ctdb_control_receive_records(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
1171 int32_t ctdb_control_add_public_address(struct ctdb_context *ctdb, TDB_DATA indata);
1172 int32_t ctdb_control_del_public_address(struct ctdb_context *ctdb,
1173 struct ctdb_req_control *c,
1174 TDB_DATA recdata, bool *async_reply);
1175
1176 void ctdb_tunables_set_defaults(struct ctdb_context *ctdb);
1177
1178 int32_t ctdb_control_modflags(struct ctdb_context *ctdb, TDB_DATA indata);
1179
1180 int ctdb_ctrl_get_all_tunables(struct ctdb_context *ctdb,
1181 struct timeval timeout,
1182 uint32_t destnode,
1183 struct ctdb_tunable *tunables);
1184
1185 bool parse_ip_mask(const char *s, const char *iface, ctdb_sock_addr *addr, unsigned *mask);
1186 bool parse_ip_port(const char *s, ctdb_sock_addr *addr);
1187 bool parse_ip(const char *s, const char *iface, unsigned port, ctdb_sock_addr *addr);
1188 bool parse_ipv4(const char *s, unsigned port, struct sockaddr_in *sin);
1189
1190
1191 int ctdb_sys_open_capture_socket(const char *iface, void **private_data);
1192 int ctdb_sys_close_capture_socket(void *private_data);
1193 int ctdb_sys_read_tcp_packet(int s, void *private_data, ctdb_sock_addr *src, ctdb_sock_addr *dst, uint32_t *ack_seq, uint32_t *seq);
1194
1195 int ctdb_ctrl_killtcp(struct ctdb_context *ctdb,
1196 struct timeval timeout,
1197 uint32_t destnode,
1198 struct ctdb_tcp_connection *killtcp);
1199
1200 int ctdb_ctrl_add_public_ip(struct ctdb_context *ctdb,
1201 struct timeval timeout,
1202 uint32_t destnode,
1203 struct ctdb_control_ip_iface *pub);
1204
1205 int ctdb_ctrl_del_public_ip(struct ctdb_context *ctdb,
1206 struct timeval timeout,
1207 uint32_t destnode,
1208 struct ctdb_control_ip_iface *pub);
1209
1210 int ctdb_ctrl_gratious_arp(struct ctdb_context *ctdb,
1211 struct timeval timeout,
1212 uint32_t destnode,
1213 ctdb_sock_addr *addr,
1214 const char *ifname);
1215
1216 int ctdb_ctrl_get_tcp_tickles(struct ctdb_context *ctdb,
1217 struct timeval timeout,
1218 uint32_t destnode,
1219 TALLOC_CTX *mem_ctx,
1220 ctdb_sock_addr *addr,
1221 struct ctdb_control_tcp_tickle_list **list);
1222
1223
1224 int32_t ctdb_control_register_server_id(struct ctdb_context *ctdb,
1225 uint32_t client_id,
1226 TDB_DATA indata);
1227 int32_t ctdb_control_check_server_id(struct ctdb_context *ctdb,
1228 TDB_DATA indata);
1229 int32_t ctdb_control_unregister_server_id(struct ctdb_context *ctdb,
1230 TDB_DATA indata);
1231 int32_t ctdb_control_get_server_id_list(struct ctdb_context *ctdb,
1232 TDB_DATA *outdata);
1233 int32_t ctdb_control_uptime(struct ctdb_context *ctdb,
1234 TDB_DATA *outdata);
1235
1236 int ctdb_attach_databases(struct ctdb_context *ctdb);
1237
1238 int32_t ctdb_control_persistent_store(struct ctdb_context *ctdb,
1239 struct ctdb_req_control *c,
1240 TDB_DATA recdata, bool *async_reply);
1241 int32_t ctdb_control_update_record(struct ctdb_context *ctdb,
1242 struct ctdb_req_control *c, TDB_DATA recdata,
1243 bool *async_reply);
1244
1245 int32_t ctdb_control_trans3_commit(struct ctdb_context *ctdb,
1246 struct ctdb_req_control *c,
1247 TDB_DATA recdata, bool *async_reply);
1248
1249 void ctdb_persistent_finish_trans3_commits(struct ctdb_context *ctdb);
1250
1251 int32_t ctdb_control_db_transaction_start(struct ctdb_context *ctdb,
1252 TDB_DATA indata);
1253 int32_t ctdb_control_db_transaction_commit(struct ctdb_context *ctdb,
1254 TDB_DATA indata);
1255 int32_t ctdb_control_db_transaction_cancel(struct ctdb_context *ctdb,
1256 TDB_DATA indata);
1257
1258 int32_t ctdb_control_transaction_start(struct ctdb_context *ctdb, uint32_t id);
1259 int32_t ctdb_control_transaction_commit(struct ctdb_context *ctdb, uint32_t id);
1260 int32_t ctdb_control_transaction_cancel(struct ctdb_context *ctdb);
1261 int32_t ctdb_control_wipe_database(struct ctdb_context *ctdb, TDB_DATA indata);
1262 int32_t ctdb_control_db_set_healthy(struct ctdb_context *ctdb, TDB_DATA indata);
1263 int32_t ctdb_control_db_get_health(struct ctdb_context *ctdb,
1264 TDB_DATA indata,
1265 TDB_DATA *outdata);
1266
1267
1268 int ctdb_repack(struct ctdb_context *ctdb, int argc, const char **argv);
1269
1270 int32_t ctdb_monitoring_mode(struct ctdb_context *ctdb);
1271 bool ctdb_stopped_monitoring(struct ctdb_context *ctdb);
1272 int ctdb_set_child_logging(struct ctdb_context *ctdb);
1273 void lockdown_memory(bool valgrinding);
1274
1275 struct client_async_data {
1276 enum ctdb_controls opcode;
1277 bool dont_log_errors;
1278 uint32_t count;
1279 uint32_t fail_count;
1280 client_async_callback callback;
1281 client_async_callback fail_callback;
1282 void *callback_data;
1283 };
1284 void ctdb_client_async_add(struct client_async_data *data, struct ctdb_client_control_state *state);
1285 int ctdb_client_async_wait(struct ctdb_context *ctdb, struct client_async_data *data);
1286 int ctdb_client_async_control(struct ctdb_context *ctdb,
1287 enum ctdb_controls opcode,
1288 uint32_t *nodes,
1289 uint64_t srvid,
1290 struct timeval timeout,
1291 bool dont_log_errors,
1292 TDB_DATA data,
1293 client_async_callback client_callback,
1294 client_async_callback fail_callback,
1295 void *callback_data);
1296
1297 struct ctdb_node_map *
1298 ctdb_node_list_to_map(struct ctdb_node **nodes, uint32_t num_nodes,
1299 TALLOC_CTX *mem_ctx);
1300 struct ctdb_node_map *ctdb_read_nodes_file(TALLOC_CTX *mem_ctx,
1301 const char *nlist);
1302 void ctdb_load_nodes_file(struct ctdb_context *ctdb);
1303
1304 int ctdb_control_reload_nodes_file(struct ctdb_context *ctdb, uint32_t opcode);
1305
1306 int32_t ctdb_dump_memory(struct ctdb_context *ctdb, TDB_DATA *outdata);
1307 int32_t ctdb_control_get_capabilities(struct ctdb_context *ctdb, TDB_DATA *outdata);
1308
1309 char *ctdb_addr_to_str(ctdb_sock_addr *addr);
1310 unsigned ctdb_addr_to_port(ctdb_sock_addr *addr);
1311 void ctdb_canonicalize_ip(const ctdb_sock_addr *ip, ctdb_sock_addr *cip);
1312
1313 int32_t ctdb_control_recd_ping(struct ctdb_context *ctdb);
1314 int32_t ctdb_control_set_recmaster(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata);
1315
1316 extern int script_log_level;
1317 extern bool fast_start;
1318 extern const char *ctdbd_pidfile;
1319
1320 int32_t ctdb_control_get_event_script_status(struct ctdb_context *ctdb,
1321 uint32_t call_type,
1322 TDB_DATA *outdata);
1323
1324 int ctdb_ctrl_report_recd_lock_latency(struct ctdb_context *ctdb, struct timeval timeout, double latency);
1325
1326 int32_t ctdb_control_stop_node(struct ctdb_context *ctdb);
1327 int32_t ctdb_control_continue_node(struct ctdb_context *ctdb);
1328
1329 void ctdb_stop_vacuuming(struct ctdb_context *ctdb);
1330 int ctdb_vacuum_init(struct ctdb_db_context *ctdb_db);
1331
1332 int32_t ctdb_control_enable_script(struct ctdb_context *ctdb, TDB_DATA indata);
1333 int32_t ctdb_control_disable_script(struct ctdb_context *ctdb, TDB_DATA indata);
1334
1335 void ctdb_local_node_got_banned(struct ctdb_context *ctdb);
1336 int32_t ctdb_control_set_ban_state(struct ctdb_context *ctdb, TDB_DATA indata);
1337 int32_t ctdb_control_get_ban_state(struct ctdb_context *ctdb, TDB_DATA *outdata);
1338 int32_t ctdb_control_set_db_priority(struct ctdb_context *ctdb, TDB_DATA indata,
1339 uint32_t client_id);
1340 void ctdb_ban_self(struct ctdb_context *ctdb);
1341
1342 int32_t ctdb_control_register_notify(struct ctdb_context *ctdb, uint32_t client_id, TDB_DATA indata);
1343
1344 int32_t ctdb_control_deregister_notify(struct ctdb_context *ctdb, uint32_t client_id, TDB_DATA indata);
1345
1346 struct ctdb_log_state *ctdb_vfork_with_logging(TALLOC_CTX *mem_ctx,
1347 struct ctdb_context *ctdb,
1348 const char *log_prefix,
1349 const char *helper,
1350 int helper_argc,
1351 const char **helper_argv,
1352 void (*logfn)(const char *, uint16_t, void *),
1353 void *logfn_private, pid_t *pid);
1354
1355
1356 int32_t ctdb_control_process_exists(struct ctdb_context *ctdb, pid_t pid);
1357 struct ctdb_client *ctdb_find_client_by_pid(struct ctdb_context *ctdb, pid_t pid);
1358
1359 int32_t ctdb_control_get_db_seqnum(struct ctdb_context *ctdb,
1360 TDB_DATA indata,
1361 TDB_DATA *outdata);
1362
1363 int ctdb_load_persistent_health(struct ctdb_context *ctdb,
1364 struct ctdb_db_context *ctdb_db);
1365 int ctdb_update_persistent_health(struct ctdb_context *ctdb,
1366 struct ctdb_db_context *ctdb_db,
1367 const char *reason,/* NULL means healthy */
1368 int num_healthy_nodes);
1369 int ctdb_recheck_persistent_health(struct ctdb_context *ctdb);
1370
1371 void ctdb_run_notification_script(struct ctdb_context *ctdb, const char *event);
1372
1373 int verify_remote_ip_allocation(struct ctdb_context *ctdb,
1374 struct ctdb_all_public_ips *ips,
1375 uint32_t pnn);
1376 int update_ip_assignment_tree(struct ctdb_context *ctdb,
1377 struct ctdb_public_ip *ip);
1378 void clear_ip_assignment_tree(struct ctdb_context *ctdb);
1379
1380 int ctdb_init_tevent_logging(struct ctdb_context *ctdb);
1381
1382 int ctdb_statistics_init(struct ctdb_context *ctdb);
1383
1384 int32_t ctdb_control_get_stat_history(struct ctdb_context *ctdb,
1385 struct ctdb_req_control *c,
1386 TDB_DATA *outdata);
1387
1388 int ctdb_deferred_drop_all_ips(struct ctdb_context *ctdb);
1389
1390 int ctdb_process_deferred_attach(struct ctdb_context *ctdb);
1391
1392 /**
1393 * structure to pass to a schedule_for_deletion_control
1394 */
1395 struct ctdb_control_schedule_for_deletion {
1396 uint32_t db_id;
1397 struct ctdb_ltdb_header hdr;
1398 uint32_t keylen;
1399 uint8_t key[1]; /* key[] */
1400 };
1401
1402 int32_t ctdb_control_schedule_for_deletion(struct ctdb_context *ctdb,
1403 TDB_DATA indata);
1404
1405
1406 int32_t ctdb_local_schedule_for_deletion(struct ctdb_db_context *ctdb_db,
1407 const struct ctdb_ltdb_header *hdr,
1408 TDB_DATA key);
1409
1410 void ctdb_local_remove_from_delete_queue(struct ctdb_db_context *ctdb_db,
1411 const struct ctdb_ltdb_header *hdr,
1412 const TDB_DATA key);
1413
1414 struct ctdb_ltdb_header *ctdb_header_from_record_handle(struct ctdb_record_handle *h);
1415
1416 int ctdb_trackingdb_add_pnn(struct ctdb_context *ctdb, TDB_DATA *data, uint32_t pnn);
1417
1418 typedef void (*ctdb_trackingdb_cb)(struct ctdb_context *ctdb, uint32_t pnn, void *private_data);
1419
1420 void ctdb_trackingdb_traverse(struct ctdb_context *ctdb, TDB_DATA data, ctdb_trackingdb_cb cb, void *private_data);
1421
1422 int ctdb_start_revoke_ro_record(struct ctdb_context *ctdb, struct ctdb_db_context *ctdb_db, TDB_DATA key, struct ctdb_ltdb_header *header, TDB_DATA data);
1423
1424 typedef void (*deferred_requeue_fn)(void *call_context, struct ctdb_req_header *hdr);
1425
1426 int ctdb_add_revoke_deferred_call(struct ctdb_context *ctdb, struct ctdb_db_context *ctdb_db, TDB_DATA key, struct ctdb_req_header *hdr, deferred_requeue_fn fn, void *call_context);
1427
1428 int ctdb_set_db_readonly(struct ctdb_context *ctdb, struct ctdb_db_context *ctdb_db);
1429
1430 int ctdb_null_func(struct ctdb_call_info *call);
1431
1432 int ctdb_fetch_func(struct ctdb_call_info *call);
1433
1434 int ctdb_fetch_with_header_func(struct ctdb_call_info *call);
1435
1436 void ctdb_db_statistics_reset(struct ctdb_db_context *ctdb_db);
1437
1438 int32_t ctdb_control_get_db_statistics(struct ctdb_context *ctdb,
1439 uint32_t db_id,
1440 TDB_DATA *outdata);
1441
1442 int ctdb_set_db_sticky(struct ctdb_context *ctdb, struct ctdb_db_context *ctdb_db);
1443
1444 /*
1445 description for a message to reload all ips via recovery master/daemon
1446 */
1447 struct reloadips_all_reply {
1448 uint32_t pnn;
1449 uint64_t srvid;
1450 };
1451
1452 int32_t ctdb_control_reload_public_ips(struct ctdb_context *ctdb, struct ctdb_req_control *c, bool *async_reply);
1453
1454 /* from server/ctdb_lock.c */
1455 struct lock_request;
1456
1457 typedef int (*ctdb_db_handler_t)(struct ctdb_db_context *ctdb_db,
1458 void *private_data);
1459
1460 int ctdb_db_prio_iterator(struct ctdb_context *ctdb, uint32_t priority,
1461 ctdb_db_handler_t handler, void *private_data);
1462 int ctdb_db_iterator(struct ctdb_context *ctdb, ctdb_db_handler_t handler,
1463 void *private_data);
1464
1465 int ctdb_lockall_mark_prio(struct ctdb_context *ctdb, uint32_t priority);
1466 int ctdb_lockall_unmark_prio(struct ctdb_context *ctdb, uint32_t priority);
1467
1468 int ctdb_lockdb_mark(struct ctdb_db_context *ctdb_db);
1469 int ctdb_lockdb_unmark(struct ctdb_db_context *ctdb_db);
1470
1471 struct lock_request *ctdb_lock_record(TALLOC_CTX *mem_ctx,
1472 struct ctdb_db_context *ctdb_db,
1473 TDB_DATA key,
1474 bool auto_mark,
1475 void (*callback)(void *, bool),
1476 void *private_data);
1477
1478 struct lock_request *ctdb_lock_db(TALLOC_CTX *mem_ctx,
1479 struct ctdb_db_context *ctdb_db,
1480 bool auto_mark,
1481 void (*callback)(void *, bool),
1482 void *private_data);
1483
1484 struct lock_request *ctdb_lock_alldb_prio(TALLOC_CTX *mem_ctx,
1485 struct ctdb_context *ctdb,
1486 uint32_t priority,
1487 bool auto_mark,
1488 void (*callback)(void *, bool),
1489 void *private_data);
1490
1491 struct lock_request *ctdb_lock_alldb(TALLOC_CTX *mem_ctx,
1492 struct ctdb_context *ctdb,
1493 bool auto_mark,
1494 void (*callback)(void *, bool),
1495 void *private_data);
1496
1497 int mkdir_p(const char *dir, int mode);
1498 void mkdir_p_or_die(const char *dir, int mode);
1499
1500 ssize_t sys_read(int fd, void *buf, size_t count);
1501 ssize_t sys_write(int fd, const void *buf, size_t count);
1502
1503 #endif
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