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ctdb-locking: Implement active lock requests limit per database
[Samba/wip.git] / ctdb / include / ctdb_private.h
blob8135112f62c78567523f62e999aefc3bf22dd722
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 * pid of the ctdbd daemon
42 */
43 extern pid_t ctdbd_pid;
44
45 /*
46 a tcp connection description
47 also used by tcp_add and tcp_remove controls
48 */
49 struct ctdb_tcp_connection {
50 ctdb_sock_addr src_addr;
51 ctdb_sock_addr dst_addr;
52 };
53
54 /* the wire representation for a tcp tickle array */
55 struct ctdb_tcp_wire_array {
56 uint32_t num;
57 struct ctdb_tcp_connection connections[1];
58 };
59
60 /* the list of tcp tickles used by get/set tcp tickle list */
61 struct ctdb_control_tcp_tickle_list {
62 ctdb_sock_addr addr;
63 struct ctdb_tcp_wire_array tickles;
64 };
65
66 /*
67 array of tcp connections
68 */
69 struct ctdb_tcp_array {
70 uint32_t num;
71 struct ctdb_tcp_connection *connections;
72 };
73
74
75 /* all tunable variables go in here */
76 struct ctdb_tunable {
77 uint32_t max_redirect_count;
78 uint32_t seqnum_interval; /* unit is ms */
79 uint32_t control_timeout;
80 uint32_t traverse_timeout;
81 uint32_t keepalive_interval;
82 uint32_t keepalive_limit;
83 uint32_t recover_timeout;
84 uint32_t recover_interval;
85 uint32_t election_timeout;
86 uint32_t takeover_timeout;
87 uint32_t monitor_interval;
88 uint32_t tickle_update_interval;
89 uint32_t script_timeout;
90 uint32_t script_timeout_count; /* allow dodgy scripts to hang this many times in a row before we mark the node unhealthy */
91 uint32_t script_unhealthy_on_timeout; /* obsolete */
92 uint32_t recovery_grace_period;
93 uint32_t recovery_ban_period;
94 uint32_t database_hash_size;
95 uint32_t database_max_dead;
96 uint32_t rerecovery_timeout;
97 uint32_t enable_bans;
98 uint32_t deterministic_public_ips;
99 uint32_t reclock_ping_period;
100 uint32_t no_ip_failback;
101 uint32_t disable_ip_failover;
102 uint32_t verbose_memory_names;
103 uint32_t recd_ping_timeout;
104 uint32_t recd_ping_failcount;
105 uint32_t log_latency_ms;
106 uint32_t reclock_latency_ms;
107 uint32_t recovery_drop_all_ips;
108 uint32_t verify_recovery_lock;
109 uint32_t vacuum_interval;
110 uint32_t vacuum_max_run_time;
111 uint32_t repack_limit;
112 uint32_t vacuum_limit;
113 uint32_t max_queue_depth_drop_msg;
114 uint32_t use_status_events_for_monitoring;
115 uint32_t allow_unhealthy_db_read;
116 uint32_t stat_history_interval;
117 uint32_t deferred_attach_timeout;
118 uint32_t vacuum_fast_path_count;
119 uint32_t lcp2_public_ip_assignment;
120 uint32_t allow_client_db_attach;
121 uint32_t recover_pdb_by_seqnum;
122 uint32_t deferred_rebalance_on_node_add;
123 uint32_t fetch_collapse;
124 uint32_t hopcount_make_sticky;
125 uint32_t sticky_duration;
126 uint32_t sticky_pindown;
127 uint32_t no_ip_takeover;
128 uint32_t db_record_count_warn;
129 uint32_t db_record_size_warn;
130 uint32_t db_size_warn;
131 uint32_t pulldb_preallocation_size;
132 uint32_t no_ip_host_on_all_disabled;
133 uint32_t samba3_hack;
134 };
135
136 /*
137 an installed ctdb remote call
138 */
139 struct ctdb_registered_call {
140 struct ctdb_registered_call *next, *prev;
141 uint32_t id;
142 ctdb_fn_t fn;
143 };
144
145 /*
146 this address structure might need to be generalised later for some
147 transports
148 */
149 struct ctdb_address {
150 const char *address;
151 int port;
152 };
153
154 /*
155 check that a pnn is valid
156 */
157 #define ctdb_validate_pnn(ctdb, pnn) (((uint32_t)(pnn)) < (ctdb)->num_nodes)
158
159
160 /* called from the queue code when a packet comes in. Called with data==NULL
161 on error */
162 typedef void (*ctdb_queue_cb_fn_t)(uint8_t *data, size_t length,
163 void *private_data);
164
165 /* used for callbacks in ctdb_control requests */
166 typedef void (*ctdb_control_callback_fn_t)(struct ctdb_context *,
167 int32_t status, TDB_DATA data,
168 const char *errormsg,
169 void *private_data);
170 /*
171 structure describing a connected client in the daemon
172 */
173 struct ctdb_client {
174 struct ctdb_context *ctdb;
175 int fd;
176 struct ctdb_queue *queue;
177 uint32_t client_id;
178 pid_t pid;
179 struct ctdb_tcp_list *tcp_list;
180 uint32_t db_id;
181 uint32_t num_persistent_updates;
182 struct ctdb_client_notify_list *notify;
183 };
184
185 struct ctdb_iface;
186
187 /* state associated with a public ip address */
188 struct ctdb_vnn {
189 struct ctdb_vnn *prev, *next;
190
191 struct ctdb_iface *iface;
192 const char **ifaces;
193 ctdb_sock_addr public_address;
194 uint8_t public_netmask_bits;
195
196 /* the node number that is serving this public address, if any.
197 If no node serves this ip it is set to -1 */
198 int32_t pnn;
199
200 /* List of clients to tickle for this public address */
201 struct ctdb_tcp_array *tcp_array;
202
203 /* whether we need to update the other nodes with changes to our list
204 of connected clients */
205 bool tcp_update_needed;
206
207 /* a context to hang sending gratious arp events off */
208 TALLOC_CTX *takeover_ctx;
209
210 struct ctdb_kill_tcp *killtcp;
211
212 /* Set to true any time an update to this VNN is in flight.
213 This helps to avoid races. */
214 bool update_in_flight;
215 };
216
217 /*
218 state associated with one node
219 */
220 struct ctdb_node {
221 struct ctdb_context *ctdb;
222 struct ctdb_address address;
223 const char *name; /* for debug messages */
224 void *private_data; /* private to transport */
225 uint32_t pnn;
226 uint32_t flags;
227
228 /* used by the dead node monitoring */
229 uint32_t dead_count;
230 uint32_t rx_cnt;
231 uint32_t tx_cnt;
232
233 /* used to track node capabilities, is only valid/tracked inside the
234 recovery daemon.
235 */
236 uint32_t capabilities;
237
238 /* a list of controls pending to this node, so we can time them out quickly
239 if the node becomes disconnected */
240 struct daemon_control_state *pending_controls;
241
242 /* used by the recovery daemon when distributing ip addresses
243 across the nodes. it needs to know which public ip's can be handled
244 by each node.
245 */
246 struct ctdb_all_public_ips *known_public_ips;
247 struct ctdb_all_public_ips *available_public_ips;
248 /* used by the recovery dameon to track when a node should be banned */
249 struct ctdb_banning_state *ban_state;
250 };
251
252 /*
253 transport specific methods
254 */
255 struct ctdb_methods {
256 int (*initialise)(struct ctdb_context *); /* initialise transport structures */
257 int (*start)(struct ctdb_context *); /* start the transport */
258 int (*add_node)(struct ctdb_node *); /* setup a new node */
259 int (*connect_node)(struct ctdb_node *); /* connect to node */
260 int (*queue_pkt)(struct ctdb_node *, uint8_t *data, uint32_t length);
261 void *(*allocate_pkt)(TALLOC_CTX *mem_ctx, size_t );
262 void (*shutdown)(struct ctdb_context *); /* shutdown transport */
263 void (*restart)(struct ctdb_node *); /* stop and restart the connection */
264 };
265
266 /*
267 transport calls up to the ctdb layer
268 */
269 struct ctdb_upcalls {
270 /* recv_pkt is called when a packet comes in */
271 void (*recv_pkt)(struct ctdb_context *, uint8_t *data, uint32_t length);
272
273 /* node_dead is called when an attempt to send to a node fails */
274 void (*node_dead)(struct ctdb_node *);
275
276 /* node_connected is called when a connection to a node is established */
277 void (*node_connected)(struct ctdb_node *);
278 };
279
280 /* list of message handlers - needs to be changed to a more efficient data
281 structure so we can find a message handler given a srvid quickly */
282 struct ctdb_message_list_header {
283 struct ctdb_message_list_header *next, *prev;
284 struct ctdb_context *ctdb;
285 uint64_t srvid;
286 struct ctdb_message_list *m;
287 };
288 struct ctdb_message_list {
289 struct ctdb_message_list *next, *prev;
290 struct ctdb_message_list_header *h;
291 ctdb_msg_fn_t message_handler;
292 void *message_private;
293 };
294
295 /* additional data required for the daemon mode */
296 struct ctdb_daemon_data {
297 int sd;
298 char *name;
299 struct ctdb_queue *queue;
300 };
301
302
303 #define CTDB_UPDATE_STAT(ctdb, counter, value) \
304 { \
305 if (value > ctdb->statistics.counter) { \
306 ctdb->statistics.counter = c->hopcount; \
307 } \
308 if (value > ctdb->statistics_current.counter) { \
309 ctdb->statistics_current.counter = c->hopcount; \
310 } \
311 }
312
313 #define CTDB_INCREMENT_STAT(ctdb, counter) \
314 { \
315 ctdb->statistics.counter++; \
316 ctdb->statistics_current.counter++; \
317 }
318
319 #define CTDB_DECREMENT_STAT(ctdb, counter) \
320 { \
321 if (ctdb->statistics.counter > 0) \
322 ctdb->statistics.counter--; \
323 if (ctdb->statistics_current.counter > 0) \
324 ctdb->statistics_current.counter--; \
325 }
326
327 #define CTDB_INCREMENT_DB_STAT(ctdb_db, counter) \
328 { \
329 ctdb_db->statistics.counter++; \
330 }
331
332 #define CTDB_DECREMENT_DB_STAT(ctdb_db, counter) \
333 { \
334 if (ctdb_db->statistics.counter > 0) \
335 ctdb_db->statistics.counter--; \
336 }
337
338 #define CTDB_UPDATE_RECLOCK_LATENCY(ctdb, name, counter, value) \
339 { \
340 if (value > ctdb->statistics.counter.max) \
341 ctdb->statistics.counter.max = value; \
342 if (value > ctdb->statistics_current.counter.max) \
343 ctdb->statistics_current.counter.max = value; \
344 \
345 if (ctdb->statistics.counter.num == 0 || \
346 value < ctdb->statistics.counter.min) \
347 ctdb->statistics.counter.min = value; \
348 if (ctdb->statistics_current.counter.num == 0 || \
349 value < ctdb->statistics_current.counter.min) \
350 ctdb->statistics_current.counter.min = value; \
351 \
352 ctdb->statistics.counter.total += value; \
353 ctdb->statistics_current.counter.total += value; \
354 \
355 ctdb->statistics.counter.num++; \
356 ctdb->statistics_current.counter.num++; \
357 \
358 if (ctdb->tunable.reclock_latency_ms != 0) { \
359 if (value*1000 > ctdb->tunable.reclock_latency_ms) { \
360 DEBUG(DEBUG_ERR, \
361 ("High RECLOCK latency %fs for operation %s\n", \
362 value, name)); \
363 } \
364 } \
365 }
366
367 #define CTDB_UPDATE_DB_LATENCY(ctdb_db, operation, counter, value) \
368 { \
369 if (value > ctdb_db->statistics.counter.max) \
370 ctdb_db->statistics.counter.max = value; \
371 if (ctdb_db->statistics.counter.num == 0 || \
372 value < ctdb_db->statistics.counter.min) \
373 ctdb_db->statistics.counter.min = value; \
374 \
375 ctdb_db->statistics.counter.total += value; \
376 ctdb_db->statistics.counter.num++; \
377 \
378 if (ctdb_db->ctdb->tunable.log_latency_ms != 0) { \
379 if (value*1000 > ctdb_db->ctdb->tunable.log_latency_ms) { \
380 DEBUG(DEBUG_ERR, \
381 ("High latency %.6fs for operation %s on database %s\n",\
382 value, operation, ctdb_db->db_name)); \
383 } \
384 } \
385 }
386
387 #define CTDB_UPDATE_LATENCY(ctdb, db, operation, counter, t) \
388 { \
389 double l = timeval_elapsed(&t); \
390 \
391 if (l > ctdb->statistics.counter.max) \
392 ctdb->statistics.counter.max = l; \
393 if (l > ctdb->statistics_current.counter.max) \
394 ctdb->statistics_current.counter.max = l; \
395 \
396 if (ctdb->statistics.counter.num == 0 || \
397 l < ctdb->statistics.counter.min) \
398 ctdb->statistics.counter.min = l; \
399 if (ctdb->statistics_current.counter.num == 0 || \
400 l < ctdb->statistics_current.counter.min) \
401 ctdb->statistics_current.counter.min = l; \
402 \
403 ctdb->statistics.counter.total += l; \
404 ctdb->statistics_current.counter.total += l; \
405 \
406 ctdb->statistics.counter.num++; \
407 ctdb->statistics_current.counter.num++; \
408 \
409 if (ctdb->tunable.log_latency_ms != 0) { \
410 if (l*1000 > ctdb->tunable.log_latency_ms) { \
411 DEBUG(DEBUG_WARNING, \
412 ("High latency %.6fs for operation %s on database %s\n",\
413 l, operation, db->db_name)); \
414 } \
415 } \
416 }
417
418
419
420 /* a structure that contains the elements required for the write record
421 control
422 */
423 struct ctdb_write_record {
424 uint32_t dbid;
425 uint32_t keylen;
426 uint32_t datalen;
427 unsigned char blob[1];
428 };
429
430 enum ctdb_freeze_mode {CTDB_FREEZE_NONE, CTDB_FREEZE_PENDING, CTDB_FREEZE_FROZEN};
431
432 enum ctdb_runstate {
433 CTDB_RUNSTATE_UNKNOWN,
434 CTDB_RUNSTATE_INIT,
435 CTDB_RUNSTATE_SETUP,
436 CTDB_RUNSTATE_FIRST_RECOVERY,
437 CTDB_RUNSTATE_STARTUP,
438 CTDB_RUNSTATE_RUNNING,
439 CTDB_RUNSTATE_SHUTDOWN,
440 };
441
442 const char *runstate_to_string(enum ctdb_runstate runstate);
443 enum ctdb_runstate runstate_from_string(const char *label);
444 void ctdb_set_runstate(struct ctdb_context *ctdb, enum ctdb_runstate runstate);
445
446 void ctdb_shutdown_sequence(struct ctdb_context *ctdb, int exit_code);
447
448 #define CTDB_MONITORING_ACTIVE 0
449 #define CTDB_MONITORING_DISABLED 1
450
451 #define NUM_DB_PRIORITIES 3
452 /* main state of the ctdb daemon */
453 struct ctdb_context {
454 struct tevent_context *ev;
455 struct timeval ctdbd_start_time;
456 struct timeval last_recovery_started;
457 struct timeval last_recovery_finished;
458 uint32_t recovery_mode;
459 TALLOC_CTX *tickle_update_context;
460 TALLOC_CTX *keepalive_ctx;
461 TALLOC_CTX *check_public_ifaces_ctx;
462 struct ctdb_tunable tunable;
463 enum ctdb_freeze_mode freeze_mode[NUM_DB_PRIORITIES+1];
464 struct ctdb_freeze_handle *freeze_handles[NUM_DB_PRIORITIES+1];
465 bool freeze_transaction_started;
466 uint32_t freeze_transaction_id;
467 struct ctdb_address address;
468 const char *name;
469 const char *db_directory;
470 const char *db_directory_persistent;
471 const char *db_directory_state;
472 struct tdb_wrap *db_persistent_health;
473 uint32_t db_persistent_startup_generation;
474 uint64_t db_persistent_check_errors;
475 uint64_t max_persistent_check_errors;
476 const char *transport;
477 char *recovery_lock_file;
478 int recovery_lock_fd;
479 uint32_t pnn; /* our own pnn */
480 uint32_t num_nodes;
481 uint32_t num_connected;
482 unsigned flags;
483 uint32_t capabilities;
484 struct idr_context *idr;
485 int lastid;
486 struct ctdb_node **nodes; /* array of nodes in the cluster - indexed by vnn */
487 struct ctdb_vnn *vnn; /* list of public ip addresses and interfaces */
488 struct ctdb_vnn *single_ip_vnn; /* a structure for the single ip */
489 struct ctdb_iface *ifaces; /* list of local interfaces */
490 char *err_msg;
491 const struct ctdb_methods *methods; /* transport methods */
492 const struct ctdb_upcalls *upcalls; /* transport upcalls */
493 void *private_data; /* private to transport */
494 struct ctdb_db_context *db_list;
495 struct ctdb_message_list_header *message_list_header;
496 struct tdb_context *message_list_indexdb;
497 struct ctdb_daemon_data daemon;
498 struct ctdb_statistics statistics;
499 struct ctdb_statistics statistics_current;
500 #define MAX_STAT_HISTORY 100
501 struct ctdb_statistics statistics_history[MAX_STAT_HISTORY];
502 struct ctdb_vnn_map *vnn_map;
503 uint32_t num_clients;
504 uint32_t recovery_master;
505 struct ctdb_call_state *pending_calls;
506 struct ctdb_client_ip *client_ip_list;
507 bool do_checkpublicip;
508 struct trbt_tree *server_ids;
509 bool do_setsched;
510 void *saved_scheduler_param;
511 const char *event_script_dir;
512 const char *notification_script;
513 const char *default_public_interface;
514 pid_t ctdbd_pid;
515 pid_t recoverd_pid;
516 pid_t syslogd_pid;
517 enum ctdb_runstate runstate;
518 struct ctdb_monitor_state *monitor;
519 struct ctdb_log_state *log;
520 int start_as_disabled;
521 int start_as_stopped;
522 bool valgrinding;
523 uint32_t event_script_timeouts; /* counting how many consecutive times an eventscript has timedout */
524 uint32_t *recd_ping_count;
525 TALLOC_CTX *recd_ctx; /* a context used to track recoverd monitoring events */
526 TALLOC_CTX *release_ips_ctx; /* a context used to automatically drop all IPs if we fail to recover the node */
527
528 TALLOC_CTX *event_script_ctx;
529
530 struct ctdb_event_script_state *current_monitor;
531 struct ctdb_scripts_wire *last_status[CTDB_EVENT_MAX];
532
533 TALLOC_CTX *banning_ctx;
534
535 struct ctdb_vacuum_child_context *vacuumers;
536
537 /* mapping from pid to ctdb_client * */
538 struct ctdb_client_pid_list *client_pids;
539
540 /* used in the recovery daemon to remember the ip allocation */
541 struct trbt_tree *ip_tree;
542
543 /* Used to defer db attach requests while in recovery mode */
544 struct ctdb_deferred_attach_context *deferred_attach;
545
546 /* if we are a child process, do we have a domain socket to send controls on */
547 bool can_send_controls;
548
549 /* list of event script callback functions that are active */
550 struct event_script_callback *script_callbacks;
551
552 struct ctdb_reloadips_handle *reload_ips;
553
554 const char *nodes_file;
555 const char *public_addresses_file;
556 struct trbt_tree *child_processes;
557
558 /* Used for locking record/db/alldb */
559 int lock_num_pending;
560 struct lock_context *lock_current;
561 struct lock_context *lock_pending;
562 };
563
564 struct ctdb_db_context {
565 struct ctdb_db_context *next, *prev;
566 struct ctdb_context *ctdb;
567 uint32_t db_id;
568 uint32_t priority;
569 bool persistent;
570 bool readonly; /* Do we support read-only delegations ? */
571 bool sticky; /* Do we support sticky records ? */
572 const char *db_name;
573 const char *db_path;
574 struct tdb_wrap *ltdb;
575 struct tdb_context *rottdb; /* ReadOnly tracking TDB */
576 struct ctdb_registered_call *calls; /* list of registered calls */
577 uint32_t seqnum;
578 struct timed_event *seqnum_update;
579 struct ctdb_traverse_local_handle *traverse;
580 struct ctdb_vacuum_handle *vacuum_handle;
581 char *unhealthy_reason;
582 int pending_requests;
583 struct revokechild_handle *revokechild_active;
584 struct ctdb_persistent_state *persistent_state;
585 struct trbt_tree *delete_queue;
586 struct trbt_tree *sticky_records;
587 int (*ctdb_ltdb_store_fn)(struct ctdb_db_context *ctdb_db,
588 TDB_DATA key,
589 struct ctdb_ltdb_header *header,
590 TDB_DATA data);
591
592 /* used to track which records we are currently fetching
593 so we can avoid sending duplicate fetch requests
594 */
595 struct trbt_tree *deferred_fetch;
596
597 struct ctdb_db_statistics statistics;
598
599 int lock_num_current;
600 };
601
602
603 #define CTDB_NO_MEMORY(ctdb, p) do { if (!(p)) { \
604 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
605 ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
606 return -1; }} while (0)
607
608 #define CTDB_NO_MEMORY_VOID(ctdb, p) do { if (!(p)) { \
609 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
610 ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
611 return; }} while (0)
612
613 #define CTDB_NO_MEMORY_NULL(ctdb, p) do { if (!(p)) { \
614 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
615 ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
616 return NULL; }} while (0)
617
618 #define CTDB_NO_MEMORY_FATAL(ctdb, p) do { if (!(p)) { \
619 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
620 ctdb_fatal(ctdb, "Out of memory in " __location__ ); \
621 }} while (0)
622
623 /*
624 structure passed in set_call control
625 */
626 struct ctdb_control_set_call {
627 uint32_t db_id;
628 ctdb_fn_t fn;
629 uint32_t id;
630 };
631
632 /*
633 struct for kill_tcp control
634 */
635 struct ctdb_control_killtcp {
636 ctdb_sock_addr src_addr;
637 ctdb_sock_addr dst_addr;
638 };
639
640 /*
641 struct holding a ctdb_sock_addr and an interface name,
642 used to add/remove public addresses
643 */
644 struct ctdb_control_ip_iface {
645 ctdb_sock_addr addr;
646 uint32_t mask;
647 uint32_t len;
648 char iface[1];
649 };
650
651 /*
652 struct holding a ctdb_sock_addr and an interface name,
653 used for send_gratious_arp
654 */
655 struct ctdb_control_gratious_arp {
656 ctdb_sock_addr addr;
657 uint32_t mask;
658 uint32_t len;
659 char iface[1];
660 };
661
662 /*
663 persistent store control - update this record on all other nodes
664 */
665 struct ctdb_control_persistent_store {
666 uint32_t db_id;
667 uint32_t len;
668 uint8_t data[1];
669 };
670
671 /*
672 structure used for CTDB_SRVID_NODE_FLAGS_CHANGED
673 */
674 struct ctdb_node_flag_change {
675 uint32_t pnn;
676 uint32_t new_flags;
677 uint32_t old_flags;
678 };
679
680 /*
681 struct for admin setting a ban
682 */
683 struct ctdb_ban_info {
684 uint32_t pnn;
685 uint32_t ban_time;
686 };
687
688 enum call_state {CTDB_CALL_WAIT, CTDB_CALL_DONE, CTDB_CALL_ERROR};
689
690 #define CTDB_LMASTER_ANY 0xffffffff
691
692 /*
693 state of a in-progress ctdb call
694 */
695 struct ctdb_call_state {
696 struct ctdb_call_state *next, *prev;
697 enum call_state state;
698 uint32_t reqid;
699 struct ctdb_req_call *c;
700 struct ctdb_db_context *ctdb_db;
701 const char *errmsg;
702 struct ctdb_call *call;
703 uint32_t generation;
704 struct {
705 void (*fn)(struct ctdb_call_state *);
706 void *private_data;
707 } async;
708 };
709
710
711 /* used for fetch_lock */
712 struct ctdb_fetch_handle {
713 struct ctdb_db_context *ctdb_db;
714 TDB_DATA key;
715 TDB_DATA *data;
716 struct ctdb_ltdb_header header;
717 };
718
719 /* internal prototypes */
720 void ctdb_set_error(struct ctdb_context *ctdb, const char *fmt, ...) PRINTF_ATTRIBUTE(2,3);
721 void ctdb_fatal(struct ctdb_context *ctdb, const char *msg);
722 void ctdb_die(struct ctdb_context *ctdb, const char *msg);
723 void ctdb_external_trace(void);
724 bool ctdb_same_address(struct ctdb_address *a1, struct ctdb_address *a2);
725 int ctdb_parse_address(struct ctdb_context *ctdb,
726 TALLOC_CTX *mem_ctx, const char *str,
727 struct ctdb_address *address);
728 bool ctdb_same_ip(const ctdb_sock_addr *ip1, const ctdb_sock_addr *ip2);
729 bool ctdb_same_sockaddr(const ctdb_sock_addr *ip1, const ctdb_sock_addr *ip2);
730 uint32_t ctdb_hash(const TDB_DATA *key);
731 uint32_t ctdb_hash_string(const char *str);
732 void ctdb_request_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
733 void ctdb_request_dmaster(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
734 void ctdb_request_message(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
735 void ctdb_reply_dmaster(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
736 void ctdb_reply_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
737 void ctdb_reply_error(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
738
739 uint32_t ctdb_lmaster(struct ctdb_context *ctdb, const TDB_DATA *key);
740 int ctdb_ltdb_fetch(struct ctdb_db_context *ctdb_db,
741 TDB_DATA key, struct ctdb_ltdb_header *header,
742 TALLOC_CTX *mem_ctx, TDB_DATA *data);
743 int ctdb_ltdb_store(struct ctdb_db_context *ctdb_db, TDB_DATA key,
744 struct ctdb_ltdb_header *header, TDB_DATA data);
745 int ctdb_ltdb_delete(struct ctdb_db_context *ctdb_db, TDB_DATA key);
746 int ctdb_ltdb_fetch_with_header(struct ctdb_db_context *ctdb_db,
747 TDB_DATA key, struct ctdb_ltdb_header *header,
748 TALLOC_CTX *mem_ctx, TDB_DATA *data);
749 int32_t ctdb_control_start_persistent_update(struct ctdb_context *ctdb,
750 struct ctdb_req_control *c,
751 TDB_DATA recdata);
752 int32_t ctdb_control_cancel_persistent_update(struct ctdb_context *ctdb,
753 struct ctdb_req_control *c,
754 TDB_DATA recdata);
755 void ctdb_queue_packet(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
756 void ctdb_queue_packet_opcode(struct ctdb_context *ctdb, struct ctdb_req_header *hdr, unsigned opcode);
757 int ctdb_ltdb_lock_requeue(struct ctdb_db_context *ctdb_db,
758 TDB_DATA key, struct ctdb_req_header *hdr,
759 void (*recv_pkt)(void *, struct ctdb_req_header *),
760 void *recv_context, bool ignore_generation);
761 int ctdb_ltdb_lock_fetch_requeue(struct ctdb_db_context *ctdb_db,
762 TDB_DATA key, struct ctdb_ltdb_header *header,
763 struct ctdb_req_header *hdr, TDB_DATA *data,
764 void (*recv_pkt)(void *, struct ctdb_req_header *),
765 void *recv_context, bool ignore_generation);
766 void ctdb_input_pkt(struct ctdb_context *ctdb, struct ctdb_req_header *);
767
768 struct ctdb_call_state *ctdb_call_local_send(struct ctdb_db_context *ctdb_db,
769 struct ctdb_call *call,
770 struct ctdb_ltdb_header *header,
771 TDB_DATA *data);
772
773
774 int ctdb_start_daemon(struct ctdb_context *ctdb, bool do_fork,
775 bool use_syslog);
776 struct ctdb_call_state *ctdbd_call_send(struct ctdb_db_context *ctdb_db, struct ctdb_call *call);
777 int ctdbd_call_recv(struct ctdb_call_state *state, struct ctdb_call *call);
778
779 /*
780 queue a packet for sending
781 */
782 int ctdb_queue_send(struct ctdb_queue *queue, uint8_t *data, uint32_t length);
783
784 /*
785 setup the fd used by the queue
786 */
787 int ctdb_queue_set_fd(struct ctdb_queue *queue, int fd);
788
789 /*
790 setup a packet queue on a socket
791 */
792 struct ctdb_queue *ctdb_queue_setup(struct ctdb_context *ctdb,
793 TALLOC_CTX *mem_ctx, int fd, int alignment,
794
795 ctdb_queue_cb_fn_t callback,
796 void *private_data, const char *fmt, ...)
797 PRINTF_ATTRIBUTE(7,8);
798
799 /*
800 allocate a packet for use in client<->daemon communication
801 */
802 struct ctdb_req_header *_ctdbd_allocate_pkt(struct ctdb_context *ctdb,
803 TALLOC_CTX *mem_ctx,
804 enum ctdb_operation operation,
805 size_t length, size_t slength,
806 const char *type);
807 #define ctdbd_allocate_pkt(ctdb, mem_ctx, operation, length, type) \
808 (type *)_ctdbd_allocate_pkt(ctdb, mem_ctx, operation, length, sizeof(type), #type)
809
810 struct ctdb_req_header *_ctdb_transport_allocate(struct ctdb_context *ctdb,
811 TALLOC_CTX *mem_ctx,
812 enum ctdb_operation operation,
813 size_t length, size_t slength,
814 const char *type);
815 #define ctdb_transport_allocate(ctdb, mem_ctx, operation, length, type) \
816 (type *)_ctdb_transport_allocate(ctdb, mem_ctx, operation, length, sizeof(type), #type)
817
818 int ctdb_queue_length(struct ctdb_queue *queue);
819
820 /*
821 lock a record in the ltdb, given a key
822 */
823 int ctdb_ltdb_lock(struct ctdb_db_context *ctdb_db, TDB_DATA key);
824
825 /*
826 unlock a record in the ltdb, given a key
827 */
828 int ctdb_ltdb_unlock(struct ctdb_db_context *ctdb_db, TDB_DATA key);
829
830
831 /*
832 make a ctdb call to the local daemon - async send. Called from client context.
833
834 This constructs a ctdb_call request and queues it for processing.
835 This call never blocks.
836 */
837 struct ctdb_call_state *ctdb_client_call_send(struct ctdb_db_context *ctdb_db,
838 struct ctdb_call *call);
839
840 /*
841 make a recv call to the local ctdb daemon - called from client context
842
843 This is called when the program wants to wait for a ctdb_call to complete and get the
844 results. This call will block unless the call has already completed.
845 */
846 int ctdb_client_call_recv(struct ctdb_call_state *state, struct ctdb_call *call);
847
848 int ctdb_client_send_message(struct ctdb_context *ctdb, uint32_t vnn,
849 uint64_t srvid, TDB_DATA data);
850
851 /*
852 send a ctdb message
853 */
854 int ctdb_daemon_send_message(struct ctdb_context *ctdb, uint32_t pnn,
855 uint64_t srvid, TDB_DATA data);
856
857
858 struct ctdb_call_state *ctdb_daemon_call_send(struct ctdb_db_context *ctdb_db,
859 struct ctdb_call *call);
860
861 int ctdb_daemon_call_recv(struct ctdb_call_state *state, struct ctdb_call *call);
862
863 struct ctdb_call_state *ctdb_daemon_call_send_remote(struct ctdb_db_context *ctdb_db,
864 struct ctdb_call *call,
865 struct ctdb_ltdb_header *header);
866
867 int ctdb_call_local(struct ctdb_db_context *ctdb_db, struct ctdb_call *call,
868 struct ctdb_ltdb_header *header, TALLOC_CTX *mem_ctx,
869 TDB_DATA *data, bool updatetdb);
870
871 #define ctdb_reqid_find(ctdb, reqid, type) (type *)_ctdb_reqid_find(ctdb, reqid, #type, __location__)
872
873 void ctdb_recv_raw_pkt(void *p, uint8_t *data, uint32_t length);
874
875 int ctdb_socket_connect(struct ctdb_context *ctdb);
876 void ctdb_client_read_cb(uint8_t *data, size_t cnt, void *args);
877
878 #define CTDB_BAD_REQID ((uint32_t)-1)
879 uint32_t ctdb_reqid_new(struct ctdb_context *ctdb, void *state);
880 void *_ctdb_reqid_find(struct ctdb_context *ctdb, uint32_t reqid, const char *type, const char *location);
881 void ctdb_reqid_remove(struct ctdb_context *ctdb, uint32_t reqid);
882
883 void ctdb_request_control(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
884 void ctdb_reply_control(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
885
886 int ctdb_daemon_send_control(struct ctdb_context *ctdb, uint32_t destnode,
887 uint64_t srvid, uint32_t opcode, uint32_t client_id, uint32_t flags,
888 TDB_DATA data,
889 ctdb_control_callback_fn_t callback,
890 void *private_data);
891
892 int32_t ctdb_control_db_attach(struct ctdb_context *ctdb, TDB_DATA indata,
893 TDB_DATA *outdata, uint64_t tdb_flags,
894 bool persistent, uint32_t client_id,
895 struct ctdb_req_control *c,
896 bool *async_reply);
897
898 int ctdb_daemon_set_call(struct ctdb_context *ctdb, uint32_t db_id,
899 ctdb_fn_t fn, int id);
900
901 int ctdb_control(struct ctdb_context *ctdb, uint32_t destnode, uint64_t srvid,
902 uint32_t opcode, uint32_t flags, TDB_DATA data,
903 TALLOC_CTX *mem_ctx, TDB_DATA *outdata, int32_t *status,
904 struct timeval *timeout, char **errormsg);
905 int ctdb_control_recv(struct ctdb_context *ctdb,
906 struct ctdb_client_control_state *state,
907 TALLOC_CTX *mem_ctx,
908 TDB_DATA *outdata, int32_t *status, char **errormsg);
909
910 struct ctdb_client_control_state *
911 ctdb_control_send(struct ctdb_context *ctdb,
912 uint32_t destnode, uint64_t srvid,
913 uint32_t opcode, uint32_t flags, TDB_DATA data,
914 TALLOC_CTX *mem_ctx,
915 struct timeval *timeout,
916 char **errormsg);
917
918
919
920
921 #define CHECK_CONTROL_DATA_SIZE(size) do { \
922 if (indata.dsize != size) { \
923 DEBUG(0,(__location__ " Invalid data size in opcode %u. Got %u expected %u\n", \
924 opcode, (unsigned)indata.dsize, (unsigned)size)); \
925 return -1; \
926 } \
927 } while (0)
928
929 #define CHECK_CONTROL_MIN_DATA_SIZE(size) do { \
930 if (indata.dsize < size) { \
931 DEBUG(0,(__location__ " Invalid data size in opcode %u. Got %u expected >= %u\n", \
932 opcode, (unsigned)indata.dsize, (unsigned)size)); \
933 return -1; \
934 } \
935 } while (0)
936
937 int ctdb_control_getvnnmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
938 int ctdb_control_setvnnmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
939 int ctdb_control_getdbmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
940 int ctdb_control_getnodemapv4(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
941 int ctdb_control_getnodemap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
942 int ctdb_control_writerecord(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
943
944
945 /* structure used for pulldb control */
946 struct ctdb_control_pulldb {
947 uint32_t db_id;
948 uint32_t lmaster;
949 };
950
951 /* structure used for sending lists of records */
952 struct ctdb_marshall_buffer {
953 uint32_t db_id;
954 uint32_t count;
955 uint8_t data[1];
956 };
957
958 /*
959 structure for setting a tunable
960 */
961 struct ctdb_control_set_tunable {
962 uint32_t value;
963 uint32_t length;
964 uint8_t name[1];
965 };
966
967 /*
968 structure for getting a tunable
969 */
970 struct ctdb_control_get_tunable {
971 uint32_t length;
972 uint8_t name[1];
973 };
974
975 /*
976 structure for listing tunables
977 */
978 struct ctdb_control_list_tunable {
979 uint32_t length;
980 /* returns a : separated list of tunable names */
981 uint8_t data[1];
982 };
983
984
985 struct ctdb_node_and_flagsv4 {
986 uint32_t pnn;
987 uint32_t flags;
988 struct sockaddr_in sin;
989 };
990
991 struct ctdb_node_mapv4 {
992 uint32_t num;
993 struct ctdb_node_and_flagsv4 nodes[1];
994 };
995
996 struct ctdb_control_wipe_database {
997 uint32_t db_id;
998 uint32_t transaction_id;
999 };
1000
1001 /*
1002 state of a in-progress ctdb call in client
1003 */
1004 struct ctdb_client_call_state {
1005 enum call_state state;
1006 uint32_t reqid;
1007 struct ctdb_db_context *ctdb_db;
1008 struct ctdb_call *call;
1009 struct {
1010 void (*fn)(struct ctdb_client_call_state *);
1011 void *private_data;
1012 } async;
1013 };
1014
1015
1016 int32_t ctdb_control_traverse_start_ext(struct ctdb_context *ctdb,
1017 TDB_DATA indata,
1018 TDB_DATA *outdata,
1019 uint32_t srcnode,
1020 uint32_t client_id);
1021 int32_t ctdb_control_traverse_start(struct ctdb_context *ctdb, TDB_DATA indata,
1022 TDB_DATA *outdata, uint32_t srcnode, uint32_t client_id);
1023 int32_t ctdb_control_traverse_all(struct ctdb_context *ctdb, TDB_DATA data, TDB_DATA *outdata);
1024 int32_t ctdb_control_traverse_all_ext(struct ctdb_context *ctdb, TDB_DATA data, TDB_DATA *outdata);
1025 int32_t ctdb_control_traverse_data(struct ctdb_context *ctdb, TDB_DATA data, TDB_DATA *outdata);
1026 int32_t ctdb_control_traverse_kill(struct ctdb_context *ctdb, TDB_DATA indata,
1027 TDB_DATA *outdata, uint32_t srcnode);
1028
1029 int ctdb_dispatch_message(struct ctdb_context *ctdb, uint64_t srvid, TDB_DATA data);
1030 bool ctdb_check_message_handler(struct ctdb_context *ctdb, uint64_t srvid);
1031
1032 int daemon_register_message_handler(struct ctdb_context *ctdb, uint32_t client_id, uint64_t srvid);
1033 int ctdb_deregister_message_handler(struct ctdb_context *ctdb, uint64_t srvid, void *private_data);
1034 int daemon_deregister_message_handler(struct ctdb_context *ctdb, uint32_t client_id, uint64_t srvid);
1035 int daemon_check_srvids(struct ctdb_context *ctdb, TDB_DATA indata,
1036 TDB_DATA *outdata);
1037
1038 int32_t ctdb_ltdb_enable_seqnum(struct ctdb_context *ctdb, uint32_t db_id);
1039 int32_t ctdb_ltdb_update_seqnum(struct ctdb_context *ctdb, uint32_t db_id, uint32_t srcnode);
1040
1041 struct ctdb_rec_data *ctdb_marshall_record(TALLOC_CTX *mem_ctx, uint32_t reqid,
1042 TDB_DATA key, struct ctdb_ltdb_header *, TDB_DATA data);
1043
1044 struct ctdb_rec_data *ctdb_marshall_loop_next(struct ctdb_marshall_buffer *m, struct ctdb_rec_data *r,
1045 uint32_t *reqid,
1046 struct ctdb_ltdb_header *header,
1047 TDB_DATA *key, TDB_DATA *data);
1048
1049 int32_t ctdb_control_pull_db(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
1050 int32_t ctdb_control_push_db(struct ctdb_context *ctdb, TDB_DATA indata);
1051
1052 int32_t ctdb_control_set_recmode(struct ctdb_context *ctdb,
1053 struct ctdb_req_control *c,
1054 TDB_DATA indata, bool *async_reply,
1055 const char **errormsg);
1056 void ctdb_request_control_reply(struct ctdb_context *ctdb, struct ctdb_req_control *c,
1057 TDB_DATA *outdata, int32_t status, const char *errormsg);
1058
1059 int32_t ctdb_control_freeze(struct ctdb_context *ctdb, struct ctdb_req_control *c, bool *async_reply);
1060 int32_t ctdb_control_thaw(struct ctdb_context *ctdb, uint32_t priority);
1061
1062 int ctdb_start_recoverd(struct ctdb_context *ctdb);
1063 void ctdb_stop_recoverd(struct ctdb_context *ctdb);
1064
1065 uint32_t ctdb_get_num_active_nodes(struct ctdb_context *ctdb);
1066
1067 void ctdb_disable_monitoring(struct ctdb_context *ctdb);
1068 void ctdb_enable_monitoring(struct ctdb_context *ctdb);
1069 void ctdb_stop_monitoring(struct ctdb_context *ctdb);
1070 void ctdb_start_monitoring(struct ctdb_context *ctdb);
1071 void ctdb_start_tcp_tickle_update(struct ctdb_context *ctdb);
1072 void ctdb_send_keepalive(struct ctdb_context *ctdb, uint32_t destnode);
1073 void ctdb_start_keepalive(struct ctdb_context *ctdb);
1074 void ctdb_stop_keepalive(struct ctdb_context *ctdb);
1075 int32_t ctdb_run_eventscripts(struct ctdb_context *ctdb, struct ctdb_req_control *c, TDB_DATA data, bool *async_reply);
1076
1077
1078 void ctdb_daemon_cancel_controls(struct ctdb_context *ctdb, struct ctdb_node *node);
1079 void ctdb_call_resend_all(struct ctdb_context *ctdb);
1080 void ctdb_node_dead(struct ctdb_node *node);
1081 void ctdb_node_connected(struct ctdb_node *node);
1082 bool ctdb_blocking_freeze(struct ctdb_context *ctdb);
1083 void ctdb_set_scheduler(struct ctdb_context *ctdb);
1084 void ctdb_restore_scheduler(struct ctdb_context *ctdb);
1085
1086 struct tevent_signal *ctdb_init_sigchld(struct ctdb_context *ctdb);
1087 pid_t ctdb_fork(struct ctdb_context *ctdb);
1088 pid_t ctdb_fork_no_free_ringbuffer(struct ctdb_context *ctdb);
1089 void ctdb_set_child_info(TALLOC_CTX *mem_ctx, const char *child_name_fmt, ...);
1090 bool ctdb_is_child_process(void);
1091 int ctdb_kill(struct ctdb_context *ctdb, pid_t pid, int signum);
1092
1093 int32_t ctdb_control_takeover_ip(struct ctdb_context *ctdb,
1094 struct ctdb_req_control *c,
1095 TDB_DATA indata,
1096 bool *async_reply);
1097 int32_t ctdb_control_takeover_ipv4(struct ctdb_context *ctdb,
1098 struct ctdb_req_control *c,
1099 TDB_DATA indata,
1100 bool *async_reply);
1101 int32_t ctdb_control_release_ip(struct ctdb_context *ctdb,
1102 struct ctdb_req_control *c,
1103 TDB_DATA indata,
1104 bool *async_reply);
1105 int32_t ctdb_control_release_ipv4(struct ctdb_context *ctdb,
1106 struct ctdb_req_control *c,
1107 TDB_DATA indata,
1108 bool *async_reply);
1109 int32_t ctdb_control_ipreallocated(struct ctdb_context *ctdb,
1110 struct ctdb_req_control *c,
1111 bool *async_reply);
1112 int32_t ctdb_control_start_recovery(struct ctdb_context *ctdb,
1113 struct ctdb_req_control *c,
1114 bool *async_reply);
1115 int32_t ctdb_control_end_recovery(struct ctdb_context *ctdb,
1116 struct ctdb_req_control *c,
1117 bool *async_reply);
1118
1119 struct ctdb_public_ipv4 {
1120 uint32_t pnn;
1121 struct sockaddr_in sin;
1122 };
1123
1124 int ctdb_ctrl_takeover_ip(struct ctdb_context *ctdb, struct timeval timeout,
1125 uint32_t destnode, struct ctdb_public_ip *ip);
1126 int ctdb_ctrl_release_ip(struct ctdb_context *ctdb, struct timeval timeout,
1127 uint32_t destnode, struct ctdb_public_ip *ip);
1128
1129 struct ctdb_all_public_ipsv4 {
1130 uint32_t num;
1131 struct ctdb_public_ipv4 ips[1];
1132 };
1133
1134 int32_t ctdb_control_get_public_ipsv4(struct ctdb_context *ctdb, struct ctdb_req_control *c, TDB_DATA *outdata);
1135 int32_t ctdb_control_get_public_ips(struct ctdb_context *ctdb, struct ctdb_req_control *c, TDB_DATA *outdata);
1136 int ctdb_ctrl_get_public_ips(struct ctdb_context *ctdb,
1137 struct timeval timeout,
1138 uint32_t destnode,
1139 TALLOC_CTX *mem_ctx,
1140 struct ctdb_all_public_ips **ips);
1141 #define CTDB_PUBLIC_IP_FLAGS_ONLY_AVAILABLE 0x00010000
1142 int ctdb_ctrl_get_public_ips_flags(struct ctdb_context *ctdb,
1143 struct timeval timeout, uint32_t destnode,
1144 TALLOC_CTX *mem_ctx,
1145 uint32_t flags,
1146 struct ctdb_all_public_ips **ips);
1147 int ctdb_ctrl_get_public_ipsv4(struct ctdb_context *ctdb,
1148 struct timeval timeout, uint32_t destnode,
1149 TALLOC_CTX *mem_ctx, struct ctdb_all_public_ips **ips);
1150
1151 struct ctdb_control_iface_info {
1152 char name[CTDB_IFACE_SIZE+2];
1153 uint16_t link_state;
1154 uint32_t references;
1155 };
1156
1157 struct ctdb_control_public_ip_info {
1158 struct ctdb_public_ip ip;
1159 uint32_t active_idx;
1160 uint32_t num;
1161 struct ctdb_control_iface_info ifaces[1];
1162 };
1163
1164 struct ctdb_control_get_ifaces {
1165 uint32_t num;
1166 struct ctdb_control_iface_info ifaces[1];
1167 };
1168
1169 int32_t ctdb_control_get_public_ip_info(struct ctdb_context *ctdb,
1170 struct ctdb_req_control *c,
1171 TDB_DATA indata,
1172 TDB_DATA *outdata);
1173 int32_t ctdb_control_get_ifaces(struct ctdb_context *ctdb,
1174 struct ctdb_req_control *c,
1175 TDB_DATA *outdata);
1176 int32_t ctdb_control_set_iface_link(struct ctdb_context *ctdb,
1177 struct ctdb_req_control *c,
1178 TDB_DATA indata);
1179 int ctdb_ctrl_get_public_ip_info(struct ctdb_context *ctdb,
1180 struct timeval timeout, uint32_t destnode,
1181 TALLOC_CTX *mem_ctx,
1182 const ctdb_sock_addr *addr,
1183 struct ctdb_control_public_ip_info **info);
1184 int ctdb_ctrl_get_ifaces(struct ctdb_context *ctdb,
1185 struct timeval timeout, uint32_t destnode,
1186 TALLOC_CTX *mem_ctx,
1187 struct ctdb_control_get_ifaces **ifaces);
1188 int ctdb_ctrl_set_iface_link(struct ctdb_context *ctdb,
1189 struct timeval timeout, uint32_t destnode,
1190 TALLOC_CTX *mem_ctx,
1191 const struct ctdb_control_iface_info *info);
1192
1193 /* from takeover/system.c */
1194 uint32_t uint16_checksum(uint16_t *data, size_t n);
1195 int ctdb_sys_send_arp(const ctdb_sock_addr *addr, const char *iface);
1196 bool ctdb_sys_have_ip(ctdb_sock_addr *addr);
1197 char *ctdb_sys_find_ifname(ctdb_sock_addr *addr);
1198 bool ctdb_sys_check_iface_exists(const char *iface);
1199 int ctdb_get_peer_pid(const int fd, pid_t *peer_pid);
1200 int ctdb_sys_send_tcp(const ctdb_sock_addr *dest,
1201 const ctdb_sock_addr *src,
1202 uint32_t seq, uint32_t ack, int rst);
1203
1204 /* Details of a byte range lock */
1205 struct ctdb_lock_info {
1206 ino_t inode;
1207 off_t start, end;
1208 bool waiting;
1209 bool read_only;
1210 };
1211
1212 char *ctdb_get_process_name(pid_t pid);
1213 int ctdb_set_process_name(const char *name);
1214 bool ctdb_get_lock_info(pid_t req_pid, struct ctdb_lock_info *lock_info);
1215 bool ctdb_get_blocker_pid(struct ctdb_lock_info *reqlock, pid_t *blocker_pid);
1216
1217 typedef void (*client_async_callback)(struct ctdb_context *ctdb, uint32_t node_pnn, int32_t res, TDB_DATA outdata, void *callback_data);
1218
1219 int ctdb_set_public_addresses(struct ctdb_context *ctdb, bool check_addresses);
1220 int ctdb_set_single_public_ip(struct ctdb_context *ctdb,
1221 const char *iface,
1222 const char *ip);
1223 int ctdb_set_event_script(struct ctdb_context *ctdb, const char *script);
1224 int ctdb_set_notification_script(struct ctdb_context *ctdb, const char *script);
1225 int ctdb_takeover_run(struct ctdb_context *ctdb, struct ctdb_node_map *nodemap,
1226 uint32_t *force_rebalance_nodes,
1227 client_async_callback fail_callback, void *callback_data);
1228
1229 int32_t ctdb_control_tcp_client(struct ctdb_context *ctdb, uint32_t client_id,
1230 TDB_DATA indata);
1231 int32_t ctdb_control_tcp_add(struct ctdb_context *ctdb, TDB_DATA indata, bool tcp_update_needed);
1232 int32_t ctdb_control_tcp_remove(struct ctdb_context *ctdb, TDB_DATA indata);
1233 int32_t ctdb_control_startup(struct ctdb_context *ctdb, uint32_t vnn);
1234 int32_t ctdb_control_kill_tcp(struct ctdb_context *ctdb, TDB_DATA indata);
1235 int32_t ctdb_control_send_gratious_arp(struct ctdb_context *ctdb, TDB_DATA indata);
1236 int32_t ctdb_control_get_tcp_tickle_list(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
1237 int32_t ctdb_control_set_tcp_tickle_list(struct ctdb_context *ctdb, TDB_DATA indata);
1238
1239 void ctdb_takeover_client_destructor_hook(struct ctdb_client *client);
1240 int ctdb_event_script(struct ctdb_context *ctdb, enum ctdb_eventscript_call call);
1241 int ctdb_event_script_args(struct ctdb_context *ctdb, enum ctdb_eventscript_call call,
1242 const char *fmt, ...) PRINTF_ATTRIBUTE(3,4);
1243 int ctdb_event_script_callback(struct ctdb_context *ctdb,
1244 TALLOC_CTX *mem_ctx,
1245 void (*callback)(struct ctdb_context *, int, void *),
1246 void *private_data,
1247 bool from_user,
1248 enum ctdb_eventscript_call call,
1249 const char *fmt, ...) PRINTF_ATTRIBUTE(7,8);
1250 void ctdb_release_all_ips(struct ctdb_context *ctdb);
1251
1252 void set_nonblocking(int fd);
1253 void set_close_on_exec(int fd);
1254
1255 bool ctdb_recovery_lock(struct ctdb_context *ctdb, bool keep);
1256
1257 int ctdb_set_recovery_lock_file(struct ctdb_context *ctdb, const char *file);
1258
1259 int32_t ctdb_control_get_tunable(struct ctdb_context *ctdb, TDB_DATA indata,
1260 TDB_DATA *outdata);
1261 int32_t ctdb_control_set_tunable(struct ctdb_context *ctdb, TDB_DATA indata);
1262 int32_t ctdb_control_list_tunables(struct ctdb_context *ctdb, TDB_DATA *outdata);
1263 int32_t ctdb_control_try_delete_records(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
1264 int32_t ctdb_control_receive_records(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
1265 int32_t ctdb_control_add_public_address(struct ctdb_context *ctdb, TDB_DATA indata);
1266 int32_t ctdb_control_del_public_address(struct ctdb_context *ctdb, TDB_DATA indata);
1267
1268 void ctdb_tunables_set_defaults(struct ctdb_context *ctdb);
1269
1270 int32_t ctdb_control_modflags(struct ctdb_context *ctdb, TDB_DATA indata);
1271
1272 int ctdb_ctrl_get_all_tunables(struct ctdb_context *ctdb,
1273 struct timeval timeout,
1274 uint32_t destnode,
1275 struct ctdb_tunable *tunables);
1276
1277 void ctdb_start_freeze(struct ctdb_context *ctdb, uint32_t priority);
1278
1279 bool parse_ip_mask(const char *s, const char *iface, ctdb_sock_addr *addr, unsigned *mask);
1280 bool parse_ip_port(const char *s, ctdb_sock_addr *addr);
1281 bool parse_ip(const char *s, const char *iface, unsigned port, ctdb_sock_addr *addr);
1282 bool parse_ipv4(const char *s, unsigned port, struct sockaddr_in *sin);
1283
1284
1285 int ctdb_sys_open_capture_socket(const char *iface, void **private_data);
1286 int ctdb_sys_close_capture_socket(void *private_data);
1287 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);
1288
1289 int ctdb_ctrl_killtcp(struct ctdb_context *ctdb,
1290 struct timeval timeout,
1291 uint32_t destnode,
1292 struct ctdb_control_killtcp *killtcp);
1293
1294 int ctdb_ctrl_add_public_ip(struct ctdb_context *ctdb,
1295 struct timeval timeout,
1296 uint32_t destnode,
1297 struct ctdb_control_ip_iface *pub);
1298
1299 int ctdb_ctrl_del_public_ip(struct ctdb_context *ctdb,
1300 struct timeval timeout,
1301 uint32_t destnode,
1302 struct ctdb_control_ip_iface *pub);
1303
1304 int ctdb_ctrl_gratious_arp(struct ctdb_context *ctdb,
1305 struct timeval timeout,
1306 uint32_t destnode,
1307 ctdb_sock_addr *addr,
1308 const char *ifname);
1309
1310 int ctdb_ctrl_get_tcp_tickles(struct ctdb_context *ctdb,
1311 struct timeval timeout,
1312 uint32_t destnode,
1313 TALLOC_CTX *mem_ctx,
1314 ctdb_sock_addr *addr,
1315 struct ctdb_control_tcp_tickle_list **list);
1316
1317
1318 int32_t ctdb_control_register_server_id(struct ctdb_context *ctdb,
1319 uint32_t client_id,
1320 TDB_DATA indata);
1321 int32_t ctdb_control_check_server_id(struct ctdb_context *ctdb,
1322 TDB_DATA indata);
1323 int32_t ctdb_control_unregister_server_id(struct ctdb_context *ctdb,
1324 TDB_DATA indata);
1325 int32_t ctdb_control_get_server_id_list(struct ctdb_context *ctdb,
1326 TDB_DATA *outdata);
1327 int32_t ctdb_control_uptime(struct ctdb_context *ctdb,
1328 TDB_DATA *outdata);
1329
1330 int ctdb_attach_databases(struct ctdb_context *ctdb);
1331
1332 int32_t ctdb_control_persistent_store(struct ctdb_context *ctdb,
1333 struct ctdb_req_control *c,
1334 TDB_DATA recdata, bool *async_reply);
1335 int32_t ctdb_control_update_record(struct ctdb_context *ctdb,
1336 struct ctdb_req_control *c, TDB_DATA recdata,
1337 bool *async_reply);
1338 int32_t ctdb_control_trans2_commit(struct ctdb_context *ctdb,
1339 struct ctdb_req_control *c,
1340 TDB_DATA recdata, bool *async_reply);
1341
1342 int32_t ctdb_control_trans3_commit(struct ctdb_context *ctdb,
1343 struct ctdb_req_control *c,
1344 TDB_DATA recdata, bool *async_reply);
1345
1346 void ctdb_persistent_finish_trans3_commits(struct ctdb_context *ctdb);
1347
1348 int32_t ctdb_control_transaction_start(struct ctdb_context *ctdb, uint32_t id);
1349 int32_t ctdb_control_transaction_commit(struct ctdb_context *ctdb, uint32_t id);
1350 int32_t ctdb_control_transaction_cancel(struct ctdb_context *ctdb);
1351 int32_t ctdb_control_wipe_database(struct ctdb_context *ctdb, TDB_DATA indata);
1352 int32_t ctdb_control_db_set_healthy(struct ctdb_context *ctdb, TDB_DATA indata);
1353 int32_t ctdb_control_db_get_health(struct ctdb_context *ctdb,
1354 TDB_DATA indata,
1355 TDB_DATA *outdata);
1356
1357
1358 int ctdb_vacuum(struct ctdb_context *ctdb, int argc, const char **argv);
1359 int ctdb_repack(struct ctdb_context *ctdb, int argc, const char **argv);
1360
1361 void ctdb_block_signal(int signum);
1362 void ctdb_unblock_signal(int signum);
1363 int32_t ctdb_monitoring_mode(struct ctdb_context *ctdb);
1364 bool ctdb_stopped_monitoring(struct ctdb_context *ctdb);
1365 int ctdb_set_child_logging(struct ctdb_context *ctdb);
1366 void ctdb_lockdown_memory(struct ctdb_context *ctdb);
1367
1368 struct client_async_data {
1369 enum ctdb_controls opcode;
1370 bool dont_log_errors;
1371 uint32_t count;
1372 uint32_t fail_count;
1373 client_async_callback callback;
1374 client_async_callback fail_callback;
1375 void *callback_data;
1376 };
1377 void ctdb_client_async_add(struct client_async_data *data, struct ctdb_client_control_state *state);
1378 int ctdb_client_async_wait(struct ctdb_context *ctdb, struct client_async_data *data);
1379 int ctdb_client_async_control(struct ctdb_context *ctdb,
1380 enum ctdb_controls opcode,
1381 uint32_t *nodes,
1382 uint64_t srvid,
1383 struct timeval timeout,
1384 bool dont_log_errors,
1385 TDB_DATA data,
1386 client_async_callback client_callback,
1387 client_async_callback fail_callback,
1388 void *callback_data);
1389
1390 void ctdb_load_nodes_file(struct ctdb_context *ctdb);
1391
1392 int ctdb_control_reload_nodes_file(struct ctdb_context *ctdb, uint32_t opcode);
1393
1394 int32_t ctdb_dump_memory(struct ctdb_context *ctdb, TDB_DATA *outdata);
1395 int32_t ctdb_control_get_capabilities(struct ctdb_context *ctdb, TDB_DATA *outdata);
1396
1397 int32_t ctdb_control_trans2_finished(struct ctdb_context *ctdb,
1398 struct ctdb_req_control *c);
1399 int32_t ctdb_control_trans2_error(struct ctdb_context *ctdb,
1400 struct ctdb_req_control *c);
1401 int32_t ctdb_control_trans2_active(struct ctdb_context *ctdb,
1402 struct ctdb_req_control *c,
1403 uint32_t db_id);
1404
1405 char *ctdb_addr_to_str(ctdb_sock_addr *addr);
1406 unsigned ctdb_addr_to_port(ctdb_sock_addr *addr);
1407 void ctdb_canonicalize_ip(const ctdb_sock_addr *ip, ctdb_sock_addr *cip);
1408
1409 int32_t ctdb_control_recd_ping(struct ctdb_context *ctdb);
1410 int32_t ctdb_control_set_recmaster(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata);
1411
1412 extern int script_log_level;
1413 extern bool fast_start;
1414 extern const char *ctdbd_pidfile;
1415
1416 int32_t ctdb_control_get_event_script_status(struct ctdb_context *ctdb,
1417 uint32_t call_type,
1418 TDB_DATA *outdata);
1419
1420 int ctdb_log_event_script_output(struct ctdb_context *ctdb, char *str, uint16_t len);
1421 int ctdb_ctrl_report_recd_lock_latency(struct ctdb_context *ctdb, struct timeval timeout, double latency);
1422
1423 int32_t ctdb_control_stop_node(struct ctdb_context *ctdb);
1424 int32_t ctdb_control_continue_node(struct ctdb_context *ctdb);
1425
1426 void ctdb_stop_vacuuming(struct ctdb_context *ctdb);
1427 int ctdb_vacuum_init(struct ctdb_db_context *ctdb_db);
1428
1429 int32_t ctdb_control_enable_script(struct ctdb_context *ctdb, TDB_DATA indata);
1430 int32_t ctdb_control_disable_script(struct ctdb_context *ctdb, TDB_DATA indata);
1431
1432 void ctdb_local_node_got_banned(struct ctdb_context *ctdb);
1433 int32_t ctdb_control_set_ban_state(struct ctdb_context *ctdb, TDB_DATA indata);
1434 int32_t ctdb_control_get_ban_state(struct ctdb_context *ctdb, TDB_DATA *outdata);
1435 int32_t ctdb_control_set_db_priority(struct ctdb_context *ctdb, TDB_DATA indata);
1436 void ctdb_ban_self(struct ctdb_context *ctdb);
1437
1438 int32_t ctdb_control_register_notify(struct ctdb_context *ctdb, uint32_t client_id, TDB_DATA indata);
1439
1440 int32_t ctdb_control_deregister_notify(struct ctdb_context *ctdb, uint32_t client_id, TDB_DATA indata);
1441
1442 int start_syslog_daemon(struct ctdb_context *ctdb);
1443
1444 /* Where to send the log messages back to */
1445 struct ctdb_get_log_addr {
1446 uint32_t pnn;
1447 uint64_t srvid;
1448 int32_t level;
1449 };
1450
1451 extern int log_ringbuf_size;
1452
1453 void ctdb_collect_log(struct ctdb_context *ctdb, struct ctdb_get_log_addr *log_addr);
1454 void ctdb_clear_log(struct ctdb_context *ctdb);
1455 int32_t ctdb_control_get_log(struct ctdb_context *ctdb, TDB_DATA addr);
1456 int32_t ctdb_control_clear_log(struct ctdb_context *ctdb);
1457 void ctdb_log_ringbuffer_free(void);
1458
1459 struct ctdb_log_state *ctdb_fork_with_logging(TALLOC_CTX *mem_ctx,
1460 struct ctdb_context *ctdb,
1461 const char *log_prefix,
1462 void (*logfn)(const char *, uint16_t, void *),
1463 void *logfn_private, pid_t *pid);
1464
1465 int32_t ctdb_control_process_exists(struct ctdb_context *ctdb, pid_t pid);
1466 struct ctdb_client *ctdb_find_client_by_pid(struct ctdb_context *ctdb, pid_t pid);
1467
1468 int32_t ctdb_control_get_db_seqnum(struct ctdb_context *ctdb,
1469 TDB_DATA indata,
1470 TDB_DATA *outdata);
1471
1472 int ctdb_load_persistent_health(struct ctdb_context *ctdb,
1473 struct ctdb_db_context *ctdb_db);
1474 int ctdb_update_persistent_health(struct ctdb_context *ctdb,
1475 struct ctdb_db_context *ctdb_db,
1476 const char *reason,/* NULL means healthy */
1477 int num_healthy_nodes);
1478 int ctdb_recheck_persistent_health(struct ctdb_context *ctdb);
1479
1480 void ctdb_run_notification_script(struct ctdb_context *ctdb, const char *event);
1481
1482 void ctdb_fault_setup(void);
1483
1484 int verify_remote_ip_allocation(struct ctdb_context *ctdb,
1485 struct ctdb_all_public_ips *ips,
1486 uint32_t pnn);
1487 int update_ip_assignment_tree(struct ctdb_context *ctdb,
1488 struct ctdb_public_ip *ip);
1489
1490 int ctdb_init_tevent_logging(struct ctdb_context *ctdb);
1491
1492 int ctdb_statistics_init(struct ctdb_context *ctdb);
1493
1494 int32_t ctdb_control_get_stat_history(struct ctdb_context *ctdb,
1495 struct ctdb_req_control *c,
1496 TDB_DATA *outdata);
1497
1498 int ctdb_deferred_drop_all_ips(struct ctdb_context *ctdb);
1499
1500 int ctdb_process_deferred_attach(struct ctdb_context *ctdb);
1501
1502 /**
1503 * structure to pass to a schedule_for_deletion_control
1504 */
1505 struct ctdb_control_schedule_for_deletion {
1506 uint32_t db_id;
1507 struct ctdb_ltdb_header hdr;
1508 uint32_t keylen;
1509 uint8_t key[1]; /* key[] */
1510 };
1511
1512 int32_t ctdb_control_schedule_for_deletion(struct ctdb_context *ctdb,
1513 TDB_DATA indata);
1514
1515
1516 int32_t ctdb_local_schedule_for_deletion(struct ctdb_db_context *ctdb_db,
1517 const struct ctdb_ltdb_header *hdr,
1518 TDB_DATA key);
1519
1520 void ctdb_local_remove_from_delete_queue(struct ctdb_db_context *ctdb_db,
1521 const struct ctdb_ltdb_header *hdr,
1522 const TDB_DATA key);
1523
1524 struct ctdb_ltdb_header *ctdb_header_from_record_handle(struct ctdb_record_handle *h);
1525
1526 int ctdb_trackingdb_add_pnn(struct ctdb_context *ctdb, TDB_DATA *data, uint32_t pnn);
1527
1528 typedef void (*ctdb_trackingdb_cb)(struct ctdb_context *ctdb, uint32_t pnn, void *private_data);
1529
1530 void ctdb_trackingdb_traverse(struct ctdb_context *ctdb, TDB_DATA data, ctdb_trackingdb_cb cb, void *private_data);
1531
1532 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);
1533
1534 typedef void (*deferred_requeue_fn)(void *call_context, struct ctdb_req_header *hdr);
1535
1536 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);
1537
1538 int ctdb_set_db_readonly(struct ctdb_context *ctdb, struct ctdb_db_context *ctdb_db);
1539
1540 int ctdb_null_func(struct ctdb_call_info *call);
1541
1542 int ctdb_fetch_func(struct ctdb_call_info *call);
1543
1544 int ctdb_fetch_with_header_func(struct ctdb_call_info *call);
1545
1546 int32_t ctdb_control_get_db_statistics(struct ctdb_context *ctdb,
1547 uint32_t db_id,
1548 TDB_DATA *outdata);
1549
1550 int ctdb_set_db_sticky(struct ctdb_context *ctdb, struct ctdb_db_context *ctdb_db);
1551
1552 /*
1553 description for a message to reload all ips via recovery master/daemon
1554 */
1555 struct reloadips_all_reply {
1556 uint32_t pnn;
1557 uint64_t srvid;
1558 };
1559
1560 int32_t ctdb_control_reload_public_ips(struct ctdb_context *ctdb, struct ctdb_req_control *c, bool *async_reply);
1561
1562 int ctdb_start_monitoring_interfaces(struct ctdb_context *ctdb);
1563
1564 /* from server/ctdb_lock.c */
1565 struct lock_request;
1566
1567 int ctdb_lockall_mark_prio(struct ctdb_context *ctdb, uint32_t priority);
1568 int ctdb_lockall_unmark_prio(struct ctdb_context *ctdb, uint32_t priority);
1569
1570 void ctdb_lock_free_request_context(struct lock_request *lock_req);
1571
1572 struct lock_request *ctdb_lock_record(struct ctdb_db_context *ctdb_db,
1573 TDB_DATA key,
1574 bool auto_mark,
1575 void (*callback)(void *, bool),
1576 void *private_data);
1577
1578 struct lock_request *ctdb_lock_db(struct ctdb_db_context *ctdb_db,
1579 bool auto_mark,
1580 void (*callback)(void *, bool),
1581 void *private_data);
1582
1583 struct lock_request *ctdb_lock_alldb_prio(struct ctdb_context *ctdb,
1584 uint32_t priority,
1585 bool auto_mark,
1586 void (*callback)(void *, bool),
1587 void *private_data);
1588
1589 struct lock_request *ctdb_lock_alldb(struct ctdb_context *ctdb,
1590 bool auto_mark,
1591 void (*callback)(void *, bool),
1592 void *private_data);
1593
1594 int mkdir_p(const char *dir, int mode);
1595 void ctdb_mkdir_p_or_die(struct ctdb_context *ctdb, const char *dir, int mode);
1596
1597 #endif
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