?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
ctdb-daemon: Move some inline declarations to header file
[Samba.git] / ctdb / include / ctdb_private.h
blob17c302c1cdbb053fdad3defed50f6731b41b6139
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 use_status_events_for_monitoring;
110 uint32_t allow_unhealthy_db_read;
111 uint32_t stat_history_interval;
112 uint32_t deferred_attach_timeout;
113 uint32_t vacuum_fast_path_count;
114 uint32_t lcp2_public_ip_assignment;
115 uint32_t allow_client_db_attach;
116 uint32_t recover_pdb_by_seqnum;
117 uint32_t deferred_rebalance_on_node_add;
118 uint32_t fetch_collapse;
119 uint32_t hopcount_make_sticky;
120 uint32_t sticky_duration;
121 uint32_t sticky_pindown;
122 uint32_t no_ip_takeover;
123 uint32_t db_record_count_warn;
124 uint32_t db_record_size_warn;
125 uint32_t db_size_warn;
126 uint32_t pulldb_preallocation_size;
127 uint32_t no_ip_host_on_all_disabled;
128 uint32_t samba3_hack;
129 uint32_t mutex_enabled;
130 uint32_t lock_processes_per_db;
131 };
132
133 /*
134 an installed ctdb remote call
135 */
136 struct ctdb_registered_call {
137 struct ctdb_registered_call *next, *prev;
138 uint32_t id;
139 ctdb_fn_t fn;
140 };
141
142 /*
143 this address structure might need to be generalised later for some
144 transports
145 */
146 struct ctdb_address {
147 const char *address;
148 int port;
149 };
150
151 /*
152 check that a pnn is valid
153 */
154 #define ctdb_validate_pnn(ctdb, pnn) (((uint32_t)(pnn)) < (ctdb)->num_nodes)
155
156
157 /* called from the queue code when a packet comes in. Called with data==NULL
158 on error */
159 typedef void (*ctdb_queue_cb_fn_t)(uint8_t *data, size_t length,
160 void *private_data);
161
162 /* used for callbacks in ctdb_control requests */
163 typedef void (*ctdb_control_callback_fn_t)(struct ctdb_context *,
164 int32_t status, TDB_DATA data,
165 const char *errormsg,
166 void *private_data);
167 /*
168 structure describing a connected client in the daemon
169 */
170 struct ctdb_client {
171 struct ctdb_context *ctdb;
172 int fd;
173 struct ctdb_queue *queue;
174 uint32_t client_id;
175 pid_t pid;
176 struct ctdb_tcp_list *tcp_list;
177 uint32_t db_id;
178 uint32_t num_persistent_updates;
179 struct ctdb_client_notify_list *notify;
180 };
181
182 struct ctdb_iface;
183
184 /* state associated with a public ip address */
185 struct ctdb_vnn {
186 struct ctdb_vnn *prev, *next;
187
188 struct ctdb_iface *iface;
189 const char **ifaces;
190 ctdb_sock_addr public_address;
191 uint8_t public_netmask_bits;
192
193 /* the node number that is serving this public address, if any.
194 If no node serves this ip it is set to -1 */
195 int32_t pnn;
196
197 /* List of clients to tickle for this public address */
198 struct ctdb_tcp_array *tcp_array;
199
200 /* whether we need to update the other nodes with changes to our list
201 of connected clients */
202 bool tcp_update_needed;
203
204 /* a context to hang sending gratious arp events off */
205 TALLOC_CTX *takeover_ctx;
206
207 struct ctdb_kill_tcp *killtcp;
208
209 /* Set to true any time an update to this VNN is in flight.
210 This helps to avoid races. */
211 bool update_in_flight;
212
213 /* If CTDB_CONTROL_DEL_PUBLIC_IP is received for this IP
214 * address then this flag is set. It will be deleted in the
215 * release IP callback. */
216 bool delete_pending;
217 };
218
219 /*
220 state associated with one node
221 */
222 struct ctdb_node {
223 struct ctdb_context *ctdb;
224 struct ctdb_address address;
225 const char *name; /* for debug messages */
226 void *private_data; /* private to transport */
227 uint32_t pnn;
228 uint32_t flags;
229
230 /* used by the dead node monitoring */
231 uint32_t dead_count;
232 uint32_t rx_cnt;
233 uint32_t tx_cnt;
234
235 /* used to track node capabilities, is only valid/tracked inside the
236 recovery daemon.
237 */
238 uint32_t capabilities;
239
240 /* a list of controls pending to this node, so we can time them out quickly
241 if the node becomes disconnected */
242 struct daemon_control_state *pending_controls;
243
244 /* used by the recovery daemon when distributing ip addresses
245 across the nodes. it needs to know which public ip's can be handled
246 by each node.
247 */
248 struct ctdb_all_public_ips *known_public_ips;
249 struct ctdb_all_public_ips *available_public_ips;
250 /* used by the recovery dameon to track when a node should be banned */
251 struct ctdb_banning_state *ban_state;
252 };
253
254 /*
255 transport specific methods
256 */
257 struct ctdb_methods {
258 int (*initialise)(struct ctdb_context *); /* initialise transport structures */
259 int (*start)(struct ctdb_context *); /* start the transport */
260 int (*add_node)(struct ctdb_node *); /* setup a new node */
261 int (*connect_node)(struct ctdb_node *); /* connect to node */
262 int (*queue_pkt)(struct ctdb_node *, uint8_t *data, uint32_t length);
263 void *(*allocate_pkt)(TALLOC_CTX *mem_ctx, size_t );
264 void (*shutdown)(struct ctdb_context *); /* shutdown transport */
265 void (*restart)(struct ctdb_node *); /* stop and restart the connection */
266 };
267
268 /*
269 transport calls up to the ctdb layer
270 */
271 struct ctdb_upcalls {
272 /* recv_pkt is called when a packet comes in */
273 void (*recv_pkt)(struct ctdb_context *, uint8_t *data, uint32_t length);
274
275 /* node_dead is called when an attempt to send to a node fails */
276 void (*node_dead)(struct ctdb_node *);
277
278 /* node_connected is called when a connection to a node is established */
279 void (*node_connected)(struct ctdb_node *);
280 };
281
282 /* list of message handlers - needs to be changed to a more efficient data
283 structure so we can find a message handler given a srvid quickly */
284 struct ctdb_message_list_header {
285 struct ctdb_message_list_header *next, *prev;
286 struct ctdb_context *ctdb;
287 uint64_t srvid;
288 struct ctdb_message_list *m;
289 };
290 struct ctdb_message_list {
291 struct ctdb_message_list *next, *prev;
292 struct ctdb_message_list_header *h;
293 ctdb_msg_fn_t message_handler;
294 void *message_private;
295 };
296
297 /* additional data required for the daemon mode */
298 struct ctdb_daemon_data {
299 int sd;
300 char *name;
301 struct ctdb_queue *queue;
302 };
303
304
305 #define CTDB_UPDATE_STAT(ctdb, counter, value) \
306 { \
307 if (value > ctdb->statistics.counter) { \
308 ctdb->statistics.counter = c->hopcount; \
309 } \
310 if (value > ctdb->statistics_current.counter) { \
311 ctdb->statistics_current.counter = c->hopcount; \
312 } \
313 }
314
315 #define CTDB_INCREMENT_STAT(ctdb, counter) \
316 { \
317 ctdb->statistics.counter++; \
318 ctdb->statistics_current.counter++; \
319 }
320
321 #define CTDB_DECREMENT_STAT(ctdb, counter) \
322 { \
323 if (ctdb->statistics.counter > 0) \
324 ctdb->statistics.counter--; \
325 if (ctdb->statistics_current.counter > 0) \
326 ctdb->statistics_current.counter--; \
327 }
328
329 #define CTDB_INCREMENT_DB_STAT(ctdb_db, counter) \
330 { \
331 ctdb_db->statistics.counter++; \
332 }
333
334 #define CTDB_DECREMENT_DB_STAT(ctdb_db, counter) \
335 { \
336 if (ctdb_db->statistics.counter > 0) \
337 ctdb_db->statistics.counter--; \
338 }
339
340 #define CTDB_UPDATE_RECLOCK_LATENCY(ctdb, name, counter, value) \
341 { \
342 if (value > ctdb->statistics.counter.max) \
343 ctdb->statistics.counter.max = value; \
344 if (value > ctdb->statistics_current.counter.max) \
345 ctdb->statistics_current.counter.max = value; \
346 \
347 if (ctdb->statistics.counter.num == 0 || \
348 value < ctdb->statistics.counter.min) \
349 ctdb->statistics.counter.min = value; \
350 if (ctdb->statistics_current.counter.num == 0 || \
351 value < ctdb->statistics_current.counter.min) \
352 ctdb->statistics_current.counter.min = value; \
353 \
354 ctdb->statistics.counter.total += value; \
355 ctdb->statistics_current.counter.total += value; \
356 \
357 ctdb->statistics.counter.num++; \
358 ctdb->statistics_current.counter.num++; \
359 \
360 if (ctdb->tunable.reclock_latency_ms != 0) { \
361 if (value*1000 > ctdb->tunable.reclock_latency_ms) { \
362 DEBUG(DEBUG_ERR, \
363 ("High RECLOCK latency %fs for operation %s\n", \
364 value, name)); \
365 } \
366 } \
367 }
368
369 #define CTDB_UPDATE_DB_LATENCY(ctdb_db, operation, counter, value) \
370 { \
371 if (value > ctdb_db->statistics.counter.max) \
372 ctdb_db->statistics.counter.max = value; \
373 if (ctdb_db->statistics.counter.num == 0 || \
374 value < ctdb_db->statistics.counter.min) \
375 ctdb_db->statistics.counter.min = value; \
376 \
377 ctdb_db->statistics.counter.total += value; \
378 ctdb_db->statistics.counter.num++; \
379 \
380 if (ctdb_db->ctdb->tunable.log_latency_ms != 0) { \
381 if (value*1000 > ctdb_db->ctdb->tunable.log_latency_ms) { \
382 DEBUG(DEBUG_ERR, \
383 ("High latency %.6fs for operation %s on database %s\n",\
384 value, operation, ctdb_db->db_name)); \
385 } \
386 } \
387 }
388
389 #define CTDB_UPDATE_LATENCY(ctdb, db, operation, counter, t) \
390 { \
391 double l = timeval_elapsed(&t); \
392 \
393 if (l > ctdb->statistics.counter.max) \
394 ctdb->statistics.counter.max = l; \
395 if (l > ctdb->statistics_current.counter.max) \
396 ctdb->statistics_current.counter.max = l; \
397 \
398 if (ctdb->statistics.counter.num == 0 || \
399 l < ctdb->statistics.counter.min) \
400 ctdb->statistics.counter.min = l; \
401 if (ctdb->statistics_current.counter.num == 0 || \
402 l < ctdb->statistics_current.counter.min) \
403 ctdb->statistics_current.counter.min = l; \
404 \
405 ctdb->statistics.counter.total += l; \
406 ctdb->statistics_current.counter.total += l; \
407 \
408 ctdb->statistics.counter.num++; \
409 ctdb->statistics_current.counter.num++; \
410 \
411 if (ctdb->tunable.log_latency_ms != 0) { \
412 if (l*1000 > ctdb->tunable.log_latency_ms) { \
413 DEBUG(DEBUG_WARNING, \
414 ("High latency %.6fs for operation %s on database %s\n",\
415 l, operation, db->db_name)); \
416 } \
417 } \
418 }
419
420
421
422 /* a structure that contains the elements required for the write record
423 control
424 */
425 struct ctdb_write_record {
426 uint32_t dbid;
427 uint32_t keylen;
428 uint32_t datalen;
429 unsigned char blob[1];
430 };
431
432 enum ctdb_freeze_mode {CTDB_FREEZE_NONE, CTDB_FREEZE_PENDING, CTDB_FREEZE_FROZEN};
433
434 enum ctdb_runstate {
435 CTDB_RUNSTATE_UNKNOWN,
436 CTDB_RUNSTATE_INIT,
437 CTDB_RUNSTATE_SETUP,
438 CTDB_RUNSTATE_FIRST_RECOVERY,
439 CTDB_RUNSTATE_STARTUP,
440 CTDB_RUNSTATE_RUNNING,
441 CTDB_RUNSTATE_SHUTDOWN,
442 };
443
444 const char *runstate_to_string(enum ctdb_runstate runstate);
445 enum ctdb_runstate runstate_from_string(const char *label);
446 void ctdb_set_runstate(struct ctdb_context *ctdb, enum ctdb_runstate runstate);
447
448 void ctdb_shutdown_sequence(struct ctdb_context *ctdb, int exit_code);
449
450 #define CTDB_MONITORING_ACTIVE 0
451 #define CTDB_MONITORING_DISABLED 1
452
453 #define NUM_DB_PRIORITIES 3
454 /* main state of the ctdb daemon */
455 struct ctdb_context {
456 struct tevent_context *ev;
457 struct timeval ctdbd_start_time;
458 struct timeval last_recovery_started;
459 struct timeval last_recovery_finished;
460 uint32_t recovery_mode;
461 TALLOC_CTX *tickle_update_context;
462 TALLOC_CTX *keepalive_ctx;
463 TALLOC_CTX *check_public_ifaces_ctx;
464 struct ctdb_tunable tunable;
465 enum ctdb_freeze_mode freeze_mode[NUM_DB_PRIORITIES+1];
466 struct ctdb_freeze_handle *freeze_handles[NUM_DB_PRIORITIES+1];
467 bool freeze_transaction_started;
468 uint32_t freeze_transaction_id;
469 struct ctdb_address address;
470 const char *name;
471 const char *db_directory;
472 const char *db_directory_persistent;
473 const char *db_directory_state;
474 struct tdb_wrap *db_persistent_health;
475 uint32_t db_persistent_startup_generation;
476 uint64_t db_persistent_check_errors;
477 uint64_t max_persistent_check_errors;
478 const char *transport;
479 char *recovery_lock_file;
480 int recovery_lock_fd;
481 uint32_t pnn; /* our own pnn */
482 uint32_t num_nodes;
483 uint32_t num_connected;
484 unsigned flags;
485 uint32_t capabilities;
486 struct idr_context *idr;
487 int lastid;
488 struct ctdb_node **nodes; /* array of nodes in the cluster - indexed by vnn */
489 struct ctdb_vnn *vnn; /* list of public ip addresses and interfaces */
490 struct ctdb_vnn *single_ip_vnn; /* a structure for the single ip */
491 struct ctdb_iface *ifaces; /* list of local interfaces */
492 char *err_msg;
493 const struct ctdb_methods *methods; /* transport methods */
494 const struct ctdb_upcalls *upcalls; /* transport upcalls */
495 void *private_data; /* private to transport */
496 struct ctdb_db_context *db_list;
497 struct ctdb_message_list_header *message_list_header;
498 struct tdb_context *message_list_indexdb;
499 struct ctdb_daemon_data daemon;
500 struct ctdb_statistics statistics;
501 struct ctdb_statistics statistics_current;
502 #define MAX_STAT_HISTORY 100
503 struct ctdb_statistics statistics_history[MAX_STAT_HISTORY];
504 struct ctdb_vnn_map *vnn_map;
505 uint32_t num_clients;
506 uint32_t recovery_master;
507 struct ctdb_call_state *pending_calls;
508 struct ctdb_client_ip *client_ip_list;
509 bool do_checkpublicip;
510 struct trbt_tree *server_ids;
511 bool do_setsched;
512 const char *event_script_dir;
513 const char *notification_script;
514 const char *default_public_interface;
515 pid_t ctdbd_pid;
516 pid_t recoverd_pid;
517 pid_t syslogd_pid;
518 enum ctdb_runstate runstate;
519 struct ctdb_monitor_state *monitor;
520 struct ctdb_log_state *log;
521 int start_as_disabled;
522 int start_as_stopped;
523 bool valgrinding;
524 uint32_t event_script_timeouts; /* counting how many consecutive times an eventscript has timedout */
525 uint32_t *recd_ping_count;
526 TALLOC_CTX *recd_ctx; /* a context used to track recoverd monitoring events */
527 TALLOC_CTX *release_ips_ctx; /* a context used to automatically drop all IPs if we fail to recover the node */
528
529 TALLOC_CTX *event_script_ctx;
530 int active_events;
531
532 struct ctdb_event_script_state *current_monitor;
533 struct ctdb_scripts_wire *last_status[CTDB_EVENT_MAX];
534
535 TALLOC_CTX *banning_ctx;
536
537 struct ctdb_vacuum_child_context *vacuumers;
538
539 /* mapping from pid to ctdb_client * */
540 struct ctdb_client_pid_list *client_pids;
541
542 /* used in the recovery daemon to remember the ip allocation */
543 struct trbt_tree *ip_tree;
544
545 /* Used to defer db attach requests while in recovery mode */
546 struct ctdb_deferred_attach_context *deferred_attach;
547
548 /* if we are a child process, do we have a domain socket to send controls on */
549 bool can_send_controls;
550
551 /* list of event script callback functions that are active */
552 struct event_script_callback *script_callbacks;
553
554 struct ctdb_reloadips_handle *reload_ips;
555
556 const char *nodes_file;
557 const char *public_addresses_file;
558 struct trbt_tree *child_processes;
559
560 /* Used for locking record/db/alldb */
561 struct lock_context *lock_current;
562 struct lock_context *lock_pending;
563 };
564
565 struct ctdb_db_context {
566 struct ctdb_db_context *next, *prev;
567 struct ctdb_context *ctdb;
568 uint32_t db_id;
569 uint32_t priority;
570 bool persistent;
571 bool readonly; /* Do we support read-only delegations ? */
572 bool sticky; /* Do we support sticky records ? */
573 const char *db_name;
574 const char *db_path;
575 struct tdb_wrap *ltdb;
576 struct tdb_context *rottdb; /* ReadOnly tracking TDB */
577 struct ctdb_registered_call *calls; /* list of registered calls */
578 uint32_t seqnum;
579 struct timed_event *seqnum_update;
580 struct ctdb_traverse_local_handle *traverse;
581 struct ctdb_vacuum_handle *vacuum_handle;
582 char *unhealthy_reason;
583 int pending_requests;
584 struct revokechild_handle *revokechild_active;
585 struct ctdb_persistent_state *persistent_state;
586 struct trbt_tree *delete_queue;
587 struct trbt_tree *sticky_records;
588 int (*ctdb_ltdb_store_fn)(struct ctdb_db_context *ctdb_db,
589 TDB_DATA key,
590 struct ctdb_ltdb_header *header,
591 TDB_DATA data);
592
593 /* used to track which records we are currently fetching
594 so we can avoid sending duplicate fetch requests
595 */
596 struct trbt_tree *deferred_fetch;
597 struct trbt_tree *defer_dmaster;
598
599 struct ctdb_db_statistics statistics;
600
601 struct lock_context *lock_current;
602 struct lock_context *lock_pending;
603 int lock_num_current;
604 };
605
606
607 #define CTDB_NO_MEMORY(ctdb, p) do { if (!(p)) { \
608 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
609 ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
610 return -1; }} while (0)
611
612 #define CTDB_NO_MEMORY_VOID(ctdb, p) do { if (!(p)) { \
613 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
614 ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
615 return; }} while (0)
616
617 #define CTDB_NO_MEMORY_NULL(ctdb, p) do { if (!(p)) { \
618 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
619 ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
620 return NULL; }} while (0)
621
622 #define CTDB_NO_MEMORY_FATAL(ctdb, p) do { if (!(p)) { \
623 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
624 ctdb_fatal(ctdb, "Out of memory in " __location__ ); \
625 }} while (0)
626
627 /*
628 structure passed in set_call control
629 */
630 struct ctdb_control_set_call {
631 uint32_t db_id;
632 ctdb_fn_t fn;
633 uint32_t id;
634 };
635
636 /*
637 struct for kill_tcp control
638 */
639 struct ctdb_control_killtcp {
640 ctdb_sock_addr src_addr;
641 ctdb_sock_addr dst_addr;
642 };
643
644 /*
645 struct holding a ctdb_sock_addr and an interface name,
646 used to add/remove public addresses
647 */
648 struct ctdb_control_ip_iface {
649 ctdb_sock_addr addr;
650 uint32_t mask;
651 uint32_t len;
652 char iface[1];
653 };
654
655 /*
656 struct holding a ctdb_sock_addr and an interface name,
657 used for send_gratious_arp
658 */
659 struct ctdb_control_gratious_arp {
660 ctdb_sock_addr addr;
661 uint32_t mask;
662 uint32_t len;
663 char iface[1];
664 };
665
666 /*
667 persistent store control - update this record on all other nodes
668 */
669 struct ctdb_control_persistent_store {
670 uint32_t db_id;
671 uint32_t len;
672 uint8_t data[1];
673 };
674
675 /*
676 structure used for CTDB_SRVID_NODE_FLAGS_CHANGED
677 */
678 struct ctdb_node_flag_change {
679 uint32_t pnn;
680 uint32_t new_flags;
681 uint32_t old_flags;
682 };
683
684 /*
685 struct for admin setting a ban
686 */
687 struct ctdb_ban_info {
688 uint32_t pnn;
689 uint32_t ban_time;
690 };
691
692 enum call_state {CTDB_CALL_WAIT, CTDB_CALL_DONE, CTDB_CALL_ERROR};
693
694 #define CTDB_LMASTER_ANY 0xffffffff
695
696 /*
697 state of a in-progress ctdb call
698 */
699 struct ctdb_call_state {
700 struct ctdb_call_state *next, *prev;
701 enum call_state state;
702 uint32_t reqid;
703 struct ctdb_req_call *c;
704 struct ctdb_db_context *ctdb_db;
705 const char *errmsg;
706 struct ctdb_call *call;
707 uint32_t generation;
708 struct {
709 void (*fn)(struct ctdb_call_state *);
710 void *private_data;
711 } async;
712 };
713
714
715 /* used for fetch_lock */
716 struct ctdb_fetch_handle {
717 struct ctdb_db_context *ctdb_db;
718 TDB_DATA key;
719 TDB_DATA *data;
720 struct ctdb_ltdb_header header;
721 };
722
723 /* internal prototypes */
724 void ctdb_set_error(struct ctdb_context *ctdb, const char *fmt, ...) PRINTF_ATTRIBUTE(2,3);
725 void ctdb_fatal(struct ctdb_context *ctdb, const char *msg);
726 void ctdb_die(struct ctdb_context *ctdb, const char *msg);
727 void ctdb_external_trace(void);
728 bool ctdb_same_address(struct ctdb_address *a1, struct ctdb_address *a2);
729 int ctdb_parse_address(struct ctdb_context *ctdb,
730 TALLOC_CTX *mem_ctx, const char *str,
731 struct ctdb_address *address);
732 bool ctdb_same_ip(const ctdb_sock_addr *ip1, const ctdb_sock_addr *ip2);
733 bool ctdb_same_sockaddr(const ctdb_sock_addr *ip1, const ctdb_sock_addr *ip2);
734 uint32_t ctdb_hash(const TDB_DATA *key);
735 uint32_t *ctdb_key_to_idkey(TALLOC_CTX *mem_ctx, TDB_DATA key);
736
737 void ctdb_request_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
738 void ctdb_request_dmaster(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
739 void ctdb_request_message(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
740 void ctdb_reply_dmaster(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
741 void ctdb_reply_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
742 void ctdb_reply_error(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
743
744 uint32_t ctdb_lmaster(struct ctdb_context *ctdb, const TDB_DATA *key);
745 int ctdb_ltdb_fetch(struct ctdb_db_context *ctdb_db,
746 TDB_DATA key, struct ctdb_ltdb_header *header,
747 TALLOC_CTX *mem_ctx, TDB_DATA *data);
748 int ctdb_ltdb_store(struct ctdb_db_context *ctdb_db, TDB_DATA key,
749 struct ctdb_ltdb_header *header, TDB_DATA data);
750 int ctdb_ltdb_delete(struct ctdb_db_context *ctdb_db, TDB_DATA key);
751 int ctdb_ltdb_fetch_with_header(struct ctdb_db_context *ctdb_db,
752 TDB_DATA key, struct ctdb_ltdb_header *header,
753 TALLOC_CTX *mem_ctx, TDB_DATA *data);
754 int32_t ctdb_control_start_persistent_update(struct ctdb_context *ctdb,
755 struct ctdb_req_control *c,
756 TDB_DATA recdata);
757 int32_t ctdb_control_cancel_persistent_update(struct ctdb_context *ctdb,
758 struct ctdb_req_control *c,
759 TDB_DATA recdata);
760 void ctdb_queue_packet(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
761 void ctdb_queue_packet_opcode(struct ctdb_context *ctdb, struct ctdb_req_header *hdr, unsigned opcode);
762 int ctdb_ltdb_lock_requeue(struct ctdb_db_context *ctdb_db,
763 TDB_DATA key, struct ctdb_req_header *hdr,
764 void (*recv_pkt)(void *, struct ctdb_req_header *),
765 void *recv_context, bool ignore_generation);
766 int ctdb_ltdb_lock_fetch_requeue(struct ctdb_db_context *ctdb_db,
767 TDB_DATA key, struct ctdb_ltdb_header *header,
768 struct ctdb_req_header *hdr, TDB_DATA *data,
769 void (*recv_pkt)(void *, struct ctdb_req_header *),
770 void *recv_context, bool ignore_generation);
771 void ctdb_input_pkt(struct ctdb_context *ctdb, struct ctdb_req_header *);
772
773 struct ctdb_call_state *ctdb_call_local_send(struct ctdb_db_context *ctdb_db,
774 struct ctdb_call *call,
775 struct ctdb_ltdb_header *header,
776 TDB_DATA *data);
777
778
779 int ctdb_start_daemon(struct ctdb_context *ctdb, bool do_fork,
780 bool use_syslog);
781 struct ctdb_call_state *ctdbd_call_send(struct ctdb_db_context *ctdb_db, struct ctdb_call *call);
782 int ctdbd_call_recv(struct ctdb_call_state *state, struct ctdb_call *call);
783
784 /*
785 queue a packet for sending
786 */
787 int ctdb_queue_send(struct ctdb_queue *queue, uint8_t *data, uint32_t length);
788
789 /*
790 setup the fd used by the queue
791 */
792 int ctdb_queue_set_fd(struct ctdb_queue *queue, int fd);
793
794 /*
795 setup a packet queue on a socket
796 */
797 struct ctdb_queue *ctdb_queue_setup(struct ctdb_context *ctdb,
798 TALLOC_CTX *mem_ctx, int fd, int alignment,
799
800 ctdb_queue_cb_fn_t callback,
801 void *private_data, const char *fmt, ...)
802 PRINTF_ATTRIBUTE(7,8);
803
804 /*
805 allocate a packet for use in client<->daemon communication
806 */
807 struct ctdb_req_header *_ctdbd_allocate_pkt(struct ctdb_context *ctdb,
808 TALLOC_CTX *mem_ctx,
809 enum ctdb_operation operation,
810 size_t length, size_t slength,
811 const char *type);
812 #define ctdbd_allocate_pkt(ctdb, mem_ctx, operation, length, type) \
813 (type *)_ctdbd_allocate_pkt(ctdb, mem_ctx, operation, length, sizeof(type), #type)
814
815 struct ctdb_req_header *_ctdb_transport_allocate(struct ctdb_context *ctdb,
816 TALLOC_CTX *mem_ctx,
817 enum ctdb_operation operation,
818 size_t length, size_t slength,
819 const char *type);
820 #define ctdb_transport_allocate(ctdb, mem_ctx, operation, length, type) \
821 (type *)_ctdb_transport_allocate(ctdb, mem_ctx, operation, length, sizeof(type), #type)
822
823 int ctdb_queue_length(struct ctdb_queue *queue);
824
825 /*
826 lock a record in the ltdb, given a key
827 */
828 int ctdb_ltdb_lock(struct ctdb_db_context *ctdb_db, TDB_DATA key);
829
830 /*
831 unlock a record in the ltdb, given a key
832 */
833 int ctdb_ltdb_unlock(struct ctdb_db_context *ctdb_db, TDB_DATA key);
834
835
836 /*
837 make a ctdb call to the local daemon - async send. Called from client context.
838
839 This constructs a ctdb_call request and queues it for processing.
840 This call never blocks.
841 */
842 struct ctdb_call_state *ctdb_client_call_send(struct ctdb_db_context *ctdb_db,
843 struct ctdb_call *call);
844
845 /*
846 make a recv call to the local ctdb daemon - called from client context
847
848 This is called when the program wants to wait for a ctdb_call to complete and get the
849 results. This call will block unless the call has already completed.
850 */
851 int ctdb_client_call_recv(struct ctdb_call_state *state, struct ctdb_call *call);
852
853 int ctdb_client_send_message(struct ctdb_context *ctdb, uint32_t vnn,
854 uint64_t srvid, TDB_DATA data);
855
856 /*
857 send a ctdb message
858 */
859 int ctdb_daemon_send_message(struct ctdb_context *ctdb, uint32_t pnn,
860 uint64_t srvid, TDB_DATA data);
861
862
863 struct ctdb_call_state *ctdb_daemon_call_send(struct ctdb_db_context *ctdb_db,
864 struct ctdb_call *call);
865
866 int ctdb_daemon_call_recv(struct ctdb_call_state *state, struct ctdb_call *call);
867
868 struct ctdb_call_state *ctdb_daemon_call_send_remote(struct ctdb_db_context *ctdb_db,
869 struct ctdb_call *call,
870 struct ctdb_ltdb_header *header);
871
872 int ctdb_call_local(struct ctdb_db_context *ctdb_db, struct ctdb_call *call,
873 struct ctdb_ltdb_header *header, TALLOC_CTX *mem_ctx,
874 TDB_DATA *data, bool updatetdb);
875
876 #define ctdb_reqid_find(ctdb, reqid, type) (type *)_ctdb_reqid_find(ctdb, reqid, #type, __location__)
877
878 void ctdb_recv_raw_pkt(void *p, uint8_t *data, uint32_t length);
879
880 int ctdb_socket_connect(struct ctdb_context *ctdb);
881 void ctdb_client_read_cb(uint8_t *data, size_t cnt, void *args);
882
883 #define CTDB_BAD_REQID ((uint32_t)-1)
884 uint32_t ctdb_reqid_new(struct ctdb_context *ctdb, void *state);
885 void *_ctdb_reqid_find(struct ctdb_context *ctdb, uint32_t reqid, const char *type, const char *location);
886 void ctdb_reqid_remove(struct ctdb_context *ctdb, uint32_t reqid);
887
888 void ctdb_request_control(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
889 void ctdb_reply_control(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
890
891 int ctdb_daemon_send_control(struct ctdb_context *ctdb, uint32_t destnode,
892 uint64_t srvid, uint32_t opcode, uint32_t client_id, uint32_t flags,
893 TDB_DATA data,
894 ctdb_control_callback_fn_t callback,
895 void *private_data);
896
897 int32_t ctdb_control_db_attach(struct ctdb_context *ctdb, TDB_DATA indata,
898 TDB_DATA *outdata, uint64_t tdb_flags,
899 bool persistent, uint32_t client_id,
900 struct ctdb_req_control *c,
901 bool *async_reply);
902 int32_t ctdb_control_db_detach(struct ctdb_context *ctdb, TDB_DATA indata,
903 uint32_t client_id);
904
905 int ctdb_daemon_set_call(struct ctdb_context *ctdb, uint32_t db_id,
906 ctdb_fn_t fn, int id);
907
908 int ctdb_control(struct ctdb_context *ctdb, uint32_t destnode, uint64_t srvid,
909 uint32_t opcode, uint32_t flags, TDB_DATA data,
910 TALLOC_CTX *mem_ctx, TDB_DATA *outdata, int32_t *status,
911 struct timeval *timeout, char **errormsg);
912 int ctdb_control_recv(struct ctdb_context *ctdb,
913 struct ctdb_client_control_state *state,
914 TALLOC_CTX *mem_ctx,
915 TDB_DATA *outdata, int32_t *status, char **errormsg);
916
917 struct ctdb_client_control_state *
918 ctdb_control_send(struct ctdb_context *ctdb,
919 uint32_t destnode, uint64_t srvid,
920 uint32_t opcode, uint32_t flags, TDB_DATA data,
921 TALLOC_CTX *mem_ctx,
922 struct timeval *timeout,
923 char **errormsg);
924
925
926
927
928 #define CHECK_CONTROL_DATA_SIZE(size) do { \
929 if (indata.dsize != size) { \
930 DEBUG(0,(__location__ " Invalid data size in opcode %u. Got %u expected %u\n", \
931 opcode, (unsigned)indata.dsize, (unsigned)size)); \
932 return -1; \
933 } \
934 } while (0)
935
936 #define CHECK_CONTROL_MIN_DATA_SIZE(size) do { \
937 if (indata.dsize < size) { \
938 DEBUG(0,(__location__ " Invalid data size in opcode %u. Got %u expected >= %u\n", \
939 opcode, (unsigned)indata.dsize, (unsigned)size)); \
940 return -1; \
941 } \
942 } while (0)
943
944 int ctdb_control_getvnnmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
945 int ctdb_control_setvnnmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
946 int ctdb_control_getdbmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
947 int ctdb_control_getnodemapv4(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
948 int ctdb_control_getnodemap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
949 int ctdb_control_writerecord(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
950
951
952 /* structure used for pulldb control */
953 struct ctdb_control_pulldb {
954 uint32_t db_id;
955 uint32_t lmaster;
956 };
957
958 /* structure used for sending lists of records */
959 struct ctdb_marshall_buffer {
960 uint32_t db_id;
961 uint32_t count;
962 uint8_t data[1];
963 };
964
965 /*
966 structure for setting a tunable
967 */
968 struct ctdb_control_set_tunable {
969 uint32_t value;
970 uint32_t length;
971 uint8_t name[1];
972 };
973
974 /*
975 structure for getting a tunable
976 */
977 struct ctdb_control_get_tunable {
978 uint32_t length;
979 uint8_t name[1];
980 };
981
982 /*
983 structure for listing tunables
984 */
985 struct ctdb_control_list_tunable {
986 uint32_t length;
987 /* returns a : separated list of tunable names */
988 uint8_t data[1];
989 };
990
991
992 struct ctdb_node_and_flagsv4 {
993 uint32_t pnn;
994 uint32_t flags;
995 struct sockaddr_in sin;
996 };
997
998 struct ctdb_node_mapv4 {
999 uint32_t num;
1000 struct ctdb_node_and_flagsv4 nodes[1];
1001 };
1002
1003 struct ctdb_control_wipe_database {
1004 uint32_t db_id;
1005 uint32_t transaction_id;
1006 };
1007
1008 /*
1009 state of a in-progress ctdb call in client
1010 */
1011 struct ctdb_client_call_state {
1012 enum call_state state;
1013 uint32_t reqid;
1014 struct ctdb_db_context *ctdb_db;
1015 struct ctdb_call *call;
1016 struct {
1017 void (*fn)(struct ctdb_client_call_state *);
1018 void *private_data;
1019 } async;
1020 };
1021
1022
1023 int32_t ctdb_control_traverse_start_ext(struct ctdb_context *ctdb,
1024 TDB_DATA indata,
1025 TDB_DATA *outdata,
1026 uint32_t srcnode,
1027 uint32_t client_id);
1028 int32_t ctdb_control_traverse_start(struct ctdb_context *ctdb, TDB_DATA indata,
1029 TDB_DATA *outdata, uint32_t srcnode, uint32_t client_id);
1030 int32_t ctdb_control_traverse_all(struct ctdb_context *ctdb, TDB_DATA data, TDB_DATA *outdata);
1031 int32_t ctdb_control_traverse_all_ext(struct ctdb_context *ctdb, TDB_DATA data, TDB_DATA *outdata);
1032 int32_t ctdb_control_traverse_data(struct ctdb_context *ctdb, TDB_DATA data, TDB_DATA *outdata);
1033 int32_t ctdb_control_traverse_kill(struct ctdb_context *ctdb, TDB_DATA indata,
1034 TDB_DATA *outdata, uint32_t srcnode);
1035
1036 int ctdb_dispatch_message(struct ctdb_context *ctdb, uint64_t srvid, TDB_DATA data);
1037 bool ctdb_check_message_handler(struct ctdb_context *ctdb, uint64_t srvid);
1038
1039 int daemon_register_message_handler(struct ctdb_context *ctdb, uint32_t client_id, uint64_t srvid);
1040 int ctdb_deregister_message_handler(struct ctdb_context *ctdb, uint64_t srvid, void *private_data);
1041 int daemon_deregister_message_handler(struct ctdb_context *ctdb, uint32_t client_id, uint64_t srvid);
1042 int daemon_check_srvids(struct ctdb_context *ctdb, TDB_DATA indata,
1043 TDB_DATA *outdata);
1044
1045 int32_t ctdb_ltdb_enable_seqnum(struct ctdb_context *ctdb, uint32_t db_id);
1046 int32_t ctdb_ltdb_update_seqnum(struct ctdb_context *ctdb, uint32_t db_id, uint32_t srcnode);
1047
1048 struct ctdb_rec_data *ctdb_marshall_record(TALLOC_CTX *mem_ctx, uint32_t reqid,
1049 TDB_DATA key, struct ctdb_ltdb_header *, TDB_DATA data);
1050
1051 struct ctdb_rec_data *ctdb_marshall_loop_next(struct ctdb_marshall_buffer *m, struct ctdb_rec_data *r,
1052 uint32_t *reqid,
1053 struct ctdb_ltdb_header *header,
1054 TDB_DATA *key, TDB_DATA *data);
1055
1056 int32_t ctdb_control_pull_db(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
1057 int32_t ctdb_control_push_db(struct ctdb_context *ctdb, TDB_DATA indata);
1058
1059 int32_t ctdb_control_set_recmode(struct ctdb_context *ctdb,
1060 struct ctdb_req_control *c,
1061 TDB_DATA indata, bool *async_reply,
1062 const char **errormsg);
1063 void ctdb_request_control_reply(struct ctdb_context *ctdb, struct ctdb_req_control *c,
1064 TDB_DATA *outdata, int32_t status, const char *errormsg);
1065
1066 int32_t ctdb_control_freeze(struct ctdb_context *ctdb, struct ctdb_req_control *c, bool *async_reply);
1067 int32_t ctdb_control_thaw(struct ctdb_context *ctdb, uint32_t priority,
1068 bool check_recmode);
1069
1070 int ctdb_start_recoverd(struct ctdb_context *ctdb);
1071 void ctdb_stop_recoverd(struct ctdb_context *ctdb);
1072
1073 uint32_t ctdb_get_num_active_nodes(struct ctdb_context *ctdb);
1074
1075 void ctdb_disable_monitoring(struct ctdb_context *ctdb);
1076 void ctdb_enable_monitoring(struct ctdb_context *ctdb);
1077 void ctdb_stop_monitoring(struct ctdb_context *ctdb);
1078 void ctdb_wait_for_first_recovery(struct ctdb_context *ctdb);
1079 int ctdb_tcp_init(struct ctdb_context *ctdb);
1080 int ctdb_ibw_init(struct ctdb_context *ctdb);
1081 void ctdb_start_tcp_tickle_update(struct ctdb_context *ctdb);
1082 void ctdb_send_keepalive(struct ctdb_context *ctdb, uint32_t destnode);
1083 void ctdb_start_keepalive(struct ctdb_context *ctdb);
1084 void ctdb_stop_keepalive(struct ctdb_context *ctdb);
1085 int32_t ctdb_run_eventscripts(struct ctdb_context *ctdb, struct ctdb_req_control *c, TDB_DATA data, bool *async_reply);
1086
1087
1088 void ctdb_daemon_cancel_controls(struct ctdb_context *ctdb, struct ctdb_node *node);
1089 void ctdb_call_resend_all(struct ctdb_context *ctdb);
1090 void ctdb_node_dead(struct ctdb_node *node);
1091 void ctdb_node_connected(struct ctdb_node *node);
1092 bool ctdb_blocking_freeze(struct ctdb_context *ctdb);
1093 void set_scheduler(void);
1094 void reset_scheduler(void);
1095
1096 struct tevent_signal *ctdb_init_sigchld(struct ctdb_context *ctdb);
1097 void ctdb_track_child(struct ctdb_context *ctdb, pid_t pid);
1098 pid_t ctdb_fork(struct ctdb_context *ctdb);
1099 pid_t ctdb_fork_no_free_ringbuffer(struct ctdb_context *ctdb);
1100 void ctdb_set_child_info(TALLOC_CTX *mem_ctx, const char *child_name_fmt, ...);
1101 bool ctdb_is_child_process(void);
1102 int ctdb_kill(struct ctdb_context *ctdb, pid_t pid, int signum);
1103
1104 int32_t ctdb_control_takeover_ip(struct ctdb_context *ctdb,
1105 struct ctdb_req_control *c,
1106 TDB_DATA indata,
1107 bool *async_reply);
1108 int32_t ctdb_control_takeover_ipv4(struct ctdb_context *ctdb,
1109 struct ctdb_req_control *c,
1110 TDB_DATA indata,
1111 bool *async_reply);
1112 int32_t ctdb_control_release_ip(struct ctdb_context *ctdb,
1113 struct ctdb_req_control *c,
1114 TDB_DATA indata,
1115 bool *async_reply);
1116 int32_t ctdb_control_release_ipv4(struct ctdb_context *ctdb,
1117 struct ctdb_req_control *c,
1118 TDB_DATA indata,
1119 bool *async_reply);
1120 int32_t ctdb_control_ipreallocated(struct ctdb_context *ctdb,
1121 struct ctdb_req_control *c,
1122 bool *async_reply);
1123 int32_t ctdb_control_start_recovery(struct ctdb_context *ctdb,
1124 struct ctdb_req_control *c,
1125 bool *async_reply);
1126 int32_t ctdb_control_end_recovery(struct ctdb_context *ctdb,
1127 struct ctdb_req_control *c,
1128 bool *async_reply);
1129
1130 struct ctdb_public_ipv4 {
1131 uint32_t pnn;
1132 struct sockaddr_in sin;
1133 };
1134
1135 int ctdb_ctrl_takeover_ip(struct ctdb_context *ctdb, struct timeval timeout,
1136 uint32_t destnode, struct ctdb_public_ip *ip);
1137 int ctdb_ctrl_release_ip(struct ctdb_context *ctdb, struct timeval timeout,
1138 uint32_t destnode, struct ctdb_public_ip *ip);
1139
1140 struct ctdb_all_public_ipsv4 {
1141 uint32_t num;
1142 struct ctdb_public_ipv4 ips[1];
1143 };
1144
1145 int32_t ctdb_control_get_public_ipsv4(struct ctdb_context *ctdb, struct ctdb_req_control *c, TDB_DATA *outdata);
1146 int32_t ctdb_control_get_public_ips(struct ctdb_context *ctdb, struct ctdb_req_control *c, TDB_DATA *outdata);
1147 int ctdb_ctrl_get_public_ips(struct ctdb_context *ctdb,
1148 struct timeval timeout,
1149 uint32_t destnode,
1150 TALLOC_CTX *mem_ctx,
1151 struct ctdb_all_public_ips **ips);
1152 #define CTDB_PUBLIC_IP_FLAGS_ONLY_AVAILABLE 0x00010000
1153 int ctdb_ctrl_get_public_ips_flags(struct ctdb_context *ctdb,
1154 struct timeval timeout, uint32_t destnode,
1155 TALLOC_CTX *mem_ctx,
1156 uint32_t flags,
1157 struct ctdb_all_public_ips **ips);
1158 int ctdb_ctrl_get_public_ipsv4(struct ctdb_context *ctdb,
1159 struct timeval timeout, uint32_t destnode,
1160 TALLOC_CTX *mem_ctx, struct ctdb_all_public_ips **ips);
1161
1162 struct ctdb_control_iface_info {
1163 char name[CTDB_IFACE_SIZE+2];
1164 uint16_t link_state;
1165 uint32_t references;
1166 };
1167
1168 struct ctdb_control_public_ip_info {
1169 struct ctdb_public_ip ip;
1170 uint32_t active_idx;
1171 uint32_t num;
1172 struct ctdb_control_iface_info ifaces[1];
1173 };
1174
1175 struct ctdb_control_get_ifaces {
1176 uint32_t num;
1177 struct ctdb_control_iface_info ifaces[1];
1178 };
1179
1180 int32_t ctdb_control_get_public_ip_info(struct ctdb_context *ctdb,
1181 struct ctdb_req_control *c,
1182 TDB_DATA indata,
1183 TDB_DATA *outdata);
1184 int32_t ctdb_control_get_ifaces(struct ctdb_context *ctdb,
1185 struct ctdb_req_control *c,
1186 TDB_DATA *outdata);
1187 int32_t ctdb_control_set_iface_link(struct ctdb_context *ctdb,
1188 struct ctdb_req_control *c,
1189 TDB_DATA indata);
1190 int ctdb_ctrl_get_public_ip_info(struct ctdb_context *ctdb,
1191 struct timeval timeout, uint32_t destnode,
1192 TALLOC_CTX *mem_ctx,
1193 const ctdb_sock_addr *addr,
1194 struct ctdb_control_public_ip_info **info);
1195 int ctdb_ctrl_get_ifaces(struct ctdb_context *ctdb,
1196 struct timeval timeout, uint32_t destnode,
1197 TALLOC_CTX *mem_ctx,
1198 struct ctdb_control_get_ifaces **ifaces);
1199 int ctdb_ctrl_set_iface_link(struct ctdb_context *ctdb,
1200 struct timeval timeout, uint32_t destnode,
1201 TALLOC_CTX *mem_ctx,
1202 const struct ctdb_control_iface_info *info);
1203
1204 /* from takeover/system.c */
1205 uint32_t uint16_checksum(uint16_t *data, size_t n);
1206 int ctdb_sys_send_arp(const ctdb_sock_addr *addr, const char *iface);
1207 bool ctdb_sys_have_ip(ctdb_sock_addr *addr);
1208 char *ctdb_sys_find_ifname(ctdb_sock_addr *addr);
1209 bool ctdb_sys_check_iface_exists(const char *iface);
1210 int ctdb_get_peer_pid(const int fd, pid_t *peer_pid);
1211 int ctdb_sys_send_tcp(const ctdb_sock_addr *dest,
1212 const ctdb_sock_addr *src,
1213 uint32_t seq, uint32_t ack, int rst);
1214
1215 /* Details of a byte range lock */
1216 struct ctdb_lock_info {
1217 ino_t inode;
1218 off_t start, end;
1219 bool waiting;
1220 bool read_only;
1221 };
1222
1223 char *ctdb_get_process_name(pid_t pid);
1224 int ctdb_set_process_name(const char *name);
1225 bool ctdb_get_lock_info(pid_t req_pid, struct ctdb_lock_info *lock_info);
1226 bool ctdb_get_blocker_pid(struct ctdb_lock_info *reqlock, pid_t *blocker_pid);
1227
1228 typedef void (*client_async_callback)(struct ctdb_context *ctdb, uint32_t node_pnn, int32_t res, TDB_DATA outdata, void *callback_data);
1229
1230 int ctdb_set_public_addresses(struct ctdb_context *ctdb, bool check_addresses);
1231 int ctdb_set_single_public_ip(struct ctdb_context *ctdb,
1232 const char *iface,
1233 const char *ip);
1234 int ctdb_set_event_script(struct ctdb_context *ctdb, const char *script);
1235 int ctdb_set_notification_script(struct ctdb_context *ctdb, const char *script);
1236 int ctdb_takeover_run(struct ctdb_context *ctdb, struct ctdb_node_map *nodemap,
1237 uint32_t *force_rebalance_nodes,
1238 client_async_callback fail_callback, void *callback_data);
1239
1240 int32_t ctdb_control_tcp_client(struct ctdb_context *ctdb, uint32_t client_id,
1241 TDB_DATA indata);
1242 int32_t ctdb_control_tcp_add(struct ctdb_context *ctdb, TDB_DATA indata, bool tcp_update_needed);
1243 int32_t ctdb_control_tcp_remove(struct ctdb_context *ctdb, TDB_DATA indata);
1244 int32_t ctdb_control_startup(struct ctdb_context *ctdb, uint32_t vnn);
1245 int32_t ctdb_control_kill_tcp(struct ctdb_context *ctdb, TDB_DATA indata);
1246 int32_t ctdb_control_send_gratious_arp(struct ctdb_context *ctdb, TDB_DATA indata);
1247 int32_t ctdb_control_get_tcp_tickle_list(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
1248 int32_t ctdb_control_set_tcp_tickle_list(struct ctdb_context *ctdb, TDB_DATA indata);
1249
1250 void ctdb_takeover_client_destructor_hook(struct ctdb_client *client);
1251 int ctdb_event_script(struct ctdb_context *ctdb, enum ctdb_eventscript_call call);
1252 int ctdb_event_script_args(struct ctdb_context *ctdb, enum ctdb_eventscript_call call,
1253 const char *fmt, ...) PRINTF_ATTRIBUTE(3,4);
1254 int ctdb_event_script_callback(struct ctdb_context *ctdb,
1255 TALLOC_CTX *mem_ctx,
1256 void (*callback)(struct ctdb_context *, int, void *),
1257 void *private_data,
1258 enum ctdb_eventscript_call call,
1259 const char *fmt, ...) PRINTF_ATTRIBUTE(6,7);
1260 void ctdb_release_all_ips(struct ctdb_context *ctdb);
1261
1262 void set_nonblocking(int fd);
1263 void set_close_on_exec(int fd);
1264
1265 bool ctdb_recovery_lock(struct ctdb_context *ctdb, bool keep);
1266
1267 int ctdb_set_recovery_lock_file(struct ctdb_context *ctdb, const char *file);
1268
1269 int32_t ctdb_control_get_tunable(struct ctdb_context *ctdb, TDB_DATA indata,
1270 TDB_DATA *outdata);
1271 int32_t ctdb_control_set_tunable(struct ctdb_context *ctdb, TDB_DATA indata);
1272 int32_t ctdb_control_list_tunables(struct ctdb_context *ctdb, TDB_DATA *outdata);
1273 int32_t ctdb_control_try_delete_records(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
1274 int32_t ctdb_control_receive_records(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
1275 int32_t ctdb_control_add_public_address(struct ctdb_context *ctdb, TDB_DATA indata);
1276 int32_t ctdb_control_del_public_address(struct ctdb_context *ctdb,
1277 struct ctdb_req_control *c,
1278 TDB_DATA recdata, bool *async_reply);
1279
1280 void ctdb_tunables_set_defaults(struct ctdb_context *ctdb);
1281
1282 int32_t ctdb_control_modflags(struct ctdb_context *ctdb, TDB_DATA indata);
1283
1284 int ctdb_ctrl_get_all_tunables(struct ctdb_context *ctdb,
1285 struct timeval timeout,
1286 uint32_t destnode,
1287 struct ctdb_tunable *tunables);
1288
1289 void ctdb_start_freeze(struct ctdb_context *ctdb, uint32_t priority);
1290
1291 bool parse_ip_mask(const char *s, const char *iface, ctdb_sock_addr *addr, unsigned *mask);
1292 bool parse_ip_port(const char *s, ctdb_sock_addr *addr);
1293 bool parse_ip(const char *s, const char *iface, unsigned port, ctdb_sock_addr *addr);
1294 bool parse_ipv4(const char *s, unsigned port, struct sockaddr_in *sin);
1295
1296
1297 int ctdb_sys_open_capture_socket(const char *iface, void **private_data);
1298 int ctdb_sys_close_capture_socket(void *private_data);
1299 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);
1300
1301 int ctdb_ctrl_killtcp(struct ctdb_context *ctdb,
1302 struct timeval timeout,
1303 uint32_t destnode,
1304 struct ctdb_control_killtcp *killtcp);
1305
1306 int ctdb_ctrl_add_public_ip(struct ctdb_context *ctdb,
1307 struct timeval timeout,
1308 uint32_t destnode,
1309 struct ctdb_control_ip_iface *pub);
1310
1311 int ctdb_ctrl_del_public_ip(struct ctdb_context *ctdb,
1312 struct timeval timeout,
1313 uint32_t destnode,
1314 struct ctdb_control_ip_iface *pub);
1315
1316 int ctdb_ctrl_gratious_arp(struct ctdb_context *ctdb,
1317 struct timeval timeout,
1318 uint32_t destnode,
1319 ctdb_sock_addr *addr,
1320 const char *ifname);
1321
1322 int ctdb_ctrl_get_tcp_tickles(struct ctdb_context *ctdb,
1323 struct timeval timeout,
1324 uint32_t destnode,
1325 TALLOC_CTX *mem_ctx,
1326 ctdb_sock_addr *addr,
1327 struct ctdb_control_tcp_tickle_list **list);
1328
1329
1330 int32_t ctdb_control_register_server_id(struct ctdb_context *ctdb,
1331 uint32_t client_id,
1332 TDB_DATA indata);
1333 int32_t ctdb_control_check_server_id(struct ctdb_context *ctdb,
1334 TDB_DATA indata);
1335 int32_t ctdb_control_unregister_server_id(struct ctdb_context *ctdb,
1336 TDB_DATA indata);
1337 int32_t ctdb_control_get_server_id_list(struct ctdb_context *ctdb,
1338 TDB_DATA *outdata);
1339 int32_t ctdb_control_uptime(struct ctdb_context *ctdb,
1340 TDB_DATA *outdata);
1341
1342 int ctdb_attach_databases(struct ctdb_context *ctdb);
1343
1344 int32_t ctdb_control_persistent_store(struct ctdb_context *ctdb,
1345 struct ctdb_req_control *c,
1346 TDB_DATA recdata, bool *async_reply);
1347 int32_t ctdb_control_update_record(struct ctdb_context *ctdb,
1348 struct ctdb_req_control *c, TDB_DATA recdata,
1349 bool *async_reply);
1350 int32_t ctdb_control_trans2_commit(struct ctdb_context *ctdb,
1351 struct ctdb_req_control *c,
1352 TDB_DATA recdata, bool *async_reply);
1353
1354 int32_t ctdb_control_trans3_commit(struct ctdb_context *ctdb,
1355 struct ctdb_req_control *c,
1356 TDB_DATA recdata, bool *async_reply);
1357
1358 void ctdb_persistent_finish_trans3_commits(struct ctdb_context *ctdb);
1359
1360 int32_t ctdb_control_transaction_start(struct ctdb_context *ctdb, uint32_t id);
1361 int32_t ctdb_control_transaction_commit(struct ctdb_context *ctdb, uint32_t id);
1362 int32_t ctdb_control_transaction_cancel(struct ctdb_context *ctdb);
1363 int32_t ctdb_control_wipe_database(struct ctdb_context *ctdb, TDB_DATA indata);
1364 int32_t ctdb_control_db_set_healthy(struct ctdb_context *ctdb, TDB_DATA indata);
1365 int32_t ctdb_control_db_get_health(struct ctdb_context *ctdb,
1366 TDB_DATA indata,
1367 TDB_DATA *outdata);
1368
1369
1370 int ctdb_vacuum(struct ctdb_context *ctdb, int argc, const char **argv);
1371 int ctdb_repack(struct ctdb_context *ctdb, int argc, const char **argv);
1372
1373 int32_t ctdb_monitoring_mode(struct ctdb_context *ctdb);
1374 bool ctdb_stopped_monitoring(struct ctdb_context *ctdb);
1375 int ctdb_set_child_logging(struct ctdb_context *ctdb);
1376 void lockdown_memory(bool valgrinding);
1377
1378 struct client_async_data {
1379 enum ctdb_controls opcode;
1380 bool dont_log_errors;
1381 uint32_t count;
1382 uint32_t fail_count;
1383 client_async_callback callback;
1384 client_async_callback fail_callback;
1385 void *callback_data;
1386 };
1387 void ctdb_client_async_add(struct client_async_data *data, struct ctdb_client_control_state *state);
1388 int ctdb_client_async_wait(struct ctdb_context *ctdb, struct client_async_data *data);
1389 int ctdb_client_async_control(struct ctdb_context *ctdb,
1390 enum ctdb_controls opcode,
1391 uint32_t *nodes,
1392 uint64_t srvid,
1393 struct timeval timeout,
1394 bool dont_log_errors,
1395 TDB_DATA data,
1396 client_async_callback client_callback,
1397 client_async_callback fail_callback,
1398 void *callback_data);
1399
1400 void ctdb_load_nodes_file(struct ctdb_context *ctdb);
1401
1402 int ctdb_control_reload_nodes_file(struct ctdb_context *ctdb, uint32_t opcode);
1403
1404 int32_t ctdb_dump_memory(struct ctdb_context *ctdb, TDB_DATA *outdata);
1405 int32_t ctdb_control_get_capabilities(struct ctdb_context *ctdb, TDB_DATA *outdata);
1406
1407 int32_t ctdb_control_trans2_finished(struct ctdb_context *ctdb,
1408 struct ctdb_req_control *c);
1409 int32_t ctdb_control_trans2_error(struct ctdb_context *ctdb,
1410 struct ctdb_req_control *c);
1411 int32_t ctdb_control_trans2_active(struct ctdb_context *ctdb,
1412 struct ctdb_req_control *c,
1413 uint32_t db_id);
1414
1415 char *ctdb_addr_to_str(ctdb_sock_addr *addr);
1416 unsigned ctdb_addr_to_port(ctdb_sock_addr *addr);
1417 void ctdb_canonicalize_ip(const ctdb_sock_addr *ip, ctdb_sock_addr *cip);
1418
1419 int32_t ctdb_control_recd_ping(struct ctdb_context *ctdb);
1420 int32_t ctdb_control_set_recmaster(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata);
1421
1422 extern int script_log_level;
1423 extern bool fast_start;
1424 extern const char *ctdbd_pidfile;
1425
1426 int32_t ctdb_control_get_event_script_status(struct ctdb_context *ctdb,
1427 uint32_t call_type,
1428 TDB_DATA *outdata);
1429
1430 int ctdb_log_event_script_output(struct ctdb_context *ctdb, char *str, uint16_t len);
1431 int ctdb_ctrl_report_recd_lock_latency(struct ctdb_context *ctdb, struct timeval timeout, double latency);
1432
1433 int32_t ctdb_control_stop_node(struct ctdb_context *ctdb);
1434 int32_t ctdb_control_continue_node(struct ctdb_context *ctdb);
1435
1436 void ctdb_stop_vacuuming(struct ctdb_context *ctdb);
1437 int ctdb_vacuum_init(struct ctdb_db_context *ctdb_db);
1438
1439 int32_t ctdb_control_enable_script(struct ctdb_context *ctdb, TDB_DATA indata);
1440 int32_t ctdb_control_disable_script(struct ctdb_context *ctdb, TDB_DATA indata);
1441
1442 void ctdb_local_node_got_banned(struct ctdb_context *ctdb);
1443 int32_t ctdb_control_set_ban_state(struct ctdb_context *ctdb, TDB_DATA indata);
1444 int32_t ctdb_control_get_ban_state(struct ctdb_context *ctdb, TDB_DATA *outdata);
1445 int32_t ctdb_control_set_db_priority(struct ctdb_context *ctdb, TDB_DATA indata,
1446 uint32_t client_id);
1447 void ctdb_ban_self(struct ctdb_context *ctdb);
1448
1449 int32_t ctdb_control_register_notify(struct ctdb_context *ctdb, uint32_t client_id, TDB_DATA indata);
1450
1451 int32_t ctdb_control_deregister_notify(struct ctdb_context *ctdb, uint32_t client_id, TDB_DATA indata);
1452
1453 int start_syslog_daemon(struct ctdb_context *ctdb);
1454
1455 /* Where to send the log messages back to */
1456 struct ctdb_get_log_addr {
1457 uint32_t pnn;
1458 uint64_t srvid;
1459 int32_t level;
1460 };
1461
1462 extern int log_ringbuf_size;
1463
1464 TDB_DATA ctdb_log_ringbuffer_collect_log(TALLOC_CTX *mem_ctx,
1465 enum debug_level max_level);
1466 void ctdb_collect_log(struct ctdb_context *ctdb, struct ctdb_get_log_addr *log_addr);
1467 void ctdb_clear_log(struct ctdb_context *ctdb);
1468 int32_t ctdb_control_get_log(struct ctdb_context *ctdb, TDB_DATA addr);
1469 int32_t ctdb_control_clear_log(struct ctdb_context *ctdb);
1470 void ctdb_log_ringbuffer_free(void);
1471
1472 struct ctdb_log_state *ctdb_vfork_with_logging(TALLOC_CTX *mem_ctx,
1473 struct ctdb_context *ctdb,
1474 const char *log_prefix,
1475 const char *helper,
1476 int helper_argc,
1477 const char **helper_argv,
1478 void (*logfn)(const char *, uint16_t, void *),
1479 void *logfn_private, pid_t *pid);
1480
1481
1482 int32_t ctdb_control_process_exists(struct ctdb_context *ctdb, pid_t pid);
1483 struct ctdb_client *ctdb_find_client_by_pid(struct ctdb_context *ctdb, pid_t pid);
1484
1485 int32_t ctdb_control_get_db_seqnum(struct ctdb_context *ctdb,
1486 TDB_DATA indata,
1487 TDB_DATA *outdata);
1488
1489 int ctdb_load_persistent_health(struct ctdb_context *ctdb,
1490 struct ctdb_db_context *ctdb_db);
1491 int ctdb_update_persistent_health(struct ctdb_context *ctdb,
1492 struct ctdb_db_context *ctdb_db,
1493 const char *reason,/* NULL means healthy */
1494 int num_healthy_nodes);
1495 int ctdb_recheck_persistent_health(struct ctdb_context *ctdb);
1496
1497 void ctdb_run_notification_script(struct ctdb_context *ctdb, const char *event);
1498
1499 void ctdb_fault_setup(void);
1500
1501 int verify_remote_ip_allocation(struct ctdb_context *ctdb,
1502 struct ctdb_all_public_ips *ips,
1503 uint32_t pnn);
1504 int update_ip_assignment_tree(struct ctdb_context *ctdb,
1505 struct ctdb_public_ip *ip);
1506
1507 int ctdb_init_tevent_logging(struct ctdb_context *ctdb);
1508
1509 int ctdb_statistics_init(struct ctdb_context *ctdb);
1510
1511 int32_t ctdb_control_get_stat_history(struct ctdb_context *ctdb,
1512 struct ctdb_req_control *c,
1513 TDB_DATA *outdata);
1514
1515 int ctdb_deferred_drop_all_ips(struct ctdb_context *ctdb);
1516
1517 int ctdb_process_deferred_attach(struct ctdb_context *ctdb);
1518
1519 /**
1520 * structure to pass to a schedule_for_deletion_control
1521 */
1522 struct ctdb_control_schedule_for_deletion {
1523 uint32_t db_id;
1524 struct ctdb_ltdb_header hdr;
1525 uint32_t keylen;
1526 uint8_t key[1]; /* key[] */
1527 };
1528
1529 int32_t ctdb_control_schedule_for_deletion(struct ctdb_context *ctdb,
1530 TDB_DATA indata);
1531
1532
1533 int32_t ctdb_local_schedule_for_deletion(struct ctdb_db_context *ctdb_db,
1534 const struct ctdb_ltdb_header *hdr,
1535 TDB_DATA key);
1536
1537 void ctdb_local_remove_from_delete_queue(struct ctdb_db_context *ctdb_db,
1538 const struct ctdb_ltdb_header *hdr,
1539 const TDB_DATA key);
1540
1541 struct ctdb_ltdb_header *ctdb_header_from_record_handle(struct ctdb_record_handle *h);
1542
1543 int ctdb_trackingdb_add_pnn(struct ctdb_context *ctdb, TDB_DATA *data, uint32_t pnn);
1544
1545 typedef void (*ctdb_trackingdb_cb)(struct ctdb_context *ctdb, uint32_t pnn, void *private_data);
1546
1547 void ctdb_trackingdb_traverse(struct ctdb_context *ctdb, TDB_DATA data, ctdb_trackingdb_cb cb, void *private_data);
1548
1549 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);
1550
1551 typedef void (*deferred_requeue_fn)(void *call_context, struct ctdb_req_header *hdr);
1552
1553 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);
1554
1555 int ctdb_set_db_readonly(struct ctdb_context *ctdb, struct ctdb_db_context *ctdb_db);
1556
1557 int ctdb_null_func(struct ctdb_call_info *call);
1558
1559 int ctdb_fetch_func(struct ctdb_call_info *call);
1560
1561 int ctdb_fetch_with_header_func(struct ctdb_call_info *call);
1562
1563 int32_t ctdb_control_get_db_statistics(struct ctdb_context *ctdb,
1564 uint32_t db_id,
1565 TDB_DATA *outdata);
1566
1567 int ctdb_set_db_sticky(struct ctdb_context *ctdb, struct ctdb_db_context *ctdb_db);
1568
1569 /*
1570 description for a message to reload all ips via recovery master/daemon
1571 */
1572 struct reloadips_all_reply {
1573 uint32_t pnn;
1574 uint64_t srvid;
1575 };
1576
1577 int32_t ctdb_control_reload_public_ips(struct ctdb_context *ctdb, struct ctdb_req_control *c, bool *async_reply);
1578
1579 int ctdb_start_monitoring_interfaces(struct ctdb_context *ctdb);
1580
1581 /* from server/ctdb_lock.c */
1582 struct lock_request;
1583
1584 int ctdb_lockall_mark_prio(struct ctdb_context *ctdb, uint32_t priority);
1585 int ctdb_lockall_unmark_prio(struct ctdb_context *ctdb, uint32_t priority);
1586
1587 struct lock_request *ctdb_lock_record(TALLOC_CTX *mem_ctx,
1588 struct ctdb_db_context *ctdb_db,
1589 TDB_DATA key,
1590 bool auto_mark,
1591 void (*callback)(void *, bool),
1592 void *private_data);
1593
1594 struct lock_request *ctdb_lock_db(TALLOC_CTX *mem_ctx,
1595 struct ctdb_db_context *ctdb_db,
1596 bool auto_mark,
1597 void (*callback)(void *, bool),
1598 void *private_data);
1599
1600 struct lock_request *ctdb_lock_alldb_prio(TALLOC_CTX *mem_ctx,
1601 struct ctdb_context *ctdb,
1602 uint32_t priority,
1603 bool auto_mark,
1604 void (*callback)(void *, bool),
1605 void *private_data);
1606
1607 struct lock_request *ctdb_lock_alldb(TALLOC_CTX *mem_ctx,
1608 struct ctdb_context *ctdb,
1609 bool auto_mark,
1610 void (*callback)(void *, bool),
1611 void *private_data);
1612
1613 int mkdir_p(const char *dir, int mode);
1614 void mkdir_p_or_die(const char *dir, int mode);
1615
1616 ssize_t sys_read(int fd, void *buf, size_t count);
1617 ssize_t sys_write(int fd, const void *buf, size_t count);
1618
1619 #endif
Samba GIT mirror