?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
ctdb-common: New function ctdb_set_helper()
[Samba.git] / ctdb / include / ctdb_private.h
blobed4d612620e9c67eb5902ef3984dc101e3b43edf
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 enum ctdb_runstate runstate;
518 struct ctdb_monitor_state *monitor;
519 int start_as_disabled;
520 int start_as_stopped;
521 bool valgrinding;
522 uint32_t event_script_timeouts; /* counting how many consecutive times an eventscript has timedout */
523 uint32_t *recd_ping_count;
524 TALLOC_CTX *recd_ctx; /* a context used to track recoverd monitoring events */
525 TALLOC_CTX *release_ips_ctx; /* a context used to automatically drop all IPs if we fail to recover the node */
526
527 TALLOC_CTX *event_script_ctx;
528 int active_events;
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 struct lock_context *lock_current;
560 struct lock_context *lock_pending;
561 };
562
563 struct ctdb_db_context {
564 struct ctdb_db_context *next, *prev;
565 struct ctdb_context *ctdb;
566 uint32_t db_id;
567 uint32_t priority;
568 bool persistent;
569 bool readonly; /* Do we support read-only delegations ? */
570 bool sticky; /* Do we support sticky records ? */
571 const char *db_name;
572 const char *db_path;
573 struct tdb_wrap *ltdb;
574 struct tdb_context *rottdb; /* ReadOnly tracking TDB */
575 struct ctdb_registered_call *calls; /* list of registered calls */
576 uint32_t seqnum;
577 struct timed_event *seqnum_update;
578 struct ctdb_traverse_local_handle *traverse;
579 struct ctdb_vacuum_handle *vacuum_handle;
580 char *unhealthy_reason;
581 int pending_requests;
582 struct revokechild_handle *revokechild_active;
583 struct ctdb_persistent_state *persistent_state;
584 struct trbt_tree *delete_queue;
585 struct trbt_tree *sticky_records;
586 int (*ctdb_ltdb_store_fn)(struct ctdb_db_context *ctdb_db,
587 TDB_DATA key,
588 struct ctdb_ltdb_header *header,
589 TDB_DATA data);
590
591 /* used to track which records we are currently fetching
592 so we can avoid sending duplicate fetch requests
593 */
594 struct trbt_tree *deferred_fetch;
595 struct trbt_tree *defer_dmaster;
596
597 struct ctdb_db_statistics statistics;
598
599 struct lock_context *lock_current;
600 struct lock_context *lock_pending;
601 int lock_num_current;
602 };
603
604
605 #define CTDB_NO_MEMORY(ctdb, p) do { if (!(p)) { \
606 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
607 ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
608 return -1; }} while (0)
609
610 #define CTDB_NO_MEMORY_VOID(ctdb, p) do { if (!(p)) { \
611 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
612 ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
613 return; }} while (0)
614
615 #define CTDB_NO_MEMORY_NULL(ctdb, p) do { if (!(p)) { \
616 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
617 ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
618 return NULL; }} while (0)
619
620 #define CTDB_NO_MEMORY_FATAL(ctdb, p) do { if (!(p)) { \
621 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
622 ctdb_fatal(ctdb, "Out of memory in " __location__ ); \
623 }} while (0)
624
625 /*
626 structure passed in set_call control
627 */
628 struct ctdb_control_set_call {
629 uint32_t db_id;
630 ctdb_fn_t fn;
631 uint32_t id;
632 };
633
634 /*
635 struct for kill_tcp control
636 */
637 struct ctdb_control_killtcp {
638 ctdb_sock_addr src_addr;
639 ctdb_sock_addr dst_addr;
640 };
641
642 /*
643 struct holding a ctdb_sock_addr and an interface name,
644 used to add/remove public addresses
645 */
646 struct ctdb_control_ip_iface {
647 ctdb_sock_addr addr;
648 uint32_t mask;
649 uint32_t len;
650 char iface[1];
651 };
652
653 /*
654 struct holding a ctdb_sock_addr and an interface name,
655 used for send_gratious_arp
656 */
657 struct ctdb_control_gratious_arp {
658 ctdb_sock_addr addr;
659 uint32_t mask;
660 uint32_t len;
661 char iface[1];
662 };
663
664 /*
665 persistent store control - update this record on all other nodes
666 */
667 struct ctdb_control_persistent_store {
668 uint32_t db_id;
669 uint32_t len;
670 uint8_t data[1];
671 };
672
673 /*
674 structure used for CTDB_SRVID_NODE_FLAGS_CHANGED
675 */
676 struct ctdb_node_flag_change {
677 uint32_t pnn;
678 uint32_t new_flags;
679 uint32_t old_flags;
680 };
681
682 /*
683 struct for admin setting a ban
684 */
685 struct ctdb_ban_info {
686 uint32_t pnn;
687 uint32_t ban_time;
688 };
689
690 enum call_state {CTDB_CALL_WAIT, CTDB_CALL_DONE, CTDB_CALL_ERROR};
691
692 #define CTDB_LMASTER_ANY 0xffffffff
693
694 /*
695 state of a in-progress ctdb call
696 */
697 struct ctdb_call_state {
698 struct ctdb_call_state *next, *prev;
699 enum call_state state;
700 uint32_t reqid;
701 struct ctdb_req_call *c;
702 struct ctdb_db_context *ctdb_db;
703 const char *errmsg;
704 struct ctdb_call *call;
705 uint32_t generation;
706 struct {
707 void (*fn)(struct ctdb_call_state *);
708 void *private_data;
709 } async;
710 };
711
712
713 /* used for fetch_lock */
714 struct ctdb_fetch_handle {
715 struct ctdb_db_context *ctdb_db;
716 TDB_DATA key;
717 TDB_DATA *data;
718 struct ctdb_ltdb_header header;
719 };
720
721 /* internal prototypes */
722 void ctdb_set_error(struct ctdb_context *ctdb, const char *fmt, ...) PRINTF_ATTRIBUTE(2,3);
723 void ctdb_fatal(struct ctdb_context *ctdb, const char *msg);
724 void ctdb_die(struct ctdb_context *ctdb, const char *msg);
725 bool ctdb_set_helper(const char *type, char *helper, size_t size,
726 const char *envvar, const char *dir, const char *file);
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
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 bool 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 void ctdb_set_child_info(TALLOC_CTX *mem_ctx, const char *child_name_fmt, ...);
1100 bool ctdb_is_child_process(void);
1101 int ctdb_kill(struct ctdb_context *ctdb, pid_t pid, int signum);
1102
1103 int32_t ctdb_control_takeover_ip(struct ctdb_context *ctdb,
1104 struct ctdb_req_control *c,
1105 TDB_DATA indata,
1106 bool *async_reply);
1107 int32_t ctdb_control_takeover_ipv4(struct ctdb_context *ctdb,
1108 struct ctdb_req_control *c,
1109 TDB_DATA indata,
1110 bool *async_reply);
1111 int32_t ctdb_control_release_ip(struct ctdb_context *ctdb,
1112 struct ctdb_req_control *c,
1113 TDB_DATA indata,
1114 bool *async_reply);
1115 int32_t ctdb_control_release_ipv4(struct ctdb_context *ctdb,
1116 struct ctdb_req_control *c,
1117 TDB_DATA indata,
1118 bool *async_reply);
1119 int32_t ctdb_control_ipreallocated(struct ctdb_context *ctdb,
1120 struct ctdb_req_control *c,
1121 bool *async_reply);
1122 int32_t ctdb_control_start_recovery(struct ctdb_context *ctdb,
1123 struct ctdb_req_control *c,
1124 bool *async_reply);
1125 int32_t ctdb_control_end_recovery(struct ctdb_context *ctdb,
1126 struct ctdb_req_control *c,
1127 bool *async_reply);
1128
1129 struct ctdb_public_ipv4 {
1130 uint32_t pnn;
1131 struct sockaddr_in sin;
1132 };
1133
1134 int ctdb_ctrl_takeover_ip(struct ctdb_context *ctdb, struct timeval timeout,
1135 uint32_t destnode, struct ctdb_public_ip *ip);
1136 int ctdb_ctrl_release_ip(struct ctdb_context *ctdb, struct timeval timeout,
1137 uint32_t destnode, struct ctdb_public_ip *ip);
1138
1139 struct ctdb_all_public_ipsv4 {
1140 uint32_t num;
1141 struct ctdb_public_ipv4 ips[1];
1142 };
1143
1144 int32_t ctdb_control_get_public_ipsv4(struct ctdb_context *ctdb, struct ctdb_req_control *c, TDB_DATA *outdata);
1145 int32_t ctdb_control_get_public_ips(struct ctdb_context *ctdb, struct ctdb_req_control *c, TDB_DATA *outdata);
1146 int ctdb_ctrl_get_public_ips(struct ctdb_context *ctdb,
1147 struct timeval timeout,
1148 uint32_t destnode,
1149 TALLOC_CTX *mem_ctx,
1150 struct ctdb_all_public_ips **ips);
1151 #define CTDB_PUBLIC_IP_FLAGS_ONLY_AVAILABLE 0x00010000
1152 int ctdb_ctrl_get_public_ips_flags(struct ctdb_context *ctdb,
1153 struct timeval timeout, uint32_t destnode,
1154 TALLOC_CTX *mem_ctx,
1155 uint32_t flags,
1156 struct ctdb_all_public_ips **ips);
1157 int ctdb_ctrl_get_public_ipsv4(struct ctdb_context *ctdb,
1158 struct timeval timeout, uint32_t destnode,
1159 TALLOC_CTX *mem_ctx, struct ctdb_all_public_ips **ips);
1160
1161 struct ctdb_control_iface_info {
1162 char name[CTDB_IFACE_SIZE+2];
1163 uint16_t link_state;
1164 uint32_t references;
1165 };
1166
1167 struct ctdb_control_public_ip_info {
1168 struct ctdb_public_ip ip;
1169 uint32_t active_idx;
1170 uint32_t num;
1171 struct ctdb_control_iface_info ifaces[1];
1172 };
1173
1174 struct ctdb_control_get_ifaces {
1175 uint32_t num;
1176 struct ctdb_control_iface_info ifaces[1];
1177 };
1178
1179 int32_t ctdb_control_get_public_ip_info(struct ctdb_context *ctdb,
1180 struct ctdb_req_control *c,
1181 TDB_DATA indata,
1182 TDB_DATA *outdata);
1183 int32_t ctdb_control_get_ifaces(struct ctdb_context *ctdb,
1184 struct ctdb_req_control *c,
1185 TDB_DATA *outdata);
1186 int32_t ctdb_control_set_iface_link(struct ctdb_context *ctdb,
1187 struct ctdb_req_control *c,
1188 TDB_DATA indata);
1189 int ctdb_ctrl_get_public_ip_info(struct ctdb_context *ctdb,
1190 struct timeval timeout, uint32_t destnode,
1191 TALLOC_CTX *mem_ctx,
1192 const ctdb_sock_addr *addr,
1193 struct ctdb_control_public_ip_info **info);
1194 int ctdb_ctrl_get_ifaces(struct ctdb_context *ctdb,
1195 struct timeval timeout, uint32_t destnode,
1196 TALLOC_CTX *mem_ctx,
1197 struct ctdb_control_get_ifaces **ifaces);
1198 int ctdb_ctrl_set_iface_link(struct ctdb_context *ctdb,
1199 struct timeval timeout, uint32_t destnode,
1200 TALLOC_CTX *mem_ctx,
1201 const struct ctdb_control_iface_info *info);
1202
1203 /* from takeover/system.c */
1204 uint32_t uint16_checksum(uint16_t *data, size_t n);
1205 int ctdb_sys_send_arp(const ctdb_sock_addr *addr, const char *iface);
1206 bool ctdb_sys_have_ip(ctdb_sock_addr *addr);
1207 char *ctdb_sys_find_ifname(ctdb_sock_addr *addr);
1208 bool ctdb_sys_check_iface_exists(const char *iface);
1209 int ctdb_get_peer_pid(const int fd, pid_t *peer_pid);
1210 int ctdb_sys_send_tcp(const ctdb_sock_addr *dest,
1211 const ctdb_sock_addr *src,
1212 uint32_t seq, uint32_t ack, int rst);
1213
1214 /* Details of a byte range lock */
1215 struct ctdb_lock_info {
1216 ino_t inode;
1217 off_t start, end;
1218 bool waiting;
1219 bool read_only;
1220 };
1221
1222 char *ctdb_get_process_name(pid_t pid);
1223 int ctdb_set_process_name(const char *name);
1224 bool ctdb_get_lock_info(pid_t req_pid, struct ctdb_lock_info *lock_info);
1225 bool ctdb_get_blocker_pid(struct ctdb_lock_info *reqlock, pid_t *blocker_pid);
1226
1227 typedef void (*client_async_callback)(struct ctdb_context *ctdb, uint32_t node_pnn, int32_t res, TDB_DATA outdata, void *callback_data);
1228
1229 int ctdb_set_public_addresses(struct ctdb_context *ctdb, bool check_addresses);
1230 int ctdb_set_single_public_ip(struct ctdb_context *ctdb,
1231 const char *iface,
1232 const char *ip);
1233 int ctdb_set_event_script(struct ctdb_context *ctdb, const char *script);
1234 int ctdb_set_notification_script(struct ctdb_context *ctdb, const char *script);
1235 int ctdb_takeover_run(struct ctdb_context *ctdb, struct ctdb_node_map *nodemap,
1236 uint32_t *force_rebalance_nodes,
1237 client_async_callback fail_callback, void *callback_data);
1238
1239 int32_t ctdb_control_tcp_client(struct ctdb_context *ctdb, uint32_t client_id,
1240 TDB_DATA indata);
1241 int32_t ctdb_control_tcp_add(struct ctdb_context *ctdb, TDB_DATA indata, bool tcp_update_needed);
1242 int32_t ctdb_control_tcp_remove(struct ctdb_context *ctdb, TDB_DATA indata);
1243 int32_t ctdb_control_startup(struct ctdb_context *ctdb, uint32_t vnn);
1244 int32_t ctdb_control_kill_tcp(struct ctdb_context *ctdb, TDB_DATA indata);
1245 int32_t ctdb_control_send_gratious_arp(struct ctdb_context *ctdb, TDB_DATA indata);
1246 int32_t ctdb_control_get_tcp_tickle_list(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
1247 int32_t ctdb_control_set_tcp_tickle_list(struct ctdb_context *ctdb, TDB_DATA indata);
1248
1249 void ctdb_takeover_client_destructor_hook(struct ctdb_client *client);
1250 int ctdb_event_script(struct ctdb_context *ctdb, enum ctdb_eventscript_call call);
1251 int ctdb_event_script_args(struct ctdb_context *ctdb, enum ctdb_eventscript_call call,
1252 const char *fmt, ...) PRINTF_ATTRIBUTE(3,4);
1253 int ctdb_event_script_callback(struct ctdb_context *ctdb,
1254 TALLOC_CTX *mem_ctx,
1255 void (*callback)(struct ctdb_context *, int, void *),
1256 void *private_data,
1257 enum ctdb_eventscript_call call,
1258 const char *fmt, ...) PRINTF_ATTRIBUTE(6,7);
1259 void ctdb_release_all_ips(struct ctdb_context *ctdb);
1260
1261 void set_nonblocking(int fd);
1262 void set_close_on_exec(int fd);
1263
1264 bool ctdb_recovery_have_lock(struct ctdb_context *ctdb);
1265 bool ctdb_recovery_lock(struct ctdb_context *ctdb);
1266 void ctdb_recovery_unlock(struct ctdb_context *ctdb);
1267
1268 int ctdb_set_recovery_lock_file(struct ctdb_context *ctdb, const char *file);
1269
1270 int32_t ctdb_control_get_tunable(struct ctdb_context *ctdb, TDB_DATA indata,
1271 TDB_DATA *outdata);
1272 int32_t ctdb_control_set_tunable(struct ctdb_context *ctdb, TDB_DATA indata);
1273 int32_t ctdb_control_list_tunables(struct ctdb_context *ctdb, TDB_DATA *outdata);
1274 int32_t ctdb_control_try_delete_records(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
1275 int32_t ctdb_control_receive_records(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
1276 int32_t ctdb_control_add_public_address(struct ctdb_context *ctdb, TDB_DATA indata);
1277 int32_t ctdb_control_del_public_address(struct ctdb_context *ctdb,
1278 struct ctdb_req_control *c,
1279 TDB_DATA recdata, bool *async_reply);
1280
1281 void ctdb_tunables_set_defaults(struct ctdb_context *ctdb);
1282
1283 int32_t ctdb_control_modflags(struct ctdb_context *ctdb, TDB_DATA indata);
1284
1285 int ctdb_ctrl_get_all_tunables(struct ctdb_context *ctdb,
1286 struct timeval timeout,
1287 uint32_t destnode,
1288 struct ctdb_tunable *tunables);
1289
1290 void ctdb_start_freeze(struct ctdb_context *ctdb, uint32_t priority);
1291
1292 bool parse_ip_mask(const char *s, const char *iface, ctdb_sock_addr *addr, unsigned *mask);
1293 bool parse_ip_port(const char *s, ctdb_sock_addr *addr);
1294 bool parse_ip(const char *s, const char *iface, unsigned port, ctdb_sock_addr *addr);
1295 bool parse_ipv4(const char *s, unsigned port, struct sockaddr_in *sin);
1296
1297
1298 int ctdb_sys_open_capture_socket(const char *iface, void **private_data);
1299 int ctdb_sys_close_capture_socket(void *private_data);
1300 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);
1301
1302 int ctdb_ctrl_killtcp(struct ctdb_context *ctdb,
1303 struct timeval timeout,
1304 uint32_t destnode,
1305 struct ctdb_control_killtcp *killtcp);
1306
1307 int ctdb_ctrl_add_public_ip(struct ctdb_context *ctdb,
1308 struct timeval timeout,
1309 uint32_t destnode,
1310 struct ctdb_control_ip_iface *pub);
1311
1312 int ctdb_ctrl_del_public_ip(struct ctdb_context *ctdb,
1313 struct timeval timeout,
1314 uint32_t destnode,
1315 struct ctdb_control_ip_iface *pub);
1316
1317 int ctdb_ctrl_gratious_arp(struct ctdb_context *ctdb,
1318 struct timeval timeout,
1319 uint32_t destnode,
1320 ctdb_sock_addr *addr,
1321 const char *ifname);
1322
1323 int ctdb_ctrl_get_tcp_tickles(struct ctdb_context *ctdb,
1324 struct timeval timeout,
1325 uint32_t destnode,
1326 TALLOC_CTX *mem_ctx,
1327 ctdb_sock_addr *addr,
1328 struct ctdb_control_tcp_tickle_list **list);
1329
1330
1331 int32_t ctdb_control_register_server_id(struct ctdb_context *ctdb,
1332 uint32_t client_id,
1333 TDB_DATA indata);
1334 int32_t ctdb_control_check_server_id(struct ctdb_context *ctdb,
1335 TDB_DATA indata);
1336 int32_t ctdb_control_unregister_server_id(struct ctdb_context *ctdb,
1337 TDB_DATA indata);
1338 int32_t ctdb_control_get_server_id_list(struct ctdb_context *ctdb,
1339 TDB_DATA *outdata);
1340 int32_t ctdb_control_uptime(struct ctdb_context *ctdb,
1341 TDB_DATA *outdata);
1342
1343 int ctdb_attach_databases(struct ctdb_context *ctdb);
1344
1345 int32_t ctdb_control_persistent_store(struct ctdb_context *ctdb,
1346 struct ctdb_req_control *c,
1347 TDB_DATA recdata, bool *async_reply);
1348 int32_t ctdb_control_update_record(struct ctdb_context *ctdb,
1349 struct ctdb_req_control *c, TDB_DATA recdata,
1350 bool *async_reply);
1351 int32_t ctdb_control_trans2_commit(struct ctdb_context *ctdb,
1352 struct ctdb_req_control *c,
1353 TDB_DATA recdata, bool *async_reply);
1354
1355 int32_t ctdb_control_trans3_commit(struct ctdb_context *ctdb,
1356 struct ctdb_req_control *c,
1357 TDB_DATA recdata, bool *async_reply);
1358
1359 void ctdb_persistent_finish_trans3_commits(struct ctdb_context *ctdb);
1360
1361 int32_t ctdb_control_transaction_start(struct ctdb_context *ctdb, uint32_t id);
1362 int32_t ctdb_control_transaction_commit(struct ctdb_context *ctdb, uint32_t id);
1363 int32_t ctdb_control_transaction_cancel(struct ctdb_context *ctdb);
1364 int32_t ctdb_control_wipe_database(struct ctdb_context *ctdb, TDB_DATA indata);
1365 int32_t ctdb_control_db_set_healthy(struct ctdb_context *ctdb, TDB_DATA indata);
1366 int32_t ctdb_control_db_get_health(struct ctdb_context *ctdb,
1367 TDB_DATA indata,
1368 TDB_DATA *outdata);
1369
1370
1371 int ctdb_vacuum(struct ctdb_context *ctdb, int argc, const char **argv);
1372 int ctdb_repack(struct ctdb_context *ctdb, int argc, const char **argv);
1373
1374 int32_t ctdb_monitoring_mode(struct ctdb_context *ctdb);
1375 bool ctdb_stopped_monitoring(struct ctdb_context *ctdb);
1376 int ctdb_set_child_logging(struct ctdb_context *ctdb);
1377 void lockdown_memory(bool valgrinding);
1378
1379 struct client_async_data {
1380 enum ctdb_controls opcode;
1381 bool dont_log_errors;
1382 uint32_t count;
1383 uint32_t fail_count;
1384 client_async_callback callback;
1385 client_async_callback fail_callback;
1386 void *callback_data;
1387 };
1388 void ctdb_client_async_add(struct client_async_data *data, struct ctdb_client_control_state *state);
1389 int ctdb_client_async_wait(struct ctdb_context *ctdb, struct client_async_data *data);
1390 int ctdb_client_async_control(struct ctdb_context *ctdb,
1391 enum ctdb_controls opcode,
1392 uint32_t *nodes,
1393 uint64_t srvid,
1394 struct timeval timeout,
1395 bool dont_log_errors,
1396 TDB_DATA data,
1397 client_async_callback client_callback,
1398 client_async_callback fail_callback,
1399 void *callback_data);
1400
1401 void ctdb_load_nodes_file(struct ctdb_context *ctdb);
1402
1403 int ctdb_control_reload_nodes_file(struct ctdb_context *ctdb, uint32_t opcode);
1404
1405 int32_t ctdb_dump_memory(struct ctdb_context *ctdb, TDB_DATA *outdata);
1406 int32_t ctdb_control_get_capabilities(struct ctdb_context *ctdb, TDB_DATA *outdata);
1407
1408 int32_t ctdb_control_trans2_finished(struct ctdb_context *ctdb,
1409 struct ctdb_req_control *c);
1410 int32_t ctdb_control_trans2_error(struct ctdb_context *ctdb,
1411 struct ctdb_req_control *c);
1412 int32_t ctdb_control_trans2_active(struct ctdb_context *ctdb,
1413 struct ctdb_req_control *c,
1414 uint32_t db_id);
1415
1416 char *ctdb_addr_to_str(ctdb_sock_addr *addr);
1417 unsigned ctdb_addr_to_port(ctdb_sock_addr *addr);
1418 void ctdb_canonicalize_ip(const ctdb_sock_addr *ip, ctdb_sock_addr *cip);
1419
1420 int32_t ctdb_control_recd_ping(struct ctdb_context *ctdb);
1421 int32_t ctdb_control_set_recmaster(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata);
1422
1423 extern int script_log_level;
1424 extern bool fast_start;
1425 extern const char *ctdbd_pidfile;
1426
1427 int32_t ctdb_control_get_event_script_status(struct ctdb_context *ctdb,
1428 uint32_t call_type,
1429 TDB_DATA *outdata);
1430
1431 int ctdb_log_event_script_output(struct ctdb_context *ctdb, char *str, uint16_t len);
1432 int ctdb_ctrl_report_recd_lock_latency(struct ctdb_context *ctdb, struct timeval timeout, double latency);
1433
1434 int32_t ctdb_control_stop_node(struct ctdb_context *ctdb);
1435 int32_t ctdb_control_continue_node(struct ctdb_context *ctdb);
1436
1437 void ctdb_stop_vacuuming(struct ctdb_context *ctdb);
1438 int ctdb_vacuum_init(struct ctdb_db_context *ctdb_db);
1439
1440 int32_t ctdb_control_enable_script(struct ctdb_context *ctdb, TDB_DATA indata);
1441 int32_t ctdb_control_disable_script(struct ctdb_context *ctdb, TDB_DATA indata);
1442
1443 void ctdb_local_node_got_banned(struct ctdb_context *ctdb);
1444 int32_t ctdb_control_set_ban_state(struct ctdb_context *ctdb, TDB_DATA indata);
1445 int32_t ctdb_control_get_ban_state(struct ctdb_context *ctdb, TDB_DATA *outdata);
1446 int32_t ctdb_control_set_db_priority(struct ctdb_context *ctdb, TDB_DATA indata,
1447 uint32_t client_id);
1448 void ctdb_ban_self(struct ctdb_context *ctdb);
1449
1450 int32_t ctdb_control_register_notify(struct ctdb_context *ctdb, uint32_t client_id, TDB_DATA indata);
1451
1452 int32_t ctdb_control_deregister_notify(struct ctdb_context *ctdb, uint32_t client_id, TDB_DATA indata);
1453
1454 struct ctdb_log_state *ctdb_vfork_with_logging(TALLOC_CTX *mem_ctx,
1455 struct ctdb_context *ctdb,
1456 const char *log_prefix,
1457 const char *helper,
1458 int helper_argc,
1459 const char **helper_argv,
1460 void (*logfn)(const char *, uint16_t, void *),
1461 void *logfn_private, pid_t *pid);
1462
1463
1464 int32_t ctdb_control_process_exists(struct ctdb_context *ctdb, pid_t pid);
1465 struct ctdb_client *ctdb_find_client_by_pid(struct ctdb_context *ctdb, pid_t pid);
1466
1467 int32_t ctdb_control_get_db_seqnum(struct ctdb_context *ctdb,
1468 TDB_DATA indata,
1469 TDB_DATA *outdata);
1470
1471 int ctdb_load_persistent_health(struct ctdb_context *ctdb,
1472 struct ctdb_db_context *ctdb_db);
1473 int ctdb_update_persistent_health(struct ctdb_context *ctdb,
1474 struct ctdb_db_context *ctdb_db,
1475 const char *reason,/* NULL means healthy */
1476 int num_healthy_nodes);
1477 int ctdb_recheck_persistent_health(struct ctdb_context *ctdb);
1478
1479 void ctdb_run_notification_script(struct ctdb_context *ctdb, const char *event);
1480
1481 int verify_remote_ip_allocation(struct ctdb_context *ctdb,
1482 struct ctdb_all_public_ips *ips,
1483 uint32_t pnn);
1484 int update_ip_assignment_tree(struct ctdb_context *ctdb,
1485 struct ctdb_public_ip *ip);
1486
1487 int ctdb_init_tevent_logging(struct ctdb_context *ctdb);
1488
1489 int ctdb_statistics_init(struct ctdb_context *ctdb);
1490
1491 int32_t ctdb_control_get_stat_history(struct ctdb_context *ctdb,
1492 struct ctdb_req_control *c,
1493 TDB_DATA *outdata);
1494
1495 int ctdb_deferred_drop_all_ips(struct ctdb_context *ctdb);
1496
1497 int ctdb_process_deferred_attach(struct ctdb_context *ctdb);
1498
1499 /**
1500 * structure to pass to a schedule_for_deletion_control
1501 */
1502 struct ctdb_control_schedule_for_deletion {
1503 uint32_t db_id;
1504 struct ctdb_ltdb_header hdr;
1505 uint32_t keylen;
1506 uint8_t key[1]; /* key[] */
1507 };
1508
1509 int32_t ctdb_control_schedule_for_deletion(struct ctdb_context *ctdb,
1510 TDB_DATA indata);
1511
1512
1513 int32_t ctdb_local_schedule_for_deletion(struct ctdb_db_context *ctdb_db,
1514 const struct ctdb_ltdb_header *hdr,
1515 TDB_DATA key);
1516
1517 void ctdb_local_remove_from_delete_queue(struct ctdb_db_context *ctdb_db,
1518 const struct ctdb_ltdb_header *hdr,
1519 const TDB_DATA key);
1520
1521 struct ctdb_ltdb_header *ctdb_header_from_record_handle(struct ctdb_record_handle *h);
1522
1523 int ctdb_trackingdb_add_pnn(struct ctdb_context *ctdb, TDB_DATA *data, uint32_t pnn);
1524
1525 typedef void (*ctdb_trackingdb_cb)(struct ctdb_context *ctdb, uint32_t pnn, void *private_data);
1526
1527 void ctdb_trackingdb_traverse(struct ctdb_context *ctdb, TDB_DATA data, ctdb_trackingdb_cb cb, void *private_data);
1528
1529 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);
1530
1531 typedef void (*deferred_requeue_fn)(void *call_context, struct ctdb_req_header *hdr);
1532
1533 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);
1534
1535 int ctdb_set_db_readonly(struct ctdb_context *ctdb, struct ctdb_db_context *ctdb_db);
1536
1537 int ctdb_null_func(struct ctdb_call_info *call);
1538
1539 int ctdb_fetch_func(struct ctdb_call_info *call);
1540
1541 int ctdb_fetch_with_header_func(struct ctdb_call_info *call);
1542
1543 int32_t ctdb_control_get_db_statistics(struct ctdb_context *ctdb,
1544 uint32_t db_id,
1545 TDB_DATA *outdata);
1546
1547 int ctdb_set_db_sticky(struct ctdb_context *ctdb, struct ctdb_db_context *ctdb_db);
1548
1549 /*
1550 description for a message to reload all ips via recovery master/daemon
1551 */
1552 struct reloadips_all_reply {
1553 uint32_t pnn;
1554 uint64_t srvid;
1555 };
1556
1557 int32_t ctdb_control_reload_public_ips(struct ctdb_context *ctdb, struct ctdb_req_control *c, bool *async_reply);
1558
1559 int ctdb_start_monitoring_interfaces(struct ctdb_context *ctdb);
1560
1561 /* from server/ctdb_lock.c */
1562 struct lock_request;
1563
1564 int ctdb_lockall_mark_prio(struct ctdb_context *ctdb, uint32_t priority);
1565 int ctdb_lockall_unmark_prio(struct ctdb_context *ctdb, uint32_t priority);
1566
1567 struct lock_request *ctdb_lock_record(TALLOC_CTX *mem_ctx,
1568 struct ctdb_db_context *ctdb_db,
1569 TDB_DATA key,
1570 bool auto_mark,
1571 void (*callback)(void *, bool),
1572 void *private_data);
1573
1574 struct lock_request *ctdb_lock_db(TALLOC_CTX *mem_ctx,
1575 struct ctdb_db_context *ctdb_db,
1576 bool auto_mark,
1577 void (*callback)(void *, bool),
1578 void *private_data);
1579
1580 struct lock_request *ctdb_lock_alldb_prio(TALLOC_CTX *mem_ctx,
1581 struct ctdb_context *ctdb,
1582 uint32_t priority,
1583 bool auto_mark,
1584 void (*callback)(void *, bool),
1585 void *private_data);
1586
1587 struct lock_request *ctdb_lock_alldb(TALLOC_CTX *mem_ctx,
1588 struct ctdb_context *ctdb,
1589 bool auto_mark,
1590 void (*callback)(void *, bool),
1591 void *private_data);
1592
1593 int mkdir_p(const char *dir, int mode);
1594 void mkdir_p_or_die(const char *dir, int mode);
1595
1596 ssize_t sys_read(int fd, void *buf, size_t count);
1597 ssize_t sys_write(int fd, const void *buf, size_t count);
1598
1599 #endif
Samba GIT mirror