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param: Rename variable used for lp_interfaces szInterfaces
[Samba.git] / ctdb / include / ctdb_private.h
blobb95b2c7b84ff0f52bd1419f9bc6eedca4d23e7cf
1 /*
2 ctdb database library
3
4 Copyright (C) Andrew Tridgell 2006
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, see <http://www.gnu.org/licenses/>.
18 */
19
20 #ifndef _CTDB_PRIVATE_H
21 #define _CTDB_PRIVATE_H
22
23 #include "ctdb_client.h"
24 #include <sys/socket.h>
25
26 /*
27 * Structures to support SRVID requests and replies
28 */
29 struct srvid_request {
30 uint32_t pnn;
31 uint64_t srvid;
32 };
33
34 struct srvid_request_data {
35 uint32_t pnn;
36 uint64_t srvid;
37 uint32_t data;
38 };
39
40 /*
41 * pid of the ctdbd daemon
42 */
43 extern pid_t ctdbd_pid;
44
45 /*
46 a tcp connection description
47 also used by tcp_add and tcp_remove controls
48 */
49 struct ctdb_tcp_connection {
50 ctdb_sock_addr src_addr;
51 ctdb_sock_addr dst_addr;
52 };
53
54 /* the wire representation for a tcp tickle array */
55 struct ctdb_tcp_wire_array {
56 uint32_t num;
57 struct ctdb_tcp_connection connections[1];
58 };
59
60 /* the list of tcp tickles used by get/set tcp tickle list */
61 struct ctdb_control_tcp_tickle_list {
62 ctdb_sock_addr addr;
63 struct ctdb_tcp_wire_array tickles;
64 };
65
66 /*
67 array of tcp connections
68 */
69 struct ctdb_tcp_array {
70 uint32_t num;
71 struct ctdb_tcp_connection *connections;
72 };
73
74
75 /* all tunable variables go in here */
76 struct ctdb_tunable {
77 uint32_t max_redirect_count;
78 uint32_t seqnum_interval; /* unit is ms */
79 uint32_t control_timeout;
80 uint32_t traverse_timeout;
81 uint32_t keepalive_interval;
82 uint32_t keepalive_limit;
83 uint32_t recover_timeout;
84 uint32_t recover_interval;
85 uint32_t election_timeout;
86 uint32_t takeover_timeout;
87 uint32_t monitor_interval;
88 uint32_t tickle_update_interval;
89 uint32_t script_timeout;
90 uint32_t script_timeout_count; /* allow dodgy scripts to hang this many times in a row before we mark the node unhealthy */
91 uint32_t script_unhealthy_on_timeout; /* obsolete */
92 uint32_t recovery_grace_period;
93 uint32_t recovery_ban_period;
94 uint32_t database_hash_size;
95 uint32_t database_max_dead;
96 uint32_t rerecovery_timeout;
97 uint32_t enable_bans;
98 uint32_t deterministic_public_ips;
99 uint32_t reclock_ping_period;
100 uint32_t no_ip_failback;
101 uint32_t disable_ip_failover;
102 uint32_t verbose_memory_names;
103 uint32_t recd_ping_timeout;
104 uint32_t recd_ping_failcount;
105 uint32_t log_latency_ms;
106 uint32_t reclock_latency_ms;
107 uint32_t recovery_drop_all_ips;
108 uint32_t verify_recovery_lock;
109 uint32_t vacuum_interval;
110 uint32_t vacuum_max_run_time;
111 uint32_t repack_limit;
112 uint32_t vacuum_limit;
113 uint32_t max_queue_depth_drop_msg;
114 uint32_t use_status_events_for_monitoring;
115 uint32_t allow_unhealthy_db_read;
116 uint32_t stat_history_interval;
117 uint32_t deferred_attach_timeout;
118 uint32_t vacuum_fast_path_count;
119 uint32_t lcp2_public_ip_assignment;
120 uint32_t allow_client_db_attach;
121 uint32_t recover_pdb_by_seqnum;
122 uint32_t deferred_rebalance_on_node_add;
123 uint32_t fetch_collapse;
124 uint32_t hopcount_make_sticky;
125 uint32_t sticky_duration;
126 uint32_t sticky_pindown;
127 uint32_t no_ip_takeover;
128 uint32_t db_record_count_warn;
129 uint32_t db_record_size_warn;
130 uint32_t db_size_warn;
131 uint32_t pulldb_preallocation_size;
132 uint32_t no_ip_host_on_all_disabled;
133 uint32_t samba3_hack;
134 };
135
136 /*
137 an installed ctdb remote call
138 */
139 struct ctdb_registered_call {
140 struct ctdb_registered_call *next, *prev;
141 uint32_t id;
142 ctdb_fn_t fn;
143 };
144
145 /*
146 this address structure might need to be generalised later for some
147 transports
148 */
149 struct ctdb_address {
150 const char *address;
151 int port;
152 };
153
154 /*
155 check that a pnn is valid
156 */
157 #define ctdb_validate_pnn(ctdb, pnn) (((uint32_t)(pnn)) < (ctdb)->num_nodes)
158
159
160 /* called from the queue code when a packet comes in. Called with data==NULL
161 on error */
162 typedef void (*ctdb_queue_cb_fn_t)(uint8_t *data, size_t length,
163 void *private_data);
164
165 /* used for callbacks in ctdb_control requests */
166 typedef void (*ctdb_control_callback_fn_t)(struct ctdb_context *,
167 int32_t status, TDB_DATA data,
168 const char *errormsg,
169 void *private_data);
170 /*
171 structure describing a connected client in the daemon
172 */
173 struct ctdb_client {
174 struct ctdb_context *ctdb;
175 int fd;
176 struct ctdb_queue *queue;
177 uint32_t client_id;
178 pid_t pid;
179 struct ctdb_tcp_list *tcp_list;
180 uint32_t db_id;
181 uint32_t num_persistent_updates;
182 struct ctdb_client_notify_list *notify;
183 };
184
185 struct ctdb_iface;
186
187 /* state associated with a public ip address */
188 struct ctdb_vnn {
189 struct ctdb_vnn *prev, *next;
190
191 struct ctdb_iface *iface;
192 const char **ifaces;
193 ctdb_sock_addr public_address;
194 uint8_t public_netmask_bits;
195
196 /* the node number that is serving this public address, if any.
197 If no node serves this ip it is set to -1 */
198 int32_t pnn;
199
200 /* List of clients to tickle for this public address */
201 struct ctdb_tcp_array *tcp_array;
202
203 /* whether we need to update the other nodes with changes to our list
204 of connected clients */
205 bool tcp_update_needed;
206
207 /* a context to hang sending gratious arp events off */
208 TALLOC_CTX *takeover_ctx;
209
210 struct ctdb_kill_tcp *killtcp;
211
212 /* Set to true any time an update to this VNN is in flight.
213 This helps to avoid races. */
214 bool update_in_flight;
215 };
216
217 /*
218 state associated with one node
219 */
220 struct ctdb_node {
221 struct ctdb_context *ctdb;
222 struct ctdb_address address;
223 const char *name; /* for debug messages */
224 void *private_data; /* private to transport */
225 uint32_t pnn;
226 uint32_t flags;
227
228 /* used by the dead node monitoring */
229 uint32_t dead_count;
230 uint32_t rx_cnt;
231 uint32_t tx_cnt;
232
233 /* used to track node capabilities, is only valid/tracked inside the
234 recovery daemon.
235 */
236 uint32_t capabilities;
237
238 /* a list of controls pending to this node, so we can time them out quickly
239 if the node becomes disconnected */
240 struct daemon_control_state *pending_controls;
241
242 /* used by the recovery daemon when distributing ip addresses
243 across the nodes. it needs to know which public ip's can be handled
244 by each node.
245 */
246 struct ctdb_all_public_ips *known_public_ips;
247 struct ctdb_all_public_ips *available_public_ips;
248 /* used by the recovery dameon to track when a node should be banned */
249 struct ctdb_banning_state *ban_state;
250 };
251
252 /*
253 transport specific methods
254 */
255 struct ctdb_methods {
256 int (*initialise)(struct ctdb_context *); /* initialise transport structures */
257 int (*start)(struct ctdb_context *); /* start the transport */
258 int (*add_node)(struct ctdb_node *); /* setup a new node */
259 int (*connect_node)(struct ctdb_node *); /* connect to node */
260 int (*queue_pkt)(struct ctdb_node *, uint8_t *data, uint32_t length);
261 void *(*allocate_pkt)(TALLOC_CTX *mem_ctx, size_t );
262 void (*shutdown)(struct ctdb_context *); /* shutdown transport */
263 void (*restart)(struct ctdb_node *); /* stop and restart the connection */
264 };
265
266 /*
267 transport calls up to the ctdb layer
268 */
269 struct ctdb_upcalls {
270 /* recv_pkt is called when a packet comes in */
271 void (*recv_pkt)(struct ctdb_context *, uint8_t *data, uint32_t length);
272
273 /* node_dead is called when an attempt to send to a node fails */
274 void (*node_dead)(struct ctdb_node *);
275
276 /* node_connected is called when a connection to a node is established */
277 void (*node_connected)(struct ctdb_node *);
278 };
279
280 /* list of message handlers - needs to be changed to a more efficient data
281 structure so we can find a message handler given a srvid quickly */
282 struct ctdb_message_list_header {
283 struct ctdb_message_list_header *next, *prev;
284 struct ctdb_context *ctdb;
285 uint64_t srvid;
286 struct ctdb_message_list *m;
287 };
288 struct ctdb_message_list {
289 struct ctdb_message_list *next, *prev;
290 struct ctdb_message_list_header *h;
291 ctdb_msg_fn_t message_handler;
292 void *message_private;
293 };
294
295 /* additional data required for the daemon mode */
296 struct ctdb_daemon_data {
297 int sd;
298 char *name;
299 struct ctdb_queue *queue;
300 };
301
302
303 #define CTDB_UPDATE_STAT(ctdb, counter, value) \
304 { \
305 if (value > ctdb->statistics.counter) { \
306 ctdb->statistics.counter = c->hopcount; \
307 } \
308 if (value > ctdb->statistics_current.counter) { \
309 ctdb->statistics_current.counter = c->hopcount; \
310 } \
311 }
312
313 #define CTDB_INCREMENT_STAT(ctdb, counter) \
314 { \
315 ctdb->statistics.counter++; \
316 ctdb->statistics_current.counter++; \
317 }
318
319 #define CTDB_DECREMENT_STAT(ctdb, counter) \
320 { \
321 if (ctdb->statistics.counter > 0) \
322 ctdb->statistics.counter--; \
323 if (ctdb->statistics_current.counter > 0) \
324 ctdb->statistics_current.counter--; \
325 }
326
327 #define CTDB_INCREMENT_DB_STAT(ctdb_db, counter) \
328 { \
329 ctdb_db->statistics.counter++; \
330 }
331
332 #define CTDB_DECREMENT_DB_STAT(ctdb_db, counter) \
333 { \
334 if (ctdb_db->statistics.counter > 0) \
335 ctdb_db->statistics.counter--; \
336 }
337
338 #define CTDB_UPDATE_RECLOCK_LATENCY(ctdb, name, counter, value) \
339 { \
340 if (value > ctdb->statistics.counter.max) \
341 ctdb->statistics.counter.max = value; \
342 if (value > ctdb->statistics_current.counter.max) \
343 ctdb->statistics_current.counter.max = value; \
344 \
345 if (ctdb->statistics.counter.num == 0 || \
346 value < ctdb->statistics.counter.min) \
347 ctdb->statistics.counter.min = value; \
348 if (ctdb->statistics_current.counter.num == 0 || \
349 value < ctdb->statistics_current.counter.min) \
350 ctdb->statistics_current.counter.min = value; \
351 \
352 ctdb->statistics.counter.total += value; \
353 ctdb->statistics_current.counter.total += value; \
354 \
355 ctdb->statistics.counter.num++; \
356 ctdb->statistics_current.counter.num++; \
357 \
358 if (ctdb->tunable.reclock_latency_ms != 0) { \
359 if (value*1000 > ctdb->tunable.reclock_latency_ms) { \
360 DEBUG(DEBUG_ERR, \
361 ("High RECLOCK latency %fs for operation %s\n", \
362 value, name)); \
363 } \
364 } \
365 }
366
367 #define CTDB_UPDATE_DB_LATENCY(ctdb_db, operation, counter, value) \
368 { \
369 if (value > ctdb_db->statistics.counter.max) \
370 ctdb_db->statistics.counter.max = value; \
371 if (ctdb_db->statistics.counter.num == 0 || \
372 value < ctdb_db->statistics.counter.min) \
373 ctdb_db->statistics.counter.min = value; \
374 \
375 ctdb_db->statistics.counter.total += value; \
376 ctdb_db->statistics.counter.num++; \
377 \
378 if (ctdb_db->ctdb->tunable.log_latency_ms != 0) { \
379 if (value*1000 > ctdb_db->ctdb->tunable.log_latency_ms) { \
380 DEBUG(DEBUG_ERR, \
381 ("High latency %.6fs for operation %s on database %s\n",\
382 value, operation, ctdb_db->db_name)); \
383 } \
384 } \
385 }
386
387 #define CTDB_UPDATE_LATENCY(ctdb, db, operation, counter, t) \
388 { \
389 double l = timeval_elapsed(&t); \
390 \
391 if (l > ctdb->statistics.counter.max) \
392 ctdb->statistics.counter.max = l; \
393 if (l > ctdb->statistics_current.counter.max) \
394 ctdb->statistics_current.counter.max = l; \
395 \
396 if (ctdb->statistics.counter.num == 0 || \
397 l < ctdb->statistics.counter.min) \
398 ctdb->statistics.counter.min = l; \
399 if (ctdb->statistics_current.counter.num == 0 || \
400 l < ctdb->statistics_current.counter.min) \
401 ctdb->statistics_current.counter.min = l; \
402 \
403 ctdb->statistics.counter.total += l; \
404 ctdb->statistics_current.counter.total += l; \
405 \
406 ctdb->statistics.counter.num++; \
407 ctdb->statistics_current.counter.num++; \
408 \
409 if (ctdb->tunable.log_latency_ms != 0) { \
410 if (l*1000 > ctdb->tunable.log_latency_ms) { \
411 DEBUG(DEBUG_WARNING, \
412 ("High latency %.6fs for operation %s on database %s\n",\
413 l, operation, db->db_name)); \
414 } \
415 } \
416 }
417
418
419
420 /* a structure that contains the elements required for the write record
421 control
422 */
423 struct ctdb_write_record {
424 uint32_t dbid;
425 uint32_t keylen;
426 uint32_t datalen;
427 unsigned char blob[1];
428 };
429
430 enum ctdb_freeze_mode {CTDB_FREEZE_NONE, CTDB_FREEZE_PENDING, CTDB_FREEZE_FROZEN};
431
432 enum ctdb_runstate {
433 CTDB_RUNSTATE_UNKNOWN,
434 CTDB_RUNSTATE_INIT,
435 CTDB_RUNSTATE_SETUP,
436 CTDB_RUNSTATE_FIRST_RECOVERY,
437 CTDB_RUNSTATE_STARTUP,
438 CTDB_RUNSTATE_RUNNING,
439 CTDB_RUNSTATE_SHUTDOWN,
440 };
441
442 const char *runstate_to_string(enum ctdb_runstate runstate);
443 enum ctdb_runstate runstate_from_string(const char *label);
444 void ctdb_set_runstate(struct ctdb_context *ctdb, enum ctdb_runstate runstate);
445
446 void ctdb_shutdown_sequence(struct ctdb_context *ctdb, int exit_code);
447
448 #define CTDB_MONITORING_ACTIVE 0
449 #define CTDB_MONITORING_DISABLED 1
450
451 #define NUM_DB_PRIORITIES 3
452 /* main state of the ctdb daemon */
453 struct ctdb_context {
454 struct tevent_context *ev;
455 struct timeval ctdbd_start_time;
456 struct timeval last_recovery_started;
457 struct timeval last_recovery_finished;
458 uint32_t recovery_mode;
459 TALLOC_CTX *tickle_update_context;
460 TALLOC_CTX *keepalive_ctx;
461 TALLOC_CTX *check_public_ifaces_ctx;
462 struct ctdb_tunable tunable;
463 enum ctdb_freeze_mode freeze_mode[NUM_DB_PRIORITIES+1];
464 struct ctdb_freeze_handle *freeze_handles[NUM_DB_PRIORITIES+1];
465 bool freeze_transaction_started;
466 uint32_t freeze_transaction_id;
467 struct ctdb_address address;
468 const char *name;
469 const char *db_directory;
470 const char *db_directory_persistent;
471 const char *db_directory_state;
472 struct tdb_wrap *db_persistent_health;
473 uint32_t db_persistent_startup_generation;
474 uint64_t db_persistent_check_errors;
475 uint64_t max_persistent_check_errors;
476 const char *transport;
477 char *recovery_lock_file;
478 int recovery_lock_fd;
479 uint32_t pnn; /* our own pnn */
480 uint32_t num_nodes;
481 uint32_t num_connected;
482 unsigned flags;
483 uint32_t capabilities;
484 struct idr_context *idr;
485 int lastid;
486 struct ctdb_node **nodes; /* array of nodes in the cluster - indexed by vnn */
487 struct ctdb_vnn *vnn; /* list of public ip addresses and interfaces */
488 struct ctdb_vnn *single_ip_vnn; /* a structure for the single ip */
489 struct ctdb_iface *ifaces; /* list of local interfaces */
490 char *err_msg;
491 const struct ctdb_methods *methods; /* transport methods */
492 const struct ctdb_upcalls *upcalls; /* transport upcalls */
493 void *private_data; /* private to transport */
494 struct ctdb_db_context *db_list;
495 struct ctdb_message_list_header *message_list_header;
496 struct tdb_context *message_list_indexdb;
497 struct ctdb_daemon_data daemon;
498 struct ctdb_statistics statistics;
499 struct ctdb_statistics statistics_current;
500 #define MAX_STAT_HISTORY 100
501 struct ctdb_statistics statistics_history[MAX_STAT_HISTORY];
502 struct ctdb_vnn_map *vnn_map;
503 uint32_t num_clients;
504 uint32_t recovery_master;
505 struct ctdb_call_state *pending_calls;
506 struct ctdb_client_ip *client_ip_list;
507 bool do_checkpublicip;
508 struct trbt_tree *server_ids;
509 bool do_setsched;
510 void *saved_scheduler_param;
511 const char *event_script_dir;
512 const char *notification_script;
513 const char *default_public_interface;
514 pid_t ctdbd_pid;
515 pid_t recoverd_pid;
516 pid_t syslogd_pid;
517 enum ctdb_runstate runstate;
518 struct ctdb_monitor_state *monitor;
519 struct ctdb_log_state *log;
520 int start_as_disabled;
521 int start_as_stopped;
522 bool valgrinding;
523 uint32_t event_script_timeouts; /* counting how many consecutive times an eventscript has timedout */
524 uint32_t *recd_ping_count;
525 TALLOC_CTX *recd_ctx; /* a context used to track recoverd monitoring events */
526 TALLOC_CTX *release_ips_ctx; /* a context used to automatically drop all IPs if we fail to recover the node */
527
528 TALLOC_CTX *event_script_ctx;
529 int active_events;
530
531 struct ctdb_event_script_state *current_monitor;
532 struct ctdb_scripts_wire *last_status[CTDB_EVENT_MAX];
533
534 TALLOC_CTX *banning_ctx;
535
536 struct ctdb_vacuum_child_context *vacuumers;
537
538 /* mapping from pid to ctdb_client * */
539 struct ctdb_client_pid_list *client_pids;
540
541 /* used in the recovery daemon to remember the ip allocation */
542 struct trbt_tree *ip_tree;
543
544 /* Used to defer db attach requests while in recovery mode */
545 struct ctdb_deferred_attach_context *deferred_attach;
546
547 /* if we are a child process, do we have a domain socket to send controls on */
548 bool can_send_controls;
549
550 /* list of event script callback functions that are active */
551 struct event_script_callback *script_callbacks;
552
553 struct ctdb_reloadips_handle *reload_ips;
554
555 const char *nodes_file;
556 const char *public_addresses_file;
557 struct trbt_tree *child_processes;
558
559 /* Used for locking record/db/alldb */
560 int lock_num_pending;
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
598 struct ctdb_db_statistics statistics;
599
600 int lock_num_current;
601 };
602
603
604 #define CTDB_NO_MEMORY(ctdb, p) do { if (!(p)) { \
605 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
606 ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
607 return -1; }} while (0)
608
609 #define CTDB_NO_MEMORY_VOID(ctdb, p) do { if (!(p)) { \
610 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
611 ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
612 return; }} while (0)
613
614 #define CTDB_NO_MEMORY_NULL(ctdb, p) do { if (!(p)) { \
615 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
616 ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
617 return NULL; }} while (0)
618
619 #define CTDB_NO_MEMORY_FATAL(ctdb, p) do { if (!(p)) { \
620 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
621 ctdb_fatal(ctdb, "Out of memory in " __location__ ); \
622 }} while (0)
623
624 /*
625 structure passed in set_call control
626 */
627 struct ctdb_control_set_call {
628 uint32_t db_id;
629 ctdb_fn_t fn;
630 uint32_t id;
631 };
632
633 /*
634 struct for kill_tcp control
635 */
636 struct ctdb_control_killtcp {
637 ctdb_sock_addr src_addr;
638 ctdb_sock_addr dst_addr;
639 };
640
641 /*
642 struct holding a ctdb_sock_addr and an interface name,
643 used to add/remove public addresses
644 */
645 struct ctdb_control_ip_iface {
646 ctdb_sock_addr addr;
647 uint32_t mask;
648 uint32_t len;
649 char iface[1];
650 };
651
652 /*
653 struct holding a ctdb_sock_addr and an interface name,
654 used for send_gratious_arp
655 */
656 struct ctdb_control_gratious_arp {
657 ctdb_sock_addr addr;
658 uint32_t mask;
659 uint32_t len;
660 char iface[1];
661 };
662
663 /*
664 persistent store control - update this record on all other nodes
665 */
666 struct ctdb_control_persistent_store {
667 uint32_t db_id;
668 uint32_t len;
669 uint8_t data[1];
670 };
671
672 /*
673 structure used for CTDB_SRVID_NODE_FLAGS_CHANGED
674 */
675 struct ctdb_node_flag_change {
676 uint32_t pnn;
677 uint32_t new_flags;
678 uint32_t old_flags;
679 };
680
681 /*
682 struct for admin setting a ban
683 */
684 struct ctdb_ban_info {
685 uint32_t pnn;
686 uint32_t ban_time;
687 };
688
689 enum call_state {CTDB_CALL_WAIT, CTDB_CALL_DONE, CTDB_CALL_ERROR};
690
691 #define CTDB_LMASTER_ANY 0xffffffff
692
693 /*
694 state of a in-progress ctdb call
695 */
696 struct ctdb_call_state {
697 struct ctdb_call_state *next, *prev;
698 enum call_state state;
699 uint32_t reqid;
700 struct ctdb_req_call *c;
701 struct ctdb_db_context *ctdb_db;
702 const char *errmsg;
703 struct ctdb_call *call;
704 uint32_t generation;
705 struct {
706 void (*fn)(struct ctdb_call_state *);
707 void *private_data;
708 } async;
709 };
710
711
712 /* used for fetch_lock */
713 struct ctdb_fetch_handle {
714 struct ctdb_db_context *ctdb_db;
715 TDB_DATA key;
716 TDB_DATA *data;
717 struct ctdb_ltdb_header header;
718 };
719
720 /* internal prototypes */
721 void ctdb_set_error(struct ctdb_context *ctdb, const char *fmt, ...) PRINTF_ATTRIBUTE(2,3);
722 void ctdb_fatal(struct ctdb_context *ctdb, const char *msg);
723 void ctdb_die(struct ctdb_context *ctdb, const char *msg);
724 void ctdb_external_trace(void);
725 bool ctdb_same_address(struct ctdb_address *a1, struct ctdb_address *a2);
726 int ctdb_parse_address(struct ctdb_context *ctdb,
727 TALLOC_CTX *mem_ctx, const char *str,
728 struct ctdb_address *address);
729 bool ctdb_same_ip(const ctdb_sock_addr *ip1, const ctdb_sock_addr *ip2);
730 bool ctdb_same_sockaddr(const ctdb_sock_addr *ip1, const ctdb_sock_addr *ip2);
731 uint32_t ctdb_hash(const TDB_DATA *key);
732 uint32_t ctdb_hash_string(const char *str);
733 void ctdb_request_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
734 void ctdb_request_dmaster(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
735 void ctdb_request_message(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
736 void ctdb_reply_dmaster(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
737 void ctdb_reply_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
738 void ctdb_reply_error(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
739
740 uint32_t ctdb_lmaster(struct ctdb_context *ctdb, const TDB_DATA *key);
741 int ctdb_ltdb_fetch(struct ctdb_db_context *ctdb_db,
742 TDB_DATA key, struct ctdb_ltdb_header *header,
743 TALLOC_CTX *mem_ctx, TDB_DATA *data);
744 int ctdb_ltdb_store(struct ctdb_db_context *ctdb_db, TDB_DATA key,
745 struct ctdb_ltdb_header *header, TDB_DATA data);
746 int ctdb_ltdb_delete(struct ctdb_db_context *ctdb_db, TDB_DATA key);
747 int ctdb_ltdb_fetch_with_header(struct ctdb_db_context *ctdb_db,
748 TDB_DATA key, struct ctdb_ltdb_header *header,
749 TALLOC_CTX *mem_ctx, TDB_DATA *data);
750 int32_t ctdb_control_start_persistent_update(struct ctdb_context *ctdb,
751 struct ctdb_req_control *c,
752 TDB_DATA recdata);
753 int32_t ctdb_control_cancel_persistent_update(struct ctdb_context *ctdb,
754 struct ctdb_req_control *c,
755 TDB_DATA recdata);
756 void ctdb_queue_packet(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
757 void ctdb_queue_packet_opcode(struct ctdb_context *ctdb, struct ctdb_req_header *hdr, unsigned opcode);
758 int ctdb_ltdb_lock_requeue(struct ctdb_db_context *ctdb_db,
759 TDB_DATA key, struct ctdb_req_header *hdr,
760 void (*recv_pkt)(void *, struct ctdb_req_header *),
761 void *recv_context, bool ignore_generation);
762 int ctdb_ltdb_lock_fetch_requeue(struct ctdb_db_context *ctdb_db,
763 TDB_DATA key, struct ctdb_ltdb_header *header,
764 struct ctdb_req_header *hdr, TDB_DATA *data,
765 void (*recv_pkt)(void *, struct ctdb_req_header *),
766 void *recv_context, bool ignore_generation);
767 void ctdb_input_pkt(struct ctdb_context *ctdb, struct ctdb_req_header *);
768
769 struct ctdb_call_state *ctdb_call_local_send(struct ctdb_db_context *ctdb_db,
770 struct ctdb_call *call,
771 struct ctdb_ltdb_header *header,
772 TDB_DATA *data);
773
774
775 int ctdb_start_daemon(struct ctdb_context *ctdb, bool do_fork,
776 bool use_syslog);
777 struct ctdb_call_state *ctdbd_call_send(struct ctdb_db_context *ctdb_db, struct ctdb_call *call);
778 int ctdbd_call_recv(struct ctdb_call_state *state, struct ctdb_call *call);
779
780 /*
781 queue a packet for sending
782 */
783 int ctdb_queue_send(struct ctdb_queue *queue, uint8_t *data, uint32_t length);
784
785 /*
786 setup the fd used by the queue
787 */
788 int ctdb_queue_set_fd(struct ctdb_queue *queue, int fd);
789
790 /*
791 setup a packet queue on a socket
792 */
793 struct ctdb_queue *ctdb_queue_setup(struct ctdb_context *ctdb,
794 TALLOC_CTX *mem_ctx, int fd, int alignment,
795
796 ctdb_queue_cb_fn_t callback,
797 void *private_data, const char *fmt, ...)
798 PRINTF_ATTRIBUTE(7,8);
799
800 /*
801 allocate a packet for use in client<->daemon communication
802 */
803 struct ctdb_req_header *_ctdbd_allocate_pkt(struct ctdb_context *ctdb,
804 TALLOC_CTX *mem_ctx,
805 enum ctdb_operation operation,
806 size_t length, size_t slength,
807 const char *type);
808 #define ctdbd_allocate_pkt(ctdb, mem_ctx, operation, length, type) \
809 (type *)_ctdbd_allocate_pkt(ctdb, mem_ctx, operation, length, sizeof(type), #type)
810
811 struct ctdb_req_header *_ctdb_transport_allocate(struct ctdb_context *ctdb,
812 TALLOC_CTX *mem_ctx,
813 enum ctdb_operation operation,
814 size_t length, size_t slength,
815 const char *type);
816 #define ctdb_transport_allocate(ctdb, mem_ctx, operation, length, type) \
817 (type *)_ctdb_transport_allocate(ctdb, mem_ctx, operation, length, sizeof(type), #type)
818
819 int ctdb_queue_length(struct ctdb_queue *queue);
820
821 /*
822 lock a record in the ltdb, given a key
823 */
824 int ctdb_ltdb_lock(struct ctdb_db_context *ctdb_db, TDB_DATA key);
825
826 /*
827 unlock a record in the ltdb, given a key
828 */
829 int ctdb_ltdb_unlock(struct ctdb_db_context *ctdb_db, TDB_DATA key);
830
831
832 /*
833 make a ctdb call to the local daemon - async send. Called from client context.
834
835 This constructs a ctdb_call request and queues it for processing.
836 This call never blocks.
837 */
838 struct ctdb_call_state *ctdb_client_call_send(struct ctdb_db_context *ctdb_db,
839 struct ctdb_call *call);
840
841 /*
842 make a recv call to the local ctdb daemon - called from client context
843
844 This is called when the program wants to wait for a ctdb_call to complete and get the
845 results. This call will block unless the call has already completed.
846 */
847 int ctdb_client_call_recv(struct ctdb_call_state *state, struct ctdb_call *call);
848
849 int ctdb_client_send_message(struct ctdb_context *ctdb, uint32_t vnn,
850 uint64_t srvid, TDB_DATA data);
851
852 /*
853 send a ctdb message
854 */
855 int ctdb_daemon_send_message(struct ctdb_context *ctdb, uint32_t pnn,
856 uint64_t srvid, TDB_DATA data);
857
858
859 struct ctdb_call_state *ctdb_daemon_call_send(struct ctdb_db_context *ctdb_db,
860 struct ctdb_call *call);
861
862 int ctdb_daemon_call_recv(struct ctdb_call_state *state, struct ctdb_call *call);
863
864 struct ctdb_call_state *ctdb_daemon_call_send_remote(struct ctdb_db_context *ctdb_db,
865 struct ctdb_call *call,
866 struct ctdb_ltdb_header *header);
867
868 int ctdb_call_local(struct ctdb_db_context *ctdb_db, struct ctdb_call *call,
869 struct ctdb_ltdb_header *header, TALLOC_CTX *mem_ctx,
870 TDB_DATA *data, bool updatetdb);
871
872 #define ctdb_reqid_find(ctdb, reqid, type) (type *)_ctdb_reqid_find(ctdb, reqid, #type, __location__)
873
874 void ctdb_recv_raw_pkt(void *p, uint8_t *data, uint32_t length);
875
876 int ctdb_socket_connect(struct ctdb_context *ctdb);
877 void ctdb_client_read_cb(uint8_t *data, size_t cnt, void *args);
878
879 #define CTDB_BAD_REQID ((uint32_t)-1)
880 uint32_t ctdb_reqid_new(struct ctdb_context *ctdb, void *state);
881 void *_ctdb_reqid_find(struct ctdb_context *ctdb, uint32_t reqid, const char *type, const char *location);
882 void ctdb_reqid_remove(struct ctdb_context *ctdb, uint32_t reqid);
883
884 void ctdb_request_control(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
885 void ctdb_reply_control(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
886
887 int ctdb_daemon_send_control(struct ctdb_context *ctdb, uint32_t destnode,
888 uint64_t srvid, uint32_t opcode, uint32_t client_id, uint32_t flags,
889 TDB_DATA data,
890 ctdb_control_callback_fn_t callback,
891 void *private_data);
892
893 int32_t ctdb_control_db_attach(struct ctdb_context *ctdb, TDB_DATA indata,
894 TDB_DATA *outdata, uint64_t tdb_flags,
895 bool persistent, uint32_t client_id,
896 struct ctdb_req_control *c,
897 bool *async_reply);
898
899 int ctdb_daemon_set_call(struct ctdb_context *ctdb, uint32_t db_id,
900 ctdb_fn_t fn, int id);
901
902 int ctdb_control(struct ctdb_context *ctdb, uint32_t destnode, uint64_t srvid,
903 uint32_t opcode, uint32_t flags, TDB_DATA data,
904 TALLOC_CTX *mem_ctx, TDB_DATA *outdata, int32_t *status,
905 struct timeval *timeout, char **errormsg);
906 int ctdb_control_recv(struct ctdb_context *ctdb,
907 struct ctdb_client_control_state *state,
908 TALLOC_CTX *mem_ctx,
909 TDB_DATA *outdata, int32_t *status, char **errormsg);
910
911 struct ctdb_client_control_state *
912 ctdb_control_send(struct ctdb_context *ctdb,
913 uint32_t destnode, uint64_t srvid,
914 uint32_t opcode, uint32_t flags, TDB_DATA data,
915 TALLOC_CTX *mem_ctx,
916 struct timeval *timeout,
917 char **errormsg);
918
919
920
921
922 #define CHECK_CONTROL_DATA_SIZE(size) do { \
923 if (indata.dsize != size) { \
924 DEBUG(0,(__location__ " Invalid data size in opcode %u. Got %u expected %u\n", \
925 opcode, (unsigned)indata.dsize, (unsigned)size)); \
926 return -1; \
927 } \
928 } while (0)
929
930 #define CHECK_CONTROL_MIN_DATA_SIZE(size) do { \
931 if (indata.dsize < size) { \
932 DEBUG(0,(__location__ " Invalid data size in opcode %u. Got %u expected >= %u\n", \
933 opcode, (unsigned)indata.dsize, (unsigned)size)); \
934 return -1; \
935 } \
936 } while (0)
937
938 int ctdb_control_getvnnmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
939 int ctdb_control_setvnnmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
940 int ctdb_control_getdbmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
941 int ctdb_control_getnodemapv4(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
942 int ctdb_control_getnodemap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
943 int ctdb_control_writerecord(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
944
945
946 /* structure used for pulldb control */
947 struct ctdb_control_pulldb {
948 uint32_t db_id;
949 uint32_t lmaster;
950 };
951
952 /* structure used for sending lists of records */
953 struct ctdb_marshall_buffer {
954 uint32_t db_id;
955 uint32_t count;
956 uint8_t data[1];
957 };
958
959 /*
960 structure for setting a tunable
961 */
962 struct ctdb_control_set_tunable {
963 uint32_t value;
964 uint32_t length;
965 uint8_t name[1];
966 };
967
968 /*
969 structure for getting a tunable
970 */
971 struct ctdb_control_get_tunable {
972 uint32_t length;
973 uint8_t name[1];
974 };
975
976 /*
977 structure for listing tunables
978 */
979 struct ctdb_control_list_tunable {
980 uint32_t length;
981 /* returns a : separated list of tunable names */
982 uint8_t data[1];
983 };
984
985
986 struct ctdb_node_and_flagsv4 {
987 uint32_t pnn;
988 uint32_t flags;
989 struct sockaddr_in sin;
990 };
991
992 struct ctdb_node_mapv4 {
993 uint32_t num;
994 struct ctdb_node_and_flagsv4 nodes[1];
995 };
996
997 struct ctdb_control_wipe_database {
998 uint32_t db_id;
999 uint32_t transaction_id;
1000 };
1001
1002 /*
1003 state of a in-progress ctdb call in client
1004 */
1005 struct ctdb_client_call_state {
1006 enum call_state state;
1007 uint32_t reqid;
1008 struct ctdb_db_context *ctdb_db;
1009 struct ctdb_call *call;
1010 struct {
1011 void (*fn)(struct ctdb_client_call_state *);
1012 void *private_data;
1013 } async;
1014 };
1015
1016
1017 int32_t ctdb_control_traverse_start_ext(struct ctdb_context *ctdb,
1018 TDB_DATA indata,
1019 TDB_DATA *outdata,
1020 uint32_t srcnode,
1021 uint32_t client_id);
1022 int32_t ctdb_control_traverse_start(struct ctdb_context *ctdb, TDB_DATA indata,
1023 TDB_DATA *outdata, uint32_t srcnode, uint32_t client_id);
1024 int32_t ctdb_control_traverse_all(struct ctdb_context *ctdb, TDB_DATA data, TDB_DATA *outdata);
1025 int32_t ctdb_control_traverse_all_ext(struct ctdb_context *ctdb, TDB_DATA data, TDB_DATA *outdata);
1026 int32_t ctdb_control_traverse_data(struct ctdb_context *ctdb, TDB_DATA data, TDB_DATA *outdata);
1027 int32_t ctdb_control_traverse_kill(struct ctdb_context *ctdb, TDB_DATA indata,
1028 TDB_DATA *outdata, uint32_t srcnode);
1029
1030 int ctdb_dispatch_message(struct ctdb_context *ctdb, uint64_t srvid, TDB_DATA data);
1031 bool ctdb_check_message_handler(struct ctdb_context *ctdb, uint64_t srvid);
1032
1033 int daemon_register_message_handler(struct ctdb_context *ctdb, uint32_t client_id, uint64_t srvid);
1034 int ctdb_deregister_message_handler(struct ctdb_context *ctdb, uint64_t srvid, void *private_data);
1035 int daemon_deregister_message_handler(struct ctdb_context *ctdb, uint32_t client_id, uint64_t srvid);
1036 int daemon_check_srvids(struct ctdb_context *ctdb, TDB_DATA indata,
1037 TDB_DATA *outdata);
1038
1039 int32_t ctdb_ltdb_enable_seqnum(struct ctdb_context *ctdb, uint32_t db_id);
1040 int32_t ctdb_ltdb_update_seqnum(struct ctdb_context *ctdb, uint32_t db_id, uint32_t srcnode);
1041
1042 struct ctdb_rec_data *ctdb_marshall_record(TALLOC_CTX *mem_ctx, uint32_t reqid,
1043 TDB_DATA key, struct ctdb_ltdb_header *, TDB_DATA data);
1044
1045 struct ctdb_rec_data *ctdb_marshall_loop_next(struct ctdb_marshall_buffer *m, struct ctdb_rec_data *r,
1046 uint32_t *reqid,
1047 struct ctdb_ltdb_header *header,
1048 TDB_DATA *key, TDB_DATA *data);
1049
1050 int32_t ctdb_control_pull_db(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
1051 int32_t ctdb_control_push_db(struct ctdb_context *ctdb, TDB_DATA indata);
1052
1053 int32_t ctdb_control_set_recmode(struct ctdb_context *ctdb,
1054 struct ctdb_req_control *c,
1055 TDB_DATA indata, bool *async_reply,
1056 const char **errormsg);
1057 void ctdb_request_control_reply(struct ctdb_context *ctdb, struct ctdb_req_control *c,
1058 TDB_DATA *outdata, int32_t status, const char *errormsg);
1059
1060 int32_t ctdb_control_freeze(struct ctdb_context *ctdb, struct ctdb_req_control *c, bool *async_reply);
1061 int32_t ctdb_control_thaw(struct ctdb_context *ctdb, uint32_t priority);
1062
1063 int ctdb_start_recoverd(struct ctdb_context *ctdb);
1064 void ctdb_stop_recoverd(struct ctdb_context *ctdb);
1065
1066 uint32_t ctdb_get_num_active_nodes(struct ctdb_context *ctdb);
1067
1068 void ctdb_disable_monitoring(struct ctdb_context *ctdb);
1069 void ctdb_enable_monitoring(struct ctdb_context *ctdb);
1070 void ctdb_stop_monitoring(struct ctdb_context *ctdb);
1071 void ctdb_wait_for_first_recovery(struct ctdb_context *ctdb);
1072 void ctdb_start_tcp_tickle_update(struct ctdb_context *ctdb);
1073 void ctdb_send_keepalive(struct ctdb_context *ctdb, uint32_t destnode);
1074 void ctdb_start_keepalive(struct ctdb_context *ctdb);
1075 void ctdb_stop_keepalive(struct ctdb_context *ctdb);
1076 int32_t ctdb_run_eventscripts(struct ctdb_context *ctdb, struct ctdb_req_control *c, TDB_DATA data, bool *async_reply);
1077
1078
1079 void ctdb_daemon_cancel_controls(struct ctdb_context *ctdb, struct ctdb_node *node);
1080 void ctdb_call_resend_all(struct ctdb_context *ctdb);
1081 void ctdb_node_dead(struct ctdb_node *node);
1082 void ctdb_node_connected(struct ctdb_node *node);
1083 bool ctdb_blocking_freeze(struct ctdb_context *ctdb);
1084 void ctdb_set_scheduler(struct ctdb_context *ctdb);
1085 void ctdb_restore_scheduler(struct ctdb_context *ctdb);
1086
1087 struct tevent_signal *ctdb_init_sigchld(struct ctdb_context *ctdb);
1088 void ctdb_track_child(struct ctdb_context *ctdb, pid_t pid);
1089 pid_t ctdb_fork(struct ctdb_context *ctdb);
1090 pid_t ctdb_fork_no_free_ringbuffer(struct ctdb_context *ctdb);
1091 void ctdb_set_child_info(TALLOC_CTX *mem_ctx, const char *child_name_fmt, ...);
1092 bool ctdb_is_child_process(void);
1093 int ctdb_kill(struct ctdb_context *ctdb, pid_t pid, int signum);
1094
1095 int32_t ctdb_control_takeover_ip(struct ctdb_context *ctdb,
1096 struct ctdb_req_control *c,
1097 TDB_DATA indata,
1098 bool *async_reply);
1099 int32_t ctdb_control_takeover_ipv4(struct ctdb_context *ctdb,
1100 struct ctdb_req_control *c,
1101 TDB_DATA indata,
1102 bool *async_reply);
1103 int32_t ctdb_control_release_ip(struct ctdb_context *ctdb,
1104 struct ctdb_req_control *c,
1105 TDB_DATA indata,
1106 bool *async_reply);
1107 int32_t ctdb_control_release_ipv4(struct ctdb_context *ctdb,
1108 struct ctdb_req_control *c,
1109 TDB_DATA indata,
1110 bool *async_reply);
1111 int32_t ctdb_control_ipreallocated(struct ctdb_context *ctdb,
1112 struct ctdb_req_control *c,
1113 bool *async_reply);
1114 int32_t ctdb_control_start_recovery(struct ctdb_context *ctdb,
1115 struct ctdb_req_control *c,
1116 bool *async_reply);
1117 int32_t ctdb_control_end_recovery(struct ctdb_context *ctdb,
1118 struct ctdb_req_control *c,
1119 bool *async_reply);
1120
1121 struct ctdb_public_ipv4 {
1122 uint32_t pnn;
1123 struct sockaddr_in sin;
1124 };
1125
1126 int ctdb_ctrl_takeover_ip(struct ctdb_context *ctdb, struct timeval timeout,
1127 uint32_t destnode, struct ctdb_public_ip *ip);
1128 int ctdb_ctrl_release_ip(struct ctdb_context *ctdb, struct timeval timeout,
1129 uint32_t destnode, struct ctdb_public_ip *ip);
1130
1131 struct ctdb_all_public_ipsv4 {
1132 uint32_t num;
1133 struct ctdb_public_ipv4 ips[1];
1134 };
1135
1136 int32_t ctdb_control_get_public_ipsv4(struct ctdb_context *ctdb, struct ctdb_req_control *c, TDB_DATA *outdata);
1137 int32_t ctdb_control_get_public_ips(struct ctdb_context *ctdb, struct ctdb_req_control *c, TDB_DATA *outdata);
1138 int ctdb_ctrl_get_public_ips(struct ctdb_context *ctdb,
1139 struct timeval timeout,
1140 uint32_t destnode,
1141 TALLOC_CTX *mem_ctx,
1142 struct ctdb_all_public_ips **ips);
1143 #define CTDB_PUBLIC_IP_FLAGS_ONLY_AVAILABLE 0x00010000
1144 int ctdb_ctrl_get_public_ips_flags(struct ctdb_context *ctdb,
1145 struct timeval timeout, uint32_t destnode,
1146 TALLOC_CTX *mem_ctx,
1147 uint32_t flags,
1148 struct ctdb_all_public_ips **ips);
1149 int ctdb_ctrl_get_public_ipsv4(struct ctdb_context *ctdb,
1150 struct timeval timeout, uint32_t destnode,
1151 TALLOC_CTX *mem_ctx, struct ctdb_all_public_ips **ips);
1152
1153 struct ctdb_control_iface_info {
1154 char name[CTDB_IFACE_SIZE+2];
1155 uint16_t link_state;
1156 uint32_t references;
1157 };
1158
1159 struct ctdb_control_public_ip_info {
1160 struct ctdb_public_ip ip;
1161 uint32_t active_idx;
1162 uint32_t num;
1163 struct ctdb_control_iface_info ifaces[1];
1164 };
1165
1166 struct ctdb_control_get_ifaces {
1167 uint32_t num;
1168 struct ctdb_control_iface_info ifaces[1];
1169 };
1170
1171 int32_t ctdb_control_get_public_ip_info(struct ctdb_context *ctdb,
1172 struct ctdb_req_control *c,
1173 TDB_DATA indata,
1174 TDB_DATA *outdata);
1175 int32_t ctdb_control_get_ifaces(struct ctdb_context *ctdb,
1176 struct ctdb_req_control *c,
1177 TDB_DATA *outdata);
1178 int32_t ctdb_control_set_iface_link(struct ctdb_context *ctdb,
1179 struct ctdb_req_control *c,
1180 TDB_DATA indata);
1181 int ctdb_ctrl_get_public_ip_info(struct ctdb_context *ctdb,
1182 struct timeval timeout, uint32_t destnode,
1183 TALLOC_CTX *mem_ctx,
1184 const ctdb_sock_addr *addr,
1185 struct ctdb_control_public_ip_info **info);
1186 int ctdb_ctrl_get_ifaces(struct ctdb_context *ctdb,
1187 struct timeval timeout, uint32_t destnode,
1188 TALLOC_CTX *mem_ctx,
1189 struct ctdb_control_get_ifaces **ifaces);
1190 int ctdb_ctrl_set_iface_link(struct ctdb_context *ctdb,
1191 struct timeval timeout, uint32_t destnode,
1192 TALLOC_CTX *mem_ctx,
1193 const struct ctdb_control_iface_info *info);
1194
1195 /* from takeover/system.c */
1196 uint32_t uint16_checksum(uint16_t *data, size_t n);
1197 int ctdb_sys_send_arp(const ctdb_sock_addr *addr, const char *iface);
1198 bool ctdb_sys_have_ip(ctdb_sock_addr *addr);
1199 char *ctdb_sys_find_ifname(ctdb_sock_addr *addr);
1200 bool ctdb_sys_check_iface_exists(const char *iface);
1201 int ctdb_get_peer_pid(const int fd, pid_t *peer_pid);
1202 int ctdb_sys_send_tcp(const ctdb_sock_addr *dest,
1203 const ctdb_sock_addr *src,
1204 uint32_t seq, uint32_t ack, int rst);
1205
1206 /* Details of a byte range lock */
1207 struct ctdb_lock_info {
1208 ino_t inode;
1209 off_t start, end;
1210 bool waiting;
1211 bool read_only;
1212 };
1213
1214 char *ctdb_get_process_name(pid_t pid);
1215 int ctdb_set_process_name(const char *name);
1216 bool ctdb_get_lock_info(pid_t req_pid, struct ctdb_lock_info *lock_info);
1217 bool ctdb_get_blocker_pid(struct ctdb_lock_info *reqlock, pid_t *blocker_pid);
1218
1219 typedef void (*client_async_callback)(struct ctdb_context *ctdb, uint32_t node_pnn, int32_t res, TDB_DATA outdata, void *callback_data);
1220
1221 int ctdb_set_public_addresses(struct ctdb_context *ctdb, bool check_addresses);
1222 int ctdb_set_single_public_ip(struct ctdb_context *ctdb,
1223 const char *iface,
1224 const char *ip);
1225 int ctdb_set_event_script(struct ctdb_context *ctdb, const char *script);
1226 int ctdb_set_notification_script(struct ctdb_context *ctdb, const char *script);
1227 int ctdb_takeover_run(struct ctdb_context *ctdb, struct ctdb_node_map *nodemap,
1228 uint32_t *force_rebalance_nodes,
1229 client_async_callback fail_callback, void *callback_data);
1230
1231 int32_t ctdb_control_tcp_client(struct ctdb_context *ctdb, uint32_t client_id,
1232 TDB_DATA indata);
1233 int32_t ctdb_control_tcp_add(struct ctdb_context *ctdb, TDB_DATA indata, bool tcp_update_needed);
1234 int32_t ctdb_control_tcp_remove(struct ctdb_context *ctdb, TDB_DATA indata);
1235 int32_t ctdb_control_startup(struct ctdb_context *ctdb, uint32_t vnn);
1236 int32_t ctdb_control_kill_tcp(struct ctdb_context *ctdb, TDB_DATA indata);
1237 int32_t ctdb_control_send_gratious_arp(struct ctdb_context *ctdb, TDB_DATA indata);
1238 int32_t ctdb_control_get_tcp_tickle_list(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
1239 int32_t ctdb_control_set_tcp_tickle_list(struct ctdb_context *ctdb, TDB_DATA indata);
1240
1241 void ctdb_takeover_client_destructor_hook(struct ctdb_client *client);
1242 int ctdb_event_script(struct ctdb_context *ctdb, enum ctdb_eventscript_call call);
1243 int ctdb_event_script_args(struct ctdb_context *ctdb, enum ctdb_eventscript_call call,
1244 const char *fmt, ...) PRINTF_ATTRIBUTE(3,4);
1245 int ctdb_event_script_callback(struct ctdb_context *ctdb,
1246 TALLOC_CTX *mem_ctx,
1247 void (*callback)(struct ctdb_context *, int, void *),
1248 void *private_data,
1249 enum ctdb_eventscript_call call,
1250 const char *fmt, ...) PRINTF_ATTRIBUTE(6,7);
1251 void ctdb_release_all_ips(struct ctdb_context *ctdb);
1252
1253 void set_nonblocking(int fd);
1254 void set_close_on_exec(int fd);
1255
1256 bool ctdb_recovery_lock(struct ctdb_context *ctdb, bool keep);
1257
1258 int ctdb_set_recovery_lock_file(struct ctdb_context *ctdb, const char *file);
1259
1260 int32_t ctdb_control_get_tunable(struct ctdb_context *ctdb, TDB_DATA indata,
1261 TDB_DATA *outdata);
1262 int32_t ctdb_control_set_tunable(struct ctdb_context *ctdb, TDB_DATA indata);
1263 int32_t ctdb_control_list_tunables(struct ctdb_context *ctdb, TDB_DATA *outdata);
1264 int32_t ctdb_control_try_delete_records(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
1265 int32_t ctdb_control_receive_records(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
1266 int32_t ctdb_control_add_public_address(struct ctdb_context *ctdb, TDB_DATA indata);
1267 int32_t ctdb_control_del_public_address(struct ctdb_context *ctdb, TDB_DATA indata);
1268
1269 void ctdb_tunables_set_defaults(struct ctdb_context *ctdb);
1270
1271 int32_t ctdb_control_modflags(struct ctdb_context *ctdb, TDB_DATA indata);
1272
1273 int ctdb_ctrl_get_all_tunables(struct ctdb_context *ctdb,
1274 struct timeval timeout,
1275 uint32_t destnode,
1276 struct ctdb_tunable *tunables);
1277
1278 void ctdb_start_freeze(struct ctdb_context *ctdb, uint32_t priority);
1279
1280 bool parse_ip_mask(const char *s, const char *iface, ctdb_sock_addr *addr, unsigned *mask);
1281 bool parse_ip_port(const char *s, ctdb_sock_addr *addr);
1282 bool parse_ip(const char *s, const char *iface, unsigned port, ctdb_sock_addr *addr);
1283 bool parse_ipv4(const char *s, unsigned port, struct sockaddr_in *sin);
1284
1285
1286 int ctdb_sys_open_capture_socket(const char *iface, void **private_data);
1287 int ctdb_sys_close_capture_socket(void *private_data);
1288 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);
1289
1290 int ctdb_ctrl_killtcp(struct ctdb_context *ctdb,
1291 struct timeval timeout,
1292 uint32_t destnode,
1293 struct ctdb_control_killtcp *killtcp);
1294
1295 int ctdb_ctrl_add_public_ip(struct ctdb_context *ctdb,
1296 struct timeval timeout,
1297 uint32_t destnode,
1298 struct ctdb_control_ip_iface *pub);
1299
1300 int ctdb_ctrl_del_public_ip(struct ctdb_context *ctdb,
1301 struct timeval timeout,
1302 uint32_t destnode,
1303 struct ctdb_control_ip_iface *pub);
1304
1305 int ctdb_ctrl_gratious_arp(struct ctdb_context *ctdb,
1306 struct timeval timeout,
1307 uint32_t destnode,
1308 ctdb_sock_addr *addr,
1309 const char *ifname);
1310
1311 int ctdb_ctrl_get_tcp_tickles(struct ctdb_context *ctdb,
1312 struct timeval timeout,
1313 uint32_t destnode,
1314 TALLOC_CTX *mem_ctx,
1315 ctdb_sock_addr *addr,
1316 struct ctdb_control_tcp_tickle_list **list);
1317
1318
1319 int32_t ctdb_control_register_server_id(struct ctdb_context *ctdb,
1320 uint32_t client_id,
1321 TDB_DATA indata);
1322 int32_t ctdb_control_check_server_id(struct ctdb_context *ctdb,
1323 TDB_DATA indata);
1324 int32_t ctdb_control_unregister_server_id(struct ctdb_context *ctdb,
1325 TDB_DATA indata);
1326 int32_t ctdb_control_get_server_id_list(struct ctdb_context *ctdb,
1327 TDB_DATA *outdata);
1328 int32_t ctdb_control_uptime(struct ctdb_context *ctdb,
1329 TDB_DATA *outdata);
1330
1331 int ctdb_attach_databases(struct ctdb_context *ctdb);
1332
1333 int32_t ctdb_control_persistent_store(struct ctdb_context *ctdb,
1334 struct ctdb_req_control *c,
1335 TDB_DATA recdata, bool *async_reply);
1336 int32_t ctdb_control_update_record(struct ctdb_context *ctdb,
1337 struct ctdb_req_control *c, TDB_DATA recdata,
1338 bool *async_reply);
1339 int32_t ctdb_control_trans2_commit(struct ctdb_context *ctdb,
1340 struct ctdb_req_control *c,
1341 TDB_DATA recdata, bool *async_reply);
1342
1343 int32_t ctdb_control_trans3_commit(struct ctdb_context *ctdb,
1344 struct ctdb_req_control *c,
1345 TDB_DATA recdata, bool *async_reply);
1346
1347 void ctdb_persistent_finish_trans3_commits(struct ctdb_context *ctdb);
1348
1349 int32_t ctdb_control_transaction_start(struct ctdb_context *ctdb, uint32_t id);
1350 int32_t ctdb_control_transaction_commit(struct ctdb_context *ctdb, uint32_t id);
1351 int32_t ctdb_control_transaction_cancel(struct ctdb_context *ctdb);
1352 int32_t ctdb_control_wipe_database(struct ctdb_context *ctdb, TDB_DATA indata);
1353 int32_t ctdb_control_db_set_healthy(struct ctdb_context *ctdb, TDB_DATA indata);
1354 int32_t ctdb_control_db_get_health(struct ctdb_context *ctdb,
1355 TDB_DATA indata,
1356 TDB_DATA *outdata);
1357
1358
1359 int ctdb_vacuum(struct ctdb_context *ctdb, int argc, const char **argv);
1360 int ctdb_repack(struct ctdb_context *ctdb, int argc, const char **argv);
1361
1362 void ctdb_block_signal(int signum);
1363 void ctdb_unblock_signal(int signum);
1364 int32_t ctdb_monitoring_mode(struct ctdb_context *ctdb);
1365 bool ctdb_stopped_monitoring(struct ctdb_context *ctdb);
1366 int ctdb_set_child_logging(struct ctdb_context *ctdb);
1367 void ctdb_lockdown_memory(struct ctdb_context *ctdb);
1368
1369 struct client_async_data {
1370 enum ctdb_controls opcode;
1371 bool dont_log_errors;
1372 uint32_t count;
1373 uint32_t fail_count;
1374 client_async_callback callback;
1375 client_async_callback fail_callback;
1376 void *callback_data;
1377 };
1378 void ctdb_client_async_add(struct client_async_data *data, struct ctdb_client_control_state *state);
1379 int ctdb_client_async_wait(struct ctdb_context *ctdb, struct client_async_data *data);
1380 int ctdb_client_async_control(struct ctdb_context *ctdb,
1381 enum ctdb_controls opcode,
1382 uint32_t *nodes,
1383 uint64_t srvid,
1384 struct timeval timeout,
1385 bool dont_log_errors,
1386 TDB_DATA data,
1387 client_async_callback client_callback,
1388 client_async_callback fail_callback,
1389 void *callback_data);
1390
1391 void ctdb_load_nodes_file(struct ctdb_context *ctdb);
1392
1393 int ctdb_control_reload_nodes_file(struct ctdb_context *ctdb, uint32_t opcode);
1394
1395 int32_t ctdb_dump_memory(struct ctdb_context *ctdb, TDB_DATA *outdata);
1396 int32_t ctdb_control_get_capabilities(struct ctdb_context *ctdb, TDB_DATA *outdata);
1397
1398 int32_t ctdb_control_trans2_finished(struct ctdb_context *ctdb,
1399 struct ctdb_req_control *c);
1400 int32_t ctdb_control_trans2_error(struct ctdb_context *ctdb,
1401 struct ctdb_req_control *c);
1402 int32_t ctdb_control_trans2_active(struct ctdb_context *ctdb,
1403 struct ctdb_req_control *c,
1404 uint32_t db_id);
1405
1406 char *ctdb_addr_to_str(ctdb_sock_addr *addr);
1407 unsigned ctdb_addr_to_port(ctdb_sock_addr *addr);
1408 void ctdb_canonicalize_ip(const ctdb_sock_addr *ip, ctdb_sock_addr *cip);
1409
1410 int32_t ctdb_control_recd_ping(struct ctdb_context *ctdb);
1411 int32_t ctdb_control_set_recmaster(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata);
1412
1413 extern int script_log_level;
1414 extern bool fast_start;
1415 extern const char *ctdbd_pidfile;
1416
1417 int32_t ctdb_control_get_event_script_status(struct ctdb_context *ctdb,
1418 uint32_t call_type,
1419 TDB_DATA *outdata);
1420
1421 int ctdb_log_event_script_output(struct ctdb_context *ctdb, char *str, uint16_t len);
1422 int ctdb_ctrl_report_recd_lock_latency(struct ctdb_context *ctdb, struct timeval timeout, double latency);
1423
1424 int32_t ctdb_control_stop_node(struct ctdb_context *ctdb);
1425 int32_t ctdb_control_continue_node(struct ctdb_context *ctdb);
1426
1427 void ctdb_stop_vacuuming(struct ctdb_context *ctdb);
1428 int ctdb_vacuum_init(struct ctdb_db_context *ctdb_db);
1429
1430 int32_t ctdb_control_enable_script(struct ctdb_context *ctdb, TDB_DATA indata);
1431 int32_t ctdb_control_disable_script(struct ctdb_context *ctdb, TDB_DATA indata);
1432
1433 void ctdb_local_node_got_banned(struct ctdb_context *ctdb);
1434 int32_t ctdb_control_set_ban_state(struct ctdb_context *ctdb, TDB_DATA indata);
1435 int32_t ctdb_control_get_ban_state(struct ctdb_context *ctdb, TDB_DATA *outdata);
1436 int32_t ctdb_control_set_db_priority(struct ctdb_context *ctdb, TDB_DATA indata);
1437 void ctdb_ban_self(struct ctdb_context *ctdb);
1438
1439 int32_t ctdb_control_register_notify(struct ctdb_context *ctdb, uint32_t client_id, TDB_DATA indata);
1440
1441 int32_t ctdb_control_deregister_notify(struct ctdb_context *ctdb, uint32_t client_id, TDB_DATA indata);
1442
1443 int start_syslog_daemon(struct ctdb_context *ctdb);
1444
1445 /* Where to send the log messages back to */
1446 struct ctdb_get_log_addr {
1447 uint32_t pnn;
1448 uint64_t srvid;
1449 int32_t level;
1450 };
1451
1452 extern int log_ringbuf_size;
1453
1454 void ctdb_collect_log(struct ctdb_context *ctdb, struct ctdb_get_log_addr *log_addr);
1455 void ctdb_clear_log(struct ctdb_context *ctdb);
1456 int32_t ctdb_control_get_log(struct ctdb_context *ctdb, TDB_DATA addr);
1457 int32_t ctdb_control_clear_log(struct ctdb_context *ctdb);
1458 void ctdb_log_ringbuffer_free(void);
1459
1460 struct ctdb_log_state *ctdb_vfork_with_logging(TALLOC_CTX *mem_ctx,
1461 struct ctdb_context *ctdb,
1462 const char *log_prefix,
1463 const char *helper,
1464 int helper_argc,
1465 const char **helper_argv,
1466 void (*logfn)(const char *, uint16_t, void *),
1467 void *logfn_private, pid_t *pid);
1468
1469
1470 int32_t ctdb_control_process_exists(struct ctdb_context *ctdb, pid_t pid);
1471 struct ctdb_client *ctdb_find_client_by_pid(struct ctdb_context *ctdb, pid_t pid);
1472
1473 int32_t ctdb_control_get_db_seqnum(struct ctdb_context *ctdb,
1474 TDB_DATA indata,
1475 TDB_DATA *outdata);
1476
1477 int ctdb_load_persistent_health(struct ctdb_context *ctdb,
1478 struct ctdb_db_context *ctdb_db);
1479 int ctdb_update_persistent_health(struct ctdb_context *ctdb,
1480 struct ctdb_db_context *ctdb_db,
1481 const char *reason,/* NULL means healthy */
1482 int num_healthy_nodes);
1483 int ctdb_recheck_persistent_health(struct ctdb_context *ctdb);
1484
1485 void ctdb_run_notification_script(struct ctdb_context *ctdb, const char *event);
1486
1487 void ctdb_fault_setup(void);
1488
1489 int verify_remote_ip_allocation(struct ctdb_context *ctdb,
1490 struct ctdb_all_public_ips *ips,
1491 uint32_t pnn);
1492 int update_ip_assignment_tree(struct ctdb_context *ctdb,
1493 struct ctdb_public_ip *ip);
1494
1495 int ctdb_init_tevent_logging(struct ctdb_context *ctdb);
1496
1497 int ctdb_statistics_init(struct ctdb_context *ctdb);
1498
1499 int32_t ctdb_control_get_stat_history(struct ctdb_context *ctdb,
1500 struct ctdb_req_control *c,
1501 TDB_DATA *outdata);
1502
1503 int ctdb_deferred_drop_all_ips(struct ctdb_context *ctdb);
1504
1505 int ctdb_process_deferred_attach(struct ctdb_context *ctdb);
1506
1507 /**
1508 * structure to pass to a schedule_for_deletion_control
1509 */
1510 struct ctdb_control_schedule_for_deletion {
1511 uint32_t db_id;
1512 struct ctdb_ltdb_header hdr;
1513 uint32_t keylen;
1514 uint8_t key[1]; /* key[] */
1515 };
1516
1517 int32_t ctdb_control_schedule_for_deletion(struct ctdb_context *ctdb,
1518 TDB_DATA indata);
1519
1520
1521 int32_t ctdb_local_schedule_for_deletion(struct ctdb_db_context *ctdb_db,
1522 const struct ctdb_ltdb_header *hdr,
1523 TDB_DATA key);
1524
1525 void ctdb_local_remove_from_delete_queue(struct ctdb_db_context *ctdb_db,
1526 const struct ctdb_ltdb_header *hdr,
1527 const TDB_DATA key);
1528
1529 struct ctdb_ltdb_header *ctdb_header_from_record_handle(struct ctdb_record_handle *h);
1530
1531 int ctdb_trackingdb_add_pnn(struct ctdb_context *ctdb, TDB_DATA *data, uint32_t pnn);
1532
1533 typedef void (*ctdb_trackingdb_cb)(struct ctdb_context *ctdb, uint32_t pnn, void *private_data);
1534
1535 void ctdb_trackingdb_traverse(struct ctdb_context *ctdb, TDB_DATA data, ctdb_trackingdb_cb cb, void *private_data);
1536
1537 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);
1538
1539 typedef void (*deferred_requeue_fn)(void *call_context, struct ctdb_req_header *hdr);
1540
1541 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);
1542
1543 int ctdb_set_db_readonly(struct ctdb_context *ctdb, struct ctdb_db_context *ctdb_db);
1544
1545 int ctdb_null_func(struct ctdb_call_info *call);
1546
1547 int ctdb_fetch_func(struct ctdb_call_info *call);
1548
1549 int ctdb_fetch_with_header_func(struct ctdb_call_info *call);
1550
1551 int32_t ctdb_control_get_db_statistics(struct ctdb_context *ctdb,
1552 uint32_t db_id,
1553 TDB_DATA *outdata);
1554
1555 int ctdb_set_db_sticky(struct ctdb_context *ctdb, struct ctdb_db_context *ctdb_db);
1556
1557 /*
1558 description for a message to reload all ips via recovery master/daemon
1559 */
1560 struct reloadips_all_reply {
1561 uint32_t pnn;
1562 uint64_t srvid;
1563 };
1564
1565 int32_t ctdb_control_reload_public_ips(struct ctdb_context *ctdb, struct ctdb_req_control *c, bool *async_reply);
1566
1567 int ctdb_start_monitoring_interfaces(struct ctdb_context *ctdb);
1568
1569 /* from server/ctdb_lock.c */
1570 struct lock_request;
1571
1572 int ctdb_lockall_mark_prio(struct ctdb_context *ctdb, uint32_t priority);
1573 int ctdb_lockall_unmark_prio(struct ctdb_context *ctdb, uint32_t priority);
1574
1575 void ctdb_lock_free_request_context(struct lock_request *lock_req);
1576
1577 struct lock_request *ctdb_lock_record(struct ctdb_db_context *ctdb_db,
1578 TDB_DATA key,
1579 bool auto_mark,
1580 void (*callback)(void *, bool),
1581 void *private_data);
1582
1583 struct lock_request *ctdb_lock_db(struct ctdb_db_context *ctdb_db,
1584 bool auto_mark,
1585 void (*callback)(void *, bool),
1586 void *private_data);
1587
1588 struct lock_request *ctdb_lock_alldb_prio(struct ctdb_context *ctdb,
1589 uint32_t priority,
1590 bool auto_mark,
1591 void (*callback)(void *, bool),
1592 void *private_data);
1593
1594 struct lock_request *ctdb_lock_alldb(struct ctdb_context *ctdb,
1595 bool auto_mark,
1596 void (*callback)(void *, bool),
1597 void *private_data);
1598
1599 int mkdir_p(const char *dir, int mode);
1600 void ctdb_mkdir_p_or_die(struct ctdb_context *ctdb, const char *dir, int mode);
1601
1602 #endif
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