source: vendor/current/ctdb/include/ctdb_private.h

Last change on this file was 989, checked in by Silvan Scherrer, 9 years ago

Samba Server: update vendor to version 4.4.7
File size: 36.8 KB
Line 
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 array of tcp connections
28 */
29struct ctdb_tcp_array {
30 uint32_t num;
31 struct ctdb_connection *connections;
32};
33
34/*
35 an installed ctdb remote call
36*/
37struct ctdb_registered_call {
38 struct ctdb_registered_call *next, *prev;
39 uint32_t id;
40 ctdb_fn_t fn;
41};
42
43/*
44 check that a pnn is valid
45 */
46#define ctdb_validate_pnn(ctdb, pnn) (((uint32_t)(pnn)) < (ctdb)->num_nodes)
47
48
49/* called from the queue code when a packet comes in. Called with data==NULL
50 on error */
51typedef void (*ctdb_queue_cb_fn_t)(uint8_t *data, size_t length,
52 void *private_data);
53
54/* used for callbacks in ctdb_control requests */
55typedef void (*ctdb_control_callback_fn_t)(struct ctdb_context *,
56 int32_t status, TDB_DATA data,
57 const char *errormsg,
58 void *private_data);
59/*
60 structure describing a connected client in the daemon
61 */
62struct ctdb_client {
63 struct ctdb_context *ctdb;
64 int fd;
65 struct ctdb_queue *queue;
66 uint32_t client_id;
67 pid_t pid;
68 struct ctdb_tcp_list *tcp_list;
69 uint32_t db_id;
70 uint32_t num_persistent_updates;
71 struct ctdb_client_notify_list *notify;
72};
73
74/* state associated with a public ip address */
75struct ctdb_vnn {
76 struct ctdb_vnn *prev, *next;
77
78 struct ctdb_interface *iface;
79 const char **ifaces;
80 ctdb_sock_addr public_address;
81 uint8_t public_netmask_bits;
82
83 /* the node number that is serving this public address, if any.
84 If no node serves this ip it is set to -1 */
85 int32_t pnn;
86
87 /* List of clients to tickle for this public address */
88 struct ctdb_tcp_array *tcp_array;
89
90 /* whether we need to update the other nodes with changes to our list
91 of connected clients */
92 bool tcp_update_needed;
93
94 /* a context to hang sending gratious arp events off */
95 TALLOC_CTX *takeover_ctx;
96
97 struct ctdb_kill_tcp *killtcp;
98
99 /* Set to true any time an update to this VNN is in flight.
100 This helps to avoid races. */
101 bool update_in_flight;
102
103 /* If CTDB_CONTROL_DEL_PUBLIC_IP is received for this IP
104 * address then this flag is set. It will be deleted in the
105 * release IP callback. */
106 bool delete_pending;
107};
108
109/*
110 state associated with one node
111*/
112struct ctdb_node {
113 struct ctdb_context *ctdb;
114 ctdb_sock_addr address;
115 const char *name; /* for debug messages */
116 void *private_data; /* private to transport */
117 uint32_t pnn;
118 uint32_t flags;
119
120 /* used by the dead node monitoring */
121 uint32_t dead_count;
122 uint32_t rx_cnt;
123 uint32_t tx_cnt;
124
125 /* a list of controls pending to this node, so we can time them out quickly
126 if the node becomes disconnected */
127 struct daemon_control_state *pending_controls;
128
129 /* used by the recovery dameon to track when a node should be banned */
130 struct ctdb_banning_state *ban_state;
131};
132
133/*
134 transport specific methods
135*/
136struct ctdb_methods {
137 int (*initialise)(struct ctdb_context *); /* initialise transport structures */
138 int (*start)(struct ctdb_context *); /* start the transport */
139 int (*add_node)(struct ctdb_node *); /* setup a new node */
140 int (*connect_node)(struct ctdb_node *); /* connect to node */
141 int (*queue_pkt)(struct ctdb_node *, uint8_t *data, uint32_t length);
142 void *(*allocate_pkt)(TALLOC_CTX *mem_ctx, size_t );
143 void (*shutdown)(struct ctdb_context *); /* shutdown transport */
144 void (*restart)(struct ctdb_node *); /* stop and restart the connection */
145};
146
147/*
148 transport calls up to the ctdb layer
149*/
150struct ctdb_upcalls {
151 /* recv_pkt is called when a packet comes in */
152 void (*recv_pkt)(struct ctdb_context *, uint8_t *data, uint32_t length);
153
154 /* node_dead is called when an attempt to send to a node fails */
155 void (*node_dead)(struct ctdb_node *);
156
157 /* node_connected is called when a connection to a node is established */
158 void (*node_connected)(struct ctdb_node *);
159};
160
161/* additional data required for the daemon mode */
162struct ctdb_daemon_data {
163 int sd;
164 char *name;
165 struct ctdb_queue *queue;
166};
167
168
169#define CTDB_UPDATE_STAT(ctdb, counter, value) \
170 { \
171 if (value > ctdb->statistics.counter) { \
172 ctdb->statistics.counter = c->hopcount; \
173 } \
174 if (value > ctdb->statistics_current.counter) { \
175 ctdb->statistics_current.counter = c->hopcount; \
176 } \
177 }
178
179#define CTDB_INCREMENT_STAT(ctdb, counter) \
180 { \
181 ctdb->statistics.counter++; \
182 ctdb->statistics_current.counter++; \
183 }
184
185#define CTDB_DECREMENT_STAT(ctdb, counter) \
186 { \
187 if (ctdb->statistics.counter > 0) \
188 ctdb->statistics.counter--; \
189 if (ctdb->statistics_current.counter > 0) \
190 ctdb->statistics_current.counter--; \
191 }
192
193#define CTDB_INCREMENT_DB_STAT(ctdb_db, counter) \
194 { \
195 ctdb_db->statistics.counter++; \
196 }
197
198#define CTDB_DECREMENT_DB_STAT(ctdb_db, counter) \
199 { \
200 if (ctdb_db->statistics.counter > 0) \
201 ctdb_db->statistics.counter--; \
202 }
203
204#define CTDB_UPDATE_RECLOCK_LATENCY(ctdb, name, counter, value) \
205 { \
206 if (value > ctdb->statistics.counter.max) \
207 ctdb->statistics.counter.max = value; \
208 if (value > ctdb->statistics_current.counter.max) \
209 ctdb->statistics_current.counter.max = value; \
210 \
211 if (ctdb->statistics.counter.num == 0 || \
212 value < ctdb->statistics.counter.min) \
213 ctdb->statistics.counter.min = value; \
214 if (ctdb->statistics_current.counter.num == 0 || \
215 value < ctdb->statistics_current.counter.min) \
216 ctdb->statistics_current.counter.min = value; \
217 \
218 ctdb->statistics.counter.total += value; \
219 ctdb->statistics_current.counter.total += value; \
220 \
221 ctdb->statistics.counter.num++; \
222 ctdb->statistics_current.counter.num++; \
223 \
224 if (ctdb->tunable.reclock_latency_ms != 0) { \
225 if (value*1000 > ctdb->tunable.reclock_latency_ms) { \
226 DEBUG(DEBUG_ERR, \
227 ("High RECLOCK latency %fs for operation %s\n", \
228 value, name)); \
229 } \
230 } \
231 }
232
233#define CTDB_UPDATE_DB_LATENCY(ctdb_db, operation, counter, value) \
234 { \
235 if (value > ctdb_db->statistics.counter.max) \
236 ctdb_db->statistics.counter.max = value; \
237 if (ctdb_db->statistics.counter.num == 0 || \
238 value < ctdb_db->statistics.counter.min) \
239 ctdb_db->statistics.counter.min = value; \
240 \
241 ctdb_db->statistics.counter.total += value; \
242 ctdb_db->statistics.counter.num++; \
243 \
244 if (ctdb_db->ctdb->tunable.log_latency_ms != 0) { \
245 if (value*1000 > ctdb_db->ctdb->tunable.log_latency_ms) { \
246 DEBUG(DEBUG_ERR, \
247 ("High latency %.6fs for operation %s on database %s\n",\
248 value, operation, ctdb_db->db_name)); \
249 } \
250 } \
251 }
252
253#define CTDB_UPDATE_LATENCY(ctdb, db, operation, counter, t) \
254 { \
255 double l = timeval_elapsed(&t); \
256 \
257 if (l > ctdb->statistics.counter.max) \
258 ctdb->statistics.counter.max = l; \
259 if (l > ctdb->statistics_current.counter.max) \
260 ctdb->statistics_current.counter.max = l; \
261 \
262 if (ctdb->statistics.counter.num == 0 || \
263 l < ctdb->statistics.counter.min) \
264 ctdb->statistics.counter.min = l; \
265 if (ctdb->statistics_current.counter.num == 0 || \
266 l < ctdb->statistics_current.counter.min) \
267 ctdb->statistics_current.counter.min = l; \
268 \
269 ctdb->statistics.counter.total += l; \
270 ctdb->statistics_current.counter.total += l; \
271 \
272 ctdb->statistics.counter.num++; \
273 ctdb->statistics_current.counter.num++; \
274 \
275 if (ctdb->tunable.log_latency_ms != 0) { \
276 if (l*1000 > ctdb->tunable.log_latency_ms) { \
277 DEBUG(DEBUG_WARNING, \
278 ("High latency %.6fs for operation %s on database %s\n",\
279 l, operation, db->db_name)); \
280 } \
281 } \
282 }
283
284
285enum ctdb_freeze_mode {CTDB_FREEZE_NONE, CTDB_FREEZE_PENDING, CTDB_FREEZE_FROZEN};
286
287#define NUM_DB_PRIORITIES 3
288/* main state of the ctdb daemon */
289struct ctdb_context {
290 struct tevent_context *ev;
291 struct timeval ctdbd_start_time;
292 struct timeval last_recovery_started;
293 struct timeval last_recovery_finished;
294 uint32_t recovery_mode;
295 TALLOC_CTX *tickle_update_context;
296 TALLOC_CTX *keepalive_ctx;
297 TALLOC_CTX *check_public_ifaces_ctx;
298 struct ctdb_tunable_list tunable;
299 enum ctdb_freeze_mode freeze_mode[NUM_DB_PRIORITIES+1];
300 struct ctdb_freeze_handle *freeze_handles[NUM_DB_PRIORITIES+1];
301 bool freeze_transaction_started;
302 uint32_t freeze_transaction_id;
303 ctdb_sock_addr *address;
304 const char *name;
305 const char *db_directory;
306 const char *db_directory_persistent;
307 const char *db_directory_state;
308 struct tdb_wrap *db_persistent_health;
309 uint32_t db_persistent_startup_generation;
310 uint64_t db_persistent_check_errors;
311 uint64_t max_persistent_check_errors;
312 const char *transport;
313 char *recovery_lock_file;
314 int recovery_lock_fd;
315 uint32_t pnn; /* our own pnn */
316 uint32_t num_nodes;
317 uint32_t num_connected;
318 unsigned flags;
319 uint32_t capabilities;
320 struct reqid_context *idr;
321 struct ctdb_node **nodes; /* array of nodes in the cluster - indexed by vnn */
322 struct ctdb_vnn *vnn; /* list of public ip addresses and interfaces */
323 struct ctdb_vnn *single_ip_vnn; /* a structure for the single ip */
324 struct ctdb_interface *ifaces; /* list of local interfaces */
325 char *err_msg;
326 const struct ctdb_methods *methods; /* transport methods */
327 const struct ctdb_upcalls *upcalls; /* transport upcalls */
328 void *private_data; /* private to transport */
329 struct ctdb_db_context *db_list;
330 struct srvid_context *srv;
331 struct ctdb_daemon_data daemon;
332 struct ctdb_statistics statistics;
333 struct ctdb_statistics statistics_current;
334#define MAX_STAT_HISTORY 100
335 struct ctdb_statistics statistics_history[MAX_STAT_HISTORY];
336 struct ctdb_vnn_map *vnn_map;
337 uint32_t num_clients;
338 uint32_t recovery_master;
339 struct ctdb_client_ip *client_ip_list;
340 bool do_checkpublicip;
341 struct trbt_tree *server_ids;
342 bool do_setsched;
343 const char *event_script_dir;
344 const char *notification_script;
345 const char *default_public_interface;
346 pid_t ctdbd_pid;
347 pid_t recoverd_pid;
348 enum ctdb_runstate runstate;
349 struct ctdb_monitor_state *monitor;
350 int start_as_disabled;
351 int start_as_stopped;
352 bool valgrinding;
353 uint32_t *recd_ping_count;
354 TALLOC_CTX *recd_ctx; /* a context used to track recoverd monitoring events */
355 TALLOC_CTX *release_ips_ctx; /* a context used to automatically drop all IPs if we fail to recover the node */
356
357 TALLOC_CTX *event_script_ctx;
358 int active_events;
359
360 struct ctdb_event_script_state *current_monitor;
361 struct ctdb_script_list_old *last_status[CTDB_EVENT_MAX];
362
363 TALLOC_CTX *banning_ctx;
364
365 struct ctdb_vacuum_child_context *vacuumers;
366
367 /* mapping from pid to ctdb_client * */
368 struct ctdb_client_pid_list *client_pids;
369
370 /* used in the recovery daemon to remember the ip allocation */
371 struct trbt_tree *ip_tree;
372
373 /* Used to defer db attach requests while in recovery mode */
374 struct ctdb_deferred_attach_context *deferred_attach;
375
376 /* if we are a child process, do we have a domain socket to send controls on */
377 bool can_send_controls;
378
379 /* list of event script callback functions that are active */
380 struct event_script_callback *script_callbacks;
381
382 struct ctdb_reloadips_handle *reload_ips;
383
384 const char *nodes_file;
385 const char *public_addresses_file;
386 struct trbt_tree *child_processes;
387
388 /* Used for locking record/db/alldb */
389 struct lock_context *lock_current;
390 struct lock_context *lock_pending;
391};
392
393struct ctdb_db_context {
394 struct ctdb_db_context *next, *prev;
395 struct ctdb_context *ctdb;
396 uint32_t db_id;
397 uint32_t priority;
398 bool persistent;
399 bool readonly; /* Do we support read-only delegations ? */
400 bool sticky; /* Do we support sticky records ? */
401 const char *db_name;
402 const char *db_path;
403 struct tdb_wrap *ltdb;
404 struct tdb_context *rottdb; /* ReadOnly tracking TDB */
405 struct ctdb_registered_call *calls; /* list of registered calls */
406 uint32_t seqnum;
407 struct tevent_timer *seqnum_update;
408 struct ctdb_traverse_local_handle *traverse;
409 struct ctdb_vacuum_handle *vacuum_handle;
410 char *unhealthy_reason;
411 int pending_requests;
412 struct revokechild_handle *revokechild_active;
413 struct ctdb_persistent_state *persistent_state;
414 struct trbt_tree *delete_queue;
415 struct trbt_tree *sticky_records;
416 int (*ctdb_ltdb_store_fn)(struct ctdb_db_context *ctdb_db,
417 TDB_DATA key,
418 struct ctdb_ltdb_header *header,
419 TDB_DATA data);
420
421 /* used to track which records we are currently fetching
422 so we can avoid sending duplicate fetch requests
423 */
424 struct trbt_tree *deferred_fetch;
425 struct trbt_tree *defer_dmaster;
426
427 struct ctdb_db_statistics_old statistics;
428
429 struct lock_context *lock_current;
430 struct lock_context *lock_pending;
431 int lock_num_current;
432
433 struct ctdb_call_state *pending_calls;
434
435 enum ctdb_freeze_mode freeze_mode;
436 struct ctdb_db_freeze_handle *freeze_handle;
437 bool freeze_transaction_started;
438 uint32_t freeze_transaction_id;
439 uint32_t generation;
440
441 bool push_started;
442 void *push_state;
443};
444
445
446#define CTDB_NO_MEMORY(ctdb, p) do { if (!(p)) { \
447 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
448 ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
449 return -1; }} while (0)
450
451#define CTDB_NO_MEMORY_VOID(ctdb, p) do { if (!(p)) { \
452 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
453 ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
454 return; }} while (0)
455
456#define CTDB_NO_MEMORY_NULL(ctdb, p) do { if (!(p)) { \
457 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
458 ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
459 return NULL; }} while (0)
460
461#define CTDB_NO_MEMORY_FATAL(ctdb, p) do { if (!(p)) { \
462 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
463 ctdb_fatal(ctdb, "Out of memory in " __location__ ); \
464 }} while (0)
465
466
467enum call_state {CTDB_CALL_WAIT, CTDB_CALL_DONE, CTDB_CALL_ERROR};
468
469/*
470 state of a in-progress ctdb call
471*/
472struct ctdb_call_state {
473 struct ctdb_call_state *next, *prev;
474 enum call_state state;
475 uint32_t reqid;
476 struct ctdb_req_call_old *c;
477 struct ctdb_db_context *ctdb_db;
478 const char *errmsg;
479 struct ctdb_call *call;
480 uint32_t generation;
481 struct {
482 void (*fn)(struct ctdb_call_state *);
483 void *private_data;
484 } async;
485};
486
487/* internal prototypes */
488
489#define CHECK_CONTROL_DATA_SIZE(size) do { \
490 if (indata.dsize != size) { \
491 DEBUG(0,(__location__ " Invalid data size in opcode %u. Got %u expected %u\n", \
492 opcode, (unsigned)indata.dsize, (unsigned)size)); \
493 return -1; \
494 } \
495 } while (0)
496
497#define CHECK_CONTROL_MIN_DATA_SIZE(size) do { \
498 if (indata.dsize < size) { \
499 DEBUG(0,(__location__ " Invalid data size in opcode %u. Got %u expected >= %u\n", \
500 opcode, (unsigned)indata.dsize, (unsigned)size)); \
501 return -1; \
502 } \
503 } while (0)
504
505/*
506 state of a in-progress ctdb call in client
507*/
508struct ctdb_client_call_state {
509 enum call_state state;
510 uint32_t reqid;
511 struct ctdb_db_context *ctdb_db;
512 struct ctdb_call *call;
513 struct {
514 void (*fn)(struct ctdb_client_call_state *);
515 void *private_data;
516 } async;
517};
518
519extern int script_log_level;
520extern bool fast_start;
521extern const char *ctdbd_pidfile;
522
523typedef void (*deferred_requeue_fn)(void *call_context, struct ctdb_req_header *hdr);
524
525
526/* from tcp/ and ib/ */
527
528int ctdb_tcp_init(struct ctdb_context *ctdb);
529int ctdb_ibw_init(struct ctdb_context *ctdb);
530
531/* from ctdb_banning.c */
532
533void ctdb_local_node_got_banned(struct ctdb_context *ctdb);
534int32_t ctdb_control_set_ban_state(struct ctdb_context *ctdb, TDB_DATA indata);
535int32_t ctdb_control_get_ban_state(struct ctdb_context *ctdb, TDB_DATA *outdata);
536void ctdb_ban_self(struct ctdb_context *ctdb);
537
538/* from ctdb_call.c */
539
540struct ctdb_db_context *find_ctdb_db(struct ctdb_context *ctdb, uint32_t id);
541
542void ctdb_request_dmaster(struct ctdb_context *ctdb,
543 struct ctdb_req_header *hdr);
544void ctdb_reply_dmaster(struct ctdb_context *ctdb,
545 struct ctdb_req_header *hdr);
546void ctdb_request_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
547void ctdb_reply_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
548void ctdb_reply_error(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
549
550void ctdb_call_resend_db(struct ctdb_db_context *ctdb);
551void ctdb_call_resend_all(struct ctdb_context *ctdb);
552
553struct ctdb_call_state *ctdb_call_local_send(struct ctdb_db_context *ctdb_db,
554 struct ctdb_call *call,
555 struct ctdb_ltdb_header *header,
556 TDB_DATA *data);
557
558struct ctdb_call_state *ctdb_daemon_call_send_remote(
559 struct ctdb_db_context *ctdb_db,
560 struct ctdb_call *call,
561 struct ctdb_ltdb_header *header);
562int ctdb_daemon_call_recv(struct ctdb_call_state *state,
563 struct ctdb_call *call);
564
565void ctdb_send_keepalive(struct ctdb_context *ctdb, uint32_t destnode);
566
567int ctdb_start_revoke_ro_record(struct ctdb_context *ctdb,
568 struct ctdb_db_context *ctdb_db,
569 TDB_DATA key, struct ctdb_ltdb_header *header,
570 TDB_DATA data);
571
572int ctdb_add_revoke_deferred_call(struct ctdb_context *ctdb,
573 struct ctdb_db_context *ctdb_db,
574 TDB_DATA key, struct ctdb_req_header *hdr,
575 deferred_requeue_fn fn, void *call_context);
576
577/* from server/ctdb_control.c */
578
579int32_t ctdb_dump_memory(struct ctdb_context *ctdb, TDB_DATA *outdata);
580
581void ctdb_request_control_reply(struct ctdb_context *ctdb,
582 struct ctdb_req_control_old *c,
583 TDB_DATA *outdata, int32_t status,
584 const char *errormsg);
585
586void ctdb_request_control(struct ctdb_context *ctdb,
587 struct ctdb_req_header *hdr);
588void ctdb_reply_control(struct ctdb_context *ctdb,
589 struct ctdb_req_header *hdr);
590
591int ctdb_daemon_send_control(struct ctdb_context *ctdb, uint32_t destnode,
592 uint64_t srvid, uint32_t opcode,
593 uint32_t client_id, uint32_t flags,
594 TDB_DATA data,
595 ctdb_control_callback_fn_t callback,
596 void *private_data);
597
598/* from server/ctdb_daemon.c */
599
600int daemon_register_message_handler(struct ctdb_context *ctdb,
601 uint32_t client_id, uint64_t srvid);
602int daemon_deregister_message_handler(struct ctdb_context *ctdb,
603 uint32_t client_id, uint64_t srvid);
604int daemon_check_srvids(struct ctdb_context *ctdb, TDB_DATA indata,
605 TDB_DATA *outdata);
606
607int ctdb_start_daemon(struct ctdb_context *ctdb, bool do_fork);
608
609struct ctdb_req_header *_ctdb_transport_allocate(struct ctdb_context *ctdb,
610 TALLOC_CTX *mem_ctx,
611 enum ctdb_operation operation,
612 size_t length, size_t slength,
613 const char *type);
614
615#define ctdb_transport_allocate(ctdb, mem_ctx, operation, length, type) \
616 (type *)_ctdb_transport_allocate(ctdb, mem_ctx, operation, length, \
617 sizeof(type), #type)
618
619void ctdb_daemon_cancel_controls(struct ctdb_context *ctdb,
620 struct ctdb_node *node);
621
622int ctdb_daemon_set_call(struct ctdb_context *ctdb, uint32_t db_id,
623 ctdb_fn_t fn, int id);
624
625int ctdb_daemon_send_message(struct ctdb_context *ctdb, uint32_t pnn,
626 uint64_t srvid, TDB_DATA data);
627
628int32_t ctdb_control_register_notify(struct ctdb_context *ctdb,
629 uint32_t client_id, TDB_DATA indata);
630int32_t ctdb_control_deregister_notify(struct ctdb_context *ctdb,
631 uint32_t client_id, TDB_DATA indata);
632
633struct ctdb_client *ctdb_find_client_by_pid(struct ctdb_context *ctdb,
634 pid_t pid);
635
636int32_t ctdb_control_process_exists(struct ctdb_context *ctdb, pid_t pid);
637
638int ctdb_control_getnodesfile(struct ctdb_context *ctdb, uint32_t opcode,
639 TDB_DATA indata, TDB_DATA *outdata);
640
641void ctdb_shutdown_sequence(struct ctdb_context *ctdb, int exit_code);
642
643int switch_from_server_to_client(struct ctdb_context *ctdb,
644 const char *fmt, ...);
645
646/* From server/ctdb_fork.c */
647
648void ctdb_set_child_info(TALLOC_CTX *mem_ctx, const char *child_name_fmt, ...);
649
650void ctdb_track_child(struct ctdb_context *ctdb, pid_t pid);
651
652pid_t ctdb_fork(struct ctdb_context *ctdb);
653
654struct tevent_signal *ctdb_init_sigchld(struct ctdb_context *ctdb);
655
656int ctdb_kill(struct ctdb_context *ctdb, pid_t pid, int signum);
657
658/* from server/ctdb_freeze.c */
659
660int32_t ctdb_control_db_freeze(struct ctdb_context *ctdb,
661 struct ctdb_req_control_old *c,
662 uint32_t db_id, bool *async_reply);
663int32_t ctdb_control_db_thaw(struct ctdb_context *ctdb, uint32_t db_id);
664
665int32_t ctdb_control_freeze(struct ctdb_context *ctdb,
666 struct ctdb_req_control_old *c, bool *async_reply);
667int32_t ctdb_control_thaw(struct ctdb_context *ctdb, uint32_t priority,
668 bool check_recmode);
669
670bool ctdb_blocking_freeze(struct ctdb_context *ctdb);
671
672int32_t ctdb_control_db_transaction_start(struct ctdb_context *ctdb,
673 TDB_DATA indata);
674int32_t ctdb_control_db_transaction_cancel(struct ctdb_context *ctdb,
675 TDB_DATA indata);
676int32_t ctdb_control_db_transaction_commit(struct ctdb_context *ctdb,
677 TDB_DATA indata);
678
679int32_t ctdb_control_transaction_start(struct ctdb_context *ctdb, uint32_t id);
680int32_t ctdb_control_transaction_cancel(struct ctdb_context *ctdb);
681int32_t ctdb_control_transaction_commit(struct ctdb_context *ctdb, uint32_t id);
682
683int32_t ctdb_control_wipe_database(struct ctdb_context *ctdb, TDB_DATA indata);
684
685bool ctdb_db_frozen(struct ctdb_db_context *ctdb_db);
686bool ctdb_db_prio_frozen(struct ctdb_context *ctdb, uint32_t priority);
687bool ctdb_db_all_frozen(struct ctdb_context *ctdb);
688
689/* from server/ctdb_keepalive.c */
690
691void ctdb_start_keepalive(struct ctdb_context *ctdb);
692void ctdb_stop_keepalive(struct ctdb_context *ctdb);
693
694/* from server/ctdb_lock.c */
695
696struct lock_request;
697
698typedef int (*ctdb_db_handler_t)(struct ctdb_db_context *ctdb_db,
699 void *private_data);
700
701int ctdb_db_prio_iterator(struct ctdb_context *ctdb, uint32_t priority,
702 ctdb_db_handler_t handler, void *private_data);
703int ctdb_db_iterator(struct ctdb_context *ctdb, ctdb_db_handler_t handler,
704 void *private_data);
705
706int ctdb_lockdb_mark(struct ctdb_db_context *ctdb_db);
707int ctdb_lockall_mark_prio(struct ctdb_context *ctdb, uint32_t priority);
708
709int ctdb_lockdb_unmark(struct ctdb_db_context *ctdb_db);
710int ctdb_lockall_unmark_prio(struct ctdb_context *ctdb, uint32_t priority);
711
712struct lock_request *ctdb_lock_record(TALLOC_CTX *mem_ctx,
713 struct ctdb_db_context *ctdb_db,
714 TDB_DATA key,
715 bool auto_mark,
716 void (*callback)(void *, bool),
717 void *private_data);
718
719struct lock_request *ctdb_lock_db(TALLOC_CTX *mem_ctx,
720 struct ctdb_db_context *ctdb_db,
721 bool auto_mark,
722 void (*callback)(void *, bool),
723 void *private_data);
724
725struct lock_request *ctdb_lock_alldb_prio(TALLOC_CTX *mem_ctx,
726 struct ctdb_context *ctdb,
727 uint32_t priority,
728 bool auto_mark,
729 void (*callback)(void *, bool),
730 void *private_data);
731
732struct lock_request *ctdb_lock_alldb(TALLOC_CTX *mem_ctx,
733 struct ctdb_context *ctdb,
734 bool auto_mark,
735 void (*callback)(void *, bool),
736 void *private_data);
737
738/* from ctdb_logging.c */
739
740extern const char *debug_extra;
741
742typedef int (*ctdb_log_setup_fn_t)(TALLOC_CTX *mem_ctx,
743 const char *logging,
744 const char *app_name);
745
746void ctdb_log_register_backend(const char *prefix, ctdb_log_setup_fn_t init);
747
748bool ctdb_logging_init(TALLOC_CTX *mem_ctx, const char *logging);
749
750struct ctdb_log_state *ctdb_vfork_with_logging(TALLOC_CTX *mem_ctx,
751 struct ctdb_context *ctdb,
752 const char *log_prefix,
753 const char *helper,
754 int helper_argc,
755 const char **helper_argv,
756 void (*logfn)(const char *,
757 uint16_t, void *),
758 void *logfn_private, pid_t *pid);
759
760int ctdb_set_child_logging(struct ctdb_context *ctdb);
761int ctdb_init_tevent_logging(struct ctdb_context *ctdb);
762
763/* from ctdb_logging_file.c */
764
765void ctdb_log_init_file(void);
766
767/* from ctdb_logging_syslog.c */
768
769void ctdb_log_init_syslog(void);
770
771/* from ctdb_ltdb_server.c */
772
773int ctdb_ltdb_lock_requeue(struct ctdb_db_context *ctdb_db,
774 TDB_DATA key, struct ctdb_req_header *hdr,
775 void (*recv_pkt)(void *, struct ctdb_req_header *),
776 void *recv_context, bool ignore_generation);
777
778int ctdb_ltdb_lock_fetch_requeue(struct ctdb_db_context *ctdb_db,
779 TDB_DATA key, struct ctdb_ltdb_header *header,
780 struct ctdb_req_header *hdr, TDB_DATA *data,
781 void (*recv_pkt)(void *, struct ctdb_req_header *),
782 void *recv_context, bool ignore_generation);
783
784int ctdb_load_persistent_health(struct ctdb_context *ctdb,
785 struct ctdb_db_context *ctdb_db);
786int ctdb_update_persistent_health(struct ctdb_context *ctdb,
787 struct ctdb_db_context *ctdb_db,
788 const char *reason,/* NULL means healthy */
789 int num_healthy_nodes);
790int ctdb_recheck_persistent_health(struct ctdb_context *ctdb);
791
792int32_t ctdb_control_db_set_healthy(struct ctdb_context *ctdb,
793 TDB_DATA indata);
794int32_t ctdb_control_db_get_health(struct ctdb_context *ctdb,
795 TDB_DATA indata, TDB_DATA *outdata);
796
797int ctdb_set_db_readonly(struct ctdb_context *ctdb,
798 struct ctdb_db_context *ctdb_db);
799
800int ctdb_process_deferred_attach(struct ctdb_context *ctdb);
801
802int32_t ctdb_control_db_attach(struct ctdb_context *ctdb, TDB_DATA indata,
803 TDB_DATA *outdata, uint64_t tdb_flags,
804 bool persistent, uint32_t client_id,
805 struct ctdb_req_control_old *c,
806 bool *async_reply);
807int32_t ctdb_control_db_detach(struct ctdb_context *ctdb, TDB_DATA indata,
808 uint32_t client_id);
809
810int ctdb_attach_databases(struct ctdb_context *ctdb);
811
812int32_t ctdb_ltdb_update_seqnum(struct ctdb_context *ctdb, uint32_t db_id,
813 uint32_t srcnode);
814int32_t ctdb_ltdb_enable_seqnum(struct ctdb_context *ctdb, uint32_t db_id);
815
816int32_t ctdb_control_set_db_priority(struct ctdb_context *ctdb, TDB_DATA indata,
817 uint32_t client_id);
818
819int ctdb_set_db_sticky(struct ctdb_context *ctdb,
820 struct ctdb_db_context *ctdb_db);
821
822void ctdb_db_statistics_reset(struct ctdb_db_context *ctdb_db);
823
824int32_t ctdb_control_get_db_statistics(struct ctdb_context *ctdb,
825 uint32_t db_id, TDB_DATA *outdata);
826
827/* from ctdb_monitor.c */
828
829int ctdb_set_notification_script(struct ctdb_context *ctdb, const char *script);
830void ctdb_run_notification_script(struct ctdb_context *ctdb, const char *event);
831
832void ctdb_disable_monitoring(struct ctdb_context *ctdb);
833void ctdb_enable_monitoring(struct ctdb_context *ctdb);
834void ctdb_stop_monitoring(struct ctdb_context *ctdb);
835
836void ctdb_wait_for_first_recovery(struct ctdb_context *ctdb);
837
838int32_t ctdb_control_modflags(struct ctdb_context *ctdb, TDB_DATA indata);
839
840int32_t ctdb_monitoring_mode(struct ctdb_context *ctdb);
841bool ctdb_stopped_monitoring(struct ctdb_context *ctdb);
842
843/* from ctdb_persistent.c */
844
845void ctdb_persistent_finish_trans3_commits(struct ctdb_context *ctdb);
846
847int32_t ctdb_control_trans3_commit(struct ctdb_context *ctdb,
848 struct ctdb_req_control_old *c,
849 TDB_DATA recdata, bool *async_reply);
850
851int32_t ctdb_control_start_persistent_update(struct ctdb_context *ctdb,
852 struct ctdb_req_control_old *c,
853 TDB_DATA recdata);
854int32_t ctdb_control_cancel_persistent_update(struct ctdb_context *ctdb,
855 struct ctdb_req_control_old *c,
856 TDB_DATA recdata);
857
858int32_t ctdb_control_get_db_seqnum(struct ctdb_context *ctdb,
859 TDB_DATA indata, TDB_DATA *outdata);
860
861/* from ctdb_recover.c */
862
863int ctdb_control_getvnnmap(struct ctdb_context *ctdb, uint32_t opcode,
864 TDB_DATA indata, TDB_DATA *outdata);
865int ctdb_control_setvnnmap(struct ctdb_context *ctdb, uint32_t opcode,
866 TDB_DATA indata, TDB_DATA *outdata);
867
868int ctdb_control_getdbmap(struct ctdb_context *ctdb, uint32_t opcode,
869 TDB_DATA indata, TDB_DATA *outdata);
870int ctdb_control_getnodemap(struct ctdb_context *ctdb, uint32_t opcode,
871 TDB_DATA indata, TDB_DATA *outdata);
872
873int ctdb_control_reload_nodes_file(struct ctdb_context *ctdb, uint32_t opcode);
874
875int32_t ctdb_control_pull_db(struct ctdb_context *ctdb, TDB_DATA indata,
876 TDB_DATA *outdata);
877int32_t ctdb_control_push_db(struct ctdb_context *ctdb, TDB_DATA indata);
878
879int32_t ctdb_control_db_pull(struct ctdb_context *ctdb,
880 struct ctdb_req_control_old *c,
881 TDB_DATA indata, TDB_DATA *outdata);
882int32_t ctdb_control_db_push_start(struct ctdb_context *ctdb,
883 TDB_DATA indata);
884int32_t ctdb_control_db_push_confirm(struct ctdb_context *ctdb,
885 TDB_DATA indata, TDB_DATA *outdata);
886
887int ctdb_deferred_drop_all_ips(struct ctdb_context *ctdb);
888
889int32_t ctdb_control_set_recmode(struct ctdb_context *ctdb,
890 struct ctdb_req_control_old *c,
891 TDB_DATA indata, bool *async_reply,
892 const char **errormsg);
893
894bool ctdb_recovery_have_lock(struct ctdb_context *ctdb);
895bool ctdb_recovery_lock(struct ctdb_context *ctdb);
896void ctdb_recovery_unlock(struct ctdb_context *ctdb);
897
898int32_t ctdb_control_end_recovery(struct ctdb_context *ctdb,
899 struct ctdb_req_control_old *c,
900 bool *async_reply);
901int32_t ctdb_control_start_recovery(struct ctdb_context *ctdb,
902 struct ctdb_req_control_old *c,
903 bool *async_reply);
904
905int32_t ctdb_control_try_delete_records(struct ctdb_context *ctdb,
906 TDB_DATA indata, TDB_DATA *outdata);
907int32_t ctdb_control_receive_records(struct ctdb_context *ctdb,
908 TDB_DATA indata, TDB_DATA *outdata);
909
910int32_t ctdb_control_get_capabilities(struct ctdb_context *ctdb,
911 TDB_DATA *outdata);
912
913int32_t ctdb_control_recd_ping(struct ctdb_context *ctdb);
914int32_t ctdb_control_set_recmaster(struct ctdb_context *ctdb,
915 uint32_t opcode, TDB_DATA indata);
916
917int32_t ctdb_control_stop_node(struct ctdb_context *ctdb);
918int32_t ctdb_control_continue_node(struct ctdb_context *ctdb);
919
920/* from ctdb_recoverd.c */
921
922int ctdb_start_recoverd(struct ctdb_context *ctdb);
923void ctdb_stop_recoverd(struct ctdb_context *ctdb);
924
925/* from ctdb_server.c */
926
927int ctdb_set_transport(struct ctdb_context *ctdb, const char *transport);
928
929int ctdb_ip_to_nodeid(struct ctdb_context *ctdb, const ctdb_sock_addr *nodeip);
930
931int ctdb_set_recovery_lock_file(struct ctdb_context *ctdb, const char *file);
932
933void ctdb_load_nodes_file(struct ctdb_context *ctdb);
934
935int ctdb_set_address(struct ctdb_context *ctdb, const char *address);
936
937uint32_t ctdb_get_num_active_nodes(struct ctdb_context *ctdb);
938
939void ctdb_input_pkt(struct ctdb_context *ctdb, struct ctdb_req_header *);
940
941void ctdb_node_dead(struct ctdb_node *node);
942void ctdb_node_connected(struct ctdb_node *node);
943
944void ctdb_queue_packet(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
945void ctdb_queue_packet_opcode(struct ctdb_context *ctdb,
946 struct ctdb_req_header *hdr, unsigned opcode);
947
948/* from ctdb_serverids.c */
949
950int32_t ctdb_control_register_server_id(struct ctdb_context *ctdb,
951 uint32_t client_id, TDB_DATA indata);
952int32_t ctdb_control_check_server_id(struct ctdb_context *ctdb,
953 TDB_DATA indata);
954int32_t ctdb_control_unregister_server_id(struct ctdb_context *ctdb,
955 TDB_DATA indata);
956int32_t ctdb_control_get_server_id_list(struct ctdb_context *ctdb,
957 TDB_DATA *outdata);
958
959/* from ctdb_statistics.c */
960
961int ctdb_statistics_init(struct ctdb_context *ctdb);
962
963int32_t ctdb_control_get_stat_history(struct ctdb_context *ctdb,
964 struct ctdb_req_control_old *c,
965 TDB_DATA *outdata);
966
967/* from ctdb_takeover.c */
968
969int32_t ctdb_control_takeover_ip(struct ctdb_context *ctdb,
970 struct ctdb_req_control_old *c,
971 TDB_DATA indata,
972 bool *async_reply);
973int32_t ctdb_control_release_ip(struct ctdb_context *ctdb,
974 struct ctdb_req_control_old *c,
975 TDB_DATA indata,
976 bool *async_reply);
977int32_t ctdb_control_ipreallocated(struct ctdb_context *ctdb,
978 struct ctdb_req_control_old *c,
979 bool *async_reply);
980
981int ctdb_set_public_addresses(struct ctdb_context *ctdb, bool check_addresses);
982int ctdb_set_single_public_ip(struct ctdb_context *ctdb, const char *iface,
983 const char *ip);
984
985int ctdb_takeover_run(struct ctdb_context *ctdb, struct ctdb_node_map_old *nodemap,
986 uint32_t *force_rebalance_nodes,
987 client_async_callback fail_callback, void *callback_data);
988
989int32_t ctdb_control_tcp_client(struct ctdb_context *ctdb, uint32_t client_id,
990 TDB_DATA indata);
991int32_t ctdb_control_tcp_add(struct ctdb_context *ctdb, TDB_DATA indata,
992 bool tcp_update_needed);
993int32_t ctdb_control_tcp_remove(struct ctdb_context *ctdb, TDB_DATA indata);
994int32_t ctdb_control_startup(struct ctdb_context *ctdb, uint32_t vnn);
995
996void ctdb_takeover_client_destructor_hook(struct ctdb_client *client);
997
998void ctdb_release_all_ips(struct ctdb_context *ctdb);
999
1000int32_t ctdb_control_get_public_ips(struct ctdb_context *ctdb,
1001 struct ctdb_req_control_old *c,
1002 TDB_DATA *outdata);
1003int32_t ctdb_control_get_public_ip_info(struct ctdb_context *ctdb,
1004 struct ctdb_req_control_old *c,
1005 TDB_DATA indata, TDB_DATA *outdata);
1006
1007int32_t ctdb_control_get_ifaces(struct ctdb_context *ctdb,
1008 struct ctdb_req_control_old *c,
1009 TDB_DATA *outdata);
1010int32_t ctdb_control_set_iface_link(struct ctdb_context *ctdb,
1011 struct ctdb_req_control_old *c,
1012 TDB_DATA indata);
1013
1014int32_t ctdb_control_kill_tcp(struct ctdb_context *ctdb, TDB_DATA indata);
1015int32_t ctdb_control_set_tcp_tickle_list(struct ctdb_context *ctdb,
1016 TDB_DATA indata);
1017int32_t ctdb_control_get_tcp_tickle_list(struct ctdb_context *ctdb,
1018 TDB_DATA indata, TDB_DATA *outdata);
1019
1020void ctdb_start_tcp_tickle_update(struct ctdb_context *ctdb);
1021
1022int32_t ctdb_control_send_gratious_arp(struct ctdb_context *ctdb,
1023 TDB_DATA indata);
1024
1025int32_t ctdb_control_add_public_address(struct ctdb_context *ctdb,
1026 TDB_DATA indata);
1027int32_t ctdb_control_del_public_address(struct ctdb_context *ctdb,
1028 struct ctdb_req_control_old *c,
1029 TDB_DATA recdata, bool *async_reply);
1030
1031int update_ip_assignment_tree(struct ctdb_context *ctdb,
1032 struct ctdb_public_ip *ip);
1033void clear_ip_assignment_tree(struct ctdb_context *ctdb);
1034
1035int32_t ctdb_control_reload_public_ips(struct ctdb_context *ctdb,
1036 struct ctdb_req_control_old *c,
1037 bool *async_reply);
1038
1039/* from ctdb_traverse.c */
1040
1041int32_t ctdb_control_traverse_all_ext(struct ctdb_context *ctdb,
1042 TDB_DATA data, TDB_DATA *outdata);
1043int32_t ctdb_control_traverse_all(struct ctdb_context *ctdb,
1044 TDB_DATA data, TDB_DATA *outdata);
1045int32_t ctdb_control_traverse_data(struct ctdb_context *ctdb,
1046 TDB_DATA data, TDB_DATA *outdata);
1047int32_t ctdb_control_traverse_kill(struct ctdb_context *ctdb, TDB_DATA indata,
1048 TDB_DATA *outdata, uint32_t srcnode);
1049
1050int32_t ctdb_control_traverse_start_ext(struct ctdb_context *ctdb,
1051 TDB_DATA indata, TDB_DATA *outdata,
1052 uint32_t srcnode, uint32_t client_id);
1053int32_t ctdb_control_traverse_start(struct ctdb_context *ctdb,
1054 TDB_DATA indata, TDB_DATA *outdata,
1055 uint32_t srcnode, uint32_t client_id);
1056
1057/* from ctdb_tunables.c */
1058
1059void ctdb_tunables_set_defaults(struct ctdb_context *ctdb);
1060
1061int32_t ctdb_control_get_tunable(struct ctdb_context *ctdb, TDB_DATA indata,
1062 TDB_DATA *outdata);
1063int32_t ctdb_control_set_tunable(struct ctdb_context *ctdb, TDB_DATA indata);
1064int32_t ctdb_control_list_tunables(struct ctdb_context *ctdb,
1065 TDB_DATA *outdata);
1066
1067/* from ctdb_update_record.c */
1068
1069int32_t ctdb_control_update_record(struct ctdb_context *ctdb,
1070 struct ctdb_req_control_old *c,
1071 TDB_DATA recdata, bool *async_reply);
1072
1073/* from ctdb_uptime.c */
1074
1075int32_t ctdb_control_uptime(struct ctdb_context *ctdb, TDB_DATA *outdata);
1076
1077/* from ctdb_vacuum.c */
1078
1079void ctdb_stop_vacuuming(struct ctdb_context *ctdb);
1080int ctdb_vacuum_init(struct ctdb_db_context *ctdb_db);
1081
1082int32_t ctdb_control_schedule_for_deletion(struct ctdb_context *ctdb,
1083 TDB_DATA indata);
1084int32_t ctdb_local_schedule_for_deletion(struct ctdb_db_context *ctdb_db,
1085 const struct ctdb_ltdb_header *hdr,
1086 TDB_DATA key);
1087
1088void ctdb_local_remove_from_delete_queue(struct ctdb_db_context *ctdb_db,
1089 const struct ctdb_ltdb_header *hdr,
1090 const TDB_DATA key);
1091
1092/* from eventscript.c */
1093
1094int32_t ctdb_control_get_event_script_status(struct ctdb_context *ctdb,
1095 uint32_t call_type,
1096 TDB_DATA *outdata);
1097
1098int ctdb_event_script_callback(struct ctdb_context *ctdb,
1099 TALLOC_CTX *mem_ctx,
1100 void (*callback)(struct ctdb_context *,
1101 int, void *),
1102 void *private_data,
1103 enum ctdb_event call,
1104 const char *fmt, ...) PRINTF_ATTRIBUTE(6,7);
1105
1106int ctdb_event_script_args(struct ctdb_context *ctdb,
1107 enum ctdb_event call,
1108 const char *fmt, ...) PRINTF_ATTRIBUTE(3,4);
1109
1110int ctdb_event_script(struct ctdb_context *ctdb,
1111 enum ctdb_event call);
1112
1113int32_t ctdb_run_eventscripts(struct ctdb_context *ctdb,
1114 struct ctdb_req_control_old *c,
1115 TDB_DATA data, bool *async_reply);
1116
1117int32_t ctdb_control_enable_script(struct ctdb_context *ctdb, TDB_DATA indata);
1118int32_t ctdb_control_disable_script(struct ctdb_context *ctdb, TDB_DATA indata);
1119
1120#endif
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