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nfs4acls: Introduce a helper variable
[Samba.git] / ctdb / include / ctdb_private.h
blob1d91923663047fc08dfcc54e5d457f837ac8d70e
1 /*
2 ctdb database library
3
4 Copyright (C) Andrew Tridgell 2006
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, see <http://www.gnu.org/licenses/>.
18 */
19
20 #ifndef _CTDB_PRIVATE_H
21 #define _CTDB_PRIVATE_H
22
23 #include "ctdb_client.h"
24 #include <sys/socket.h>
25
26 /*
27 * Structures to support SRVID requests and replies
28 */
29 struct srvid_request {
30 uint32_t pnn;
31 uint64_t srvid;
32 };
33
34 struct srvid_request_data {
35 uint32_t pnn;
36 uint64_t srvid;
37 uint32_t data;
38 };
39
40 /*
41 a tcp connection description
42 also used by tcp_add and tcp_remove controls
43 */
44 struct ctdb_tcp_connection {
45 ctdb_sock_addr src_addr;
46 ctdb_sock_addr dst_addr;
47 };
48
49 /* the wire representation for a tcp tickle array */
50 struct ctdb_tcp_wire_array {
51 uint32_t num;
52 struct ctdb_tcp_connection connections[1];
53 };
54
55 /* the list of tcp tickles used by get/set tcp tickle list */
56 struct ctdb_control_tcp_tickle_list {
57 ctdb_sock_addr addr;
58 struct ctdb_tcp_wire_array tickles;
59 };
60
61 /*
62 array of tcp connections
63 */
64 struct ctdb_tcp_array {
65 uint32_t num;
66 struct ctdb_tcp_connection *connections;
67 };
68
69
70 /* all tunable variables go in here */
71 struct ctdb_tunable {
72 uint32_t max_redirect_count;
73 uint32_t seqnum_interval; /* unit is ms */
74 uint32_t control_timeout;
75 uint32_t traverse_timeout;
76 uint32_t keepalive_interval;
77 uint32_t keepalive_limit;
78 uint32_t recover_timeout;
79 uint32_t recover_interval;
80 uint32_t election_timeout;
81 uint32_t takeover_timeout;
82 uint32_t monitor_interval;
83 uint32_t tickle_update_interval;
84 uint32_t script_timeout;
85 uint32_t script_timeout_count; /* allow dodgy scripts to hang this many times in a row before we mark the node unhealthy */
86 uint32_t script_unhealthy_on_timeout; /* obsolete */
87 uint32_t recovery_grace_period;
88 uint32_t recovery_ban_period;
89 uint32_t database_hash_size;
90 uint32_t database_max_dead;
91 uint32_t rerecovery_timeout;
92 uint32_t enable_bans;
93 uint32_t deterministic_public_ips;
94 uint32_t reclock_ping_period;
95 uint32_t no_ip_failback;
96 uint32_t disable_ip_failover;
97 uint32_t verbose_memory_names;
98 uint32_t recd_ping_timeout;
99 uint32_t recd_ping_failcount;
100 uint32_t log_latency_ms;
101 uint32_t reclock_latency_ms;
102 uint32_t recovery_drop_all_ips;
103 uint32_t verify_recovery_lock;
104 uint32_t vacuum_interval;
105 uint32_t vacuum_max_run_time;
106 uint32_t repack_limit;
107 uint32_t vacuum_limit;
108 uint32_t max_queue_depth_drop_msg;
109 uint32_t allow_unhealthy_db_read;
110 uint32_t stat_history_interval;
111 uint32_t deferred_attach_timeout;
112 uint32_t vacuum_fast_path_count;
113 uint32_t lcp2_public_ip_assignment;
114 uint32_t allow_client_db_attach;
115 uint32_t recover_pdb_by_seqnum;
116 uint32_t deferred_rebalance_on_node_add;
117 uint32_t fetch_collapse;
118 uint32_t hopcount_make_sticky;
119 uint32_t sticky_duration;
120 uint32_t sticky_pindown;
121 uint32_t no_ip_takeover;
122 uint32_t db_record_count_warn;
123 uint32_t db_record_size_warn;
124 uint32_t db_size_warn;
125 uint32_t pulldb_preallocation_size;
126 uint32_t no_ip_host_on_all_disabled;
127 uint32_t samba3_hack;
128 uint32_t mutex_enabled;
129 uint32_t lock_processes_per_db;
130 };
131
132 /*
133 an installed ctdb remote call
134 */
135 struct ctdb_registered_call {
136 struct ctdb_registered_call *next, *prev;
137 uint32_t id;
138 ctdb_fn_t fn;
139 };
140
141 /*
142 check that a pnn is valid
143 */
144 #define ctdb_validate_pnn(ctdb, pnn) (((uint32_t)(pnn)) < (ctdb)->num_nodes)
145
146
147 /* called from the queue code when a packet comes in. Called with data==NULL
148 on error */
149 typedef void (*ctdb_queue_cb_fn_t)(uint8_t *data, size_t length,
150 void *private_data);
151
152 /* used for callbacks in ctdb_control requests */
153 typedef void (*ctdb_control_callback_fn_t)(struct ctdb_context *,
154 int32_t status, TDB_DATA data,
155 const char *errormsg,
156 void *private_data);
157 /*
158 structure describing a connected client in the daemon
159 */
160 struct ctdb_client {
161 struct ctdb_context *ctdb;
162 int fd;
163 struct ctdb_queue *queue;
164 uint32_t client_id;
165 pid_t pid;
166 struct ctdb_tcp_list *tcp_list;
167 uint32_t db_id;
168 uint32_t num_persistent_updates;
169 struct ctdb_client_notify_list *notify;
170 };
171
172 struct ctdb_iface;
173
174 /* state associated with a public ip address */
175 struct ctdb_vnn {
176 struct ctdb_vnn *prev, *next;
177
178 struct ctdb_iface *iface;
179 const char **ifaces;
180 ctdb_sock_addr public_address;
181 uint8_t public_netmask_bits;
182
183 /* the node number that is serving this public address, if any.
184 If no node serves this ip it is set to -1 */
185 int32_t pnn;
186
187 /* List of clients to tickle for this public address */
188 struct ctdb_tcp_array *tcp_array;
189
190 /* whether we need to update the other nodes with changes to our list
191 of connected clients */
192 bool tcp_update_needed;
193
194 /* a context to hang sending gratious arp events off */
195 TALLOC_CTX *takeover_ctx;
196
197 struct ctdb_kill_tcp *killtcp;
198
199 /* Set to true any time an update to this VNN is in flight.
200 This helps to avoid races. */
201 bool update_in_flight;
202
203 /* If CTDB_CONTROL_DEL_PUBLIC_IP is received for this IP
204 * address then this flag is set. It will be deleted in the
205 * release IP callback. */
206 bool delete_pending;
207 };
208
209 /*
210 state associated with one node
211 */
212 struct ctdb_node {
213 struct ctdb_context *ctdb;
214 ctdb_sock_addr address;
215 const char *name; /* for debug messages */
216 void *private_data; /* private to transport */
217 uint32_t pnn;
218 uint32_t flags;
219
220 /* used by the dead node monitoring */
221 uint32_t dead_count;
222 uint32_t rx_cnt;
223 uint32_t tx_cnt;
224
225 /* a list of controls pending to this node, so we can time them out quickly
226 if the node becomes disconnected */
227 struct daemon_control_state *pending_controls;
228
229 /* used by the recovery daemon when distributing ip addresses
230 across the nodes. it needs to know which public ip's can be handled
231 by each node.
232 */
233 struct ctdb_all_public_ips *known_public_ips;
234 struct ctdb_all_public_ips *available_public_ips;
235 /* used by the recovery dameon to track when a node should be banned */
236 struct ctdb_banning_state *ban_state;
237 };
238
239 /*
240 transport specific methods
241 */
242 struct ctdb_methods {
243 int (*initialise)(struct ctdb_context *); /* initialise transport structures */
244 int (*start)(struct ctdb_context *); /* start the transport */
245 int (*add_node)(struct ctdb_node *); /* setup a new node */
246 int (*connect_node)(struct ctdb_node *); /* connect to node */
247 int (*queue_pkt)(struct ctdb_node *, uint8_t *data, uint32_t length);
248 void *(*allocate_pkt)(TALLOC_CTX *mem_ctx, size_t );
249 void (*shutdown)(struct ctdb_context *); /* shutdown transport */
250 void (*restart)(struct ctdb_node *); /* stop and restart the connection */
251 };
252
253 /*
254 transport calls up to the ctdb layer
255 */
256 struct ctdb_upcalls {
257 /* recv_pkt is called when a packet comes in */
258 void (*recv_pkt)(struct ctdb_context *, uint8_t *data, uint32_t length);
259
260 /* node_dead is called when an attempt to send to a node fails */
261 void (*node_dead)(struct ctdb_node *);
262
263 /* node_connected is called when a connection to a node is established */
264 void (*node_connected)(struct ctdb_node *);
265 };
266
267 /* list of message handlers - needs to be changed to a more efficient data
268 structure so we can find a message handler given a srvid quickly */
269 struct ctdb_message_list_header {
270 struct ctdb_message_list_header *next, *prev;
271 struct ctdb_context *ctdb;
272 uint64_t srvid;
273 struct ctdb_message_list *m;
274 };
275 struct ctdb_message_list {
276 struct ctdb_message_list *next, *prev;
277 struct ctdb_message_list_header *h;
278 ctdb_msg_fn_t message_handler;
279 void *message_private;
280 };
281
282 /* additional data required for the daemon mode */
283 struct ctdb_daemon_data {
284 int sd;
285 char *name;
286 struct ctdb_queue *queue;
287 };
288
289
290 #define CTDB_UPDATE_STAT(ctdb, counter, value) \
291 { \
292 if (value > ctdb->statistics.counter) { \
293 ctdb->statistics.counter = c->hopcount; \
294 } \
295 if (value > ctdb->statistics_current.counter) { \
296 ctdb->statistics_current.counter = c->hopcount; \
297 } \
298 }
299
300 #define CTDB_INCREMENT_STAT(ctdb, counter) \
301 { \
302 ctdb->statistics.counter++; \
303 ctdb->statistics_current.counter++; \
304 }
305
306 #define CTDB_DECREMENT_STAT(ctdb, counter) \
307 { \
308 if (ctdb->statistics.counter > 0) \
309 ctdb->statistics.counter--; \
310 if (ctdb->statistics_current.counter > 0) \
311 ctdb->statistics_current.counter--; \
312 }
313
314 #define CTDB_INCREMENT_DB_STAT(ctdb_db, counter) \
315 { \
316 ctdb_db->statistics.counter++; \
317 }
318
319 #define CTDB_DECREMENT_DB_STAT(ctdb_db, counter) \
320 { \
321 if (ctdb_db->statistics.counter > 0) \
322 ctdb_db->statistics.counter--; \
323 }
324
325 #define CTDB_UPDATE_RECLOCK_LATENCY(ctdb, name, counter, value) \
326 { \
327 if (value > ctdb->statistics.counter.max) \
328 ctdb->statistics.counter.max = value; \
329 if (value > ctdb->statistics_current.counter.max) \
330 ctdb->statistics_current.counter.max = value; \
331 \
332 if (ctdb->statistics.counter.num == 0 || \
333 value < ctdb->statistics.counter.min) \
334 ctdb->statistics.counter.min = value; \
335 if (ctdb->statistics_current.counter.num == 0 || \
336 value < ctdb->statistics_current.counter.min) \
337 ctdb->statistics_current.counter.min = value; \
338 \
339 ctdb->statistics.counter.total += value; \
340 ctdb->statistics_current.counter.total += value; \
341 \
342 ctdb->statistics.counter.num++; \
343 ctdb->statistics_current.counter.num++; \
344 \
345 if (ctdb->tunable.reclock_latency_ms != 0) { \
346 if (value*1000 > ctdb->tunable.reclock_latency_ms) { \
347 DEBUG(DEBUG_ERR, \
348 ("High RECLOCK latency %fs for operation %s\n", \
349 value, name)); \
350 } \
351 } \
352 }
353
354 #define CTDB_UPDATE_DB_LATENCY(ctdb_db, operation, counter, value) \
355 { \
356 if (value > ctdb_db->statistics.counter.max) \
357 ctdb_db->statistics.counter.max = value; \
358 if (ctdb_db->statistics.counter.num == 0 || \
359 value < ctdb_db->statistics.counter.min) \
360 ctdb_db->statistics.counter.min = value; \
361 \
362 ctdb_db->statistics.counter.total += value; \
363 ctdb_db->statistics.counter.num++; \
364 \
365 if (ctdb_db->ctdb->tunable.log_latency_ms != 0) { \
366 if (value*1000 > ctdb_db->ctdb->tunable.log_latency_ms) { \
367 DEBUG(DEBUG_ERR, \
368 ("High latency %.6fs for operation %s on database %s\n",\
369 value, operation, ctdb_db->db_name)); \
370 } \
371 } \
372 }
373
374 #define CTDB_UPDATE_LATENCY(ctdb, db, operation, counter, t) \
375 { \
376 double l = timeval_elapsed(&t); \
377 \
378 if (l > ctdb->statistics.counter.max) \
379 ctdb->statistics.counter.max = l; \
380 if (l > ctdb->statistics_current.counter.max) \
381 ctdb->statistics_current.counter.max = l; \
382 \
383 if (ctdb->statistics.counter.num == 0 || \
384 l < ctdb->statistics.counter.min) \
385 ctdb->statistics.counter.min = l; \
386 if (ctdb->statistics_current.counter.num == 0 || \
387 l < ctdb->statistics_current.counter.min) \
388 ctdb->statistics_current.counter.min = l; \
389 \
390 ctdb->statistics.counter.total += l; \
391 ctdb->statistics_current.counter.total += l; \
392 \
393 ctdb->statistics.counter.num++; \
394 ctdb->statistics_current.counter.num++; \
395 \
396 if (ctdb->tunable.log_latency_ms != 0) { \
397 if (l*1000 > ctdb->tunable.log_latency_ms) { \
398 DEBUG(DEBUG_WARNING, \
399 ("High latency %.6fs for operation %s on database %s\n",\
400 l, operation, db->db_name)); \
401 } \
402 } \
403 }
404
405
406
407 /* a structure that contains the elements required for the write record
408 control
409 */
410 struct ctdb_write_record {
411 uint32_t dbid;
412 uint32_t keylen;
413 uint32_t datalen;
414 unsigned char blob[1];
415 };
416
417 enum ctdb_freeze_mode {CTDB_FREEZE_NONE, CTDB_FREEZE_PENDING, CTDB_FREEZE_FROZEN};
418
419 enum ctdb_runstate {
420 CTDB_RUNSTATE_UNKNOWN,
421 CTDB_RUNSTATE_INIT,
422 CTDB_RUNSTATE_SETUP,
423 CTDB_RUNSTATE_FIRST_RECOVERY,
424 CTDB_RUNSTATE_STARTUP,
425 CTDB_RUNSTATE_RUNNING,
426 CTDB_RUNSTATE_SHUTDOWN,
427 };
428
429 const char *runstate_to_string(enum ctdb_runstate runstate);
430 enum ctdb_runstate runstate_from_string(const char *label);
431 void ctdb_set_runstate(struct ctdb_context *ctdb, enum ctdb_runstate runstate);
432
433 void ctdb_shutdown_sequence(struct ctdb_context *ctdb, int exit_code);
434
435 #define CTDB_MONITORING_ACTIVE 0
436 #define CTDB_MONITORING_DISABLED 1
437
438 #define NUM_DB_PRIORITIES 3
439 /* main state of the ctdb daemon */
440 struct ctdb_context {
441 struct tevent_context *ev;
442 struct timeval ctdbd_start_time;
443 struct timeval last_recovery_started;
444 struct timeval last_recovery_finished;
445 uint32_t recovery_mode;
446 TALLOC_CTX *tickle_update_context;
447 TALLOC_CTX *keepalive_ctx;
448 TALLOC_CTX *check_public_ifaces_ctx;
449 struct ctdb_tunable tunable;
450 enum ctdb_freeze_mode freeze_mode[NUM_DB_PRIORITIES+1];
451 struct ctdb_freeze_handle *freeze_handles[NUM_DB_PRIORITIES+1];
452 bool freeze_transaction_started;
453 uint32_t freeze_transaction_id;
454 ctdb_sock_addr *address;
455 const char *name;
456 const char *db_directory;
457 const char *db_directory_persistent;
458 const char *db_directory_state;
459 struct tdb_wrap *db_persistent_health;
460 uint32_t db_persistent_startup_generation;
461 uint64_t db_persistent_check_errors;
462 uint64_t max_persistent_check_errors;
463 const char *transport;
464 char *recovery_lock_file;
465 int recovery_lock_fd;
466 uint32_t pnn; /* our own pnn */
467 uint32_t num_nodes;
468 uint32_t num_connected;
469 unsigned flags;
470 uint32_t capabilities;
471 struct idr_context *idr;
472 int lastid;
473 struct ctdb_node **nodes; /* array of nodes in the cluster - indexed by vnn */
474 struct ctdb_vnn *vnn; /* list of public ip addresses and interfaces */
475 struct ctdb_vnn *single_ip_vnn; /* a structure for the single ip */
476 struct ctdb_iface *ifaces; /* list of local interfaces */
477 char *err_msg;
478 const struct ctdb_methods *methods; /* transport methods */
479 const struct ctdb_upcalls *upcalls; /* transport upcalls */
480 void *private_data; /* private to transport */
481 struct ctdb_db_context *db_list;
482 struct ctdb_message_list_header *message_list_header;
483 struct tdb_context *message_list_indexdb;
484 struct ctdb_daemon_data daemon;
485 struct ctdb_statistics statistics;
486 struct ctdb_statistics statistics_current;
487 #define MAX_STAT_HISTORY 100
488 struct ctdb_statistics statistics_history[MAX_STAT_HISTORY];
489 struct ctdb_vnn_map *vnn_map;
490 uint32_t num_clients;
491 uint32_t recovery_master;
492 struct ctdb_call_state *pending_calls;
493 struct ctdb_client_ip *client_ip_list;
494 bool do_checkpublicip;
495 struct trbt_tree *server_ids;
496 bool do_setsched;
497 const char *event_script_dir;
498 const char *notification_script;
499 const char *default_public_interface;
500 pid_t ctdbd_pid;
501 pid_t recoverd_pid;
502 enum ctdb_runstate runstate;
503 struct ctdb_monitor_state *monitor;
504 int start_as_disabled;
505 int start_as_stopped;
506 bool valgrinding;
507 uint32_t event_script_timeouts; /* counting how many consecutive times an eventscript has timedout */
508 uint32_t *recd_ping_count;
509 TALLOC_CTX *recd_ctx; /* a context used to track recoverd monitoring events */
510 TALLOC_CTX *release_ips_ctx; /* a context used to automatically drop all IPs if we fail to recover the node */
511
512 TALLOC_CTX *event_script_ctx;
513 int active_events;
514
515 struct ctdb_event_script_state *current_monitor;
516 struct ctdb_scripts_wire *last_status[CTDB_EVENT_MAX];
517
518 TALLOC_CTX *banning_ctx;
519
520 struct ctdb_vacuum_child_context *vacuumers;
521
522 /* mapping from pid to ctdb_client * */
523 struct ctdb_client_pid_list *client_pids;
524
525 /* used in the recovery daemon to remember the ip allocation */
526 struct trbt_tree *ip_tree;
527
528 /* Used to defer db attach requests while in recovery mode */
529 struct ctdb_deferred_attach_context *deferred_attach;
530
531 /* if we are a child process, do we have a domain socket to send controls on */
532 bool can_send_controls;
533
534 /* list of event script callback functions that are active */
535 struct event_script_callback *script_callbacks;
536
537 struct ctdb_reloadips_handle *reload_ips;
538
539 const char *nodes_file;
540 const char *public_addresses_file;
541 struct trbt_tree *child_processes;
542
543 /* Used for locking record/db/alldb */
544 struct lock_context *lock_current;
545 struct lock_context *lock_pending;
546 };
547
548 struct ctdb_db_context {
549 struct ctdb_db_context *next, *prev;
550 struct ctdb_context *ctdb;
551 uint32_t db_id;
552 uint32_t priority;
553 bool persistent;
554 bool readonly; /* Do we support read-only delegations ? */
555 bool sticky; /* Do we support sticky records ? */
556 const char *db_name;
557 const char *db_path;
558 struct tdb_wrap *ltdb;
559 struct tdb_context *rottdb; /* ReadOnly tracking TDB */
560 struct ctdb_registered_call *calls; /* list of registered calls */
561 uint32_t seqnum;
562 struct timed_event *seqnum_update;
563 struct ctdb_traverse_local_handle *traverse;
564 struct ctdb_vacuum_handle *vacuum_handle;
565 char *unhealthy_reason;
566 int pending_requests;
567 struct revokechild_handle *revokechild_active;
568 struct ctdb_persistent_state *persistent_state;
569 struct trbt_tree *delete_queue;
570 struct trbt_tree *sticky_records;
571 int (*ctdb_ltdb_store_fn)(struct ctdb_db_context *ctdb_db,
572 TDB_DATA key,
573 struct ctdb_ltdb_header *header,
574 TDB_DATA data);
575
576 /* used to track which records we are currently fetching
577 so we can avoid sending duplicate fetch requests
578 */
579 struct trbt_tree *deferred_fetch;
580 struct trbt_tree *defer_dmaster;
581
582 struct ctdb_db_statistics statistics;
583
584 struct lock_context *lock_current;
585 struct lock_context *lock_pending;
586 int lock_num_current;
587 };
588
589
590 #define CTDB_NO_MEMORY(ctdb, p) do { if (!(p)) { \
591 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
592 ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
593 return -1; }} while (0)
594
595 #define CTDB_NO_MEMORY_VOID(ctdb, p) do { if (!(p)) { \
596 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
597 ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
598 return; }} while (0)
599
600 #define CTDB_NO_MEMORY_NULL(ctdb, p) do { if (!(p)) { \
601 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
602 ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
603 return NULL; }} while (0)
604
605 #define CTDB_NO_MEMORY_FATAL(ctdb, p) do { if (!(p)) { \
606 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
607 ctdb_fatal(ctdb, "Out of memory in " __location__ ); \
608 }} while (0)
609
610 /*
611 struct for kill_tcp control
612 */
613 struct ctdb_control_killtcp {
614 ctdb_sock_addr src_addr;
615 ctdb_sock_addr dst_addr;
616 };
617
618 /*
619 struct holding a ctdb_sock_addr and an interface name,
620 used to add/remove public addresses
621 */
622 struct ctdb_control_ip_iface {
623 ctdb_sock_addr addr;
624 uint32_t mask;
625 uint32_t len;
626 char iface[1];
627 };
628
629 /*
630 struct holding a ctdb_sock_addr and an interface name,
631 used for send_gratious_arp
632 */
633 struct ctdb_control_gratious_arp {
634 ctdb_sock_addr addr;
635 uint32_t mask;
636 uint32_t len;
637 char iface[1];
638 };
639
640 /*
641 persistent store control - update this record on all other nodes
642 */
643 struct ctdb_control_persistent_store {
644 uint32_t db_id;
645 uint32_t len;
646 uint8_t data[1];
647 };
648
649 /*
650 structure used for CTDB_SRVID_NODE_FLAGS_CHANGED
651 */
652 struct ctdb_node_flag_change {
653 uint32_t pnn;
654 uint32_t new_flags;
655 uint32_t old_flags;
656 };
657
658 /*
659 struct for admin setting a ban
660 */
661 struct ctdb_ban_info {
662 uint32_t pnn;
663 uint32_t ban_time;
664 };
665
666 enum call_state {CTDB_CALL_WAIT, CTDB_CALL_DONE, CTDB_CALL_ERROR};
667
668 #define CTDB_LMASTER_ANY 0xffffffff
669
670 /*
671 state of a in-progress ctdb call
672 */
673 struct ctdb_call_state {
674 struct ctdb_call_state *next, *prev;
675 enum call_state state;
676 uint32_t reqid;
677 struct ctdb_req_call *c;
678 struct ctdb_db_context *ctdb_db;
679 const char *errmsg;
680 struct ctdb_call *call;
681 uint32_t generation;
682 struct {
683 void (*fn)(struct ctdb_call_state *);
684 void *private_data;
685 } async;
686 };
687
688
689 /* used for fetch_lock */
690 struct ctdb_fetch_handle {
691 struct ctdb_db_context *ctdb_db;
692 TDB_DATA key;
693 TDB_DATA *data;
694 struct ctdb_ltdb_header header;
695 };
696
697 /* internal prototypes */
698 void ctdb_set_error(struct ctdb_context *ctdb, const char *fmt, ...) PRINTF_ATTRIBUTE(2,3);
699 void ctdb_fatal(struct ctdb_context *ctdb, const char *msg);
700 void ctdb_die(struct ctdb_context *ctdb, const char *msg);
701 bool ctdb_set_helper(const char *type, char *helper, size_t size,
702 const char *envvar, const char *dir, const char *file);
703 void ctdb_external_trace(void);
704 bool ctdb_same_address(ctdb_sock_addr *a1, ctdb_sock_addr *a2);
705 int ctdb_parse_address(TALLOC_CTX *mem_ctx, const char *str,
706 ctdb_sock_addr *address);
707 bool ctdb_same_ip(const ctdb_sock_addr *ip1, const ctdb_sock_addr *ip2);
708 bool ctdb_same_sockaddr(const ctdb_sock_addr *ip1, const ctdb_sock_addr *ip2);
709 uint32_t ctdb_hash(const TDB_DATA *key);
710 uint32_t *ctdb_key_to_idkey(TALLOC_CTX *mem_ctx, TDB_DATA key);
711
712 void ctdb_request_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
713 void ctdb_request_dmaster(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
714 void ctdb_request_message(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
715 void ctdb_reply_dmaster(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
716 void ctdb_reply_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
717 void ctdb_reply_error(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
718
719 uint32_t ctdb_lmaster(struct ctdb_context *ctdb, const TDB_DATA *key);
720 int ctdb_ltdb_fetch(struct ctdb_db_context *ctdb_db,
721 TDB_DATA key, struct ctdb_ltdb_header *header,
722 TALLOC_CTX *mem_ctx, TDB_DATA *data);
723 int ctdb_ltdb_store(struct ctdb_db_context *ctdb_db, TDB_DATA key,
724 struct ctdb_ltdb_header *header, TDB_DATA data);
725 int ctdb_ltdb_delete(struct ctdb_db_context *ctdb_db, TDB_DATA key);
726 int ctdb_ltdb_fetch_with_header(struct ctdb_db_context *ctdb_db,
727 TDB_DATA key, struct ctdb_ltdb_header *header,
728 TALLOC_CTX *mem_ctx, TDB_DATA *data);
729 int32_t ctdb_control_start_persistent_update(struct ctdb_context *ctdb,
730 struct ctdb_req_control *c,
731 TDB_DATA recdata);
732 int32_t ctdb_control_cancel_persistent_update(struct ctdb_context *ctdb,
733 struct ctdb_req_control *c,
734 TDB_DATA recdata);
735 void ctdb_queue_packet(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
736 void ctdb_queue_packet_opcode(struct ctdb_context *ctdb, struct ctdb_req_header *hdr, unsigned opcode);
737 int ctdb_ltdb_lock_requeue(struct ctdb_db_context *ctdb_db,
738 TDB_DATA key, struct ctdb_req_header *hdr,
739 void (*recv_pkt)(void *, struct ctdb_req_header *),
740 void *recv_context, bool ignore_generation);
741 int ctdb_ltdb_lock_fetch_requeue(struct ctdb_db_context *ctdb_db,
742 TDB_DATA key, struct ctdb_ltdb_header *header,
743 struct ctdb_req_header *hdr, TDB_DATA *data,
744 void (*recv_pkt)(void *, struct ctdb_req_header *),
745 void *recv_context, bool ignore_generation);
746 void ctdb_input_pkt(struct ctdb_context *ctdb, struct ctdb_req_header *);
747
748 struct ctdb_call_state *ctdb_call_local_send(struct ctdb_db_context *ctdb_db,
749 struct ctdb_call *call,
750 struct ctdb_ltdb_header *header,
751 TDB_DATA *data);
752
753
754 int ctdb_start_daemon(struct ctdb_context *ctdb, bool do_fork);
755
756 /*
757 queue a packet for sending
758 */
759 int ctdb_queue_send(struct ctdb_queue *queue, uint8_t *data, uint32_t length);
760
761 /*
762 setup the fd used by the queue
763 */
764 int ctdb_queue_set_fd(struct ctdb_queue *queue, int fd);
765
766 /*
767 setup a packet queue on a socket
768 */
769 struct ctdb_queue *ctdb_queue_setup(struct ctdb_context *ctdb,
770 TALLOC_CTX *mem_ctx, int fd, int alignment,
771
772 ctdb_queue_cb_fn_t callback,
773 void *private_data, const char *fmt, ...)
774 PRINTF_ATTRIBUTE(7,8);
775
776 /*
777 allocate a packet for use in client<->daemon communication
778 */
779 struct ctdb_req_header *_ctdbd_allocate_pkt(struct ctdb_context *ctdb,
780 TALLOC_CTX *mem_ctx,
781 enum ctdb_operation operation,
782 size_t length, size_t slength,
783 const char *type);
784 #define ctdbd_allocate_pkt(ctdb, mem_ctx, operation, length, type) \
785 (type *)_ctdbd_allocate_pkt(ctdb, mem_ctx, operation, length, sizeof(type), #type)
786
787 struct ctdb_req_header *_ctdb_transport_allocate(struct ctdb_context *ctdb,
788 TALLOC_CTX *mem_ctx,
789 enum ctdb_operation operation,
790 size_t length, size_t slength,
791 const char *type);
792 #define ctdb_transport_allocate(ctdb, mem_ctx, operation, length, type) \
793 (type *)_ctdb_transport_allocate(ctdb, mem_ctx, operation, length, sizeof(type), #type)
794
795 int ctdb_queue_length(struct ctdb_queue *queue);
796
797 /*
798 lock a record in the ltdb, given a key
799 */
800 int ctdb_ltdb_lock(struct ctdb_db_context *ctdb_db, TDB_DATA key);
801
802 /*
803 unlock a record in the ltdb, given a key
804 */
805 int ctdb_ltdb_unlock(struct ctdb_db_context *ctdb_db, TDB_DATA key);
806
807
808 int ctdb_client_send_message(struct ctdb_context *ctdb, uint32_t vnn,
809 uint64_t srvid, TDB_DATA data);
810
811 /*
812 send a ctdb message
813 */
814 int ctdb_daemon_send_message(struct ctdb_context *ctdb, uint32_t pnn,
815 uint64_t srvid, TDB_DATA data);
816
817
818 int ctdb_daemon_call_recv(struct ctdb_call_state *state, struct ctdb_call *call);
819
820 struct ctdb_call_state *ctdb_daemon_call_send_remote(struct ctdb_db_context *ctdb_db,
821 struct ctdb_call *call,
822 struct ctdb_ltdb_header *header);
823
824 int ctdb_call_local(struct ctdb_db_context *ctdb_db, struct ctdb_call *call,
825 struct ctdb_ltdb_header *header, TALLOC_CTX *mem_ctx,
826 TDB_DATA *data, bool updatetdb);
827
828 #define ctdb_reqid_find(ctdb, reqid, type) (type *)_ctdb_reqid_find(ctdb, reqid, #type, __location__)
829
830 int ctdb_socket_connect(struct ctdb_context *ctdb);
831 void ctdb_client_read_cb(uint8_t *data, size_t cnt, void *args);
832
833 #define CTDB_BAD_REQID ((uint32_t)-1)
834 uint32_t ctdb_reqid_new(struct ctdb_context *ctdb, void *state);
835 void *_ctdb_reqid_find(struct ctdb_context *ctdb, uint32_t reqid, const char *type, const char *location);
836 void ctdb_reqid_remove(struct ctdb_context *ctdb, uint32_t reqid);
837
838 void ctdb_request_control(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
839 void ctdb_reply_control(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
840
841 int ctdb_daemon_send_control(struct ctdb_context *ctdb, uint32_t destnode,
842 uint64_t srvid, uint32_t opcode, uint32_t client_id, uint32_t flags,
843 TDB_DATA data,
844 ctdb_control_callback_fn_t callback,
845 void *private_data);
846
847 int32_t ctdb_control_db_attach(struct ctdb_context *ctdb, TDB_DATA indata,
848 TDB_DATA *outdata, uint64_t tdb_flags,
849 bool persistent, uint32_t client_id,
850 struct ctdb_req_control *c,
851 bool *async_reply);
852 int32_t ctdb_control_db_detach(struct ctdb_context *ctdb, TDB_DATA indata,
853 uint32_t client_id);
854
855 int ctdb_daemon_set_call(struct ctdb_context *ctdb, uint32_t db_id,
856 ctdb_fn_t fn, int id);
857
858 int ctdb_control(struct ctdb_context *ctdb, uint32_t destnode, uint64_t srvid,
859 uint32_t opcode, uint32_t flags, TDB_DATA data,
860 TALLOC_CTX *mem_ctx, TDB_DATA *outdata, int32_t *status,
861 struct timeval *timeout, char **errormsg);
862 int ctdb_control_recv(struct ctdb_context *ctdb,
863 struct ctdb_client_control_state *state,
864 TALLOC_CTX *mem_ctx,
865 TDB_DATA *outdata, int32_t *status, char **errormsg);
866
867 struct ctdb_client_control_state *
868 ctdb_control_send(struct ctdb_context *ctdb,
869 uint32_t destnode, uint64_t srvid,
870 uint32_t opcode, uint32_t flags, TDB_DATA data,
871 TALLOC_CTX *mem_ctx,
872 struct timeval *timeout,
873 char **errormsg);
874
875
876
877
878 #define CHECK_CONTROL_DATA_SIZE(size) do { \
879 if (indata.dsize != size) { \
880 DEBUG(0,(__location__ " Invalid data size in opcode %u. Got %u expected %u\n", \
881 opcode, (unsigned)indata.dsize, (unsigned)size)); \
882 return -1; \
883 } \
884 } while (0)
885
886 #define CHECK_CONTROL_MIN_DATA_SIZE(size) do { \
887 if (indata.dsize < size) { \
888 DEBUG(0,(__location__ " Invalid data size in opcode %u. Got %u expected >= %u\n", \
889 opcode, (unsigned)indata.dsize, (unsigned)size)); \
890 return -1; \
891 } \
892 } while (0)
893
894 int ctdb_control_getvnnmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
895 int ctdb_control_setvnnmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
896 int ctdb_control_getdbmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
897 int ctdb_control_getnodemap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
898 int ctdb_control_getnodesfile(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
899
900
901 /* structure used for pulldb control */
902 struct ctdb_control_pulldb {
903 uint32_t db_id;
904 uint32_t lmaster;
905 };
906
907 /* structure used for sending lists of records */
908 struct ctdb_marshall_buffer {
909 uint32_t db_id;
910 uint32_t count;
911 uint8_t data[1];
912 };
913
914 /*
915 structure for setting a tunable
916 */
917 struct ctdb_control_set_tunable {
918 uint32_t value;
919 uint32_t length;
920 uint8_t name[1];
921 };
922
923 /*
924 structure for getting a tunable
925 */
926 struct ctdb_control_get_tunable {
927 uint32_t length;
928 uint8_t name[1];
929 };
930
931 /*
932 structure for listing tunables
933 */
934 struct ctdb_control_list_tunable {
935 uint32_t length;
936 /* returns a : separated list of tunable names */
937 uint8_t data[1];
938 };
939
940
941 struct ctdb_control_wipe_database {
942 uint32_t db_id;
943 uint32_t transaction_id;
944 };
945
946 /*
947 state of a in-progress ctdb call in client
948 */
949 struct ctdb_client_call_state {
950 enum call_state state;
951 uint32_t reqid;
952 struct ctdb_db_context *ctdb_db;
953 struct ctdb_call *call;
954 struct {
955 void (*fn)(struct ctdb_client_call_state *);
956 void *private_data;
957 } async;
958 };
959
960
961 int32_t ctdb_control_traverse_start_ext(struct ctdb_context *ctdb,
962 TDB_DATA indata,
963 TDB_DATA *outdata,
964 uint32_t srcnode,
965 uint32_t client_id);
966 int32_t ctdb_control_traverse_start(struct ctdb_context *ctdb, TDB_DATA indata,
967 TDB_DATA *outdata, uint32_t srcnode, uint32_t client_id);
968 int32_t ctdb_control_traverse_all(struct ctdb_context *ctdb, TDB_DATA data, TDB_DATA *outdata);
969 int32_t ctdb_control_traverse_all_ext(struct ctdb_context *ctdb, TDB_DATA data, TDB_DATA *outdata);
970 int32_t ctdb_control_traverse_data(struct ctdb_context *ctdb, TDB_DATA data, TDB_DATA *outdata);
971 int32_t ctdb_control_traverse_kill(struct ctdb_context *ctdb, TDB_DATA indata,
972 TDB_DATA *outdata, uint32_t srcnode);
973
974 int ctdb_dispatch_message(struct ctdb_context *ctdb, uint64_t srvid, TDB_DATA data);
975 bool ctdb_check_message_handler(struct ctdb_context *ctdb, uint64_t srvid);
976
977 int daemon_register_message_handler(struct ctdb_context *ctdb, uint32_t client_id, uint64_t srvid);
978 int ctdb_deregister_message_handler(struct ctdb_context *ctdb, uint64_t srvid, void *private_data);
979 int daemon_deregister_message_handler(struct ctdb_context *ctdb, uint32_t client_id, uint64_t srvid);
980 int daemon_check_srvids(struct ctdb_context *ctdb, TDB_DATA indata,
981 TDB_DATA *outdata);
982
983 int32_t ctdb_ltdb_enable_seqnum(struct ctdb_context *ctdb, uint32_t db_id);
984 int32_t ctdb_ltdb_update_seqnum(struct ctdb_context *ctdb, uint32_t db_id, uint32_t srcnode);
985
986 struct ctdb_rec_data *ctdb_marshall_record(TALLOC_CTX *mem_ctx, uint32_t reqid,
987 TDB_DATA key, struct ctdb_ltdb_header *, TDB_DATA data);
988
989 struct ctdb_rec_data *ctdb_marshall_loop_next(struct ctdb_marshall_buffer *m, struct ctdb_rec_data *r,
990 uint32_t *reqid,
991 struct ctdb_ltdb_header *header,
992 TDB_DATA *key, TDB_DATA *data);
993
994 int32_t ctdb_control_pull_db(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
995 int32_t ctdb_control_push_db(struct ctdb_context *ctdb, TDB_DATA indata);
996
997 int32_t ctdb_control_set_recmode(struct ctdb_context *ctdb,
998 struct ctdb_req_control *c,
999 TDB_DATA indata, bool *async_reply,
1000 const char **errormsg);
1001 void ctdb_request_control_reply(struct ctdb_context *ctdb, struct ctdb_req_control *c,
1002 TDB_DATA *outdata, int32_t status, const char *errormsg);
1003
1004 int32_t ctdb_control_freeze(struct ctdb_context *ctdb, struct ctdb_req_control *c, bool *async_reply);
1005 int32_t ctdb_control_thaw(struct ctdb_context *ctdb, uint32_t priority,
1006 bool check_recmode);
1007
1008 int ctdb_start_recoverd(struct ctdb_context *ctdb);
1009 void ctdb_stop_recoverd(struct ctdb_context *ctdb);
1010
1011 uint32_t ctdb_get_num_active_nodes(struct ctdb_context *ctdb);
1012
1013 void ctdb_disable_monitoring(struct ctdb_context *ctdb);
1014 void ctdb_enable_monitoring(struct ctdb_context *ctdb);
1015 void ctdb_stop_monitoring(struct ctdb_context *ctdb);
1016 void ctdb_wait_for_first_recovery(struct ctdb_context *ctdb);
1017 int ctdb_tcp_init(struct ctdb_context *ctdb);
1018 int ctdb_ibw_init(struct ctdb_context *ctdb);
1019 void ctdb_start_tcp_tickle_update(struct ctdb_context *ctdb);
1020 void ctdb_send_keepalive(struct ctdb_context *ctdb, uint32_t destnode);
1021 void ctdb_start_keepalive(struct ctdb_context *ctdb);
1022 void ctdb_stop_keepalive(struct ctdb_context *ctdb);
1023 int32_t ctdb_run_eventscripts(struct ctdb_context *ctdb, struct ctdb_req_control *c, TDB_DATA data, bool *async_reply);
1024
1025
1026 void ctdb_daemon_cancel_controls(struct ctdb_context *ctdb, struct ctdb_node *node);
1027 void ctdb_call_resend_all(struct ctdb_context *ctdb);
1028 void ctdb_node_dead(struct ctdb_node *node);
1029 void ctdb_node_connected(struct ctdb_node *node);
1030 bool ctdb_blocking_freeze(struct ctdb_context *ctdb);
1031 bool set_scheduler(void);
1032 void reset_scheduler(void);
1033
1034 struct tevent_signal *ctdb_init_sigchld(struct ctdb_context *ctdb);
1035 void ctdb_track_child(struct ctdb_context *ctdb, pid_t pid);
1036 pid_t ctdb_fork(struct ctdb_context *ctdb);
1037 void ctdb_set_child_info(TALLOC_CTX *mem_ctx, const char *child_name_fmt, ...);
1038 int ctdb_kill(struct ctdb_context *ctdb, pid_t pid, int signum);
1039
1040 int32_t ctdb_control_takeover_ip(struct ctdb_context *ctdb,
1041 struct ctdb_req_control *c,
1042 TDB_DATA indata,
1043 bool *async_reply);
1044 int32_t ctdb_control_release_ip(struct ctdb_context *ctdb,
1045 struct ctdb_req_control *c,
1046 TDB_DATA indata,
1047 bool *async_reply);
1048 int32_t ctdb_control_ipreallocated(struct ctdb_context *ctdb,
1049 struct ctdb_req_control *c,
1050 bool *async_reply);
1051 int32_t ctdb_control_start_recovery(struct ctdb_context *ctdb,
1052 struct ctdb_req_control *c,
1053 bool *async_reply);
1054 int32_t ctdb_control_end_recovery(struct ctdb_context *ctdb,
1055 struct ctdb_req_control *c,
1056 bool *async_reply);
1057
1058 int ctdb_ctrl_takeover_ip(struct ctdb_context *ctdb, struct timeval timeout,
1059 uint32_t destnode, struct ctdb_public_ip *ip);
1060 int ctdb_ctrl_release_ip(struct ctdb_context *ctdb, struct timeval timeout,
1061 uint32_t destnode, struct ctdb_public_ip *ip);
1062
1063 int32_t ctdb_control_get_public_ips(struct ctdb_context *ctdb,
1064 struct ctdb_req_control *c,
1065 TDB_DATA *outdata);
1066 int ctdb_ctrl_get_public_ips(struct ctdb_context *ctdb,
1067 struct timeval timeout,
1068 uint32_t destnode,
1069 TALLOC_CTX *mem_ctx,
1070 struct ctdb_all_public_ips **ips);
1071 #define CTDB_PUBLIC_IP_FLAGS_ONLY_AVAILABLE 0x00010000
1072 int ctdb_ctrl_get_public_ips_flags(struct ctdb_context *ctdb,
1073 struct timeval timeout, uint32_t destnode,
1074 TALLOC_CTX *mem_ctx,
1075 uint32_t flags,
1076 struct ctdb_all_public_ips **ips);
1077
1078 struct ctdb_control_iface_info {
1079 char name[CTDB_IFACE_SIZE+2];
1080 uint16_t link_state;
1081 uint32_t references;
1082 };
1083
1084 struct ctdb_control_public_ip_info {
1085 struct ctdb_public_ip ip;
1086 uint32_t active_idx;
1087 uint32_t num;
1088 struct ctdb_control_iface_info ifaces[1];
1089 };
1090
1091 struct ctdb_control_get_ifaces {
1092 uint32_t num;
1093 struct ctdb_control_iface_info ifaces[1];
1094 };
1095
1096 int32_t ctdb_control_get_public_ip_info(struct ctdb_context *ctdb,
1097 struct ctdb_req_control *c,
1098 TDB_DATA indata,
1099 TDB_DATA *outdata);
1100 int32_t ctdb_control_get_ifaces(struct ctdb_context *ctdb,
1101 struct ctdb_req_control *c,
1102 TDB_DATA *outdata);
1103 int32_t ctdb_control_set_iface_link(struct ctdb_context *ctdb,
1104 struct ctdb_req_control *c,
1105 TDB_DATA indata);
1106 int ctdb_ctrl_get_public_ip_info(struct ctdb_context *ctdb,
1107 struct timeval timeout, uint32_t destnode,
1108 TALLOC_CTX *mem_ctx,
1109 const ctdb_sock_addr *addr,
1110 struct ctdb_control_public_ip_info **info);
1111 int ctdb_ctrl_get_ifaces(struct ctdb_context *ctdb,
1112 struct timeval timeout, uint32_t destnode,
1113 TALLOC_CTX *mem_ctx,
1114 struct ctdb_control_get_ifaces **ifaces);
1115 int ctdb_ctrl_set_iface_link(struct ctdb_context *ctdb,
1116 struct timeval timeout, uint32_t destnode,
1117 TALLOC_CTX *mem_ctx,
1118 const struct ctdb_control_iface_info *info);
1119
1120 /* from takeover/system.c */
1121 uint32_t uint16_checksum(uint16_t *data, size_t n);
1122 int ctdb_sys_send_arp(const ctdb_sock_addr *addr, const char *iface);
1123 bool ctdb_sys_have_ip(ctdb_sock_addr *addr);
1124 char *ctdb_sys_find_ifname(ctdb_sock_addr *addr);
1125 bool ctdb_sys_check_iface_exists(const char *iface);
1126 int ctdb_get_peer_pid(const int fd, pid_t *peer_pid);
1127 int ctdb_sys_send_tcp(const ctdb_sock_addr *dest,
1128 const ctdb_sock_addr *src,
1129 uint32_t seq, uint32_t ack, int rst);
1130
1131 /* Details of a byte range lock */
1132 struct ctdb_lock_info {
1133 ino_t inode;
1134 off_t start, end;
1135 bool waiting;
1136 bool read_only;
1137 };
1138
1139 int ctdb_set_process_name(const char *name);
1140
1141 typedef void (*client_async_callback)(struct ctdb_context *ctdb, uint32_t node_pnn, int32_t res, TDB_DATA outdata, void *callback_data);
1142
1143 int ctdb_set_public_addresses(struct ctdb_context *ctdb, bool check_addresses);
1144 int ctdb_set_single_public_ip(struct ctdb_context *ctdb,
1145 const char *iface,
1146 const char *ip);
1147 int ctdb_set_notification_script(struct ctdb_context *ctdb, const char *script);
1148 int ctdb_takeover_run(struct ctdb_context *ctdb, struct ctdb_node_map *nodemap,
1149 uint32_t *force_rebalance_nodes,
1150 client_async_callback fail_callback, void *callback_data);
1151
1152 int32_t ctdb_control_tcp_client(struct ctdb_context *ctdb, uint32_t client_id,
1153 TDB_DATA indata);
1154 int32_t ctdb_control_tcp_add(struct ctdb_context *ctdb, TDB_DATA indata, bool tcp_update_needed);
1155 int32_t ctdb_control_tcp_remove(struct ctdb_context *ctdb, TDB_DATA indata);
1156 int32_t ctdb_control_startup(struct ctdb_context *ctdb, uint32_t vnn);
1157 int32_t ctdb_control_kill_tcp(struct ctdb_context *ctdb, TDB_DATA indata);
1158 int32_t ctdb_control_send_gratious_arp(struct ctdb_context *ctdb, TDB_DATA indata);
1159 int32_t ctdb_control_get_tcp_tickle_list(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
1160 int32_t ctdb_control_set_tcp_tickle_list(struct ctdb_context *ctdb, TDB_DATA indata);
1161
1162 void ctdb_takeover_client_destructor_hook(struct ctdb_client *client);
1163 int ctdb_event_script(struct ctdb_context *ctdb, enum ctdb_eventscript_call call);
1164 int ctdb_event_script_args(struct ctdb_context *ctdb, enum ctdb_eventscript_call call,
1165 const char *fmt, ...) PRINTF_ATTRIBUTE(3,4);
1166 int ctdb_event_script_callback(struct ctdb_context *ctdb,
1167 TALLOC_CTX *mem_ctx,
1168 void (*callback)(struct ctdb_context *, int, void *),
1169 void *private_data,
1170 enum ctdb_eventscript_call call,
1171 const char *fmt, ...) PRINTF_ATTRIBUTE(6,7);
1172 void ctdb_release_all_ips(struct ctdb_context *ctdb);
1173
1174 void set_nonblocking(int fd);
1175 void set_close_on_exec(int fd);
1176
1177 bool ctdb_recovery_have_lock(struct ctdb_context *ctdb);
1178 bool ctdb_recovery_lock(struct ctdb_context *ctdb);
1179 void ctdb_recovery_unlock(struct ctdb_context *ctdb);
1180
1181 int ctdb_set_recovery_lock_file(struct ctdb_context *ctdb, const char *file);
1182
1183 int32_t ctdb_control_get_tunable(struct ctdb_context *ctdb, TDB_DATA indata,
1184 TDB_DATA *outdata);
1185 int32_t ctdb_control_set_tunable(struct ctdb_context *ctdb, TDB_DATA indata);
1186 int32_t ctdb_control_list_tunables(struct ctdb_context *ctdb, TDB_DATA *outdata);
1187 int32_t ctdb_control_try_delete_records(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
1188 int32_t ctdb_control_receive_records(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
1189 int32_t ctdb_control_add_public_address(struct ctdb_context *ctdb, TDB_DATA indata);
1190 int32_t ctdb_control_del_public_address(struct ctdb_context *ctdb,
1191 struct ctdb_req_control *c,
1192 TDB_DATA recdata, bool *async_reply);
1193
1194 void ctdb_tunables_set_defaults(struct ctdb_context *ctdb);
1195
1196 int32_t ctdb_control_modflags(struct ctdb_context *ctdb, TDB_DATA indata);
1197
1198 int ctdb_ctrl_get_all_tunables(struct ctdb_context *ctdb,
1199 struct timeval timeout,
1200 uint32_t destnode,
1201 struct ctdb_tunable *tunables);
1202
1203 void ctdb_start_freeze(struct ctdb_context *ctdb, uint32_t priority);
1204
1205 bool parse_ip_mask(const char *s, const char *iface, ctdb_sock_addr *addr, unsigned *mask);
1206 bool parse_ip_port(const char *s, ctdb_sock_addr *addr);
1207 bool parse_ip(const char *s, const char *iface, unsigned port, ctdb_sock_addr *addr);
1208 bool parse_ipv4(const char *s, unsigned port, struct sockaddr_in *sin);
1209
1210
1211 int ctdb_sys_open_capture_socket(const char *iface, void **private_data);
1212 int ctdb_sys_close_capture_socket(void *private_data);
1213 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);
1214
1215 int ctdb_ctrl_killtcp(struct ctdb_context *ctdb,
1216 struct timeval timeout,
1217 uint32_t destnode,
1218 struct ctdb_control_killtcp *killtcp);
1219
1220 int ctdb_ctrl_add_public_ip(struct ctdb_context *ctdb,
1221 struct timeval timeout,
1222 uint32_t destnode,
1223 struct ctdb_control_ip_iface *pub);
1224
1225 int ctdb_ctrl_del_public_ip(struct ctdb_context *ctdb,
1226 struct timeval timeout,
1227 uint32_t destnode,
1228 struct ctdb_control_ip_iface *pub);
1229
1230 int ctdb_ctrl_gratious_arp(struct ctdb_context *ctdb,
1231 struct timeval timeout,
1232 uint32_t destnode,
1233 ctdb_sock_addr *addr,
1234 const char *ifname);
1235
1236 int ctdb_ctrl_get_tcp_tickles(struct ctdb_context *ctdb,
1237 struct timeval timeout,
1238 uint32_t destnode,
1239 TALLOC_CTX *mem_ctx,
1240 ctdb_sock_addr *addr,
1241 struct ctdb_control_tcp_tickle_list **list);
1242
1243
1244 int32_t ctdb_control_register_server_id(struct ctdb_context *ctdb,
1245 uint32_t client_id,
1246 TDB_DATA indata);
1247 int32_t ctdb_control_check_server_id(struct ctdb_context *ctdb,
1248 TDB_DATA indata);
1249 int32_t ctdb_control_unregister_server_id(struct ctdb_context *ctdb,
1250 TDB_DATA indata);
1251 int32_t ctdb_control_get_server_id_list(struct ctdb_context *ctdb,
1252 TDB_DATA *outdata);
1253 int32_t ctdb_control_uptime(struct ctdb_context *ctdb,
1254 TDB_DATA *outdata);
1255
1256 int ctdb_attach_databases(struct ctdb_context *ctdb);
1257
1258 int32_t ctdb_control_persistent_store(struct ctdb_context *ctdb,
1259 struct ctdb_req_control *c,
1260 TDB_DATA recdata, bool *async_reply);
1261 int32_t ctdb_control_update_record(struct ctdb_context *ctdb,
1262 struct ctdb_req_control *c, TDB_DATA recdata,
1263 bool *async_reply);
1264
1265 int32_t ctdb_control_trans3_commit(struct ctdb_context *ctdb,
1266 struct ctdb_req_control *c,
1267 TDB_DATA recdata, bool *async_reply);
1268
1269 void ctdb_persistent_finish_trans3_commits(struct ctdb_context *ctdb);
1270
1271 int32_t ctdb_control_transaction_start(struct ctdb_context *ctdb, uint32_t id);
1272 int32_t ctdb_control_transaction_commit(struct ctdb_context *ctdb, uint32_t id);
1273 int32_t ctdb_control_transaction_cancel(struct ctdb_context *ctdb);
1274 int32_t ctdb_control_wipe_database(struct ctdb_context *ctdb, TDB_DATA indata);
1275 int32_t ctdb_control_db_set_healthy(struct ctdb_context *ctdb, TDB_DATA indata);
1276 int32_t ctdb_control_db_get_health(struct ctdb_context *ctdb,
1277 TDB_DATA indata,
1278 TDB_DATA *outdata);
1279
1280
1281 int ctdb_repack(struct ctdb_context *ctdb, int argc, const char **argv);
1282
1283 int32_t ctdb_monitoring_mode(struct ctdb_context *ctdb);
1284 bool ctdb_stopped_monitoring(struct ctdb_context *ctdb);
1285 int ctdb_set_child_logging(struct ctdb_context *ctdb);
1286 void lockdown_memory(bool valgrinding);
1287
1288 struct client_async_data {
1289 enum ctdb_controls opcode;
1290 bool dont_log_errors;
1291 uint32_t count;
1292 uint32_t fail_count;
1293 client_async_callback callback;
1294 client_async_callback fail_callback;
1295 void *callback_data;
1296 };
1297 void ctdb_client_async_add(struct client_async_data *data, struct ctdb_client_control_state *state);
1298 int ctdb_client_async_wait(struct ctdb_context *ctdb, struct client_async_data *data);
1299 int ctdb_client_async_control(struct ctdb_context *ctdb,
1300 enum ctdb_controls opcode,
1301 uint32_t *nodes,
1302 uint64_t srvid,
1303 struct timeval timeout,
1304 bool dont_log_errors,
1305 TDB_DATA data,
1306 client_async_callback client_callback,
1307 client_async_callback fail_callback,
1308 void *callback_data);
1309
1310 struct ctdb_node_map *
1311 ctdb_node_list_to_map(struct ctdb_node **nodes, uint32_t num_nodes,
1312 TALLOC_CTX *mem_ctx);
1313 struct ctdb_node_map *ctdb_read_nodes_file(TALLOC_CTX *mem_ctx,
1314 const char *nlist);
1315 void ctdb_load_nodes_file(struct ctdb_context *ctdb);
1316
1317 int ctdb_control_reload_nodes_file(struct ctdb_context *ctdb, uint32_t opcode);
1318
1319 int32_t ctdb_dump_memory(struct ctdb_context *ctdb, TDB_DATA *outdata);
1320 int32_t ctdb_control_get_capabilities(struct ctdb_context *ctdb, TDB_DATA *outdata);
1321
1322 char *ctdb_addr_to_str(ctdb_sock_addr *addr);
1323 unsigned ctdb_addr_to_port(ctdb_sock_addr *addr);
1324 void ctdb_canonicalize_ip(const ctdb_sock_addr *ip, ctdb_sock_addr *cip);
1325
1326 int32_t ctdb_control_recd_ping(struct ctdb_context *ctdb);
1327 int32_t ctdb_control_set_recmaster(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata);
1328
1329 extern int script_log_level;
1330 extern bool fast_start;
1331 extern const char *ctdbd_pidfile;
1332
1333 int32_t ctdb_control_get_event_script_status(struct ctdb_context *ctdb,
1334 uint32_t call_type,
1335 TDB_DATA *outdata);
1336
1337 int ctdb_ctrl_report_recd_lock_latency(struct ctdb_context *ctdb, struct timeval timeout, double latency);
1338
1339 int32_t ctdb_control_stop_node(struct ctdb_context *ctdb);
1340 int32_t ctdb_control_continue_node(struct ctdb_context *ctdb);
1341
1342 void ctdb_stop_vacuuming(struct ctdb_context *ctdb);
1343 int ctdb_vacuum_init(struct ctdb_db_context *ctdb_db);
1344
1345 int32_t ctdb_control_enable_script(struct ctdb_context *ctdb, TDB_DATA indata);
1346 int32_t ctdb_control_disable_script(struct ctdb_context *ctdb, TDB_DATA indata);
1347
1348 void ctdb_local_node_got_banned(struct ctdb_context *ctdb);
1349 int32_t ctdb_control_set_ban_state(struct ctdb_context *ctdb, TDB_DATA indata);
1350 int32_t ctdb_control_get_ban_state(struct ctdb_context *ctdb, TDB_DATA *outdata);
1351 int32_t ctdb_control_set_db_priority(struct ctdb_context *ctdb, TDB_DATA indata,
1352 uint32_t client_id);
1353 void ctdb_ban_self(struct ctdb_context *ctdb);
1354
1355 int32_t ctdb_control_register_notify(struct ctdb_context *ctdb, uint32_t client_id, TDB_DATA indata);
1356
1357 int32_t ctdb_control_deregister_notify(struct ctdb_context *ctdb, uint32_t client_id, TDB_DATA indata);
1358
1359 struct ctdb_log_state *ctdb_vfork_with_logging(TALLOC_CTX *mem_ctx,
1360 struct ctdb_context *ctdb,
1361 const char *log_prefix,
1362 const char *helper,
1363 int helper_argc,
1364 const char **helper_argv,
1365 void (*logfn)(const char *, uint16_t, void *),
1366 void *logfn_private, pid_t *pid);
1367
1368
1369 int32_t ctdb_control_process_exists(struct ctdb_context *ctdb, pid_t pid);
1370 struct ctdb_client *ctdb_find_client_by_pid(struct ctdb_context *ctdb, pid_t pid);
1371
1372 int32_t ctdb_control_get_db_seqnum(struct ctdb_context *ctdb,
1373 TDB_DATA indata,
1374 TDB_DATA *outdata);
1375
1376 int ctdb_load_persistent_health(struct ctdb_context *ctdb,
1377 struct ctdb_db_context *ctdb_db);
1378 int ctdb_update_persistent_health(struct ctdb_context *ctdb,
1379 struct ctdb_db_context *ctdb_db,
1380 const char *reason,/* NULL means healthy */
1381 int num_healthy_nodes);
1382 int ctdb_recheck_persistent_health(struct ctdb_context *ctdb);
1383
1384 void ctdb_run_notification_script(struct ctdb_context *ctdb, const char *event);
1385
1386 int verify_remote_ip_allocation(struct ctdb_context *ctdb,
1387 struct ctdb_all_public_ips *ips,
1388 uint32_t pnn);
1389 int update_ip_assignment_tree(struct ctdb_context *ctdb,
1390 struct ctdb_public_ip *ip);
1391 void clear_ip_assignment_tree(struct ctdb_context *ctdb);
1392
1393 int ctdb_init_tevent_logging(struct ctdb_context *ctdb);
1394
1395 int ctdb_statistics_init(struct ctdb_context *ctdb);
1396
1397 int32_t ctdb_control_get_stat_history(struct ctdb_context *ctdb,
1398 struct ctdb_req_control *c,
1399 TDB_DATA *outdata);
1400
1401 int ctdb_deferred_drop_all_ips(struct ctdb_context *ctdb);
1402
1403 int ctdb_process_deferred_attach(struct ctdb_context *ctdb);
1404
1405 /**
1406 * structure to pass to a schedule_for_deletion_control
1407 */
1408 struct ctdb_control_schedule_for_deletion {
1409 uint32_t db_id;
1410 struct ctdb_ltdb_header hdr;
1411 uint32_t keylen;
1412 uint8_t key[1]; /* key[] */
1413 };
1414
1415 int32_t ctdb_control_schedule_for_deletion(struct ctdb_context *ctdb,
1416 TDB_DATA indata);
1417
1418
1419 int32_t ctdb_local_schedule_for_deletion(struct ctdb_db_context *ctdb_db,
1420 const struct ctdb_ltdb_header *hdr,
1421 TDB_DATA key);
1422
1423 void ctdb_local_remove_from_delete_queue(struct ctdb_db_context *ctdb_db,
1424 const struct ctdb_ltdb_header *hdr,
1425 const TDB_DATA key);
1426
1427 struct ctdb_ltdb_header *ctdb_header_from_record_handle(struct ctdb_record_handle *h);
1428
1429 int ctdb_trackingdb_add_pnn(struct ctdb_context *ctdb, TDB_DATA *data, uint32_t pnn);
1430
1431 typedef void (*ctdb_trackingdb_cb)(struct ctdb_context *ctdb, uint32_t pnn, void *private_data);
1432
1433 void ctdb_trackingdb_traverse(struct ctdb_context *ctdb, TDB_DATA data, ctdb_trackingdb_cb cb, void *private_data);
1434
1435 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);
1436
1437 typedef void (*deferred_requeue_fn)(void *call_context, struct ctdb_req_header *hdr);
1438
1439 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);
1440
1441 int ctdb_set_db_readonly(struct ctdb_context *ctdb, struct ctdb_db_context *ctdb_db);
1442
1443 int ctdb_null_func(struct ctdb_call_info *call);
1444
1445 int ctdb_fetch_func(struct ctdb_call_info *call);
1446
1447 int ctdb_fetch_with_header_func(struct ctdb_call_info *call);
1448
1449 void ctdb_db_statistics_reset(struct ctdb_db_context *ctdb_db);
1450
1451 int32_t ctdb_control_get_db_statistics(struct ctdb_context *ctdb,
1452 uint32_t db_id,
1453 TDB_DATA *outdata);
1454
1455 int ctdb_set_db_sticky(struct ctdb_context *ctdb, struct ctdb_db_context *ctdb_db);
1456
1457 /*
1458 description for a message to reload all ips via recovery master/daemon
1459 */
1460 struct reloadips_all_reply {
1461 uint32_t pnn;
1462 uint64_t srvid;
1463 };
1464
1465 int32_t ctdb_control_reload_public_ips(struct ctdb_context *ctdb, struct ctdb_req_control *c, bool *async_reply);
1466
1467 /* from server/ctdb_lock.c */
1468 struct lock_request;
1469
1470 int ctdb_lockall_mark_prio(struct ctdb_context *ctdb, uint32_t priority);
1471 int ctdb_lockall_unmark_prio(struct ctdb_context *ctdb, uint32_t priority);
1472
1473 struct lock_request *ctdb_lock_record(TALLOC_CTX *mem_ctx,
1474 struct ctdb_db_context *ctdb_db,
1475 TDB_DATA key,
1476 bool auto_mark,
1477 void (*callback)(void *, bool),
1478 void *private_data);
1479
1480 struct lock_request *ctdb_lock_db(TALLOC_CTX *mem_ctx,
1481 struct ctdb_db_context *ctdb_db,
1482 bool auto_mark,
1483 void (*callback)(void *, bool),
1484 void *private_data);
1485
1486 struct lock_request *ctdb_lock_alldb_prio(TALLOC_CTX *mem_ctx,
1487 struct ctdb_context *ctdb,
1488 uint32_t priority,
1489 bool auto_mark,
1490 void (*callback)(void *, bool),
1491 void *private_data);
1492
1493 struct lock_request *ctdb_lock_alldb(TALLOC_CTX *mem_ctx,
1494 struct ctdb_context *ctdb,
1495 bool auto_mark,
1496 void (*callback)(void *, bool),
1497 void *private_data);
1498
1499 int mkdir_p(const char *dir, int mode);
1500 void mkdir_p_or_die(const char *dir, int mode);
1501
1502 ssize_t sys_read(int fd, void *buf, size_t count);
1503 ssize_t sys_write(int fd, const void *buf, size_t count);
1504
1505 #endif
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