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smbd: Clarify smb2 lock checks
[Samba.git] / ctdb / include / ctdb_private.h
blob0481e434297547565123a77489dd11feb13e7afb
1 /*
2 ctdb database library
3
4 Copyright (C) Andrew Tridgell 2006
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, see <http://www.gnu.org/licenses/>.
18 */
19
20 #ifndef _CTDB_PRIVATE_H
21 #define _CTDB_PRIVATE_H
22
23 #include "ctdb_client.h"
24 #include <sys/socket.h>
25
26 /*
27 * Structures to support SRVID requests and replies
28 */
29 struct srvid_request {
30 uint32_t pnn;
31 uint64_t srvid;
32 };
33
34 struct srvid_request_data {
35 uint32_t pnn;
36 uint64_t srvid;
37 uint32_t data;
38 };
39
40 /*
41 * pid of the ctdbd daemon
42 */
43 extern pid_t ctdbd_pid;
44
45 /*
46 a tcp connection description
47 also used by tcp_add and tcp_remove controls
48 */
49 struct ctdb_tcp_connection {
50 ctdb_sock_addr src_addr;
51 ctdb_sock_addr dst_addr;
52 };
53
54 /* the wire representation for a tcp tickle array */
55 struct ctdb_tcp_wire_array {
56 uint32_t num;
57 struct ctdb_tcp_connection connections[1];
58 };
59
60 /* the list of tcp tickles used by get/set tcp tickle list */
61 struct ctdb_control_tcp_tickle_list {
62 ctdb_sock_addr addr;
63 struct ctdb_tcp_wire_array tickles;
64 };
65
66 /*
67 array of tcp connections
68 */
69 struct ctdb_tcp_array {
70 uint32_t num;
71 struct ctdb_tcp_connection *connections;
72 };
73
74
75 /* all tunable variables go in here */
76 struct ctdb_tunable {
77 uint32_t max_redirect_count;
78 uint32_t seqnum_interval; /* unit is ms */
79 uint32_t control_timeout;
80 uint32_t traverse_timeout;
81 uint32_t keepalive_interval;
82 uint32_t keepalive_limit;
83 uint32_t recover_timeout;
84 uint32_t recover_interval;
85 uint32_t election_timeout;
86 uint32_t takeover_timeout;
87 uint32_t monitor_interval;
88 uint32_t tickle_update_interval;
89 uint32_t script_timeout;
90 uint32_t script_timeout_count; /* allow dodgy scripts to hang this many times in a row before we mark the node unhealthy */
91 uint32_t script_unhealthy_on_timeout; /* obsolete */
92 uint32_t recovery_grace_period;
93 uint32_t recovery_ban_period;
94 uint32_t database_hash_size;
95 uint32_t database_max_dead;
96 uint32_t rerecovery_timeout;
97 uint32_t enable_bans;
98 uint32_t deterministic_public_ips;
99 uint32_t reclock_ping_period;
100 uint32_t no_ip_failback;
101 uint32_t disable_ip_failover;
102 uint32_t verbose_memory_names;
103 uint32_t recd_ping_timeout;
104 uint32_t recd_ping_failcount;
105 uint32_t log_latency_ms;
106 uint32_t reclock_latency_ms;
107 uint32_t recovery_drop_all_ips;
108 uint32_t verify_recovery_lock;
109 uint32_t vacuum_interval;
110 uint32_t vacuum_max_run_time;
111 uint32_t repack_limit;
112 uint32_t vacuum_limit;
113 uint32_t max_queue_depth_drop_msg;
114 uint32_t use_status_events_for_monitoring;
115 uint32_t allow_unhealthy_db_read;
116 uint32_t stat_history_interval;
117 uint32_t deferred_attach_timeout;
118 uint32_t vacuum_fast_path_count;
119 uint32_t lcp2_public_ip_assignment;
120 uint32_t allow_client_db_attach;
121 uint32_t recover_pdb_by_seqnum;
122 uint32_t deferred_rebalance_on_node_add;
123 uint32_t fetch_collapse;
124 uint32_t hopcount_make_sticky;
125 uint32_t sticky_duration;
126 uint32_t sticky_pindown;
127 uint32_t no_ip_takeover;
128 uint32_t db_record_count_warn;
129 uint32_t db_record_size_warn;
130 uint32_t db_size_warn;
131 uint32_t pulldb_preallocation_size;
132 uint32_t no_ip_host_on_all_disabled;
133 uint32_t samba3_hack;
134 };
135
136 /*
137 an installed ctdb remote call
138 */
139 struct ctdb_registered_call {
140 struct ctdb_registered_call *next, *prev;
141 uint32_t id;
142 ctdb_fn_t fn;
143 };
144
145 /*
146 this address structure might need to be generalised later for some
147 transports
148 */
149 struct ctdb_address {
150 const char *address;
151 int port;
152 };
153
154 /*
155 check that a pnn is valid
156 */
157 #define ctdb_validate_pnn(ctdb, pnn) (((uint32_t)(pnn)) < (ctdb)->num_nodes)
158
159
160 /* called from the queue code when a packet comes in. Called with data==NULL
161 on error */
162 typedef void (*ctdb_queue_cb_fn_t)(uint8_t *data, size_t length,
163 void *private_data);
164
165 /* used for callbacks in ctdb_control requests */
166 typedef void (*ctdb_control_callback_fn_t)(struct ctdb_context *,
167 int32_t status, TDB_DATA data,
168 const char *errormsg,
169 void *private_data);
170 /*
171 structure describing a connected client in the daemon
172 */
173 struct ctdb_client {
174 struct ctdb_context *ctdb;
175 int fd;
176 struct ctdb_queue *queue;
177 uint32_t client_id;
178 pid_t pid;
179 struct ctdb_tcp_list *tcp_list;
180 uint32_t db_id;
181 uint32_t num_persistent_updates;
182 struct ctdb_client_notify_list *notify;
183 };
184
185 struct ctdb_iface;
186
187 /* state associated with a public ip address */
188 struct ctdb_vnn {
189 struct ctdb_vnn *prev, *next;
190
191 struct ctdb_iface *iface;
192 const char **ifaces;
193 ctdb_sock_addr public_address;
194 uint8_t public_netmask_bits;
195
196 /* the node number that is serving this public address, if any.
197 If no node serves this ip it is set to -1 */
198 int32_t pnn;
199
200 /* List of clients to tickle for this public address */
201 struct ctdb_tcp_array *tcp_array;
202
203 /* whether we need to update the other nodes with changes to our list
204 of connected clients */
205 bool tcp_update_needed;
206
207 /* a context to hang sending gratious arp events off */
208 TALLOC_CTX *takeover_ctx;
209
210 struct ctdb_kill_tcp *killtcp;
211
212 /* Set to true any time an update to this VNN is in flight.
213 This helps to avoid races. */
214 bool update_in_flight;
215
216 /* If CTDB_CONTROL_DEL_PUBLIC_IP is received for this IP
217 * address then this flag is set. It will be deleted in the
218 * release IP callback. */
219 bool delete_pending;
220 };
221
222 /*
223 state associated with one node
224 */
225 struct ctdb_node {
226 struct ctdb_context *ctdb;
227 struct ctdb_address address;
228 const char *name; /* for debug messages */
229 void *private_data; /* private to transport */
230 uint32_t pnn;
231 uint32_t flags;
232
233 /* used by the dead node monitoring */
234 uint32_t dead_count;
235 uint32_t rx_cnt;
236 uint32_t tx_cnt;
237
238 /* used to track node capabilities, is only valid/tracked inside the
239 recovery daemon.
240 */
241 uint32_t capabilities;
242
243 /* a list of controls pending to this node, so we can time them out quickly
244 if the node becomes disconnected */
245 struct daemon_control_state *pending_controls;
246
247 /* used by the recovery daemon when distributing ip addresses
248 across the nodes. it needs to know which public ip's can be handled
249 by each node.
250 */
251 struct ctdb_all_public_ips *known_public_ips;
252 struct ctdb_all_public_ips *available_public_ips;
253 /* used by the recovery dameon to track when a node should be banned */
254 struct ctdb_banning_state *ban_state;
255 };
256
257 /*
258 transport specific methods
259 */
260 struct ctdb_methods {
261 int (*initialise)(struct ctdb_context *); /* initialise transport structures */
262 int (*start)(struct ctdb_context *); /* start the transport */
263 int (*add_node)(struct ctdb_node *); /* setup a new node */
264 int (*connect_node)(struct ctdb_node *); /* connect to node */
265 int (*queue_pkt)(struct ctdb_node *, uint8_t *data, uint32_t length);
266 void *(*allocate_pkt)(TALLOC_CTX *mem_ctx, size_t );
267 void (*shutdown)(struct ctdb_context *); /* shutdown transport */
268 void (*restart)(struct ctdb_node *); /* stop and restart the connection */
269 };
270
271 /*
272 transport calls up to the ctdb layer
273 */
274 struct ctdb_upcalls {
275 /* recv_pkt is called when a packet comes in */
276 void (*recv_pkt)(struct ctdb_context *, uint8_t *data, uint32_t length);
277
278 /* node_dead is called when an attempt to send to a node fails */
279 void (*node_dead)(struct ctdb_node *);
280
281 /* node_connected is called when a connection to a node is established */
282 void (*node_connected)(struct ctdb_node *);
283 };
284
285 /* list of message handlers - needs to be changed to a more efficient data
286 structure so we can find a message handler given a srvid quickly */
287 struct ctdb_message_list_header {
288 struct ctdb_message_list_header *next, *prev;
289 struct ctdb_context *ctdb;
290 uint64_t srvid;
291 struct ctdb_message_list *m;
292 };
293 struct ctdb_message_list {
294 struct ctdb_message_list *next, *prev;
295 struct ctdb_message_list_header *h;
296 ctdb_msg_fn_t message_handler;
297 void *message_private;
298 };
299
300 /* additional data required for the daemon mode */
301 struct ctdb_daemon_data {
302 int sd;
303 char *name;
304 struct ctdb_queue *queue;
305 };
306
307
308 #define CTDB_UPDATE_STAT(ctdb, counter, value) \
309 { \
310 if (value > ctdb->statistics.counter) { \
311 ctdb->statistics.counter = c->hopcount; \
312 } \
313 if (value > ctdb->statistics_current.counter) { \
314 ctdb->statistics_current.counter = c->hopcount; \
315 } \
316 }
317
318 #define CTDB_INCREMENT_STAT(ctdb, counter) \
319 { \
320 ctdb->statistics.counter++; \
321 ctdb->statistics_current.counter++; \
322 }
323
324 #define CTDB_DECREMENT_STAT(ctdb, counter) \
325 { \
326 if (ctdb->statistics.counter > 0) \
327 ctdb->statistics.counter--; \
328 if (ctdb->statistics_current.counter > 0) \
329 ctdb->statistics_current.counter--; \
330 }
331
332 #define CTDB_INCREMENT_DB_STAT(ctdb_db, counter) \
333 { \
334 ctdb_db->statistics.counter++; \
335 }
336
337 #define CTDB_DECREMENT_DB_STAT(ctdb_db, counter) \
338 { \
339 if (ctdb_db->statistics.counter > 0) \
340 ctdb_db->statistics.counter--; \
341 }
342
343 #define CTDB_UPDATE_RECLOCK_LATENCY(ctdb, name, counter, value) \
344 { \
345 if (value > ctdb->statistics.counter.max) \
346 ctdb->statistics.counter.max = value; \
347 if (value > ctdb->statistics_current.counter.max) \
348 ctdb->statistics_current.counter.max = value; \
349 \
350 if (ctdb->statistics.counter.num == 0 || \
351 value < ctdb->statistics.counter.min) \
352 ctdb->statistics.counter.min = value; \
353 if (ctdb->statistics_current.counter.num == 0 || \
354 value < ctdb->statistics_current.counter.min) \
355 ctdb->statistics_current.counter.min = value; \
356 \
357 ctdb->statistics.counter.total += value; \
358 ctdb->statistics_current.counter.total += value; \
359 \
360 ctdb->statistics.counter.num++; \
361 ctdb->statistics_current.counter.num++; \
362 \
363 if (ctdb->tunable.reclock_latency_ms != 0) { \
364 if (value*1000 > ctdb->tunable.reclock_latency_ms) { \
365 DEBUG(DEBUG_ERR, \
366 ("High RECLOCK latency %fs for operation %s\n", \
367 value, name)); \
368 } \
369 } \
370 }
371
372 #define CTDB_UPDATE_DB_LATENCY(ctdb_db, operation, counter, value) \
373 { \
374 if (value > ctdb_db->statistics.counter.max) \
375 ctdb_db->statistics.counter.max = value; \
376 if (ctdb_db->statistics.counter.num == 0 || \
377 value < ctdb_db->statistics.counter.min) \
378 ctdb_db->statistics.counter.min = value; \
379 \
380 ctdb_db->statistics.counter.total += value; \
381 ctdb_db->statistics.counter.num++; \
382 \
383 if (ctdb_db->ctdb->tunable.log_latency_ms != 0) { \
384 if (value*1000 > ctdb_db->ctdb->tunable.log_latency_ms) { \
385 DEBUG(DEBUG_ERR, \
386 ("High latency %.6fs for operation %s on database %s\n",\
387 value, operation, ctdb_db->db_name)); \
388 } \
389 } \
390 }
391
392 #define CTDB_UPDATE_LATENCY(ctdb, db, operation, counter, t) \
393 { \
394 double l = timeval_elapsed(&t); \
395 \
396 if (l > ctdb->statistics.counter.max) \
397 ctdb->statistics.counter.max = l; \
398 if (l > ctdb->statistics_current.counter.max) \
399 ctdb->statistics_current.counter.max = l; \
400 \
401 if (ctdb->statistics.counter.num == 0 || \
402 l < ctdb->statistics.counter.min) \
403 ctdb->statistics.counter.min = l; \
404 if (ctdb->statistics_current.counter.num == 0 || \
405 l < ctdb->statistics_current.counter.min) \
406 ctdb->statistics_current.counter.min = l; \
407 \
408 ctdb->statistics.counter.total += l; \
409 ctdb->statistics_current.counter.total += l; \
410 \
411 ctdb->statistics.counter.num++; \
412 ctdb->statistics_current.counter.num++; \
413 \
414 if (ctdb->tunable.log_latency_ms != 0) { \
415 if (l*1000 > ctdb->tunable.log_latency_ms) { \
416 DEBUG(DEBUG_WARNING, \
417 ("High latency %.6fs for operation %s on database %s\n",\
418 l, operation, db->db_name)); \
419 } \
420 } \
421 }
422
423
424
425 /* a structure that contains the elements required for the write record
426 control
427 */
428 struct ctdb_write_record {
429 uint32_t dbid;
430 uint32_t keylen;
431 uint32_t datalen;
432 unsigned char blob[1];
433 };
434
435 enum ctdb_freeze_mode {CTDB_FREEZE_NONE, CTDB_FREEZE_PENDING, CTDB_FREEZE_FROZEN};
436
437 enum ctdb_runstate {
438 CTDB_RUNSTATE_UNKNOWN,
439 CTDB_RUNSTATE_INIT,
440 CTDB_RUNSTATE_SETUP,
441 CTDB_RUNSTATE_FIRST_RECOVERY,
442 CTDB_RUNSTATE_STARTUP,
443 CTDB_RUNSTATE_RUNNING,
444 CTDB_RUNSTATE_SHUTDOWN,
445 };
446
447 const char *runstate_to_string(enum ctdb_runstate runstate);
448 enum ctdb_runstate runstate_from_string(const char *label);
449 void ctdb_set_runstate(struct ctdb_context *ctdb, enum ctdb_runstate runstate);
450
451 void ctdb_shutdown_sequence(struct ctdb_context *ctdb, int exit_code);
452
453 #define CTDB_MONITORING_ACTIVE 0
454 #define CTDB_MONITORING_DISABLED 1
455
456 #define NUM_DB_PRIORITIES 3
457 /* main state of the ctdb daemon */
458 struct ctdb_context {
459 struct tevent_context *ev;
460 struct timeval ctdbd_start_time;
461 struct timeval last_recovery_started;
462 struct timeval last_recovery_finished;
463 uint32_t recovery_mode;
464 TALLOC_CTX *tickle_update_context;
465 TALLOC_CTX *keepalive_ctx;
466 TALLOC_CTX *check_public_ifaces_ctx;
467 struct ctdb_tunable tunable;
468 enum ctdb_freeze_mode freeze_mode[NUM_DB_PRIORITIES+1];
469 struct ctdb_freeze_handle *freeze_handles[NUM_DB_PRIORITIES+1];
470 bool freeze_transaction_started;
471 uint32_t freeze_transaction_id;
472 struct ctdb_address address;
473 const char *name;
474 const char *db_directory;
475 const char *db_directory_persistent;
476 const char *db_directory_state;
477 struct tdb_wrap *db_persistent_health;
478 uint32_t db_persistent_startup_generation;
479 uint64_t db_persistent_check_errors;
480 uint64_t max_persistent_check_errors;
481 const char *transport;
482 char *recovery_lock_file;
483 int recovery_lock_fd;
484 uint32_t pnn; /* our own pnn */
485 uint32_t num_nodes;
486 uint32_t num_connected;
487 unsigned flags;
488 uint32_t capabilities;
489 struct idr_context *idr;
490 int lastid;
491 struct ctdb_node **nodes; /* array of nodes in the cluster - indexed by vnn */
492 struct ctdb_vnn *vnn; /* list of public ip addresses and interfaces */
493 struct ctdb_vnn *single_ip_vnn; /* a structure for the single ip */
494 struct ctdb_iface *ifaces; /* list of local interfaces */
495 char *err_msg;
496 const struct ctdb_methods *methods; /* transport methods */
497 const struct ctdb_upcalls *upcalls; /* transport upcalls */
498 void *private_data; /* private to transport */
499 struct ctdb_db_context *db_list;
500 struct ctdb_message_list_header *message_list_header;
501 struct tdb_context *message_list_indexdb;
502 struct ctdb_daemon_data daemon;
503 struct ctdb_statistics statistics;
504 struct ctdb_statistics statistics_current;
505 #define MAX_STAT_HISTORY 100
506 struct ctdb_statistics statistics_history[MAX_STAT_HISTORY];
507 struct ctdb_vnn_map *vnn_map;
508 uint32_t num_clients;
509 uint32_t recovery_master;
510 struct ctdb_call_state *pending_calls;
511 struct ctdb_client_ip *client_ip_list;
512 bool do_checkpublicip;
513 struct trbt_tree *server_ids;
514 bool do_setsched;
515 const char *event_script_dir;
516 const char *notification_script;
517 const char *default_public_interface;
518 pid_t ctdbd_pid;
519 pid_t recoverd_pid;
520 pid_t syslogd_pid;
521 enum ctdb_runstate runstate;
522 struct ctdb_monitor_state *monitor;
523 struct ctdb_log_state *log;
524 int start_as_disabled;
525 int start_as_stopped;
526 bool valgrinding;
527 uint32_t event_script_timeouts; /* counting how many consecutive times an eventscript has timedout */
528 uint32_t *recd_ping_count;
529 TALLOC_CTX *recd_ctx; /* a context used to track recoverd monitoring events */
530 TALLOC_CTX *release_ips_ctx; /* a context used to automatically drop all IPs if we fail to recover the node */
531
532 TALLOC_CTX *event_script_ctx;
533 int active_events;
534
535 struct ctdb_event_script_state *current_monitor;
536 struct ctdb_scripts_wire *last_status[CTDB_EVENT_MAX];
537
538 TALLOC_CTX *banning_ctx;
539
540 struct ctdb_vacuum_child_context *vacuumers;
541
542 /* mapping from pid to ctdb_client * */
543 struct ctdb_client_pid_list *client_pids;
544
545 /* used in the recovery daemon to remember the ip allocation */
546 struct trbt_tree *ip_tree;
547
548 /* Used to defer db attach requests while in recovery mode */
549 struct ctdb_deferred_attach_context *deferred_attach;
550
551 /* if we are a child process, do we have a domain socket to send controls on */
552 bool can_send_controls;
553
554 /* list of event script callback functions that are active */
555 struct event_script_callback *script_callbacks;
556
557 struct ctdb_reloadips_handle *reload_ips;
558
559 const char *nodes_file;
560 const char *public_addresses_file;
561 struct trbt_tree *child_processes;
562
563 /* Used for locking record/db/alldb */
564 int lock_num_pending;
565 struct lock_context *lock_current;
566 struct lock_context *lock_pending;
567 };
568
569 struct ctdb_db_context {
570 struct ctdb_db_context *next, *prev;
571 struct ctdb_context *ctdb;
572 uint32_t db_id;
573 uint32_t priority;
574 bool persistent;
575 bool readonly; /* Do we support read-only delegations ? */
576 bool sticky; /* Do we support sticky records ? */
577 const char *db_name;
578 const char *db_path;
579 struct tdb_wrap *ltdb;
580 struct tdb_context *rottdb; /* ReadOnly tracking TDB */
581 struct ctdb_registered_call *calls; /* list of registered calls */
582 uint32_t seqnum;
583 struct timed_event *seqnum_update;
584 struct ctdb_traverse_local_handle *traverse;
585 struct ctdb_vacuum_handle *vacuum_handle;
586 char *unhealthy_reason;
587 int pending_requests;
588 struct revokechild_handle *revokechild_active;
589 struct ctdb_persistent_state *persistent_state;
590 struct trbt_tree *delete_queue;
591 struct trbt_tree *sticky_records;
592 int (*ctdb_ltdb_store_fn)(struct ctdb_db_context *ctdb_db,
593 TDB_DATA key,
594 struct ctdb_ltdb_header *header,
595 TDB_DATA data);
596
597 /* used to track which records we are currently fetching
598 so we can avoid sending duplicate fetch requests
599 */
600 struct trbt_tree *deferred_fetch;
601
602 struct ctdb_db_statistics statistics;
603
604 int lock_num_current;
605 };
606
607
608 #define CTDB_NO_MEMORY(ctdb, p) do { if (!(p)) { \
609 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
610 ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
611 return -1; }} while (0)
612
613 #define CTDB_NO_MEMORY_VOID(ctdb, p) do { if (!(p)) { \
614 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
615 ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
616 return; }} while (0)
617
618 #define CTDB_NO_MEMORY_NULL(ctdb, p) do { if (!(p)) { \
619 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
620 ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
621 return NULL; }} while (0)
622
623 #define CTDB_NO_MEMORY_FATAL(ctdb, p) do { if (!(p)) { \
624 DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
625 ctdb_fatal(ctdb, "Out of memory in " __location__ ); \
626 }} while (0)
627
628 /*
629 structure passed in set_call control
630 */
631 struct ctdb_control_set_call {
632 uint32_t db_id;
633 ctdb_fn_t fn;
634 uint32_t id;
635 };
636
637 /*
638 struct for kill_tcp control
639 */
640 struct ctdb_control_killtcp {
641 ctdb_sock_addr src_addr;
642 ctdb_sock_addr dst_addr;
643 };
644
645 /*
646 struct holding a ctdb_sock_addr and an interface name,
647 used to add/remove public addresses
648 */
649 struct ctdb_control_ip_iface {
650 ctdb_sock_addr addr;
651 uint32_t mask;
652 uint32_t len;
653 char iface[1];
654 };
655
656 /*
657 struct holding a ctdb_sock_addr and an interface name,
658 used for send_gratious_arp
659 */
660 struct ctdb_control_gratious_arp {
661 ctdb_sock_addr addr;
662 uint32_t mask;
663 uint32_t len;
664 char iface[1];
665 };
666
667 /*
668 persistent store control - update this record on all other nodes
669 */
670 struct ctdb_control_persistent_store {
671 uint32_t db_id;
672 uint32_t len;
673 uint8_t data[1];
674 };
675
676 /*
677 structure used for CTDB_SRVID_NODE_FLAGS_CHANGED
678 */
679 struct ctdb_node_flag_change {
680 uint32_t pnn;
681 uint32_t new_flags;
682 uint32_t old_flags;
683 };
684
685 /*
686 struct for admin setting a ban
687 */
688 struct ctdb_ban_info {
689 uint32_t pnn;
690 uint32_t ban_time;
691 };
692
693 enum call_state {CTDB_CALL_WAIT, CTDB_CALL_DONE, CTDB_CALL_ERROR};
694
695 #define CTDB_LMASTER_ANY 0xffffffff
696
697 /*
698 state of a in-progress ctdb call
699 */
700 struct ctdb_call_state {
701 struct ctdb_call_state *next, *prev;
702 enum call_state state;
703 uint32_t reqid;
704 struct ctdb_req_call *c;
705 struct ctdb_db_context *ctdb_db;
706 const char *errmsg;
707 struct ctdb_call *call;
708 uint32_t generation;
709 struct {
710 void (*fn)(struct ctdb_call_state *);
711 void *private_data;
712 } async;
713 };
714
715
716 /* used for fetch_lock */
717 struct ctdb_fetch_handle {
718 struct ctdb_db_context *ctdb_db;
719 TDB_DATA key;
720 TDB_DATA *data;
721 struct ctdb_ltdb_header header;
722 };
723
724 /* internal prototypes */
725 void ctdb_set_error(struct ctdb_context *ctdb, const char *fmt, ...) PRINTF_ATTRIBUTE(2,3);
726 void ctdb_fatal(struct ctdb_context *ctdb, const char *msg);
727 void ctdb_die(struct ctdb_context *ctdb, const char *msg);
728 void ctdb_external_trace(void);
729 bool ctdb_same_address(struct ctdb_address *a1, struct ctdb_address *a2);
730 int ctdb_parse_address(struct ctdb_context *ctdb,
731 TALLOC_CTX *mem_ctx, const char *str,
732 struct ctdb_address *address);
733 bool ctdb_same_ip(const ctdb_sock_addr *ip1, const ctdb_sock_addr *ip2);
734 bool ctdb_same_sockaddr(const ctdb_sock_addr *ip1, const ctdb_sock_addr *ip2);
735 uint32_t ctdb_hash(const TDB_DATA *key);
736 uint32_t ctdb_hash_string(const char *str);
737 void ctdb_request_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
738 void ctdb_request_dmaster(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
739 void ctdb_request_message(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
740 void ctdb_reply_dmaster(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
741 void ctdb_reply_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
742 void ctdb_reply_error(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
743
744 uint32_t ctdb_lmaster(struct ctdb_context *ctdb, const TDB_DATA *key);
745 int ctdb_ltdb_fetch(struct ctdb_db_context *ctdb_db,
746 TDB_DATA key, struct ctdb_ltdb_header *header,
747 TALLOC_CTX *mem_ctx, TDB_DATA *data);
748 int ctdb_ltdb_store(struct ctdb_db_context *ctdb_db, TDB_DATA key,
749 struct ctdb_ltdb_header *header, TDB_DATA data);
750 int ctdb_ltdb_delete(struct ctdb_db_context *ctdb_db, TDB_DATA key);
751 int ctdb_ltdb_fetch_with_header(struct ctdb_db_context *ctdb_db,
752 TDB_DATA key, struct ctdb_ltdb_header *header,
753 TALLOC_CTX *mem_ctx, TDB_DATA *data);
754 int32_t ctdb_control_start_persistent_update(struct ctdb_context *ctdb,
755 struct ctdb_req_control *c,
756 TDB_DATA recdata);
757 int32_t ctdb_control_cancel_persistent_update(struct ctdb_context *ctdb,
758 struct ctdb_req_control *c,
759 TDB_DATA recdata);
760 void ctdb_queue_packet(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
761 void ctdb_queue_packet_opcode(struct ctdb_context *ctdb, struct ctdb_req_header *hdr, unsigned opcode);
762 int ctdb_ltdb_lock_requeue(struct ctdb_db_context *ctdb_db,
763 TDB_DATA key, struct ctdb_req_header *hdr,
764 void (*recv_pkt)(void *, struct ctdb_req_header *),
765 void *recv_context, bool ignore_generation);
766 int ctdb_ltdb_lock_fetch_requeue(struct ctdb_db_context *ctdb_db,
767 TDB_DATA key, struct ctdb_ltdb_header *header,
768 struct ctdb_req_header *hdr, TDB_DATA *data,
769 void (*recv_pkt)(void *, struct ctdb_req_header *),
770 void *recv_context, bool ignore_generation);
771 void ctdb_input_pkt(struct ctdb_context *ctdb, struct ctdb_req_header *);
772
773 struct ctdb_call_state *ctdb_call_local_send(struct ctdb_db_context *ctdb_db,
774 struct ctdb_call *call,
775 struct ctdb_ltdb_header *header,
776 TDB_DATA *data);
777
778
779 int ctdb_start_daemon(struct ctdb_context *ctdb, bool do_fork,
780 bool use_syslog);
781 struct ctdb_call_state *ctdbd_call_send(struct ctdb_db_context *ctdb_db, struct ctdb_call *call);
782 int ctdbd_call_recv(struct ctdb_call_state *state, struct ctdb_call *call);
783
784 /*
785 queue a packet for sending
786 */
787 int ctdb_queue_send(struct ctdb_queue *queue, uint8_t *data, uint32_t length);
788
789 /*
790 setup the fd used by the queue
791 */
792 int ctdb_queue_set_fd(struct ctdb_queue *queue, int fd);
793
794 /*
795 setup a packet queue on a socket
796 */
797 struct ctdb_queue *ctdb_queue_setup(struct ctdb_context *ctdb,
798 TALLOC_CTX *mem_ctx, int fd, int alignment,
799
800 ctdb_queue_cb_fn_t callback,
801 void *private_data, const char *fmt, ...)
802 PRINTF_ATTRIBUTE(7,8);
803
804 /*
805 allocate a packet for use in client<->daemon communication
806 */
807 struct ctdb_req_header *_ctdbd_allocate_pkt(struct ctdb_context *ctdb,
808 TALLOC_CTX *mem_ctx,
809 enum ctdb_operation operation,
810 size_t length, size_t slength,
811 const char *type);
812 #define ctdbd_allocate_pkt(ctdb, mem_ctx, operation, length, type) \
813 (type *)_ctdbd_allocate_pkt(ctdb, mem_ctx, operation, length, sizeof(type), #type)
814
815 struct ctdb_req_header *_ctdb_transport_allocate(struct ctdb_context *ctdb,
816 TALLOC_CTX *mem_ctx,
817 enum ctdb_operation operation,
818 size_t length, size_t slength,
819 const char *type);
820 #define ctdb_transport_allocate(ctdb, mem_ctx, operation, length, type) \
821 (type *)_ctdb_transport_allocate(ctdb, mem_ctx, operation, length, sizeof(type), #type)
822
823 int ctdb_queue_length(struct ctdb_queue *queue);
824
825 /*
826 lock a record in the ltdb, given a key
827 */
828 int ctdb_ltdb_lock(struct ctdb_db_context *ctdb_db, TDB_DATA key);
829
830 /*
831 unlock a record in the ltdb, given a key
832 */
833 int ctdb_ltdb_unlock(struct ctdb_db_context *ctdb_db, TDB_DATA key);
834
835
836 /*
837 make a ctdb call to the local daemon - async send. Called from client context.
838
839 This constructs a ctdb_call request and queues it for processing.
840 This call never blocks.
841 */
842 struct ctdb_call_state *ctdb_client_call_send(struct ctdb_db_context *ctdb_db,
843 struct ctdb_call *call);
844
845 /*
846 make a recv call to the local ctdb daemon - called from client context
847
848 This is called when the program wants to wait for a ctdb_call to complete and get the
849 results. This call will block unless the call has already completed.
850 */
851 int ctdb_client_call_recv(struct ctdb_call_state *state, struct ctdb_call *call);
852
853 int ctdb_client_send_message(struct ctdb_context *ctdb, uint32_t vnn,
854 uint64_t srvid, TDB_DATA data);
855
856 /*
857 send a ctdb message
858 */
859 int ctdb_daemon_send_message(struct ctdb_context *ctdb, uint32_t pnn,
860 uint64_t srvid, TDB_DATA data);
861
862
863 struct ctdb_call_state *ctdb_daemon_call_send(struct ctdb_db_context *ctdb_db,
864 struct ctdb_call *call);
865
866 int ctdb_daemon_call_recv(struct ctdb_call_state *state, struct ctdb_call *call);
867
868 struct ctdb_call_state *ctdb_daemon_call_send_remote(struct ctdb_db_context *ctdb_db,
869 struct ctdb_call *call,
870 struct ctdb_ltdb_header *header);
871
872 int ctdb_call_local(struct ctdb_db_context *ctdb_db, struct ctdb_call *call,
873 struct ctdb_ltdb_header *header, TALLOC_CTX *mem_ctx,
874 TDB_DATA *data, bool updatetdb);
875
876 #define ctdb_reqid_find(ctdb, reqid, type) (type *)_ctdb_reqid_find(ctdb, reqid, #type, __location__)
877
878 void ctdb_recv_raw_pkt(void *p, uint8_t *data, uint32_t length);
879
880 int ctdb_socket_connect(struct ctdb_context *ctdb);
881 void ctdb_client_read_cb(uint8_t *data, size_t cnt, void *args);
882
883 #define CTDB_BAD_REQID ((uint32_t)-1)
884 uint32_t ctdb_reqid_new(struct ctdb_context *ctdb, void *state);
885 void *_ctdb_reqid_find(struct ctdb_context *ctdb, uint32_t reqid, const char *type, const char *location);
886 void ctdb_reqid_remove(struct ctdb_context *ctdb, uint32_t reqid);
887
888 void ctdb_request_control(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
889 void ctdb_reply_control(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
890
891 int ctdb_daemon_send_control(struct ctdb_context *ctdb, uint32_t destnode,
892 uint64_t srvid, uint32_t opcode, uint32_t client_id, uint32_t flags,
893 TDB_DATA data,
894 ctdb_control_callback_fn_t callback,
895 void *private_data);
896
897 int32_t ctdb_control_db_attach(struct ctdb_context *ctdb, TDB_DATA indata,
898 TDB_DATA *outdata, uint64_t tdb_flags,
899 bool persistent, uint32_t client_id,
900 struct ctdb_req_control *c,
901 bool *async_reply);
902 int32_t ctdb_control_db_detach(struct ctdb_context *ctdb, TDB_DATA indata,
903 uint32_t client_id);
904
905 int ctdb_daemon_set_call(struct ctdb_context *ctdb, uint32_t db_id,
906 ctdb_fn_t fn, int id);
907
908 int ctdb_control(struct ctdb_context *ctdb, uint32_t destnode, uint64_t srvid,
909 uint32_t opcode, uint32_t flags, TDB_DATA data,
910 TALLOC_CTX *mem_ctx, TDB_DATA *outdata, int32_t *status,
911 struct timeval *timeout, char **errormsg);
912 int ctdb_control_recv(struct ctdb_context *ctdb,
913 struct ctdb_client_control_state *state,
914 TALLOC_CTX *mem_ctx,
915 TDB_DATA *outdata, int32_t *status, char **errormsg);
916
917 struct ctdb_client_control_state *
918 ctdb_control_send(struct ctdb_context *ctdb,
919 uint32_t destnode, uint64_t srvid,
920 uint32_t opcode, uint32_t flags, TDB_DATA data,
921 TALLOC_CTX *mem_ctx,
922 struct timeval *timeout,
923 char **errormsg);
924
925
926
927
928 #define CHECK_CONTROL_DATA_SIZE(size) do { \
929 if (indata.dsize != size) { \
930 DEBUG(0,(__location__ " Invalid data size in opcode %u. Got %u expected %u\n", \
931 opcode, (unsigned)indata.dsize, (unsigned)size)); \
932 return -1; \
933 } \
934 } while (0)
935
936 #define CHECK_CONTROL_MIN_DATA_SIZE(size) do { \
937 if (indata.dsize < size) { \
938 DEBUG(0,(__location__ " Invalid data size in opcode %u. Got %u expected >= %u\n", \
939 opcode, (unsigned)indata.dsize, (unsigned)size)); \
940 return -1; \
941 } \
942 } while (0)
943
944 int ctdb_control_getvnnmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
945 int ctdb_control_setvnnmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
946 int ctdb_control_getdbmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
947 int ctdb_control_getnodemapv4(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
948 int ctdb_control_getnodemap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
949 int ctdb_control_writerecord(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
950
951
952 /* structure used for pulldb control */
953 struct ctdb_control_pulldb {
954 uint32_t db_id;
955 uint32_t lmaster;
956 };
957
958 /* structure used for sending lists of records */
959 struct ctdb_marshall_buffer {
960 uint32_t db_id;
961 uint32_t count;
962 uint8_t data[1];
963 };
964
965 /*
966 structure for setting a tunable
967 */
968 struct ctdb_control_set_tunable {
969 uint32_t value;
970 uint32_t length;
971 uint8_t name[1];
972 };
973
974 /*
975 structure for getting a tunable
976 */
977 struct ctdb_control_get_tunable {
978 uint32_t length;
979 uint8_t name[1];
980 };
981
982 /*
983 structure for listing tunables
984 */
985 struct ctdb_control_list_tunable {
986 uint32_t length;
987 /* returns a : separated list of tunable names */
988 uint8_t data[1];
989 };
990
991
992 struct ctdb_node_and_flagsv4 {
993 uint32_t pnn;
994 uint32_t flags;
995 struct sockaddr_in sin;
996 };
997
998 struct ctdb_node_mapv4 {
999 uint32_t num;
1000 struct ctdb_node_and_flagsv4 nodes[1];
1001 };
1002
1003 struct ctdb_control_wipe_database {
1004 uint32_t db_id;
1005 uint32_t transaction_id;
1006 };
1007
1008 /*
1009 state of a in-progress ctdb call in client
1010 */
1011 struct ctdb_client_call_state {
1012 enum call_state state;
1013 uint32_t reqid;
1014 struct ctdb_db_context *ctdb_db;
1015 struct ctdb_call *call;
1016 struct {
1017 void (*fn)(struct ctdb_client_call_state *);
1018 void *private_data;
1019 } async;
1020 };
1021
1022
1023 int32_t ctdb_control_traverse_start_ext(struct ctdb_context *ctdb,
1024 TDB_DATA indata,
1025 TDB_DATA *outdata,
1026 uint32_t srcnode,
1027 uint32_t client_id);
1028 int32_t ctdb_control_traverse_start(struct ctdb_context *ctdb, TDB_DATA indata,
1029 TDB_DATA *outdata, uint32_t srcnode, uint32_t client_id);
1030 int32_t ctdb_control_traverse_all(struct ctdb_context *ctdb, TDB_DATA data, TDB_DATA *outdata);
1031 int32_t ctdb_control_traverse_all_ext(struct ctdb_context *ctdb, TDB_DATA data, TDB_DATA *outdata);
1032 int32_t ctdb_control_traverse_data(struct ctdb_context *ctdb, TDB_DATA data, TDB_DATA *outdata);
1033 int32_t ctdb_control_traverse_kill(struct ctdb_context *ctdb, TDB_DATA indata,
1034 TDB_DATA *outdata, uint32_t srcnode);
1035
1036 int ctdb_dispatch_message(struct ctdb_context *ctdb, uint64_t srvid, TDB_DATA data);
1037 bool ctdb_check_message_handler(struct ctdb_context *ctdb, uint64_t srvid);
1038
1039 int daemon_register_message_handler(struct ctdb_context *ctdb, uint32_t client_id, uint64_t srvid);
1040 int ctdb_deregister_message_handler(struct ctdb_context *ctdb, uint64_t srvid, void *private_data);
1041 int daemon_deregister_message_handler(struct ctdb_context *ctdb, uint32_t client_id, uint64_t srvid);
1042 int daemon_check_srvids(struct ctdb_context *ctdb, TDB_DATA indata,
1043 TDB_DATA *outdata);
1044
1045 int32_t ctdb_ltdb_enable_seqnum(struct ctdb_context *ctdb, uint32_t db_id);
1046 int32_t ctdb_ltdb_update_seqnum(struct ctdb_context *ctdb, uint32_t db_id, uint32_t srcnode);
1047
1048 struct ctdb_rec_data *ctdb_marshall_record(TALLOC_CTX *mem_ctx, uint32_t reqid,
1049 TDB_DATA key, struct ctdb_ltdb_header *, TDB_DATA data);
1050
1051 struct ctdb_rec_data *ctdb_marshall_loop_next(struct ctdb_marshall_buffer *m, struct ctdb_rec_data *r,
1052 uint32_t *reqid,
1053 struct ctdb_ltdb_header *header,
1054 TDB_DATA *key, TDB_DATA *data);
1055
1056 int32_t ctdb_control_pull_db(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
1057 int32_t ctdb_control_push_db(struct ctdb_context *ctdb, TDB_DATA indata);
1058
1059 int32_t ctdb_control_set_recmode(struct ctdb_context *ctdb,
1060 struct ctdb_req_control *c,
1061 TDB_DATA indata, bool *async_reply,
1062 const char **errormsg);
1063 void ctdb_request_control_reply(struct ctdb_context *ctdb, struct ctdb_req_control *c,
1064 TDB_DATA *outdata, int32_t status, const char *errormsg);
1065
1066 int32_t ctdb_control_freeze(struct ctdb_context *ctdb, struct ctdb_req_control *c, bool *async_reply);
1067 int32_t ctdb_control_thaw(struct ctdb_context *ctdb, uint32_t priority);
1068
1069 int ctdb_start_recoverd(struct ctdb_context *ctdb);
1070 void ctdb_stop_recoverd(struct ctdb_context *ctdb);
1071
1072 uint32_t ctdb_get_num_active_nodes(struct ctdb_context *ctdb);
1073
1074 void ctdb_disable_monitoring(struct ctdb_context *ctdb);
1075 void ctdb_enable_monitoring(struct ctdb_context *ctdb);
1076 void ctdb_stop_monitoring(struct ctdb_context *ctdb);
1077 void ctdb_wait_for_first_recovery(struct ctdb_context *ctdb);
1078 void ctdb_start_tcp_tickle_update(struct ctdb_context *ctdb);
1079 void ctdb_send_keepalive(struct ctdb_context *ctdb, uint32_t destnode);
1080 void ctdb_start_keepalive(struct ctdb_context *ctdb);
1081 void ctdb_stop_keepalive(struct ctdb_context *ctdb);
1082 int32_t ctdb_run_eventscripts(struct ctdb_context *ctdb, struct ctdb_req_control *c, TDB_DATA data, bool *async_reply);
1083
1084
1085 void ctdb_daemon_cancel_controls(struct ctdb_context *ctdb, struct ctdb_node *node);
1086 void ctdb_call_resend_all(struct ctdb_context *ctdb);
1087 void ctdb_node_dead(struct ctdb_node *node);
1088 void ctdb_node_connected(struct ctdb_node *node);
1089 bool ctdb_blocking_freeze(struct ctdb_context *ctdb);
1090 void set_scheduler(void);
1091 void reset_scheduler(void);
1092
1093 struct tevent_signal *ctdb_init_sigchld(struct ctdb_context *ctdb);
1094 void ctdb_track_child(struct ctdb_context *ctdb, pid_t pid);
1095 pid_t ctdb_fork(struct ctdb_context *ctdb);
1096 pid_t ctdb_fork_no_free_ringbuffer(struct ctdb_context *ctdb);
1097 void ctdb_set_child_info(TALLOC_CTX *mem_ctx, const char *child_name_fmt, ...);
1098 bool ctdb_is_child_process(void);
1099 int ctdb_kill(struct ctdb_context *ctdb, pid_t pid, int signum);
1100
1101 int32_t ctdb_control_takeover_ip(struct ctdb_context *ctdb,
1102 struct ctdb_req_control *c,
1103 TDB_DATA indata,
1104 bool *async_reply);
1105 int32_t ctdb_control_takeover_ipv4(struct ctdb_context *ctdb,
1106 struct ctdb_req_control *c,
1107 TDB_DATA indata,
1108 bool *async_reply);
1109 int32_t ctdb_control_release_ip(struct ctdb_context *ctdb,
1110 struct ctdb_req_control *c,
1111 TDB_DATA indata,
1112 bool *async_reply);
1113 int32_t ctdb_control_release_ipv4(struct ctdb_context *ctdb,
1114 struct ctdb_req_control *c,
1115 TDB_DATA indata,
1116 bool *async_reply);
1117 int32_t ctdb_control_ipreallocated(struct ctdb_context *ctdb,
1118 struct ctdb_req_control *c,
1119 bool *async_reply);
1120 int32_t ctdb_control_start_recovery(struct ctdb_context *ctdb,
1121 struct ctdb_req_control *c,
1122 bool *async_reply);
1123 int32_t ctdb_control_end_recovery(struct ctdb_context *ctdb,
1124 struct ctdb_req_control *c,
1125 bool *async_reply);
1126
1127 struct ctdb_public_ipv4 {
1128 uint32_t pnn;
1129 struct sockaddr_in sin;
1130 };
1131
1132 int ctdb_ctrl_takeover_ip(struct ctdb_context *ctdb, struct timeval timeout,
1133 uint32_t destnode, struct ctdb_public_ip *ip);
1134 int ctdb_ctrl_release_ip(struct ctdb_context *ctdb, struct timeval timeout,
1135 uint32_t destnode, struct ctdb_public_ip *ip);
1136
1137 struct ctdb_all_public_ipsv4 {
1138 uint32_t num;
1139 struct ctdb_public_ipv4 ips[1];
1140 };
1141
1142 int32_t ctdb_control_get_public_ipsv4(struct ctdb_context *ctdb, struct ctdb_req_control *c, TDB_DATA *outdata);
1143 int32_t ctdb_control_get_public_ips(struct ctdb_context *ctdb, struct ctdb_req_control *c, TDB_DATA *outdata);
1144 int ctdb_ctrl_get_public_ips(struct ctdb_context *ctdb,
1145 struct timeval timeout,
1146 uint32_t destnode,
1147 TALLOC_CTX *mem_ctx,
1148 struct ctdb_all_public_ips **ips);
1149 #define CTDB_PUBLIC_IP_FLAGS_ONLY_AVAILABLE 0x00010000
1150 int ctdb_ctrl_get_public_ips_flags(struct ctdb_context *ctdb,
1151 struct timeval timeout, uint32_t destnode,
1152 TALLOC_CTX *mem_ctx,
1153 uint32_t flags,
1154 struct ctdb_all_public_ips **ips);
1155 int ctdb_ctrl_get_public_ipsv4(struct ctdb_context *ctdb,
1156 struct timeval timeout, uint32_t destnode,
1157 TALLOC_CTX *mem_ctx, struct ctdb_all_public_ips **ips);
1158
1159 struct ctdb_control_iface_info {
1160 char name[CTDB_IFACE_SIZE+2];
1161 uint16_t link_state;
1162 uint32_t references;
1163 };
1164
1165 struct ctdb_control_public_ip_info {
1166 struct ctdb_public_ip ip;
1167 uint32_t active_idx;
1168 uint32_t num;
1169 struct ctdb_control_iface_info ifaces[1];
1170 };
1171
1172 struct ctdb_control_get_ifaces {
1173 uint32_t num;
1174 struct ctdb_control_iface_info ifaces[1];
1175 };
1176
1177 int32_t ctdb_control_get_public_ip_info(struct ctdb_context *ctdb,
1178 struct ctdb_req_control *c,
1179 TDB_DATA indata,
1180 TDB_DATA *outdata);
1181 int32_t ctdb_control_get_ifaces(struct ctdb_context *ctdb,
1182 struct ctdb_req_control *c,
1183 TDB_DATA *outdata);
1184 int32_t ctdb_control_set_iface_link(struct ctdb_context *ctdb,
1185 struct ctdb_req_control *c,
1186 TDB_DATA indata);
1187 int ctdb_ctrl_get_public_ip_info(struct ctdb_context *ctdb,
1188 struct timeval timeout, uint32_t destnode,
1189 TALLOC_CTX *mem_ctx,
1190 const ctdb_sock_addr *addr,
1191 struct ctdb_control_public_ip_info **info);
1192 int ctdb_ctrl_get_ifaces(struct ctdb_context *ctdb,
1193 struct timeval timeout, uint32_t destnode,
1194 TALLOC_CTX *mem_ctx,
1195 struct ctdb_control_get_ifaces **ifaces);
1196 int ctdb_ctrl_set_iface_link(struct ctdb_context *ctdb,
1197 struct timeval timeout, uint32_t destnode,
1198 TALLOC_CTX *mem_ctx,
1199 const struct ctdb_control_iface_info *info);
1200
1201 /* from takeover/system.c */
1202 uint32_t uint16_checksum(uint16_t *data, size_t n);
1203 int ctdb_sys_send_arp(const ctdb_sock_addr *addr, const char *iface);
1204 bool ctdb_sys_have_ip(ctdb_sock_addr *addr);
1205 char *ctdb_sys_find_ifname(ctdb_sock_addr *addr);
1206 bool ctdb_sys_check_iface_exists(const char *iface);
1207 int ctdb_get_peer_pid(const int fd, pid_t *peer_pid);
1208 int ctdb_sys_send_tcp(const ctdb_sock_addr *dest,
1209 const ctdb_sock_addr *src,
1210 uint32_t seq, uint32_t ack, int rst);
1211
1212 /* Details of a byte range lock */
1213 struct ctdb_lock_info {
1214 ino_t inode;
1215 off_t start, end;
1216 bool waiting;
1217 bool read_only;
1218 };
1219
1220 char *ctdb_get_process_name(pid_t pid);
1221 int ctdb_set_process_name(const char *name);
1222 bool ctdb_get_lock_info(pid_t req_pid, struct ctdb_lock_info *lock_info);
1223 bool ctdb_get_blocker_pid(struct ctdb_lock_info *reqlock, pid_t *blocker_pid);
1224
1225 typedef void (*client_async_callback)(struct ctdb_context *ctdb, uint32_t node_pnn, int32_t res, TDB_DATA outdata, void *callback_data);
1226
1227 int ctdb_set_public_addresses(struct ctdb_context *ctdb, bool check_addresses);
1228 int ctdb_set_single_public_ip(struct ctdb_context *ctdb,
1229 const char *iface,
1230 const char *ip);
1231 int ctdb_set_event_script(struct ctdb_context *ctdb, const char *script);
1232 int ctdb_set_notification_script(struct ctdb_context *ctdb, const char *script);
1233 int ctdb_takeover_run(struct ctdb_context *ctdb, struct ctdb_node_map *nodemap,
1234 uint32_t *force_rebalance_nodes,
1235 client_async_callback fail_callback, void *callback_data);
1236
1237 int32_t ctdb_control_tcp_client(struct ctdb_context *ctdb, uint32_t client_id,
1238 TDB_DATA indata);
1239 int32_t ctdb_control_tcp_add(struct ctdb_context *ctdb, TDB_DATA indata, bool tcp_update_needed);
1240 int32_t ctdb_control_tcp_remove(struct ctdb_context *ctdb, TDB_DATA indata);
1241 int32_t ctdb_control_startup(struct ctdb_context *ctdb, uint32_t vnn);
1242 int32_t ctdb_control_kill_tcp(struct ctdb_context *ctdb, TDB_DATA indata);
1243 int32_t ctdb_control_send_gratious_arp(struct ctdb_context *ctdb, TDB_DATA indata);
1244 int32_t ctdb_control_get_tcp_tickle_list(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
1245 int32_t ctdb_control_set_tcp_tickle_list(struct ctdb_context *ctdb, TDB_DATA indata);
1246
1247 void ctdb_takeover_client_destructor_hook(struct ctdb_client *client);
1248 int ctdb_event_script(struct ctdb_context *ctdb, enum ctdb_eventscript_call call);
1249 int ctdb_event_script_args(struct ctdb_context *ctdb, enum ctdb_eventscript_call call,
1250 const char *fmt, ...) PRINTF_ATTRIBUTE(3,4);
1251 int ctdb_event_script_callback(struct ctdb_context *ctdb,
1252 TALLOC_CTX *mem_ctx,
1253 void (*callback)(struct ctdb_context *, int, void *),
1254 void *private_data,
1255 enum ctdb_eventscript_call call,
1256 const char *fmt, ...) PRINTF_ATTRIBUTE(6,7);
1257 void ctdb_release_all_ips(struct ctdb_context *ctdb);
1258
1259 void set_nonblocking(int fd);
1260 void set_close_on_exec(int fd);
1261
1262 bool ctdb_recovery_lock(struct ctdb_context *ctdb, bool keep);
1263
1264 int ctdb_set_recovery_lock_file(struct ctdb_context *ctdb, const char *file);
1265
1266 int32_t ctdb_control_get_tunable(struct ctdb_context *ctdb, TDB_DATA indata,
1267 TDB_DATA *outdata);
1268 int32_t ctdb_control_set_tunable(struct ctdb_context *ctdb, TDB_DATA indata);
1269 int32_t ctdb_control_list_tunables(struct ctdb_context *ctdb, TDB_DATA *outdata);
1270 int32_t ctdb_control_try_delete_records(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
1271 int32_t ctdb_control_receive_records(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
1272 int32_t ctdb_control_add_public_address(struct ctdb_context *ctdb, TDB_DATA indata);
1273 int32_t ctdb_control_del_public_address(struct ctdb_context *ctdb,
1274 struct ctdb_req_control *c,
1275 TDB_DATA recdata, bool *async_reply);
1276
1277 void ctdb_tunables_set_defaults(struct ctdb_context *ctdb);
1278
1279 int32_t ctdb_control_modflags(struct ctdb_context *ctdb, TDB_DATA indata);
1280
1281 int ctdb_ctrl_get_all_tunables(struct ctdb_context *ctdb,
1282 struct timeval timeout,
1283 uint32_t destnode,
1284 struct ctdb_tunable *tunables);
1285
1286 void ctdb_start_freeze(struct ctdb_context *ctdb, uint32_t priority);
1287
1288 bool parse_ip_mask(const char *s, const char *iface, ctdb_sock_addr *addr, unsigned *mask);
1289 bool parse_ip_port(const char *s, ctdb_sock_addr *addr);
1290 bool parse_ip(const char *s, const char *iface, unsigned port, ctdb_sock_addr *addr);
1291 bool parse_ipv4(const char *s, unsigned port, struct sockaddr_in *sin);
1292
1293
1294 int ctdb_sys_open_capture_socket(const char *iface, void **private_data);
1295 int ctdb_sys_close_capture_socket(void *private_data);
1296 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);
1297
1298 int ctdb_ctrl_killtcp(struct ctdb_context *ctdb,
1299 struct timeval timeout,
1300 uint32_t destnode,
1301 struct ctdb_control_killtcp *killtcp);
1302
1303 int ctdb_ctrl_add_public_ip(struct ctdb_context *ctdb,
1304 struct timeval timeout,
1305 uint32_t destnode,
1306 struct ctdb_control_ip_iface *pub);
1307
1308 int ctdb_ctrl_del_public_ip(struct ctdb_context *ctdb,
1309 struct timeval timeout,
1310 uint32_t destnode,
1311 struct ctdb_control_ip_iface *pub);
1312
1313 int ctdb_ctrl_gratious_arp(struct ctdb_context *ctdb,
1314 struct timeval timeout,
1315 uint32_t destnode,
1316 ctdb_sock_addr *addr,
1317 const char *ifname);
1318
1319 int ctdb_ctrl_get_tcp_tickles(struct ctdb_context *ctdb,
1320 struct timeval timeout,
1321 uint32_t destnode,
1322 TALLOC_CTX *mem_ctx,
1323 ctdb_sock_addr *addr,
1324 struct ctdb_control_tcp_tickle_list **list);
1325
1326
1327 int32_t ctdb_control_register_server_id(struct ctdb_context *ctdb,
1328 uint32_t client_id,
1329 TDB_DATA indata);
1330 int32_t ctdb_control_check_server_id(struct ctdb_context *ctdb,
1331 TDB_DATA indata);
1332 int32_t ctdb_control_unregister_server_id(struct ctdb_context *ctdb,
1333 TDB_DATA indata);
1334 int32_t ctdb_control_get_server_id_list(struct ctdb_context *ctdb,
1335 TDB_DATA *outdata);
1336 int32_t ctdb_control_uptime(struct ctdb_context *ctdb,
1337 TDB_DATA *outdata);
1338
1339 int ctdb_attach_databases(struct ctdb_context *ctdb);
1340
1341 int32_t ctdb_control_persistent_store(struct ctdb_context *ctdb,
1342 struct ctdb_req_control *c,
1343 TDB_DATA recdata, bool *async_reply);
1344 int32_t ctdb_control_update_record(struct ctdb_context *ctdb,
1345 struct ctdb_req_control *c, TDB_DATA recdata,
1346 bool *async_reply);
1347 int32_t ctdb_control_trans2_commit(struct ctdb_context *ctdb,
1348 struct ctdb_req_control *c,
1349 TDB_DATA recdata, bool *async_reply);
1350
1351 int32_t ctdb_control_trans3_commit(struct ctdb_context *ctdb,
1352 struct ctdb_req_control *c,
1353 TDB_DATA recdata, bool *async_reply);
1354
1355 void ctdb_persistent_finish_trans3_commits(struct ctdb_context *ctdb);
1356
1357 int32_t ctdb_control_transaction_start(struct ctdb_context *ctdb, uint32_t id);
1358 int32_t ctdb_control_transaction_commit(struct ctdb_context *ctdb, uint32_t id);
1359 int32_t ctdb_control_transaction_cancel(struct ctdb_context *ctdb);
1360 int32_t ctdb_control_wipe_database(struct ctdb_context *ctdb, TDB_DATA indata);
1361 int32_t ctdb_control_db_set_healthy(struct ctdb_context *ctdb, TDB_DATA indata);
1362 int32_t ctdb_control_db_get_health(struct ctdb_context *ctdb,
1363 TDB_DATA indata,
1364 TDB_DATA *outdata);
1365
1366
1367 int ctdb_vacuum(struct ctdb_context *ctdb, int argc, const char **argv);
1368 int ctdb_repack(struct ctdb_context *ctdb, int argc, const char **argv);
1369
1370 int32_t ctdb_monitoring_mode(struct ctdb_context *ctdb);
1371 bool ctdb_stopped_monitoring(struct ctdb_context *ctdb);
1372 int ctdb_set_child_logging(struct ctdb_context *ctdb);
1373 void lockdown_memory(bool valgrinding);
1374
1375 struct client_async_data {
1376 enum ctdb_controls opcode;
1377 bool dont_log_errors;
1378 uint32_t count;
1379 uint32_t fail_count;
1380 client_async_callback callback;
1381 client_async_callback fail_callback;
1382 void *callback_data;
1383 };
1384 void ctdb_client_async_add(struct client_async_data *data, struct ctdb_client_control_state *state);
1385 int ctdb_client_async_wait(struct ctdb_context *ctdb, struct client_async_data *data);
1386 int ctdb_client_async_control(struct ctdb_context *ctdb,
1387 enum ctdb_controls opcode,
1388 uint32_t *nodes,
1389 uint64_t srvid,
1390 struct timeval timeout,
1391 bool dont_log_errors,
1392 TDB_DATA data,
1393 client_async_callback client_callback,
1394 client_async_callback fail_callback,
1395 void *callback_data);
1396
1397 void ctdb_load_nodes_file(struct ctdb_context *ctdb);
1398
1399 int ctdb_control_reload_nodes_file(struct ctdb_context *ctdb, uint32_t opcode);
1400
1401 int32_t ctdb_dump_memory(struct ctdb_context *ctdb, TDB_DATA *outdata);
1402 int32_t ctdb_control_get_capabilities(struct ctdb_context *ctdb, TDB_DATA *outdata);
1403
1404 int32_t ctdb_control_trans2_finished(struct ctdb_context *ctdb,
1405 struct ctdb_req_control *c);
1406 int32_t ctdb_control_trans2_error(struct ctdb_context *ctdb,
1407 struct ctdb_req_control *c);
1408 int32_t ctdb_control_trans2_active(struct ctdb_context *ctdb,
1409 struct ctdb_req_control *c,
1410 uint32_t db_id);
1411
1412 char *ctdb_addr_to_str(ctdb_sock_addr *addr);
1413 unsigned ctdb_addr_to_port(ctdb_sock_addr *addr);
1414 void ctdb_canonicalize_ip(const ctdb_sock_addr *ip, ctdb_sock_addr *cip);
1415
1416 int32_t ctdb_control_recd_ping(struct ctdb_context *ctdb);
1417 int32_t ctdb_control_set_recmaster(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata);
1418
1419 extern int script_log_level;
1420 extern bool fast_start;
1421 extern const char *ctdbd_pidfile;
1422
1423 int32_t ctdb_control_get_event_script_status(struct ctdb_context *ctdb,
1424 uint32_t call_type,
1425 TDB_DATA *outdata);
1426
1427 int ctdb_log_event_script_output(struct ctdb_context *ctdb, char *str, uint16_t len);
1428 int ctdb_ctrl_report_recd_lock_latency(struct ctdb_context *ctdb, struct timeval timeout, double latency);
1429
1430 int32_t ctdb_control_stop_node(struct ctdb_context *ctdb);
1431 int32_t ctdb_control_continue_node(struct ctdb_context *ctdb);
1432
1433 void ctdb_stop_vacuuming(struct ctdb_context *ctdb);
1434 int ctdb_vacuum_init(struct ctdb_db_context *ctdb_db);
1435
1436 int32_t ctdb_control_enable_script(struct ctdb_context *ctdb, TDB_DATA indata);
1437 int32_t ctdb_control_disable_script(struct ctdb_context *ctdb, TDB_DATA indata);
1438
1439 void ctdb_local_node_got_banned(struct ctdb_context *ctdb);
1440 int32_t ctdb_control_set_ban_state(struct ctdb_context *ctdb, TDB_DATA indata);
1441 int32_t ctdb_control_get_ban_state(struct ctdb_context *ctdb, TDB_DATA *outdata);
1442 int32_t ctdb_control_set_db_priority(struct ctdb_context *ctdb, TDB_DATA indata,
1443 uint32_t client_id);
1444 void ctdb_ban_self(struct ctdb_context *ctdb);
1445
1446 int32_t ctdb_control_register_notify(struct ctdb_context *ctdb, uint32_t client_id, TDB_DATA indata);
1447
1448 int32_t ctdb_control_deregister_notify(struct ctdb_context *ctdb, uint32_t client_id, TDB_DATA indata);
1449
1450 int start_syslog_daemon(struct ctdb_context *ctdb);
1451
1452 /* Where to send the log messages back to */
1453 struct ctdb_get_log_addr {
1454 uint32_t pnn;
1455 uint64_t srvid;
1456 int32_t level;
1457 };
1458
1459 extern int log_ringbuf_size;
1460
1461 TDB_DATA ctdb_log_ringbuffer_collect_log(TALLOC_CTX *mem_ctx,
1462 enum debug_level max_level);
1463 void ctdb_collect_log(struct ctdb_context *ctdb, struct ctdb_get_log_addr *log_addr);
1464 void ctdb_clear_log(struct ctdb_context *ctdb);
1465 int32_t ctdb_control_get_log(struct ctdb_context *ctdb, TDB_DATA addr);
1466 int32_t ctdb_control_clear_log(struct ctdb_context *ctdb);
1467 void ctdb_log_ringbuffer_free(void);
1468
1469 struct ctdb_log_state *ctdb_vfork_with_logging(TALLOC_CTX *mem_ctx,
1470 struct ctdb_context *ctdb,
1471 const char *log_prefix,
1472 const char *helper,
1473 int helper_argc,
1474 const char **helper_argv,
1475 void (*logfn)(const char *, uint16_t, void *),
1476 void *logfn_private, pid_t *pid);
1477
1478
1479 int32_t ctdb_control_process_exists(struct ctdb_context *ctdb, pid_t pid);
1480 struct ctdb_client *ctdb_find_client_by_pid(struct ctdb_context *ctdb, pid_t pid);
1481
1482 int32_t ctdb_control_get_db_seqnum(struct ctdb_context *ctdb,
1483 TDB_DATA indata,
1484 TDB_DATA *outdata);
1485
1486 int ctdb_load_persistent_health(struct ctdb_context *ctdb,
1487 struct ctdb_db_context *ctdb_db);
1488 int ctdb_update_persistent_health(struct ctdb_context *ctdb,
1489 struct ctdb_db_context *ctdb_db,
1490 const char *reason,/* NULL means healthy */
1491 int num_healthy_nodes);
1492 int ctdb_recheck_persistent_health(struct ctdb_context *ctdb);
1493
1494 void ctdb_run_notification_script(struct ctdb_context *ctdb, const char *event);
1495
1496 void ctdb_fault_setup(void);
1497
1498 int verify_remote_ip_allocation(struct ctdb_context *ctdb,
1499 struct ctdb_all_public_ips *ips,
1500 uint32_t pnn);
1501 int update_ip_assignment_tree(struct ctdb_context *ctdb,
1502 struct ctdb_public_ip *ip);
1503
1504 int ctdb_init_tevent_logging(struct ctdb_context *ctdb);
1505
1506 int ctdb_statistics_init(struct ctdb_context *ctdb);
1507
1508 int32_t ctdb_control_get_stat_history(struct ctdb_context *ctdb,
1509 struct ctdb_req_control *c,
1510 TDB_DATA *outdata);
1511
1512 int ctdb_deferred_drop_all_ips(struct ctdb_context *ctdb);
1513
1514 int ctdb_process_deferred_attach(struct ctdb_context *ctdb);
1515
1516 /**
1517 * structure to pass to a schedule_for_deletion_control
1518 */
1519 struct ctdb_control_schedule_for_deletion {
1520 uint32_t db_id;
1521 struct ctdb_ltdb_header hdr;
1522 uint32_t keylen;
1523 uint8_t key[1]; /* key[] */
1524 };
1525
1526 int32_t ctdb_control_schedule_for_deletion(struct ctdb_context *ctdb,
1527 TDB_DATA indata);
1528
1529
1530 int32_t ctdb_local_schedule_for_deletion(struct ctdb_db_context *ctdb_db,
1531 const struct ctdb_ltdb_header *hdr,
1532 TDB_DATA key);
1533
1534 void ctdb_local_remove_from_delete_queue(struct ctdb_db_context *ctdb_db,
1535 const struct ctdb_ltdb_header *hdr,
1536 const TDB_DATA key);
1537
1538 struct ctdb_ltdb_header *ctdb_header_from_record_handle(struct ctdb_record_handle *h);
1539
1540 int ctdb_trackingdb_add_pnn(struct ctdb_context *ctdb, TDB_DATA *data, uint32_t pnn);
1541
1542 typedef void (*ctdb_trackingdb_cb)(struct ctdb_context *ctdb, uint32_t pnn, void *private_data);
1543
1544 void ctdb_trackingdb_traverse(struct ctdb_context *ctdb, TDB_DATA data, ctdb_trackingdb_cb cb, void *private_data);
1545
1546 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);
1547
1548 typedef void (*deferred_requeue_fn)(void *call_context, struct ctdb_req_header *hdr);
1549
1550 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);
1551
1552 int ctdb_set_db_readonly(struct ctdb_context *ctdb, struct ctdb_db_context *ctdb_db);
1553
1554 int ctdb_null_func(struct ctdb_call_info *call);
1555
1556 int ctdb_fetch_func(struct ctdb_call_info *call);
1557
1558 int ctdb_fetch_with_header_func(struct ctdb_call_info *call);
1559
1560 int32_t ctdb_control_get_db_statistics(struct ctdb_context *ctdb,
1561 uint32_t db_id,
1562 TDB_DATA *outdata);
1563
1564 int ctdb_set_db_sticky(struct ctdb_context *ctdb, struct ctdb_db_context *ctdb_db);
1565
1566 /*
1567 description for a message to reload all ips via recovery master/daemon
1568 */
1569 struct reloadips_all_reply {
1570 uint32_t pnn;
1571 uint64_t srvid;
1572 };
1573
1574 int32_t ctdb_control_reload_public_ips(struct ctdb_context *ctdb, struct ctdb_req_control *c, bool *async_reply);
1575
1576 int ctdb_start_monitoring_interfaces(struct ctdb_context *ctdb);
1577
1578 /* from server/ctdb_lock.c */
1579 struct lock_request;
1580
1581 int ctdb_lockall_mark_prio(struct ctdb_context *ctdb, uint32_t priority);
1582 int ctdb_lockall_unmark_prio(struct ctdb_context *ctdb, uint32_t priority);
1583
1584 void ctdb_lock_free_request_context(struct lock_request *lock_req);
1585
1586 struct lock_request *ctdb_lock_record(struct ctdb_db_context *ctdb_db,
1587 TDB_DATA key,
1588 bool auto_mark,
1589 void (*callback)(void *, bool),
1590 void *private_data);
1591
1592 struct lock_request *ctdb_lock_db(struct ctdb_db_context *ctdb_db,
1593 bool auto_mark,
1594 void (*callback)(void *, bool),
1595 void *private_data);
1596
1597 struct lock_request *ctdb_lock_alldb_prio(struct ctdb_context *ctdb,
1598 uint32_t priority,
1599 bool auto_mark,
1600 void (*callback)(void *, bool),
1601 void *private_data);
1602
1603 struct lock_request *ctdb_lock_alldb(struct ctdb_context *ctdb,
1604 bool auto_mark,
1605 void (*callback)(void *, bool),
1606 void *private_data);
1607
1608 int mkdir_p(const char *dir, int mode);
1609 void mkdir_p_or_die(const char *dir, int mode);
1610
1611 #endif
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