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ctdb-daemon: Make old list_of_nodes() function static
[Samba.git] / ctdb / server / ctdb_client.c
blobc5ffa121c3da56321f8f620275fbdab30b6792a1
1 /*
2 ctdb daemon code
3
4 Copyright (C) Andrew Tridgell 2007
5 Copyright (C) Ronnie Sahlberg 2007
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, see <http://www.gnu.org/licenses/>.
19 */
20
21 #include "replace.h"
22 #include "system/network.h"
23 #include "system/filesys.h"
24 #include "system/locale.h"
25
26 #include <talloc.h>
27 #include <tevent.h>
28 #include <tdb.h>
29
30 #include "lib/tdb_wrap/tdb_wrap.h"
31 #include "lib/util/dlinklist.h"
32 #include "lib/util/time.h"
33 #include "lib/util/debug.h"
34 #include "lib/util/samba_util.h"
35
36 #include "ctdb_private.h"
37 #include "ctdb_client.h"
38
39 #include "common/reqid.h"
40 #include "common/system.h"
41 #include "common/common.h"
42 #include "common/logging.h"
43
44 /*
45 allocate a packet for use in client<->daemon communication
46 */
47 struct ctdb_req_header *_ctdbd_allocate_pkt(struct ctdb_context *ctdb,
48 TALLOC_CTX *mem_ctx,
49 enum ctdb_operation operation,
50 size_t length, size_t slength,
51 const char *type)
52 {
53 int size;
54 struct ctdb_req_header *hdr;
55
56 length = MAX(length, slength);
57 size = (length+(CTDB_DS_ALIGNMENT-1)) & ~(CTDB_DS_ALIGNMENT-1);
58
59 hdr = (struct ctdb_req_header *)talloc_zero_size(mem_ctx, size);
60 if (hdr == NULL) {
61 DEBUG(DEBUG_ERR,("Unable to allocate packet for operation %u of length %u\n",
62 operation, (unsigned)length));
63 return NULL;
64 }
65 talloc_set_name_const(hdr, type);
66 hdr->length = length;
67 hdr->operation = operation;
68 hdr->ctdb_magic = CTDB_MAGIC;
69 hdr->ctdb_version = CTDB_PROTOCOL;
70 hdr->srcnode = ctdb->pnn;
71 if (ctdb->vnn_map) {
72 hdr->generation = ctdb->vnn_map->generation;
73 }
74
75 return hdr;
76 }
77
78 /*
79 local version of ctdb_call
80 */
81 int ctdb_call_local(struct ctdb_db_context *ctdb_db, struct ctdb_call *call,
82 struct ctdb_ltdb_header *header, TALLOC_CTX *mem_ctx,
83 TDB_DATA *data, bool updatetdb)
84 {
85 struct ctdb_call_info *c;
86 struct ctdb_registered_call *fn;
87 struct ctdb_context *ctdb = ctdb_db->ctdb;
88
89 c = talloc_zero(mem_ctx, struct ctdb_call_info);
90 CTDB_NO_MEMORY(ctdb, c);
91
92 c->key = call->key;
93 c->call_data = &call->call_data;
94 c->record_data.dptr = talloc_memdup(c, data->dptr, data->dsize);
95 c->record_data.dsize = data->dsize;
96 CTDB_NO_MEMORY(ctdb, c->record_data.dptr);
97 c->header = header;
98
99 for (fn=ctdb_db->calls;fn;fn=fn->next) {
100 if (fn->id == call->call_id) break;
101 }
102 if (fn == NULL) {
103 ctdb_set_error(ctdb, "Unknown call id %u\n", call->call_id);
104 talloc_free(c);
105 return -1;
106 }
107
108 if (fn->fn(c) != 0) {
109 ctdb_set_error(ctdb, "ctdb_call %u failed\n", call->call_id);
110 talloc_free(c);
111 return -1;
112 }
113
114 /* we need to force the record to be written out if this was a remote access */
115 if (c->new_data == NULL) {
116 c->new_data = &c->record_data;
117 }
118
119 if (c->new_data && updatetdb) {
120 /* XXX check that we always have the lock here? */
121 if (ctdb_ltdb_store(ctdb_db, call->key, header, *c->new_data) != 0) {
122 ctdb_set_error(ctdb, "ctdb_call tdb_store failed\n");
123 talloc_free(c);
124 return -1;
125 }
126 }
127
128 if (c->reply_data) {
129 call->reply_data = *c->reply_data;
130
131 talloc_steal(call, call->reply_data.dptr);
132 talloc_set_name_const(call->reply_data.dptr, __location__);
133 } else {
134 call->reply_data.dptr = NULL;
135 call->reply_data.dsize = 0;
136 }
137 call->status = c->status;
138
139 talloc_free(c);
140
141 return 0;
142 }
143
144
145 /*
146 queue a packet for sending from client to daemon
147 */
148 static int ctdb_client_queue_pkt(struct ctdb_context *ctdb, struct ctdb_req_header *hdr)
149 {
150 return ctdb_queue_send(ctdb->daemon.queue, (uint8_t *)hdr, hdr->length);
151 }
152
153
154 /*
155 called when a CTDB_REPLY_CALL packet comes in in the client
156
157 This packet comes in response to a CTDB_REQ_CALL request packet. It
158 contains any reply data from the call
159 */
160 static void ctdb_client_reply_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr)
161 {
162 struct ctdb_reply_call_old *c = (struct ctdb_reply_call_old *)hdr;
163 struct ctdb_client_call_state *state;
164
165 state = reqid_find(ctdb->idr, hdr->reqid, struct ctdb_client_call_state);
166 if (state == NULL) {
167 DEBUG(DEBUG_ERR,(__location__ " reqid %u not found\n", hdr->reqid));
168 return;
169 }
170
171 if (hdr->reqid != state->reqid) {
172 /* we found a record but it was the wrong one */
173 DEBUG(DEBUG_ERR, ("Dropped client call reply with reqid:%u\n",hdr->reqid));
174 return;
175 }
176
177 state->call->reply_data.dptr = c->data;
178 state->call->reply_data.dsize = c->datalen;
179 state->call->status = c->status;
180
181 talloc_steal(state, c);
182
183 state->state = CTDB_CALL_DONE;
184
185 if (state->async.fn) {
186 state->async.fn(state);
187 }
188 }
189
190 void ctdb_request_message(struct ctdb_context *ctdb,
191 struct ctdb_req_header *hdr)
192 {
193 struct ctdb_req_message_old *c = (struct ctdb_req_message_old *)hdr;
194 TDB_DATA data;
195
196 data.dsize = c->datalen;
197 data.dptr = talloc_memdup(c, &c->data[0], c->datalen);
198 if (data.dptr == NULL) {
199 DEBUG(DEBUG_ERR, (__location__ " Memory allocation failure\n"));
200 return;
201 }
202
203 srvid_dispatch(ctdb->srv, c->srvid, CTDB_SRVID_ALL, data);
204 }
205
206 static void ctdb_client_reply_control(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
207
208 /*
209 this is called in the client, when data comes in from the daemon
210 */
211 void ctdb_client_read_cb(uint8_t *data, size_t cnt, void *args)
212 {
213 struct ctdb_context *ctdb = talloc_get_type(args, struct ctdb_context);
214 struct ctdb_req_header *hdr = (struct ctdb_req_header *)data;
215 TALLOC_CTX *tmp_ctx;
216
217 /* place the packet as a child of a tmp_ctx. We then use
218 talloc_free() below to free it. If any of the calls want
219 to keep it, then they will steal it somewhere else, and the
220 talloc_free() will be a no-op */
221 tmp_ctx = talloc_new(ctdb);
222 talloc_steal(tmp_ctx, hdr);
223
224 if (cnt == 0) {
225 DEBUG(DEBUG_CRIT,("Daemon has exited - shutting down client\n"));
226 exit(1);
227 }
228
229 if (cnt < sizeof(*hdr)) {
230 DEBUG(DEBUG_CRIT,("Bad packet length %u in client\n", (unsigned)cnt));
231 goto done;
232 }
233 if (cnt != hdr->length) {
234 ctdb_set_error(ctdb, "Bad header length %u expected %u in client\n",
235 (unsigned)hdr->length, (unsigned)cnt);
236 goto done;
237 }
238
239 if (hdr->ctdb_magic != CTDB_MAGIC) {
240 ctdb_set_error(ctdb, "Non CTDB packet rejected in client\n");
241 goto done;
242 }
243
244 if (hdr->ctdb_version != CTDB_PROTOCOL) {
245 ctdb_set_error(ctdb, "Bad CTDB version 0x%x rejected in client\n", hdr->ctdb_version);
246 goto done;
247 }
248
249 switch (hdr->operation) {
250 case CTDB_REPLY_CALL:
251 ctdb_client_reply_call(ctdb, hdr);
252 break;
253
254 case CTDB_REQ_MESSAGE:
255 ctdb_request_message(ctdb, hdr);
256 break;
257
258 case CTDB_REPLY_CONTROL:
259 ctdb_client_reply_control(ctdb, hdr);
260 break;
261
262 default:
263 DEBUG(DEBUG_CRIT,("bogus operation code:%u\n",hdr->operation));
264 }
265
266 done:
267 talloc_free(tmp_ctx);
268 }
269
270 /*
271 connect to a unix domain socket
272 */
273 int ctdb_socket_connect(struct ctdb_context *ctdb)
274 {
275 struct sockaddr_un addr;
276 int ret;
277
278 memset(&addr, 0, sizeof(addr));
279 addr.sun_family = AF_UNIX;
280 strncpy(addr.sun_path, ctdb->daemon.name, sizeof(addr.sun_path)-1);
281
282 ctdb->daemon.sd = socket(AF_UNIX, SOCK_STREAM, 0);
283 if (ctdb->daemon.sd == -1) {
284 DEBUG(DEBUG_ERR,(__location__ " Failed to open client socket. Errno:%s(%d)\n", strerror(errno), errno));
285 return -1;
286 }
287
288 if (connect(ctdb->daemon.sd, (struct sockaddr *)&addr, sizeof(addr)) == -1) {
289 DEBUG(DEBUG_ERR,
290 (__location__
291 "Failed to connect client socket to daemon (%s)\n",
292 strerror(errno)));
293 close(ctdb->daemon.sd);
294 ctdb->daemon.sd = -1;
295 return -1;
296 }
297
298 ret = set_blocking(ctdb->daemon.sd, false);
299 if (ret != 0) {
300 DEBUG(DEBUG_ERR,
301 (__location__
302 " failed to set socket non-blocking (%s)\n",
303 strerror(errno)));
304 close(ctdb->daemon.sd);
305 ctdb->daemon.sd = -1;
306 return -1;
307 }
308
309 set_close_on_exec(ctdb->daemon.sd);
310
311 ctdb->daemon.queue = ctdb_queue_setup(ctdb, ctdb, ctdb->daemon.sd,
312 CTDB_DS_ALIGNMENT,
313 ctdb_client_read_cb, ctdb, "to-ctdbd");
314 return 0;
315 }
316
317
318 struct ctdb_record_handle {
319 struct ctdb_db_context *ctdb_db;
320 TDB_DATA key;
321 TDB_DATA *data;
322 struct ctdb_ltdb_header header;
323 };
324
325
326 /*
327 make a recv call to the local ctdb daemon - called from client context
328
329 This is called when the program wants to wait for a ctdb_call to complete and get the
330 results. This call will block unless the call has already completed.
331 */
332 int ctdb_call_recv(struct ctdb_client_call_state *state, struct ctdb_call *call)
333 {
334 if (state == NULL) {
335 return -1;
336 }
337
338 while (state->state < CTDB_CALL_DONE) {
339 tevent_loop_once(state->ctdb_db->ctdb->ev);
340 }
341 if (state->state != CTDB_CALL_DONE) {
342 DEBUG(DEBUG_ERR,(__location__ " ctdb_call_recv failed\n"));
343 talloc_free(state);
344 return -1;
345 }
346
347 if (state->call->reply_data.dsize) {
348 call->reply_data.dptr = talloc_memdup(state->ctdb_db,
349 state->call->reply_data.dptr,
350 state->call->reply_data.dsize);
351 call->reply_data.dsize = state->call->reply_data.dsize;
352 } else {
353 call->reply_data.dptr = NULL;
354 call->reply_data.dsize = 0;
355 }
356 call->status = state->call->status;
357 talloc_free(state);
358
359 return call->status;
360 }
361
362
363
364
365 /*
366 destroy a ctdb_call in client
367 */
368 static int ctdb_client_call_destructor(struct ctdb_client_call_state *state)
369 {
370 reqid_remove(state->ctdb_db->ctdb->idr, state->reqid);
371 return 0;
372 }
373
374 /*
375 construct an event driven local ctdb_call
376
377 this is used so that locally processed ctdb_call requests are processed
378 in an event driven manner
379 */
380 static struct ctdb_client_call_state *ctdb_client_call_local_send(struct ctdb_db_context *ctdb_db,
381 struct ctdb_call *call,
382 struct ctdb_ltdb_header *header,
383 TDB_DATA *data)
384 {
385 struct ctdb_client_call_state *state;
386 struct ctdb_context *ctdb = ctdb_db->ctdb;
387 int ret;
388
389 state = talloc_zero(ctdb_db, struct ctdb_client_call_state);
390 CTDB_NO_MEMORY_NULL(ctdb, state);
391 state->call = talloc_zero(state, struct ctdb_call);
392 CTDB_NO_MEMORY_NULL(ctdb, state->call);
393
394 talloc_steal(state, data->dptr);
395
396 state->state = CTDB_CALL_DONE;
397 *(state->call) = *call;
398 state->ctdb_db = ctdb_db;
399
400 ret = ctdb_call_local(ctdb_db, state->call, header, state, data, true);
401 if (ret != 0) {
402 DEBUG(DEBUG_DEBUG,("ctdb_call_local() failed, ignoring return code %d\n", ret));
403 }
404
405 return state;
406 }
407
408 /*
409 make a ctdb call to the local daemon - async send. Called from client context.
410
411 This constructs a ctdb_call request and queues it for processing.
412 This call never blocks.
413 */
414 struct ctdb_client_call_state *ctdb_call_send(struct ctdb_db_context *ctdb_db,
415 struct ctdb_call *call)
416 {
417 struct ctdb_client_call_state *state;
418 struct ctdb_context *ctdb = ctdb_db->ctdb;
419 struct ctdb_ltdb_header header;
420 TDB_DATA data;
421 int ret;
422 size_t len;
423 struct ctdb_req_call_old *c;
424
425 /* if the domain socket is not yet open, open it */
426 if (ctdb->daemon.sd==-1) {
427 ctdb_socket_connect(ctdb);
428 }
429
430 ret = ctdb_ltdb_lock(ctdb_db, call->key);
431 if (ret != 0) {
432 DEBUG(DEBUG_ERR,(__location__ " Failed to get chainlock\n"));
433 return NULL;
434 }
435
436 ret = ctdb_ltdb_fetch(ctdb_db, call->key, &header, ctdb_db, &data);
437
438 if ((call->flags & CTDB_IMMEDIATE_MIGRATION) && (header.flags & CTDB_REC_RO_HAVE_DELEGATIONS)) {
439 ret = -1;
440 }
441
442 if (ret == 0 && header.dmaster == ctdb->pnn) {
443 state = ctdb_client_call_local_send(ctdb_db, call, &header, &data);
444 talloc_free(data.dptr);
445 ctdb_ltdb_unlock(ctdb_db, call->key);
446 return state;
447 }
448
449 ctdb_ltdb_unlock(ctdb_db, call->key);
450 talloc_free(data.dptr);
451
452 state = talloc_zero(ctdb_db, struct ctdb_client_call_state);
453 if (state == NULL) {
454 DEBUG(DEBUG_ERR, (__location__ " failed to allocate state\n"));
455 return NULL;
456 }
457 state->call = talloc_zero(state, struct ctdb_call);
458 if (state->call == NULL) {
459 DEBUG(DEBUG_ERR, (__location__ " failed to allocate state->call\n"));
460 return NULL;
461 }
462
463 len = offsetof(struct ctdb_req_call_old, data) + call->key.dsize + call->call_data.dsize;
464 c = ctdbd_allocate_pkt(ctdb, state, CTDB_REQ_CALL, len, struct ctdb_req_call_old);
465 if (c == NULL) {
466 DEBUG(DEBUG_ERR, (__location__ " failed to allocate packet\n"));
467 return NULL;
468 }
469
470 state->reqid = reqid_new(ctdb->idr, state);
471 state->ctdb_db = ctdb_db;
472 talloc_set_destructor(state, ctdb_client_call_destructor);
473
474 c->hdr.reqid = state->reqid;
475 c->flags = call->flags;
476 c->db_id = ctdb_db->db_id;
477 c->callid = call->call_id;
478 c->hopcount = 0;
479 c->keylen = call->key.dsize;
480 c->calldatalen = call->call_data.dsize;
481 memcpy(&c->data[0], call->key.dptr, call->key.dsize);
482 memcpy(&c->data[call->key.dsize],
483 call->call_data.dptr, call->call_data.dsize);
484 *(state->call) = *call;
485 state->call->call_data.dptr = &c->data[call->key.dsize];
486 state->call->key.dptr = &c->data[0];
487
488 state->state = CTDB_CALL_WAIT;
489
490
491 ctdb_client_queue_pkt(ctdb, &c->hdr);
492
493 return state;
494 }
495
496
497 /*
498 full ctdb_call. Equivalent to a ctdb_call_send() followed by a ctdb_call_recv()
499 */
500 int ctdb_call(struct ctdb_db_context *ctdb_db, struct ctdb_call *call)
501 {
502 struct ctdb_client_call_state *state;
503
504 state = ctdb_call_send(ctdb_db, call);
505 return ctdb_call_recv(state, call);
506 }
507
508
509 /*
510 tell the daemon what messaging srvid we will use, and register the message
511 handler function in the client
512 */
513 int ctdb_client_set_message_handler(struct ctdb_context *ctdb, uint64_t srvid,
514 srvid_handler_fn handler,
515 void *private_data)
516 {
517 int res;
518 int32_t status;
519
520 res = ctdb_control(ctdb, CTDB_CURRENT_NODE, srvid,
521 CTDB_CONTROL_REGISTER_SRVID, 0,
522 tdb_null, NULL, NULL, &status, NULL, NULL);
523 if (res != 0 || status != 0) {
524 DEBUG(DEBUG_ERR,
525 ("Failed to register srvid %llu\n",
526 (unsigned long long)srvid));
527 return -1;
528 }
529
530 /* also need to register the handler with our own ctdb structure */
531 return srvid_register(ctdb->srv, ctdb, srvid, handler, private_data);
532 }
533
534 /*
535 tell the daemon we no longer want a srvid
536 */
537 int ctdb_client_remove_message_handler(struct ctdb_context *ctdb,
538 uint64_t srvid, void *private_data)
539 {
540 int res;
541 int32_t status;
542
543 res = ctdb_control(ctdb, CTDB_CURRENT_NODE, srvid,
544 CTDB_CONTROL_DEREGISTER_SRVID, 0,
545 tdb_null, NULL, NULL, &status, NULL, NULL);
546 if (res != 0 || status != 0) {
547 DEBUG(DEBUG_ERR,
548 ("Failed to deregister srvid %llu\n",
549 (unsigned long long)srvid));
550 return -1;
551 }
552
553 /* also need to register the handler with our own ctdb structure */
554 srvid_deregister(ctdb->srv, srvid, private_data);
555 return 0;
556 }
557
558 /*
559 send a message - from client context
560 */
561 int ctdb_client_send_message(struct ctdb_context *ctdb, uint32_t pnn,
562 uint64_t srvid, TDB_DATA data)
563 {
564 struct ctdb_req_message_old *r;
565 int len, res;
566
567 len = offsetof(struct ctdb_req_message_old, data) + data.dsize;
568 r = ctdbd_allocate_pkt(ctdb, ctdb, CTDB_REQ_MESSAGE,
569 len, struct ctdb_req_message_old);
570 CTDB_NO_MEMORY(ctdb, r);
571
572 r->hdr.destnode = pnn;
573 r->srvid = srvid;
574 r->datalen = data.dsize;
575 memcpy(&r->data[0], data.dptr, data.dsize);
576
577 res = ctdb_client_queue_pkt(ctdb, &r->hdr);
578 talloc_free(r);
579 return res;
580 }
581
582
583 /*
584 called when a control completes or timesout to invoke the callback
585 function the user provided
586 */
587 static void invoke_control_callback(struct tevent_context *ev,
588 struct tevent_timer *te,
589 struct timeval t, void *private_data)
590 {
591 struct ctdb_client_control_state *state;
592 TALLOC_CTX *tmp_ctx = talloc_new(NULL);
593 int ret;
594
595 state = talloc_get_type(private_data, struct ctdb_client_control_state);
596 talloc_steal(tmp_ctx, state);
597
598 ret = ctdb_control_recv(state->ctdb, state, state,
599 NULL,
600 NULL,
601 NULL);
602 if (ret != 0) {
603 DEBUG(DEBUG_DEBUG,("ctdb_control_recv() failed, ignoring return code %d\n", ret));
604 }
605
606 talloc_free(tmp_ctx);
607 }
608
609 /*
610 called when a CTDB_REPLY_CONTROL packet comes in in the client
611
612 This packet comes in response to a CTDB_REQ_CONTROL request packet. It
613 contains any reply data from the control
614 */
615 static void ctdb_client_reply_control(struct ctdb_context *ctdb,
616 struct ctdb_req_header *hdr)
617 {
618 struct ctdb_reply_control_old *c = (struct ctdb_reply_control_old *)hdr;
619 struct ctdb_client_control_state *state;
620
621 state = reqid_find(ctdb->idr, hdr->reqid, struct ctdb_client_control_state);
622 if (state == NULL) {
623 DEBUG(DEBUG_ERR,(__location__ " reqid %u not found\n", hdr->reqid));
624 return;
625 }
626
627 if (hdr->reqid != state->reqid) {
628 /* we found a record but it was the wrong one */
629 DEBUG(DEBUG_ERR, ("Dropped orphaned reply control with reqid:%u\n",hdr->reqid));
630 return;
631 }
632
633 state->outdata.dptr = c->data;
634 state->outdata.dsize = c->datalen;
635 state->status = c->status;
636 if (c->errorlen) {
637 state->errormsg = talloc_strndup(state,
638 (char *)&c->data[c->datalen],
639 c->errorlen);
640 }
641
642 /* state->outdata now uses resources from c so we don't want c
643 to just dissappear from under us while state is still alive
644 */
645 talloc_steal(state, c);
646
647 state->state = CTDB_CONTROL_DONE;
648
649 /* if we had a callback registered for this control, pull the response
650 and call the callback.
651 */
652 if (state->async.fn) {
653 tevent_add_timer(ctdb->ev, state, timeval_zero(),
654 invoke_control_callback, state);
655 }
656 }
657
658
659 /*
660 destroy a ctdb_control in client
661 */
662 static int ctdb_client_control_destructor(struct ctdb_client_control_state *state)
663 {
664 reqid_remove(state->ctdb->idr, state->reqid);
665 return 0;
666 }
667
668
669 /* time out handler for ctdb_control */
670 static void control_timeout_func(struct tevent_context *ev,
671 struct tevent_timer *te,
672 struct timeval t, void *private_data)
673 {
674 struct ctdb_client_control_state *state = talloc_get_type(private_data, struct ctdb_client_control_state);
675
676 DEBUG(DEBUG_ERR,(__location__ " control timed out. reqid:%u opcode:%u "
677 "dstnode:%u\n", state->reqid, state->c->opcode,
678 state->c->hdr.destnode));
679
680 state->state = CTDB_CONTROL_TIMEOUT;
681
682 /* if we had a callback registered for this control, pull the response
683 and call the callback.
684 */
685 if (state->async.fn) {
686 tevent_add_timer(state->ctdb->ev, state, timeval_zero(),
687 invoke_control_callback, state);
688 }
689 }
690
691 /* async version of send control request */
692 struct ctdb_client_control_state *ctdb_control_send(struct ctdb_context *ctdb,
693 uint32_t destnode, uint64_t srvid,
694 uint32_t opcode, uint32_t flags, TDB_DATA data,
695 TALLOC_CTX *mem_ctx,
696 struct timeval *timeout,
697 char **errormsg)
698 {
699 struct ctdb_client_control_state *state;
700 size_t len;
701 struct ctdb_req_control_old *c;
702 int ret;
703
704 if (errormsg) {
705 *errormsg = NULL;
706 }
707
708 /* if the domain socket is not yet open, open it */
709 if (ctdb->daemon.sd==-1) {
710 ctdb_socket_connect(ctdb);
711 }
712
713 state = talloc_zero(mem_ctx, struct ctdb_client_control_state);
714 CTDB_NO_MEMORY_NULL(ctdb, state);
715
716 state->ctdb = ctdb;
717 state->reqid = reqid_new(ctdb->idr, state);
718 state->state = CTDB_CONTROL_WAIT;
719 state->errormsg = NULL;
720
721 talloc_set_destructor(state, ctdb_client_control_destructor);
722
723 len = offsetof(struct ctdb_req_control_old, data) + data.dsize;
724 c = ctdbd_allocate_pkt(ctdb, state, CTDB_REQ_CONTROL,
725 len, struct ctdb_req_control_old);
726 state->c = c;
727 CTDB_NO_MEMORY_NULL(ctdb, c);
728 c->hdr.reqid = state->reqid;
729 c->hdr.destnode = destnode;
730 c->opcode = opcode;
731 c->client_id = 0;
732 c->flags = flags;
733 c->srvid = srvid;
734 c->datalen = data.dsize;
735 if (data.dsize) {
736 memcpy(&c->data[0], data.dptr, data.dsize);
737 }
738
739 /* timeout */
740 if (timeout && !timeval_is_zero(timeout)) {
741 tevent_add_timer(ctdb->ev, state, *timeout,
742 control_timeout_func, state);
743 }
744
745 ret = ctdb_client_queue_pkt(ctdb, &(c->hdr));
746 if (ret != 0) {
747 talloc_free(state);
748 return NULL;
749 }
750
751 if (flags & CTDB_CTRL_FLAG_NOREPLY) {
752 talloc_free(state);
753 return NULL;
754 }
755
756 return state;
757 }
758
759
760 /* async version of receive control reply */
761 int ctdb_control_recv(struct ctdb_context *ctdb,
762 struct ctdb_client_control_state *state,
763 TALLOC_CTX *mem_ctx,
764 TDB_DATA *outdata, int32_t *status, char **errormsg)
765 {
766 TALLOC_CTX *tmp_ctx;
767
768 if (status != NULL) {
769 *status = -1;
770 }
771 if (errormsg != NULL) {
772 *errormsg = NULL;
773 }
774
775 if (state == NULL) {
776 return -1;
777 }
778
779 /* prevent double free of state */
780 tmp_ctx = talloc_new(ctdb);
781 talloc_steal(tmp_ctx, state);
782
783 /* loop one event at a time until we either timeout or the control
784 completes.
785 */
786 while (state->state == CTDB_CONTROL_WAIT) {
787 tevent_loop_once(ctdb->ev);
788 }
789
790 if (state->state != CTDB_CONTROL_DONE) {
791 DEBUG(DEBUG_ERR,(__location__ " ctdb_control_recv failed\n"));
792 if (state->async.fn) {
793 state->async.fn(state);
794 }
795 talloc_free(tmp_ctx);
796 return -1;
797 }
798
799 if (state->errormsg) {
800 int s = (state->status == 0 ? -1 : state->status);
801 DEBUG(DEBUG_ERR,("ctdb_control error: '%s'\n", state->errormsg));
802 if (errormsg) {
803 (*errormsg) = talloc_move(mem_ctx, &state->errormsg);
804 }
805 if (state->async.fn) {
806 state->async.fn(state);
807 }
808 talloc_free(tmp_ctx);
809 return s;
810 }
811
812 if (outdata) {
813 *outdata = state->outdata;
814 outdata->dptr = talloc_memdup(mem_ctx, outdata->dptr, outdata->dsize);
815 }
816
817 if (status) {
818 *status = state->status;
819 }
820
821 if (state->async.fn) {
822 state->async.fn(state);
823 }
824
825 talloc_free(tmp_ctx);
826 return 0;
827 }
828
829
830
831 /*
832 send a ctdb control message
833 timeout specifies how long we should wait for a reply.
834 if timeout is NULL we wait indefinitely
835 */
836 int ctdb_control(struct ctdb_context *ctdb, uint32_t destnode, uint64_t srvid,
837 uint32_t opcode, uint32_t flags, TDB_DATA data,
838 TALLOC_CTX *mem_ctx, TDB_DATA *outdata, int32_t *status,
839 struct timeval *timeout,
840 char **errormsg)
841 {
842 struct ctdb_client_control_state *state;
843
844 state = ctdb_control_send(ctdb, destnode, srvid, opcode,
845 flags, data, mem_ctx,
846 timeout, errormsg);
847
848 /* FIXME: Error conditions in ctdb_control_send return NULL without
849 * setting errormsg. So, there is no way to distinguish between sucess
850 * and failure when CTDB_CTRL_FLAG_NOREPLY is set */
851 if (flags & CTDB_CTRL_FLAG_NOREPLY) {
852 if (status != NULL) {
853 *status = 0;
854 }
855 return 0;
856 }
857
858 return ctdb_control_recv(ctdb, state, mem_ctx, outdata, status,
859 errormsg);
860 }
861
862 /*
863 get vnn map from a remote node
864 */
865 int ctdb_ctrl_getvnnmap(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode, TALLOC_CTX *mem_ctx, struct ctdb_vnn_map **vnnmap)
866 {
867 int ret;
868 TDB_DATA outdata;
869 int32_t res;
870 struct ctdb_vnn_map_wire *map;
871
872 ret = ctdb_control(ctdb, destnode, 0,
873 CTDB_CONTROL_GETVNNMAP, 0, tdb_null,
874 mem_ctx, &outdata, &res, &timeout, NULL);
875 if (ret != 0 || res != 0) {
876 DEBUG(DEBUG_ERR,(__location__ " ctdb_control for getvnnmap failed\n"));
877 return -1;
878 }
879
880 map = (struct ctdb_vnn_map_wire *)outdata.dptr;
881 if (outdata.dsize < offsetof(struct ctdb_vnn_map_wire, map) ||
882 outdata.dsize != map->size*sizeof(uint32_t) + offsetof(struct ctdb_vnn_map_wire, map)) {
883 DEBUG(DEBUG_ERR,("Bad vnn map size received in ctdb_ctrl_getvnnmap\n"));
884 return -1;
885 }
886
887 (*vnnmap) = talloc(mem_ctx, struct ctdb_vnn_map);
888 CTDB_NO_MEMORY(ctdb, *vnnmap);
889 (*vnnmap)->generation = map->generation;
890 (*vnnmap)->size = map->size;
891 (*vnnmap)->map = talloc_array(*vnnmap, uint32_t, map->size);
892
893 CTDB_NO_MEMORY(ctdb, (*vnnmap)->map);
894 memcpy((*vnnmap)->map, map->map, sizeof(uint32_t)*map->size);
895 talloc_free(outdata.dptr);
896
897 return 0;
898 }
899
900
901 /*
902 get the recovery mode of a remote node
903 */
904 struct ctdb_client_control_state *
905 ctdb_ctrl_getrecmode_send(struct ctdb_context *ctdb, TALLOC_CTX *mem_ctx, struct timeval timeout, uint32_t destnode)
906 {
907 return ctdb_control_send(ctdb, destnode, 0,
908 CTDB_CONTROL_GET_RECMODE, 0, tdb_null,
909 mem_ctx, &timeout, NULL);
910 }
911
912 int ctdb_ctrl_getrecmode_recv(struct ctdb_context *ctdb, TALLOC_CTX *mem_ctx, struct ctdb_client_control_state *state, uint32_t *recmode)
913 {
914 int ret;
915 int32_t res;
916
917 ret = ctdb_control_recv(ctdb, state, mem_ctx, NULL, &res, NULL);
918 if (ret != 0) {
919 DEBUG(DEBUG_ERR,(__location__ " ctdb_ctrl_getrecmode_recv failed\n"));
920 return -1;
921 }
922
923 if (recmode) {
924 *recmode = (uint32_t)res;
925 }
926
927 return 0;
928 }
929
930 int ctdb_ctrl_getrecmode(struct ctdb_context *ctdb, TALLOC_CTX *mem_ctx, struct timeval timeout, uint32_t destnode, uint32_t *recmode)
931 {
932 struct ctdb_client_control_state *state;
933
934 state = ctdb_ctrl_getrecmode_send(ctdb, mem_ctx, timeout, destnode);
935 return ctdb_ctrl_getrecmode_recv(ctdb, mem_ctx, state, recmode);
936 }
937
938
939
940
941 /*
942 set the recovery mode of a remote node
943 */
944 int ctdb_ctrl_setrecmode(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode, uint32_t recmode)
945 {
946 int ret;
947 TDB_DATA data;
948 int32_t res;
949
950 data.dsize = sizeof(uint32_t);
951 data.dptr = (unsigned char *)&recmode;
952
953 ret = ctdb_control(ctdb, destnode, 0,
954 CTDB_CONTROL_SET_RECMODE, 0, data,
955 NULL, NULL, &res, &timeout, NULL);
956 if (ret != 0 || res != 0) {
957 DEBUG(DEBUG_ERR,(__location__ " ctdb_control for setrecmode failed\n"));
958 return -1;
959 }
960
961 return 0;
962 }
963
964
965
966 /*
967 get the recovery master of a remote node
968 */
969 struct ctdb_client_control_state *
970 ctdb_ctrl_getrecmaster_send(struct ctdb_context *ctdb, TALLOC_CTX *mem_ctx,
971 struct timeval timeout, uint32_t destnode)
972 {
973 return ctdb_control_send(ctdb, destnode, 0,
974 CTDB_CONTROL_GET_RECMASTER, 0, tdb_null,
975 mem_ctx, &timeout, NULL);
976 }
977
978 int ctdb_ctrl_getrecmaster_recv(struct ctdb_context *ctdb, TALLOC_CTX *mem_ctx, struct ctdb_client_control_state *state, uint32_t *recmaster)
979 {
980 int ret;
981 int32_t res;
982
983 ret = ctdb_control_recv(ctdb, state, mem_ctx, NULL, &res, NULL);
984 if (ret != 0) {
985 DEBUG(DEBUG_ERR,(__location__ " ctdb_ctrl_getrecmaster_recv failed\n"));
986 return -1;
987 }
988
989 if (recmaster) {
990 *recmaster = (uint32_t)res;
991 }
992
993 return 0;
994 }
995
996 int ctdb_ctrl_getrecmaster(struct ctdb_context *ctdb, TALLOC_CTX *mem_ctx, struct timeval timeout, uint32_t destnode, uint32_t *recmaster)
997 {
998 struct ctdb_client_control_state *state;
999
1000 state = ctdb_ctrl_getrecmaster_send(ctdb, mem_ctx, timeout, destnode);
1001 return ctdb_ctrl_getrecmaster_recv(ctdb, mem_ctx, state, recmaster);
1002 }
1003
1004
1005 /*
1006 set the recovery master of a remote node
1007 */
1008 int ctdb_ctrl_setrecmaster(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode, uint32_t recmaster)
1009 {
1010 int ret;
1011 TDB_DATA data;
1012 int32_t res;
1013
1014 ZERO_STRUCT(data);
1015 data.dsize = sizeof(uint32_t);
1016 data.dptr = (unsigned char *)&recmaster;
1017
1018 ret = ctdb_control(ctdb, destnode, 0,
1019 CTDB_CONTROL_SET_RECMASTER, 0, data,
1020 NULL, NULL, &res, &timeout, NULL);
1021 if (ret != 0 || res != 0) {
1022 DEBUG(DEBUG_ERR,(__location__ " ctdb_control for setrecmaster failed\n"));
1023 return -1;
1024 }
1025
1026 return 0;
1027 }
1028
1029
1030 /*
1031 get a list of databases off a remote node
1032 */
1033 int ctdb_ctrl_getdbmap(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode,
1034 TALLOC_CTX *mem_ctx, struct ctdb_dbid_map_old **dbmap)
1035 {
1036 int ret;
1037 TDB_DATA outdata;
1038 int32_t res;
1039
1040 ret = ctdb_control(ctdb, destnode, 0,
1041 CTDB_CONTROL_GET_DBMAP, 0, tdb_null,
1042 mem_ctx, &outdata, &res, &timeout, NULL);
1043 if (ret != 0 || res != 0) {
1044 DEBUG(DEBUG_ERR,(__location__ " ctdb_control for getdbmap failed ret:%d res:%d\n", ret, res));
1045 return -1;
1046 }
1047
1048 *dbmap = (struct ctdb_dbid_map_old *)talloc_memdup(mem_ctx, outdata.dptr, outdata.dsize);
1049 talloc_free(outdata.dptr);
1050
1051 return 0;
1052 }
1053
1054 /*
1055 get a list of nodes (vnn and flags ) from a remote node
1056 */
1057 int ctdb_ctrl_getnodemap(struct ctdb_context *ctdb,
1058 struct timeval timeout, uint32_t destnode,
1059 TALLOC_CTX *mem_ctx, struct ctdb_node_map_old **nodemap)
1060 {
1061 int ret;
1062 TDB_DATA outdata;
1063 int32_t res;
1064
1065 ret = ctdb_control(ctdb, destnode, 0,
1066 CTDB_CONTROL_GET_NODEMAP, 0, tdb_null,
1067 mem_ctx, &outdata, &res, &timeout, NULL);
1068 if (ret != 0 || res != 0 || outdata.dsize == 0) {
1069 DEBUG(DEBUG_ERR,(__location__ " ctdb_control for getnodes failed ret:%d res:%d\n", ret, res));
1070 return -1;
1071 }
1072
1073 *nodemap = (struct ctdb_node_map_old *)talloc_memdup(mem_ctx, outdata.dptr, outdata.dsize);
1074 talloc_free(outdata.dptr);
1075 return 0;
1076 }
1077
1078 int ctdb_ctrl_get_runstate(struct ctdb_context *ctdb,
1079 struct timeval timeout,
1080 uint32_t destnode,
1081 uint32_t *runstate)
1082 {
1083 TDB_DATA outdata;
1084 int32_t res;
1085 int ret;
1086
1087 ret = ctdb_control(ctdb, destnode, 0, CTDB_CONTROL_GET_RUNSTATE, 0,
1088 tdb_null, ctdb, &outdata, &res, &timeout, NULL);
1089 if (ret != 0 || res != 0) {
1090 DEBUG(DEBUG_ERR,("ctdb_control for get_runstate failed\n"));
1091 return ret != 0 ? ret : res;
1092 }
1093
1094 if (outdata.dsize != sizeof(uint32_t)) {
1095 DEBUG(DEBUG_ERR,("Invalid return data in get_runstate\n"));
1096 talloc_free(outdata.dptr);
1097 return -1;
1098 }
1099
1100 if (runstate != NULL) {
1101 *runstate = *(uint32_t *)outdata.dptr;
1102 }
1103 talloc_free(outdata.dptr);
1104
1105 return 0;
1106 }
1107
1108 /*
1109 find the real path to a ltdb
1110 */
1111 int ctdb_ctrl_getdbpath(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode, uint32_t dbid, TALLOC_CTX *mem_ctx,
1112 const char **path)
1113 {
1114 int ret;
1115 int32_t res;
1116 TDB_DATA data;
1117
1118 data.dptr = (uint8_t *)&dbid;
1119 data.dsize = sizeof(dbid);
1120
1121 ret = ctdb_control(ctdb, destnode, 0,
1122 CTDB_CONTROL_GETDBPATH, 0, data,
1123 mem_ctx, &data, &res, &timeout, NULL);
1124 if (ret != 0 || res != 0) {
1125 return -1;
1126 }
1127
1128 (*path) = talloc_strndup(mem_ctx, (const char *)data.dptr, data.dsize);
1129 if ((*path) == NULL) {
1130 return -1;
1131 }
1132
1133 talloc_free(data.dptr);
1134
1135 return 0;
1136 }
1137
1138 /*
1139 find the name of a db
1140 */
1141 int ctdb_ctrl_getdbname(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode, uint32_t dbid, TALLOC_CTX *mem_ctx,
1142 const char **name)
1143 {
1144 int ret;
1145 int32_t res;
1146 TDB_DATA data;
1147
1148 data.dptr = (uint8_t *)&dbid;
1149 data.dsize = sizeof(dbid);
1150
1151 ret = ctdb_control(ctdb, destnode, 0,
1152 CTDB_CONTROL_GET_DBNAME, 0, data,
1153 mem_ctx, &data, &res, &timeout, NULL);
1154 if (ret != 0 || res != 0) {
1155 return -1;
1156 }
1157
1158 (*name) = talloc_strndup(mem_ctx, (const char *)data.dptr, data.dsize);
1159 if ((*name) == NULL) {
1160 return -1;
1161 }
1162
1163 talloc_free(data.dptr);
1164
1165 return 0;
1166 }
1167
1168 /*
1169 create a database
1170 */
1171 int ctdb_ctrl_createdb(struct ctdb_context *ctdb, struct timeval timeout,
1172 uint32_t destnode, TALLOC_CTX *mem_ctx,
1173 const char *name, uint8_t db_flags, uint32_t *db_id)
1174 {
1175 int ret;
1176 int32_t res;
1177 TDB_DATA data;
1178 uint32_t opcode;
1179
1180 data.dptr = discard_const(name);
1181 data.dsize = strlen(name)+1;
1182
1183 if (db_flags & CTDB_DB_FLAGS_PERSISTENT) {
1184 opcode = CTDB_CONTROL_DB_ATTACH_PERSISTENT;
1185 } else if (db_flags & CTDB_DB_FLAGS_REPLICATED) {
1186 opcode = CTDB_CONTROL_DB_ATTACH_REPLICATED;
1187 } else {
1188 opcode = CTDB_CONTROL_DB_ATTACH;
1189 }
1190
1191 ret = ctdb_control(ctdb, destnode, 0, opcode, 0, data,
1192 mem_ctx, &data, &res, &timeout, NULL);
1193
1194 if (ret != 0 || res != 0) {
1195 return -1;
1196 }
1197
1198 if (data.dsize != sizeof(uint32_t)) {
1199 TALLOC_FREE(data.dptr);
1200 return -1;
1201 }
1202 if (db_id != NULL) {
1203 *db_id = *(uint32_t *)data.dptr;
1204 }
1205 talloc_free(data.dptr);
1206
1207 return 0;
1208 }
1209
1210 /*
1211 get debug level on a node
1212 */
1213 int ctdb_ctrl_get_debuglevel(struct ctdb_context *ctdb, uint32_t destnode, int32_t *level)
1214 {
1215 int ret;
1216 int32_t res;
1217 TDB_DATA data;
1218
1219 ret = ctdb_control(ctdb, destnode, 0, CTDB_CONTROL_GET_DEBUG, 0, tdb_null,
1220 ctdb, &data, &res, NULL, NULL);
1221 if (ret != 0 || res != 0) {
1222 return -1;
1223 }
1224 if (data.dsize != sizeof(int32_t)) {
1225 DEBUG(DEBUG_ERR,("Bad control reply size in ctdb_get_debuglevel (got %u)\n",
1226 (unsigned)data.dsize));
1227 return -1;
1228 }
1229 *level = *(int32_t *)data.dptr;
1230 talloc_free(data.dptr);
1231 return 0;
1232 }
1233
1234 /*
1235 * Get db open flags
1236 */
1237 int ctdb_ctrl_db_open_flags(struct ctdb_context *ctdb, uint32_t db_id,
1238 int *tdb_flags)
1239 {
1240 TDB_DATA indata, outdata;
1241 int ret;
1242 int32_t res;
1243
1244 indata.dptr = (uint8_t *)&db_id;
1245 indata.dsize = sizeof(db_id);
1246
1247 ret = ctdb_control(ctdb, CTDB_CURRENT_NODE, 0,
1248 CTDB_CONTROL_DB_OPEN_FLAGS, 0, indata,
1249 ctdb, &outdata, &res, NULL, NULL);
1250 if (ret != 0 || res != 0) {
1251 D_ERR("ctdb control for db open flags failed\n");
1252 return -1;
1253 }
1254
1255 if (outdata.dsize != sizeof(int32_t)) {
1256 D_ERR(__location__ " expected %zi bytes, received %zi bytes\n",
1257 sizeof(int32_t), outdata.dsize);
1258 talloc_free(outdata.dptr);
1259 return -1;
1260 }
1261
1262 *tdb_flags = *(int32_t *)outdata.dptr;
1263 talloc_free(outdata.dptr);
1264 return 0;
1265 }
1266
1267 /*
1268 attach to a specific database - client call
1269 */
1270 struct ctdb_db_context *ctdb_attach(struct ctdb_context *ctdb,
1271 struct timeval timeout,
1272 const char *name,
1273 uint8_t db_flags)
1274 {
1275 struct ctdb_db_context *ctdb_db;
1276 int ret;
1277 int tdb_flags;
1278
1279 ctdb_db = ctdb_db_handle(ctdb, name);
1280 if (ctdb_db) {
1281 return ctdb_db;
1282 }
1283
1284 ctdb_db = talloc_zero(ctdb, struct ctdb_db_context);
1285 CTDB_NO_MEMORY_NULL(ctdb, ctdb_db);
1286
1287 ctdb_db->ctdb = ctdb;
1288 ctdb_db->db_name = talloc_strdup(ctdb_db, name);
1289 CTDB_NO_MEMORY_NULL(ctdb, ctdb_db->db_name);
1290
1291 /* tell ctdb daemon to attach */
1292 ret = ctdb_ctrl_createdb(ctdb, timeout, CTDB_CURRENT_NODE,
1293 ctdb_db, name, db_flags, &ctdb_db->db_id);
1294 if (ret != 0) {
1295 DEBUG(DEBUG_ERR,("Failed to attach to database '%s'\n", name));
1296 talloc_free(ctdb_db);
1297 return NULL;
1298 }
1299
1300 ret = ctdb_ctrl_getdbpath(ctdb, timeout, CTDB_CURRENT_NODE, ctdb_db->db_id, ctdb_db, &ctdb_db->db_path);
1301 if (ret != 0) {
1302 DEBUG(DEBUG_ERR,("Failed to get dbpath for database '%s'\n", name));
1303 talloc_free(ctdb_db);
1304 return NULL;
1305 }
1306
1307 ret = ctdb_ctrl_db_open_flags(ctdb, ctdb_db->db_id, &tdb_flags);
1308 if (ret != 0) {
1309 D_ERR("Failed to get tdb_flags for database '%s'\n", name);
1310 talloc_free(ctdb_db);
1311 return NULL;
1312 }
1313
1314 ctdb_db->ltdb = tdb_wrap_open(ctdb_db, ctdb_db->db_path, 0, tdb_flags,
1315 O_RDWR, 0);
1316 if (ctdb_db->ltdb == NULL) {
1317 ctdb_set_error(ctdb, "Failed to open tdb '%s'\n", ctdb_db->db_path);
1318 talloc_free(ctdb_db);
1319 return NULL;
1320 }
1321
1322 ctdb_db->db_flags = db_flags;
1323
1324 DLIST_ADD(ctdb->db_list, ctdb_db);
1325
1326 /* add well known functions */
1327 ctdb_set_call(ctdb_db, ctdb_null_func, CTDB_NULL_FUNC);
1328 ctdb_set_call(ctdb_db, ctdb_fetch_func, CTDB_FETCH_FUNC);
1329 ctdb_set_call(ctdb_db, ctdb_fetch_with_header_func, CTDB_FETCH_WITH_HEADER_FUNC);
1330
1331 return ctdb_db;
1332 }
1333
1334 /*
1335 setup a call for a database
1336 */
1337 int ctdb_set_call(struct ctdb_db_context *ctdb_db, ctdb_fn_t fn, uint32_t id)
1338 {
1339 struct ctdb_registered_call *call;
1340
1341 /* register locally */
1342 call = talloc(ctdb_db, struct ctdb_registered_call);
1343 call->fn = fn;
1344 call->id = id;
1345
1346 DLIST_ADD(ctdb_db->calls, call);
1347 return 0;
1348 }
1349
1350 /* Freeze all databases */
1351 int ctdb_ctrl_freeze(struct ctdb_context *ctdb, struct timeval timeout,
1352 uint32_t destnode)
1353 {
1354 int ret;
1355 int32_t res;
1356
1357 ret = ctdb_control(ctdb, destnode, 0,
1358 CTDB_CONTROL_FREEZE, 0, tdb_null,
1359 NULL, NULL, &res, &timeout, NULL);
1360 if (ret != 0 || res != 0) {
1361 DEBUG(DEBUG_ERR, ("ctdb_ctrl_freeze_priority failed\n"));
1362 return -1;
1363 }
1364
1365 return 0;
1366 }
1367
1368 /*
1369 get pnn of a node, or -1
1370 */
1371 int ctdb_ctrl_getpnn(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode)
1372 {
1373 int ret;
1374 int32_t res;
1375
1376 ret = ctdb_control(ctdb, destnode, 0,
1377 CTDB_CONTROL_GET_PNN, 0, tdb_null,
1378 NULL, NULL, &res, &timeout, NULL);
1379 if (ret != 0) {
1380 DEBUG(DEBUG_ERR,(__location__ " ctdb_control for getpnn failed\n"));
1381 return -1;
1382 }
1383
1384 return res;
1385 }
1386
1387 int ctdb_ctrl_get_public_ips_flags(struct ctdb_context *ctdb,
1388 struct timeval timeout, uint32_t destnode,
1389 TALLOC_CTX *mem_ctx,
1390 uint32_t flags,
1391 struct ctdb_public_ip_list_old **ips)
1392 {
1393 int ret;
1394 TDB_DATA outdata;
1395 int32_t res;
1396
1397 ret = ctdb_control(ctdb, destnode, 0,
1398 CTDB_CONTROL_GET_PUBLIC_IPS, flags, tdb_null,
1399 mem_ctx, &outdata, &res, &timeout, NULL);
1400 if (ret != 0 || res != 0) {
1401 DEBUG(DEBUG_ERR,(__location__
1402 " ctdb_control for getpublicips failed ret:%d res:%d\n",
1403 ret, res));
1404 return -1;
1405 }
1406
1407 *ips = (struct ctdb_public_ip_list_old *)talloc_memdup(mem_ctx, outdata.dptr, outdata.dsize);
1408 talloc_free(outdata.dptr);
1409
1410 return 0;
1411 }
1412
1413 int ctdb_ctrl_get_public_ips(struct ctdb_context *ctdb,
1414 struct timeval timeout, uint32_t destnode,
1415 TALLOC_CTX *mem_ctx,
1416 struct ctdb_public_ip_list_old **ips)
1417 {
1418 return ctdb_ctrl_get_public_ips_flags(ctdb, timeout,
1419 destnode, mem_ctx,
1420 0, ips);
1421 }
1422
1423 int ctdb_ctrl_get_ifaces(struct ctdb_context *ctdb,
1424 struct timeval timeout, uint32_t destnode,
1425 TALLOC_CTX *mem_ctx,
1426 struct ctdb_iface_list_old **_ifaces)
1427 {
1428 int ret;
1429 TDB_DATA outdata;
1430 int32_t res;
1431 struct ctdb_iface_list_old *ifaces;
1432 uint32_t len;
1433 uint32_t i;
1434
1435 ret = ctdb_control(ctdb, destnode, 0,
1436 CTDB_CONTROL_GET_IFACES, 0, tdb_null,
1437 mem_ctx, &outdata, &res, &timeout, NULL);
1438 if (ret != 0 || res != 0) {
1439 DEBUG(DEBUG_ERR,(__location__ " ctdb_control for get ifaces "
1440 "failed ret:%d res:%d\n",
1441 ret, res));
1442 return -1;
1443 }
1444
1445 len = offsetof(struct ctdb_iface_list_old, ifaces);
1446 if (len > outdata.dsize) {
1447 DEBUG(DEBUG_ERR,(__location__ " ctdb_control for get ifaces "
1448 "returned invalid data with size %u > %u\n",
1449 (unsigned int)outdata.dsize,
1450 (unsigned int)len));
1451 dump_data(DEBUG_DEBUG, outdata.dptr, outdata.dsize);
1452 return -1;
1453 }
1454
1455 ifaces = (struct ctdb_iface_list_old *)outdata.dptr;
1456 len += ifaces->num*sizeof(struct ctdb_iface);
1457
1458 if (len > outdata.dsize) {
1459 DEBUG(DEBUG_ERR,(__location__ " ctdb_control for get ifaces "
1460 "returned invalid data with size %u > %u\n",
1461 (unsigned int)outdata.dsize,
1462 (unsigned int)len));
1463 dump_data(DEBUG_DEBUG, outdata.dptr, outdata.dsize);
1464 return -1;
1465 }
1466
1467 /* make sure we null terminate the returned strings */
1468 for (i=0; i < ifaces->num; i++) {
1469 ifaces->ifaces[i].name[CTDB_IFACE_SIZE] = '\0';
1470 }
1471
1472 *_ifaces = (struct ctdb_iface_list_old *)talloc_memdup(mem_ctx,
1473 outdata.dptr,
1474 outdata.dsize);
1475 talloc_free(outdata.dptr);
1476 if (*_ifaces == NULL) {
1477 DEBUG(DEBUG_ERR,(__location__ " ctdb_control for get ifaces "
1478 "talloc_memdup size %u failed\n",
1479 (unsigned int)outdata.dsize));
1480 return -1;
1481 }
1482
1483 return 0;
1484 }
1485
1486 /*
1487 set/clear the permanent disabled bit on a remote node
1488 */
1489 int ctdb_ctrl_modflags(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode,
1490 uint32_t set, uint32_t clear)
1491 {
1492 int ret;
1493 TDB_DATA data;
1494 struct ctdb_node_map_old *nodemap=NULL;
1495 struct ctdb_node_flag_change c;
1496 TALLOC_CTX *tmp_ctx = talloc_new(ctdb);
1497 uint32_t recmaster;
1498 uint32_t *nodes;
1499
1500
1501 /* find the recovery master */
1502 ret = ctdb_ctrl_getrecmaster(ctdb, tmp_ctx, timeout, CTDB_CURRENT_NODE, &recmaster);
1503 if (ret != 0) {
1504 DEBUG(DEBUG_ERR, (__location__ " Unable to get recmaster from local node\n"));
1505 talloc_free(tmp_ctx);
1506 return ret;
1507 }
1508
1509
1510 /* read the node flags from the recmaster */
1511 ret = ctdb_ctrl_getnodemap(ctdb, timeout, recmaster, tmp_ctx, &nodemap);
1512 if (ret != 0) {
1513 DEBUG(DEBUG_ERR, (__location__ " Unable to get nodemap from node %u\n", destnode));
1514 talloc_free(tmp_ctx);
1515 return -1;
1516 }
1517 if (destnode >= nodemap->num) {
1518 DEBUG(DEBUG_ERR,(__location__ " Nodemap from recmaster does not contain node %d\n", destnode));
1519 talloc_free(tmp_ctx);
1520 return -1;
1521 }
1522
1523 c.pnn = destnode;
1524 c.old_flags = nodemap->nodes[destnode].flags;
1525 c.new_flags = c.old_flags;
1526 c.new_flags |= set;
1527 c.new_flags &= ~clear;
1528
1529 data.dsize = sizeof(c);
1530 data.dptr = (unsigned char *)&c;
1531
1532 /* send the flags update to all connected nodes */
1533 nodes = list_of_connected_nodes(ctdb, nodemap, tmp_ctx, true);
1534
1535 if (ctdb_client_async_control(ctdb, CTDB_CONTROL_MODIFY_FLAGS,
1536 nodes, 0,
1537 timeout, false, data,
1538 NULL, NULL,
1539 NULL) != 0) {
1540 DEBUG(DEBUG_ERR, (__location__ " Unable to update nodeflags on remote nodes\n"));
1541
1542 talloc_free(tmp_ctx);
1543 return -1;
1544 }
1545
1546 talloc_free(tmp_ctx);
1547 return 0;
1548 }
1549
1550
1551 /*
1552 get all tunables
1553 */
1554 int ctdb_ctrl_get_all_tunables(struct ctdb_context *ctdb,
1555 struct timeval timeout,
1556 uint32_t destnode,
1557 struct ctdb_tunable_list *tunables)
1558 {
1559 TDB_DATA outdata;
1560 int ret;
1561 int32_t res;
1562
1563 ret = ctdb_control(ctdb, destnode, 0, CTDB_CONTROL_GET_ALL_TUNABLES, 0, tdb_null, ctdb,
1564 &outdata, &res, &timeout, NULL);
1565 if (ret != 0 || res != 0) {
1566 DEBUG(DEBUG_ERR,(__location__ " ctdb_control for get all tunables failed\n"));
1567 return -1;
1568 }
1569
1570 if (outdata.dsize != sizeof(*tunables)) {
1571 DEBUG(DEBUG_ERR,(__location__ " bad data size %u in ctdb_ctrl_get_all_tunables should be %u\n",
1572 (unsigned)outdata.dsize, (unsigned)sizeof(*tunables)));
1573 return -1;
1574 }
1575
1576 *tunables = *(struct ctdb_tunable_list *)outdata.dptr;
1577 talloc_free(outdata.dptr);
1578 return 0;
1579 }
1580
1581 /*
1582 set some ctdb flags
1583 */
1584 void ctdb_set_flags(struct ctdb_context *ctdb, unsigned flags)
1585 {
1586 ctdb->flags |= flags;
1587 }
1588
1589 const char *ctdb_get_socketname(struct ctdb_context *ctdb)
1590 {
1591 return ctdb->daemon.name;
1592 }
1593
1594 /*
1595 return the pnn of this node
1596 */
1597 uint32_t ctdb_get_pnn(struct ctdb_context *ctdb)
1598 {
1599 return ctdb->pnn;
1600 }
1601
1602 /*
1603 callback for the async helpers used when sending the same control
1604 to multiple nodes in parallell.
1605 */
1606 static void async_callback(struct ctdb_client_control_state *state)
1607 {
1608 struct client_async_data *data = talloc_get_type(state->async.private_data, struct client_async_data);
1609 struct ctdb_context *ctdb = talloc_get_type(state->ctdb, struct ctdb_context);
1610 int ret;
1611 TDB_DATA outdata;
1612 int32_t res = -1;
1613 uint32_t destnode = state->c->hdr.destnode;
1614
1615 outdata.dsize = 0;
1616 outdata.dptr = NULL;
1617
1618 /* one more node has responded with recmode data */
1619 data->count--;
1620
1621 /* if we failed to push the db, then return an error and let
1622 the main loop try again.
1623 */
1624 if (state->state != CTDB_CONTROL_DONE) {
1625 if ( !data->dont_log_errors) {
1626 DEBUG(DEBUG_ERR,("Async operation failed with state %d, opcode:%u\n", state->state, data->opcode));
1627 }
1628 data->fail_count++;
1629 if (state->state == CTDB_CONTROL_TIMEOUT) {
1630 res = -ETIMEDOUT;
1631 } else {
1632 res = -1;
1633 }
1634 if (data->fail_callback) {
1635 data->fail_callback(ctdb, destnode, res, outdata,
1636 data->callback_data);
1637 }
1638 return;
1639 }
1640
1641 state->async.fn = NULL;
1642
1643 ret = ctdb_control_recv(ctdb, state, data, &outdata, &res, NULL);
1644 if ((ret != 0) || (res != 0)) {
1645 if ( !data->dont_log_errors) {
1646 DEBUG(DEBUG_ERR,("Async operation failed with ret=%d res=%d opcode=%u\n", ret, (int)res, data->opcode));
1647 }
1648 data->fail_count++;
1649 if (data->fail_callback) {
1650 data->fail_callback(ctdb, destnode, res, outdata,
1651 data->callback_data);
1652 }
1653 }
1654 if ((ret == 0) && (data->callback != NULL)) {
1655 data->callback(ctdb, destnode, res, outdata,
1656 data->callback_data);
1657 }
1658 }
1659
1660
1661 void ctdb_client_async_add(struct client_async_data *data, struct ctdb_client_control_state *state)
1662 {
1663 /* set up the callback functions */
1664 state->async.fn = async_callback;
1665 state->async.private_data = data;
1666
1667 /* one more control to wait for to complete */
1668 data->count++;
1669 }
1670
1671
1672 /* wait for up to the maximum number of seconds allowed
1673 or until all nodes we expect a response from has replied
1674 */
1675 int ctdb_client_async_wait(struct ctdb_context *ctdb, struct client_async_data *data)
1676 {
1677 while (data->count > 0) {
1678 tevent_loop_once(ctdb->ev);
1679 }
1680 if (data->fail_count != 0) {
1681 if (!data->dont_log_errors) {
1682 DEBUG(DEBUG_ERR,("Async wait failed - fail_count=%u\n",
1683 data->fail_count));
1684 }
1685 return -1;
1686 }
1687 return 0;
1688 }
1689
1690
1691 /*
1692 perform a simple control on the listed nodes
1693 The control cannot return data
1694 */
1695 int ctdb_client_async_control(struct ctdb_context *ctdb,
1696 enum ctdb_controls opcode,
1697 uint32_t *nodes,
1698 uint64_t srvid,
1699 struct timeval timeout,
1700 bool dont_log_errors,
1701 TDB_DATA data,
1702 client_async_callback client_callback,
1703 client_async_callback fail_callback,
1704 void *callback_data)
1705 {
1706 struct client_async_data *async_data;
1707 struct ctdb_client_control_state *state;
1708 int j, num_nodes;
1709
1710 async_data = talloc_zero(ctdb, struct client_async_data);
1711 CTDB_NO_MEMORY_FATAL(ctdb, async_data);
1712 async_data->dont_log_errors = dont_log_errors;
1713 async_data->callback = client_callback;
1714 async_data->fail_callback = fail_callback;
1715 async_data->callback_data = callback_data;
1716 async_data->opcode = opcode;
1717
1718 num_nodes = talloc_get_size(nodes) / sizeof(uint32_t);
1719
1720 /* loop over all nodes and send an async control to each of them */
1721 for (j=0; j<num_nodes; j++) {
1722 uint32_t pnn = nodes[j];
1723
1724 state = ctdb_control_send(ctdb, pnn, srvid, opcode,
1725 0, data, async_data, &timeout, NULL);
1726 if (state == NULL) {
1727 DEBUG(DEBUG_ERR,(__location__ " Failed to call async control %u\n", (unsigned)opcode));
1728 talloc_free(async_data);
1729 return -1;
1730 }
1731
1732 ctdb_client_async_add(async_data, state);
1733 }
1734
1735 if (ctdb_client_async_wait(ctdb, async_data) != 0) {
1736 talloc_free(async_data);
1737 return -1;
1738 }
1739
1740 talloc_free(async_data);
1741 return 0;
1742 }
1743
1744 uint32_t *list_of_vnnmap_nodes(struct ctdb_context *ctdb,
1745 struct ctdb_vnn_map *vnn_map,
1746 TALLOC_CTX *mem_ctx,
1747 bool include_self)
1748 {
1749 int i, j, num_nodes;
1750 uint32_t *nodes;
1751
1752 for (i=num_nodes=0;i<vnn_map->size;i++) {
1753 if (vnn_map->map[i] == ctdb->pnn && !include_self) {
1754 continue;
1755 }
1756 num_nodes++;
1757 }
1758
1759 nodes = talloc_array(mem_ctx, uint32_t, num_nodes);
1760 CTDB_NO_MEMORY_FATAL(ctdb, nodes);
1761
1762 for (i=j=0;i<vnn_map->size;i++) {
1763 if (vnn_map->map[i] == ctdb->pnn && !include_self) {
1764 continue;
1765 }
1766 nodes[j++] = vnn_map->map[i];
1767 }
1768
1769 return nodes;
1770 }
1771
1772 /* Get list of nodes not including those with flags specified by mask.
1773 * If exclude_pnn is not -1 then exclude that pnn from the list.
1774 */
1775 static uint32_t *list_of_nodes(struct ctdb_context *ctdb,
1776 struct ctdb_node_map_old *node_map,
1777 TALLOC_CTX *mem_ctx,
1778 uint32_t mask,
1779 int exclude_pnn)
1780 {
1781 int i, j, num_nodes;
1782 uint32_t *nodes;
1783
1784 for (i=num_nodes=0;i<node_map->num;i++) {
1785 if (node_map->nodes[i].flags & mask) {
1786 continue;
1787 }
1788 if (node_map->nodes[i].pnn == exclude_pnn) {
1789 continue;
1790 }
1791 num_nodes++;
1792 }
1793
1794 nodes = talloc_array(mem_ctx, uint32_t, num_nodes);
1795 CTDB_NO_MEMORY_FATAL(ctdb, nodes);
1796
1797 for (i=j=0;i<node_map->num;i++) {
1798 if (node_map->nodes[i].flags & mask) {
1799 continue;
1800 }
1801 if (node_map->nodes[i].pnn == exclude_pnn) {
1802 continue;
1803 }
1804 nodes[j++] = node_map->nodes[i].pnn;
1805 }
1806
1807 return nodes;
1808 }
1809
1810 uint32_t *list_of_active_nodes(struct ctdb_context *ctdb,
1811 struct ctdb_node_map_old *node_map,
1812 TALLOC_CTX *mem_ctx,
1813 bool include_self)
1814 {
1815 return list_of_nodes(ctdb, node_map, mem_ctx, NODE_FLAGS_INACTIVE,
1816 include_self ? -1 : ctdb->pnn);
1817 }
1818
1819 uint32_t *list_of_connected_nodes(struct ctdb_context *ctdb,
1820 struct ctdb_node_map_old *node_map,
1821 TALLOC_CTX *mem_ctx,
1822 bool include_self)
1823 {
1824 return list_of_nodes(ctdb, node_map, mem_ctx, NODE_FLAGS_DISCONNECTED,
1825 include_self ? -1 : ctdb->pnn);
1826 }
1827
1828 /*
1829 get capabilities of a remote node
1830 */
1831 struct ctdb_client_control_state *
1832 ctdb_ctrl_getcapabilities_send(struct ctdb_context *ctdb, TALLOC_CTX *mem_ctx, struct timeval timeout, uint32_t destnode)
1833 {
1834 return ctdb_control_send(ctdb, destnode, 0,
1835 CTDB_CONTROL_GET_CAPABILITIES, 0, tdb_null,
1836 mem_ctx, &timeout, NULL);
1837 }
1838
1839 int ctdb_ctrl_getcapabilities_recv(struct ctdb_context *ctdb, TALLOC_CTX *mem_ctx, struct ctdb_client_control_state *state, uint32_t *capabilities)
1840 {
1841 int ret;
1842 int32_t res;
1843 TDB_DATA outdata;
1844
1845 ret = ctdb_control_recv(ctdb, state, mem_ctx, &outdata, &res, NULL);
1846 if ( (ret != 0) || (res != 0) ) {
1847 DEBUG(DEBUG_ERR,(__location__ " ctdb_ctrl_getcapabilities_recv failed\n"));
1848 return -1;
1849 }
1850
1851 if (capabilities) {
1852 *capabilities = *((uint32_t *)outdata.dptr);
1853 }
1854
1855 return 0;
1856 }
1857
1858 int ctdb_ctrl_getcapabilities(struct ctdb_context *ctdb, struct timeval timeout, uint32_t destnode, uint32_t *capabilities)
1859 {
1860 struct ctdb_client_control_state *state;
1861 TALLOC_CTX *tmp_ctx = talloc_new(NULL);
1862 int ret;
1863
1864 state = ctdb_ctrl_getcapabilities_send(ctdb, tmp_ctx, timeout, destnode);
1865 ret = ctdb_ctrl_getcapabilities_recv(ctdb, tmp_ctx, state, capabilities);
1866 talloc_free(tmp_ctx);
1867 return ret;
1868 }
1869
1870 static void get_capabilities_callback(struct ctdb_context *ctdb,
1871 uint32_t node_pnn, int32_t res,
1872 TDB_DATA outdata, void *callback_data)
1873 {
1874 struct ctdb_node_capabilities *caps =
1875 talloc_get_type(callback_data,
1876 struct ctdb_node_capabilities);
1877
1878 if ( (outdata.dsize != sizeof(uint32_t)) || (outdata.dptr == NULL) ) {
1879 DEBUG(DEBUG_ERR, (__location__ " Invalid length/pointer for getcap callback : %u %p\n", (unsigned)outdata.dsize, outdata.dptr));
1880 return;
1881 }
1882
1883 if (node_pnn >= talloc_array_length(caps)) {
1884 DEBUG(DEBUG_ERR,
1885 (__location__ " unexpected PNN %u\n", node_pnn));
1886 return;
1887 }
1888
1889 caps[node_pnn].retrieved = true;
1890 caps[node_pnn].capabilities = *((uint32_t *)outdata.dptr);
1891 }
1892
1893 struct ctdb_node_capabilities *
1894 ctdb_get_capabilities(struct ctdb_context *ctdb,
1895 TALLOC_CTX *mem_ctx,
1896 struct timeval timeout,
1897 struct ctdb_node_map_old *nodemap)
1898 {
1899 uint32_t *nodes;
1900 uint32_t i, res;
1901 struct ctdb_node_capabilities *ret;
1902
1903 nodes = list_of_active_nodes(ctdb, nodemap, mem_ctx, true);
1904
1905 ret = talloc_array(mem_ctx, struct ctdb_node_capabilities,
1906 nodemap->num);
1907 CTDB_NO_MEMORY_NULL(ctdb, ret);
1908 /* Prepopulate the expected PNNs */
1909 for (i = 0; i < talloc_array_length(ret); i++) {
1910 ret[i].retrieved = false;
1911 }
1912
1913 res = ctdb_client_async_control(ctdb, CTDB_CONTROL_GET_CAPABILITIES,
1914 nodes, 0, timeout,
1915 false, tdb_null,
1916 get_capabilities_callback, NULL,
1917 ret);
1918 if (res != 0) {
1919 DEBUG(DEBUG_ERR,
1920 (__location__ " Failed to read node capabilities.\n"));
1921 TALLOC_FREE(ret);
1922 }
1923
1924 return ret;
1925 }
1926
1927 uint32_t *
1928 ctdb_get_node_capabilities(struct ctdb_node_capabilities *caps,
1929 uint32_t pnn)
1930 {
1931 if (pnn < talloc_array_length(caps) && caps[pnn].retrieved) {
1932 return &caps[pnn].capabilities;
1933 }
1934
1935 return NULL;
1936 }
1937
1938 bool ctdb_node_has_capabilities(struct ctdb_node_capabilities *caps,
1939 uint32_t pnn,
1940 uint32_t capabilities_required)
1941 {
1942 uint32_t *capp = ctdb_get_node_capabilities(caps, pnn);
1943 return (capp != NULL) &&
1944 ((*capp & capabilities_required) == capabilities_required);
1945 }
1946
1947 /*
1948 recovery daemon ping to main daemon
1949 */
1950 int ctdb_ctrl_recd_ping(struct ctdb_context *ctdb)
1951 {
1952 int ret;
1953 int32_t res;
1954
1955 ret = ctdb_control(ctdb, CTDB_CURRENT_NODE, 0, CTDB_CONTROL_RECD_PING, 0, tdb_null,
1956 ctdb, NULL, &res, NULL, NULL);
1957 if (ret != 0 || res != 0) {
1958 DEBUG(DEBUG_ERR,("Failed to send recd ping\n"));
1959 return -1;
1960 }
1961
1962 return 0;
1963 }
1964
1965 /*
1966 tell the main daemon how long it took to lock the reclock file
1967 */
1968 int ctdb_ctrl_report_recd_lock_latency(struct ctdb_context *ctdb, struct timeval timeout, double latency)
1969 {
1970 int ret;
1971 int32_t res;
1972 TDB_DATA data;
1973
1974 data.dptr = (uint8_t *)&latency;
1975 data.dsize = sizeof(latency);
1976
1977 ret = ctdb_control(ctdb, CTDB_CURRENT_NODE, 0, CTDB_CONTROL_RECD_RECLOCK_LATENCY, 0, data,
1978 ctdb, NULL, &res, NULL, NULL);
1979 if (ret != 0 || res != 0) {
1980 DEBUG(DEBUG_ERR,("Failed to send recd reclock latency\n"));
1981 return -1;
1982 }
1983
1984 return 0;
1985 }
1986
1987 int ctdb_ctrl_set_ban(struct ctdb_context *ctdb, struct timeval timeout,
1988 uint32_t destnode, struct ctdb_ban_state *bantime)
1989 {
1990 int ret;
1991 TDB_DATA data;
1992 int32_t res;
1993
1994 data.dsize = sizeof(*bantime);
1995 data.dptr = (uint8_t *)bantime;
1996
1997 ret = ctdb_control(ctdb, destnode, 0,
1998 CTDB_CONTROL_SET_BAN_STATE, 0, data,
1999 NULL, NULL, &res, &timeout, NULL);
2000 if (ret != 0 || res != 0) {
2001 DEBUG(DEBUG_ERR,(__location__ " ctdb_control for set ban state failed\n"));
2002 return -1;
2003 }
2004
2005 return 0;
2006 }
2007
2008 struct ctdb_client_control_state *
2009 ctdb_ctrl_updaterecord_send(struct ctdb_context *ctdb, TALLOC_CTX *mem_ctx, struct timeval timeout, uint32_t destnode, struct ctdb_db_context *ctdb_db, TDB_DATA key, struct ctdb_ltdb_header *header, TDB_DATA data)
2010 {
2011 struct ctdb_client_control_state *handle;
2012 struct ctdb_marshall_buffer *m;
2013 struct ctdb_rec_data_old *rec;
2014 TDB_DATA outdata;
2015
2016 m = talloc_zero(mem_ctx, struct ctdb_marshall_buffer);
2017 if (m == NULL) {
2018 DEBUG(DEBUG_ERR, ("Failed to allocate marshall buffer for update record\n"));
2019 return NULL;
2020 }
2021
2022 m->db_id = ctdb_db->db_id;
2023
2024 rec = ctdb_marshall_record(m, 0, key, header, data);
2025 if (rec == NULL) {
2026 DEBUG(DEBUG_ERR,("Failed to marshall record for update record\n"));
2027 talloc_free(m);
2028 return NULL;
2029 }
2030 m = talloc_realloc_size(mem_ctx, m, rec->length + offsetof(struct ctdb_marshall_buffer, data));
2031 if (m == NULL) {
2032 DEBUG(DEBUG_CRIT,(__location__ " Failed to expand recdata\n"));
2033 talloc_free(m);
2034 return NULL;
2035 }
2036 m->count++;
2037 memcpy((uint8_t *)m + offsetof(struct ctdb_marshall_buffer, data), rec, rec->length);
2038
2039
2040 outdata.dptr = (uint8_t *)m;
2041 outdata.dsize = talloc_get_size(m);
2042
2043 handle = ctdb_control_send(ctdb, destnode, 0,
2044 CTDB_CONTROL_UPDATE_RECORD, 0, outdata,
2045 mem_ctx, &timeout, NULL);
2046 talloc_free(m);
2047 return handle;
2048 }
2049
2050 int ctdb_ctrl_updaterecord_recv(struct ctdb_context *ctdb, struct ctdb_client_control_state *state)
2051 {
2052 int ret;
2053 int32_t res;
2054
2055 ret = ctdb_control_recv(ctdb, state, state, NULL, &res, NULL);
2056 if ( (ret != 0) || (res != 0) ){
2057 DEBUG(DEBUG_ERR,(__location__ " ctdb_ctrl_update_record_recv failed\n"));
2058 return -1;
2059 }
2060
2061 return 0;
2062 }
2063
2064 int
2065 ctdb_ctrl_updaterecord(struct ctdb_context *ctdb, TALLOC_CTX *mem_ctx, struct timeval timeout, uint32_t destnode, struct ctdb_db_context *ctdb_db, TDB_DATA key, struct ctdb_ltdb_header *header, TDB_DATA data)
2066 {
2067 struct ctdb_client_control_state *state;
2068
2069 state = ctdb_ctrl_updaterecord_send(ctdb, mem_ctx, timeout, destnode, ctdb_db, key, header, data);
2070 return ctdb_ctrl_updaterecord_recv(ctdb, state);
2071 }
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