corosync  3.1.6
vsf_quorum.c
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1 /*
2  * Copyright (c) 2008-2020 Red Hat, Inc.
3  *
4  * All rights reserved.
5  *
6  * Author: Christine Caulfield (ccaulfie@redhat.com)
7  *
8  * This software licensed under BSD license, the text of which follows:
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions are met:
12  *
13  * - Redistributions of source code must retain the above copyright notice,
14  * this list of conditions and the following disclaimer.
15  * - Redistributions in binary form must reproduce the above copyright notice,
16  * this list of conditions and the following disclaimer in the documentation
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18  * - Neither the name of Red Hat Inc. nor the names of its
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20  * software without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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33  */
34 
35 #include <config.h>
36 
37 #include <pwd.h>
38 #include <grp.h>
39 #include <sys/types.h>
40 #include <sys/poll.h>
41 #include <sys/uio.h>
42 #include <sys/mman.h>
43 #include <sys/socket.h>
44 #include <sys/un.h>
45 #include <sys/time.h>
46 #include <sys/resource.h>
47 #include <netinet/in.h>
48 #include <arpa/inet.h>
49 #include <unistd.h>
50 #include <fcntl.h>
51 #include <stdlib.h>
52 #include <stdio.h>
53 #include <errno.h>
54 #include <sched.h>
55 #include <time.h>
56 
57 #include "quorum.h"
58 #include <corosync/corotypes.h>
59 #include <qb/qbipc_common.h>
60 #include <corosync/corodefs.h>
61 #include <corosync/swab.h>
62 #include <qb/qblist.h>
63 #include <corosync/mar_gen.h>
64 #include <corosync/ipc_quorum.h>
65 #include <corosync/coroapi.h>
66 #include <corosync/logsys.h>
67 #include <corosync/icmap.h>
68 
69 #include "service.h"
70 #include "votequorum.h"
71 #include "vsf_ykd.h"
72 
74 
75 struct quorum_pd {
76  unsigned char track_flags;
77  int tracking_enabled;
78  struct qb_list_head list;
79  void *conn;
81 };
82 
84  struct qb_list_head list;
86  void *context;
87 };
88 
89 static void quorum_sync_init (
90  const unsigned int *trans_list,
91  size_t trans_list_entries,
92  const unsigned int *member_list,
93  size_t member_list_entries,
94  const struct memb_ring_id *ring_id);
95 
96 static int quorum_sync_process (void);
97 
98 static void quorum_sync_activate (void);
99 
100 static void quorum_sync_abort (void);
101 
102 static void message_handler_req_lib_quorum_getquorate (void *conn,
103  const void *msg);
104 static void message_handler_req_lib_quorum_trackstart (void *conn,
105  const void *msg);
106 static void message_handler_req_lib_quorum_trackstop (void *conn,
107  const void *msg);
108 static void message_handler_req_lib_quorum_gettype (void *conn,
109  const void *msg);
110 static void message_handler_req_lib_quorum_model_gettype (void *conn,
111  const void *msg);
112 static void send_library_notification(void *conn);
113 static void send_internal_notification(void);
114 static void send_nodelist_library_notification(void *conn, int send_joined_left_list);
115 static char *quorum_exec_init_fn (struct corosync_api_v1 *api);
116 static int quorum_lib_init_fn (void *conn);
117 static int quorum_lib_exit_fn (void *conn);
118 
119 static int primary_designated = 0;
120 static int quorum_type = 0;
121 static struct corosync_api_v1 *corosync_api;
122 static struct qb_list_head lib_trackers_list;
123 static struct qb_list_head internal_trackers_list;
124 static struct memb_ring_id quorum_ring_id;
125 static struct memb_ring_id last_sync_ring_id;
126 static size_t quorum_view_list_entries = 0;
127 static int quorum_view_list[PROCESSOR_COUNT_MAX];
128 struct quorum_services_api_ver1 *quorum_iface = NULL;
129 
130 static char view_buf[64];
131 
132 static unsigned int my_member_list[PROCESSOR_COUNT_MAX];
133 static size_t my_member_list_entries;
134 static unsigned int my_old_member_list[PROCESSOR_COUNT_MAX];
135 static size_t my_old_member_list_entries = 0;
136 static unsigned int my_left_list[PROCESSOR_COUNT_MAX];
137 static size_t my_left_list_entries;
138 static unsigned int my_joined_list[PROCESSOR_COUNT_MAX];
139 static size_t my_joined_list_entries;
140 
141 static void log_view_list(const unsigned int *view_list, size_t view_list_entries,
142  const char *view_list_type_str)
143 {
144  int total = (int)view_list_entries;
145  int len, pos, ret;
146  int i = 0;
147 
148  while (1) {
149  len = sizeof(view_buf);
150  pos = 0;
151  memset(view_buf, 0, len);
152 
153  for (; i < total; i++) {
154  ret = snprintf(view_buf + pos, len - pos, " " CS_PRI_NODE_ID, view_list[i]);
155  if (ret >= len - pos)
156  break;
157  pos += ret;
158  }
159  log_printf (LOGSYS_LEVEL_NOTICE, "%s[%d]:%s%s",
160  view_list_type_str, total, view_buf, i < total ? "\\" : "");
161 
162  if (i == total)
163  break;
164  }
165 }
166 
167 /* Internal quorum API function */
168 static void quorum_api_set_quorum(const unsigned int *view_list,
169  size_t view_list_entries,
170  int quorum, struct memb_ring_id *ring_id)
171 {
172  int old_quorum = primary_designated;
173  primary_designated = quorum;
174 
175  if (primary_designated && !old_quorum) {
176  log_printf (LOGSYS_LEVEL_NOTICE, "This node is within the primary component and will provide service.");
177  } else if (!primary_designated && old_quorum) {
178  log_printf (LOGSYS_LEVEL_NOTICE, "This node is within the non-primary component and will NOT provide any services.");
179  }
180 
181  quorum_view_list_entries = view_list_entries;
182  memcpy(&quorum_ring_id, ring_id, sizeof (quorum_ring_id));
183  memcpy(quorum_view_list, view_list, sizeof(unsigned int)*view_list_entries);
184 
185  log_view_list(view_list, view_list_entries, "Members");
186 
187  /* Tell internal listeners */
188  send_internal_notification();
189 
190  /* Tell IPC listeners */
191  send_library_notification(NULL);
192 }
193 
194 static struct corosync_lib_handler quorum_lib_service[] =
195 {
196  { /* 0 */
197  .lib_handler_fn = message_handler_req_lib_quorum_getquorate,
198  .flow_control = CS_LIB_FLOW_CONTROL_NOT_REQUIRED
199  },
200  { /* 1 */
201  .lib_handler_fn = message_handler_req_lib_quorum_trackstart,
202  .flow_control = CS_LIB_FLOW_CONTROL_NOT_REQUIRED
203  },
204  { /* 2 */
205  .lib_handler_fn = message_handler_req_lib_quorum_trackstop,
206  .flow_control = CS_LIB_FLOW_CONTROL_NOT_REQUIRED
207  },
208  { /* 3 */
209  .lib_handler_fn = message_handler_req_lib_quorum_gettype,
210  .flow_control = CS_LIB_FLOW_CONTROL_NOT_REQUIRED
211  },
212  { /* 4 */
213  .lib_handler_fn = message_handler_req_lib_quorum_model_gettype,
214  .flow_control = CS_LIB_FLOW_CONTROL_NOT_REQUIRED
215  }
216 };
217 
218 static struct corosync_service_engine quorum_service_handler = {
219  .name = "corosync cluster quorum service v0.1",
220  .id = QUORUM_SERVICE,
221  .priority = 1,
222  .private_data_size = sizeof (struct quorum_pd),
223  .flow_control = CS_LIB_FLOW_CONTROL_NOT_REQUIRED,
224  .allow_inquorate = CS_LIB_ALLOW_INQUORATE,
225  .lib_init_fn = quorum_lib_init_fn,
226  .lib_exit_fn = quorum_lib_exit_fn,
227  .lib_engine = quorum_lib_service,
228  .exec_init_fn = quorum_exec_init_fn,
229  .sync_init = quorum_sync_init,
230  .sync_process = quorum_sync_process,
231  .sync_activate = quorum_sync_activate,
232  .sync_abort = quorum_sync_abort,
233  .lib_engine_count = sizeof (quorum_lib_service) / sizeof (struct corosync_lib_handler)
234 };
235 
237 {
238  return (&quorum_service_handler);
239 }
240 
241 /* -------------------------------------------------- */
242 
243 
244 /*
245  * Internal API functions for corosync
246  */
247 
248 static int quorum_quorate(void)
249 {
250  return primary_designated;
251 }
252 
253 
254 static int quorum_register_callback(quorum_callback_fn_t function, void *context)
255 {
256  struct internal_callback_pd *pd = malloc(sizeof(struct internal_callback_pd));
257  if (!pd)
258  return -1;
259 
260  pd->context = context;
261  pd->callback = function;
262  qb_list_add (&pd->list, &internal_trackers_list);
263 
264  return 0;
265 }
266 
267 static int quorum_unregister_callback(quorum_callback_fn_t function, void *context)
268 {
269  struct internal_callback_pd *pd;
270  struct qb_list_head *tmp, *tmp_iter;
271 
272  qb_list_for_each_safe(tmp, tmp_iter, &internal_trackers_list) {
273  pd = qb_list_entry(tmp, struct internal_callback_pd, list);
274  if (pd->callback == function && pd->context == context) {
275  qb_list_del(&pd->list);
276  free(pd);
277  return 0;
278  }
279  }
280  return -1;
281 }
282 
283 static struct quorum_callin_functions callins = {
284  .quorate = quorum_quorate,
285  .register_callback = quorum_register_callback,
286  .unregister_callback = quorum_unregister_callback
287 };
288 
289 /* --------------------------------------------------------------------- */
290 
291 static void quorum_sync_init (
292  const unsigned int *trans_list,
293  size_t trans_list_entries,
294  const unsigned int *member_list,
295  size_t member_list_entries,
296  const struct memb_ring_id *ring_id)
297 {
298  int found;
299  int i, j;
300  int entries;
301  int node_joined;
302 
303  memcpy (my_member_list, member_list, member_list_entries *
304  sizeof (unsigned int));
305  my_member_list_entries = member_list_entries;
306 
307  last_sync_ring_id = *ring_id;
308 
309  /*
310  * Determine left list of nodeids
311  */
312  entries = 0;
313  for (i = 0; i < my_old_member_list_entries; i++) {
314  found = 0;
315  for (j = 0; j < trans_list_entries; j++) {
316  if (my_old_member_list[i] == trans_list[j]) {
317  found = 1;
318  break;
319  }
320  }
321 
322  if (found == 0) {
323  my_left_list[entries++] = my_old_member_list[i];
324  } else {
325  /*
326  * Check it is really in new membership
327  */
328  found = 0;
329 
330  for (j = 0; j < my_member_list_entries; j++) {
331  if (my_old_member_list[i] == my_member_list[j]) {
332  found = 1;
333  break;
334  }
335  }
336 
337  /*
338  * Node is in both old_member_list and trans list but not in my_member_list.
339  * (This shouldn't really happen).
340  */
341  if (!found) {
342  my_left_list[entries++] = my_old_member_list[i];
343  }
344  }
345  }
346  my_left_list_entries = entries;
347 
348  /*
349  * Determine joined list of nodeids
350  */
351  entries = 0;
352  for (i = 0; i < my_member_list_entries; i++) {
353  node_joined = 1;
354  for (j = 0; j < my_old_member_list_entries; j++) {
355  if (my_member_list[i] == my_old_member_list[j]) {
356  /*
357  * Node is in member list and also in my_old_member list -> check
358  * if it is in left_list.
359  */
360  node_joined = 0;
361  break;
362  }
363  }
364 
365  if (!node_joined) {
366  /*
367  * Check if node is in left list.
368  */
369  for (j = 0; j < my_left_list_entries; j++) {
370  if (my_member_list[i] == my_left_list[j]) {
371  /*
372  * Node is both in left and also in member list -> joined
373  */
374  node_joined = 1;
375  break;
376  }
377  }
378  }
379 
380  if (node_joined) {
381  my_joined_list[entries++] = my_member_list[i];
382  }
383  }
384  my_joined_list_entries = entries;
385 
386  log_view_list(my_member_list, my_member_list_entries, "Sync members");
387 
388  if (my_joined_list_entries > 0) {
389  log_view_list(my_joined_list, my_joined_list_entries, "Sync joined");
390  }
391 
392  if (my_left_list_entries > 0) {
393  log_view_list(my_left_list, my_left_list_entries, "Sync left");
394  }
395 }
396 
397 static int quorum_sync_process (void)
398 {
399 
400  return (0);
401 }
402 
403 static void quorum_sync_activate (void)
404 {
405 
406  memcpy (my_old_member_list, my_member_list,
407  my_member_list_entries * sizeof (unsigned int));
408  my_old_member_list_entries = my_member_list_entries;
409 
410  /* Tell IPC listeners */
411  send_nodelist_library_notification(NULL, 1);
412 }
413 
414 static void quorum_sync_abort (void)
415 {
416 
417 }
418 
419 static char *quorum_exec_init_fn (struct corosync_api_v1 *api)
420 {
421  char *quorum_module = NULL;
422  char *error;
423 
424  corosync_api = api;
425  qb_list_init (&lib_trackers_list);
426  qb_list_init (&internal_trackers_list);
427 
428  /*
429  * Tell corosync we have a quorum engine.
430  */
431  api->quorum_initialize(&callins);
432 
433  /*
434  * Look for a quorum provider
435  */
436  if (icmap_get_string("quorum.provider", &quorum_module) == CS_OK) {
438  "Using quorum provider %s", quorum_module);
439 
440  error = (char *)"Invalid quorum provider";
441 
442  if (strcmp (quorum_module, "corosync_votequorum") == 0) {
443  error = votequorum_init (api, quorum_api_set_quorum);
444  quorum_type = 1;
445  }
446  if (strcmp (quorum_module, "corosync_ykd") == 0) {
447  error = ykd_init (api, quorum_api_set_quorum);
448  quorum_type = 1;
449  }
450  if (error) {
452  "Quorum provider: %s failed to initialize.",
453  quorum_module);
454  free(quorum_module);
455  return (error);
456  }
457  }
458 
459  if (quorum_module) {
460  free(quorum_module);
461  quorum_module = NULL;
462  }
463 
464  /*
465  * setting quorum_type and primary_designated in the right order is important
466  * always try to lookup/init a quorum module, then revert back to be quorate
467  */
468 
469  if (quorum_type == 0) {
470  primary_designated = 1;
471  }
472 
473  return (NULL);
474 }
475 
476 static int quorum_lib_init_fn (void *conn)
477 {
478  struct quorum_pd *pd = (struct quorum_pd *)corosync_api->ipc_private_data_get (conn);
479 
480  log_printf(LOGSYS_LEVEL_DEBUG, "lib_init_fn: conn=%p", conn);
481 
482  qb_list_init (&pd->list);
483  pd->conn = conn;
485 
486  return (0);
487 }
488 
489 static int quorum_lib_exit_fn (void *conn)
490 {
491  struct quorum_pd *quorum_pd = (struct quorum_pd *)corosync_api->ipc_private_data_get (conn);
492 
493  log_printf(LOGSYS_LEVEL_DEBUG, "lib_exit_fn: conn=%p", conn);
494 
496  qb_list_del (&quorum_pd->list);
497  qb_list_init (&quorum_pd->list);
498  }
499  return (0);
500 }
501 
502 
503 static void send_internal_notification(void)
504 {
505  struct qb_list_head *tmp;
506  struct internal_callback_pd *pd;
507 
508  qb_list_for_each(tmp, &internal_trackers_list) {
509  pd = qb_list_entry(tmp, struct internal_callback_pd, list);
510 
511  pd->callback(primary_designated, pd->context);
512  }
513 }
514 
515 static void prepare_library_notification_v0(char *buf, size_t size)
516 {
518  int i;
519 
520  res_lib_quorum_notification->quorate = primary_designated;
522  res_lib_quorum_notification->view_list_entries = quorum_view_list_entries;
523  for (i=0; i<quorum_view_list_entries; i++) {
524  res_lib_quorum_notification->view_list[i] = quorum_view_list[i];
525  }
526 
528  res_lib_quorum_notification->header.size = size;
529  res_lib_quorum_notification->header.error = CS_OK;
530 }
531 
532 static void prepare_library_notification_v1(char *buf, size_t size)
533 {
536  int i;
537 
538  res_lib_quorum_v1_quorum_notification->quorate = primary_designated;
541  res_lib_quorum_v1_quorum_notification->view_list_entries = quorum_view_list_entries;
542  for (i=0; i<quorum_view_list_entries; i++) {
543  res_lib_quorum_v1_quorum_notification->view_list[i] = quorum_view_list[i];
544  }
545 
547  res_lib_quorum_v1_quorum_notification->header.size = size;
549 }
550 
551 static void send_library_notification(void *conn)
552 {
553  int size_v0 = sizeof(struct res_lib_quorum_notification) +
554  sizeof(mar_uint32_t) * quorum_view_list_entries;
555  int size_v1 = sizeof(struct res_lib_quorum_v1_quorum_notification) +
556  sizeof(mar_uint32_t)*quorum_view_list_entries;
557 
558  char buf_v0[size_v0];
559  char buf_v1[size_v1];
560 
562  (struct res_lib_quorum_notification *)buf_v0;
564  (struct res_lib_quorum_v1_quorum_notification *)buf_v1;
565 
566  struct quorum_pd *qpd;
567  struct qb_list_head *tmp;
568 
569  log_printf(LOGSYS_LEVEL_DEBUG, "sending quorum notification to %p, length = %u/%u", conn, size_v0, size_v1);
570 
571  prepare_library_notification_v0(buf_v0, size_v0);
572  prepare_library_notification_v1(buf_v1, size_v1);
573 
574  /* Send it to all interested parties */
575  if (conn) {
576  qpd = (struct quorum_pd *)corosync_api->ipc_private_data_get (conn);
577 
578  if (qpd->model == LIB_QUORUM_MODEL_V0) {
579  corosync_api->ipc_dispatch_send(conn, res_lib_quorum_notification, size_v0);
580  } else if (qpd->model == LIB_QUORUM_MODEL_V1) {
582  }
583  }
584  else {
585  qb_list_for_each(tmp, &lib_trackers_list) {
586  qpd = qb_list_entry(tmp, struct quorum_pd, list);
587 
588  if (qpd->model == LIB_QUORUM_MODEL_V0) {
589  corosync_api->ipc_dispatch_send(qpd->conn,
590  res_lib_quorum_notification, size_v0);
591  } else if (qpd->model == LIB_QUORUM_MODEL_V1) {
592  corosync_api->ipc_dispatch_send(qpd->conn,
594  }
595  }
596  }
597  return;
598 }
599 
600 static void send_nodelist_library_notification(void *conn, int send_joined_left_list)
601 {
602  int size = sizeof(struct res_lib_quorum_v1_nodelist_notification) +
603  sizeof(mar_uint32_t) * my_member_list_entries;
604  char *buf;
606  struct quorum_pd *qpd;
607  struct qb_list_head *tmp;
608  mar_uint32_t *ptr;
609  int i;
610 
611  if (send_joined_left_list) {
612  size += sizeof(mar_uint32_t) * my_joined_list_entries;
613  size += sizeof(mar_uint32_t) * my_left_list_entries;
614  }
615 
616  buf = alloca(size);
617  memset(buf, 0, size);
618 
620 
621  res_lib_quorum_v1_nodelist_notification->ring_id.nodeid = last_sync_ring_id.nodeid;
622  res_lib_quorum_v1_nodelist_notification->ring_id.seq = last_sync_ring_id.seq;
623  res_lib_quorum_v1_nodelist_notification->member_list_entries = my_member_list_entries;
624 
625  if (send_joined_left_list) {
626  res_lib_quorum_v1_nodelist_notification->joined_list_entries = my_joined_list_entries;
627  res_lib_quorum_v1_nodelist_notification->left_list_entries = my_left_list_entries;
628  }
629 
631 
632  for (i=0; i<my_member_list_entries; i++, ptr++) {
633  *ptr = my_member_list[i];
634  }
635 
636  if (send_joined_left_list) {
637  for (i=0; i<my_joined_list_entries; i++, ptr++) {
638  *ptr = my_joined_list[i];
639  }
640 
641  for (i=0; i<my_left_list_entries; i++, ptr++) {
642  *ptr = my_left_list[i];
643  }
644  }
645 
647  res_lib_quorum_v1_nodelist_notification->header.size = size;
649 
650  log_printf(LOGSYS_LEVEL_DEBUG, "sending nodelist notification to %p, length = %u", conn, size);
651 
652  /* Send it to all interested parties */
653  if (conn) {
654  qpd = (struct quorum_pd *)corosync_api->ipc_private_data_get (conn);
655 
656  if (qpd->model == LIB_QUORUM_MODEL_V1) {
658  }
659  }
660  else {
661  qb_list_for_each(tmp, &lib_trackers_list) {
662  qpd = qb_list_entry(tmp, struct quorum_pd, list);
663 
664  if (qpd->model == LIB_QUORUM_MODEL_V1) {
665  corosync_api->ipc_dispatch_send(qpd->conn,
667  }
668  }
669  }
670 
671  return;
672 }
673 
674 static void message_handler_req_lib_quorum_getquorate (void *conn,
675  const void *msg)
676 {
678 
679  log_printf(LOGSYS_LEVEL_DEBUG, "got quorate request on %p", conn);
680 
681  /* send status */
682  res_lib_quorum_getquorate.quorate = primary_designated;
685  res_lib_quorum_getquorate.header.error = CS_OK;
687 }
688 
689 static void message_handler_req_lib_quorum_trackstart (void *conn,
690  const void *msg)
691 {
693  struct qb_ipc_response_header res;
694  struct quorum_pd *quorum_pd = (struct quorum_pd *)corosync_api->ipc_private_data_get (conn);
695  cs_error_t error = CS_OK;
696 
697  log_printf(LOGSYS_LEVEL_DEBUG, "got trackstart request on %p", conn);
698 
699  /*
700  * If an immediate listing of the current cluster membership
701  * is requested, generate membership list
702  */
705  log_printf(LOGSYS_LEVEL_DEBUG, "sending initial status to %p", conn);
706  send_nodelist_library_notification(conn, 0);
707  send_library_notification(conn);
708  }
709 
711  error = CS_ERR_EXIST;
712  goto response_send;
713  }
714 
715  /*
716  * Record requests for tracking
717  */
720 
723 
724  qb_list_add (&quorum_pd->list, &lib_trackers_list);
725  }
726 
727 response_send:
728  /* send status */
729  res.size = sizeof(res);
731  res.error = error;
732  corosync_api->ipc_response_send(conn, &res, sizeof(struct qb_ipc_response_header));
733 }
734 
735 static void message_handler_req_lib_quorum_trackstop (void *conn, const void *msg)
736 {
737  struct qb_ipc_response_header res;
738  struct quorum_pd *quorum_pd = (struct quorum_pd *)corosync_api->ipc_private_data_get (conn);
739 
740  log_printf(LOGSYS_LEVEL_DEBUG, "got trackstop request on %p", conn);
741 
743  res.error = CS_OK;
745  qb_list_del (&quorum_pd->list);
746  qb_list_init (&quorum_pd->list);
747  } else {
748  res.error = CS_ERR_NOT_EXIST;
749  }
750 
751  /* send status */
752  res.size = sizeof(res);
754  res.error = CS_OK;
755  corosync_api->ipc_response_send(conn, &res, sizeof(struct qb_ipc_response_header));
756 }
757 
758 static void message_handler_req_lib_quorum_gettype (void *conn,
759  const void *msg)
760 {
762 
763  log_printf(LOGSYS_LEVEL_DEBUG, "got quorum_type request on %p", conn);
764 
765  /* send status */
767  res_lib_quorum_gettype.header.size = sizeof(res_lib_quorum_gettype);
769  res_lib_quorum_gettype.header.error = CS_OK;
770  corosync_api->ipc_response_send(conn, &res_lib_quorum_gettype, sizeof(res_lib_quorum_gettype));
771 }
772 
773 static void message_handler_req_lib_quorum_model_gettype (void *conn,
774  const void *msg)
775 {
778  struct quorum_pd *quorum_pd = (struct quorum_pd *)corosync_api->ipc_private_data_get (conn);
779  cs_error_t ret_err;
780 
781  log_printf(LOGSYS_LEVEL_DEBUG, "got quorum_model_type request on %p", conn);
782 
783  ret_err = CS_OK;
784 
787  log_printf(LOGSYS_LEVEL_ERROR, "quorum_model_type request for unsupported model %u",
789 
790  ret_err = CS_ERR_INVALID_PARAM;
791  } else {
793  }
794 
795  /* send status */
796  res_lib_quorum_model_gettype.quorum_type = quorum_type;
799  res_lib_quorum_model_gettype.header.error = ret_err;
801 }
@ CS_LIB_ALLOW_INQUORATE
Definition: coroapi.h:164
void(* quorum_callback_fn_t)(int quorate, void *context)
The quorum_callback_fn_t callback.
Definition: coroapi.h:199
@ CS_LIB_FLOW_CONTROL_NOT_REQUIRED
Definition: coroapi.h:153
#define PROCESSOR_COUNT_MAX
Definition: coroapi.h:96
@ QUORUM_SERVICE
Definition: corodefs.h:47
#define CS_TRACK_CURRENT
Definition: corotypes.h:91
#define CS_PRI_NODE_ID
Definition: corotypes.h:59
#define CS_TRACK_CHANGES
Definition: corotypes.h:92
#define CS_TRACK_CHANGES_ONLY
Definition: corotypes.h:93
cs_error_t
The cs_error_t enum.
Definition: corotypes.h:98
@ CS_OK
Definition: corotypes.h:99
@ CS_ERR_INVALID_PARAM
Definition: corotypes.h:105
@ CS_ERR_NOT_EXIST
Definition: corotypes.h:110
@ CS_ERR_EXIST
Definition: corotypes.h:112
char * votequorum_init(struct corosync_api_v1 *api, quorum_set_quorate_fn_t q_set_quorate_fn)
cs_error_t icmap_get_string(const char *key_name, char **str)
Shortcut for icmap_get for string type.
Definition: icmap.c:856
@ MESSAGE_RES_QUORUM_TRACKSTART
Definition: ipc_quorum.h:56
@ MESSAGE_RES_QUORUM_V1_QUORUM_NOTIFICATION
Definition: ipc_quorum.h:61
@ MESSAGE_RES_QUORUM_TRACKSTOP
Definition: ipc_quorum.h:57
@ MESSAGE_RES_QUORUM_V1_NODELIST_NOTIFICATION
Definition: ipc_quorum.h:62
@ MESSAGE_RES_QUORUM_GETTYPE
Definition: ipc_quorum.h:59
@ MESSAGE_RES_QUORUM_NOTIFICATION
Definition: ipc_quorum.h:58
@ MESSAGE_RES_QUORUM_MODEL_GETTYPE
Definition: ipc_quorum.h:60
@ MESSAGE_RES_QUORUM_GETQUORATE
Definition: ipc_quorum.h:55
lib_quorum_model
Definition: ipc_quorum.h:68
@ LIB_QUORUM_MODEL_V1
Definition: ipc_quorum.h:70
@ LIB_QUORUM_MODEL_V0
Definition: ipc_quorum.h:69
#define LOGSYS_LEVEL_ERROR
Definition: logsys.h:72
#define log_printf(level, format, args...)
Definition: logsys.h:323
#define LOGSYS_LEVEL_CRIT
Definition: logsys.h:71
#define LOGSYS_LEVEL_NOTICE
Definition: logsys.h:74
#define LOGSYS_LEVEL_DEBUG
Definition: logsys.h:76
uint32_t mar_uint32_t
Definition: mar_gen.h:53
The corosync_api_v1 struct.
Definition: coroapi.h:225
int(* quorum_initialize)(struct quorum_callin_functions *fns)
Definition: coroapi.h:392
int(* ipc_dispatch_send)(void *conn, const void *msg, size_t mlen)
Definition: coroapi.h:263
int(* ipc_response_send)(void *conn, const void *msg, size_t mlen)
Definition: coroapi.h:258
void *(* ipc_private_data_get)(void *conn)
Definition: coroapi.h:256
The corosync_lib_handler struct.
Definition: coroapi.h:467
void(* lib_handler_fn)(void *conn, const void *msg)
Definition: coroapi.h:468
The corosync_service_engine struct.
Definition: coroapi.h:490
const char * name
Definition: coroapi.h:491
struct qb_list_head list
Definition: vsf_quorum.c:84
quorum_callback_fn_t callback
Definition: vsf_quorum.c:85
The memb_ring_id struct.
Definition: coroapi.h:122
unsigned long long seq
Definition: coroapi.h:124
unsigned int nodeid
Definition: coroapi.h:123
The quorum_callin_functions struct.
Definition: coroapi.h:204
int(* quorate)(void)
Definition: coroapi.h:205
unsigned char track_flags
enum lib_quorum_model model
Definition: vsf_quorum.c:80
int tracking_enabled
struct qb_list_head list
The req_lib_quorum_trackstart struct.
Definition: ipc_quorum.h:81
unsigned int track_flags
Definition: ipc_quorum.h:83
The res_lib_quorum_getquorate struct.
Definition: ipc_quorum.h:89
The res_lib_quorum_gettype struct.
Definition: ipc_quorum.h:127
mar_uint32_t quorum_type
Definition: ipc_quorum.h:129
The res_lib_quorum_notification struct.
Definition: ipc_quorum.h:97
mar_uint32_t view_list[]
Definition: ipc_quorum.h:102
struct memb_ring_id ring_id
Definition: totemsrp.c:4
LOGSYS_DECLARE_SUBSYS("QUORUM")
struct corosync_service_engine * vsf_quorum_get_service_engine_ver0(void)
Definition: vsf_quorum.c:236
struct quorum_services_api_ver1 * quorum_iface
Definition: vsf_quorum.c:128
char * ykd_init(struct corosync_api_v1 *corosync_api, quorum_set_quorate_fn_t set_primary)
Definition: vsf_ykd.c:511