corosync  2.4.3
main.c
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1 /*
2  * Copyright (c) 2002-2006 MontaVista Software, Inc.
3  * Copyright (c) 2006-2012 Red Hat, Inc.
4  *
5  * All rights reserved.
6  *
7  * Author: Steven Dake (sdake@redhat.com)
8  *
9  * This software licensed under BSD license, the text of which follows:
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions are met:
13  *
14  * - Redistributions of source code must retain the above copyright notice,
15  * this list of conditions and the following disclaimer.
16  * - Redistributions in binary form must reproduce the above copyright notice,
17  * this list of conditions and the following disclaimer in the documentation
18  * and/or other materials provided with the distribution.
19  * - Neither the name of the MontaVista Software, Inc. nor the names of its
20  * contributors may be used to endorse or promote products derived from this
21  * software without specific prior written permission.
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
24  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
27  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
30  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
31  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
32  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
33  * THE POSSIBILITY OF SUCH DAMAGE.
34  */
35 
72 #include <config.h>
73 
74 #include <pthread.h>
75 #include <assert.h>
76 #include <sys/types.h>
77 #include <sys/file.h>
78 #include <sys/poll.h>
79 #include <sys/uio.h>
80 #include <sys/mman.h>
81 #include <sys/socket.h>
82 #include <sys/un.h>
83 #include <sys/time.h>
84 #include <sys/resource.h>
85 #include <sys/stat.h>
86 #include <netinet/in.h>
87 #include <arpa/inet.h>
88 #include <unistd.h>
89 #include <fcntl.h>
90 #include <stdlib.h>
91 #include <stdio.h>
92 #include <errno.h>
93 #include <signal.h>
94 #include <sched.h>
95 #include <time.h>
96 #include <semaphore.h>
97 #include <string.h>
98 
99 #ifdef HAVE_LIBSYSTEMD
100 #include <systemd/sd-daemon.h>
101 #endif
102 
103 #include <qb/qbdefs.h>
104 #include <qb/qblog.h>
105 #include <qb/qbloop.h>
106 #include <qb/qbutil.h>
107 #include <qb/qbipcs.h>
108 
109 #include <corosync/swab.h>
110 #include <corosync/corotypes.h>
111 #include <corosync/corodefs.h>
112 #include <corosync/list.h>
113 #include <corosync/totem/totempg.h>
114 #include <corosync/logsys.h>
115 #include <corosync/icmap.h>
116 
117 #ifdef HAVE_LIBCGROUP
118 #include <libcgroup.h>
119 #endif
120 
121 #include "quorum.h"
122 #include "totemsrp.h"
123 #include "logconfig.h"
124 #include "totemconfig.h"
125 #include "main.h"
126 #include "sync.h"
127 #include "timer.h"
128 #include "util.h"
129 #include "apidef.h"
130 #include "service.h"
131 #include "schedwrk.h"
132 
133 #ifdef HAVE_SMALL_MEMORY_FOOTPRINT
134 #define IPC_LOGSYS_SIZE 1024*64
135 #else
136 #define IPC_LOGSYS_SIZE 8192*128
137 #endif
138 
139 /*
140  * LibQB adds default "*" syslog filter so we have to set syslog_priority as low
141  * as possible so filters applied later in _logsys_config_apply_per_file takes
142  * effect.
143  */
144 LOGSYS_DECLARE_SYSTEM ("corosync",
146  LOG_DAEMON,
147  LOG_EMERG);
148 
149 LOGSYS_DECLARE_SUBSYS ("MAIN");
150 
151 #define SERVER_BACKLOG 5
152 
153 static int sched_priority = 0;
154 
155 static unsigned int service_count = 32;
156 
158 
159 static struct corosync_api_v1 *api = NULL;
160 
161 static int sync_in_process = 1;
162 
163 static qb_loop_t *corosync_poll_handle;
164 
165 struct sched_param global_sched_param;
166 
167 static corosync_timer_handle_t corosync_stats_timer_handle;
168 
169 static const char *corosync_lock_file = LOCALSTATEDIR"/run/corosync.pid";
170 
171 static int ip_version = AF_INET;
172 
173 qb_loop_t *cs_poll_handle_get (void)
174 {
175  return (corosync_poll_handle);
176 }
177 
178 int cs_poll_dispatch_add (qb_loop_t * handle,
179  int fd,
180  int events,
181  void *data,
182 
183  int (*dispatch_fn) (int fd,
184  int revents,
185  void *data))
186 {
187  return qb_loop_poll_add(handle, QB_LOOP_MED, fd, events, data,
188  dispatch_fn);
189 }
190 
191 int cs_poll_dispatch_delete(qb_loop_t * handle, int fd)
192 {
193  return qb_loop_poll_del(handle, fd);
194 }
195 
197 {
198  int i;
199 
200  for (i = 0; i < SERVICES_COUNT_MAX; i++) {
201  if (corosync_service[i] && corosync_service[i]->exec_dump_fn) {
203  }
204  }
205 }
206 
207 static void corosync_blackbox_write_to_file (void)
208 {
209  char fname[PATH_MAX];
210  char fdata_fname[PATH_MAX];
211  char time_str[PATH_MAX];
212  struct tm cur_time_tm;
213  time_t cur_time_t;
214  ssize_t res;
215 
216  cur_time_t = time(NULL);
217  localtime_r(&cur_time_t, &cur_time_tm);
218 
219  strftime(time_str, PATH_MAX, "%Y-%m-%dT%H:%M:%S", &cur_time_tm);
220  snprintf(fname, PATH_MAX, "%s/fdata-%s-%lld",
221  get_run_dir(),
222  time_str,
223  (long long int)getpid());
224 
225  if ((res = qb_log_blackbox_write_to_file(fname)) < 0) {
226  LOGSYS_PERROR(-res, LOGSYS_LEVEL_ERROR, "Can't store blackbox file");
227  }
228  snprintf(fdata_fname, sizeof(fdata_fname), "%s/fdata", get_run_dir());
229  unlink(fdata_fname);
230  if (symlink(fname, fdata_fname) == -1) {
231  log_printf(LOGSYS_LEVEL_ERROR, "Can't create symlink to '%s' for corosync blackbox file '%s'",
232  fname, fdata_fname);
233  }
234 }
235 
236 static void unlink_all_completed (void)
237 {
238  api->timer_delete (corosync_stats_timer_handle);
239  qb_loop_stop (corosync_poll_handle);
240  icmap_fini();
241 }
242 
244 {
245  corosync_service_unlink_all (api, unlink_all_completed);
246 }
247 
248 static int32_t sig_diag_handler (int num, void *data)
249 {
251  return 0;
252 }
253 
254 static int32_t sig_exit_handler (int num, void *data)
255 {
256  log_printf(LOGSYS_LEVEL_NOTICE, "Node was shut down by a signal");
257  corosync_service_unlink_all (api, unlink_all_completed);
258  return 0;
259 }
260 
261 static void sigsegv_handler (int num)
262 {
263  (void)signal (num, SIG_DFL);
264  corosync_blackbox_write_to_file ();
265  qb_log_fini();
266  raise (num);
267 }
268 
269 #define LOCALHOST_IP inet_addr("127.0.0.1")
270 
271 static void *corosync_group_handle;
272 
273 static struct totempg_group corosync_group = {
274  .group = "a",
275  .group_len = 1
276 };
277 
278 static void serialize_lock (void)
279 {
280 }
281 
282 static void serialize_unlock (void)
283 {
284 }
285 
286 static void corosync_sync_completed (void)
287 {
289  "Completed service synchronization, ready to provide service.");
290  sync_in_process = 0;
291 
292  cs_ipcs_sync_state_changed(sync_in_process);
294  /*
295  * Inform totem to start using new message queue again
296  */
298 
299 #ifdef HAVE_LIBSYSTEMD
300  sd_notify (0, "READY=1");
301 #endif
302 }
303 
304 static int corosync_sync_callbacks_retrieve (
305  int service_id,
306  struct sync_callbacks *callbacks)
307 {
308  if (corosync_service[service_id] == NULL) {
309  return (-1);
310  }
311 
312  if (callbacks == NULL) {
313  return (0);
314  }
315 
316  callbacks->name = corosync_service[service_id]->name;
317 
318  callbacks->sync_init = corosync_service[service_id]->sync_init;
319  callbacks->sync_process = corosync_service[service_id]->sync_process;
320  callbacks->sync_activate = corosync_service[service_id]->sync_activate;
321  callbacks->sync_abort = corosync_service[service_id]->sync_abort;
322  return (0);
323 }
324 
325 static struct memb_ring_id corosync_ring_id;
326 
327 static void member_object_joined (unsigned int nodeid)
328 {
329  char member_ip[ICMAP_KEYNAME_MAXLEN];
330  char member_join_count[ICMAP_KEYNAME_MAXLEN];
331  char member_status[ICMAP_KEYNAME_MAXLEN];
332 
333  snprintf(member_ip, ICMAP_KEYNAME_MAXLEN,
334  "runtime.totem.pg.mrp.srp.members.%u.ip", nodeid);
335  snprintf(member_join_count, ICMAP_KEYNAME_MAXLEN,
336  "runtime.totem.pg.mrp.srp.members.%u.join_count", nodeid);
337  snprintf(member_status, ICMAP_KEYNAME_MAXLEN,
338  "runtime.totem.pg.mrp.srp.members.%u.status", nodeid);
339 
340  if (icmap_get(member_ip, NULL, NULL, NULL) == CS_OK) {
341  icmap_inc(member_join_count);
342  icmap_set_string(member_status, "joined");
343  } else {
344  icmap_set_string(member_ip, (char*)api->totem_ifaces_print (nodeid));
345  icmap_set_uint32(member_join_count, 1);
346  icmap_set_string(member_status, "joined");
347  }
348 
350  "Member joined: %s", api->totem_ifaces_print (nodeid));
351 }
352 
353 static void member_object_left (unsigned int nodeid)
354 {
355  char member_status[ICMAP_KEYNAME_MAXLEN];
356 
357  snprintf(member_status, ICMAP_KEYNAME_MAXLEN,
358  "runtime.totem.pg.mrp.srp.members.%u.status", nodeid);
359  icmap_set_string(member_status, "left");
360 
362  "Member left: %s", api->totem_ifaces_print (nodeid));
363 }
364 
365 static void confchg_fn (
366  enum totem_configuration_type configuration_type,
367  const unsigned int *member_list, size_t member_list_entries,
368  const unsigned int *left_list, size_t left_list_entries,
369  const unsigned int *joined_list, size_t joined_list_entries,
370  const struct memb_ring_id *ring_id)
371 {
372  int i;
373  int abort_activate = 0;
374 
375  if (sync_in_process == 1) {
376  abort_activate = 1;
377  }
378  sync_in_process = 1;
379  cs_ipcs_sync_state_changed(sync_in_process);
380  memcpy (&corosync_ring_id, ring_id, sizeof (struct memb_ring_id));
381 
382  for (i = 0; i < left_list_entries; i++) {
383  member_object_left (left_list[i]);
384  }
385  for (i = 0; i < joined_list_entries; i++) {
386  member_object_joined (joined_list[i]);
387  }
388  /*
389  * Call configuration change for all services
390  */
391  for (i = 0; i < service_count; i++) {
392  if (corosync_service[i] && corosync_service[i]->confchg_fn) {
393  corosync_service[i]->confchg_fn (configuration_type,
394  member_list, member_list_entries,
395  left_list, left_list_entries,
396  joined_list, joined_list_entries, ring_id);
397  }
398  }
399 
400  if (abort_activate) {
401  sync_abort ();
402  }
403  if (configuration_type == TOTEM_CONFIGURATION_TRANSITIONAL) {
404  sync_save_transitional (member_list, member_list_entries, ring_id);
405  }
406  if (configuration_type == TOTEM_CONFIGURATION_REGULAR) {
407  sync_start (member_list, member_list_entries, ring_id);
408  }
409 }
410 
411 static void priv_drop (void)
412 {
413  return; /* TODO: we are still not dropping privs */
414 }
415 
416 static void corosync_tty_detach (void)
417 {
418  int devnull;
419 
420  /*
421  * Disconnect from TTY if this is not a debug run
422  */
423 
424  switch (fork ()) {
425  case -1:
427  break;
428  case 0:
429  /*
430  * child which is disconnected, run this process
431  */
432  break;
433  default:
434  exit (0);
435  break;
436  }
437 
438  /* Create new session */
439  (void)setsid();
440 
441  /*
442  * Map stdin/out/err to /dev/null.
443  */
444  devnull = open("/dev/null", O_RDWR);
445  if (devnull == -1) {
447  }
448 
449  if (dup2(devnull, 0) < 0 || dup2(devnull, 1) < 0
450  || dup2(devnull, 2) < 0) {
451  close(devnull);
453  }
454  close(devnull);
455 }
456 
457 static void corosync_mlockall (void)
458 {
459  int res;
460  struct rlimit rlimit;
461 
462  rlimit.rlim_cur = RLIM_INFINITY;
463  rlimit.rlim_max = RLIM_INFINITY;
464 
465 #ifndef RLIMIT_MEMLOCK
466 #define RLIMIT_MEMLOCK RLIMIT_VMEM
467 #endif
468 
469  res = setrlimit (RLIMIT_MEMLOCK, &rlimit);
470  if (res == -1) {
472  "Could not increase RLIMIT_MEMLOCK, not locking memory");
473  return;
474  }
475 
476  res = mlockall (MCL_CURRENT | MCL_FUTURE);
477  if (res == -1) {
479  "Could not lock memory of service to avoid page faults");
480  };
481 }
482 
483 
484 static void corosync_totem_stats_updater (void *data)
485 {
486  totempg_stats_t * stats;
487  uint32_t total_mtt_rx_token;
488  uint32_t total_backlog_calc;
489  uint32_t total_token_holdtime;
490  int t, prev, i;
491  int32_t token_count;
492  char key_name[ICMAP_KEYNAME_MAXLEN];
493  const char *cstr;
494 
495  stats = api->totem_get_stats();
496 
497  icmap_set_uint32("runtime.totem.pg.msg_reserved", stats->msg_reserved);
498  icmap_set_uint32("runtime.totem.pg.msg_queue_avail", stats->msg_queue_avail);
499  icmap_set_uint64("runtime.totem.pg.mrp.srp.orf_token_tx", stats->mrp->srp->orf_token_tx);
500  icmap_set_uint64("runtime.totem.pg.mrp.srp.orf_token_rx", stats->mrp->srp->orf_token_rx);
501  icmap_set_uint64("runtime.totem.pg.mrp.srp.memb_merge_detect_tx", stats->mrp->srp->memb_merge_detect_tx);
502  icmap_set_uint64("runtime.totem.pg.mrp.srp.memb_merge_detect_rx", stats->mrp->srp->memb_merge_detect_rx);
503  icmap_set_uint64("runtime.totem.pg.mrp.srp.memb_join_tx", stats->mrp->srp->memb_join_tx);
504  icmap_set_uint64("runtime.totem.pg.mrp.srp.memb_join_rx", stats->mrp->srp->memb_join_rx);
505  icmap_set_uint64("runtime.totem.pg.mrp.srp.mcast_tx", stats->mrp->srp->mcast_tx);
506  icmap_set_uint64("runtime.totem.pg.mrp.srp.mcast_retx", stats->mrp->srp->mcast_retx);
507  icmap_set_uint64("runtime.totem.pg.mrp.srp.mcast_rx", stats->mrp->srp->mcast_rx);
508  icmap_set_uint64("runtime.totem.pg.mrp.srp.memb_commit_token_tx", stats->mrp->srp->memb_commit_token_tx);
509  icmap_set_uint64("runtime.totem.pg.mrp.srp.memb_commit_token_rx", stats->mrp->srp->memb_commit_token_rx);
510  icmap_set_uint64("runtime.totem.pg.mrp.srp.token_hold_cancel_tx", stats->mrp->srp->token_hold_cancel_tx);
511  icmap_set_uint64("runtime.totem.pg.mrp.srp.token_hold_cancel_rx", stats->mrp->srp->token_hold_cancel_rx);
512  icmap_set_uint64("runtime.totem.pg.mrp.srp.operational_entered", stats->mrp->srp->operational_entered);
513  icmap_set_uint64("runtime.totem.pg.mrp.srp.operational_token_lost", stats->mrp->srp->operational_token_lost);
514  icmap_set_uint64("runtime.totem.pg.mrp.srp.gather_entered", stats->mrp->srp->gather_entered);
515  icmap_set_uint64("runtime.totem.pg.mrp.srp.gather_token_lost", stats->mrp->srp->gather_token_lost);
516  icmap_set_uint64("runtime.totem.pg.mrp.srp.commit_entered", stats->mrp->srp->commit_entered);
517  icmap_set_uint64("runtime.totem.pg.mrp.srp.commit_token_lost", stats->mrp->srp->commit_token_lost);
518  icmap_set_uint64("runtime.totem.pg.mrp.srp.recovery_entered", stats->mrp->srp->recovery_entered);
519  icmap_set_uint64("runtime.totem.pg.mrp.srp.recovery_token_lost", stats->mrp->srp->recovery_token_lost);
520  icmap_set_uint64("runtime.totem.pg.mrp.srp.consensus_timeouts", stats->mrp->srp->consensus_timeouts);
521  icmap_set_uint64("runtime.totem.pg.mrp.srp.rx_msg_dropped", stats->mrp->srp->rx_msg_dropped);
522  icmap_set_uint32("runtime.totem.pg.mrp.srp.continuous_gather", stats->mrp->srp->continuous_gather);
523  icmap_set_uint32("runtime.totem.pg.mrp.srp.continuous_sendmsg_failures",
525 
526  icmap_set_uint8("runtime.totem.pg.mrp.srp.firewall_enabled_or_nic_failure",
527  stats->mrp->srp->continuous_gather > MAX_NO_CONT_GATHER ? 1 : 0);
528 
529  if (stats->mrp->srp->continuous_gather > MAX_NO_CONT_GATHER ||
531  cstr = "";
532 
534  cstr = "number of multicast sendmsg failures is above threshold";
535  }
536 
537  if (stats->mrp->srp->continuous_gather > MAX_NO_CONT_GATHER) {
538  cstr = "totem is continuously in gather state";
539  }
540 
542  "Totem is unable to form a cluster because of an "
543  "operating system or network fault (reason: %s). The most common "
544  "cause of this message is that the local firewall is "
545  "configured improperly.", cstr);
546  icmap_set_uint8("runtime.totem.pg.mrp.srp.firewall_enabled_or_nic_failure", 1);
547  } else {
548  icmap_set_uint8("runtime.totem.pg.mrp.srp.firewall_enabled_or_nic_failure", 0);
549  }
550 
551  for (i = 0; i < stats->mrp->srp->rrp->interface_count; i++) {
552  snprintf(key_name, ICMAP_KEYNAME_MAXLEN, "runtime.totem.pg.mrp.rrp.%u.faulty", i);
553  icmap_set_uint8(key_name, stats->mrp->srp->rrp->faulty[i]);
554  }
555  total_mtt_rx_token = 0;
556  total_token_holdtime = 0;
557  total_backlog_calc = 0;
558  token_count = 0;
559  t = stats->mrp->srp->latest_token;
560  while (1) {
561  if (t == 0)
562  prev = TOTEM_TOKEN_STATS_MAX - 1;
563  else
564  prev = t - 1;
565  if (prev == stats->mrp->srp->earliest_token)
566  break;
567  /* if tx == 0, then dropped token (not ours) */
568  if (stats->mrp->srp->token[t].tx != 0 ||
569  (stats->mrp->srp->token[t].rx - stats->mrp->srp->token[prev].rx) > 0 ) {
570  total_mtt_rx_token += (stats->mrp->srp->token[t].rx - stats->mrp->srp->token[prev].rx);
571  total_token_holdtime += (stats->mrp->srp->token[t].tx - stats->mrp->srp->token[t].rx);
572  total_backlog_calc += stats->mrp->srp->token[t].backlog_calc;
573  token_count++;
574  }
575  t = prev;
576  }
577  if (token_count) {
578  icmap_set_uint32("runtime.totem.pg.mrp.srp.mtt_rx_token", (total_mtt_rx_token / token_count));
579  icmap_set_uint32("runtime.totem.pg.mrp.srp.avg_token_workload", (total_token_holdtime / token_count));
580  icmap_set_uint32("runtime.totem.pg.mrp.srp.avg_backlog_calc", (total_backlog_calc / token_count));
581  }
582 
584 
585  api->timer_add_duration (1500 * MILLI_2_NANO_SECONDS, NULL,
586  corosync_totem_stats_updater,
587  &corosync_stats_timer_handle);
588 }
589 
590 static void corosync_totem_stats_init (void)
591 {
592  icmap_set_uint32("runtime.totem.pg.mrp.srp.mtt_rx_token", 0);
593  icmap_set_uint32("runtime.totem.pg.mrp.srp.avg_token_workload", 0);
594  icmap_set_uint32("runtime.totem.pg.mrp.srp.avg_backlog_calc", 0);
595 
596  /* start stats timer */
597  api->timer_add_duration (1500 * MILLI_2_NANO_SECONDS, NULL,
598  corosync_totem_stats_updater,
599  &corosync_stats_timer_handle);
600 }
601 
602 static void deliver_fn (
603  unsigned int nodeid,
604  const void *msg,
605  unsigned int msg_len,
606  int endian_conversion_required)
607 {
608  const struct qb_ipc_request_header *header;
609  int32_t service;
610  int32_t fn_id;
611  uint32_t id;
612 
613  header = msg;
614  if (endian_conversion_required) {
615  id = swab32 (header->id);
616  } else {
617  id = header->id;
618  }
619 
620  /*
621  * Call the proper executive handler
622  */
623  service = id >> 16;
624  fn_id = id & 0xffff;
625 
626  if (!corosync_service[service]) {
627  return;
628  }
629  if (fn_id >= corosync_service[service]->exec_engine_count) {
630  log_printf(LOGSYS_LEVEL_WARNING, "discarded unknown message %d for service %d (max id %d)",
631  fn_id, service, corosync_service[service]->exec_engine_count);
632  return;
633  }
634 
635  icmap_fast_inc(service_stats_rx[service][fn_id]);
636 
637  if (endian_conversion_required) {
638  assert(corosync_service[service]->exec_engine[fn_id].exec_endian_convert_fn != NULL);
640  ((void *)msg);
641  }
642 
644  (msg, nodeid);
645 }
646 
648  const struct iovec *iovec,
649  unsigned int iov_len,
650  unsigned int guarantee)
651 {
652  const struct qb_ipc_request_header *req = iovec->iov_base;
653  int32_t service;
654  int32_t fn_id;
655 
656  service = req->id >> 16;
657  fn_id = req->id & 0xffff;
658 
659  if (corosync_service[service]) {
660  icmap_fast_inc(service_stats_tx[service][fn_id]);
661  }
662 
663  return (totempg_groups_mcast_joined (corosync_group_handle, iovec, iov_len, guarantee));
664 }
665 
666 static void corosync_ring_id_create_or_load (
667  struct memb_ring_id *memb_ring_id,
668  const struct totem_ip_address *addr)
669 {
670  int fd;
671  int res = 0;
672  char filename[PATH_MAX];
673 
674  snprintf (filename, sizeof(filename), "%s/ringid_%s",
675  get_run_dir(), totemip_print (addr));
676  fd = open (filename, O_RDONLY, 0700);
677  /*
678  * If file can be opened and read, read the ring id
679  */
680  if (fd != -1) {
681  res = read (fd, &memb_ring_id->seq, sizeof (uint64_t));
682  close (fd);
683  }
684  /*
685  * If file could not be opened or read, create a new ring id
686  */
687  if ((fd == -1) || (res != sizeof (uint64_t))) {
688  memb_ring_id->seq = 0;
689  umask(0);
690  fd = open (filename, O_CREAT|O_RDWR, 0700);
691  if (fd != -1) {
692  res = write (fd, &memb_ring_id->seq, sizeof (uint64_t));
693  close (fd);
694  if (res == -1) {
696  "Couldn't write ringid file '%s'", filename);
697 
699  }
700  } else {
702  "Couldn't create ringid file '%s'", filename);
703 
705  }
706  }
707 
708  totemip_copy(&memb_ring_id->rep, addr);
709  assert (!totemip_zero_check(&memb_ring_id->rep));
710 }
711 
712 static void corosync_ring_id_store (
713  const struct memb_ring_id *memb_ring_id,
714  const struct totem_ip_address *addr)
715 {
716  char filename[PATH_MAX];
717  int fd;
718  int res;
719 
720  snprintf (filename, sizeof(filename), "%s/ringid_%s",
721  get_run_dir(), totemip_print (addr));
722 
723  fd = open (filename, O_WRONLY, 0700);
724  if (fd == -1) {
725  fd = open (filename, O_CREAT|O_RDWR, 0700);
726  }
727  if (fd == -1) {
729  "Couldn't store new ring id %llx to stable storage",
730  memb_ring_id->seq);
731 
733  }
735  "Storing new sequence id for ring %llx", memb_ring_id->seq);
736  res = write (fd, &memb_ring_id->seq, sizeof(memb_ring_id->seq));
737  close (fd);
738  if (res != sizeof(memb_ring_id->seq)) {
740  "Couldn't store new ring id %llx to stable storage",
741  memb_ring_id->seq);
742 
744  }
745 }
746 
747 static qb_loop_timer_handle recheck_the_q_level_timer;
749 {
750  totempg_check_q_level(corosync_group_handle);
752  qb_loop_timer_add(cs_poll_handle_get(), QB_LOOP_MED, 1*QB_TIME_NS_IN_MSEC,
753  NULL, corosync_recheck_the_q_level, &recheck_the_q_level_timer);
754  }
755 }
756 
759 };
760 
761 
763  unsigned int service,
764  unsigned int id,
765  const void *msg,
766  void *sending_allowed_private_data)
767 {
769  (struct sending_allowed_private_data_struct *)sending_allowed_private_data;
770  struct iovec reserve_iovec;
771  struct qb_ipc_request_header *header = (struct qb_ipc_request_header *)msg;
772  int sending_allowed;
773 
774  reserve_iovec.iov_base = (char *)header;
775  reserve_iovec.iov_len = header->size;
776 
778  corosync_group_handle,
779  &reserve_iovec, 1);
780  if (pd->reserved_msgs == -1) {
781  return -EINVAL;
782  }
783 
784  sending_allowed = QB_FALSE;
785  if (corosync_quorum_is_quorate() == 1 ||
786  corosync_service[service]->allow_inquorate == CS_LIB_ALLOW_INQUORATE) {
787  // we are quorate
788  // now check flow control
789  if (corosync_service[service]->lib_engine[id].flow_control == CS_LIB_FLOW_CONTROL_NOT_REQUIRED) {
790  sending_allowed = QB_TRUE;
791  } else if (pd->reserved_msgs && sync_in_process == 0) {
792  sending_allowed = QB_TRUE;
793  } else if (pd->reserved_msgs == 0) {
794  return -ENOBUFS;
795  } else /* (sync_in_process) */ {
796  return -EINPROGRESS;
797  }
798  } else {
799  return -EHOSTUNREACH;
800  }
801 
802  return (sending_allowed);
803 }
804 
805 void corosync_sending_allowed_release (void *sending_allowed_private_data)
806 {
808  (struct sending_allowed_private_data_struct *)sending_allowed_private_data;
809 
810  if (pd->reserved_msgs == -1) {
811  return;
812  }
814 }
815 
817 {
818  int ret = 0;
819 
820  assert (source != NULL);
821  if (source->nodeid == totempg_my_nodeid_get ()) {
822  ret = 1;
823  }
824  return ret;
825 }
826 
828  mar_message_source_t *source,
829  void *conn)
830 {
831  assert ((source != NULL) && (conn != NULL));
832  memset (source, 0, sizeof (mar_message_source_t));
833  source->nodeid = totempg_my_nodeid_get ();
834  source->conn = conn;
835 }
836 
839  qb_loop_timer_handle handle;
840  unsigned long long tv_prev;
841  unsigned long long max_tv_diff;
842 };
843 
844 static void timer_function_scheduler_timeout (void *data)
845 {
846  struct scheduler_pause_timeout_data *timeout_data = (struct scheduler_pause_timeout_data *)data;
847  unsigned long long tv_current;
848  unsigned long long tv_diff;
849 
850  tv_current = qb_util_nano_current_get ();
851 
852  if (timeout_data->tv_prev == 0) {
853  /*
854  * Initial call -> just pretent everything is ok
855  */
856  timeout_data->tv_prev = tv_current;
857  timeout_data->max_tv_diff = 0;
858  }
859 
860  tv_diff = tv_current - timeout_data->tv_prev;
861  timeout_data->tv_prev = tv_current;
862 
863  if (tv_diff > timeout_data->max_tv_diff) {
864  log_printf (LOGSYS_LEVEL_WARNING, "Corosync main process was not scheduled for %0.4f ms "
865  "(threshold is %0.4f ms). Consider token timeout increase.",
866  (float)tv_diff / QB_TIME_NS_IN_MSEC, (float)timeout_data->max_tv_diff / QB_TIME_NS_IN_MSEC);
867  }
868 
869  /*
870  * Set next threshold, because token_timeout can change
871  */
872  timeout_data->max_tv_diff = timeout_data->totem_config->token_timeout * QB_TIME_NS_IN_MSEC * 0.8;
873  qb_loop_timer_add (corosync_poll_handle,
874  QB_LOOP_MED,
875  timeout_data->totem_config->token_timeout * QB_TIME_NS_IN_MSEC / 3,
876  timeout_data,
877  timer_function_scheduler_timeout,
878  &timeout_data->handle);
879 }
880 
881 
882 static int corosync_set_rr_scheduler (void)
883 {
884  int ret_val = 0;
885 
886 #if defined(HAVE_PTHREAD_SETSCHEDPARAM) && defined(HAVE_SCHED_GET_PRIORITY_MAX) && defined(HAVE_SCHED_SETSCHEDULER)
887  int res;
888 
889  sched_priority = sched_get_priority_max (SCHED_RR);
890  if (sched_priority != -1) {
891  global_sched_param.sched_priority = sched_priority;
892  res = sched_setscheduler (0, SCHED_RR, &global_sched_param);
893  if (res == -1) {
895  "Could not set SCHED_RR at priority %d",
896  global_sched_param.sched_priority);
897 
898  global_sched_param.sched_priority = 0;
899 #ifdef HAVE_QB_LOG_THREAD_PRIORITY_SET
900  qb_log_thread_priority_set (SCHED_OTHER, 0);
901 #endif
902  ret_val = -1;
903  } else {
904 
905  /*
906  * Turn on SCHED_RR in logsys system
907  */
908 #ifdef HAVE_QB_LOG_THREAD_PRIORITY_SET
909  res = qb_log_thread_priority_set (SCHED_RR, sched_priority);
910 #else
911  res = -1;
912 #endif
913  if (res == -1) {
915  "Could not set logsys thread priority."
916  " Can't continue because of priority inversions.");
918  }
919  }
920  } else {
922  "Could not get maximum scheduler priority");
923  sched_priority = 0;
924  ret_val = -1;
925  }
926 #else
928  "The Platform is missing process priority setting features. Leaving at default.");
929  ret_val = -1;
930 #endif
931 
932  return (ret_val);
933 }
934 
935 
936 /* The basename man page contains scary warnings about
937  thread-safety and portability, hence this */
938 static const char *corosync_basename(const char *file_name)
939 {
940  char *base;
941  base = strrchr (file_name, '/');
942  if (base) {
943  return base + 1;
944  }
945 
946  return file_name;
947 }
948 
949 static void
950 _logsys_log_printf(int level, int subsys,
951  const char *function_name,
952  const char *file_name,
953  int file_line,
954  const char *format,
955  ...) __attribute__((format(printf, 6, 7)));
956 
957 static void
958 _logsys_log_printf(int level, int subsys,
959  const char *function_name,
960  const char *file_name,
961  int file_line,
962  const char *format, ...)
963 {
964  va_list ap;
965 
966  va_start(ap, format);
967  qb_log_from_external_source_va(function_name, corosync_basename(file_name),
968  format, level, file_line,
969  subsys, ap);
970  va_end(ap);
971 }
972 
973 static void fplay_key_change_notify_fn (
974  int32_t event,
975  const char *key_name,
976  struct icmap_notify_value new_val,
977  struct icmap_notify_value old_val,
978  void *user_data)
979 {
980  if (strcmp(key_name, "runtime.blackbox.dump_flight_data") == 0) {
981  fprintf(stderr,"Writetofile\n");
982  corosync_blackbox_write_to_file ();
983  }
984  if (strcmp(key_name, "runtime.blackbox.dump_state") == 0) {
985  fprintf(stderr,"statefump\n");
987  }
988 }
989 
990 static void corosync_fplay_control_init (void)
991 {
992  icmap_track_t track = NULL;
993 
994  icmap_set_string("runtime.blackbox.dump_flight_data", "no");
995  icmap_set_string("runtime.blackbox.dump_state", "no");
996 
997  icmap_track_add("runtime.blackbox.dump_flight_data",
999  fplay_key_change_notify_fn,
1000  NULL, &track);
1001  icmap_track_add("runtime.blackbox.dump_state",
1003  fplay_key_change_notify_fn,
1004  NULL, &track);
1005 }
1006 
1007 /*
1008  * Set RO flag for keys, which ether doesn't make sense to change by user (statistic)
1009  * or which when changed are not reflected by runtime (totem.crypto_cipher, ...).
1010  *
1011  * Also some RO keys cannot be determined in this stage, so they are set later in
1012  * other functions (like nodelist.local_node_pos, ...)
1013  */
1014 static void set_icmap_ro_keys_flag (void)
1015 {
1016  /*
1017  * Set RO flag for all keys of internal configuration and runtime statistics
1018  */
1019  icmap_set_ro_access("internal_configuration.", CS_TRUE, CS_TRUE);
1020  icmap_set_ro_access("runtime.connections.", CS_TRUE, CS_TRUE);
1021  icmap_set_ro_access("runtime.totem.", CS_TRUE, CS_TRUE);
1022  icmap_set_ro_access("runtime.services.", CS_TRUE, CS_TRUE);
1023  icmap_set_ro_access("runtime.config.", CS_TRUE, CS_TRUE);
1024  icmap_set_ro_access("uidgid.config.", CS_TRUE, CS_TRUE);
1025 
1026  /*
1027  * Set RO flag for constrete keys of configuration which can't be changed
1028  * during runtime
1029  */
1030  icmap_set_ro_access("totem.crypto_cipher", CS_FALSE, CS_TRUE);
1031  icmap_set_ro_access("totem.crypto_hash", CS_FALSE, CS_TRUE);
1032  icmap_set_ro_access("totem.secauth", CS_FALSE, CS_TRUE);
1033  icmap_set_ro_access("totem.ip_version", CS_FALSE, CS_TRUE);
1034  icmap_set_ro_access("totem.rrp_mode", CS_FALSE, CS_TRUE);
1035  icmap_set_ro_access("totem.transport", CS_FALSE, CS_TRUE);
1036  icmap_set_ro_access("totem.cluster_name", CS_FALSE, CS_TRUE);
1037  icmap_set_ro_access("totem.netmtu", CS_FALSE, CS_TRUE);
1038  icmap_set_ro_access("totem.threads", CS_FALSE, CS_TRUE);
1039  icmap_set_ro_access("totem.version", CS_FALSE, CS_TRUE);
1040  icmap_set_ro_access("totem.nodeid", CS_FALSE, CS_TRUE);
1041  icmap_set_ro_access("totem.clear_node_high_bit", CS_FALSE, CS_TRUE);
1042  icmap_set_ro_access("qb.ipc_type", CS_FALSE, CS_TRUE);
1043  icmap_set_ro_access("config.reload_in_progress", CS_FALSE, CS_TRUE);
1044  icmap_set_ro_access("config.totemconfig_reload_in_progress", CS_FALSE, CS_TRUE);
1045 }
1046 
1047 static void main_service_ready (void)
1048 {
1049  int res;
1050 
1051  /*
1052  * This must occur after totempg is initialized because "this_ip" must be set
1053  */
1055  if (res == -1) {
1056  log_printf (LOGSYS_LEVEL_ERROR, "Could not initialize default services");
1058  }
1059  cs_ipcs_init();
1060  corosync_totem_stats_init ();
1061  corosync_fplay_control_init ();
1062  sync_init (
1063  corosync_sync_callbacks_retrieve,
1064  corosync_sync_completed);
1065 }
1066 
1067 static enum e_corosync_done corosync_flock (const char *lockfile, pid_t pid)
1068 {
1069  struct flock lock;
1070  enum e_corosync_done err;
1071  char pid_s[17];
1072  int fd_flag;
1073  int lf;
1074 
1075  err = COROSYNC_DONE_EXIT;
1076 
1077  lf = open (lockfile, O_WRONLY | O_CREAT, 0640);
1078  if (lf == -1) {
1079  log_printf (LOGSYS_LEVEL_ERROR, "Corosync Executive couldn't create lock file.");
1080  return (COROSYNC_DONE_AQUIRE_LOCK);
1081  }
1082 
1083 retry_fcntl:
1084  lock.l_type = F_WRLCK;
1085  lock.l_start = 0;
1086  lock.l_whence = SEEK_SET;
1087  lock.l_len = 0;
1088  if (fcntl (lf, F_SETLK, &lock) == -1) {
1089  switch (errno) {
1090  case EINTR:
1091  goto retry_fcntl;
1092  break;
1093  case EAGAIN:
1094  case EACCES:
1095  log_printf (LOGSYS_LEVEL_ERROR, "Another Corosync instance is already running.");
1097  goto error_close;
1098  break;
1099  default:
1100  log_printf (LOGSYS_LEVEL_ERROR, "Corosync Executive couldn't acquire lock. Error was %s",
1101  strerror(errno));
1103  goto error_close;
1104  break;
1105  }
1106  }
1107 
1108  if (ftruncate (lf, 0) == -1) {
1109  log_printf (LOGSYS_LEVEL_ERROR, "Corosync Executive couldn't truncate lock file. Error was %s",
1110  strerror (errno));
1112  goto error_close_unlink;
1113  }
1114 
1115  memset (pid_s, 0, sizeof (pid_s));
1116  snprintf (pid_s, sizeof (pid_s) - 1, "%u\n", pid);
1117 
1118 retry_write:
1119  if (write (lf, pid_s, strlen (pid_s)) != strlen (pid_s)) {
1120  if (errno == EINTR) {
1121  goto retry_write;
1122  } else {
1123  log_printf (LOGSYS_LEVEL_ERROR, "Corosync Executive couldn't write pid to lock file. "
1124  "Error was %s", strerror (errno));
1126  goto error_close_unlink;
1127  }
1128  }
1129 
1130  if ((fd_flag = fcntl (lf, F_GETFD, 0)) == -1) {
1131  log_printf (LOGSYS_LEVEL_ERROR, "Corosync Executive couldn't get close-on-exec flag from lock file. "
1132  "Error was %s", strerror (errno));
1134  goto error_close_unlink;
1135  }
1136  fd_flag |= FD_CLOEXEC;
1137  if (fcntl (lf, F_SETFD, fd_flag) == -1) {
1138  log_printf (LOGSYS_LEVEL_ERROR, "Corosync Executive couldn't set close-on-exec flag to lock file. "
1139  "Error was %s", strerror (errno));
1141  goto error_close_unlink;
1142  }
1143 
1144  return (err);
1145 
1146 error_close_unlink:
1147  unlink (lockfile);
1148 error_close:
1149  close (lf);
1150 
1151  return (err);
1152 }
1153 
1154 static int corosync_move_to_root_cgroup(void) {
1155  int res = -1;
1156 #ifdef HAVE_LIBCGROUP
1157  int cg_ret;
1158  struct cgroup *root_cgroup = NULL;
1159  struct cgroup_controller *root_cpu_cgroup_controller = NULL;
1160  char *current_cgroup_path = NULL;
1161 
1162  cg_ret = cgroup_init();
1163  if (cg_ret) {
1164  log_printf(LOGSYS_LEVEL_WARNING, "Unable to initialize libcgroup: %s ",
1165  cgroup_strerror(cg_ret));
1166 
1167  goto exit_res;
1168  }
1169 
1170  cg_ret = cgroup_get_current_controller_path(getpid(), "cpu", &current_cgroup_path);
1171  if (cg_ret) {
1172  log_printf(LOGSYS_LEVEL_WARNING, "Unable to get current cpu cgroup path: %s ",
1173  cgroup_strerror(cg_ret));
1174 
1175  goto exit_res;
1176  }
1177 
1178  if (strcmp(current_cgroup_path, "/") == 0) {
1179  log_printf(LOGSYS_LEVEL_DEBUG, "Corosync is already in root cgroup path");
1180 
1181  res = 0;
1182  goto exit_res;
1183  }
1184 
1185  root_cgroup = cgroup_new_cgroup("/");
1186  if (root_cgroup == NULL) {
1187  log_printf(LOGSYS_LEVEL_WARNING, "Can't create root cgroup");
1188 
1189  goto exit_res;
1190  }
1191 
1192  root_cpu_cgroup_controller = cgroup_add_controller(root_cgroup, "cpu");
1193  if (root_cpu_cgroup_controller == NULL) {
1194  log_printf(LOGSYS_LEVEL_WARNING, "Can't create root cgroup cpu controller");
1195 
1196  goto exit_res;
1197  }
1198 
1199  cg_ret = cgroup_attach_task(root_cgroup);
1200  if (cg_ret) {
1201  log_printf(LOGSYS_LEVEL_WARNING, "Can't attach task to root cgroup: %s ",
1202  cgroup_strerror(cg_ret));
1203 
1204  goto exit_res;
1205  }
1206 
1207  cg_ret = cgroup_get_current_controller_path(getpid(), "cpu", &current_cgroup_path);
1208  if (cg_ret) {
1209  log_printf(LOGSYS_LEVEL_WARNING, "Unable to get current cpu cgroup path: %s ",
1210  cgroup_strerror(cg_ret));
1211 
1212  goto exit_res;
1213  }
1214 
1215  if (strcmp(current_cgroup_path, "/") == 0) {
1216  log_printf(LOGSYS_LEVEL_NOTICE, "Corosync sucesfully moved to root cgroup");
1217  res = 0;
1218  } else {
1219  log_printf(LOGSYS_LEVEL_WARNING, "Can't move Corosync to root cgroup");
1220  }
1221 
1222 exit_res:
1223  if (root_cgroup != NULL) {
1224  cgroup_free(&root_cgroup);
1225  }
1226 
1227  /*
1228  * libcgroup doesn't define something like cgroup_fini so there is no way how to clean
1229  * it's cache. It has to be called when libcgroup authors decide to implement it.
1230  */
1231 
1232 #endif
1233  return (res);
1234 }
1235 
1236 
1237 int main (int argc, char **argv, char **envp)
1238 {
1239  const char *error_string;
1240  struct totem_config totem_config;
1241  int res, ch;
1242  int background, sched_rr, prio, testonly, move_to_root_cgroup;
1243  struct stat stat_out;
1244  enum e_corosync_done flock_err;
1245  uint64_t totem_config_warnings;
1246  struct scheduler_pause_timeout_data scheduler_pause_timeout_data;
1247  long int tmpli;
1248  char *ep;
1249 
1250  /* default configuration
1251  */
1252  background = 1;
1253  sched_rr = 1;
1254  prio = 0;
1255  testonly = 0;
1256  move_to_root_cgroup = 1;
1257 
1258  while ((ch = getopt (argc, argv, "fP:pRrtv")) != EOF) {
1259 
1260  switch (ch) {
1261  case 'f':
1262  background = 0;
1263  break;
1264  case 'p':
1265  sched_rr = 0;
1266  break;
1267  case 'P':
1268  if (strcmp(optarg, "max") == 0) {
1269  prio = INT_MIN;
1270  } else if (strcmp(optarg, "min") == 0) {
1271  prio = INT_MAX;
1272  } else {
1273  tmpli = strtol(optarg, &ep, 10);
1274  if (errno != 0 || *ep != '\0' || tmpli > INT_MAX || tmpli < INT_MIN) {
1275  fprintf(stderr, "Priority value %s is invalid", optarg);
1277  return EXIT_FAILURE;
1278  }
1279 
1280  prio = tmpli;
1281  }
1282  break;
1283  case 'R':
1284  move_to_root_cgroup = 0;
1285  break;
1286  case 'r':
1287  sched_rr = 1;
1288  break;
1289  case 't':
1290  testonly = 1;
1291  break;
1292  case 'v':
1293  printf ("Corosync Cluster Engine, version '%s'\n", VERSION);
1294  printf ("Copyright (c) 2006-2009 Red Hat, Inc.\n");
1296  return EXIT_SUCCESS;
1297 
1298  break;
1299  default:
1300  fprintf(stderr, \
1301  "usage:\n"\
1302  " -f : Start application in foreground.\n"\
1303  " -p : Do not set realtime scheduling.\n"\
1304  " -r : Set round robin realtime scheduling (default).\n"\
1305  " -R : Do not try move corosync to root cpu cgroup (valid when built with libcgroup)\n" \
1306  " -P num : Set priority of process (no effect when -r is used)\n"\
1307  " -t : Test configuration and exit.\n"\
1308  " -v : Display version and SVN revision of Corosync and exit.\n");
1310  return EXIT_FAILURE;
1311  }
1312  }
1313 
1314 
1315  /*
1316  * Other signals are registered later via qb_loop_signal_add
1317  */
1318  (void)signal (SIGSEGV, sigsegv_handler);
1319  (void)signal (SIGABRT, sigsegv_handler);
1320 #if MSG_NOSIGNAL != 0
1321  (void)signal (SIGPIPE, SIG_IGN);
1322 #endif
1323 
1324  if (icmap_init() != CS_OK) {
1325  log_printf (LOGSYS_LEVEL_ERROR, "Corosync Executive couldn't initialize configuration component.");
1327  }
1328  set_icmap_ro_keys_flag();
1329 
1330  /*
1331  * Initialize the corosync_api_v1 definition
1332  */
1333  api = apidef_get ();
1334 
1335  res = coroparse_configparse(icmap_get_global_map(), &error_string);
1336  if (res == -1) {
1337  /*
1338  * Logsys can't log properly at this early stage, and we need to get this message out
1339  *
1340  */
1341  fprintf (stderr, "%s\n", error_string);
1342  syslog (LOGSYS_LEVEL_ERROR, "%s", error_string);
1344  }
1345 
1346  res = corosync_log_config_read (&error_string);
1347  if (res == -1) {
1348  /*
1349  * if we are here, we _must_ flush the logsys queue
1350  * and try to inform that we couldn't read the config.
1351  * this is a desperate attempt before certain death
1352  * and there is no guarantee that we can print to stderr
1353  * nor that logsys is sending the messages where we expect.
1354  */
1355  log_printf (LOGSYS_LEVEL_ERROR, "%s", error_string);
1356  fprintf(stderr, "%s", error_string);
1357  syslog (LOGSYS_LEVEL_ERROR, "%s", error_string);
1359  }
1360 
1361  if (!testonly) {
1362  log_printf (LOGSYS_LEVEL_NOTICE, "Corosync Cluster Engine ('%s'): started and ready to provide service.", VERSION);
1363  log_printf (LOGSYS_LEVEL_INFO, "Corosync built-in features:" PACKAGE_FEATURES "");
1364  }
1365 
1366  /*
1367  * Make sure required directory is present
1368  */
1369  res = stat (get_run_dir(), &stat_out);
1370  if ((res == -1) || (res == 0 && !S_ISDIR(stat_out.st_mode))) {
1371  log_printf (LOGSYS_LEVEL_ERROR, "Required directory not present %s. Please create it.", get_run_dir());
1373  }
1374 
1375  res = chdir(get_run_dir());
1376  if (res == -1) {
1377  log_printf (LOGSYS_LEVEL_ERROR, "Cannot chdir to run directory %s. "
1378  "Please make sure it has correct context and rights.", get_run_dir());
1380  }
1381 
1382  res = totem_config_read (&totem_config, &error_string, &totem_config_warnings);
1383  if (res == -1) {
1384  log_printf (LOGSYS_LEVEL_ERROR, "%s", error_string);
1386  }
1387 
1388  if (totem_config_warnings & TOTEM_CONFIG_WARNING_MEMBERS_IGNORED) {
1389  log_printf (LOGSYS_LEVEL_WARNING, "member section is used together with nodelist. Members ignored.");
1390  }
1391 
1392  if (totem_config_warnings & TOTEM_CONFIG_WARNING_MEMBERS_DEPRECATED) {
1393  log_printf (LOGSYS_LEVEL_WARNING, "member section is deprecated.");
1394  }
1395 
1396  if (totem_config_warnings & TOTEM_CONFIG_WARNING_TOTEM_NODEID_IGNORED) {
1397  log_printf (LOGSYS_LEVEL_WARNING, "nodeid appears both in totem section and nodelist. Nodelist one is used.");
1398  }
1399 
1400  if (totem_config_warnings & TOTEM_CONFIG_BINDNETADDR_NODELIST_SET) {
1401  log_printf (LOGSYS_LEVEL_WARNING, "interface section bindnetaddr is used together with nodelist. "
1402  "Nodelist one is going to be used.");
1403  }
1404 
1405  if (totem_config_warnings != 0) {
1406  log_printf (LOGSYS_LEVEL_WARNING, "Please migrate config file to nodelist.");
1407  }
1408 
1409  res = totem_config_keyread (&totem_config, &error_string);
1410  if (res == -1) {
1411  log_printf (LOGSYS_LEVEL_ERROR, "%s", error_string);
1413  }
1414 
1415  res = totem_config_validate (&totem_config, &error_string);
1416  if (res == -1) {
1417  log_printf (LOGSYS_LEVEL_ERROR, "%s", error_string);
1419  }
1420 
1421  if (testonly) {
1423  }
1424 
1425 
1426  /*
1427  * Try to move corosync into root cpu cgroup. Failure is not fatal and
1428  * error is deliberately ignored.
1429  */
1430  if (move_to_root_cgroup) {
1431  (void)corosync_move_to_root_cgroup();
1432  }
1433 
1434  /*
1435  * Set round robin realtime scheduling with priority 99
1436  */
1437  if (sched_rr) {
1438  if (corosync_set_rr_scheduler () != 0) {
1439  prio = INT_MIN;
1440  } else {
1441  prio = 0;
1442  }
1443  }
1444 
1445  if (prio != 0) {
1446  if (setpriority(PRIO_PGRP, 0, prio) != 0) {
1448  "Could not set priority %d", prio);
1449  }
1450  }
1451 
1452  ip_version = totem_config.ip_version;
1453 
1454  totem_config.totem_memb_ring_id_create_or_load = corosync_ring_id_create_or_load;
1455  totem_config.totem_memb_ring_id_store = corosync_ring_id_store;
1456 
1458  totem_config.totem_logging_configuration.log_subsys_id = _logsys_subsys_create("TOTEM", "totem,"
1459  "totemmrp.c,totemrrp.c,totemip.c,totemconfig.c,totemcrypto.c,totemsrp.c,"
1460  "totempg.c,totemiba.c,totemudp.c,totemudpu.c,totemnet.c");
1461 
1468  totem_config.totem_logging_configuration.log_printf = _logsys_log_printf;
1470 
1471  /*
1472  * Now we are fully initialized.
1473  */
1474  if (background) {
1475  corosync_tty_detach ();
1476  }
1477 
1478  /*
1479  * Lock all memory to avoid page faults which may interrupt
1480  * application healthchecking
1481  */
1482  corosync_mlockall ();
1483 
1484  corosync_poll_handle = qb_loop_create ();
1485 
1486  memset(&scheduler_pause_timeout_data, 0, sizeof(scheduler_pause_timeout_data));
1487  scheduler_pause_timeout_data.totem_config = &totem_config;
1488  timer_function_scheduler_timeout (&scheduler_pause_timeout_data);
1489 
1490  qb_loop_signal_add(corosync_poll_handle, QB_LOOP_LOW,
1491  SIGUSR2, NULL, sig_diag_handler, NULL);
1492  qb_loop_signal_add(corosync_poll_handle, QB_LOOP_HIGH,
1493  SIGINT, NULL, sig_exit_handler, NULL);
1494  qb_loop_signal_add(corosync_poll_handle, QB_LOOP_HIGH,
1495  SIGQUIT, NULL, sig_exit_handler, NULL);
1496  qb_loop_signal_add(corosync_poll_handle, QB_LOOP_HIGH,
1497  SIGTERM, NULL, sig_exit_handler, NULL);
1498 
1499  if (logsys_thread_start() != 0) {
1500  log_printf (LOGSYS_LEVEL_ERROR, "Can't initialize log thread");
1502  }
1503 
1504  if ((flock_err = corosync_flock (corosync_lock_file, getpid ())) != COROSYNC_DONE_EXIT) {
1505  corosync_exit_error (flock_err);
1506  }
1507 
1508  /*
1509  * if totempg_initialize doesn't have root priveleges, it cannot
1510  * bind to a specific interface. This only matters if
1511  * there is more then one interface in a system, so
1512  * in this case, only a warning is printed
1513  */
1514  /*
1515  * Join multicast group and setup delivery
1516  * and configuration change functions
1517  */
1518  if (totempg_initialize (
1519  corosync_poll_handle,
1520  &totem_config) != 0) {
1521 
1522  log_printf (LOGSYS_LEVEL_ERROR, "Can't initialize TOTEM layer");
1524  }
1525 
1527  main_service_ready);
1528 
1530  &corosync_group_handle,
1531  deliver_fn,
1532  confchg_fn);
1533 
1535  corosync_group_handle,
1536  &corosync_group,
1537  1);
1538 
1539  /*
1540  * Drop root privleges to user 'corosync'
1541  * TODO: Don't really need full root capabilities;
1542  * needed capabilities are:
1543  * CAP_NET_RAW (bindtodevice)
1544  * CAP_SYS_NICE (setscheduler)
1545  * CAP_IPC_LOCK (mlockall)
1546  */
1547  priv_drop ();
1548 
1549  schedwrk_init (
1550  serialize_lock,
1551  serialize_unlock);
1552 
1553  /*
1554  * Start main processing loop
1555  */
1556  qb_loop_run (corosync_poll_handle);
1557 
1558  /*
1559  * Exit was requested
1560  */
1561  totempg_finalize ();
1562 
1563  /*
1564  * free the loop resources
1565  */
1566  qb_loop_destroy (corosync_poll_handle);
1567 
1568  /*
1569  * free up the icmap
1570  */
1571 
1572  /*
1573  * Remove pid lock file
1574  */
1575  unlink (corosync_lock_file);
1576 
1578 
1579  return EXIT_SUCCESS;
1580 }
#define CS_TRUE
Definition: corotypes.h:54
const char * name
Definition: coroapi.h:492
int32_t cs_ipcs_q_level_get(void)
Definition: ipc_glue.c:690
unsigned int corosync_service_defaults_link_and_init(struct corosync_api_v1 *corosync_api)
Load all of the default services.
Definition: service.c:339
uint64_t gather_entered
Definition: totem.h:263
const char * get_run_dir(void)
Definition: util.c:174
int corosync_quorum_is_quorate(void)
Definition: exec/quorum.c:65
void(* timer_delete)(corosync_timer_handle_t timer_handle)
Definition: coroapi.h:241
void totempg_finalize(void)
Definition: totempg.c:838
Totem Single Ring Protocol.
int(* timer_add_duration)(unsigned long long nanoseconds_in_future, void *data, void(*timer_nf)(void *data), corosync_timer_handle_t *handle)
Definition: coroapi.h:229
uint64_t memb_commit_token_rx
Definition: totem.h:258
#define LOGSYS_LEVEL_INFO
Definition: logsys.h:73
#define LOGSYS_LEVEL_TRACE
Definition: logsys.h:75
void totempg_trans_ack(void)
Definition: totempg.c:1533
struct totem_config * totem_config
Definition: main.c:838
void *(* totem_get_stats)(void)
Definition: coroapi.h:436
#define PACKAGE_FEATURES
Definition: config.h:370
#define CS_FALSE
Definition: corotypes.h:53
void sync_start(const unsigned int *member_list, size_t member_list_entries, const struct memb_ring_id *ring_id)
Definition: sync.c:569
uint64_t memb_join_tx
Definition: totem.h:252
qb_loop_timer_handle handle
Definition: main.c:839
void sync_abort(void)
Definition: sync.c:598
void(* exec_dump_fn)(void)
Definition: coroapi.h:502
The totem_ip_address struct.
Definition: coroapi.h:111
void(* sync_abort)(void)
Definition: sync.h:47
totemsrp_token_stats_t token[TOTEM_TOKEN_STATS_MAX]
Definition: totem.h:277
const char * totemip_print(const struct totem_ip_address *addr)
Definition: totemip.c:214
Totem Single Ring Protocol.
void(* sync_init)(const unsigned int *trans_list, size_t trans_list_entries, const unsigned int *member_list, size_t member_list_entries, const struct memb_ring_id *ring_id)
Definition: sync.h:39
int sync_init(int(*sync_callbacks_retrieve)(int service_id, struct sync_callbacks *callbacks), void(*synchronization_completed)(void))
Definition: sync.c:171
void(* sync_init)(const unsigned int *trans_list, size_t trans_list_entries, const unsigned int *member_list, size_t member_list_entries, const struct memb_ring_id *ring_id)
Definition: coroapi.h:516
uint64_t mcast_rx
Definition: totem.h:256
int coroparse_configparse(icmap_map_t config_map, const char **error_string)
Definition: coroparse.c:251
qb_loop_t * cs_poll_handle_get(void)
Definition: main.c:173
void corosync_recheck_the_q_level(void *data)
Definition: main.c:748
#define corosync_exit_error(err)
Definition: exec/util.h:70
int totempg_groups_joined_release(int msg_count)
Definition: totempg.c:1327
#define VERSION
Definition: config.h:436
totem_configuration_type
The totem_configuration_type enum.
Definition: coroapi.h:132
#define LOCALSTATEDIR
Definition: config.h:355
struct message_header header
Definition: totemsrp.c:60
uint64_t memb_merge_detect_rx
Definition: totem.h:251
LOGSYS_DECLARE_SUBSYS("MAIN")
int guarantee
Definition: totemsrp.c:66
unsigned char addr[TOTEMIP_ADDRLEN]
Definition: coroapi.h:77
void(* sync_activate)(void)
Definition: coroapi.h:523
void schedwrk_init(void(*serialize_lock_fn)(void), void(*serialize_unlock_fn)(void))
Definition: schedwrk.c:83
cs_error_t icmap_set_string(const char *key_name, const char *value)
Definition: icmap.c:641
int earliest_token
Definition: totem.h:274
void(* confchg_fn)(enum totem_configuration_type configuration_type, const unsigned int *member_list, size_t member_list_entries, const unsigned int *left_list, size_t left_list_entries, const unsigned int *joined_list, size_t joined_list_entries, const struct memb_ring_id *ring_id)
Definition: coroapi.h:510
uint64_t orf_token_tx
Definition: totem.h:248
int cs_poll_dispatch_add(qb_loop_t *handle, int fd, int events, void *data, int(*dispatch_fn)(int fd, int revents, void *data))
Definition: main.c:178
int totempg_groups_initialize(void **instance, void(*deliver_fn)(unsigned int nodeid, const void *msg, unsigned int msg_len, int endian_conversion_required), void(*confchg_fn)(enum totem_configuration_type configuration_type, const unsigned int *member_list, size_t member_list_entries, const unsigned int *left_list, size_t left_list_entries, const unsigned int *joined_list, size_t joined_list_entries, const struct memb_ring_id *ring_id))
Initialize a groups instance.
Definition: totempg.c:1115
uint64_t gather_token_lost
Definition: totem.h:264
#define RLIMIT_MEMLOCK
void totemip_copy(struct totem_ip_address *addr1, const struct totem_ip_address *addr2)
Definition: totemip.c:95
icmap_map_t icmap_get_global_map(void)
Return global icmap.
Definition: icmap.c:278
unsigned long long max_tv_diff
Definition: main.c:841
struct corosync_service_engine * corosync_service[SERVICES_COUNT_MAX]
Definition: service.c:110
int _logsys_subsys_create(const char *subsys, const char *filename)
_logsys_subsys_create
Definition: logsys.c:436
uint64_t memb_commit_token_tx
Definition: totem.h:257
#define LOGSYS_PERROR(err_num, level, fmt, args...)
The LOGSYS_PERROR macro.
Definition: logsys.h:313
cs_error_t icmap_inc(const char *key_name)
Increase stored value by one.
Definition: icmap.c:1057
#define log_printf(level, format, args...)
Definition: logsys.h:319
#define MAX_NO_CONT_SENDMSG_FAILURES
Definition: totem.h:65
#define TOTEM_TOKEN_STATS_MAX
Definition: totem.h:276
void(* sync_abort)(void)
Definition: coroapi.h:524
void(* exec_handler_fn)(const void *msg, unsigned int nodeid)
Definition: coroapi.h:477
void cs_ipcs_sync_state_changed(int32_t sync_in_process)
Definition: ipc_glue.c:753
int corosync_sending_allowed(unsigned int service, unsigned int id, const void *msg, void *sending_allowed_private_data)
Definition: main.c:762
void icmap_fini(void)
Finalize global icmap.
Definition: icmap.c:261
int main_mcast(const struct iovec *iovec, unsigned int iov_len, unsigned int guarantee)
Definition: main.c:647
void cs_ipc_allow_connections(int32_t allow)
Definition: ipc_glue.c:155
void corosync_service_unlink_all(struct corosync_api_v1 *api, void(*unlink_all_complete)(void))
Unlink and exit all corosync services.
Definition: service.c:394
uint64_t operational_entered
Definition: totem.h:261
void(* sync_activate)(void)
Definition: sync.h:46
LOGSYS_DECLARE_SYSTEM("corosync", LOGSYS_MODE_OUTPUT_STDERR|LOGSYS_MODE_OUTPUT_SYSLOG, LOG_DAEMON, LOG_EMERG)
#define ICMAP_TRACK_DELETE
Definition: icmap.h:77
void(*) in log_level_security)
Definition: totem.h:85
void totempg_service_ready_register(void(*totem_service_ready)(void))
Definition: totempg.c:1502
#define ICMAP_KEYNAME_MAXLEN
Maximum length of key in icmap.
Definition: icmap.h:48
int latest_token
Definition: totem.h:275
uint64_t operational_token_lost
Definition: totem.h:262
#define MAX_NO_CONT_GATHER
Maximum number of continuous gather states.
Definition: totem.h:61
uint64_t consensus_timeouts
Definition: totem.h:269
int totem_config_keyread(struct totem_config *totem_config, const char **error_string)
Definition: totemconfig.c:1462
const char * name
Definition: sync.h:48
uint64_t recovery_token_lost
Definition: totem.h:268
#define LOGSYS_LEVEL_WARNING
Definition: logsys.h:71
#define ICMAP_TRACK_MODIFY
Definition: icmap.h:78
struct corosync_exec_handler * exec_engine
Definition: coroapi.h:507
unsigned int totempg_my_nodeid_get(void)
Definition: totempg.c:1493
cs_error_t icmap_set_uint32(const char *key_name, uint32_t value)
Definition: icmap.c:611
uint64_t commit_token_lost
Definition: totem.h:266
void * user_data
Definition: sam.c:127
uint64_t token_hold_cancel_rx
Definition: totem.h:260
int logsys_thread_start(void)
logsys_thread_start
Definition: logsys.c:820
int(* sync_process)(void)
Definition: coroapi.h:522
int totem_config_validate(struct totem_config *totem_config, const char **error_string)
Definition: totemconfig.c:1276
#define TOTEM_CONFIG_BINDNETADDR_NODELIST_SET
Definition: totemconfig.h:49
#define LOGSYS_MODE_OUTPUT_SYSLOG
Definition: logsys.h:60
#define ICMAP_TRACK_ADD
Definition: icmap.h:76
int totempg_groups_joined_reserve(void *instance, const struct iovec *iovec, unsigned int iov_len)
Definition: totempg.c:1283
const void * group
Definition: totempg.h:56
#define LOGSYS_LEVEL_ERROR
Definition: logsys.h:70
Linked list API.
struct totem_ip_address rep
Definition: coroapi.h:123
void sync_save_transitional(const unsigned int *member_list, size_t member_list_entries, const struct memb_ring_id *ring_id)
Definition: sync.c:587
int totempg_groups_mcast_joined(void *instance, const struct iovec *iovec, unsigned int iov_len, int guarantee)
Definition: totempg.c:1213
const char * service_stats_tx[SERVICES_COUNT_MAX][SERVICE_HANDLER_MAXIMUM_COUNT]
Definition: service.c:113
uint64_t mcast_retx
Definition: totem.h:255
cs_error_t icmap_get(const char *key_name, void *value, size_t *value_len, icmap_value_types_t *type)
Retrieve value of key key_name and store it in user preallocated value pointer.
Definition: icmap.c:739
int corosync_log_config_read(cmap_handle_t cmap_h, const char *default_logfile, const char **error_string)
Definition: logconfig.c:652
#define LOGSYS_LEVEL_DEBUG
Definition: logsys.h:74
void cs_ipcs_init(void)
Definition: ipc_glue.c:896
totemmrp_stats_t * mrp
Definition: totem.h:291
The corosync_api_v1 struct.
Definition: coroapi.h:225
typedef __attribute__
#define TOTEM_CONFIG_WARNING_MEMBERS_DEPRECATED
Definition: totemconfig.h:47
uint32_t msg_queue_avail
Definition: totem.h:293
uint64_t rx_msg_dropped
Definition: totem.h:270
void(* log_printf)(int level, int subsys, const char *function_name, const char *file_name, int file_line, const char *format,...) __attribute__((format(printf
Definition: totem.h:78
#define TOTEM_CONFIG_WARNING_MEMBERS_IGNORED
Definition: totemconfig.h:46
#define swab32(x)
The swab32 macro.
Definition: swab.h:51
uint32_t continuous_gather
Definition: totem.h:271
cs_error_t icmap_set_uint64(const char *key_name, uint64_t value)
Definition: icmap.c:623
totemrrp_stats_t * rrp
Definition: totem.h:247
cs_error_t icmap_fast_inc(const char *key_name)
Increase stored value by one.
Definition: icmap.c:1077
#define MILLI_2_NANO_SECONDS
Definition: coroapi.h:105
void message_source_set(mar_message_source_t *source, void *conn)
Definition: main.c:827
void logsys_config_apply(void)
logsys_config_apply
Definition: logsys.c:770
uint64_t token_hold_cancel_tx
Definition: totem.h:259
void(* totem_memb_ring_id_create_or_load)(struct memb_ring_id *memb_ring_id, const struct totem_ip_address *addr)
Definition: totem.h:194
int ip_version
Definition: totem.h:192
unsigned int token_timeout
Definition: totem.h:132
void totempg_check_q_level(void *instance)
Definition: totempg.c:1275
uint64_t mcast_tx
Definition: totem.h:254
const char * service_stats_rx[SERVICES_COUNT_MAX][SERVICE_HANDLER_MAXIMUM_COUNT]
Definition: service.c:112
void(* exec_endian_convert_fn)(void *msg)
Definition: coroapi.h:478
The memb_ring_id struct.
Definition: coroapi.h:122
struct corosync_api_v1 * apidef_get(void)
Definition: apidef.c:147
void corosync_sending_allowed_release(void *sending_allowed_private_data)
Definition: main.c:805
void cs_ipcs_stats_update(void)
Definition: ipc_glue.c:759
uint64_t memb_merge_detect_tx
Definition: totem.h:250
uint32_t msg_reserved
Definition: totem.h:292
totemsrp_stats_t * srp
Definition: totem.h:286
#define SERVICES_COUNT_MAX
Definition: coroapi.h:463
unsigned long long tv_prev
Definition: main.c:840
const char *(* totem_ifaces_print)(unsigned int nodeid)
Definition: coroapi.h:291
uint64_t memb_join_rx
Definition: totem.h:253
void corosync_state_dump(void)
Definition: main.c:196
qb_loop_timer_handle corosync_timer_handle_t
corosync_timer_handle_t
Definition: coroapi.h:74
int cs_poll_dispatch_delete(qb_loop_t *handle, int fd)
Definition: main.c:191
e_corosync_done
Definition: exec/util.h:47
int message_source_is_local(const mar_message_source_t *source)
Definition: main.c:816
struct totem_logging_configuration totem_logging_configuration
Definition: totem.h:166
int totempg_groups_join(void *instance, const struct totempg_group *groups, size_t group_cnt)
Definition: totempg.c:1163
#define LOGSYS_LEVEL_NOTICE
Definition: logsys.h:72
unsigned long long seq
Definition: coroapi.h:124
cs_error_t icmap_set_uint8(const char *key_name, uint8_t value)
Definition: icmap.c:587
uint64_t recovery_entered
Definition: totem.h:267
cs_error_t icmap_set_ro_access(const char *key_name, int prefix, int ro_access)
Set read-only access for given key (key_name) or prefix, If prefix is set.
Definition: icmap.c:1233
int totempg_initialize(qb_loop_t *poll_handle, struct totem_config *totem_config)
Initialize the totem process groups abstraction.
Definition: totempg.c:787
void corosync_shutdown_request(void)
Definition: main.c:243
uint32_t interface_count
Definition: totem.h:235
struct sched_param global_sched_param
Definition: main.c:165
unsigned int nodeid
Definition: coroapi.h:75
uint32_t continuous_sendmsg_failures
Definition: totem.h:272
uint8_t * faulty
Definition: totem.h:234
struct memb_ring_id ring_id
Definition: totemsrp.c:64
int main(int argc, char **argv, char **envp)
Definition: main.c:1237
cs_error_t icmap_init(void)
Initialize global icmap.
Definition: icmap.c:221
uint64_t commit_entered
Definition: totem.h:265
#define TOTEM_CONFIG_WARNING_TOTEM_NODEID_IGNORED
Definition: totemconfig.h:48
#define LOGSYS_MODE_OUTPUT_STDERR
Definition: logsys.h:59
uint64_t orf_token_rx
Definition: totem.h:249
void(* totem_memb_ring_id_store)(const struct memb_ring_id *memb_ring_id, const struct totem_ip_address *addr)
Definition: totem.h:198
Structure passed as new_value and old_value in change callback.
Definition: icmap.h:91
cs_error_t icmap_track_add(const char *key_name, int32_t track_type, icmap_notify_fn_t notify_fn, void *user_data, icmap_track_t *icmap_track)
Add tracking function for given key_name.
Definition: icmap.c:1167
int totem_config_read(struct totem_config *totem_config, const char **error_string, uint64_t *warnings)
Definition: totemconfig.c:978
int(* sync_process)(void)
Definition: sync.h:45
The mar_message_source_t struct.
Definition: coroapi.h:50
void logsys_system_fini(void)
logsys_system_fini
Definition: logsys.c:285