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diff --git a/exec/main.c b/exec/main.c
index cdc10567..cc2bd4c7 100644
--- a/exec/main.c
+++ b/exec/main.c
@@ -1,1928 +1,1942 @@
/*
* Copyright (c) 2002-2006 MontaVista Software, Inc.
* Copyright (c) 2006-2009 Red Hat, Inc.
*
* All rights reserved.
*
* Author: Steven Dake (sdake@redhat.com)
*
* This software licensed under BSD license, the text of which follows:
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of the MontaVista Software, Inc. nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <config.h>
#include <pthread.h>
#include <assert.h>
#include <sys/types.h>
#include <sys/file.h>
#include <sys/poll.h>
#include <sys/uio.h>
#include <sys/mman.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/stat.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <signal.h>
#include <sched.h>
#include <time.h>
#include <semaphore.h>
#include <corosync/swab.h>
#include <corosync/corotypes.h>
#include <corosync/coroipc_types.h>
#include <corosync/corodefs.h>
#include <corosync/list.h>
#include <corosync/lcr/lcr_ifact.h>
#include <corosync/totem/coropoll.h>
#include <corosync/totem/totempg.h>
#include <corosync/engine/objdb.h>
#include <corosync/engine/config.h>
#include <corosync/engine/logsys.h>
#include <corosync/coroipcs.h>
#include "quorum.h"
#include "totemsrp.h"
#include "mainconfig.h"
#include "totemconfig.h"
#include "main.h"
#include "sync.h"
#include "syncv2.h"
#include "tlist.h"
#include "timer.h"
#include "util.h"
#include "apidef.h"
#include "service.h"
#include "schedwrk.h"
#include "evil.h"
#ifdef HAVE_SMALL_MEMORY_FOOTPRINT
#define IPC_LOGSYS_SIZE 1024*64
#else
#define IPC_LOGSYS_SIZE 8192*128
#endif
LOGSYS_DECLARE_SYSTEM ("corosync",
LOGSYS_MODE_OUTPUT_STDERR | LOGSYS_MODE_THREADED | LOGSYS_MODE_FORK,
0,
NULL,
LOG_INFO,
LOG_DAEMON,
LOG_INFO,
NULL,
IPC_LOGSYS_SIZE);
LOGSYS_DECLARE_SUBSYS ("MAIN");
#define SERVER_BACKLOG 5
static int sched_priority = 0;
static unsigned int service_count = 32;
static pthread_mutex_t serialize_mutex = PTHREAD_MUTEX_INITIALIZER;
static struct totem_logging_configuration totem_logging_configuration;
static int num_config_modules;
static struct config_iface_ver0 *config_modules[MAX_DYNAMIC_SERVICES];
static struct objdb_iface_ver0 *objdb = NULL;
static struct corosync_api_v1 *api = NULL;
static enum cs_sync_mode minimum_sync_mode;
static int sync_in_process = 1;
+static pthread_mutex_t sync_in_process_mutex = PTHREAD_MUTEX_INITIALIZER;
+
static hdb_handle_t corosync_poll_handle;
struct sched_param global_sched_param;
static hdb_handle_t object_connection_handle;
static hdb_handle_t object_memb_handle;
static corosync_timer_handle_t corosync_stats_timer_handle;
static int corosync_exit_pipe[2] = {0, 0};
static const char *corosync_lock_file = LOCALSTATEDIR"/run/corosync.pid";
static int32_t corosync_not_enough_fds_left = 0;
static void serialize_unlock (void);
static void serialize_lock (void);
hdb_handle_t corosync_poll_handle_get (void)
{
return (corosync_poll_handle);
}
void corosync_state_dump (void)
{
int i;
for (i = 0; i < SERVICE_HANDLER_MAXIMUM_COUNT; i++) {
if (ais_service[i] && ais_service[i]->exec_dump_fn) {
ais_service[i]->exec_dump_fn ();
}
}
}
static void unlink_all_completed (void)
{
/*
* The schedwrk_do API takes the global serializer lock
* but doesn't release it because this exit callback is called
* before it finishes. Since we know we are exiting, we unlock it
* here
*/
serialize_unlock ();
api->timer_delete (corosync_stats_timer_handle);
poll_stop (corosync_poll_handle);
serialize_lock ();
}
void corosync_shutdown_request (void)
{
char buf = 0;
if (corosync_exit_pipe[1] == 0) {
corosync_exit_error (AIS_DONE_EXIT);
}
write(corosync_exit_pipe[1], &buf, sizeof(buf));
}
static int corosync_exit_dispatch_fn (
hdb_handle_t handle,
int fd,
int revents,
void *data)
{
totempg_stats_t * stats;
char buf;
read(corosync_exit_pipe[0], &buf, sizeof(buf));
stats = api->totem_get_stats();
if (stats->mrp->srp->continuous_gather > MAX_NO_CONT_GATHER ||
stats->mrp->srp->operational_entered == 0) {
unlink_all_completed ();
/* NOTREACHED */
}
corosync_service_unlink_all (api, unlink_all_completed);
return (-1);
}
static void sigusr2_handler (int num)
{
corosync_state_dump ();
logsys_log_rec_store (LOCALSTATEDIR "/lib/corosync/fdata");
}
static void sigterm_handler (int num)
{
corosync_shutdown_request ();
}
static void sigquit_handler (int num)
{
corosync_shutdown_request ();
}
static void sigintr_handler (int num)
{
corosync_shutdown_request ();
}
static void sigsegv_handler (int num)
{
(void)signal (SIGSEGV, SIG_DFL);
logsys_atexit();
logsys_log_rec_store (LOCALSTATEDIR "/lib/corosync/fdata");
raise (SIGSEGV);
}
static void sigabrt_handler (int num)
{
(void)signal (SIGABRT, SIG_DFL);
logsys_atexit();
logsys_log_rec_store (LOCALSTATEDIR "/lib/corosync/fdata");
raise (SIGABRT);
}
#define LOCALHOST_IP inet_addr("127.0.0.1")
static hdb_handle_t corosync_group_handle;
static struct totempg_group corosync_group = {
.group = "a",
.group_len = 1
};
static void serialize_lock (void)
{
pthread_mutex_lock (&serialize_mutex);
}
static void serialize_unlock (void)
{
pthread_mutex_unlock (&serialize_mutex);
}
static void corosync_sync_completed (void)
{
log_printf (LOGSYS_LEVEL_NOTICE,
"Completed service synchronization, ready to provide service.\n");
+
+ pthread_mutex_lock(&sync_in_process_mutex);
sync_in_process = 0;
/*
* Inform totem to start using new message queue again
*/
totempg_trans_ack();
+
+ pthread_mutex_unlock(&sync_in_process_mutex);
}
static int corosync_sync_callbacks_retrieve (int sync_id,
struct sync_callbacks *callbacks)
{
unsigned int ais_service_index;
int res;
for (ais_service_index = 0;
ais_service_index < SERVICE_HANDLER_MAXIMUM_COUNT;
ais_service_index++) {
if (ais_service[ais_service_index] != NULL
&& (ais_service[ais_service_index]->sync_mode == CS_SYNC_V1
|| ais_service[ais_service_index]->sync_mode == CS_SYNC_V1_APIV2)) {
if (ais_service_index == sync_id) {
break;
}
}
}
/*
* Try to load backwards compat sync engines
*/
if (ais_service_index == SERVICE_HANDLER_MAXIMUM_COUNT) {
res = evil_callbacks_load (sync_id, callbacks);
return (res);
}
if (callbacks == NULL) {
return (0);
}
callbacks->name = ais_service[ais_service_index]->name;
callbacks->sync_init_api.sync_init_v1 = ais_service[ais_service_index]->sync_init;
callbacks->api_version = 1;
if (ais_service[ais_service_index]->sync_mode == CS_SYNC_V1_APIV2) {
callbacks->api_version = 2;
}
callbacks->sync_process = ais_service[ais_service_index]->sync_process;
callbacks->sync_activate = ais_service[ais_service_index]->sync_activate;
callbacks->sync_abort = ais_service[ais_service_index]->sync_abort;
return (0);
}
static int corosync_sync_v2_callbacks_retrieve (
int service_id,
struct sync_callbacks *callbacks)
{
int res;
if (minimum_sync_mode == CS_SYNC_V2 && service_id == CLM_SERVICE && ais_service[CLM_SERVICE] == NULL) {
res = evil_callbacks_load (service_id, callbacks);
return (res);
}
if (minimum_sync_mode == CS_SYNC_V2 && service_id == EVT_SERVICE && ais_service[EVT_SERVICE] == NULL) {
res = evil_callbacks_load (service_id, callbacks);
return (res);
}
if (ais_service[service_id] == NULL) {
return (-1);
}
if (minimum_sync_mode == CS_SYNC_V1 && ais_service[service_id]->sync_mode != CS_SYNC_V2) {
return (-1);
}
if (callbacks == NULL) {
return (0);
}
callbacks->name = ais_service[service_id]->name;
callbacks->api_version = 1;
if (ais_service[service_id]->sync_mode == CS_SYNC_V1_APIV2) {
callbacks->api_version = 2;
}
callbacks->sync_init_api.sync_init_v1 = ais_service[service_id]->sync_init;
callbacks->sync_process = ais_service[service_id]->sync_process;
callbacks->sync_activate = ais_service[service_id]->sync_activate;
callbacks->sync_abort = ais_service[service_id]->sync_abort;
return (0);
}
static struct memb_ring_id corosync_ring_id;
static void member_object_joined (unsigned int nodeid)
{
hdb_handle_t object_find_handle;
hdb_handle_t object_node_handle;
char * nodeint_str;
char nodeid_str[64];
unsigned int key_incr_dummy;
snprintf (nodeid_str, 64, "%d", nodeid);
objdb->object_find_create (
object_memb_handle,
nodeid_str,
strlen (nodeid_str),
&object_find_handle);
if (objdb->object_find_next (object_find_handle,
&object_node_handle) == 0) {
objdb->object_key_increment (object_node_handle,
"join_count", strlen("join_count"),
&key_incr_dummy);
objdb->object_key_replace (object_node_handle,
"status", strlen("status"),
"joined", strlen("joined"));
} else {
nodeint_str = (char*)api->totem_ifaces_print (nodeid);
objdb->object_create (object_memb_handle,
&object_node_handle,
nodeid_str, strlen (nodeid_str));
objdb->object_key_create_typed (object_node_handle,
"ip",
nodeint_str, strlen(nodeint_str),
OBJDB_VALUETYPE_STRING);
key_incr_dummy = 1;
objdb->object_key_create_typed (object_node_handle,
"join_count",
&key_incr_dummy, sizeof (key_incr_dummy),
OBJDB_VALUETYPE_UINT32);
objdb->object_key_create_typed (object_node_handle,
"status",
"joined", strlen("joined"),
OBJDB_VALUETYPE_STRING);
}
objdb->object_find_destroy (object_find_handle);
}
static void member_object_left (unsigned int nodeid)
{
hdb_handle_t object_find_handle;
hdb_handle_t object_node_handle;
char nodeid_str[64];
snprintf (nodeid_str, 64, "%u", nodeid);
objdb->object_find_create (
object_memb_handle,
nodeid_str,
strlen (nodeid_str),
&object_find_handle);
if (objdb->object_find_next (object_find_handle,
&object_node_handle) == 0) {
objdb->object_key_replace (object_node_handle,
"status", strlen("status"),
"left", strlen("left"));
}
objdb->object_find_destroy (object_find_handle);
}
static 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)
{
int i;
int abort_activate = 0;
+ pthread_mutex_lock(&sync_in_process_mutex);
+
if (sync_in_process == 1) {
abort_activate = 1;
}
sync_in_process = 1;
+
+ pthread_mutex_unlock(&sync_in_process_mutex);
serialize_lock ();
memcpy (&corosync_ring_id, ring_id, sizeof (struct memb_ring_id));
for (i = 0; i < left_list_entries; i++) {
member_object_left (left_list[i]);
}
for (i = 0; i < joined_list_entries; i++) {
member_object_joined (joined_list[i]);
}
/*
* Call configuration change for all services
*/
for (i = 0; i < service_count; i++) {
if (ais_service[i] && ais_service[i]->confchg_fn) {
ais_service[i]->confchg_fn (configuration_type,
member_list, member_list_entries,
left_list, left_list_entries,
joined_list, joined_list_entries, ring_id);
}
}
serialize_unlock ();
if (abort_activate) {
sync_v2_abort ();
}
if (minimum_sync_mode == CS_SYNC_V2 && configuration_type == TOTEM_CONFIGURATION_TRANSITIONAL) {
sync_v2_save_transitional (member_list, member_list_entries, ring_id);
}
if (minimum_sync_mode == CS_SYNC_V2 && configuration_type == TOTEM_CONFIGURATION_REGULAR) {
sync_v2_start (member_list, member_list_entries, ring_id);
}
}
static void priv_drop (void)
{
return; /* TODO: we are still not dropping privs */
}
static void corosync_tty_detach (void)
{
FILE *r;
/*
* Disconnect from TTY if this is not a debug run
*/
switch (fork ()) {
case -1:
corosync_exit_error (AIS_DONE_FORK);
break;
case 0:
/*
* child which is disconnected, run this process
*/
break;
default:
exit (0);
break;
}
/* Create new session */
(void)setsid();
/*
* Map stdin/out/err to /dev/null.
*/
r = freopen("/dev/null", "r", stdin);
if (r == NULL) {
corosync_exit_error (AIS_DONE_STD_TO_NULL_REDIR);
}
r = freopen("/dev/null", "a", stderr);
if (r == NULL) {
corosync_exit_error (AIS_DONE_STD_TO_NULL_REDIR);
}
r = freopen("/dev/null", "a", stdout);
if (r == NULL) {
corosync_exit_error (AIS_DONE_STD_TO_NULL_REDIR);
}
}
static void corosync_mlockall (void)
{
#if !defined(COROSYNC_BSD) || defined(COROSYNC_FREEBSD_GE_8)
int res;
#endif
struct rlimit rlimit;
rlimit.rlim_cur = RLIM_INFINITY;
rlimit.rlim_max = RLIM_INFINITY;
#ifndef COROSYNC_SOLARIS
setrlimit (RLIMIT_MEMLOCK, &rlimit);
#else
setrlimit (RLIMIT_VMEM, &rlimit);
#endif
#if defined(COROSYNC_BSD) && !defined(COROSYNC_FREEBSD_GE_8)
/* under FreeBSD < 8 a process with locked page cannot call dlopen
* code disabled until FreeBSD bug i386/93396 was solved
*/
log_printf (LOGSYS_LEVEL_WARNING, "Could not lock memory of service to avoid page faults\n");
#else
res = mlockall (MCL_CURRENT | MCL_FUTURE);
if (res == -1) {
LOGSYS_PERROR (errno, LOGSYS_LEVEL_WARNING,
"Could not lock memory of service to avoid page faults");
};
#endif
}
static void corosync_totem_stats_updater (void *data)
{
totempg_stats_t * stats;
uint32_t mtt_rx_token;
uint32_t total_mtt_rx_token;
uint32_t avg_backlog_calc;
uint32_t total_backlog_calc;
uint32_t avg_token_holdtime;
uint32_t total_token_holdtime;
int t, prev;
int32_t token_count;
uint32_t firewall_enabled_or_nic_failure;
stats = api->totem_get_stats();
objdb->object_key_replace (stats->hdr.handle,
"msg_reserved", strlen("msg_reserved"),
&stats->msg_reserved, sizeof (stats->msg_reserved));
objdb->object_key_replace (stats->hdr.handle,
"msg_queue_avail", strlen("msg_queue_avail"),
&stats->msg_queue_avail, sizeof (stats->msg_queue_avail));
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"orf_token_tx", strlen("orf_token_tx"),
&stats->mrp->srp->orf_token_tx, sizeof (stats->mrp->srp->orf_token_tx));
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"orf_token_rx", strlen("orf_token_rx"),
&stats->mrp->srp->orf_token_rx, sizeof (stats->mrp->srp->orf_token_rx));
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"memb_merge_detect_tx", strlen("memb_merge_detect_tx"),
&stats->mrp->srp->memb_merge_detect_tx, sizeof (stats->mrp->srp->memb_merge_detect_tx));
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"memb_merge_detect_rx", strlen("memb_merge_detect_rx"),
&stats->mrp->srp->memb_merge_detect_rx, sizeof (stats->mrp->srp->memb_merge_detect_rx));
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"memb_join_tx", strlen("memb_join_tx"),
&stats->mrp->srp->memb_join_tx, sizeof (stats->mrp->srp->memb_join_tx));
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"memb_join_rx", strlen("memb_join_rx"),
&stats->mrp->srp->memb_join_rx, sizeof (stats->mrp->srp->memb_join_rx));
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"mcast_tx", strlen("mcast_tx"),
&stats->mrp->srp->mcast_tx, sizeof (stats->mrp->srp->mcast_tx));
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"mcast_retx", strlen("mcast_retx"),
&stats->mrp->srp->mcast_retx, sizeof (stats->mrp->srp->mcast_retx));
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"mcast_rx", strlen("mcast_rx"),
&stats->mrp->srp->mcast_rx, sizeof (stats->mrp->srp->mcast_rx));
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"memb_commit_token_tx", strlen("memb_commit_token_tx"),
&stats->mrp->srp->memb_commit_token_tx, sizeof (stats->mrp->srp->memb_commit_token_tx));
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"memb_commit_token_rx", strlen("memb_commit_token_rx"),
&stats->mrp->srp->memb_commit_token_rx, sizeof (stats->mrp->srp->memb_commit_token_rx));
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"token_hold_cancel_tx", strlen("token_hold_cancel_tx"),
&stats->mrp->srp->token_hold_cancel_tx, sizeof (stats->mrp->srp->token_hold_cancel_tx));
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"token_hold_cancel_rx", strlen("token_hold_cancel_rx"),
&stats->mrp->srp->token_hold_cancel_rx, sizeof (stats->mrp->srp->token_hold_cancel_rx));
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"operational_entered", strlen("operational_entered"),
&stats->mrp->srp->operational_entered, sizeof (stats->mrp->srp->operational_entered));
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"operational_token_lost", strlen("operational_token_lost"),
&stats->mrp->srp->operational_token_lost, sizeof (stats->mrp->srp->operational_token_lost));
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"gather_entered", strlen("gather_entered"),
&stats->mrp->srp->gather_entered, sizeof (stats->mrp->srp->gather_entered));
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"gather_token_lost", strlen("gather_token_lost"),
&stats->mrp->srp->gather_token_lost, sizeof (stats->mrp->srp->gather_token_lost));
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"commit_entered", strlen("commit_entered"),
&stats->mrp->srp->commit_entered, sizeof (stats->mrp->srp->commit_entered));
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"commit_token_lost", strlen("commit_token_lost"),
&stats->mrp->srp->commit_token_lost, sizeof (stats->mrp->srp->commit_token_lost));
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"recovery_entered", strlen("recovery_entered"),
&stats->mrp->srp->recovery_entered, sizeof (stats->mrp->srp->recovery_entered));
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"recovery_token_lost", strlen("recovery_token_lost"),
&stats->mrp->srp->recovery_token_lost, sizeof (stats->mrp->srp->recovery_token_lost));
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"consensus_timeouts", strlen("consensus_timeouts"),
&stats->mrp->srp->consensus_timeouts, sizeof (stats->mrp->srp->consensus_timeouts));
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"rx_msg_dropped", strlen("rx_msg_dropped"),
&stats->mrp->srp->rx_msg_dropped, sizeof (stats->mrp->srp->rx_msg_dropped));
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"continuous_gather", strlen("continuous_gather"),
&stats->mrp->srp->continuous_gather, sizeof (stats->mrp->srp->continuous_gather));
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"continuous_sendmsg_failures", strlen("continuous_sendmsg_failures"),
&stats->mrp->srp->continuous_sendmsg_failures, sizeof (stats->mrp->srp->continuous_sendmsg_failures));
if (stats->mrp->srp->continuous_gather > MAX_NO_CONT_GATHER ||
stats->mrp->srp->continuous_sendmsg_failures > MAX_NO_CONT_SENDMSG_FAILURES) {
log_printf (LOGSYS_LEVEL_WARNING,
"Totem is unable to form a cluster because of an "
"operating system or network fault. The most common "
"cause of this message is that the local firewall is "
"configured improperly.");
firewall_enabled_or_nic_failure = 1;
} else {
firewall_enabled_or_nic_failure = 0;
}
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"firewall_enabled_or_nic_failure", strlen("firewall_enabled_or_nic_failure"),
&firewall_enabled_or_nic_failure, sizeof (firewall_enabled_or_nic_failure));
total_mtt_rx_token = 0;
total_token_holdtime = 0;
total_backlog_calc = 0;
token_count = 0;
t = stats->mrp->srp->latest_token;
while (1) {
if (t == 0)
prev = TOTEM_TOKEN_STATS_MAX - 1;
else
prev = t - 1;
if (prev == stats->mrp->srp->earliest_token)
break;
/* if tx == 0, then dropped token (not ours) */
if (stats->mrp->srp->token[t].tx != 0 ||
(stats->mrp->srp->token[t].rx - stats->mrp->srp->token[prev].rx) > 0 ) {
total_mtt_rx_token += (stats->mrp->srp->token[t].rx - stats->mrp->srp->token[prev].rx);
total_token_holdtime += (stats->mrp->srp->token[t].tx - stats->mrp->srp->token[t].rx);
total_backlog_calc += stats->mrp->srp->token[t].backlog_calc;
token_count++;
}
t = prev;
}
if (token_count) {
mtt_rx_token = (total_mtt_rx_token / token_count);
avg_backlog_calc = (total_backlog_calc / token_count);
avg_token_holdtime = (total_token_holdtime / token_count);
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"mtt_rx_token", strlen("mtt_rx_token"),
&mtt_rx_token, sizeof (mtt_rx_token));
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"avg_token_workload", strlen("avg_token_workload"),
&avg_token_holdtime, sizeof (avg_token_holdtime));
objdb->object_key_replace (stats->mrp->srp->hdr.handle,
"avg_backlog_calc", strlen("avg_backlog_calc"),
&avg_backlog_calc, sizeof (avg_backlog_calc));
}
api->timer_add_duration (1500 * MILLI_2_NANO_SECONDS, NULL,
corosync_totem_stats_updater,
&corosync_stats_timer_handle);
}
static void corosync_totem_stats_init (void)
{
totempg_stats_t * stats;
hdb_handle_t object_find_handle;
hdb_handle_t object_runtime_handle;
hdb_handle_t object_totem_handle;
uint32_t zero_32 = 0;
uint64_t zero_64 = 0;
stats = api->totem_get_stats();
objdb->object_find_create (
OBJECT_PARENT_HANDLE,
"runtime",
strlen ("runtime"),
&object_find_handle);
if (objdb->object_find_next (object_find_handle,
&object_runtime_handle) == 0) {
objdb->object_create (object_runtime_handle,
&object_totem_handle,
"totem", strlen ("totem"));
objdb->object_create (object_totem_handle,
&stats->hdr.handle,
"pg", strlen ("pg"));
objdb->object_create (stats->hdr.handle,
&stats->mrp->hdr.handle,
"mrp", strlen ("mrp"));
objdb->object_create (stats->mrp->hdr.handle,
&stats->mrp->srp->hdr.handle,
"srp", strlen ("srp"));
objdb->object_key_create_typed (stats->hdr.handle,
"msg_reserved", &stats->msg_reserved,
sizeof (stats->msg_reserved), OBJDB_VALUETYPE_UINT32);
objdb->object_key_create_typed (stats->hdr.handle,
"msg_queue_avail", &stats->msg_queue_avail,
sizeof (stats->msg_queue_avail), OBJDB_VALUETYPE_UINT32);
/* Members object */
objdb->object_create (stats->mrp->srp->hdr.handle,
&object_memb_handle,
"members", strlen ("members"));
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"orf_token_tx", &stats->mrp->srp->orf_token_tx,
sizeof (stats->mrp->srp->orf_token_tx), OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"orf_token_rx", &stats->mrp->srp->orf_token_rx,
sizeof (stats->mrp->srp->orf_token_rx), OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"memb_merge_detect_tx", &stats->mrp->srp->memb_merge_detect_tx,
sizeof (stats->mrp->srp->memb_merge_detect_tx), OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"memb_merge_detect_rx", &stats->mrp->srp->memb_merge_detect_rx,
sizeof (stats->mrp->srp->memb_merge_detect_rx), OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"memb_join_tx", &stats->mrp->srp->memb_join_tx,
sizeof (stats->mrp->srp->memb_join_tx), OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"memb_join_rx", &stats->mrp->srp->memb_join_rx,
sizeof (stats->mrp->srp->memb_join_rx), OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"mcast_tx", &stats->mrp->srp->mcast_tx,
sizeof (stats->mrp->srp->mcast_tx), OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"mcast_retx", &stats->mrp->srp->mcast_retx,
sizeof (stats->mrp->srp->mcast_retx), OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"mcast_rx", &stats->mrp->srp->mcast_rx,
sizeof (stats->mrp->srp->mcast_rx), OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"memb_commit_token_tx", &stats->mrp->srp->memb_commit_token_tx,
sizeof (stats->mrp->srp->memb_commit_token_tx), OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"memb_commit_token_rx", &stats->mrp->srp->memb_commit_token_rx,
sizeof (stats->mrp->srp->memb_commit_token_rx), OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"token_hold_cancel_tx", &stats->mrp->srp->token_hold_cancel_tx,
sizeof (stats->mrp->srp->token_hold_cancel_tx), OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"token_hold_cancel_rx", &stats->mrp->srp->token_hold_cancel_rx,
sizeof (stats->mrp->srp->token_hold_cancel_rx), OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"operational_entered", &stats->mrp->srp->operational_entered,
sizeof (stats->mrp->srp->operational_entered), OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"operational_token_lost", &stats->mrp->srp->operational_token_lost,
sizeof (stats->mrp->srp->operational_token_lost), OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"gather_entered", &stats->mrp->srp->gather_entered,
sizeof (stats->mrp->srp->gather_entered), OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"gather_token_lost", &stats->mrp->srp->gather_token_lost,
sizeof (stats->mrp->srp->gather_token_lost), OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"commit_entered", &stats->mrp->srp->commit_entered,
sizeof (stats->mrp->srp->commit_entered), OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"commit_token_lost", &stats->mrp->srp->commit_token_lost,
sizeof (stats->mrp->srp->commit_token_lost), OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"recovery_entered", &stats->mrp->srp->recovery_entered,
sizeof (stats->mrp->srp->recovery_entered), OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"recovery_token_lost", &stats->mrp->srp->recovery_token_lost,
sizeof (stats->mrp->srp->recovery_token_lost), OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"consensus_timeouts", &stats->mrp->srp->consensus_timeouts,
sizeof (stats->mrp->srp->consensus_timeouts), OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"mtt_rx_token", &zero_32,
sizeof (zero_32), OBJDB_VALUETYPE_UINT32);
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"avg_token_workload", &zero_32,
sizeof (zero_32), OBJDB_VALUETYPE_UINT32);
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"avg_backlog_calc", &zero_32,
sizeof (zero_32), OBJDB_VALUETYPE_UINT32);
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"rx_msg_dropped", &zero_64,
sizeof (zero_64), OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"continuous_gather", &zero_32,
sizeof (zero_32), OBJDB_VALUETYPE_UINT32);
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"continuous_sendmsg_failures", &zero_32,
sizeof (zero_32), OBJDB_VALUETYPE_UINT32);
objdb->object_key_create_typed (stats->mrp->srp->hdr.handle,
"firewall_enabled_or_nic_failure", &zero_32,
sizeof (zero_32), OBJDB_VALUETYPE_UINT32);
}
objdb->object_find_destroy (object_find_handle);
/* start stats timer */
api->timer_add_duration (1500 * MILLI_2_NANO_SECONDS, NULL,
corosync_totem_stats_updater,
&corosync_stats_timer_handle);
}
static void deliver_fn (
unsigned int nodeid,
const void *msg,
unsigned int msg_len,
int endian_conversion_required)
{
const coroipc_request_header_t *header;
int service;
int fn_id;
unsigned int id;
unsigned int size;
unsigned int key_incr_dummy;
header = msg;
if (endian_conversion_required) {
id = swab32 (header->id);
size = swab32 (header->size);
} else {
id = header->id;
size = header->size;
}
/*
* Call the proper executive handler
*/
service = id >> 16;
fn_id = id & 0xffff;
serialize_lock();
if (ais_service[service] == NULL && service == EVT_SERVICE) {
evil_deliver_fn (nodeid, service, fn_id, msg,
endian_conversion_required);
}
if (!ais_service[service]) {
serialize_unlock();
return;
}
if (fn_id >= ais_service[service]->exec_engine_count) {
log_printf(LOGSYS_LEVEL_WARNING, "discarded unknown message %d for service %d (max id %d)",
fn_id, service, ais_service[service]->exec_engine_count);
serialize_unlock();
return;
}
objdb->object_key_increment (service_stats_handle[service][fn_id],
"rx", strlen("rx"),
&key_incr_dummy);
if (endian_conversion_required) {
assert(ais_service[service]->exec_engine[fn_id].exec_endian_convert_fn != NULL);
ais_service[service]->exec_engine[fn_id].exec_endian_convert_fn
((void *)msg);
}
ais_service[service]->exec_engine[fn_id].exec_handler_fn
(msg, nodeid);
serialize_unlock();
}
void main_get_config_modules(struct config_iface_ver0 ***modules, int *num)
{
*modules = config_modules;
*num = num_config_modules;
}
int main_mcast (
const struct iovec *iovec,
unsigned int iov_len,
unsigned int guarantee)
{
const coroipc_request_header_t *req = iovec->iov_base;
int service;
int fn_id;
unsigned int key_incr_dummy;
service = req->id >> 16;
fn_id = req->id & 0xffff;
if (ais_service[service]) {
objdb->object_key_increment (service_stats_handle[service][fn_id],
"tx", strlen("tx"), &key_incr_dummy);
}
return (totempg_groups_mcast_joined (corosync_group_handle, iovec, iov_len, guarantee));
}
int message_source_is_local (const mar_message_source_t *source)
{
int ret = 0;
assert (source != NULL);
if (source->nodeid == totempg_my_nodeid_get ()) {
ret = 1;
}
return ret;
}
void message_source_set (
mar_message_source_t *source,
void *conn)
{
assert ((source != NULL) && (conn != NULL));
memset (source, 0, sizeof (mar_message_source_t));
source->nodeid = totempg_my_nodeid_get ();
source->conn = conn;
}
/*
* Provides the glue from corosync to the IPC Service
*/
static int corosync_private_data_size_get (unsigned int service)
{
return (ais_service[service]->private_data_size);
}
static coroipcs_init_fn_lvalue corosync_init_fn_get (unsigned int service)
{
return (ais_service[service]->lib_init_fn);
}
static coroipcs_exit_fn_lvalue corosync_exit_fn_get (unsigned int service)
{
return (ais_service[service]->lib_exit_fn);
}
static coroipcs_handler_fn_lvalue corosync_handler_fn_get (unsigned int service, unsigned int id)
{
return (ais_service[service]->lib_engine[id].lib_handler_fn);
}
static int corosync_security_valid (int euid, int egid)
{
struct list_head *iter;
if (corosync_not_enough_fds_left) {
errno = EMFILE;
return 0;
}
if (euid == 0 || egid == 0) {
return (1);
}
for (iter = uidgid_list_head.next; iter != &uidgid_list_head;
iter = iter->next) {
struct uidgid_item *ugi = list_entry (iter, struct uidgid_item,
list);
if (euid == ugi->uid || egid == ugi->gid)
return (1);
}
errno = EACCES;
return (0);
}
static int corosync_service_available (unsigned int service)
{
return (ais_service[service] != NULL && !ais_service_exiting[service]);
}
struct sending_allowed_private_data_struct {
int reserved_msgs;
};
static int corosync_sending_allowed (
unsigned int service,
unsigned int id,
const void *msg,
void *sending_allowed_private_data)
{
struct sending_allowed_private_data_struct *pd =
(struct sending_allowed_private_data_struct *)sending_allowed_private_data;
struct iovec reserve_iovec;
coroipc_request_header_t *header = (coroipc_request_header_t *)msg;
int sending_allowed;
reserve_iovec.iov_base = (char *)header;
reserve_iovec.iov_len = header->size;
pd->reserved_msgs = totempg_groups_joined_reserve (
corosync_group_handle,
&reserve_iovec, 1);
if (pd->reserved_msgs == -1) {
return (-1);
}
+ pthread_mutex_lock(&sync_in_process_mutex);
+
sending_allowed =
(corosync_quorum_is_quorate() == 1 ||
ais_service[service]->allow_inquorate == CS_LIB_ALLOW_INQUORATE) &&
((ais_service[service]->lib_engine[id].flow_control == CS_LIB_FLOW_CONTROL_NOT_REQUIRED) ||
((ais_service[service]->lib_engine[id].flow_control == CS_LIB_FLOW_CONTROL_REQUIRED) &&
(pd->reserved_msgs) &&
(sync_in_process == 0)));
+ pthread_mutex_unlock(&sync_in_process_mutex);
+
return (sending_allowed);
}
static void corosync_sending_allowed_release (void *sending_allowed_private_data)
{
struct sending_allowed_private_data_struct *pd =
(struct sending_allowed_private_data_struct *)sending_allowed_private_data;
if (pd->reserved_msgs == -1) {
return;
}
totempg_groups_joined_release (pd->reserved_msgs);
}
static int ipc_subsys_id = -1;
static void ipc_fatal_error(const char *error_msg) __attribute__((noreturn));
static void ipc_fatal_error(const char *error_msg) {
_logsys_log_printf (
LOGSYS_ENCODE_RECID(LOGSYS_LEVEL_ERROR,
ipc_subsys_id,
LOGSYS_RECID_LOG),
__FUNCTION__, __FILE__, __LINE__,
"%s", error_msg);
exit(EXIT_FAILURE);
}
static int corosync_poll_handler_accept (
hdb_handle_t handle,
int fd,
int revent,
void *context)
{
return (coroipcs_handler_accept (fd, revent, context));
}
static int corosync_poll_handler_dispatch (
hdb_handle_t handle,
int fd,
int revent,
void *context)
{
return (coroipcs_handler_dispatch (fd, revent, context));
}
static void corosync_poll_accept_add (
int fd)
{
poll_dispatch_add (corosync_poll_handle, fd, POLLIN|POLLNVAL, 0,
corosync_poll_handler_accept);
}
static void corosync_poll_dispatch_add (
int fd,
void *context)
{
poll_dispatch_add (corosync_poll_handle, fd, POLLIN|POLLNVAL, context,
corosync_poll_handler_dispatch);
}
static void corosync_poll_dispatch_modify (
int fd,
int events)
{
poll_dispatch_modify (corosync_poll_handle, fd, events,
corosync_poll_handler_dispatch);
}
static void corosync_poll_dispatch_destroy (
int fd,
void *context)
{
poll_dispatch_delete (corosync_poll_handle, fd);
}
static hdb_handle_t corosync_stats_create_connection (const char* name,
const pid_t pid, const int fd)
{
uint32_t zero_32 = 0;
uint64_t zero_64 = 0;
unsigned int key_incr_dummy;
hdb_handle_t object_handle;
objdb->object_key_increment (object_connection_handle,
"active", strlen("active"),
&key_incr_dummy);
objdb->object_create (object_connection_handle,
&object_handle,
name,
strlen (name));
objdb->object_key_create_typed (object_handle,
"service_id",
&zero_32, sizeof (zero_32),
OBJDB_VALUETYPE_UINT32);
objdb->object_key_create_typed (object_handle,
"client_pid",
&pid, sizeof (pid),
OBJDB_VALUETYPE_INT32);
objdb->object_key_create_typed (object_handle,
"responses",
&zero_64, sizeof (zero_64),
OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (object_handle,
"dispatched",
&zero_64, sizeof (zero_64),
OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (object_handle,
"requests",
&zero_64, sizeof (zero_64),
OBJDB_VALUETYPE_INT64);
objdb->object_key_create_typed (object_handle,
"sem_retry_count",
&zero_64, sizeof (zero_64),
OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (object_handle,
"send_retry_count",
&zero_64, sizeof (zero_64),
OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (object_handle,
"recv_retry_count",
&zero_64, sizeof (zero_64),
OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (object_handle,
"flow_control",
&zero_32, sizeof (zero_32),
OBJDB_VALUETYPE_UINT32);
objdb->object_key_create_typed (object_handle,
"flow_control_count",
&zero_64, sizeof (zero_64),
OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (object_handle,
"queue_size",
&zero_64, sizeof (zero_64),
OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (object_handle,
"invalid_request",
&zero_64, sizeof (zero_64),
OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (object_handle,
"overload",
&zero_64, sizeof (zero_64),
OBJDB_VALUETYPE_UINT64);
return object_handle;
}
static void corosync_stats_destroy_connection (hdb_handle_t handle)
{
unsigned int key_incr_dummy;
objdb->object_destroy (handle);
objdb->object_key_increment (object_connection_handle,
"closed", strlen("closed"),
&key_incr_dummy);
objdb->object_key_decrement (object_connection_handle,
"active", strlen("active"),
&key_incr_dummy);
}
static void corosync_stats_update_value (hdb_handle_t handle,
const char *name, const void *value,
size_t value_len)
{
objdb->object_key_replace (handle,
name, strlen(name),
value, value_len);
}
static void corosync_stats_increment_value (hdb_handle_t handle,
const char* name)
{
unsigned int key_incr_dummy;
objdb->object_key_increment (handle,
name, strlen(name),
&key_incr_dummy);
}
static void corosync_stats_decrement_value (hdb_handle_t handle,
const char* name)
{
unsigned int key_incr_dummy;
objdb->object_key_decrement (handle,
name, strlen(name),
&key_incr_dummy);
}
static struct coroipcs_init_state_v2 ipc_init_state_v2 = {
.socket_name = COROSYNC_SOCKET_NAME,
.sched_policy = SCHED_OTHER,
.sched_param = &global_sched_param,
.malloc = malloc,
.free = free,
.log_printf = _logsys_log_printf,
.fatal_error = ipc_fatal_error,
.security_valid = corosync_security_valid,
.service_available = corosync_service_available,
.private_data_size_get = corosync_private_data_size_get,
.serialize_lock = serialize_lock,
.serialize_unlock = serialize_unlock,
.sending_allowed = corosync_sending_allowed,
.sending_allowed_release = corosync_sending_allowed_release,
.poll_accept_add = corosync_poll_accept_add,
.poll_dispatch_add = corosync_poll_dispatch_add,
.poll_dispatch_modify = corosync_poll_dispatch_modify,
.poll_dispatch_destroy = corosync_poll_dispatch_destroy,
.init_fn_get = corosync_init_fn_get,
.exit_fn_get = corosync_exit_fn_get,
.handler_fn_get = corosync_handler_fn_get,
.stats_create_connection = corosync_stats_create_connection,
.stats_destroy_connection = corosync_stats_destroy_connection,
.stats_update_value = corosync_stats_update_value,
.stats_increment_value = corosync_stats_increment_value,
.stats_decrement_value = corosync_stats_decrement_value,
};
struct scheduler_pause_timeout_data {
struct totem_config *totem_config;
poll_timer_handle handle;
unsigned long long tv_prev;
unsigned long long max_tv_diff;
};
static void timer_function_scheduler_timeout (void *data)
{
struct scheduler_pause_timeout_data *timeout_data = (struct scheduler_pause_timeout_data *)data;
unsigned long long tv_current;
unsigned long long tv_diff;
tv_current = timerlist_nano_current_get ();
if (timeout_data->tv_prev == 0) {
/*
* Initial call -> just pretent everything is ok
*/
timeout_data->tv_prev = tv_current;
timeout_data->max_tv_diff = 0;
}
tv_diff = tv_current - timeout_data->tv_prev;
timeout_data->tv_prev = tv_current;
if (tv_diff > timeout_data->max_tv_diff) {
log_printf (LOGSYS_LEVEL_WARNING, "Corosync main process was not scheduled for %0.4f ms "
"(threshold is %0.4f ms). Consider token timeout increase.",
(float)tv_diff / TIMERLIST_NS_IN_MSEC, (float)timeout_data->max_tv_diff / TIMERLIST_NS_IN_MSEC);
}
/*
* Set next threshold, because token_timeout can change
*/
timeout_data->max_tv_diff = timeout_data->totem_config->token_timeout * TIMERLIST_NS_IN_MSEC * 0.8;
poll_timer_add (corosync_poll_handle,
timeout_data->totem_config->token_timeout / 3,
timeout_data,
timer_function_scheduler_timeout,
&timeout_data->handle);
}
static void corosync_setscheduler (void)
{
#if defined(HAVE_PTHREAD_SETSCHEDPARAM) && defined(HAVE_SCHED_GET_PRIORITY_MAX) && defined(HAVE_SCHED_SETSCHEDULER)
int res;
sched_priority = sched_get_priority_max (SCHED_RR);
if (sched_priority != -1) {
global_sched_param.sched_priority = sched_priority;
res = sched_setscheduler (0, SCHED_RR, &global_sched_param);
if (res == -1) {
LOGSYS_PERROR(errno, LOGSYS_LEVEL_WARNING,
"Could not set SCHED_RR at priority %d",
global_sched_param.sched_priority);
global_sched_param.sched_priority = 0;
logsys_thread_priority_set (SCHED_OTHER, NULL, 1);
} else {
/*
* Turn on SCHED_RR in ipc system
*/
ipc_init_state_v2.sched_policy = SCHED_RR;
/*
* Turn on SCHED_RR in logsys system
*/
res = logsys_thread_priority_set (SCHED_RR, &global_sched_param, 10);
if (res == -1) {
log_printf (LOGSYS_LEVEL_ERROR,
"Could not set logsys thread priority."
" Can't continue because of priority inversions.");
corosync_exit_error (AIS_DONE_LOGSETUP);
}
}
} else {
LOGSYS_PERROR (errno, LOGSYS_LEVEL_WARNING,
"Could not get maximum scheduler priority");
sched_priority = 0;
}
#else
log_printf(LOGSYS_LEVEL_WARNING,
"The Platform is missing process priority setting features. Leaving at default.");
#endif
}
static void fplay_key_change_notify_fn (
object_change_type_t change_type,
hdb_handle_t parent_object_handle,
hdb_handle_t object_handle,
const void *object_name_pt, size_t object_name_len,
const void *key_name_pt, size_t key_len,
const void *key_value_pt, size_t key_value_len,
void *priv_data_pt)
{
if (key_len == strlen ("dump_flight_data") &&
memcmp ("dump_flight_data", key_name_pt, key_len) == 0) {
logsys_log_rec_store (LOCALSTATEDIR "/lib/corosync/fdata");
}
if (key_len == strlen ("dump_state") &&
memcmp ("dump_state", key_name_pt, key_len) == 0) {
corosync_state_dump ();
}
}
static void corosync_fplay_control_init (void)
{
hdb_handle_t object_find_handle;
hdb_handle_t object_runtime_handle;
hdb_handle_t object_blackbox_handle;
objdb->object_find_create (OBJECT_PARENT_HANDLE,
"runtime", strlen ("runtime"),
&object_find_handle);
if (objdb->object_find_next (object_find_handle,
&object_runtime_handle) != 0) {
return;
}
objdb->object_find_destroy (object_find_handle);
objdb->object_create (object_runtime_handle,
&object_blackbox_handle,
"blackbox", strlen ("blackbox"));
objdb->object_key_create_typed (object_blackbox_handle,
"dump_flight_data", "no", strlen("no"),
OBJDB_VALUETYPE_STRING);
objdb->object_key_create_typed (object_blackbox_handle,
"dump_state", "no", strlen("no"),
OBJDB_VALUETYPE_STRING);
objdb->object_track_start (object_blackbox_handle,
OBJECT_TRACK_DEPTH_RECURSIVE,
fplay_key_change_notify_fn,
NULL, NULL, NULL, NULL);
}
static void corosync_stats_init (void)
{
hdb_handle_t object_find_handle;
hdb_handle_t object_runtime_handle;
uint64_t zero_64 = 0;
objdb->object_find_create (OBJECT_PARENT_HANDLE,
"runtime", strlen ("runtime"),
&object_find_handle);
if (objdb->object_find_next (object_find_handle,
&object_runtime_handle) != 0) {
return;
}
objdb->object_find_destroy (object_find_handle);
/* Connection objects */
objdb->object_create (object_runtime_handle,
&object_connection_handle,
"connections", strlen ("connections"));
objdb->object_key_create_typed (object_connection_handle,
"active", &zero_64, sizeof (zero_64),
OBJDB_VALUETYPE_UINT64);
objdb->object_key_create_typed (object_connection_handle,
"closed", &zero_64, sizeof (zero_64),
OBJDB_VALUETYPE_UINT64);
}
static void main_low_fds_event(int32_t not_enough, int32_t fds_available)
{
corosync_not_enough_fds_left = not_enough;
if (not_enough) {
log_printf(LOGSYS_LEVEL_WARNING, "refusing new connections (fds_available:%d)\n",
fds_available);
} else {
log_printf(LOGSYS_LEVEL_NOTICE, "allowing new connections (fds_available:%d)\n",
fds_available);
}
}
static void main_service_ready (void)
{
int res;
/*
* This must occur after totempg is initialized because "this_ip" must be set
*/
res = corosync_service_defaults_link_and_init (api);
if (res == -1) {
log_printf (LOGSYS_LEVEL_ERROR, "Could not initialize default services\n");
corosync_exit_error (AIS_DONE_INIT_SERVICES);
}
evil_init (api);
corosync_stats_init ();
corosync_totem_stats_init ();
corosync_fplay_control_init ();
if (minimum_sync_mode == CS_SYNC_V2) {
log_printf (LOGSYS_LEVEL_NOTICE, "Compatibility mode set to none. Using V2 of the synchronization engine.\n");
sync_v2_init (
corosync_sync_v2_callbacks_retrieve,
corosync_sync_completed);
} else
if (minimum_sync_mode == CS_SYNC_V1) {
log_printf (LOGSYS_LEVEL_NOTICE, "Compatibility mode set to whitetank. Using V1 and V2 of the synchronization engine.\n");
sync_register (
corosync_sync_callbacks_retrieve,
sync_v2_memb_list_determine,
sync_v2_memb_list_abort,
sync_v2_start);
sync_v2_init (
corosync_sync_v2_callbacks_retrieve,
corosync_sync_completed);
}
}
static enum e_ais_done corosync_flock (const char *lockfile, pid_t pid)
{
struct flock lock;
enum e_ais_done err;
char pid_s[17];
int fd_flag;
int lf;
err = AIS_DONE_EXIT;
lf = open (lockfile, O_WRONLY | O_CREAT, 0640);
if (lf == -1) {
log_printf (LOGSYS_LEVEL_ERROR, "Corosync Executive couldn't create lock file.\n");
return (AIS_DONE_AQUIRE_LOCK);
}
retry_fcntl:
lock.l_type = F_WRLCK;
lock.l_start = 0;
lock.l_whence = SEEK_SET;
lock.l_len = 0;
if (fcntl (lf, F_SETLK, &lock) == -1) {
switch (errno) {
case EINTR:
goto retry_fcntl;
break;
case EAGAIN:
case EACCES:
log_printf (LOGSYS_LEVEL_ERROR, "Another Corosync instance is already running.\n");
err = AIS_DONE_ALREADY_RUNNING;
goto error_close;
break;
default:
log_printf (LOGSYS_LEVEL_ERROR, "Corosync Executive couldn't aquire lock. Error was %s\n",
strerror(errno));
err = AIS_DONE_AQUIRE_LOCK;
goto error_close;
break;
}
}
if (ftruncate (lf, 0) == -1) {
log_printf (LOGSYS_LEVEL_ERROR, "Corosync Executive couldn't truncate lock file. Error was %s\n",
strerror (errno));
err = AIS_DONE_AQUIRE_LOCK;
goto error_close_unlink;
}
memset (pid_s, 0, sizeof (pid_s));
snprintf (pid_s, sizeof (pid_s) - 1, "%u\n", pid);
retry_write:
if (write (lf, pid_s, strlen (pid_s)) != strlen (pid_s)) {
if (errno == EINTR) {
goto retry_write;
} else {
log_printf (LOGSYS_LEVEL_ERROR, "Corosync Executive couldn't write pid to lock file. "
"Error was %s\n", strerror (errno));
err = AIS_DONE_AQUIRE_LOCK;
goto error_close_unlink;
}
}
if ((fd_flag = fcntl (lf, F_GETFD, 0)) == -1) {
log_printf (LOGSYS_LEVEL_ERROR, "Corosync Executive couldn't get close-on-exec flag from lock file. "
"Error was %s\n", strerror (errno));
err = AIS_DONE_AQUIRE_LOCK;
goto error_close_unlink;
}
fd_flag |= FD_CLOEXEC;
if (fcntl (lf, F_SETFD, fd_flag) == -1) {
log_printf (LOGSYS_LEVEL_ERROR, "Corosync Executive couldn't set close-on-exec flag to lock file. "
"Error was %s\n", strerror (errno));
err = AIS_DONE_AQUIRE_LOCK;
goto error_close_unlink;
}
return (err);
error_close_unlink:
unlink (lockfile);
error_close:
close (lf);
return (err);
}
int main (int argc, char **argv, char **envp)
{
const char *error_string;
struct totem_config totem_config;
hdb_handle_t objdb_handle;
hdb_handle_t config_handle;
unsigned int config_version = 0;
void *objdb_p;
struct config_iface_ver0 *config;
void *config_p;
const char *config_iface_init;
char *config_iface;
char *iface;
char *strtok_save_pt;
int res, ch;
int background, setprio;
struct stat stat_out;
char corosync_lib_dir[PATH_MAX];
hdb_handle_t object_runtime_handle;
enum e_ais_done flock_err;
struct scheduler_pause_timeout_data scheduler_pause_timeout_data;
/* default configuration
*/
background = 1;
setprio = 1;
while ((ch = getopt (argc, argv, "fpv")) != EOF) {
switch (ch) {
case 'f':
background = 0;
logsys_config_mode_set (NULL, LOGSYS_MODE_OUTPUT_STDERR|LOGSYS_MODE_THREADED|LOGSYS_MODE_FORK);
break;
case 'p':
setprio = 0;
break;
case 'v':
printf ("Corosync Cluster Engine, version '%s'\n", VERSION);
printf ("Copyright (c) 2006-2009 Red Hat, Inc.\n");
return EXIT_SUCCESS;
break;
default:
fprintf(stderr, \
"usage:\n"\
" -f : Start application in foreground.\n"\
" -p : Do not set process priority. \n"\
" -v : Display version and SVN revision of Corosync and exit.\n");
return EXIT_FAILURE;
}
}
/*
* Set round robin realtime scheduling with priority 99
* Lock all memory to avoid page faults which may interrupt
* application healthchecking
*/
if (setprio) {
corosync_setscheduler ();
}
corosync_mlockall ();
log_printf (LOGSYS_LEVEL_NOTICE, "Corosync Cluster Engine ('%s'): started and ready to provide service.\n", VERSION);
log_printf (LOGSYS_LEVEL_INFO, "Corosync built-in features:" PACKAGE_FEATURES "\n");
(void)signal (SIGINT, sigintr_handler);
(void)signal (SIGUSR2, sigusr2_handler);
(void)signal (SIGSEGV, sigsegv_handler);
(void)signal (SIGABRT, sigabrt_handler);
(void)signal (SIGQUIT, sigquit_handler);
(void)signal (SIGTERM, sigterm_handler);
#if MSG_NOSIGNAL != 0
(void)signal (SIGPIPE, SIG_IGN);
#endif
/*
* Load the object database interface
*/
res = lcr_ifact_reference (
&objdb_handle,
"objdb",
0,
&objdb_p,
0);
if (res == -1) {
log_printf (LOGSYS_LEVEL_ERROR, "Corosync Executive couldn't open configuration object database component.\n");
corosync_exit_error (AIS_DONE_OBJDB);
}
objdb = (struct objdb_iface_ver0 *)objdb_p;
objdb->objdb_init ();
/*
* Initialize the corosync_api_v1 definition
*/
apidef_init (objdb);
api = apidef_get ();
num_config_modules = 0;
/*
* Bootstrap in the default configuration parser or use
* the corosync default built in parser if the configuration parser
* isn't overridden
*/
config_iface_init = getenv("COROSYNC_DEFAULT_CONFIG_IFACE");
if (!config_iface_init) {
config_iface_init = "corosync_parser";
}
/* Make a copy so we can deface it with strtok */
if ((config_iface = strdup(config_iface_init)) == NULL) {
log_printf (LOGSYS_LEVEL_ERROR, "exhausted virtual memory");
corosync_exit_error (AIS_DONE_OBJDB);
}
iface = strtok_r(config_iface, ":", &strtok_save_pt);
while (iface)
{
res = lcr_ifact_reference (
&config_handle,
iface,
config_version,
&config_p,
0);
config = (struct config_iface_ver0 *)config_p;
if (res == -1) {
log_printf (LOGSYS_LEVEL_ERROR, "Corosync Executive couldn't open configuration component '%s'\n", iface);
corosync_exit_error (AIS_DONE_MAINCONFIGREAD);
}
res = config->config_readconfig(objdb, &error_string);
if (res == -1) {
log_printf (LOGSYS_LEVEL_ERROR, "%s", error_string);
corosync_exit_error (AIS_DONE_MAINCONFIGREAD);
}
log_printf (LOGSYS_LEVEL_NOTICE, "%s", error_string);
config_modules[num_config_modules++] = config;
iface = strtok_r(NULL, ":", &strtok_save_pt);
}
free(config_iface);
res = corosync_main_config_read (objdb, &error_string);
if (res == -1) {
/*
* if we are here, we _must_ flush the logsys queue
* and try to inform that we couldn't read the config.
* this is a desperate attempt before certain death
* and there is no guarantee that we can print to stderr
* nor that logsys is sending the messages where we expect.
*/
log_printf (LOGSYS_LEVEL_ERROR, "%s", error_string);
fprintf(stderr, "%s", error_string);
syslog (LOGSYS_LEVEL_ERROR, "%s", error_string);
corosync_exit_error (AIS_DONE_MAINCONFIGREAD);
}
/*
* Make sure required directory is present
*/
sprintf (corosync_lib_dir, "%s/lib/corosync", LOCALSTATEDIR);
res = stat (corosync_lib_dir, &stat_out);
if ((res == -1) || (res == 0 && !S_ISDIR(stat_out.st_mode))) {
log_printf (LOGSYS_LEVEL_ERROR, "Required directory not present %s. Please create it.\n", corosync_lib_dir);
corosync_exit_error (AIS_DONE_DIR_NOT_PRESENT);
}
res = totem_config_read (objdb, &totem_config, &error_string);
if (res == -1) {
log_printf (LOGSYS_LEVEL_ERROR, "%s", error_string);
corosync_exit_error (AIS_DONE_MAINCONFIGREAD);
}
res = totem_config_keyread (objdb, &totem_config, &error_string);
if (res == -1) {
log_printf (LOGSYS_LEVEL_ERROR, "%s", error_string);
corosync_exit_error (AIS_DONE_MAINCONFIGREAD);
}
res = totem_config_validate (&totem_config, &error_string);
if (res == -1) {
log_printf (LOGSYS_LEVEL_ERROR, "%s", error_string);
corosync_exit_error (AIS_DONE_MAINCONFIGREAD);
}
totem_config.totem_logging_configuration = totem_logging_configuration;
totem_config.totem_logging_configuration.log_subsys_id =
_logsys_subsys_create ("TOTEM");
if (totem_config.totem_logging_configuration.log_subsys_id < 0) {
log_printf (LOGSYS_LEVEL_ERROR,
"Unable to initialize TOTEM logging subsystem\n");
corosync_exit_error (AIS_DONE_MAINCONFIGREAD);
}
totem_config.totem_logging_configuration.log_level_security = LOGSYS_LEVEL_WARNING;
totem_config.totem_logging_configuration.log_level_error = LOGSYS_LEVEL_ERROR;
totem_config.totem_logging_configuration.log_level_warning = LOGSYS_LEVEL_WARNING;
totem_config.totem_logging_configuration.log_level_notice = LOGSYS_LEVEL_NOTICE;
totem_config.totem_logging_configuration.log_level_debug = LOGSYS_LEVEL_DEBUG;
totem_config.totem_logging_configuration.log_printf = _logsys_log_printf;
res = corosync_main_config_compatibility_read (objdb,
&minimum_sync_mode,
&error_string);
if (res == -1) {
log_printf (LOGSYS_LEVEL_ERROR, "%s", error_string);
corosync_exit_error (AIS_DONE_MAINCONFIGREAD);
}
/* create the main runtime object */
objdb->object_create (OBJECT_PARENT_HANDLE,
&object_runtime_handle,
"runtime", strlen ("runtime"));
/*
* Now we are fully initialized.
*/
if (background) {
corosync_tty_detach ();
}
logsys_fork_completed();
corosync_timer_init (
serialize_lock,
serialize_unlock,
sched_priority);
corosync_poll_handle = poll_create ();
poll_low_fds_event_set(corosync_poll_handle, main_low_fds_event);
memset(&scheduler_pause_timeout_data, 0, sizeof(scheduler_pause_timeout_data));
scheduler_pause_timeout_data.totem_config = &totem_config;
timer_function_scheduler_timeout (&scheduler_pause_timeout_data);
/*
* Create exit pipe
*/
res = pipe(corosync_exit_pipe);
if (res == 0) {
res = poll_dispatch_add(corosync_poll_handle, corosync_exit_pipe[0],
POLLIN, NULL, corosync_exit_dispatch_fn);
}
if (res != 0) {
log_printf (LOGSYS_LEVEL_ERROR, "Corosync Executive couldn't create exit pipe.\n");
corosync_exit_error (AIS_DONE_FATAL_ERR);
}
if ((flock_err = corosync_flock (corosync_lock_file, getpid ())) != AIS_DONE_EXIT) {
corosync_exit_error (flock_err);
}
/*
* if totempg_initialize doesn't have root priveleges, it cannot
* bind to a specific interface. This only matters if
* there is more then one interface in a system, so
* in this case, only a warning is printed
*/
/*
* Join multicast group and setup delivery
* and configuration change functions
*/
totempg_initialize (
corosync_poll_handle,
&totem_config);
totempg_service_ready_register (
main_service_ready);
totempg_groups_initialize (
&corosync_group_handle,
deliver_fn,
confchg_fn);
totempg_groups_join (
corosync_group_handle,
&corosync_group,
1);
/*
* Drop root privleges to user 'ais'
* TODO: Don't really need full root capabilities;
* needed capabilities are:
* CAP_NET_RAW (bindtodevice)
* CAP_SYS_NICE (setscheduler)
* CAP_IPC_LOCK (mlockall)
*/
priv_drop ();
schedwrk_init (
serialize_lock,
serialize_unlock);
ipc_subsys_id = _logsys_subsys_create ("IPC");
if (ipc_subsys_id < 0) {
log_printf (LOGSYS_LEVEL_ERROR,
"Could not initialize IPC logging subsystem\n");
corosync_exit_error (AIS_DONE_INIT_SERVICES);
}
ipc_init_state_v2.log_subsys_id = ipc_subsys_id;
coroipcs_ipc_init_v2 (&ipc_init_state_v2);
/*
* Start main processing loop
*/
poll_run (corosync_poll_handle);
/*
* Exit was requested
*/
totempg_finalize ();
/*
* Remove pid lock file
*/
unlink (corosync_lock_file);
corosync_exit_error (AIS_DONE_EXIT);
return EXIT_SUCCESS;
}

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