vsf_quorum.c
Go to the documentation of this file.
/*
* Copyright (c) 2008-2020 Red Hat, Inc.
*
* All rights reserved.
*
* Author: Christine Caulfield (ccaulfie@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 Red Hat 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 <pwd.h>
#include <grp.h>
#include <sys/types.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 <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <sched.h>
#include <time.h>
#include "quorum.h"
#include <corosync/corotypes.h>
#include <qb/qbipc_common.h>
#include <corosync/corodefs.h>
#include <corosync/swab.h>
#include <qb/qblist.h>
#include <corosync/mar_gen.h>
#include <corosync/ipc_quorum.h>
#include <corosync/coroapi.h>
#include <corosync/logsys.h>
#include <corosync/icmap.h>
#include "service.h"
#include "votequorum.h"
#include "vsf_ykd.h"
LOGSYS_DECLARE_SUBSYS ("QUORUM");
struct quorum_pd {
unsigned char track_flags;
int tracking_enabled;
struct qb_list_head list;
void *conn;
enum lib_quorum_model model;
};
struct internal_callback_pd {
struct qb_list_head list;
quorum_callback_fn_t callback;
void *context;
};
static void quorum_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);
static int quorum_sync_process (void);
static void quorum_sync_activate (void);
static void quorum_sync_abort (void);
static void message_handler_req_lib_quorum_getquorate (void *conn,
const void *msg);
static void message_handler_req_lib_quorum_trackstart (void *conn,
const void *msg);
static void message_handler_req_lib_quorum_trackstop (void *conn,
const void *msg);
static void message_handler_req_lib_quorum_gettype (void *conn,
const void *msg);
static void message_handler_req_lib_quorum_model_gettype (void *conn,
const void *msg);
static void send_library_notification(void *conn);
static void send_internal_notification(void);
static void send_nodelist_library_notification(void *conn, int send_joined_left_list);
static char *quorum_exec_init_fn (struct corosync_api_v1 *api);
static int quorum_lib_init_fn (void *conn);
static int quorum_lib_exit_fn (void *conn);
static int primary_designated = 0;
static int quorum_type = 0;
static struct corosync_api_v1 *corosync_api;
static struct qb_list_head lib_trackers_list;
static struct qb_list_head internal_trackers_list;
static struct memb_ring_id quorum_ring_id;
static struct memb_ring_id last_sync_ring_id;
static size_t quorum_view_list_entries = 0;
static int quorum_view_list[PROCESSOR_COUNT_MAX];
struct quorum_services_api_ver1 *quorum_iface = NULL;
static char view_buf[64];
static unsigned int my_member_list[PROCESSOR_COUNT_MAX];
static size_t my_member_list_entries;
static unsigned int my_old_member_list[PROCESSOR_COUNT_MAX];
static size_t my_old_member_list_entries = 0;
static unsigned int my_left_list[PROCESSOR_COUNT_MAX];
static size_t my_left_list_entries;
static unsigned int my_joined_list[PROCESSOR_COUNT_MAX];
static size_t my_joined_list_entries;
static void log_view_list(const unsigned int *view_list, size_t view_list_entries,
const char *view_list_type_str)
{
int total = (int)view_list_entries;
int len, pos, ret;
int i = 0;
while (1) {
len = sizeof(view_buf);
pos = 0;
memset(view_buf, 0, len);
for (; i < total; i++) {
ret = snprintf(view_buf + pos, len - pos, " " CS_PRI_NODE_ID, view_list[i]);
if (ret >= len - pos)
break;
pos += ret;
}
log_printf (LOGSYS_LEVEL_NOTICE, "%s[%d]:%s%s",
view_list_type_str, total, view_buf, i < total ? "\\" : "");
if (i == total)
break;
}
}
/* Internal quorum API function */
static void quorum_api_set_quorum(const unsigned int *view_list,
size_t view_list_entries,
int quorum, struct memb_ring_id *ring_id)
{
int old_quorum = primary_designated;
primary_designated = quorum;
if (primary_designated && !old_quorum) {
log_printf (LOGSYS_LEVEL_NOTICE, "This node is within the primary component and will provide service.");
} else if (!primary_designated && old_quorum) {
log_printf (LOGSYS_LEVEL_NOTICE, "This node is within the non-primary component and will NOT provide any services.");
}
quorum_view_list_entries = view_list_entries;
memcpy(&quorum_ring_id, ring_id, sizeof (quorum_ring_id));
memcpy(quorum_view_list, view_list, sizeof(unsigned int)*view_list_entries);
log_view_list(view_list, view_list_entries, "Members");
/* Tell internal listeners */
send_internal_notification();
/* Tell IPC listeners */
send_library_notification(NULL);
}
static struct corosync_lib_handler quorum_lib_service[] =
{
{ /* 0 */
.lib_handler_fn = message_handler_req_lib_quorum_getquorate,
.flow_control = CS_LIB_FLOW_CONTROL_NOT_REQUIRED
},
{ /* 1 */
.lib_handler_fn = message_handler_req_lib_quorum_trackstart,
.flow_control = CS_LIB_FLOW_CONTROL_NOT_REQUIRED
},
{ /* 2 */
.lib_handler_fn = message_handler_req_lib_quorum_trackstop,
.flow_control = CS_LIB_FLOW_CONTROL_NOT_REQUIRED
},
{ /* 3 */
.lib_handler_fn = message_handler_req_lib_quorum_gettype,
.flow_control = CS_LIB_FLOW_CONTROL_NOT_REQUIRED
},
{ /* 4 */
.lib_handler_fn = message_handler_req_lib_quorum_model_gettype,
.flow_control = CS_LIB_FLOW_CONTROL_NOT_REQUIRED
}
};
static struct corosync_service_engine quorum_service_handler = {
.name = "corosync cluster quorum service v0.1",
.id = QUORUM_SERVICE,
.priority = 1,
.private_data_size = sizeof (struct quorum_pd),
.flow_control = CS_LIB_FLOW_CONTROL_NOT_REQUIRED,
.allow_inquorate = CS_LIB_ALLOW_INQUORATE,
.lib_init_fn = quorum_lib_init_fn,
.lib_exit_fn = quorum_lib_exit_fn,
.lib_engine = quorum_lib_service,
.exec_init_fn = quorum_exec_init_fn,
.sync_init = quorum_sync_init,
.sync_process = quorum_sync_process,
.sync_activate = quorum_sync_activate,
.sync_abort = quorum_sync_abort,
.lib_engine_count = sizeof (quorum_lib_service) / sizeof (struct corosync_lib_handler)
};
struct corosync_service_engine *vsf_quorum_get_service_engine_ver0 (void)
{
return (&quorum_service_handler);
}
/* -------------------------------------------------- */
/*
* Internal API functions for corosync
*/
static int quorum_quorate(void)
{
return primary_designated;
}
static int quorum_register_callback(quorum_callback_fn_t function, void *context)
{
struct internal_callback_pd *pd = malloc(sizeof(struct internal_callback_pd));
if (!pd)
return -1;
pd->context = context;
pd->callback = function;
qb_list_add (&pd->list, &internal_trackers_list);
return 0;
}
static int quorum_unregister_callback(quorum_callback_fn_t function, void *context)
{
struct internal_callback_pd *pd;
struct qb_list_head *tmp, *tmp_iter;
qb_list_for_each_safe(tmp, tmp_iter, &internal_trackers_list) {
pd = qb_list_entry(tmp, struct internal_callback_pd, list);
if (pd->callback == function && pd->context == context) {
qb_list_del(&pd->list);
free(pd);
return 0;
}
}
return -1;
}
static struct quorum_callin_functions callins = {
.quorate = quorum_quorate,
.register_callback = quorum_register_callback,
.unregister_callback = quorum_unregister_callback
};
/* --------------------------------------------------------------------- */
static void quorum_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)
{
int found;
int i, j;
int entries;
int node_joined;
memcpy (my_member_list, member_list, member_list_entries *
sizeof (unsigned int));
my_member_list_entries = member_list_entries;
last_sync_ring_id = *ring_id;
/*
* Determine left list of nodeids
*/
entries = 0;
for (i = 0; i < my_old_member_list_entries; i++) {
found = 0;
for (j = 0; j < trans_list_entries; j++) {
if (my_old_member_list[i] == trans_list[j]) {
found = 1;
break;
}
}
if (found == 0) {
my_left_list[entries++] = my_old_member_list[i];
} else {
/*
* Check it is really in new membership
*/
found = 0;
for (j = 0; j < my_member_list_entries; j++) {
if (my_old_member_list[i] == my_member_list[j]) {
found = 1;
break;
}
}
/*
* Node is in both old_member_list and trans list but not in my_member_list.
* (This shouldn't really happen).
*/
if (!found) {
my_left_list[entries++] = my_old_member_list[i];
}
}
}
my_left_list_entries = entries;
/*
* Determine joined list of nodeids
*/
entries = 0;
for (i = 0; i < my_member_list_entries; i++) {
node_joined = 1;
for (j = 0; j < my_old_member_list_entries; j++) {
if (my_member_list[i] == my_old_member_list[j]) {
/*
* Node is in member list and also in my_old_member list -> check
* if it is in left_list.
*/
node_joined = 0;
break;
}
}
if (!node_joined) {
/*
* Check if node is in left list.
*/
for (j = 0; j < my_left_list_entries; j++) {
if (my_member_list[i] == my_left_list[j]) {
/*
* Node is both in left and also in member list -> joined
*/
node_joined = 1;
break;
}
}
}
if (node_joined) {
my_joined_list[entries++] = my_member_list[i];
}
}
my_joined_list_entries = entries;
log_view_list(my_member_list, my_member_list_entries, "Sync members");
if (my_joined_list_entries > 0) {
log_view_list(my_joined_list, my_joined_list_entries, "Sync joined");
}
if (my_left_list_entries > 0) {
log_view_list(my_left_list, my_left_list_entries, "Sync left");
}
}
static int quorum_sync_process (void)
{
return (0);
}
static void quorum_sync_activate (void)
{
memcpy (my_old_member_list, my_member_list,
my_member_list_entries * sizeof (unsigned int));
my_old_member_list_entries = my_member_list_entries;
/* Tell IPC listeners */
send_nodelist_library_notification(NULL, 1);
}
static void quorum_sync_abort (void)
{
}
static char *quorum_exec_init_fn (struct corosync_api_v1 *api)
{
char *quorum_module = NULL;
char *error;
corosync_api = api;
qb_list_init (&lib_trackers_list);
qb_list_init (&internal_trackers_list);
/*
* Tell corosync we have a quorum engine.
*/
api->quorum_initialize(&callins);
/*
* Look for a quorum provider
*/
if (icmap_get_string("quorum.provider", &quorum_module) == CS_OK) {
log_printf (LOGSYS_LEVEL_NOTICE,
"Using quorum provider %s", quorum_module);
error = (char *)"Invalid quorum provider";
if (strcmp (quorum_module, "corosync_votequorum") == 0) {
error = votequorum_init (api, quorum_api_set_quorum);
quorum_type = 1;
}
if (strcmp (quorum_module, "corosync_ykd") == 0) {
error = ykd_init (api, quorum_api_set_quorum);
quorum_type = 1;
}
if (error) {
log_printf (LOGSYS_LEVEL_CRIT,
"Quorum provider: %s failed to initialize.",
quorum_module);
free(quorum_module);
return (error);
}
}
if (quorum_module) {
free(quorum_module);
quorum_module = NULL;
}
/*
* setting quorum_type and primary_designated in the right order is important
* always try to lookup/init a quorum module, then revert back to be quorate
*/
if (quorum_type == 0) {
primary_designated = 1;
}
return (NULL);
}
static int quorum_lib_init_fn (void *conn)
{
struct quorum_pd *pd = (struct quorum_pd *)corosync_api->ipc_private_data_get (conn);
log_printf(LOGSYS_LEVEL_DEBUG, "lib_init_fn: conn=%p", conn);
qb_list_init (&pd->list);
pd->conn = conn;
pd->model = LIB_QUORUM_MODEL_V0;
return (0);
}
static int quorum_lib_exit_fn (void *conn)
{
struct quorum_pd *quorum_pd = (struct quorum_pd *)corosync_api->ipc_private_data_get (conn);
log_printf(LOGSYS_LEVEL_DEBUG, "lib_exit_fn: conn=%p", conn);
if (quorum_pd->tracking_enabled) {
qb_list_del (&quorum_pd->list);
qb_list_init (&quorum_pd->list);
}
return (0);
}
static void send_internal_notification(void)
{
struct qb_list_head *tmp;
struct internal_callback_pd *pd;
qb_list_for_each(tmp, &internal_trackers_list) {
pd = qb_list_entry(tmp, struct internal_callback_pd, list);
pd->callback(primary_designated, pd->context);
}
}
static void prepare_library_notification_v0(char *buf, size_t size)
{
struct res_lib_quorum_notification *res_lib_quorum_notification = (struct res_lib_quorum_notification *)buf;
int i;
res_lib_quorum_notification->quorate = primary_designated;
res_lib_quorum_notification->ring_seq = quorum_ring_id.seq;
res_lib_quorum_notification->view_list_entries = quorum_view_list_entries;
for (i=0; i<quorum_view_list_entries; i++) {
res_lib_quorum_notification->view_list[i] = quorum_view_list[i];
}
res_lib_quorum_notification->header.id = MESSAGE_RES_QUORUM_NOTIFICATION;
res_lib_quorum_notification->header.size = size;
res_lib_quorum_notification->header.error = CS_OK;
}
static void prepare_library_notification_v1(char *buf, size_t size)
{
struct res_lib_quorum_v1_quorum_notification *res_lib_quorum_v1_quorum_notification =
(struct res_lib_quorum_v1_quorum_notification *)buf;
int i;
res_lib_quorum_v1_quorum_notification->quorate = primary_designated;
res_lib_quorum_v1_quorum_notification->ring_id.nodeid = quorum_ring_id.nodeid;
res_lib_quorum_v1_quorum_notification->ring_id.seq = quorum_ring_id.seq;
res_lib_quorum_v1_quorum_notification->view_list_entries = quorum_view_list_entries;
for (i=0; i<quorum_view_list_entries; i++) {
res_lib_quorum_v1_quorum_notification->view_list[i] = quorum_view_list[i];
}
res_lib_quorum_v1_quorum_notification->header.id = MESSAGE_RES_QUORUM_V1_QUORUM_NOTIFICATION;
res_lib_quorum_v1_quorum_notification->header.size = size;
res_lib_quorum_v1_quorum_notification->header.error = CS_OK;
}
static void send_library_notification(void *conn)
{
int size_v0 = sizeof(struct res_lib_quorum_notification) +
sizeof(mar_uint32_t) * quorum_view_list_entries;
int size_v1 = sizeof(struct res_lib_quorum_v1_quorum_notification) +
sizeof(mar_uint32_t)*quorum_view_list_entries;
char buf_v0[size_v0];
char buf_v1[size_v1];
struct res_lib_quorum_notification *res_lib_quorum_notification =
(struct res_lib_quorum_notification *)buf_v0;
struct res_lib_quorum_v1_quorum_notification *res_lib_quorum_v1_quorum_notification =
(struct res_lib_quorum_v1_quorum_notification *)buf_v1;
struct quorum_pd *qpd;
struct qb_list_head *tmp;
log_printf(LOGSYS_LEVEL_DEBUG, "sending quorum notification to %p, length = %u/%u", conn, size_v0, size_v1);
prepare_library_notification_v0(buf_v0, size_v0);
prepare_library_notification_v1(buf_v1, size_v1);
/* Send it to all interested parties */
if (conn) {
qpd = (struct quorum_pd *)corosync_api->ipc_private_data_get (conn);
if (qpd->model == LIB_QUORUM_MODEL_V0) {
corosync_api->ipc_dispatch_send(conn, res_lib_quorum_notification, size_v0);
} else if (qpd->model == LIB_QUORUM_MODEL_V1) {
corosync_api->ipc_dispatch_send(conn, res_lib_quorum_v1_quorum_notification, size_v1);
}
}
else {
qb_list_for_each(tmp, &lib_trackers_list) {
qpd = qb_list_entry(tmp, struct quorum_pd, list);
if (qpd->model == LIB_QUORUM_MODEL_V0) {
corosync_api->ipc_dispatch_send(qpd->conn,
res_lib_quorum_notification, size_v0);
} else if (qpd->model == LIB_QUORUM_MODEL_V1) {
corosync_api->ipc_dispatch_send(qpd->conn,
res_lib_quorum_v1_quorum_notification, size_v1);
}
}
}
return;
}
static void send_nodelist_library_notification(void *conn, int send_joined_left_list)
{
int size = sizeof(struct res_lib_quorum_v1_nodelist_notification) +
sizeof(mar_uint32_t) * my_member_list_entries;
char *buf;
struct res_lib_quorum_v1_nodelist_notification *res_lib_quorum_v1_nodelist_notification;
struct quorum_pd *qpd;
struct qb_list_head *tmp;
mar_uint32_t *ptr;
int i;
if (send_joined_left_list) {
size += sizeof(mar_uint32_t) * my_joined_list_entries;
size += sizeof(mar_uint32_t) * my_left_list_entries;
}
buf = alloca(size);
memset(buf, 0, size);
res_lib_quorum_v1_nodelist_notification = (struct res_lib_quorum_v1_nodelist_notification *)buf;
res_lib_quorum_v1_nodelist_notification->ring_id.nodeid = last_sync_ring_id.nodeid;
res_lib_quorum_v1_nodelist_notification->ring_id.seq = last_sync_ring_id.seq;
res_lib_quorum_v1_nodelist_notification->member_list_entries = my_member_list_entries;
if (send_joined_left_list) {
res_lib_quorum_v1_nodelist_notification->joined_list_entries = my_joined_list_entries;
res_lib_quorum_v1_nodelist_notification->left_list_entries = my_left_list_entries;
}
ptr = res_lib_quorum_v1_nodelist_notification->member_list;
for (i=0; i<my_member_list_entries; i++, ptr++) {
*ptr = my_member_list[i];
}
if (send_joined_left_list) {
for (i=0; i<my_joined_list_entries; i++, ptr++) {
*ptr = my_joined_list[i];
}
for (i=0; i<my_left_list_entries; i++, ptr++) {
*ptr = my_left_list[i];
}
}
res_lib_quorum_v1_nodelist_notification->header.id = MESSAGE_RES_QUORUM_V1_NODELIST_NOTIFICATION;
res_lib_quorum_v1_nodelist_notification->header.size = size;
res_lib_quorum_v1_nodelist_notification->header.error = CS_OK;
log_printf(LOGSYS_LEVEL_DEBUG, "sending nodelist notification to %p, length = %u", conn, size);
/* Send it to all interested parties */
if (conn) {
qpd = (struct quorum_pd *)corosync_api->ipc_private_data_get (conn);
if (qpd->model == LIB_QUORUM_MODEL_V1) {
corosync_api->ipc_dispatch_send(conn, res_lib_quorum_v1_nodelist_notification, size);
}
}
else {
qb_list_for_each(tmp, &lib_trackers_list) {
qpd = qb_list_entry(tmp, struct quorum_pd, list);
if (qpd->model == LIB_QUORUM_MODEL_V1) {
corosync_api->ipc_dispatch_send(qpd->conn,
res_lib_quorum_v1_nodelist_notification, size);
}
}
}
return;
}
static void message_handler_req_lib_quorum_getquorate (void *conn,
const void *msg)
{
struct res_lib_quorum_getquorate res_lib_quorum_getquorate;
log_printf(LOGSYS_LEVEL_DEBUG, "got quorate request on %p", conn);
/* send status */
res_lib_quorum_getquorate.quorate = primary_designated;
res_lib_quorum_getquorate.header.size = sizeof(res_lib_quorum_getquorate);
res_lib_quorum_getquorate.header.id = MESSAGE_RES_QUORUM_GETQUORATE;
res_lib_quorum_getquorate.header.error = CS_OK;
corosync_api->ipc_response_send(conn, &res_lib_quorum_getquorate, sizeof(res_lib_quorum_getquorate));
}
static void message_handler_req_lib_quorum_trackstart (void *conn,
const void *msg)
{
const struct req_lib_quorum_trackstart *req_lib_quorum_trackstart = msg;
struct qb_ipc_response_header res;
struct quorum_pd *quorum_pd = (struct quorum_pd *)corosync_api->ipc_private_data_get (conn);
cs_error_t error = CS_OK;
log_printf(LOGSYS_LEVEL_DEBUG, "got trackstart request on %p", conn);
/*
* If an immediate listing of the current cluster membership
* is requested, generate membership list
*/
if (req_lib_quorum_trackstart->track_flags & CS_TRACK_CURRENT ||
req_lib_quorum_trackstart->track_flags & CS_TRACK_CHANGES) {
log_printf(LOGSYS_LEVEL_DEBUG, "sending initial status to %p", conn);
send_nodelist_library_notification(conn, 0);
send_library_notification(conn);
}
if (quorum_pd->tracking_enabled) {
error = CS_ERR_EXIST;
goto response_send;
}
/*
* Record requests for tracking
*/
if (req_lib_quorum_trackstart->track_flags & CS_TRACK_CHANGES ||
req_lib_quorum_trackstart->track_flags & CS_TRACK_CHANGES_ONLY) {
quorum_pd->track_flags = req_lib_quorum_trackstart->track_flags;
quorum_pd->tracking_enabled = 1;
qb_list_add (&quorum_pd->list, &lib_trackers_list);
}
response_send:
/* send status */
res.size = sizeof(res);
res.id = MESSAGE_RES_QUORUM_TRACKSTART;
res.error = error;
corosync_api->ipc_response_send(conn, &res, sizeof(struct qb_ipc_response_header));
}
static void message_handler_req_lib_quorum_trackstop (void *conn, const void *msg)
{
struct qb_ipc_response_header res;
struct quorum_pd *quorum_pd = (struct quorum_pd *)corosync_api->ipc_private_data_get (conn);
log_printf(LOGSYS_LEVEL_DEBUG, "got trackstop request on %p", conn);
if (quorum_pd->tracking_enabled) {
res.error = CS_OK;
quorum_pd->tracking_enabled = 0;
qb_list_del (&quorum_pd->list);
qb_list_init (&quorum_pd->list);
} else {
res.error = CS_ERR_NOT_EXIST;
}
/* send status */
res.size = sizeof(res);
res.id = MESSAGE_RES_QUORUM_TRACKSTOP;
res.error = CS_OK;
corosync_api->ipc_response_send(conn, &res, sizeof(struct qb_ipc_response_header));
}
static void message_handler_req_lib_quorum_gettype (void *conn,
const void *msg)
{
struct res_lib_quorum_gettype res_lib_quorum_gettype;
log_printf(LOGSYS_LEVEL_DEBUG, "got quorum_type request on %p", conn);
/* send status */
res_lib_quorum_gettype.quorum_type = quorum_type;
res_lib_quorum_gettype.header.size = sizeof(res_lib_quorum_gettype);
res_lib_quorum_gettype.header.id = MESSAGE_RES_QUORUM_GETTYPE;
res_lib_quorum_gettype.header.error = CS_OK;
corosync_api->ipc_response_send(conn, &res_lib_quorum_gettype, sizeof(res_lib_quorum_gettype));
}
static void message_handler_req_lib_quorum_model_gettype (void *conn,
const void *msg)
{
const struct req_lib_quorum_model_gettype *req_lib_quorum_model_gettype = msg;
struct res_lib_quorum_model_gettype res_lib_quorum_model_gettype;
struct quorum_pd *quorum_pd = (struct quorum_pd *)corosync_api->ipc_private_data_get (conn);
cs_error_t ret_err;
log_printf(LOGSYS_LEVEL_DEBUG, "got quorum_model_type request on %p", conn);
ret_err = CS_OK;
if (req_lib_quorum_model_gettype->model != LIB_QUORUM_MODEL_V0 &&
req_lib_quorum_model_gettype->model != LIB_QUORUM_MODEL_V1) {
log_printf(LOGSYS_LEVEL_ERROR, "quorum_model_type request for unsupported model %u",
req_lib_quorum_model_gettype->model);
ret_err = CS_ERR_INVALID_PARAM;
} else {
quorum_pd->model = req_lib_quorum_model_gettype->model;
}
/* send status */
res_lib_quorum_model_gettype.quorum_type = quorum_type;
res_lib_quorum_model_gettype.header.size = sizeof(res_lib_quorum_model_gettype);
res_lib_quorum_model_gettype.header.id = MESSAGE_RES_QUORUM_MODEL_GETTYPE;
res_lib_quorum_model_gettype.header.error = ret_err;
corosync_api->ipc_response_send(conn, &res_lib_quorum_model_gettype, sizeof(res_lib_quorum_model_gettype));
}
config.h
coroapi.h
CS_LIB_ALLOW_INQUORATE
@ CS_LIB_ALLOW_INQUORATE
Definition coroapi.h:164
nodeid
unsigned int nodeid
Definition coroapi.h:0
quorum_callback_fn_t
void(* quorum_callback_fn_t)(int quorate, void *context)
The quorum_callback_fn_t callback.
Definition coroapi.h:199
CS_LIB_FLOW_CONTROL_NOT_REQUIRED
@ CS_LIB_FLOW_CONTROL_NOT_REQUIRED
Definition coroapi.h:153
PROCESSOR_COUNT_MAX
#define PROCESSOR_COUNT_MAX
Definition coroapi.h:96
corodefs.h
QUORUM_SERVICE
@ QUORUM_SERVICE
Definition corodefs.h:47
corotypes.h
CS_TRACK_CURRENT
#define CS_TRACK_CURRENT
Definition corotypes.h:91
CS_PRI_NODE_ID
#define CS_PRI_NODE_ID
Definition corotypes.h:59
CS_TRACK_CHANGES
#define CS_TRACK_CHANGES
Definition corotypes.h:92
CS_TRACK_CHANGES_ONLY
#define CS_TRACK_CHANGES_ONLY
Definition corotypes.h:93
cs_error_t
cs_error_t
The cs_error_t enum.
Definition corotypes.h:98
CS_OK
@ CS_OK
Definition corotypes.h:99
CS_ERR_INVALID_PARAM
@ CS_ERR_INVALID_PARAM
Definition corotypes.h:105
CS_ERR_NOT_EXIST
@ CS_ERR_NOT_EXIST
Definition corotypes.h:110
CS_ERR_EXIST
@ CS_ERR_EXIST
Definition corotypes.h:112
votequorum_init
char * votequorum_init(struct corosync_api_v1 *api, quorum_set_quorate_fn_t q_set_quorate_fn)
Definition exec/votequorum.c:2486
icmap.h
icmap_get_string
cs_error_t icmap_get_string(const char *key_name, char **str)
Shortcut for icmap_get for string type.
Definition icmap.c:856
quorum.h
votequorum.h
ipc_quorum.h
MESSAGE_RES_QUORUM_TRACKSTART
@ MESSAGE_RES_QUORUM_TRACKSTART
Definition ipc_quorum.h:56
MESSAGE_RES_QUORUM_V1_QUORUM_NOTIFICATION
@ MESSAGE_RES_QUORUM_V1_QUORUM_NOTIFICATION
Definition ipc_quorum.h:61
MESSAGE_RES_QUORUM_TRACKSTOP
@ MESSAGE_RES_QUORUM_TRACKSTOP
Definition ipc_quorum.h:57
MESSAGE_RES_QUORUM_V1_NODELIST_NOTIFICATION
@ MESSAGE_RES_QUORUM_V1_NODELIST_NOTIFICATION
Definition ipc_quorum.h:62
MESSAGE_RES_QUORUM_GETTYPE
@ MESSAGE_RES_QUORUM_GETTYPE
Definition ipc_quorum.h:59
MESSAGE_RES_QUORUM_NOTIFICATION
@ MESSAGE_RES_QUORUM_NOTIFICATION
Definition ipc_quorum.h:58
MESSAGE_RES_QUORUM_MODEL_GETTYPE
@ MESSAGE_RES_QUORUM_MODEL_GETTYPE
Definition ipc_quorum.h:60
MESSAGE_RES_QUORUM_GETQUORATE
@ MESSAGE_RES_QUORUM_GETQUORATE
Definition ipc_quorum.h:55
lib_quorum_model
lib_quorum_model
Definition ipc_quorum.h:68
LIB_QUORUM_MODEL_V1
@ LIB_QUORUM_MODEL_V1
Definition ipc_quorum.h:70
LIB_QUORUM_MODEL_V0
@ LIB_QUORUM_MODEL_V0
Definition ipc_quorum.h:69
logsys.h
LOGSYS_LEVEL_ERROR
#define LOGSYS_LEVEL_ERROR
Definition logsys.h:72
log_printf
#define log_printf(level, format, args...)
Definition logsys.h:332
LOGSYS_LEVEL_CRIT
#define LOGSYS_LEVEL_CRIT
Definition logsys.h:71
LOGSYS_LEVEL_NOTICE
#define LOGSYS_LEVEL_NOTICE
Definition logsys.h:74
LOGSYS_DECLARE_SUBSYS
#define LOGSYS_DECLARE_SUBSYS(subsys)
The LOGSYS_DECLARE_SUBSYS macro.
Definition logsys.h:306
LOGSYS_LEVEL_DEBUG
#define LOGSYS_LEVEL_DEBUG
Definition logsys.h:76
mar_gen.h
mar_uint32_t
uint32_t mar_uint32_t
Definition mar_gen.h:53
service.h
corosync_api_v1
The corosync_api_v1 struct.
Definition coroapi.h:225
corosync_api_v1::quorum_initialize
int(* quorum_initialize)(struct quorum_callin_functions *fns)
Definition coroapi.h:392
corosync_api_v1::ipc_private_data_get
void *(* ipc_private_data_get)(void *conn)
Definition coroapi.h:256
corosync_api_v1::ipc_dispatch_send
int(* ipc_dispatch_send)(void *conn, const void *msg, size_t mlen)
Definition coroapi.h:263
corosync_api_v1::ipc_response_send
int(* ipc_response_send)(void *conn, const void *msg, size_t mlen)
Definition coroapi.h:258
corosync_lib_handler
The corosync_lib_handler struct.
Definition coroapi.h:467
corosync_lib_handler::lib_handler_fn
void(* lib_handler_fn)(void *conn, const void *msg)
Definition coroapi.h:468
corosync_service_engine
The corosync_service_engine struct.
Definition coroapi.h:490
corosync_service_engine::name
const char * name
Definition coroapi.h:491
internal_callback_pd
Definition vsf_quorum.c:83
internal_callback_pd::context
void * context
Definition vsf_quorum.c:86
internal_callback_pd::list
struct qb_list_head list
Definition vsf_quorum.c:84
internal_callback_pd::callback
quorum_callback_fn_t callback
Definition vsf_quorum.c:85
memb_ring_id
The memb_ring_id struct.
Definition coroapi.h:122
memb_ring_id::seq
unsigned long long seq
Definition coroapi.h:124
memb_ring_id::nodeid
unsigned int nodeid
Definition coroapi.h:123
quorum_callin_functions
The quorum_callin_functions struct.
Definition coroapi.h:204
quorum_callin_functions::quorate
int(* quorate)(void)
Definition coroapi.h:205
quorum_pd
Definition exec/votequorum.c:223
quorum_pd::track_flags
unsigned char track_flags
Definition exec/votequorum.c:224
quorum_pd::model
enum lib_quorum_model model
Definition vsf_quorum.c:80
quorum_pd::conn
void * conn
Definition exec/votequorum.c:228
quorum_pd::tracking_enabled
int tracking_enabled
Definition exec/votequorum.c:225
quorum_pd::list
struct qb_list_head list
Definition exec/votequorum.c:227
quorum_ring_id
Definition include/corosync/quorum.h:53
quorum_ring_id::seq
uint64_t seq
Definition include/corosync/quorum.h:55
quorum_ring_id::nodeid
uint32_t nodeid
Definition include/corosync/quorum.h:54
req_lib_quorum_model_gettype
Definition ipc_quorum.h:132
req_lib_quorum_trackstart
The req_lib_quorum_trackstart struct.
Definition ipc_quorum.h:81
req_lib_quorum_trackstart::track_flags
unsigned int track_flags
Definition ipc_quorum.h:83
res_lib_quorum_getquorate
The res_lib_quorum_getquorate struct.
Definition ipc_quorum.h:89
res_lib_quorum_getquorate::quorate
mar_uint32_t quorate
Definition ipc_quorum.h:91
res_lib_quorum_gettype
The res_lib_quorum_gettype struct.
Definition ipc_quorum.h:127
res_lib_quorum_gettype::quorum_type
mar_uint32_t quorum_type
Definition ipc_quorum.h:129
res_lib_quorum_model_gettype
Definition ipc_quorum.h:137
res_lib_quorum_notification
The res_lib_quorum_notification struct.
Definition ipc_quorum.h:97
res_lib_quorum_notification::view_list
mar_uint32_t view_list[]
Definition ipc_quorum.h:102
res_lib_quorum_v1_nodelist_notification
Definition ipc_quorum.h:113
res_lib_quorum_v1_nodelist_notification::member_list
mar_uint32_t member_list[]
Definition ipc_quorum.h:119
res_lib_quorum_v1_quorum_notification
Definition ipc_quorum.h:105
res_lib_quorum_v1_quorum_notification::view_list
mar_uint32_t view_list[]
Definition ipc_quorum.h:110
swab.h
ring_id
struct memb_ring_id ring_id
Definition totemsrp.c:4
vsf_quorum_get_service_engine_ver0
struct corosync_service_engine * vsf_quorum_get_service_engine_ver0(void)
Definition vsf_quorum.c:236
quorum_iface
struct quorum_services_api_ver1 * quorum_iface
Definition vsf_quorum.c:128
ykd_init
char * ykd_init(struct corosync_api_v1 *corosync_api, quorum_set_quorate_fn_t set_primary)
Definition vsf_ykd.c:511
vsf_ykd.h