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-rw-r--r--exec/vsf_quorum.c801
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diff --git a/exec/vsf_quorum.c b/exec/vsf_quorum.c
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+++ b/exec/vsf_quorum.c
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+/*
+ * 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));
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-10 07:04:39 +0000