/*
* Copyright 2009-2020 the Pacemaker project contributors
*
* The version control history for this file may have further details.
*
* This source code is licensed under the GNU General Public License version 2
* or later (GPLv2+) WITHOUT ANY WARRANTY.
*/
#include <crm_internal.h>
#include <sys/param.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <sys/utsname.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <inttypes.h> /* U32T ~ PRIu32, X32T ~ PRIx32 */
#include <crm/crm.h>
#include <crm/msg_xml.h>
#include <crm/common/ipc.h>
#include <crm/common/ipc_internal.h>
#include <crm/cluster/internal.h>
#include <crm/stonith-ng.h>
#include <crm/fencing/internal.h>
#include <crm/common/xml.h>
#include <crm/common/xml_internal.h>
#include <crm/common/mainloop.h>
#include <crm/cib/internal.h>
#include <crm/pengine/status.h>
#include <pacemaker-internal.h>
#include <pacemaker-fenced.h>
char *stonith_our_uname = NULL;
char *stonith_our_uuid = NULL;
long stonith_watchdog_timeout_ms = 0;
static GMainLoop *mainloop = NULL;
gboolean stand_alone = FALSE;
static gboolean no_cib_connect = FALSE;
static gboolean stonith_shutdown_flag = FALSE;
static qb_ipcs_service_t *ipcs = NULL;
static xmlNode *local_cib = NULL;
static pe_working_set_t *fenced_data_set = NULL;
static cib_t *cib_api = NULL;
static void stonith_shutdown(int nsig);
static void stonith_cleanup(void);
static int32_t
st_ipc_accept(qb_ipcs_connection_t * c, uid_t uid, gid_t gid)
{
if (stonith_shutdown_flag) {
crm_info("Ignoring new client [%d] during shutdown",
pcmk__client_pid(c));
return -EPERM;
}
if (pcmk__new_client(c, uid, gid) == NULL) {
return -EIO;
}
return 0;
}
/* Exit code means? */
static int32_t
st_ipc_dispatch(qb_ipcs_connection_t * qbc, void *data, size_t size)
{
uint32_t id = 0;
uint32_t flags = 0;
int call_options = 0;
xmlNode *request = NULL;
pcmk__client_t *c = pcmk__find_client(qbc);
const char *op = NULL;
if (c == NULL) {
crm_info("Invalid client: %p", qbc);
return 0;
}
request = pcmk__client_data2xml(c, data, &id, &flags);
if (request == NULL) {
pcmk__ipc_send_ack(c, id, flags, "nack", CRM_EX_PROTOCOL);
return 0;
}
op = crm_element_value(request, F_CRM_TASK);
if(pcmk__str_eq(op, CRM_OP_RM_NODE_CACHE, pcmk__str_casei)) {
crm_xml_add(request, F_TYPE, T_STONITH_NG);
crm_xml_add(request, F_STONITH_OPERATION, op);
crm_xml_add(request, F_STONITH_CLIENTID, c->id);
crm_xml_add(request, F_STONITH_CLIENTNAME, pcmk__client_name(c));
crm_xml_add(request, F_STONITH_CLIENTNODE, stonith_our_uname);
send_cluster_message(NULL, crm_msg_stonith_ng, request, FALSE);
free_xml(request);
return 0;
}
if (c->name == NULL) {
const char *value = crm_element_value(request, F_STONITH_CLIENTNAME);
if (value == NULL) {
value = "unknown";
}
c->name = crm_strdup_printf("%s.%u", value, c->pid);
}
crm_element_value_int(request, F_STONITH_CALLOPTS, &call_options);
crm_trace("Flags %" X32T "/%u for command %" U32T " from %s",
flags, call_options, id, pcmk__client_name(c));
if (pcmk_is_set(call_options, st_opt_sync_call)) {
CRM_ASSERT(flags & crm_ipc_client_response);
CRM_LOG_ASSERT(c->request_id == 0); /* This means the client has two synchronous events in-flight */
c->request_id = id; /* Reply only to the last one */
}
crm_xml_add(request, F_STONITH_CLIENTID, c->id);
crm_xml_add(request, F_STONITH_CLIENTNAME, pcmk__client_name(c));
crm_xml_add(request, F_STONITH_CLIENTNODE, stonith_our_uname);
stonith_command(c, id, flags, request, NULL);
free_xml(request);
return 0;
}
/* Error code means? */
static int32_t
st_ipc_closed(qb_ipcs_connection_t * c)
{
pcmk__client_t *client = pcmk__find_client(c);
if (client == NULL) {
return 0;
}
crm_trace("Connection %p closed", c);
pcmk__free_client(client);
/* 0 means: yes, go ahead and destroy the connection */
return 0;
}
static void
st_ipc_destroy(qb_ipcs_connection_t * c)
{
crm_trace("Connection %p destroyed", c);
st_ipc_closed(c);
}
static void
stonith_peer_callback(xmlNode * msg, void *private_data)
{
const char *remote_peer = crm_element_value(msg, F_ORIG);
const char *op = crm_element_value(msg, F_STONITH_OPERATION);
if (pcmk__str_eq(op, "poke", pcmk__str_none)) {
return;
}
crm_log_xml_trace(msg, "Peer[inbound]");
stonith_command(NULL, 0, 0, msg, remote_peer);
}
#if SUPPORT_COROSYNC
static void
stonith_peer_ais_callback(cpg_handle_t handle,
const struct cpg_name *groupName,
uint32_t nodeid, uint32_t pid, void *msg, size_t msg_len)
{
uint32_t kind = 0;
xmlNode *xml = NULL;
const char *from = NULL;
char *data = pcmk_message_common_cs(handle, nodeid, pid, msg, &kind, &from);
if(data == NULL) {
return;
}
if (kind == crm_class_cluster) {
xml = string2xml(data);
if (xml == NULL) {
crm_err("Invalid XML: '%.120s'", data);
free(data);
return;
}
crm_xml_add(xml, F_ORIG, from);
/* crm_xml_add_int(xml, F_SEQ, wrapper->id); */
stonith_peer_callback(xml, NULL);
}
free_xml(xml);
free(data);
return;
}
static void
stonith_peer_cs_destroy(gpointer user_data)
{
crm_crit("Lost connection to cluster layer, shutting down");
stonith_shutdown(0);
}
#endif
void
do_local_reply(xmlNode * notify_src, const char *client_id, gboolean sync_reply, gboolean from_peer)
{
/* send callback to originating child */
pcmk__client_t *client_obj = NULL;
int local_rc = pcmk_rc_ok;
crm_trace("Sending response");
client_obj = pcmk__find_client_by_id(client_id);
crm_trace("Sending callback to request originator");
if (client_obj == NULL) {
local_rc = EPROTO;
crm_trace("No client to sent the response to. F_STONITH_CLIENTID not set.");
} else {
int rid = 0;
if (sync_reply) {
CRM_LOG_ASSERT(client_obj->request_id);
rid = client_obj->request_id;
client_obj->request_id = 0;
crm_trace("Sending response %d to %s %s",
rid, client_obj->name, from_peer ? "(originator of delegated request)" : "");
} else {
crm_trace("Sending an event to %s %s",
client_obj->name, from_peer ? "(originator of delegated request)" : "");
}
local_rc = pcmk__ipc_send_xml(client_obj, rid, notify_src,
(sync_reply? crm_ipc_flags_none
: crm_ipc_server_event));
}
if ((local_rc != pcmk_rc_ok) && (client_obj != NULL)) {
crm_warn("%s reply to %s failed: %s",
(sync_reply? "Synchronous" : "Asynchronous"),
(client_obj? client_obj->name : "unknown client"),
pcmk_rc_str(local_rc));
}
}
uint64_t
get_stonith_flag(const char *name)
{
if (pcmk__str_eq(name, T_STONITH_NOTIFY_FENCE, pcmk__str_casei)) {
return st_callback_notify_fence;
} else if (pcmk__str_eq(name, STONITH_OP_DEVICE_ADD, pcmk__str_casei)) {
return st_callback_device_add;
} else if (pcmk__str_eq(name, STONITH_OP_DEVICE_DEL, pcmk__str_casei)) {
return st_callback_device_del;
} else if (pcmk__str_eq(name, T_STONITH_NOTIFY_HISTORY, pcmk__str_casei)) {
return st_callback_notify_history;
} else if (pcmk__str_eq(name, T_STONITH_NOTIFY_HISTORY_SYNCED, pcmk__str_casei)) {
return st_callback_notify_history_synced;
}
return st_callback_unknown;
}
static void
stonith_notify_client(gpointer key, gpointer value, gpointer user_data)
{
xmlNode *update_msg = user_data;
pcmk__client_t *client = value;
const char *type = NULL;
CRM_CHECK(client != NULL, return);
CRM_CHECK(update_msg != NULL, return);
type = crm_element_value(update_msg, F_SUBTYPE);
CRM_CHECK(type != NULL, crm_log_xml_err(update_msg, "notify"); return);
if (client->ipcs == NULL) {
crm_trace("Skipping client with NULL channel");
return;
}
if (pcmk_is_set(client->flags, get_stonith_flag(type))) {
int rc = pcmk__ipc_send_xml(client, 0, update_msg,
crm_ipc_server_event|crm_ipc_server_error);
if (rc != pcmk_rc_ok) {
crm_warn("%s notification of client %s failed: %s "
CRM_XS " id=%.8s rc=%d", type, pcmk__client_name(client),
pcmk_rc_str(rc), client->id, rc);
} else {
crm_trace("Sent %s notification to client %s.%.6s", type,
pcmk__client_name(client), client->id);
}
}
}
void
do_stonith_async_timeout_update(const char *client_id, const char *call_id, int timeout)
{
pcmk__client_t *client = NULL;
xmlNode *notify_data = NULL;
if (!timeout || !call_id || !client_id) {
return;
}
client = pcmk__find_client_by_id(client_id);
if (!client) {
return;
}
notify_data = create_xml_node(NULL, T_STONITH_TIMEOUT_VALUE);
crm_xml_add(notify_data, F_TYPE, T_STONITH_TIMEOUT_VALUE);
crm_xml_add(notify_data, F_STONITH_CALLID, call_id);
crm_xml_add_int(notify_data, F_STONITH_TIMEOUT, timeout);
crm_trace("timeout update is %d for client %s and call id %s", timeout, client_id, call_id);
if (client) {
pcmk__ipc_send_xml(client, 0, notify_data, crm_ipc_server_event);
}
free_xml(notify_data);
}
void
do_stonith_notify(int options, const char *type, int result, xmlNode * data)
{
/* TODO: Standardize the contents of data */
xmlNode *update_msg = create_xml_node(NULL, "notify");
CRM_CHECK(type != NULL,;);
crm_xml_add(update_msg, F_TYPE, T_STONITH_NOTIFY);
crm_xml_add(update_msg, F_SUBTYPE, type);
crm_xml_add(update_msg, F_STONITH_OPERATION, type);
crm_xml_add_int(update_msg, F_STONITH_RC, result);
if (data != NULL) {
add_message_xml(update_msg, F_STONITH_CALLDATA, data);
}
crm_trace("Notifying clients");
pcmk__foreach_ipc_client(stonith_notify_client, update_msg);
free_xml(update_msg);
crm_trace("Notify complete");
}
static void
do_stonith_notify_config(int options, const char *op, int rc,
const char *desc, int active)
{
xmlNode *notify_data = create_xml_node(NULL, op);
CRM_CHECK(notify_data != NULL, return);
crm_xml_add(notify_data, F_STONITH_DEVICE, desc);
crm_xml_add_int(notify_data, F_STONITH_ACTIVE, active);
do_stonith_notify(options, op, rc, notify_data);
free_xml(notify_data);
}
void
do_stonith_notify_device(int options, const char *op, int rc, const char *desc)
{
do_stonith_notify_config(options, op, rc, desc, g_hash_table_size(device_list));
}
void
do_stonith_notify_level(int options, const char *op, int rc, const char *desc)
{
do_stonith_notify_config(options, op, rc, desc, g_hash_table_size(topology));
}
static void
topology_remove_helper(const char *node, int level)
{
int rc;
char *desc = NULL;
xmlNode *data = create_xml_node(NULL, XML_TAG_FENCING_LEVEL);
crm_xml_add(data, F_STONITH_ORIGIN, __func__);
crm_xml_add_int(data, XML_ATTR_STONITH_INDEX, level);
crm_xml_add(data, XML_ATTR_STONITH_TARGET, node);
rc = stonith_level_remove(data, &desc);
do_stonith_notify_level(0, STONITH_OP_LEVEL_DEL, rc, desc);
free_xml(data);
free(desc);
}
static void
remove_cib_device(xmlXPathObjectPtr xpathObj)
{
int max = numXpathResults(xpathObj), lpc = 0;
for (lpc = 0; lpc < max; lpc++) {
const char *rsc_id = NULL;
const char *standard = NULL;
xmlNode *match = getXpathResult(xpathObj, lpc);
CRM_LOG_ASSERT(match != NULL);
if(match != NULL) {
standard = crm_element_value(match, XML_AGENT_ATTR_CLASS);
}
if (!pcmk__str_eq(standard, PCMK_RESOURCE_CLASS_STONITH, pcmk__str_casei)) {
continue;
}
rsc_id = crm_element_value(match, XML_ATTR_ID);
stonith_device_remove(rsc_id, TRUE);
}
}
static void
handle_topology_change(xmlNode *match, bool remove)
{
int rc;
char *desc = NULL;
CRM_CHECK(match != NULL, return);
crm_trace("Updating %s", ID(match));
if(remove) {
int index = 0;
char *key = stonith_level_key(match, -1);
crm_element_value_int(match, XML_ATTR_STONITH_INDEX, &index);
topology_remove_helper(key, index);
free(key);
}
rc = stonith_level_register(match, &desc);
do_stonith_notify_level(0, STONITH_OP_LEVEL_ADD, rc, desc);
free(desc);
}
static void
remove_fencing_topology(xmlXPathObjectPtr xpathObj)
{
int max = numXpathResults(xpathObj), lpc = 0;
for (lpc = 0; lpc < max; lpc++) {
xmlNode *match = getXpathResult(xpathObj, lpc);
CRM_LOG_ASSERT(match != NULL);
if (match && crm_element_value(match, XML_DIFF_MARKER)) {
/* Deletion */
int index = 0;
char *target = stonith_level_key(match, -1);
crm_element_value_int(match, XML_ATTR_STONITH_INDEX, &index);
if (target == NULL) {
crm_err("Invalid fencing target in element %s", ID(match));
} else if (index <= 0) {
crm_err("Invalid level for %s in element %s", target, ID(match));
} else {
topology_remove_helper(target, index);
}
/* } else { Deal with modifications during the 'addition' stage */
}
}
}
static void
register_fencing_topology(xmlXPathObjectPtr xpathObj)
{
int max = numXpathResults(xpathObj), lpc = 0;
for (lpc = 0; lpc < max; lpc++) {
xmlNode *match = getXpathResult(xpathObj, lpc);
handle_topology_change(match, TRUE);
}
}
/* Fencing
<diff crm_feature_set="3.0.6">
<diff-removed>
<fencing-topology>
<fencing-level id="f-p1.1" target="pcmk-1" index="1" devices="poison-pill" __crm_diff_marker__="removed:top"/>
<fencing-level id="f-p1.2" target="pcmk-1" index="2" devices="power" __crm_diff_marker__="removed:top"/>
<fencing-level devices="disk,network" id="f-p2.1"/>
</fencing-topology>
</diff-removed>
<diff-added>
<fencing-topology>
<fencing-level id="f-p.1" target="pcmk-1" index="1" devices="poison-pill" __crm_diff_marker__="added:top"/>
<fencing-level id="f-p2.1" target="pcmk-2" index="1" devices="disk,something"/>
<fencing-level id="f-p3.1" target="pcmk-2" index="2" devices="power" __crm_diff_marker__="added:top"/>
</fencing-topology>
</diff-added>
</diff>
*/
static void
fencing_topology_init(void)
{
xmlXPathObjectPtr xpathObj = NULL;
const char *xpath = "//" XML_TAG_FENCING_LEVEL;
crm_trace("Full topology refresh");
free_topology_list();
init_topology_list();
/* Grab everything */
xpathObj = xpath_search(local_cib, xpath);
register_fencing_topology(xpathObj);
freeXpathObject(xpathObj);
}
#define rsc_name(x) x->clone_name?x->clone_name:x->id
/*!
* \internal
* \brief Check whether our uname is in a resource's allowed node list
*
* \param[in] rsc Resource to check
*
* \return Pointer to node object if found, NULL otherwise
*/
static pe_node_t *
our_node_allowed_for(pe_resource_t *rsc)
{
GHashTableIter iter;
pe_node_t *node = NULL;
if (rsc && stonith_our_uname) {
g_hash_table_iter_init(&iter, rsc->allowed_nodes);
while (g_hash_table_iter_next(&iter, NULL, (void **)&node)) {
if (node && strcmp(node->details->uname, stonith_our_uname) == 0) {
break;
}
node = NULL;
}
}
return node;
}
/*!
* \internal
* \brief If a resource or any of its children are STONITH devices, update their
* definitions given a cluster working set.
*
* \param[in] rsc Resource to check
* \param[in] data_set Cluster working set with device information
*/
static void cib_device_update(pe_resource_t *rsc, pe_working_set_t *data_set)
{
pe_node_t *node = NULL;
const char *value = NULL;
const char *rclass = NULL;
pe_node_t *parent = NULL;
gboolean remove = TRUE;
/* If this is a complex resource, check children rather than this resource itself.
* TODO: Mark each installed device and remove if untouched when this process finishes.
*/
if(rsc->children) {
GListPtr gIter = NULL;
for (gIter = rsc->children; gIter != NULL; gIter = gIter->next) {
cib_device_update(gIter->data, data_set);
if(pe_rsc_is_clone(rsc)) {
crm_trace("Only processing one copy of the clone %s", rsc->id);
break;
}
}
return;
}
/* We only care about STONITH resources. */
rclass = crm_element_value(rsc->xml, XML_AGENT_ATTR_CLASS);
if (!pcmk__str_eq(rclass, PCMK_RESOURCE_CLASS_STONITH, pcmk__str_casei)) {
return;
}
/* If this STONITH resource is disabled, just remove it. */
if (pe__resource_is_disabled(rsc)) {
crm_info("Device %s has been disabled", rsc->id);
goto update_done;
}
/* Check whether our node is allowed for this resource (and its parent if in a group) */
node = our_node_allowed_for(rsc);
if (rsc->parent && (rsc->parent->variant == pe_group)) {
parent = our_node_allowed_for(rsc->parent);
}
if(node == NULL) {
/* Our node is disallowed, so remove the device */
GHashTableIter iter;
crm_info("Device %s has been disabled on %s: unknown", rsc->id, stonith_our_uname);
g_hash_table_iter_init(&iter, rsc->allowed_nodes);
while (g_hash_table_iter_next(&iter, NULL, (void **)&node)) {
crm_trace("Available: %s = %d", node->details->uname, node->weight);
}
goto update_done;
} else if(node->weight < 0 || (parent && parent->weight < 0)) {
/* Our node (or its group) is disallowed by score, so remove the device */
char *score = score2char((node->weight < 0) ? node->weight : parent->weight);
crm_info("Device %s has been disabled on %s: score=%s", rsc->id, stonith_our_uname, score);
free(score);
goto update_done;
} else {
/* Our node is allowed, so update the device information */
int rc;
xmlNode *data;
GHashTableIter gIter;
stonith_key_value_t *params = NULL;
const char *name = NULL;
const char *agent = crm_element_value(rsc->xml, XML_EXPR_ATTR_TYPE);
const char *rsc_provides = NULL;
crm_debug("Device %s is allowed on %s: score=%d", rsc->id, stonith_our_uname, node->weight);
get_rsc_attributes(rsc->parameters, rsc, node, data_set);
get_meta_attributes(rsc->meta, rsc, node, data_set);
rsc_provides = g_hash_table_lookup(rsc->meta, PCMK_STONITH_PROVIDES);
g_hash_table_iter_init(&gIter, rsc->parameters);
while (g_hash_table_iter_next(&gIter, (gpointer *) & name, (gpointer *) & value)) {
if (!name || !value) {
continue;
}
params = stonith_key_value_add(params, name, value);
crm_trace(" %s=%s", name, value);
}
remove = FALSE;
data = create_device_registration_xml(rsc_name(rsc), st_namespace_any,
agent, params, rsc_provides);
stonith_key_value_freeall(params, 1, 1);
rc = stonith_device_register(data, NULL, TRUE);
CRM_ASSERT(rc == pcmk_ok);
free_xml(data);
}
update_done:
if(remove && g_hash_table_lookup(device_list, rsc_name(rsc))) {
stonith_device_remove(rsc_name(rsc), TRUE);
}
}
/*!
* \internal
* \brief Update all STONITH device definitions based on current CIB
*/
static void
cib_devices_update(void)
{
GListPtr gIter = NULL;
crm_info("Updating devices to version %s.%s.%s",
crm_element_value(local_cib, XML_ATTR_GENERATION_ADMIN),
crm_element_value(local_cib, XML_ATTR_GENERATION),
crm_element_value(local_cib, XML_ATTR_NUMUPDATES));
CRM_ASSERT(fenced_data_set != NULL);
fenced_data_set->input = local_cib;
fenced_data_set->now = crm_time_new(NULL);
fenced_data_set->localhost = stonith_our_uname;
pe__set_working_set_flags(fenced_data_set, pe_flag_quick_location);
cluster_status(fenced_data_set);
pcmk__schedule_actions(fenced_data_set, NULL, NULL);
for (gIter = fenced_data_set->resources; gIter != NULL; gIter = gIter->next) {
cib_device_update(gIter->data, fenced_data_set);
}
fenced_data_set->input = NULL; // Wasn't a copy, so don't let API free it
pe_reset_working_set(fenced_data_set);
}
static void
update_cib_stonith_devices_v2(const char *event, xmlNode * msg)
{
xmlNode *change = NULL;
char *reason = NULL;
bool needs_update = FALSE;
xmlNode *patchset = get_message_xml(msg, F_CIB_UPDATE_RESULT);
for (change = pcmk__xml_first_child(patchset); change != NULL;
change = pcmk__xml_next(change)) {
const char *op = crm_element_value(change, XML_DIFF_OP);
const char *xpath = crm_element_value(change, XML_DIFF_PATH);
const char *shortpath = NULL;
if ((op == NULL) ||
(strcmp(op, "move") == 0) ||
strstr(xpath, "/"XML_CIB_TAG_STATUS)) {
continue;
} else if (pcmk__str_eq(op, "delete", pcmk__str_casei) && strstr(xpath, "/"XML_CIB_TAG_RESOURCE)) {
const char *rsc_id = NULL;
char *search = NULL;
char *mutable = NULL;
if (strstr(xpath, XML_TAG_ATTR_SETS) ||
strstr(xpath, XML_TAG_META_SETS)) {
needs_update = TRUE;
reason = strdup("(meta) attribute deleted from resource");
break;
}
mutable = strdup(xpath);
rsc_id = strstr(mutable, "primitive[@id=\'");
if (rsc_id != NULL) {
rsc_id += strlen("primitive[@id=\'");
search = strchr(rsc_id, '\'');
}
if (search != NULL) {
*search = 0;
stonith_device_remove(rsc_id, TRUE);
} else {
crm_warn("Ignoring malformed CIB update (resource deletion)");
}
free(mutable);
} else if (strstr(xpath, "/"XML_CIB_TAG_RESOURCES) ||
strstr(xpath, "/"XML_CIB_TAG_CONSTRAINTS) ||
strstr(xpath, "/"XML_CIB_TAG_RSCCONFIG)) {
shortpath = strrchr(xpath, '/'); CRM_ASSERT(shortpath);
reason = crm_strdup_printf("%s %s", op, shortpath+1);
needs_update = TRUE;
break;
}
}
if(needs_update) {
crm_info("Updating device list from the cib: %s", reason);
cib_devices_update();
} else {
crm_trace("No updates for device list found in cib");
}
free(reason);
}
static void
update_cib_stonith_devices_v1(const char *event, xmlNode * msg)
{
const char *reason = "none";
gboolean needs_update = FALSE;
xmlXPathObjectPtr xpath_obj = NULL;
/* process new constraints */
xpath_obj = xpath_search(msg, "//" F_CIB_UPDATE_RESULT "//" XML_CONS_TAG_RSC_LOCATION);
if (numXpathResults(xpath_obj) > 0) {
int max = numXpathResults(xpath_obj), lpc = 0;
/* Safest and simplest to always recompute */
needs_update = TRUE;
reason = "new location constraint";
for (lpc = 0; lpc < max; lpc++) {
xmlNode *match = getXpathResult(xpath_obj, lpc);
crm_log_xml_trace(match, "new constraint");
}
}
freeXpathObject(xpath_obj);
/* process deletions */
xpath_obj = xpath_search(msg, "//" F_CIB_UPDATE_RESULT "//" XML_TAG_DIFF_REMOVED "//" XML_CIB_TAG_RESOURCE);
if (numXpathResults(xpath_obj) > 0) {
remove_cib_device(xpath_obj);
}
freeXpathObject(xpath_obj);
/* process additions */
xpath_obj = xpath_search(msg, "//" F_CIB_UPDATE_RESULT "//" XML_TAG_DIFF_ADDED "//" XML_CIB_TAG_RESOURCE);
if (numXpathResults(xpath_obj) > 0) {
int max = numXpathResults(xpath_obj), lpc = 0;
for (lpc = 0; lpc < max; lpc++) {
const char *rsc_id = NULL;
const char *standard = NULL;
xmlNode *match = getXpathResult(xpath_obj, lpc);
rsc_id = crm_element_value(match, XML_ATTR_ID);
standard = crm_element_value(match, XML_AGENT_ATTR_CLASS);
if (!pcmk__str_eq(standard, PCMK_RESOURCE_CLASS_STONITH, pcmk__str_casei)) {
continue;
}
crm_trace("Fencing resource %s was added or modified", rsc_id);
reason = "new resource";
needs_update = TRUE;
}
}
freeXpathObject(xpath_obj);
if(needs_update) {
crm_info("Updating device list from the cib: %s", reason);
cib_devices_update();
}
}
static void
update_cib_stonith_devices(const char *event, xmlNode * msg)
{
int format = 1;
xmlNode *patchset = get_message_xml(msg, F_CIB_UPDATE_RESULT);
CRM_ASSERT(patchset);
crm_element_value_int(patchset, "format", &format);
switch(format) {
case 1:
update_cib_stonith_devices_v1(event, msg);
break;
case 2:
update_cib_stonith_devices_v2(event, msg);
break;
default:
crm_warn("Unknown patch format: %d", format);
}
}
/* Needs to hold node name + attribute name + attribute value + 75 */
#define XPATH_MAX 512
/*!
* \internal
* \brief Check whether a node has a specific attribute name/value
*
* \param[in] node Name of node to check
* \param[in] name Name of an attribute to look for
* \param[in] value The value the named attribute needs to be set to in order to be considered a match
*
* \return TRUE if the locally cached CIB has the specified node attribute
*/
gboolean
node_has_attr(const char *node, const char *name, const char *value)
{
char xpath[XPATH_MAX];
xmlNode *match;
int n;
CRM_CHECK(local_cib != NULL, return FALSE);
/* Search for the node's attributes in the CIB. While the schema allows
* multiple sets of instance attributes, and allows instance attributes to
* use id-ref to reference values elsewhere, that is intended for resources,
* so we ignore that here.
*/
n = snprintf(xpath, XPATH_MAX, "//" XML_CIB_TAG_NODES
"/" XML_CIB_TAG_NODE "[@uname='%s']/" XML_TAG_ATTR_SETS
"/" XML_CIB_TAG_NVPAIR "[@name='%s' and @value='%s']",
node, name, value);
match = get_xpath_object(xpath, local_cib, LOG_NEVER);
CRM_CHECK(n < XPATH_MAX, return FALSE);
return (match != NULL);
}
static void
update_fencing_topology(const char *event, xmlNode * msg)
{
int format = 1;
const char *xpath;
xmlXPathObjectPtr xpathObj = NULL;
xmlNode *patchset = get_message_xml(msg, F_CIB_UPDATE_RESULT);
CRM_ASSERT(patchset);
crm_element_value_int(patchset, "format", &format);
if(format == 1) {
/* Process deletions (only) */
xpath = "//" F_CIB_UPDATE_RESULT "//" XML_TAG_DIFF_REMOVED "//" XML_TAG_FENCING_LEVEL;
xpathObj = xpath_search(msg, xpath);
remove_fencing_topology(xpathObj);
freeXpathObject(xpathObj);
/* Process additions and changes */
xpath = "//" F_CIB_UPDATE_RESULT "//" XML_TAG_DIFF_ADDED "//" XML_TAG_FENCING_LEVEL;
xpathObj = xpath_search(msg, xpath);
register_fencing_topology(xpathObj);
freeXpathObject(xpathObj);
} else if(format == 2) {
xmlNode *change = NULL;
int add[] = { 0, 0, 0 };
int del[] = { 0, 0, 0 };
xml_patch_versions(patchset, add, del);
for (change = pcmk__xml_first_child(patchset); change != NULL;
change = pcmk__xml_next(change)) {
const char *op = crm_element_value(change, XML_DIFF_OP);
const char *xpath = crm_element_value(change, XML_DIFF_PATH);
if(op == NULL) {
continue;
} else if(strstr(xpath, "/" XML_TAG_FENCING_LEVEL) != NULL) {
/* Change to a specific entry */
crm_trace("Handling %s operation %d.%d.%d for %s", op, add[0], add[1], add[2], xpath);
if(strcmp(op, "move") == 0) {
continue;
} else if(strcmp(op, "create") == 0) {
handle_topology_change(change->children, FALSE);
} else if(strcmp(op, "modify") == 0) {
xmlNode *match = first_named_child(change, XML_DIFF_RESULT);
if(match) {
handle_topology_change(match->children, TRUE);
}
} else if(strcmp(op, "delete") == 0) {
/* Nuclear option, all we have is the path and an id... not enough to remove a specific entry */
crm_info("Re-initializing fencing topology after %s operation %d.%d.%d for %s",
op, add[0], add[1], add[2], xpath);
fencing_topology_init();
return;
}
} else if (strstr(xpath, "/" XML_TAG_FENCING_TOPOLOGY) != NULL) {
/* Change to the topology in general */
crm_info("Re-initializing fencing topology after top-level %s operation %d.%d.%d for %s",
op, add[0], add[1], add[2], xpath);
fencing_topology_init();
return;
} else if (strstr(xpath, "/" XML_CIB_TAG_CONFIGURATION)) {
/* Changes to the whole config section, possibly including the topology as a whild */
if(first_named_child(change, XML_TAG_FENCING_TOPOLOGY) == NULL) {
crm_trace("Nothing for us in %s operation %d.%d.%d for %s.",
op, add[0], add[1], add[2], xpath);
} else if(strcmp(op, "delete") == 0 || strcmp(op, "create") == 0) {
crm_info("Re-initializing fencing topology after top-level %s operation %d.%d.%d for %s.",
op, add[0], add[1], add[2], xpath);
fencing_topology_init();
return;
}
} else {
crm_trace("Nothing for us in %s operation %d.%d.%d for %s",
op, add[0], add[1], add[2], xpath);
}
}
} else {
crm_warn("Unknown patch format: %d", format);
}
}
static bool have_cib_devices = FALSE;
static void
update_cib_cache_cb(const char *event, xmlNode * msg)
{
int rc = pcmk_ok;
xmlNode *stonith_enabled_xml = NULL;
xmlNode *stonith_watchdog_xml = NULL;
const char *stonith_enabled_s = NULL;
static gboolean stonith_enabled_saved = TRUE;
if(!have_cib_devices) {
crm_trace("Skipping updates until we get a full dump");
return;
} else if(msg == NULL) {
crm_trace("Missing %s update", event);
return;
}
/* Maintain a local copy of the CIB so that we have full access
* to device definitions, location constraints, and node attributes
*/
if (local_cib != NULL) {
int rc = pcmk_ok;
xmlNode *patchset = NULL;
crm_element_value_int(msg, F_CIB_RC, &rc);
if (rc != pcmk_ok) {
return;
}
patchset = get_message_xml(msg, F_CIB_UPDATE_RESULT);
xml_log_patchset(LOG_TRACE, "Config update", patchset);
rc = xml_apply_patchset(local_cib, patchset, TRUE);
switch (rc) {
case pcmk_ok:
case -pcmk_err_old_data:
break;
case -pcmk_err_diff_resync:
case -pcmk_err_diff_failed:
crm_notice("[%s] Patch aborted: %s (%d)", event, pcmk_strerror(rc), rc);
free_xml(local_cib);
local_cib = NULL;
break;
default:
crm_warn("[%s] ABORTED: %s (%d)", event, pcmk_strerror(rc), rc);
free_xml(local_cib);
local_cib = NULL;
}
}
if (local_cib == NULL) {
crm_trace("Re-requesting the full cib");
rc = cib_api->cmds->query(cib_api, NULL, &local_cib, cib_scope_local | cib_sync_call);
if(rc != pcmk_ok) {
crm_err("Couldn't retrieve the CIB: %s (%d)", pcmk_strerror(rc), rc);
return;
}
CRM_ASSERT(local_cib != NULL);
stonith_enabled_saved = FALSE; /* Trigger a full refresh below */
}
crm_peer_caches_refresh(local_cib);
stonith_enabled_xml = get_xpath_object("//nvpair[@name='stonith-enabled']",
local_cib, LOG_NEVER);
if (stonith_enabled_xml) {
stonith_enabled_s = crm_element_value(stonith_enabled_xml, XML_NVPAIR_ATTR_VALUE);
}
if (stonith_enabled_s == NULL || crm_is_true(stonith_enabled_s)) {
long timeout_ms = 0;
const char *value = NULL;
stonith_watchdog_xml = get_xpath_object("//nvpair[@name='stonith-watchdog-timeout']",
local_cib, LOG_NEVER);
if (stonith_watchdog_xml) {
value = crm_element_value(stonith_watchdog_xml, XML_NVPAIR_ATTR_VALUE);
}
if(value) {
timeout_ms = crm_get_msec(value);
}
if (timeout_ms < 0) {
timeout_ms = pcmk__auto_watchdog_timeout();
}
if(timeout_ms != stonith_watchdog_timeout_ms) {
crm_notice("New watchdog timeout %lds (was %lds)", timeout_ms/1000, stonith_watchdog_timeout_ms/1000);
stonith_watchdog_timeout_ms = timeout_ms;
}
} else {
stonith_watchdog_timeout_ms = 0;
}
if (stonith_enabled_s && crm_is_true(stonith_enabled_s) == FALSE) {
crm_trace("Ignoring cib updates while stonith is disabled");
stonith_enabled_saved = FALSE;
return;
} else if (stonith_enabled_saved == FALSE) {
crm_info("Updating stonith device and topology lists now that stonith is enabled");
stonith_enabled_saved = TRUE;
fencing_topology_init();
cib_devices_update();
} else {
update_fencing_topology(event, msg);
update_cib_stonith_devices(event, msg);
}
}
static void
init_cib_cache_cb(xmlNode * msg, int call_id, int rc, xmlNode * output, void *user_data)
{
crm_info("Updating device list from the cib: init");
have_cib_devices = TRUE;
local_cib = copy_xml(output);
crm_peer_caches_refresh(local_cib);
fencing_topology_init();
cib_devices_update();
}
static void
stonith_shutdown(int nsig)
{
crm_info("Terminating with %d clients", pcmk__ipc_client_count());
stonith_shutdown_flag = TRUE;
if (mainloop != NULL && g_main_loop_is_running(mainloop)) {
g_main_loop_quit(mainloop);
} else {
stonith_cleanup();
crm_exit(CRM_EX_OK);
}
}
static void
cib_connection_destroy(gpointer user_data)
{
if (stonith_shutdown_flag) {
crm_info("Connection to the CIB manager closed");
return;
} else {
crm_crit("Lost connection to the CIB manager, shutting down");
}
if (cib_api) {
cib_api->cmds->signoff(cib_api);
}
stonith_shutdown(0);
}
static void
stonith_cleanup(void)
{
if (cib_api) {
cib_api->cmds->del_notify_callback(cib_api, T_CIB_DIFF_NOTIFY, update_cib_cache_cb);
cib_api->cmds->signoff(cib_api);
}
if (ipcs) {
qb_ipcs_destroy(ipcs);
}
crm_peer_destroy();
pcmk__client_cleanup();
free_stonith_remote_op_list();
free_topology_list();
free_device_list();
free_metadata_cache();
free(stonith_our_uname);
stonith_our_uname = NULL;
free_xml(local_cib);
local_cib = NULL;
}
static pcmk__cli_option_t long_options[] = {
// long option, argument type, storage, short option, description, flags
{
"stand-alone", no_argument, 0, 's',
NULL, pcmk__option_default
},
{
"stand-alone-w-cpg", no_argument, 0, 'c',
NULL, pcmk__option_default
},
{
"logfile", required_argument, 0, 'l',
NULL, pcmk__option_default
},
{
"verbose", no_argument, 0, 'V',
NULL, pcmk__option_default
},
{
"version", no_argument, 0, '$',
NULL, pcmk__option_default
},
{
"help", no_argument, 0, '?',
NULL, pcmk__option_default
},
{ 0, 0, 0, 0 }
};
static void
setup_cib(void)
{
int rc, retries = 0;
cib_api = cib_new();
if (cib_api == NULL) {
crm_err("No connection to the CIB manager");
return;
}
do {
sleep(retries);
rc = cib_api->cmds->signon(cib_api, CRM_SYSTEM_STONITHD, cib_command);
} while (rc == -ENOTCONN && ++retries < 5);
if (rc != pcmk_ok) {
crm_err("Could not connect to the CIB manager: %s (%d)", pcmk_strerror(rc), rc);
} else if (pcmk_ok !=
cib_api->cmds->add_notify_callback(cib_api, T_CIB_DIFF_NOTIFY, update_cib_cache_cb)) {
crm_err("Could not set CIB notification callback");
} else {
rc = cib_api->cmds->query(cib_api, NULL, NULL, cib_scope_local);
cib_api->cmds->register_callback(cib_api, rc, 120, FALSE, NULL, "init_cib_cache_cb",
init_cib_cache_cb);
cib_api->cmds->set_connection_dnotify(cib_api, cib_connection_destroy);
crm_info("Watching for stonith topology changes");
}
}
struct qb_ipcs_service_handlers ipc_callbacks = {
.connection_accept = st_ipc_accept,
.connection_created = NULL,
.msg_process = st_ipc_dispatch,
.connection_closed = st_ipc_closed,
.connection_destroyed = st_ipc_destroy
};
/*!
* \internal
* \brief Callback for peer status changes
*
* \param[in] type What changed
* \param[in] node What peer had the change
* \param[in] data Previous value of what changed
*/
static void
st_peer_update_callback(enum crm_status_type type, crm_node_t * node, const void *data)
{
if ((type != crm_status_processes)
&& !pcmk_is_set(node->flags, crm_remote_node)) {
/*
* This is a hack until we can send to a nodeid and/or we fix node name lookups
* These messages are ignored in stonith_peer_callback()
*/
xmlNode *query = create_xml_node(NULL, "stonith_command");
crm_xml_add(query, F_XML_TAGNAME, "stonith_command");
crm_xml_add(query, F_TYPE, T_STONITH_NG);
crm_xml_add(query, F_STONITH_OPERATION, "poke");
crm_debug("Broadcasting our uname because of node %u", node->id);
send_cluster_message(NULL, crm_msg_stonith_ng, query, FALSE);
free_xml(query);
}
}
int
main(int argc, char **argv)
{
int flag;
int lpc = 0;
int argerr = 0;
int option_index = 0;
crm_cluster_t cluster;
const char *actions[] = { "reboot", "off", "on", "list", "monitor", "status" };
crm_ipc_t *old_instance = NULL;
crm_log_preinit(NULL, argc, argv);
pcmk__set_cli_options(NULL, "[options]", long_options,
"daemon for executing fencing devices in a "
"Pacemaker cluster");
while (1) {
flag = pcmk__next_cli_option(argc, argv, &option_index, NULL);
if (flag == -1) {
break;
}
switch (flag) {
case 'V':
crm_bump_log_level(argc, argv);
break;
case 'l':
crm_add_logfile(optarg);
break;
case 's':
stand_alone = TRUE;
break;
case 'c':
stand_alone = FALSE;
no_cib_connect = TRUE;
break;
case '$':
case '?':
pcmk__cli_help(flag, CRM_EX_OK);
break;
default:
++argerr;
break;
}
}
if (argc - optind == 1 && pcmk__str_eq("metadata", argv[optind], pcmk__str_casei)) {
printf("<?xml version=\"1.0\"?><!DOCTYPE resource-agent SYSTEM \"ra-api-1.dtd\">\n");
printf("<resource-agent name=\"pacemaker-fenced\">\n");
printf(" <version>1.0</version>\n");
printf(" <longdesc lang=\"en\">Instance attributes available for all \"stonith\"-class resources"
" and used by Pacemaker's fence daemon, formerly known as stonithd</longdesc>\n");
printf(" <shortdesc lang=\"en\">Instance attributes available for all \"stonith\"-class resources</shortdesc>\n");
printf(" <parameters>\n");
#if 0
// priority is not implemented yet
printf(" <parameter name=\"priority\" unique=\"0\">\n");
printf(" <shortdesc lang=\"en\">Devices that are not in a topology "
"are tried in order of highest to lowest integer priority</shortdesc>\n");
printf(" <content type=\"integer\" default=\"0\"/>\n");
printf(" </parameter>\n");
#endif
printf(" <parameter name=\"%s\" unique=\"0\">\n",
PCMK_STONITH_HOST_ARGUMENT);
printf
(" <shortdesc lang=\"en\">Advanced use only: An alternate parameter to supply instead of 'port'</shortdesc>\n");
printf
(" <longdesc lang=\"en\">Some devices do not support the standard 'port' parameter or may provide additional ones.\n"
"Use this to specify an alternate, device-specific, parameter that should indicate the machine to be fenced.\n"
"A value of 'none' can be used to tell the cluster not to supply any additional parameters.\n"
" </longdesc>\n");
printf(" <content type=\"string\" default=\"port\"/>\n");
printf(" </parameter>\n");
printf(" <parameter name=\"%s\" unique=\"0\">\n",
PCMK_STONITH_HOST_MAP);
printf
(" <shortdesc lang=\"en\">A mapping of host names to ports numbers for devices that do not support host names.</shortdesc>\n");
printf
(" <longdesc lang=\"en\">Eg. node1:1;node2:2,3 would tell the cluster to use port 1 for node1 and ports 2 and 3 for node2</longdesc>\n");
printf(" <content type=\"string\" default=\"\"/>\n");
printf(" </parameter>\n");
printf(" <parameter name=\"%s\" unique=\"0\">\n",
PCMK_STONITH_HOST_LIST);
printf(" <shortdesc lang=\"en\">A list of machines controlled by "
"this device (Optional unless %s=static-list).</shortdesc>\n",
PCMK_STONITH_HOST_CHECK);
printf(" <content type=\"string\" default=\"\"/>\n");
printf(" </parameter>\n");
printf(" <parameter name=\"%s\" unique=\"0\">\n",
PCMK_STONITH_HOST_CHECK);
printf
(" <shortdesc lang=\"en\">How to determine which machines are controlled by the device.</shortdesc>\n");
printf(" <longdesc lang=\"en\">Allowed values: dynamic-list "
"(query the device via the 'list' command), static-list "
"(check the " PCMK_STONITH_HOST_LIST " attribute), status "
"(query the device via the 'status' command), none (assume "
"every device can fence every machine)</longdesc>\n");
printf(" <content type=\"string\" default=\"dynamic-list\"/>\n");
printf(" </parameter>\n");
printf(" <parameter name=\"%s\" unique=\"0\">\n",
PCMK_STONITH_DELAY_MAX);
printf
(" <shortdesc lang=\"en\">Enable a random delay for stonith actions and specify the maximum of random delay.</shortdesc>\n");
printf
(" <longdesc lang=\"en\">This prevents double fencing when using slow devices such as sbd.\n"
"Use this to enable a random delay for stonith actions.\n"
"The overall delay is derived from this random delay value adding a static delay so that the sum is kept below the maximum delay.</longdesc>\n");
printf(" <content type=\"time\" default=\"0s\"/>\n");
printf(" </parameter>\n");
printf(" <parameter name=\"%s\" unique=\"0\">\n",
PCMK_STONITH_DELAY_BASE);
printf
(" <shortdesc lang=\"en\">Enable a base delay for stonith actions and specify base delay value.</shortdesc>\n");
printf
(" <longdesc lang=\"en\">This prevents double fencing when different delays are configured on the nodes.\n"
"Use this to enable a static delay for stonith actions.\n"
"The overall delay is derived from a random delay value adding this static delay so that the sum is kept below the maximum delay.</longdesc>\n");
printf(" <content type=\"time\" default=\"0s\"/>\n");
printf(" </parameter>\n");
printf(" <parameter name=\"%s\" unique=\"0\">\n",
PCMK_STONITH_ACTION_LIMIT);
printf
(" <shortdesc lang=\"en\">The maximum number of actions can be performed in parallel on this device</shortdesc>\n");
printf
(" <longdesc lang=\"en\">Cluster property concurrent-fencing=true needs to be configured first.\n"
"Then use this to specify the maximum number of actions can be performed in parallel on this device. -1 is unlimited.</longdesc>\n");
printf(" <content type=\"integer\" default=\"1\"/>\n");
printf(" </parameter>\n");
for (lpc = 0; lpc < DIMOF(actions); lpc++) {
printf(" <parameter name=\"pcmk_%s_action\" unique=\"0\">\n", actions[lpc]);
printf
(" <shortdesc lang=\"en\">Advanced use only: An alternate command to run instead of '%s'</shortdesc>\n",
actions[lpc]);
printf
(" <longdesc lang=\"en\">Some devices do not support the standard commands or may provide additional ones.\n"
"Use this to specify an alternate, device-specific, command that implements the '%s' action.</longdesc>\n",
actions[lpc]);
printf(" <content type=\"string\" default=\"%s\"/>\n", actions[lpc]);
printf(" </parameter>\n");
printf(" <parameter name=\"pcmk_%s_timeout\" unique=\"0\">\n", actions[lpc]);
printf
(" <shortdesc lang=\"en\">Advanced use only: Specify an alternate timeout to use for %s actions instead of stonith-timeout</shortdesc>\n",
actions[lpc]);
printf
(" <longdesc lang=\"en\">Some devices need much more/less time to complete than normal.\n"
"Use this to specify an alternate, device-specific, timeout for '%s' actions.</longdesc>\n",
actions[lpc]);
printf(" <content type=\"time\" default=\"60s\"/>\n");
printf(" </parameter>\n");
printf(" <parameter name=\"pcmk_%s_retries\" unique=\"0\">\n", actions[lpc]);
printf
(" <shortdesc lang=\"en\">Advanced use only: The maximum number of times to retry the '%s' command within the timeout period</shortdesc>\n",
actions[lpc]);
printf(" <longdesc lang=\"en\">Some devices do not support multiple connections."
" Operations may 'fail' if the device is busy with another task so Pacemaker will automatically retry the operation, if there is time remaining."
" Use this option to alter the number of times Pacemaker retries '%s' actions before giving up."
"</longdesc>\n", actions[lpc]);
printf(" <content type=\"integer\" default=\"2\"/>\n");
printf(" </parameter>\n");
}
printf(" </parameters>\n");
printf("</resource-agent>\n");
return CRM_EX_OK;
}
if (optind != argc) {
++argerr;
}
if (argerr) {
pcmk__cli_help('?', CRM_EX_USAGE);
}
crm_log_init(NULL, LOG_INFO, TRUE, FALSE, argc, argv, FALSE);
crm_notice("Starting Pacemaker fencer");
old_instance = crm_ipc_new("stonith-ng", 0);
if (crm_ipc_connect(old_instance)) {
/* IPC end-point already up */
crm_ipc_close(old_instance);
crm_ipc_destroy(old_instance);
crm_err("pacemaker-fenced is already active, aborting startup");
crm_exit(CRM_EX_OK);
} else {
/* not up or not authentic, we'll proceed either way */
crm_ipc_destroy(old_instance);
old_instance = NULL;
}
mainloop_add_signal(SIGTERM, stonith_shutdown);
crm_peer_init();
fenced_data_set = pe_new_working_set();
CRM_ASSERT(fenced_data_set != NULL);
pe__set_working_set_flags(fenced_data_set,
pe_flag_no_counts|pe_flag_no_compat);
if (stand_alone == FALSE) {
if (is_corosync_cluster()) {
#if SUPPORT_COROSYNC
cluster.destroy = stonith_peer_cs_destroy;
cluster.cpg.cpg_deliver_fn = stonith_peer_ais_callback;
cluster.cpg.cpg_confchg_fn = pcmk_cpg_membership;
#endif
}
crm_set_status_callback(&st_peer_update_callback);
if (crm_cluster_connect(&cluster) == FALSE) {
crm_crit("Cannot sign in to the cluster... terminating");
crm_exit(CRM_EX_FATAL);
}
stonith_our_uname = cluster.uname;
stonith_our_uuid = cluster.uuid;
if (no_cib_connect == FALSE) {
setup_cib();
}
} else {
stonith_our_uname = strdup("localhost");
}
init_device_list();
init_topology_list();
if(stonith_watchdog_timeout_ms > 0) {
int rc;
xmlNode *xml;
stonith_key_value_t *params = NULL;
params = stonith_key_value_add(params, PCMK_STONITH_HOST_LIST,
stonith_our_uname);
xml = create_device_registration_xml("watchdog", st_namespace_internal,
STONITH_WATCHDOG_AGENT, params,
NULL);
stonith_key_value_freeall(params, 1, 1);
rc = stonith_device_register(xml, NULL, FALSE);
free_xml(xml);
if (rc != pcmk_ok) {
crm_crit("Cannot register watchdog pseudo fence agent");
crm_exit(CRM_EX_FATAL);
}
}
pcmk__serve_fenced_ipc(&ipcs, &ipc_callbacks);
/* Create the mainloop and run it... */
mainloop = g_main_loop_new(NULL, FALSE);
crm_notice("Pacemaker fencer successfully started and accepting connections");
g_main_loop_run(mainloop);
stonith_cleanup();
pe_free_working_set(fenced_data_set);
crm_exit(CRM_EX_OK);
}