No OneTemporary
Actions

Size

72 KB

Referenced Files

None

Subscribers

None

View Options

	diff --git a/lib/fencing/st_client.c b/lib/fencing/st_client.c
	index c38f3560c9..feb8c73ae1 100644
	--- a/lib/fencing/st_client.c
	+++ b/lib/fencing/st_client.c
	@@ -1,2345 +1,2395 @@
	/*
	* Copyright (c) 2004 Andrew Beekhof <andrew@beekhof.net>
	*
	* This library is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Lesser General Public
	* License as published by the Free Software Foundation; either
	* version 2.1 of the License, or (at your option) any later version.
	*
	* This library is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* Lesser General Public License for more details.
	*
	* You should have received a copy of the GNU Lesser General Public
	* License along with this library; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	*
	*/
	#include <crm_internal.h>
	#include <unistd.h>
	#include <stdlib.h>
	#include <stdio.h>
	#include <string.h>
	#include <ctype.h>
	#include <libgen.h>

	#include <sys/stat.h>
	#include <sys/types.h>
	#include <sys/wait.h>

	#include <glib.h>

	#include <crm/crm.h>
	#include <crm/stonith-ng.h>
	#include <crm/fencing/internal.h>
	#include <crm/msg_xml.h>
	#include <crm/common/xml.h>

	#include <crm/common/mainloop.h>

	#if SUPPORT_CIBSECRETS
	# include <crm/common/cib_secrets.h>
	#endif

	CRM_TRACE_INIT_DATA(stonith);

	struct stonith_action_s {
	/! user defined data /
	char *agent;
	char *action;
	char *victim;
	GHashTable *args;
	int timeout;
	int async;
	void *userdata;
	void (done_cb) (GPid pid, gint status, const char output, gpointer user_data);
	void (*fork_cb) (GPid pid, gpointer user_data);

	svc_action_t *svc_action;

	/! internal timing information /
	time_t initial_start_time;
	int tries;
	int remaining_timeout;
	int max_retries;

	/* device output data */
	GPid pid;
	int rc;
	char *output;
	char *error;
	};

	typedef struct stonith_private_s {
	char *token;
	crm_ipc_t *ipc;
	mainloop_io_t *source;
	GHashTable *stonith_op_callback_table;
	GList *notify_list;
	+ int notify_refcnt;
	+ bool notify_deletes;

	void (op_callback) (stonith_t st, stonith_callback_data_t * data);

	} stonith_private_t;

	typedef struct stonith_notify_client_s {
	const char *event;
	const char obj_id; / implement one day */
	const char obj_type; / implement one day */
	void (notify) (stonith_t st, stonith_event_t * e);
	+ bool delete;

	} stonith_notify_client_t;

	typedef struct stonith_callback_client_s {
	void (callback) (stonith_t st, stonith_callback_data_t * data);
	const char *id;
	void *user_data;
	gboolean only_success;
	gboolean allow_timeout_updates;
	struct timer_rec_s *timer;

	} stonith_callback_client_t;

	struct notify_blob_s {
	stonith_t *stonith;
	xmlNode *xml;
	};

	struct timer_rec_s {
	int call_id;
	int timeout;
	guint ref;
	stonith_t *stonith;
	};

	typedef int (stonith_op_t) (const char , int, const char , xmlNode ,
	xmlNode , xmlNode , xmlNode , xmlNode );

	bool stonith_dispatch(stonith_t * st);
	int stonith_dispatch_internal(const char *buffer, ssize_t length, gpointer userdata);
	void stonith_perform_callback(stonith_t * stonith, xmlNode * msg, int call_id, int rc);
	xmlNode stonith_create_op(int call_id, const char token, const char op, xmlNode data,
	int call_options);
	int stonith_send_command(stonith_t * stonith, const char op, xmlNode data,
	xmlNode ** output_data, int call_options, int timeout);

	static void stonith_connection_destroy(gpointer user_data);
	static void stonith_send_notification(gpointer data, gpointer user_data);
	static int internal_stonith_action_execute(stonith_action_t * action);
	static void log_action(stonith_action_t *action, pid_t pid);

	/*!
	* \brief Get agent namespace by name
	*
	* \param[in] namespace_s Name of namespace as string
	*
	* \return Namespace as enum value
	*/
	enum stonith_namespace
	stonith_text2namespace(const char *namespace_s)
	{
	if ((namespace_s == NULL) \|\| !strcmp(namespace_s, "any")) {
	return st_namespace_any;

	} else if (!strcmp(namespace_s, "redhat")
	\|\| !strcmp(namespace_s, "stonith-ng")) {
	return st_namespace_rhcs;

	} else if (!strcmp(namespace_s, "internal")) {
	return st_namespace_internal;

	} else if (!strcmp(namespace_s, "heartbeat")) {
	return st_namespace_lha;
	}
	return st_namespace_invalid;
	}

	/*!
	* \brief Get agent namespace name
	*
	* \param[in] namespace Namespace as enum value
	*
	* \return Namespace name as string
	*/
	const char *
	stonith_namespace2text(enum stonith_namespace st_namespace)
	{
	switch (st_namespace) {
	case st_namespace_any: return "any";
	case st_namespace_rhcs: return "stonith-ng";
	case st_namespace_internal: return "internal";
	case st_namespace_lha: return "heartbeat";
	default: break;
	}
	return "unsupported";
	}

	/*!
	* \brief Determine namespace of a fence agent
	*
	* \param[in] agent Fence agent type
	* \param[in] namespace_s Name of agent namespace as string, if known
	*
	* \return Namespace of specified agent, as enum value
	*/
	enum stonith_namespace
	stonith_get_namespace(const char agent, const char namespace_s)
	{
	if (safe_str_eq(namespace_s, "internal")) {
	return st_namespace_internal;
	}

	if (stonith__agent_is_rhcs(agent)) {
	return st_namespace_rhcs;
	}

	#if HAVE_STONITH_STONITH_H
	if (stonith__agent_is_lha(agent)) {
	return st_namespace_lha;
	}
	#endif

	crm_err("Unknown fence agent: %s", agent);
	return st_namespace_invalid;
	}

	static void
	log_action(stonith_action_t *action, pid_t pid)
	{
	if (action->output) {
	/* Logging the whole string confuses syslog when the string is xml */
	char *prefix = crm_strdup_printf("%s[%d] stdout:", action->agent, pid);

	crm_log_output(LOG_TRACE, prefix, action->output);
	free(prefix);
	}

	if (action->error) {
	/* Logging the whole string confuses syslog when the string is xml */
	char *prefix = crm_strdup_printf("%s[%d] stderr:", action->agent, pid);

	crm_log_output(LOG_WARNING, prefix, action->error);
	free(prefix);
	}
	}

	+/* when cycling through the list we don't want to delete items
	+ so just mark them and when we know nobody is using the list
	+ loop over it to remove the marked items
	+ */
	+static void
	+foreach_notify_entry (stonith_private_t *private,
	+ GFunc func,
	+ gpointer user_data)
	+{
	+ private->notify_refcnt++;
	+ g_list_foreach(private->notify_list, func, user_data);
	+ private->notify_refcnt--;
	+ if ((private->notify_refcnt == 0) &&
	+ private->notify_deletes) {
	+ GList *list_item = private->notify_list;
	+
	+ private->notify_deletes = FALSE;
	+ while (list_item != NULL)
	+ {
	+ stonith_notify_client_t *list_client = list_item->data;
	+ GList *next = g_list_next(list_item);
	+
	+ if (list_client->delete) {
	+ free(list_client);
	+ private->notify_list =
	+ g_list_delete_link(private->notify_list, list_item);
	+ }
	+ list_item = next;
	+ }
	+ }
	+}
	+
	static void
	stonith_connection_destroy(gpointer user_data)
	{
	stonith_t *stonith = user_data;
	stonith_private_t *native = NULL;
	struct notify_blob_s blob;

	crm_trace("Sending destroyed notification");
	blob.stonith = stonith;
	blob.xml = create_xml_node(NULL, "notify");

	native = stonith->private;
	native->ipc = NULL;
	native->source = NULL;

	stonith->state = stonith_disconnected;
	crm_xml_add(blob.xml, F_TYPE, T_STONITH_NOTIFY);
	crm_xml_add(blob.xml, F_SUBTYPE, T_STONITH_NOTIFY_DISCONNECT);

	- g_list_foreach(native->notify_list, stonith_send_notification, &blob);
	+ foreach_notify_entry(native, stonith_send_notification, &blob);
	free_xml(blob.xml);
	}

	xmlNode *
	create_device_registration_xml(const char *id, enum stonith_namespace namespace,
	const char agent, stonith_key_value_t params,
	const char *rsc_provides)
	{
	xmlNode *data = create_xml_node(NULL, F_STONITH_DEVICE);
	xmlNode *args = create_xml_node(data, XML_TAG_ATTRS);

	#if HAVE_STONITH_STONITH_H
	if (namespace == st_namespace_any) {
	namespace = stonith_get_namespace(agent, NULL);
	}
	if (namespace == st_namespace_lha) {
	hash2field((gpointer) "plugin", (gpointer) agent, args);
	agent = "fence_legacy";
	}
	#endif

	crm_xml_add(data, XML_ATTR_ID, id);
	crm_xml_add(data, F_STONITH_ORIGIN, __FUNCTION__);
	crm_xml_add(data, "agent", agent);
	if ((namespace != st_namespace_any) && (namespace != st_namespace_invalid)) {
	crm_xml_add(data, "namespace", stonith_namespace2text(namespace));
	}
	if (rsc_provides) {
	crm_xml_add(data, "rsc_provides", rsc_provides);
	}

	for (; params; params = params->next) {
	hash2field((gpointer) params->key, (gpointer) params->value, args);
	}

	return data;
	}

	static int
	stonith_api_register_device(stonith_t * st, int call_options,
	const char id, const char namespace, const char *agent,
	stonith_key_value_t * params)
	{
	int rc = 0;
	xmlNode *data = NULL;

	data = create_device_registration_xml(id, stonith_text2namespace(namespace),
	agent, params, NULL);

	rc = stonith_send_command(st, STONITH_OP_DEVICE_ADD, data, NULL, call_options, 0);
	free_xml(data);

	return rc;
	}

	static int
	stonith_api_remove_device(stonith_t * st, int call_options, const char *name)
	{
	int rc = 0;
	xmlNode *data = NULL;

	data = create_xml_node(NULL, F_STONITH_DEVICE);
	crm_xml_add(data, F_STONITH_ORIGIN, __FUNCTION__);
	crm_xml_add(data, XML_ATTR_ID, name);
	rc = stonith_send_command(st, STONITH_OP_DEVICE_DEL, data, NULL, call_options, 0);
	free_xml(data);

	return rc;
	}

	static int
	stonith_api_remove_level_full(stonith_t *st, int options,
	const char node, const char pattern,
	const char attr, const char value, int level)
	{
	int rc = 0;
	xmlNode *data = NULL;

	CRM_CHECK(node \|\| pattern \|\| (attr && value), return -EINVAL);

	data = create_xml_node(NULL, XML_TAG_FENCING_LEVEL);
	crm_xml_add(data, F_STONITH_ORIGIN, __FUNCTION__);

	if (node) {
	crm_xml_add(data, XML_ATTR_STONITH_TARGET, node);

	} else if (pattern) {
	crm_xml_add(data, XML_ATTR_STONITH_TARGET_PATTERN, pattern);

	} else {
	crm_xml_add(data, XML_ATTR_STONITH_TARGET_ATTRIBUTE, attr);
	crm_xml_add(data, XML_ATTR_STONITH_TARGET_VALUE, value);
	}

	crm_xml_add_int(data, XML_ATTR_STONITH_INDEX, level);
	rc = stonith_send_command(st, STONITH_OP_LEVEL_DEL, data, NULL, options, 0);
	free_xml(data);

	return rc;
	}

	static int
	stonith_api_remove_level(stonith_t * st, int options, const char *node, int level)
	{
	return stonith_api_remove_level_full(st, options, node,
	NULL, NULL, NULL, level);
	}

	/*!
	* \internal
	* \brief Create XML for stonithd topology level registration request
	*
	* \param[in] node If not NULL, target level by this node name
	* \param[in] pattern If not NULL, target by node name using this regex
	* \param[in] attr If not NULL, target by this node attribute
	* \param[in] value If not NULL, target by this node attribute value
	* \param[in] level Index number of level to register
	* \param[in] device_list List of devices in level
	*
	* \return Newly allocated XML tree on success, NULL otherwise
	*
	* \note The caller should set only one of node, pattern or attr/value.
	*/
	xmlNode *
	create_level_registration_xml(const char node, const char pattern,
	const char attr, const char value,
	int level, stonith_key_value_t *device_list)
	{
	int len = 0;
	char *list = NULL;
	xmlNode *data;

	CRM_CHECK(node \|\| pattern \|\| (attr && value), return NULL);

	data = create_xml_node(NULL, XML_TAG_FENCING_LEVEL);
	CRM_CHECK(data, return NULL);

	crm_xml_add(data, F_STONITH_ORIGIN, __FUNCTION__);
	crm_xml_add_int(data, XML_ATTR_ID, level);
	crm_xml_add_int(data, XML_ATTR_STONITH_INDEX, level);

	if (node) {
	crm_xml_add(data, XML_ATTR_STONITH_TARGET, node);

	} else if (pattern) {
	crm_xml_add(data, XML_ATTR_STONITH_TARGET_PATTERN, pattern);

	} else {
	crm_xml_add(data, XML_ATTR_STONITH_TARGET_ATTRIBUTE, attr);
	crm_xml_add(data, XML_ATTR_STONITH_TARGET_VALUE, value);
	}

	for (; device_list; device_list = device_list->next) {

	int adding = strlen(device_list->value);
	if(list) {
	adding++; /* +1 space */
	}

	crm_trace("Adding %s (%dc) at offset %d", device_list->value, adding, len);
	list = realloc_safe(list, len + adding + 1); /* +1 EOS */
	if (list == NULL) {
	crm_perror(LOG_CRIT, "Could not create device list");
	free_xml(data);
	return NULL;
	}
	sprintf(list + len, "%s%s", len?",":"", device_list->value);
	len += adding;
	}

	crm_xml_add(data, XML_ATTR_STONITH_DEVICES, list);

	free(list);
	return data;
	}

	static int
	stonith_api_register_level_full(stonith_t * st, int options, const char *node,
	const char *pattern,
	const char attr, const char value,
	int level, stonith_key_value_t *device_list)
	{
	int rc = 0;
	xmlNode *data = create_level_registration_xml(node, pattern, attr, value,
	level, device_list);
	CRM_CHECK(data != NULL, return -EINVAL);

	rc = stonith_send_command(st, STONITH_OP_LEVEL_ADD, data, NULL, options, 0);
	free_xml(data);

	return rc;
	}

	static int
	stonith_api_register_level(stonith_t * st, int options, const char *node, int level,
	stonith_key_value_t * device_list)
	{
	return stonith_api_register_level_full(st, options, node, NULL, NULL, NULL,
	level, device_list);
	}

	static void
	append_arg(const char key, const char value, GHashTable **args)
	{
	CRM_CHECK(key != NULL, return);
	CRM_CHECK(value != NULL, return);
	CRM_CHECK(args != NULL, return);

	if (strstr(key, "pcmk_")) {
	return;
	} else if (strstr(key, CRM_META)) {
	return;
	} else if (safe_str_eq(key, "crm_feature_set")) {
	return;
	}

	if (!*args) {
	*args = crm_str_table_new();
	}

	CRM_CHECK(*args != NULL, return);
	crm_trace("Appending: %s=%s", key, value);
	g_hash_table_replace(*args, strdup(key), strdup(value));
	}

	static void
	append_config_arg(gpointer key, gpointer value, gpointer user_data)
	{
	/* stonithd will filter action out when it registers the device,
	* but ignore it here just in case any other library callers
	* fail to do so.
	*/
	if (safe_str_neq(key, STONITH_ATTR_ACTION_OP)) {
	append_arg(key, value, user_data);
	return;
	}
	}

	static void
	append_host_specific_args(const char victim, const char map, GHashTable * params, GHashTable **args)
	{
	char *name = NULL;
	int last = 0, lpc = 0, max = 0;

	if (map == NULL) {
	/* The best default there is for now... */
	crm_debug("Using default arg map: port=uname");
	append_arg("port", victim, args);
	return;
	}

	max = strlen(map);
	crm_debug("Processing arg map: %s", map);
	for (; lpc < max + 1; lpc++) {
	if (isalpha(map[lpc])) {
	/* keep going */

	} else if (map[lpc] == '=' \|\| map[lpc] == ':') {
	free(name);
	name = calloc(1, 1 + lpc - last);
	memcpy(name, map + last, lpc - last);
	crm_debug("Got name: %s", name);
	last = lpc + 1;

	} else if (map[lpc] == 0 \|\| map[lpc] == ',' \|\| isspace(map[lpc])) {
	char *param = NULL;
	const char *value = NULL;

	param = calloc(1, 1 + lpc - last);
	memcpy(param, map + last, lpc - last);
	last = lpc + 1;

	crm_debug("Got key: %s", param);
	if (name == NULL) {
	crm_err("Misparsed '%s', found '%s' without a name", map, param);
	free(param);
	continue;
	}

	if (safe_str_eq(param, "uname")) {
	value = victim;
	} else {
	char *key = crm_meta_name(param);

	value = g_hash_table_lookup(params, key);
	free(key);
	}

	if (value) {
	crm_debug("Setting '%s'='%s' (%s) for %s", name, value, param, victim);
	append_arg(name, value, args);

	} else {
	crm_err("No node attribute '%s' for '%s'", name, victim);
	}

	free(name);
	name = NULL;
	free(param);
	if (map[lpc] == 0) {
	break;
	}

	} else if (isspace(map[lpc])) {
	last = lpc;
	}
	}
	free(name);
	}

	static GHashTable *
	make_args(const char agent, const char action, const char victim, uint32_t victim_nodeid, GHashTable device_args,
	GHashTable * port_map)
	{
	char buffer[512];
	GHashTable *arg_list = NULL;
	const char *value = NULL;

	CRM_CHECK(action != NULL, return NULL);

	snprintf(buffer, sizeof(buffer), "pcmk_%s_action", action);
	if (device_args) {
	value = g_hash_table_lookup(device_args, buffer);
	}

	if (value == NULL && device_args) {
	/* @COMPAT deprecated since 1.1.6 */
	snprintf(buffer, sizeof(buffer), "pcmk_%s_cmd", action);
	value = g_hash_table_lookup(device_args, buffer);
	}

	if (value == NULL && device_args && safe_str_eq(action, "off")) {
	/* @COMPAT deprecated since 1.1.8 */
	value = g_hash_table_lookup(device_args, "pcmk_poweroff_action");
	}

	if (value) {
	crm_info("Substituting action '%s' for requested operation '%s'", value, action);
	action = value;
	}

	append_arg(STONITH_ATTR_ACTION_OP, action, &arg_list);
	if (victim && device_args) {
	const char *alias = victim;
	const char *param = g_hash_table_lookup(device_args, STONITH_ATTR_HOSTARG);

	if (port_map && g_hash_table_lookup(port_map, victim)) {
	alias = g_hash_table_lookup(port_map, victim);
	}

	/* Always supply the node's name too:
	* https://fedorahosted.org/cluster/wiki/FenceAgentAPI
	*/
	append_arg("nodename", victim, &arg_list);
	if (victim_nodeid) {
	char nodeid_str[33] = { 0, };
	if (snprintf(nodeid_str, 33, "%u", (unsigned int)victim_nodeid)) {
	crm_info("For stonith action (%s) for victim %s, adding nodeid (%s) to parameters",
	action, victim, nodeid_str);
	append_arg("nodeid", nodeid_str, &arg_list);
	}
	}

	/* Check if we need to supply the victim in any other form */
	if(safe_str_eq(agent, "fence_legacy")) {
	value = agent;

	} else if (param == NULL) {
	// @COMPAT config < 1.1.6
	// pcmk_arg_map is deprecated in favor of pcmk_host_argument
	const char *map = g_hash_table_lookup(device_args, STONITH_ATTR_ARGMAP);

	if (map == NULL) {
	param = "port";
	value = g_hash_table_lookup(device_args, param);

	} else {
	append_host_specific_args(alias, map, device_args, &arg_list);
	value = map; /* Nothing more to do */
	}

	} else if (safe_str_eq(param, "none")) {
	value = param; /* Nothing more to do */

	} else {
	value = g_hash_table_lookup(device_args, param);
	}

	/* Don't overwrite explictly set values for $param */
	if (value == NULL \|\| safe_str_eq(value, "dynamic")) {
	crm_debug("Performing %s action for node '%s' as '%s=%s'", action, victim, param,
	alias);
	append_arg(param, alias, &arg_list);
	}
	}

	if (device_args) {
	g_hash_table_foreach(device_args, append_config_arg, &arg_list);
	}

	return arg_list;
	}

	/*!
	* \internal
	* \brief Free all memory used by a stonith action
	*
	* \param[in,out] action Action to free
	*/
	void
	stonith__destroy_action(stonith_action_t *action)
	{
	if (action) {
	free(action->agent);
	if (action->args) {
	g_hash_table_destroy(action->args);
	}
	free(action->action);
	free(action->victim);
	if (action->svc_action) {
	services_action_free(action->svc_action);
	}
	free(action->output);
	free(action->error);
	free(action);
	}
	}

	/*!
	* \internal
	* \brief Get the result of an executed stonith action
	*
	* \param[in,out] action Executed action
	* \param[out] rc Where to store result code (or NULL)
	* \param[out] output Where to store standard output (or NULL)
	* \param[out] error_output Where to store standard error output (or NULL)
	*
	* \note If output or error_output is not NULL, the caller is responsible for
	* freeing the memory.
	*/
	void
	stonith__action_result(stonith_action_t action, int rc, char **output,
	char **error_output)
	{
	if (rc) {
	*rc = pcmk_ok;
	}
	if (output) {
	*output = NULL;
	}
	if (error_output) {
	*error_output = NULL;
	}
	if (action != NULL) {
	if (rc) {
	*rc = action->rc;
	}
	if (output && action->output) {
	*output = action->output;
	action->output = NULL; // hand off memory management to caller
	}
	if (error_output && action->error) {
	*error_output = action->error;
	action->error = NULL; // hand off memory management to caller
	}
	}
	}

	#define FAILURE_MAX_RETRIES 2
	stonith_action_t *
	stonith_action_create(const char *agent,
	const char *_action,
	const char *victim,
	uint32_t victim_nodeid,
	int timeout, GHashTable * device_args, GHashTable * port_map)
	{
	stonith_action_t *action;

	action = calloc(1, sizeof(stonith_action_t));
	action->args = make_args(agent, _action, victim, victim_nodeid, device_args, port_map);
	crm_debug("Preparing '%s' action for %s using agent %s",
	_action, (victim? victim : "no target"), agent);
	action->agent = strdup(agent);
	action->action = strdup(_action);
	if (victim) {
	action->victim = strdup(victim);
	}
	action->timeout = action->remaining_timeout = timeout;
	action->max_retries = FAILURE_MAX_RETRIES;

	if (device_args) {
	char buffer[512];
	const char *value = NULL;

	snprintf(buffer, sizeof(buffer), "pcmk_%s_retries", _action);
	value = g_hash_table_lookup(device_args, buffer);

	if (value) {
	action->max_retries = atoi(value);
	}
	}

	return action;
	}

	static gboolean
	update_remaining_timeout(stonith_action_t * action)
	{
	int diff = time(NULL) - action->initial_start_time;

	if (action->tries >= action->max_retries) {
	crm_info("Attempted to execute agent %s (%s) the maximum number of times (%d) allowed",
	action->agent, action->action, action->max_retries);
	action->remaining_timeout = 0;
	} else if ((action->rc != -ETIME) && diff < (action->timeout * 0.7)) {
	/* only set remaining timeout period if there is 30%
	* or greater of the original timeout period left */
	action->remaining_timeout = action->timeout - diff;
	} else {
	action->remaining_timeout = 0;
	}
	return action->remaining_timeout ? TRUE : FALSE;
	}

	static int
	svc_action_to_errno(svc_action_t *svc_action) {
	int rv = pcmk_ok;

	if (svc_action->rc > 0) {
	/* Try to provide a useful error code based on the fence agent's
	* error output.
	*/
	if (svc_action->rc == PCMK_OCF_TIMEOUT) {
	rv = -ETIME;

	} else if (svc_action->stderr_data == NULL) {
	rv = -ENODATA;

	} else if (strstr(svc_action->stderr_data, "imed out")) {
	/* Some agents have their own internal timeouts */
	rv = -ETIME;

	} else if (strstr(svc_action->stderr_data, "Unrecognised action")) {
	rv = -EOPNOTSUPP;

	} else {
	rv = -pcmk_err_generic;
	}
	}
	return rv;
	}

	static void
	stonith_action_async_done(svc_action_t *svc_action)
	{
	stonith_action_t action = (stonith_action_t ) svc_action->cb_data;

	action->rc = svc_action_to_errno(svc_action);
	action->output = svc_action->stdout_data;
	svc_action->stdout_data = NULL;
	action->error = svc_action->stderr_data;
	svc_action->stderr_data = NULL;

	svc_action->params = NULL;

	crm_debug("Child process %d performing action '%s' exited with rc %d",
	action->pid, action->action, svc_action->rc);

	log_action(action, action->pid);

	if (action->rc != pcmk_ok && update_remaining_timeout(action)) {
	int rc = internal_stonith_action_execute(action);
	if (rc == pcmk_ok) {
	return;
	}
	}

	if (action->done_cb) {
	action->done_cb(action->pid, action->rc, action->output, action->userdata);
	}

	action->svc_action = NULL; // don't remove our caller
	stonith__destroy_action(action);
	}

	static void
	stonith_action_async_forked(svc_action_t *svc_action)
	{
	stonith_action_t action = (stonith_action_t ) svc_action->cb_data;

	action->pid = svc_action->pid;
	action->svc_action = svc_action;

	if (action->fork_cb) {
	(action->fork_cb) (svc_action->pid, action->userdata);
	}

	crm_trace("Child process %d performing action '%s' successfully forked",
	action->pid, action->action);
	}

	static int
	internal_stonith_action_execute(stonith_action_t * action)
	{
	int rc = -EPROTO;
	int is_retry = 0;
	svc_action_t *svc_action = NULL;
	static int stonith_sequence = 0;
	char *buffer = NULL;

	if (!action->tries) {
	action->initial_start_time = time(NULL);
	}
	action->tries++;

	if (action->tries > 1) {
	crm_info("Attempt %d to execute %s (%s). remaining timeout is %d",
	action->tries, action->agent, action->action, action->remaining_timeout);
	is_retry = 1;
	}

	if (action->args == NULL \|\| action->agent == NULL)
	goto fail;

	buffer = crm_strdup_printf(RH_STONITH_DIR "/%s", basename(action->agent));
	svc_action = services_action_create_generic(buffer, NULL);
	free(buffer);
	svc_action->timeout = 1000 * action->remaining_timeout;
	svc_action->standard = strdup(PCMK_RESOURCE_CLASS_STONITH);
	svc_action->id = crm_strdup_printf("%s_%s_%d", basename(action->agent),
	action->action, action->tries);
	svc_action->agent = strdup(action->agent);
	svc_action->sequence = stonith_sequence++;
	svc_action->params = action->args;
	svc_action->cb_data = (void *) action;

	/* keep retries from executing out of control and free previous results */
	if (is_retry) {
	free(action->output);
	action->output = NULL;
	free(action->error);
	action->error = NULL;
	sleep(1);
	}

	if (action->async) {
	/* async */
	if(services_action_async_fork_notify(svc_action,
	&stonith_action_async_done,
	&stonith_action_async_forked) == FALSE) {
	services_action_free(svc_action);
	svc_action = NULL;
	} else {
	rc = 0;
	}

	} else {
	/* sync */
	if (services_action_sync(svc_action)) {
	rc = 0;
	action->rc = svc_action_to_errno(svc_action);
	action->output = svc_action->stdout_data;
	svc_action->stdout_data = NULL;
	action->error = svc_action->stderr_data;
	svc_action->stderr_data = NULL;
	} else {
	action->rc = -ECONNABORTED;
	rc = action->rc;
	}

	svc_action->params = NULL;
	services_action_free(svc_action);
	}

	fail:
	return rc;
	}

	/*!
	* \internal
	* \brief Kick off execution of an async stonith action
	*
	* \param[in,out] action Action to be executed
	* \param[in,out] userdata Datapointer to be passed to callbacks
	* \param[in] done Callback to notify action has failed/succeeded
	* \param[in] fork_callback Callback to notify successful fork of child
	*
	* \return pcmk_ok if ownership of action has been taken, -errno otherwise
	*/
	int
	stonith_action_execute_async(stonith_action_t * action,
	void *userdata,
	void (done) (GPid pid, int rc, const char output,
	gpointer user_data),
	void (*fork_cb) (GPid pid, gpointer user_data))
	{
	if (!action) {
	return -1;
	}

	action->userdata = userdata;
	action->done_cb = done;
	action->fork_cb = fork_cb;
	action->async = 1;

	return internal_stonith_action_execute(action);
	}

	/*!
	* \internal
	* \brief Execute a stonith action
	*
	* \param[in,out] action Action to execute
	*
	* \return pcmk_ok on success, -errno otherwise
	*/
	int
	stonith__execute(stonith_action_t *action)
	{
	int rc = pcmk_ok;

	CRM_CHECK(action != NULL, return -EINVAL);

	// Keep trying until success, max retries, or timeout
	do {
	rc = internal_stonith_action_execute(action);
	} while ((rc != pcmk_ok) && update_remaining_timeout(action));

	return rc;
	}

	static int
	stonith_api_device_list(stonith_t * stonith, int call_options, const char *namespace,
	stonith_key_value_t ** devices, int timeout)
	{
	int count = 0;
	enum stonith_namespace ns = stonith_text2namespace(namespace);

	if (devices == NULL) {
	crm_err("Parameter error: stonith_api_device_list");
	return -EFAULT;
	}

	#if HAVE_STONITH_STONITH_H
	// Include Linux-HA agents if requested
	if ((ns == st_namespace_any) \|\| (ns == st_namespace_lha)) {
	count += stonith__list_lha_agents(devices);
	}
	#endif

	// Include Red Hat agents if requested
	if ((ns == st_namespace_any) \|\| (ns == st_namespace_rhcs)) {
	count += stonith__list_rhcs_agents(devices);
	}

	return count;
	}

	static int
	stonith_api_device_metadata(stonith_t * stonith, int call_options, const char *agent,
	const char namespace, char *output, int timeout)
	{
	/* By executing meta-data directly, we can get it from stonith_admin when
	* the cluster is not running, which is important for higher-level tools.
	*/

	enum stonith_namespace ns = stonith_get_namespace(agent, namespace);

	crm_trace("Looking up metadata for %s agent %s",
	stonith_namespace2text(ns), agent);

	switch (ns) {
	case st_namespace_rhcs:
	return stonith__rhcs_metadata(agent, timeout, output);

	#if HAVE_STONITH_STONITH_H
	case st_namespace_lha:
	return stonith__lha_metadata(agent, timeout, output);
	#endif

	default:
	errno = EINVAL;
	crm_perror(LOG_ERR,
	"Agent %s not found or does not support meta-data",
	agent);
	break;
	}
	return -EINVAL;
	}

	static int
	stonith_api_query(stonith_t * stonith, int call_options, const char *target,
	stonith_key_value_t ** devices, int timeout)
	{
	int rc = 0, lpc = 0, max = 0;

	xmlNode *data = NULL;
	xmlNode *output = NULL;
	xmlXPathObjectPtr xpathObj = NULL;

	CRM_CHECK(devices != NULL, return -EINVAL);

	data = create_xml_node(NULL, F_STONITH_DEVICE);
	crm_xml_add(data, F_STONITH_ORIGIN, __FUNCTION__);
	crm_xml_add(data, F_STONITH_TARGET, target);
	crm_xml_add(data, F_STONITH_ACTION, "off");
	rc = stonith_send_command(stonith, STONITH_OP_QUERY, data, &output, call_options, timeout);

	if (rc < 0) {
	return rc;
	}

	xpathObj = xpath_search(output, "//@agent");
	if (xpathObj) {
	max = numXpathResults(xpathObj);

	for (lpc = 0; lpc < max; lpc++) {
	xmlNode *match = getXpathResult(xpathObj, lpc);

	CRM_LOG_ASSERT(match != NULL);
	if(match != NULL) {
	xmlChar *match_path = xmlGetNodePath(match);

	crm_info("%s[%d] = %s", "//@agent", lpc, match_path);
	free(match_path);
	devices = stonith_key_value_add(devices, NULL, crm_element_value(match, XML_ATTR_ID));
	}
	}

	freeXpathObject(xpathObj);
	}

	free_xml(output);
	free_xml(data);
	return max;
	}

	static int
	stonith_api_call(stonith_t * stonith,
	int call_options,
	const char *id,
	const char action, const char victim, int timeout, xmlNode ** output)
	{
	int rc = 0;
	xmlNode *data = NULL;

	data = create_xml_node(NULL, F_STONITH_DEVICE);
	crm_xml_add(data, F_STONITH_ORIGIN, __FUNCTION__);
	crm_xml_add(data, F_STONITH_DEVICE, id);
	crm_xml_add(data, F_STONITH_ACTION, action);
	crm_xml_add(data, F_STONITH_TARGET, victim);

	rc = stonith_send_command(stonith, STONITH_OP_EXEC, data, output, call_options, timeout);
	free_xml(data);

	return rc;
	}

	static int
	stonith_api_list(stonith_t * stonith, int call_options, const char id, char *list_info,
	int timeout)
	{
	int rc;
	xmlNode *output = NULL;

	rc = stonith_api_call(stonith, call_options, id, "list", NULL, timeout, &output);

	if (output && list_info) {
	const char *list_str;

	list_str = crm_element_value(output, "st_output");

	if (list_str) {
	*list_info = strdup(list_str);
	}
	}

	if (output) {
	free_xml(output);
	}

	return rc;
	}

	static int
	stonith_api_monitor(stonith_t * stonith, int call_options, const char *id, int timeout)
	{
	return stonith_api_call(stonith, call_options, id, "monitor", NULL, timeout, NULL);
	}

	static int
	stonith_api_status(stonith_t * stonith, int call_options, const char id, const char port,
	int timeout)
	{
	return stonith_api_call(stonith, call_options, id, "status", port, timeout, NULL);
	}

	static int
	stonith_api_fence(stonith_t * stonith, int call_options, const char node, const char action,
	int timeout, int tolerance)
	{
	int rc = 0;
	xmlNode *data = NULL;

	data = create_xml_node(NULL, __FUNCTION__);
	crm_xml_add(data, F_STONITH_TARGET, node);
	crm_xml_add(data, F_STONITH_ACTION, action);
	crm_xml_add_int(data, F_STONITH_TIMEOUT, timeout);
	crm_xml_add_int(data, F_STONITH_TOLERANCE, tolerance);

	rc = stonith_send_command(stonith, STONITH_OP_FENCE, data, NULL, call_options, timeout);
	free_xml(data);

	return rc;
	}

	static int
	stonith_api_confirm(stonith_t * stonith, int call_options, const char *target)
	{
	return stonith_api_fence(stonith, call_options \| st_opt_manual_ack, target, "off", 0, 0);
	}

	static int
	stonith_api_history(stonith_t * stonith, int call_options, const char *node,
	stonith_history_t ** history, int timeout)
	{
	int rc = 0;
	xmlNode *data = NULL;
	xmlNode *output = NULL;
	stonith_history_t *last = NULL;

	*history = NULL;

	if (node) {
	data = create_xml_node(NULL, __FUNCTION__);
	crm_xml_add(data, F_STONITH_TARGET, node);
	}

	rc = stonith_send_command(stonith, STONITH_OP_FENCE_HISTORY, data, &output,
	call_options \| st_opt_sync_call, timeout);
	free_xml(data);

	if (rc == 0) {
	xmlNode *op = NULL;
	xmlNode *reply = get_xpath_object("//" F_STONITH_HISTORY_LIST, output, LOG_TRACE);

	for (op = __xml_first_child(reply); op != NULL; op = __xml_next(op)) {
	stonith_history_t *kvp;

	kvp = calloc(1, sizeof(stonith_history_t));
	kvp->target = crm_element_value_copy(op, F_STONITH_TARGET);
	kvp->action = crm_element_value_copy(op, F_STONITH_ACTION);
	kvp->origin = crm_element_value_copy(op, F_STONITH_ORIGIN);
	kvp->delegate = crm_element_value_copy(op, F_STONITH_DELEGATE);
	kvp->client = crm_element_value_copy(op, F_STONITH_CLIENTNAME);
	crm_element_value_int(op, F_STONITH_DATE, &kvp->completed);
	crm_element_value_int(op, F_STONITH_STATE, &kvp->state);

	if (last) {
	last->next = kvp;
	} else {
	*history = kvp;
	}
	last = kvp;
	}
	}

	free_xml(output);

	return rc;
	}

	void stonith_history_free(stonith_history_t *history)
	{
	stonith_history_t hp, hp_old;

	for (hp = history; hp; hp_old = hp, hp = hp->next, free(hp_old)) {
	free(hp->target);
	free(hp->action);
	free(hp->origin);
	free(hp->delegate);
	free(hp->client);
	}
	}

	/*!
	* \brief Deprecated (use stonith_get_namespace() instead)
	*/
	const char *
	get_stonith_provider(const char agent, const char provider)
	{
	return stonith_namespace2text(stonith_get_namespace(agent, provider));
	}

	static gint
	stonithlib_GCompareFunc(gconstpointer a, gconstpointer b)
	{
	int rc = 0;
	const stonith_notify_client_t *a_client = a;
	const stonith_notify_client_t *b_client = b;

	+ if (a_client->delete \|\| b_client->delete) {
	+ /* make entries marked for deletion not findable */
	+ return -1;
	+ }
	CRM_CHECK(a_client->event != NULL && b_client->event != NULL, return 0);
	rc = strcmp(a_client->event, b_client->event);
	if (rc == 0) {
	if (a_client->notify == NULL \|\| b_client->notify == NULL) {
	return 0;

	} else if (a_client->notify == b_client->notify) {
	return 0;

	} else if (((long)a_client->notify) < ((long)b_client->notify)) {
	crm_err("callbacks for %s are not equal: %p vs. %p",
	a_client->event, a_client->notify, b_client->notify);
	return -1;
	}
	crm_err("callbacks for %s are not equal: %p vs. %p",
	a_client->event, a_client->notify, b_client->notify);
	return 1;
	}
	return rc;
	}

	xmlNode *
	stonith_create_op(int call_id, const char token, const char op, xmlNode * data, int call_options)
	{
	xmlNode *op_msg = create_xml_node(NULL, "stonith_command");

	CRM_CHECK(op_msg != NULL, return NULL);
	CRM_CHECK(token != NULL, return NULL);

	crm_xml_add(op_msg, F_XML_TAGNAME, "stonith_command");

	crm_xml_add(op_msg, F_TYPE, T_STONITH_NG);
	crm_xml_add(op_msg, F_STONITH_CALLBACK_TOKEN, token);
	crm_xml_add(op_msg, F_STONITH_OPERATION, op);
	crm_xml_add_int(op_msg, F_STONITH_CALLID, call_id);
	crm_trace("Sending call options: %.8lx, %d", (long)call_options, call_options);
	crm_xml_add_int(op_msg, F_STONITH_CALLOPTS, call_options);

	if (data != NULL) {
	add_message_xml(op_msg, F_STONITH_CALLDATA, data);
	}

	return op_msg;
	}

	static void
	stonith_destroy_op_callback(gpointer data)
	{
	stonith_callback_client_t *blob = data;

	if (blob->timer && blob->timer->ref > 0) {
	g_source_remove(blob->timer->ref);
	}
	free(blob->timer);
	free(blob);
	}

	static int
	stonith_api_signoff(stonith_t * stonith)
	{
	stonith_private_t *native = stonith->private;

	crm_debug("Signing out of the STONITH Service");

	if (native->source != NULL) {
	/* Attached to mainloop */
	mainloop_del_ipc_client(native->source);
	native->source = NULL;
	native->ipc = NULL;

	} else if (native->ipc) {
	/* Not attached to mainloop */
	crm_ipc_t *ipc = native->ipc;

	native->ipc = NULL;
	crm_ipc_close(ipc);
	crm_ipc_destroy(ipc);
	}

	free(native->token); native->token = NULL;
	stonith->state = stonith_disconnected;
	return pcmk_ok;
	}

	static int
	stonith_api_signon(stonith_t * stonith, const char name, int stonith_fd)
	{
	int rc = pcmk_ok;
	stonith_private_t *native = stonith->private;

	static struct ipc_client_callbacks st_callbacks = {
	.dispatch = stonith_dispatch_internal,
	.destroy = stonith_connection_destroy
	};

	crm_trace("Connecting command channel");

	stonith->state = stonith_connected_command;
	if (stonith_fd) {
	/* No mainloop */
	native->ipc = crm_ipc_new("stonith-ng", 0);

	if (native->ipc && crm_ipc_connect(native->ipc)) {
	*stonith_fd = crm_ipc_get_fd(native->ipc);
	} else if (native->ipc) {
	crm_perror(LOG_ERR, "Connection to STONITH manager failed");
	rc = -ENOTCONN;
	}

	} else {
	/* With mainloop */
	native->source =
	mainloop_add_ipc_client("stonith-ng", G_PRIORITY_MEDIUM, 0, stonith, &st_callbacks);
	native->ipc = mainloop_get_ipc_client(native->source);
	}

	if (native->ipc == NULL) {
	crm_debug("Could not connect to the Stonith API");
	rc = -ENOTCONN;
	}

	if (rc == pcmk_ok) {
	xmlNode *reply = NULL;
	xmlNode *hello = create_xml_node(NULL, "stonith_command");

	crm_xml_add(hello, F_TYPE, T_STONITH_NG);
	crm_xml_add(hello, F_STONITH_OPERATION, CRM_OP_REGISTER);
	crm_xml_add(hello, F_STONITH_CLIENTNAME, name);
	rc = crm_ipc_send(native->ipc, hello, crm_ipc_client_response, -1, &reply);

	if (rc < 0) {
	crm_perror(LOG_DEBUG, "Couldn't complete registration with the fencing API: %d", rc);
	rc = -ECOMM;

	} else if (reply == NULL) {
	crm_err("Did not receive registration reply");
	rc = -EPROTO;

	} else {
	const char *msg_type = crm_element_value(reply, F_STONITH_OPERATION);
	const char *tmp_ticket = crm_element_value(reply, F_STONITH_CLIENTID);

	if (safe_str_neq(msg_type, CRM_OP_REGISTER)) {
	crm_err("Invalid registration message: %s", msg_type);
	crm_log_xml_err(reply, "Bad reply");
	rc = -EPROTO;

	} else if (tmp_ticket == NULL) {
	crm_err("No registration token provided");
	crm_log_xml_err(reply, "Bad reply");
	rc = -EPROTO;

	} else {
	crm_trace("Obtained registration token: %s", tmp_ticket);
	native->token = strdup(tmp_ticket);
	rc = pcmk_ok;
	}
	}

	free_xml(reply);
	free_xml(hello);
	}

	if (rc == pcmk_ok) {
	#if HAVE_MSGFROMIPC_TIMEOUT
	stonith->call_timeout = MAX_IPC_DELAY;
	#endif
	crm_debug("Connection to STONITH successful");
	return pcmk_ok;
	}

	crm_debug("Connection to STONITH failed: %s", pcmk_strerror(rc));
	stonith->cmds->disconnect(stonith);
	return rc;
	}

	static int
	stonith_set_notification(stonith_t * stonith, const char *callback, int enabled)
	{
	int rc = pcmk_ok;
	xmlNode *notify_msg = create_xml_node(NULL, __FUNCTION__);
	stonith_private_t *native = stonith->private;

	if (stonith->state != stonith_disconnected) {

	crm_xml_add(notify_msg, F_STONITH_OPERATION, T_STONITH_NOTIFY);
	if (enabled) {
	crm_xml_add(notify_msg, F_STONITH_NOTIFY_ACTIVATE, callback);
	} else {
	crm_xml_add(notify_msg, F_STONITH_NOTIFY_DEACTIVATE, callback);
	}

	rc = crm_ipc_send(native->ipc, notify_msg, crm_ipc_client_response, -1, NULL);
	if (rc < 0) {
	crm_perror(LOG_DEBUG, "Couldn't register for fencing notifications: %d", rc);
	rc = -ECOMM;
	} else {
	rc = pcmk_ok;
	}
	}

	free_xml(notify_msg);
	return rc;
	}

	static int
	stonith_api_add_notification(stonith_t * stonith, const char *event,
	void (callback) (stonith_t stonith, stonith_event_t * e))
	{
	GList *list_item = NULL;
	stonith_notify_client_t *new_client = NULL;
	stonith_private_t *private = NULL;

	private = stonith->private;
	crm_trace("Adding callback for %s events (%d)", event, g_list_length(private->notify_list));

	new_client = calloc(1, sizeof(stonith_notify_client_t));
	new_client->event = event;
	new_client->notify = callback;

	list_item = g_list_find_custom(private->notify_list, new_client, stonithlib_GCompareFunc);

	if (list_item != NULL) {
	crm_warn("Callback already present");
	free(new_client);
	return -ENOTUNIQ;

	} else {
	private->notify_list = g_list_append(private->notify_list, new_client);

	stonith_set_notification(stonith, event, 1);

	crm_trace("Callback added (%d)", g_list_length(private->notify_list));
	}
	return pcmk_ok;
	}

	static int
	stonith_api_del_notification(stonith_t * stonith, const char *event)
	{
	GList *list_item = NULL;
	stonith_notify_client_t *new_client = NULL;
	stonith_private_t *private = NULL;

	crm_debug("Removing callback for %s events", event);

	private = stonith->private;
	new_client = calloc(1, sizeof(stonith_notify_client_t));
	new_client->event = event;
	new_client->notify = NULL;

	list_item = g_list_find_custom(private->notify_list, new_client, stonithlib_GCompareFunc);

	stonith_set_notification(stonith, event, 0);

	if (list_item != NULL) {
	stonith_notify_client_t *list_client = list_item->data;

	- private->notify_list = g_list_remove(private->notify_list, list_client);
	- free(list_client);
	+ if (private->notify_refcnt) {
	+ list_client->delete = TRUE;
	+ private->notify_deletes = TRUE;
	+ } else {
	+ private->notify_list = g_list_remove(private->notify_list, list_client);
	+ free(list_client);
	+ }

	crm_trace("Removed callback");

	} else {
	crm_trace("Callback not present");
	}
	free(new_client);
	return pcmk_ok;
	}

	static gboolean
	stonith_async_timeout_handler(gpointer data)
	{
	struct timer_rec_s *timer = data;

	crm_err("Async call %d timed out after %dms", timer->call_id, timer->timeout);
	stonith_perform_callback(timer->stonith, NULL, timer->call_id, -ETIME);

	/* Always return TRUE, never remove the handler
	* We do that in stonith_del_callback()
	*/
	return TRUE;
	}

	static void
	set_callback_timeout(stonith_callback_client_t * callback, stonith_t * stonith, int call_id,
	int timeout)
	{
	struct timer_rec_s *async_timer = callback->timer;

	if (timeout <= 0) {
	return;
	}

	if (!async_timer) {
	async_timer = calloc(1, sizeof(struct timer_rec_s));
	callback->timer = async_timer;
	}

	async_timer->stonith = stonith;
	async_timer->call_id = call_id;
	/* Allow a fair bit of grace to allow the server to tell us of a timeout
	* This is only a fallback
	*/
	async_timer->timeout = (timeout + 60) * 1000;
	if (async_timer->ref) {
	g_source_remove(async_timer->ref);
	}
	async_timer->ref =
	g_timeout_add(async_timer->timeout, stonith_async_timeout_handler, async_timer);
	}

	static void
	update_callback_timeout(int call_id, int timeout, stonith_t * st)
	{
	stonith_callback_client_t *callback = NULL;
	stonith_private_t *private = st->private;

	callback = g_hash_table_lookup(private->stonith_op_callback_table, GINT_TO_POINTER(call_id));
	if (!callback \|\| !callback->allow_timeout_updates) {
	return;
	}

	set_callback_timeout(callback, st, call_id, timeout);
	}

	static void
	invoke_callback(stonith_t * st, int call_id, int rc, void *userdata,
	void (callback) (stonith_t st, stonith_callback_data_t * data))
	{
	stonith_callback_data_t data = { 0, };

	data.call_id = call_id;
	data.rc = rc;
	data.userdata = userdata;

	callback(st, &data);
	}

	static int
	stonith_api_add_callback(stonith_t * stonith, int call_id, int timeout, int options,
	void user_data, const char callback_name,
	void (callback) (stonith_t st, stonith_callback_data_t * data))
	{
	stonith_callback_client_t *blob = NULL;
	stonith_private_t *private = NULL;

	CRM_CHECK(stonith != NULL, return -EINVAL);
	CRM_CHECK(stonith->private != NULL, return -EINVAL);
	private = stonith->private;

	if (call_id == 0) {
	private->op_callback = callback;

	} else if (call_id < 0) {
	if (!(options & st_opt_report_only_success)) {
	crm_trace("Call failed, calling %s: %s", callback_name, pcmk_strerror(call_id));
	invoke_callback(stonith, call_id, call_id, user_data, callback);
	} else {
	crm_warn("STONITH call failed: %s", pcmk_strerror(call_id));
	}
	return FALSE;
	}

	blob = calloc(1, sizeof(stonith_callback_client_t));
	blob->id = callback_name;
	blob->only_success = (options & st_opt_report_only_success) ? TRUE : FALSE;
	blob->user_data = user_data;
	blob->callback = callback;
	blob->allow_timeout_updates = (options & st_opt_timeout_updates) ? TRUE : FALSE;

	if (timeout > 0) {
	set_callback_timeout(blob, stonith, call_id, timeout);
	}

	g_hash_table_insert(private->stonith_op_callback_table, GINT_TO_POINTER(call_id), blob);
	crm_trace("Added callback to %s for call %d", callback_name, call_id);

	return TRUE;
	}

	static int
	stonith_api_del_callback(stonith_t * stonith, int call_id, bool all_callbacks)
	{
	stonith_private_t *private = stonith->private;

	if (all_callbacks) {
	private->op_callback = NULL;
	g_hash_table_destroy(private->stonith_op_callback_table);
	private->stonith_op_callback_table = g_hash_table_new_full(g_direct_hash, g_direct_equal,
	NULL,
	stonith_destroy_op_callback);

	} else if (call_id == 0) {
	private->op_callback = NULL;

	} else {
	g_hash_table_remove(private->stonith_op_callback_table, GINT_TO_POINTER(call_id));
	}
	return pcmk_ok;
	}

	static void
	stonith_dump_pending_op(gpointer key, gpointer value, gpointer user_data)
	{
	int call = GPOINTER_TO_INT(key);
	stonith_callback_client_t *blob = value;

	crm_debug("Call %d (%s): pending", call, crm_str(blob->id));
	}

	void
	stonith_dump_pending_callbacks(stonith_t * stonith)
	{
	stonith_private_t *private = stonith->private;

	if (private->stonith_op_callback_table == NULL) {
	return;
	}
	return g_hash_table_foreach(private->stonith_op_callback_table, stonith_dump_pending_op, NULL);
	}

	void
	stonith_perform_callback(stonith_t * stonith, xmlNode * msg, int call_id, int rc)
	{
	stonith_private_t *private = NULL;
	stonith_callback_client_t *blob = NULL;
	stonith_callback_client_t local_blob;

	CRM_CHECK(stonith != NULL, return);
	CRM_CHECK(stonith->private != NULL, return);

	private = stonith->private;

	local_blob.id = NULL;
	local_blob.callback = NULL;
	local_blob.user_data = NULL;
	local_blob.only_success = FALSE;

	if (msg != NULL) {
	crm_element_value_int(msg, F_STONITH_RC, &rc);
	crm_element_value_int(msg, F_STONITH_CALLID, &call_id);
	}

	CRM_CHECK(call_id > 0, crm_log_xml_err(msg, "Bad result"));

	blob = g_hash_table_lookup(private->stonith_op_callback_table, GINT_TO_POINTER(call_id));

	if (blob != NULL) {
	local_blob = *blob;
	blob = NULL;

	stonith_api_del_callback(stonith, call_id, FALSE);

	} else {
	crm_trace("No callback found for call %d", call_id);
	local_blob.callback = NULL;
	}

	if (local_blob.callback != NULL && (rc == pcmk_ok \|\| local_blob.only_success == FALSE)) {
	crm_trace("Invoking callback %s for call %d", crm_str(local_blob.id), call_id);
	invoke_callback(stonith, call_id, rc, local_blob.user_data, local_blob.callback);

	} else if (private->op_callback == NULL && rc != pcmk_ok) {
	crm_warn("STONITH command failed: %s", pcmk_strerror(rc));
	crm_log_xml_debug(msg, "Failed STONITH Update");
	}

	if (private->op_callback != NULL) {
	crm_trace("Invoking global callback for call %d", call_id);
	invoke_callback(stonith, call_id, rc, NULL, private->op_callback);
	}
	crm_trace("OP callback activated.");
	}

	/*
	<notify t="st_notify" subt="st_device_register" st_op="st_device_register" st_rc="0" >
	<st_calldata >
	<stonith_command t="stonith-ng" st_async_id="088fb640-431a-48b9-b2fc-c4ff78d0a2d9" st_op="st_device_register" st_callid="2" st_callopt="4096" st_timeout="0" st_clientid="088fb640-431a-48b9-b2fc-c4ff78d0a2d9" st_clientname="stonith-test" >
	<st_calldata >
	<st_device_id id="test-id" origin="create_device_registration_xml" agent="fence_virsh" namespace="stonith-ng" >
	<attributes ipaddr="localhost" pcmk-portmal="some-host=pcmk-1 pcmk-3=3,4" login="root" identity_file="/root/.ssh/id_dsa" />
	</st_device_id>
	</st_calldata>
	</stonith_command>
	</st_calldata>
	</notify>

	<notify t="st_notify" subt="st_notify_fence" st_op="st_notify_fence" st_rc="0" >
	<st_calldata >
	<st_notify_fence st_rc="0" st_target="some-host" st_op="st_fence" st_delegate="test-id" st_origin="61dd7759-e229-4be7-b1f8-ef49dd14d9f0" />
	</st_calldata>
	</notify>
	*/
	static stonith_event_t *
	xml_to_event(xmlNode * msg)
	{
	stonith_event_t *event = calloc(1, sizeof(stonith_event_t));
	const char *ntype = crm_element_value(msg, F_SUBTYPE);
	char *data_addr = crm_strdup_printf("//%s", ntype);
	xmlNode *data = get_xpath_object(data_addr, msg, LOG_DEBUG);

	crm_log_xml_trace(msg, "stonith_notify");

	crm_element_value_int(msg, F_STONITH_RC, &(event->result));

	if (safe_str_eq(ntype, T_STONITH_NOTIFY_FENCE)) {
	event->operation = crm_element_value_copy(msg, F_STONITH_OPERATION);

	if (data) {
	event->origin = crm_element_value_copy(data, F_STONITH_ORIGIN);
	event->action = crm_element_value_copy(data, F_STONITH_ACTION);
	event->target = crm_element_value_copy(data, F_STONITH_TARGET);
	event->executioner = crm_element_value_copy(data, F_STONITH_DELEGATE);
	event->id = crm_element_value_copy(data, F_STONITH_REMOTE_OP_ID);
	event->client_origin = crm_element_value_copy(data, F_STONITH_CLIENTNAME);
	event->device = crm_element_value_copy(data, F_STONITH_DEVICE);

	} else {
	crm_err("No data for %s event", ntype);
	crm_log_xml_notice(msg, "BadEvent");
	}
	}

	free(data_addr);
	return event;
	}

	static void
	event_free(stonith_event_t * event)
	{
	free(event->id);
	free(event->type);
	free(event->message);
	free(event->operation);
	free(event->origin);
	free(event->action);
	free(event->target);
	free(event->executioner);
	free(event->device);
	free(event->client_origin);
	free(event);
	}

	static void
	stonith_send_notification(gpointer data, gpointer user_data)
	{
	struct notify_blob_s *blob = user_data;
	stonith_notify_client_t *entry = data;
	stonith_event_t *st_event = NULL;
	const char *event = NULL;

	if (blob->xml == NULL) {
	crm_warn("Skipping callback - NULL message");
	return;
	}

	event = crm_element_value(blob->xml, F_SUBTYPE);

	if (entry == NULL) {
	crm_warn("Skipping callback - NULL callback client");
	return;

	+ } else if (entry->delete) {
	+ crm_trace("Skipping callback - marked for deletion");
	+ return;
	+
	} else if (entry->notify == NULL) {
	crm_warn("Skipping callback - NULL callback");
	return;

	} else if (safe_str_neq(entry->event, event)) {
	crm_trace("Skipping callback - event mismatch %p/%s vs. %s", entry, entry->event, event);
	return;
	}

	st_event = xml_to_event(blob->xml);

	crm_trace("Invoking callback for %p/%s event...", entry, event);
	entry->notify(blob->stonith, st_event);
	crm_trace("Callback invoked...");

	event_free(st_event);
	}

	int
	stonith_send_command(stonith_t * stonith, const char op, xmlNode data, xmlNode ** output_data,
	int call_options, int timeout)
	{
	int rc = 0;
	int reply_id = -1;
	enum crm_ipc_flags ipc_flags = crm_ipc_flags_none;

	xmlNode *op_msg = NULL;
	xmlNode *op_reply = NULL;

	stonith_private_t *native = stonith->private;

	if (stonith->state == stonith_disconnected) {
	return -ENOTCONN;
	}

	if (output_data != NULL) {
	*output_data = NULL;
	}

	if (op == NULL) {
	crm_err("No operation specified");
	return -EINVAL;
	}

	if (call_options & st_opt_sync_call) {
	ipc_flags \|= crm_ipc_client_response;
	}

	stonith->call_id++;
	/* prevent call_id from being negative (or zero) and conflicting
	* with the stonith_errors enum
	* use 2 because we use it as (stonith->call_id - 1) below
	*/
	if (stonith->call_id < 1) {
	stonith->call_id = 1;
	}

	CRM_CHECK(native->token != NULL,;
	);
	op_msg = stonith_create_op(stonith->call_id, native->token, op, data, call_options);
	if (op_msg == NULL) {
	return -EINVAL;
	}

	crm_xml_add_int(op_msg, F_STONITH_TIMEOUT, timeout);
	crm_trace("Sending %s message to STONITH service, Timeout: %ds", op, timeout);

	rc = crm_ipc_send(native->ipc, op_msg, ipc_flags, 1000 * (timeout + 60), &op_reply);
	free_xml(op_msg);

	if (rc < 0) {
	crm_perror(LOG_ERR, "Couldn't perform %s operation (timeout=%ds): %d", op, timeout, rc);
	rc = -ECOMM;
	goto done;
	}

	crm_log_xml_trace(op_reply, "Reply");

	if (!(call_options & st_opt_sync_call)) {
	crm_trace("Async call %d, returning", stonith->call_id);
	CRM_CHECK(stonith->call_id != 0, return -EPROTO);
	free_xml(op_reply);

	return stonith->call_id;
	}

	rc = pcmk_ok;
	crm_element_value_int(op_reply, F_STONITH_CALLID, &reply_id);

	if (reply_id == stonith->call_id) {
	crm_trace("Synchronous reply %d received", reply_id);

	if (crm_element_value_int(op_reply, F_STONITH_RC, &rc) != 0) {
	rc = -ENOMSG;
	}

	if ((call_options & st_opt_discard_reply) \|\| output_data == NULL) {
	crm_trace("Discarding reply");

	} else {
	*output_data = op_reply;
	op_reply = NULL; /* Prevent subsequent free */
	}

	} else if (reply_id <= 0) {
	crm_err("Received bad reply: No id set");
	crm_log_xml_err(op_reply, "Bad reply");
	free_xml(op_reply);
	rc = -ENOMSG;

	} else {
	crm_err("Received bad reply: %d (wanted %d)", reply_id, stonith->call_id);
	crm_log_xml_err(op_reply, "Old reply");
	free_xml(op_reply);
	rc = -ENOMSG;
	}

	done:
	if (crm_ipc_connected(native->ipc) == FALSE) {
	crm_err("STONITH disconnected");
	stonith->state = stonith_disconnected;
	}

	free_xml(op_reply);
	return rc;
	}

	/* Not used with mainloop */
	bool
	stonith_dispatch(stonith_t * st)
	{
	gboolean stay_connected = TRUE;
	stonith_private_t *private = NULL;

	CRM_ASSERT(st != NULL);
	private = st->private;

	while (crm_ipc_ready(private->ipc)) {

	if (crm_ipc_read(private->ipc) > 0) {
	const char *msg = crm_ipc_buffer(private->ipc);

	stonith_dispatch_internal(msg, strlen(msg), st);
	}

	if (crm_ipc_connected(private->ipc) == FALSE) {
	crm_err("Connection closed");
	stay_connected = FALSE;
	}
	}

	return stay_connected;
	}

	int
	stonith_dispatch_internal(const char *buffer, ssize_t length, gpointer userdata)
	{
	const char *type = NULL;
	struct notify_blob_s blob;

	stonith_t *st = userdata;
	stonith_private_t *private = NULL;

	CRM_ASSERT(st != NULL);
	private = st->private;

	blob.stonith = st;
	blob.xml = string2xml(buffer);
	if (blob.xml == NULL) {
	crm_warn("Received a NULL msg from STONITH service: %s.", buffer);
	return 0;
	}

	/* do callbacks */
	type = crm_element_value(blob.xml, F_TYPE);
	crm_trace("Activating %s callbacks...", type);

	if (safe_str_eq(type, T_STONITH_NG)) {
	stonith_perform_callback(st, blob.xml, 0, 0);

	} else if (safe_str_eq(type, T_STONITH_NOTIFY)) {
	- g_list_foreach(private->notify_list, stonith_send_notification, &blob);
	+ foreach_notify_entry(private, stonith_send_notification, &blob);
	} else if (safe_str_eq(type, T_STONITH_TIMEOUT_VALUE)) {
	int call_id = 0;
	int timeout = 0;

	crm_element_value_int(blob.xml, F_STONITH_TIMEOUT, &timeout);
	crm_element_value_int(blob.xml, F_STONITH_CALLID, &call_id);

	update_callback_timeout(call_id, timeout, st);
	} else {
	crm_err("Unknown message type: %s", type);
	crm_log_xml_warn(blob.xml, "BadReply");
	}

	free_xml(blob.xml);
	return 1;
	}

	static int
	stonith_api_free(stonith_t * stonith)
	{
	int rc = pcmk_ok;

	crm_trace("Destroying %p", stonith);

	if (stonith->state != stonith_disconnected) {
	crm_trace("Disconnecting %p first", stonith);
	rc = stonith->cmds->disconnect(stonith);
	}

	if (stonith->state == stonith_disconnected) {
	stonith_private_t *private = stonith->private;

	crm_trace("Removing %d callbacks", g_hash_table_size(private->stonith_op_callback_table));
	g_hash_table_destroy(private->stonith_op_callback_table);

	crm_trace("Destroying %d notification clients", g_list_length(private->notify_list));
	g_list_free_full(private->notify_list, free);

	free(stonith->private);
	free(stonith->cmds);
	free(stonith);

	} else {
	crm_err("Not free'ing active connection: %s (%d)", pcmk_strerror(rc), rc);
	}

	return rc;
	}

	void
	stonith_api_delete(stonith_t * stonith)
	{
	crm_trace("Destroying %p", stonith);
	if(stonith) {
	stonith->cmds->free(stonith);
	}
	}

	static int
	stonith_api_validate(stonith_t st, int call_options, const char rsc_id,
	const char namespace_s, const char agent,
	stonith_key_value_t params, int timeout, char *output,
	char **error_output)
	{
	/* Validation should be done directly via the agent, so we can get it from
	* stonith_admin when the cluster is not running, which is important for
	* higher-level tools.
	*/

	int rc = pcmk_ok;

	/* Use a dummy node name in case the agent requires a target. We assume the
	* actual target doesn't matter for validation purposes (if in practice,
	* that is incorrect, we will need to allow the caller to pass the target).
	*/
	const char *target = "node1";

	GHashTable *params_table = crm_str_table_new();

	// Convert parameter list to a hash table
	for (; params; params = params->next) {

	// Strip out Pacemaker-implemented parameters
	if (!crm_starts_with(params->key, "pcmk_")
	&& strcmp(params->key, "provides")
	&& strcmp(params->key, "stonith-timeout")) {
	g_hash_table_insert(params_table, strdup(params->key),
	strdup(params->value));
	}
	}

	#if SUPPORT_CIBSECRETS
	rc = replace_secret_params(rsc_id, params_table);
	if (rc < 0) {
	crm_warn("Could not replace secret parameters for validation of %s: %s",
	agent, pcmk_strerror(rc));
	}
	#endif

	if (output) {
	*output = NULL;
	}
	if (error_output) {
	*error_output = NULL;
	}

	switch (stonith_get_namespace(agent, namespace_s)) {
	case st_namespace_rhcs:
	rc = stonith__rhcs_validate(st, call_options, target, agent,
	params_table, timeout, output,
	error_output);
	break;

	#if HAVE_STONITH_STONITH_H
	case st_namespace_lha:
	rc = stonith__lha_validate(st, call_options, target, agent,
	params_table, timeout, output,
	error_output);
	break;
	#endif

	default:
	rc = -EINVAL;
	errno = EINVAL;
	crm_perror(LOG_ERR,
	"Agent %s not found or does not support validation",
	agent);
	break;
	}
	g_hash_table_destroy(params_table);
	return rc;
	}

	stonith_t *
	stonith_api_new(void)
	{
	stonith_t *new_stonith = NULL;
	stonith_private_t *private = NULL;

	new_stonith = calloc(1, sizeof(stonith_t));
	private = calloc(1, sizeof(stonith_private_t));
	new_stonith->private = private;

	private->stonith_op_callback_table = g_hash_table_new_full(g_direct_hash, g_direct_equal,
	NULL, stonith_destroy_op_callback);
	private->notify_list = NULL;
	+ private->notify_refcnt = 0;
	+ private->notify_deletes = FALSE;

	new_stonith->call_id = 1;
	new_stonith->state = stonith_disconnected;

	new_stonith->cmds = calloc(1, sizeof(stonith_api_operations_t));

	/* INDENT-OFF */
	new_stonith->cmds->free = stonith_api_free;
	new_stonith->cmds->connect = stonith_api_signon;
	new_stonith->cmds->disconnect = stonith_api_signoff;

	new_stonith->cmds->list = stonith_api_list;
	new_stonith->cmds->monitor = stonith_api_monitor;
	new_stonith->cmds->status = stonith_api_status;
	new_stonith->cmds->fence = stonith_api_fence;
	new_stonith->cmds->confirm = stonith_api_confirm;
	new_stonith->cmds->history = stonith_api_history;

	new_stonith->cmds->list_agents = stonith_api_device_list;
	new_stonith->cmds->metadata = stonith_api_device_metadata;

	new_stonith->cmds->query = stonith_api_query;
	new_stonith->cmds->remove_device = stonith_api_remove_device;
	new_stonith->cmds->register_device = stonith_api_register_device;

	new_stonith->cmds->remove_level = stonith_api_remove_level;
	new_stonith->cmds->remove_level_full = stonith_api_remove_level_full;
	new_stonith->cmds->register_level = stonith_api_register_level;
	new_stonith->cmds->register_level_full = stonith_api_register_level_full;

	new_stonith->cmds->remove_callback = stonith_api_del_callback;
	new_stonith->cmds->register_callback = stonith_api_add_callback;
	new_stonith->cmds->remove_notification = stonith_api_del_notification;
	new_stonith->cmds->register_notification = stonith_api_add_notification;

	new_stonith->cmds->validate = stonith_api_validate;
	/* INDENT-ON */

	return new_stonith;
	}

	stonith_key_value_t *
	stonith_key_value_add(stonith_key_value_t * head, const char key, const char value)
	{
	stonith_key_value_t p, end;

	p = calloc(1, sizeof(stonith_key_value_t));
	if (key) {
	p->key = strdup(key);
	}
	if (value) {
	p->value = strdup(value);
	}

	end = head;
	while (end && end->next) {
	end = end->next;
	}

	if (end) {
	end->next = p;
	} else {
	head = p;
	}

	return head;
	}

	void
	stonith_key_value_freeall(stonith_key_value_t * head, int keys, int values)
	{
	stonith_key_value_t *p;

	while (head) {
	p = head->next;
	if (keys) {
	free(head->key);
	}
	if (values) {
	free(head->value);
	}
	free(head);
	head = p;
	}
	}

	#define api_log_open() openlog("stonith-api", LOG_CONS \| LOG_NDELAY \| LOG_PID, LOG_DAEMON)
	#define api_log(level, fmt, args...) syslog(level, "%s: "fmt, __FUNCTION__, args)

	int
	stonith_api_kick(uint32_t nodeid, const char *uname, int timeout, bool off)
	{
	char *name = NULL;
	const char *action = "reboot";

	int rc = -EPROTO;
	stonith_t *st = NULL;
	enum stonith_call_options opts = st_opt_sync_call \| st_opt_allow_suicide;

	api_log_open();
	st = stonith_api_new();
	if (st) {
	rc = st->cmds->connect(st, "stonith-api", NULL);
	if(rc != pcmk_ok) {
	api_log(LOG_ERR, "Connection failed, could not kick (%s) node %u/%s : %s (%d)", action, nodeid, uname, pcmk_strerror(rc), rc);
	}
	}

	if (uname != NULL) {
	name = strdup(uname);

	} else if (nodeid > 0) {
	opts \|= st_opt_cs_nodeid;
	name = crm_itoa(nodeid);
	}

	if (off) {
	action = "off";
	}

	if (rc == pcmk_ok) {
	rc = st->cmds->fence(st, opts, name, action, timeout, 0);
	if(rc != pcmk_ok) {
	api_log(LOG_ERR, "Could not kick (%s) node %u/%s : %s (%d)", action, nodeid, uname, pcmk_strerror(rc), rc);
	} else {
	api_log(LOG_NOTICE, "Node %u/%s kicked: %s ", nodeid, uname, action);
	}
	}

	if (st) {
	st->cmds->disconnect(st);
	stonith_api_delete(st);
	}

	free(name);
	return rc;
	}

	time_t
	stonith_api_time(uint32_t nodeid, const char *uname, bool in_progress)
	{
	int rc = 0;
	char *name = NULL;

	time_t when = 0;
	stonith_t *st = NULL;
	stonith_history_t history = NULL, hp = NULL;
	enum stonith_call_options opts = st_opt_sync_call;

	st = stonith_api_new();
	if (st) {
	rc = st->cmds->connect(st, "stonith-api", NULL);
	if(rc != pcmk_ok) {
	api_log(LOG_NOTICE, "Connection failed: %s (%d)", pcmk_strerror(rc), rc);
	}
	}

	if (uname != NULL) {
	name = strdup(uname);

	} else if (nodeid > 0) {
	opts \|= st_opt_cs_nodeid;
	name = crm_itoa(nodeid);
	}

	if (st && rc == pcmk_ok) {
	int entries = 0;
	int progress = 0;
	int completed = 0;

	rc = st->cmds->history(st, opts, name, &history, 120);

	for (hp = history; hp; hp = hp->next) {
	entries++;
	if (in_progress) {
	progress++;
	if (hp->state != st_done && hp->state != st_failed) {
	when = time(NULL);
	}

	} else if (hp->state == st_done) {
	completed++;
	if (hp->completed > when) {
	when = hp->completed;
	}
	}
	}

	stonith_history_free(history);

	if(rc == pcmk_ok) {
	api_log(LOG_INFO, "Found %d entries for %u/%s: %d in progress, %d completed", entries, nodeid, uname, progress, completed);
	} else {
	api_log(LOG_ERR, "Could not retrieve fence history for %u/%s: %s (%d)", nodeid, uname, pcmk_strerror(rc), rc);
	}
	}

	if (st) {
	st->cmds->disconnect(st);
	stonith_api_delete(st);
	}

	if(when) {
	api_log(LOG_INFO, "Node %u/%s last kicked at: %ld", nodeid, uname, (long int)when);
	}
	free(name);
	return when;
	}

File Metadata

Mime Type: text/x-diff
Expires: Sat, Jan 25, 11:46 AM (1 d, 19 h)
Storage Engine: blob
Storage Format: Raw Data
Storage Handle: 1322428
Default Alt Text: (72 KB)

No OneTemporaryActions

View Options

File Metadata

Event Timeline

No OneTemporary
Actions