lrm.c
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lrm.c
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	/*
	* Copyright (C) 2004 Andrew Beekhof <andrew@beekhof.net>
	*
	* This program is free software; you can redistribute it and/or
	* modify it under the terms of the GNU 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 software 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
	* General Public License for more details.
	*
	* You should have received a copy of the GNU General Public
	* License along with this library; if not, write to the Free Software
	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	*/

	#include <portability.h>

	#include <sys/param.h>
	#include <crm/crm.h>
	#include <crmd_fsa.h>

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

	#include <unistd.h> /* for access */
	#include <heartbeat.h>
	#include <clplumbing/cl_signal.h>

	#include <errno.h>

	#include <crm/cib.h>
	#include <crm/msg_xml.h>
	#include <crm/common/xml.h>

	#include <crmd.h>
	#include <crmd_messages.h>
	#include <crmd_callbacks.h>
	#include <crmd_lrm.h>

	#include <lrm/raexec.h>

	#include <crm/dmalloc_wrapper.h>

	char make_stop_id(const char rsc, int call_id);
	void ghash_print_pending(gpointer key, gpointer value, gpointer user_data);

	gboolean stop_all_resources(void);
	gboolean resource_stopped(gpointer key, gpointer value, gpointer user_data);

	gboolean build_operation_update(
	crm_data_t rsc_list, lrm_op_t op, const char *src, int lpc);

	gboolean build_active_RAs(crm_data_t *rsc_list);

	void do_update_resource(lrm_op_t *op);

	enum crmd_fsa_input do_lrm_rsc_op(
	lrm_rsc_t rsc, char rid, const char *operation,
	crm_data_t msg, HA_Message request);

	enum crmd_fsa_input do_fake_lrm_op(gpointer data);

	void stop_recurring_action(
	gpointer key, gpointer value, gpointer user_data);

	gboolean remove_recurring_action(
	gpointer key, gpointer value, gpointer user_data);

	lrm_op_t *construct_op(
	crm_data_t rsc_op, const char rsc_id, const char *operation);

	void send_direct_ack(lrm_op_t* op, const char *rsc_id);

	void free_recurring_op(gpointer value);


	GHashTable *monitors = NULL;
	GHashTable *resources = NULL;
	GHashTable *resources_confirmed = NULL;
	GHashTable *shutdown_ops = NULL;

	int num_lrm_register_fails = 0;
	int max_lrm_register_fails = 30;

	enum crmd_rscstate {
	crmd_rscstate_NULL,
	crmd_rscstate_START,
	crmd_rscstate_START_PENDING,
	crmd_rscstate_START_OK,
	crmd_rscstate_START_FAIL,
	crmd_rscstate_STOP,
	crmd_rscstate_STOP_PENDING,
	crmd_rscstate_STOP_OK,
	crmd_rscstate_STOP_FAIL,
	crmd_rscstate_MON,
	crmd_rscstate_MON_PENDING,
	crmd_rscstate_MON_OK,
	crmd_rscstate_MON_FAIL,
	crmd_rscstate_GENERIC_PENDING,
	crmd_rscstate_GENERIC_OK,
	crmd_rscstate_GENERIC_FAIL
	};


	const char *crmd_rscstate2string(enum crmd_rscstate state);

	const char *
	crmd_rscstate2string(enum crmd_rscstate state)
	{
	switch(state) {
	case crmd_rscstate_NULL:
	return NULL;

	case crmd_rscstate_START:
	return CRMD_ACTION_START;

	case crmd_rscstate_START_PENDING:
	return CRMD_ACTION_START_PENDING;

	case crmd_rscstate_START_OK:
	return CRMD_ACTION_STARTED;

	case crmd_rscstate_START_FAIL:
	return CRMD_ACTION_START_FAIL;

	case crmd_rscstate_STOP:
	return CRMD_ACTION_STOP;

	case crmd_rscstate_STOP_PENDING:
	return CRMD_ACTION_STOP_PENDING;

	case crmd_rscstate_STOP_OK:
	return CRMD_ACTION_STOPPED;

	case crmd_rscstate_STOP_FAIL:
	return CRMD_ACTION_STOP_FAIL;

	case crmd_rscstate_MON:
	return CRMD_ACTION_MON;

	case crmd_rscstate_MON_PENDING:
	return CRMD_ACTION_MON_PENDING;

	case crmd_rscstate_MON_OK:
	return CRMD_ACTION_MON_OK;

	case crmd_rscstate_MON_FAIL:
	return CRMD_ACTION_MON_FAIL;

	case crmd_rscstate_GENERIC_PENDING:
	return CRMD_ACTION_GENERIC_PENDING;

	case crmd_rscstate_GENERIC_OK:
	return CRMD_ACTION_GENERIC_OK;

	case crmd_rscstate_GENERIC_FAIL:
	return CRMD_ACTION_GENERIC_FAIL;

	}
	return "<unknown>";
	}

	/* A_LRM_CONNECT */
	enum crmd_fsa_input
	do_lrm_control(long long action,
	enum crmd_fsa_cause cause,
	enum crmd_fsa_state cur_state,
	enum crmd_fsa_input current_input,
	fsa_data_t *msg_data)
	{
	int ret = HA_OK;

	if(action & A_LRM_DISCONNECT) {
	if(fsa_lrm_conn) {
	fsa_lrm_conn->lrm_ops->signoff(fsa_lrm_conn);
	}
	/* TODO: Clean up the hashtable */
	}

	if(action & A_LRM_CONNECT) {

	crm_debug_4("LRM: connect...");
	ret = HA_OK;

	monitors = g_hash_table_new_full(
	g_str_hash, g_str_equal,
	g_hash_destroy_str, free_recurring_op);

	resources = g_hash_table_new_full(
	g_str_hash, g_str_equal,
	g_hash_destroy_str, g_hash_destroy_str);

	resources_confirmed = g_hash_table_new_full(
	g_str_hash, g_str_equal,
	g_hash_destroy_str, g_hash_destroy_str);

	shutdown_ops = g_hash_table_new_full(
	g_str_hash, g_str_equal,
	g_hash_destroy_str, g_hash_destroy_str);

	fsa_lrm_conn = ll_lrm_new(XML_CIB_TAG_LRM);
	if(NULL == fsa_lrm_conn) {
	register_fsa_error(C_FSA_INTERNAL, I_ERROR, NULL);
	ret = HA_FAIL;
	}

	if(ret == HA_OK) {
	crm_debug_4("LRM: sigon...");
	ret = fsa_lrm_conn->lrm_ops->signon(
	fsa_lrm_conn, CRM_SYSTEM_CRMD);
	}

	if(ret != HA_OK) {
	if(++num_lrm_register_fails < max_lrm_register_fails) {
	crm_warn("Failed to sign on to the LRM %d"
	" (%d max) times",
	num_lrm_register_fails,
	max_lrm_register_fails);

	crm_timer_start(wait_timer);
	crmd_fsa_stall(NULL);
	return I_NULL;
	}
	}

	if(ret == HA_OK) {
	crm_debug_4("LRM: set_lrm_callback...");
	ret = fsa_lrm_conn->lrm_ops->set_lrm_callback(
	fsa_lrm_conn, lrm_op_callback);
	if(ret != HA_OK) {
	crm_err("Failed to set LRM callbacks");
	}
	}

	if(ret != HA_OK) {
	crm_err("Failed to sign on to the LRM %d"
	" (max) times", num_lrm_register_fails);
	register_fsa_error(C_FSA_INTERNAL, I_ERROR, NULL);
	return I_NULL;
	}

	/* TODO: create a destroy handler that causes
	* some recovery to happen
	*/
	G_main_add_IPC_Channel(G_PRIORITY_LOW,
	fsa_lrm_conn->lrm_ops->ipcchan(fsa_lrm_conn),
	FALSE,
	lrm_dispatch,
	fsa_lrm_conn,
	default_ipc_connection_destroy);

	set_bit_inplace(fsa_input_register, R_LRM_CONNECTED);

	}

	if(action & ~(A_LRM_CONNECT\|A_LRM_DISCONNECT)) {
	crm_err("Unexpected action %s in %s",
	fsa_action2string(action), __FUNCTION__);
	}


	return I_NULL;
	}

	gboolean
	stop_all_resources(void)
	{
	GListPtr lrm_list = NULL;

	crm_info("Makeing sure all active resources are stopped before exit");

	if(fsa_lrm_conn == NULL) {
	return TRUE;

	} else if(is_set(fsa_input_register, R_SENT_RSC_STOP)) {
	crm_debug("Already sent stop operation");
	return TRUE;
	}

	lrm_list = fsa_lrm_conn->lrm_ops->get_all_rscs(fsa_lrm_conn);
	slist_iter(
	rsc_id, char, lrm_list, lpc,

	gboolean last_op_was_stop = FALSE;
	const char *last_op = g_hash_table_lookup(resources, rsc_id);
	char *stop_id = generate_op_key(rsc_id, CRMD_ACTION_STOP, 0);
	crm_debug("Last op for resource %s: %s", rsc_id, last_op);
	if(safe_str_eq(last_op, stop_id)) {
	last_op_was_stop = TRUE;
	}
	crm_free(stop_id);
	if(last_op_was_stop == FALSE) {
	crm_warn("Resource %s was active at shutdown", rsc_id);
	do_lrm_rsc_op(NULL, rsc_id, CRMD_ACTION_STOP, NULL, NULL);
	}
	);

	set_bit_inplace(fsa_input_register, R_SENT_RSC_STOP);

	if(g_hash_table_size(shutdown_ops) == 0) {
	register_fsa_input(C_FSA_INTERNAL, I_TERMINATE, NULL);

	} else {
	crm_info("Waiting for %d pending stop operations "
	" to complete before exiting",
	g_hash_table_size(shutdown_ops));
	}

	return TRUE;
	}

	gboolean
	build_operation_update(
	crm_data_t xml_rsc, lrm_op_t op, const char *src, int lpc)
	{
	int len = 0;
	char *tmp = NULL;
	char *fail_state = NULL;
	const char *state = NULL;
	crm_data_t *xml_op = NULL;
	char *op_id = NULL;
	const char *caller_version = NULL;


	CRM_DEV_ASSERT(op != NULL);
	if(crm_assert_failed) {
	return FALSE;
	}

	crm_debug("%s: Updating resouce %s after %s %s op",
	src, op->rsc_id, op_status2text(op->op_status), op->op_type);

	if(op->op_status == LRM_OP_CANCELLED) {
	crm_debug("Ignoring cancelled op");
	return TRUE;
	}

	if(safe_str_eq(op->op_type, CRMD_ACTION_NOTIFY)) {
	const char *n_type = g_hash_table_lookup(
	op->params, "notify_type");
	const char *n_task = g_hash_table_lookup(
	op->params, "notify_operation");
	CRM_DEV_ASSERT(n_type != NULL);
	CRM_DEV_ASSERT(n_task != NULL);
	op_id = generate_notify_key(op->rsc_id, n_type, n_task);

	/* these are not yet allowed to fail */
	op->op_status = LRM_OP_DONE;
	op->rc = 0;

	} else {
	op_id = generate_op_key(op->rsc_id, op->op_type, op->interval);
	}

	/* Handle recurring ops - infer last op_status */
	if(op->op_status == LRM_OP_PENDING && op->interval > 0) {
	if(op->rc == 0) {
	crm_debug("Mapping pending operation to DONE");
	op->op_status = LRM_OP_DONE;
	} else {
	crm_debug("Mapping pending operation to ERROR");
	op->op_status = LRM_OP_ERROR;
	}
	}

	xml_op = find_entity(xml_rsc, XML_LRM_TAG_RSC_OP, op_id);
	if(xml_op != NULL) {
	const char *old_status_s = crm_element_value(
	xml_op, XML_LRM_ATTR_OPSTATUS);
	int old_status = crm_atoi(old_status_s, "-2");
	int log_level = LOG_ERR;

	if(old_status_s == NULL) {
	crm_err("No value for "XML_LRM_ATTR_OPSTATUS);

	} else if(old_status == op->op_status) {
	/* safe to mask */
	log_level = LOG_WARNING;

	} else if(old_status == LRM_OP_PENDING){
	/* ??safe to mask?? */
	/* log_level = LOG_WARNING; */
	}
	crm_log_maybe(log_level,
	"Duplicate %s operations in get_cur_state()",
	op_id);
	crm_log_maybe(log_level-2,
	"New entry: %s %s (call=%d, status=%s)",
	op_id, op->user_data, op->call_id,
	op_status2text(op->op_status));
	crm_log_xml(log_level-2, "Existing entry", xml_op);
	crm_free(op_id);
	return FALSE;

	} else {
	xml_op = create_xml_node(xml_rsc, XML_LRM_TAG_RSC_OP);
	}
	crm_xml_add(xml_op, XML_ATTR_ID, op_id);
	crm_free(op_id);

	crm_xml_add(xml_op, XML_LRM_ATTR_TASK, op->op_type);
	crm_xml_add(xml_op, "origin", src);

	if(op->user_data == NULL) {
	op->user_data = generate_transition_key(-1, fsa_our_uname);
	}

	#if CRM_DEPRECATED_SINCE_2_0_3
	caller_version = g_hash_table_lookup(op->params, XML_ATTR_CRM_VERSION);
	if(compare_version("1.0.3", caller_version) > 0) {
	fail_state = generate_transition_magic_v202(op->user_data, op->op_status);
	} else {
	fail_state = generate_transition_magic(op->user_data, op->op_status, op->rc);
	}
	#else
	fail_state = generate_transition_magic(op->user_data, op->op_status, op->rc);
	#endif

	crm_xml_add(xml_op, XML_ATTR_TRANSITION_KEY, op->user_data);
	crm_xml_add(xml_op, XML_ATTR_TRANSITION_MAGIC, fail_state);
	crm_free(fail_state);

	switch(op->op_status) {
	case LRM_OP_PENDING:
	break;
	case LRM_OP_CANCELLED:
	crm_err("What to do here");
	break;
	case LRM_OP_ERROR:
	case LRM_OP_TIMEOUT:
	case LRM_OP_NOTSUPPORTED:
	crm_debug("Resource action %s/%s failed: %d",
	op->rsc_id, op->op_type, op->op_status);
	len = strlen(op->op_type);
	len += strlen("_failed_");
	crm_malloc0(fail_state, sizeof(char)*len);
	if(fail_state != NULL) {
	sprintf(fail_state, "%s_failed", op->op_type);
	}
	crm_xml_add(xml_op, XML_LRM_ATTR_RSCSTATE, fail_state);
	crm_free(fail_state);
	break;
	case LRM_OP_DONE:
	if(safe_str_eq(CRMD_ACTION_START, op->op_type)) {
	state = CRMD_ACTION_STARTED;

	} else if(safe_str_eq(CRMD_ACTION_STOP, op->op_type)) {
	state = CRMD_ACTION_STOPPED;

	} else if(safe_str_eq(CRMD_ACTION_MON, op->op_type)) {
	state = CRMD_ACTION_STARTED;

	} else {
	crm_warn("Using status \"%s\" for op \"%s\""
	"... this is still in the experimental stage.",
	CRMD_ACTION_GENERIC_OK, op->op_type);
	state = CRMD_ACTION_GENERIC_OK;
	}

	crm_xml_add(xml_op, XML_LRM_ATTR_RSCSTATE, state);
	break;
	}

	tmp = crm_itoa(op->call_id);
	crm_xml_add(xml_op, XML_LRM_ATTR_CALLID, tmp);
	crm_free(tmp);

	/* set these on 'xml_rsc' too to make life easy for the TE */
	tmp = crm_itoa(op->rc);
	crm_xml_add(xml_op, XML_LRM_ATTR_RC, tmp);
	crm_free(tmp);

	tmp = crm_itoa(op->op_status);
	crm_xml_add(xml_op, XML_LRM_ATTR_OPSTATUS, tmp);
	crm_free(tmp);

	set_node_tstamp(xml_op);
	#if 1
	if(safe_str_neq(op->op_type, CRMD_ACTION_STOP)) {
	/* this will enable us to later determin that the
	* resource's parameters have changed and we should force
	* a restart
	* however it will come at the cost of a potentially much
	* larger CIB
	*/
	crm_data_t *args_xml = NULL;
	args_xml = create_xml_node(xml_op, XML_TAG_PARAMS);
	g_hash_table_foreach(op->params, hash2field, args_xml);
	}
	#endif

	return TRUE;
	}

	gboolean
	build_active_RAs(crm_data_t *rsc_list)
	{
	GList *op_list = NULL;
	GList *lrm_list = NULL;
	gboolean found_op = FALSE;
	state_flag_t cur_state = 0;

	if(fsa_lrm_conn == NULL) {
	return FALSE;
	}

	lrm_list = fsa_lrm_conn->lrm_ops->get_all_rscs(fsa_lrm_conn);

	slist_iter(
	rid, char, lrm_list, lpc,

	lrm_rsc_t *the_rsc =
	fsa_lrm_conn->lrm_ops->get_rsc(fsa_lrm_conn, rid);

	crm_data_t *xml_rsc = create_xml_node(
	rsc_list, XML_LRM_TAG_RESOURCE);

	int max_call_id = -1;

	crm_debug("Processing lrm_rsc_t entry %s", rid);

	if(the_rsc == NULL) {
	crm_err("NULL resource returned from the LRM");
	continue;
	}

	crm_xml_add(xml_rsc, XML_ATTR_ID, the_rsc->id);
	crm_xml_add(xml_rsc, XML_ATTR_TYPE, the_rsc->type);
	crm_xml_add(xml_rsc, XML_AGENT_ATTR_CLASS, the_rsc->class);
	crm_xml_add(xml_rsc, XML_AGENT_ATTR_PROVIDER,the_rsc->provider);

	op_list = the_rsc->ops->get_cur_state(the_rsc, &cur_state);

	crm_debug_2("\tcurrent state:%s",
	cur_state==LRM_RSC_IDLE?"Idle":"Busy");

	slist_iter(
	op, lrm_op_t, op_list, llpc,

	crm_debug_2("Processing op %s for %s (status=%d, rc=%d)",
	op->op_type, the_rsc->id, op->op_status, op->rc);

	if(max_call_id < op->call_id) {
	build_operation_update(xml_rsc, op, __FUNCTION__, llpc);

	} else if(max_call_id > op->call_id) {
	crm_err("Bad call_id in list=%d. Previous call_id=%d",
	op->call_id, max_call_id);

	} else {
	crm_debug("Skipping duplicate entry for call_id=%d",
	op->call_id);
	}
	max_call_id = op->call_id;
	found_op = TRUE;
	lrm_free_op(op);
	);
	if(found_op == FALSE && g_list_length(op_list) != 0) {
	crm_err("Could not properly determin last op"
	" for %s from %d entries", the_rsc->id,
	g_list_length(op_list));
	}

	g_list_free(op_list);
	lrm_free_rsc(the_rsc);
	);

	g_list_free(lrm_list);

	return TRUE;
	}

	crm_data_t*
	do_lrm_query(gboolean is_replace)
	{
	crm_data_t *xml_result= NULL;
	crm_data_t *xml_state = NULL;
	crm_data_t *xml_data = NULL;
	crm_data_t *rsc_list = NULL;
	const char *exp_state = CRMD_STATE_ACTIVE;

	if(is_set(fsa_input_register, R_SHUTDOWN)) {
	exp_state = CRMD_STATE_INACTIVE;
	}

	xml_state = create_node_state(
	fsa_our_uname, fsa_our_uname,
	ACTIVESTATUS, XML_BOOLEAN_TRUE, ONLINESTATUS,
	CRMD_JOINSTATE_MEMBER, exp_state, __FUNCTION__);

	xml_data = create_xml_node(xml_state, XML_CIB_TAG_LRM);
	rsc_list = create_xml_node(xml_data, XML_LRM_TAG_RESOURCES);

	/* Build a list of active (not always running) resources */
	build_active_RAs(rsc_list);

	if(is_replace) {
	crm_xml_add(xml_state, XML_CIB_ATTR_REPLACE, XML_CIB_TAG_LRM);
	}

	xml_result = create_cib_fragment(xml_state, XML_CIB_TAG_STATUS);

	crm_log_xml_debug_3(xml_state, "Current state of the LRM");

	return xml_result;
	}

	struct recurring_op_s
	{
	char *rsc_id;
	int call_id;
	};


	static void
	cancel_monitor(lrm_rsc_t rsc, const char key)
	{
	struct recurring_op_s *existing_op = NULL;

	if(rsc == NULL) {
	crm_err("No resource to cancel and operation for");
	return;

	} else if(key == NULL) {
	crm_err("No operation to cancel");
	return;
	}

	existing_op = g_hash_table_lookup(monitors, key);
	if(existing_op != NULL) {
	crm_debug("Cancelling previous invocation of %s (%d)",
	key, existing_op->call_id);
	/* cancel it so we can then restart it without conflict */
	if(rsc->ops->cancel_op(rsc, existing_op->call_id) != HA_OK) {
	crm_info("Couldn't cancel %s (%d)",
	key, existing_op->call_id);
	} else {
	g_hash_table_remove(monitors, key);
	}

	} else {
	crm_debug("No previous invocation of %s", key);
	}
	}

	/*
	static gboolean
	is_active(const char *rsc_id)
	{
	char *stop_id = NULL;
	const char *last_op = NULL;
	gboolean is_active = TRUE;

	last_op = g_hash_table_lookup(resources, rsc_id);
	stop_id = generate_op_key(rsc_id, CRMD_ACTION_STOP, 0);

	if(safe_str_eq(last_op, stop_id)) {
	is_active = FALSE;
	}

	crm_free(stop_id);
	return is_active;
	}
	*/

	/* A_LRM_INVOKE */
	enum crmd_fsa_input
	do_lrm_invoke(long long action,
	enum crmd_fsa_cause cause,
	enum crmd_fsa_state cur_state,
	enum crmd_fsa_input current_input,
	fsa_data_t *msg_data)
	{
	const char *crm_op = NULL;
	const char *operation = NULL;
	enum crmd_fsa_input next_input = I_NULL;
	ha_msg_input_t *input = fsa_typed_data(fsa_dt_ha_msg);

	crm_op = cl_get_string(input->msg, F_CRM_TASK);

	if(safe_str_eq(crm_op, CRM_OP_LRM_DELETE)) {
	operation = CRMD_ACTION_DELETE;

	} else if(input->xml != NULL) {
	operation = crm_element_value(input->xml, XML_LRM_ATTR_TASK);
	}

	if(crm_op != NULL && safe_str_eq(crm_op, CRM_OP_LRM_REFRESH)) {
	enum cib_errors rc = cib_ok;
	crm_data_t *fragment = do_lrm_query(TRUE);
	crm_info("Forcing a local LRM refresh");

	rc = fsa_cib_conn->cmds->update(
	fsa_cib_conn, XML_CIB_TAG_STATUS, fragment, NULL,
	cib_quorum_override);

	free_xml(fragment);

	} else if(crm_op != NULL && safe_str_eq(crm_op, CRM_OP_LRM_QUERY)) {
	crm_data_t *data = do_lrm_query(FALSE);
	HA_Message *reply = create_reply(input->msg, data);

	if(relay_message(reply, TRUE) == FALSE) {
	crm_err("Unable to route reply");
	crm_log_message(LOG_ERR, reply);
	crm_msg_del(reply);
	}
	free_xml(data);

	} else if(safe_str_eq(operation, CRM_OP_PROBED)
	\|\| safe_str_eq(crm_op, CRM_OP_REPROBE)) {
	const char *our_uuid = get_uuid(fsa_cluster_conn,fsa_our_uname);
	char *attr_id = crm_concat("lrm-probe", our_uuid, '-');
	char *attr_set = crm_concat("crmd-transient-", our_uuid, '-');
	const char *probed = XML_BOOLEAN_TRUE;
	if(safe_str_eq(crm_op, CRM_OP_REPROBE)) {
	probed = XML_BOOLEAN_FALSE;
	}

	update_attr(fsa_cib_conn, XML_CIB_TAG_STATUS, our_uuid,
	attr_set, attr_id, CRM_OP_PROBED, probed);

	crm_free(attr_id);
	crm_free(attr_set);

	} else if(operation != NULL) {
	char rid[64];
	lrm_rsc_t *rsc = NULL;
	const char *id_from_cib = NULL;
	crm_data_t *xml_rsc = find_xml_node(
	input->xml, XML_CIB_TAG_RESOURCE, TRUE);

	CRM_DEV_ASSERT(xml_rsc != NULL);
	if(crm_assert_failed) {
	crm_log_xml_err(input->xml, "Bad resource");
	return I_NULL;
	}

	id_from_cib = crm_element_value(xml_rsc, XML_ATTR_ID);
	CRM_DEV_ASSERT(id_from_cib != NULL);
	if(crm_assert_failed) {
	crm_err("No value for %s in %s",
	XML_ATTR_ID, crm_element_name(xml_rsc));
	crm_log_xml_err(input->xml, "Bad command");
	return I_NULL;
	}

	/* only the first 16 chars are used by the LRM */
	strncpy(rid, id_from_cib, 64);
	rid[63] = 0;

	rsc = fsa_lrm_conn->lrm_ops->get_rsc(fsa_lrm_conn, rid);

	if(safe_str_eq(operation, CRMD_ACTION_CANCEL)) {
	lrm_op_t* op = construct_op(
	input->xml, id_from_cib, operation);
	const char *op_key = crm_element_value(
	xml_rsc, "operation_key");

	if(op_key == NULL) {
	crm_err("No operation to cancel");
	crm_log_message(LOG_ERR, input->msg);

	} else if(rsc != NULL) {
	cancel_monitor(rsc, op_key);
	}

	op->op_status = LRM_OP_DONE;
	op->rc = EXECRA_OK;
	send_direct_ack(op, rsc->id);
	free_lrm_op(op);

	} else if(safe_str_eq(operation, CRMD_ACTION_DELETE)) {
	int rc = HA_OK;
	lrm_op_t* op = NULL;

	op = construct_op(input->xml, id_from_cib, operation);
	op->op_status = LRM_OP_DONE;
	op->rc = EXECRA_OK;

	if(rsc == NULL) {
	crm_debug("Resource %s was already removed",
	id_from_cib);

	} else {
	crm_info("Removing resource %s from the LRM",
	rsc->id);
	rc = fsa_lrm_conn->lrm_ops->delete_rsc(
	fsa_lrm_conn, rid);
	if(rc != HA_OK) {
	crm_err("Failed to remove resource %s",
	rid);
	op->op_status = LRM_OP_ERROR;
	op->rc = EXECRA_UNKNOWN_ERROR;
	}
	}

	send_direct_ack(op, id_from_cib);
	free_lrm_op(op);

	} else {
	next_input = do_lrm_rsc_op(
	rsc, rid, operation, input->xml, input->msg);
	}
	lrm_free_rsc(rsc);

	} else {
	crm_err("Operation was neither a lrm_query, nor a rsc op. %s",
	crm_str(crm_op));
	register_fsa_error(C_FSA_INTERNAL, I_ERROR, NULL);
	}

	return next_input;
	}

	lrm_op_t *
	construct_op(crm_data_t rsc_op, const char rsc_id, const char *operation)
	{
	lrm_op_t *op = NULL;
	const char *transition = NULL;
	CRM_DEV_ASSERT(rsc_id != NULL);

	crm_malloc0(op, sizeof(lrm_op_t));
	op->op_type = crm_strdup(operation);
	op->op_status = LRM_OP_PENDING;
	op->rc = -1;
	op->rsc_id = crm_strdup(rsc_id);
	op->interval = 0;
	op->timeout = 0;
	op->start_delay = 0;
	op->app_name = crm_strdup(CRM_SYSTEM_CRMD);

	if(rsc_op == NULL) {
	CRM_DEV_ASSERT(safe_str_eq(CRMD_ACTION_STOP, operation));
	op->user_data = NULL;
	op->user_data_len = 0;
	op->params = NULL;

	crm_debug("Constructed %s op for %s", operation, rsc_id);
	return op;
	}

	transition = crm_element_value(rsc_op, XML_ATTR_TRANSITION_KEY);
	CRM_ASSERT(transition != NULL);

	op->user_data = crm_strdup(transition);
	op->user_data_len = 1+strlen(op->user_data);

	op->params = xml2list(rsc_op);
	#if CRM_DEPRECATED_SINCE_2_0_3
	if(g_hash_table_lookup(op->params, XML_ATTR_CRM_VERSION) == NULL) {
	g_hash_table_destroy(op->params);
	op->params = xml2list_202(rsc_op);
	}
	#endif

	if(op->params == NULL) {
	CRM_DEV_ASSERT(safe_str_eq(CRMD_ACTION_STOP, operation));
	}

	op->interval = crm_atoi(g_hash_table_lookup(op->params,"interval"),"0");
	op->timeout = crm_atoi(g_hash_table_lookup(op->params, "timeout"),"0");
	op->start_delay = crm_atoi(g_hash_table_lookup(
	op->params,"start_delay"),"0");

	/* sanity */
	if(op->interval < 0) {
	op->interval = 0;
	g_hash_table_replace(
	op->params, crm_strdup("interval"), crm_strdup("0"));
	}
	if(op->timeout < 0) {
	op->timeout = 0;
	g_hash_table_replace(
	op->params, crm_strdup("timeout"), crm_strdup("0"));
	}
	if(op->start_delay < 0) {
	op->start_delay = 0;
	g_hash_table_replace(
	op->params, crm_strdup("start_delay"), crm_strdup("0"));
	}

	if(safe_str_eq(operation, CRMD_ACTION_START)
	\|\| safe_str_eq(operation, CRMD_ACTION_STOP)) {
	char *interval_s = g_hash_table_lookup(op->params, "interval");
	CRM_DEV_ASSERT(op->interval == 0);
	CRM_DEV_ASSERT(interval_s == NULL);
	}

	crm_debug("Constructed %s op for %s: interval=%d",
	operation, rsc_id, op->interval);

	return op;
	}

	void
	send_direct_ack(lrm_op_t* op, const char *rsc_id)
	{
	HA_Message *reply = NULL;
	crm_data_t update, iter;
	crm_data_t *fragment;

	CRM_DEV_ASSERT(op != NULL);
	if(crm_assert_failed) {
	return;
	}
	if(op->rsc_id == NULL) {
	CRM_DEV_ASSERT(rsc_id != NULL);
	op->rsc_id = crm_strdup(rsc_id);
	}

	crm_info("ACK'ing resource op: %s for %s", op->op_type, op->rsc_id);

	update = create_xml_node(NULL, XML_CIB_TAG_STATE);
	set_uuid(fsa_cluster_conn, update, XML_ATTR_UUID, fsa_our_uname);
	crm_xml_add(update, XML_ATTR_UNAME, fsa_our_uname);

	iter = create_xml_node(update, XML_CIB_TAG_LRM);
	iter = create_xml_node(iter, XML_LRM_TAG_RESOURCES);
	iter = create_xml_node(iter, XML_LRM_TAG_RESOURCE);

	crm_xml_add(iter, XML_ATTR_ID, op->rsc_id);

	build_operation_update(iter, op, __FUNCTION__, 0);
	fragment = create_cib_fragment(update, XML_CIB_TAG_STATUS);

	reply = create_request(CRM_OP_INVOKE_LRM, fragment, NULL,
	CRM_SYSTEM_TENGINE, CRM_SYSTEM_LRMD, NULL);

	crm_log_xml_debug_2(update, "ACK Update");
	crm_log_message_adv(LOG_DEBUG_3, "ACK Reply", reply);

	if(relay_message(reply, TRUE) == FALSE) {
	crm_log_message_adv(LOG_ERR, "Unable to route reply", reply);
	crm_msg_del(reply);
	}
	free_xml(fragment);
	free_xml(update);
	}

	enum crmd_fsa_input
	do_lrm_rsc_op(lrm_rsc_t rsc, char rid, const char *operation,
	crm_data_t msg, HA_Message request)
	{
	int call_id = 0;
	char *op_id = NULL;
	lrm_op_t* op = NULL;

	const char *type = NULL;
	const char *class = NULL;
	const char *provider = NULL;
	const char *transition = NULL;

	GHashTable *params = NULL;
	fsa_data_t *msg_data = NULL;

	CRM_DEV_ASSERT(rid != NULL);

	if(rsc != NULL) {
	class = rsc->class;
	type = rsc->type;

	} else if(msg != NULL) {
	crm_data_t *xml_rsc = find_xml_node(
	msg, XML_CIB_TAG_RESOURCE, TRUE);

	class = crm_element_value(xml_rsc, XML_AGENT_ATTR_CLASS);
	CRM_DEV_ASSERT(class != NULL);
	if(crm_assert_failed) { return I_NULL; }

	type = crm_element_value(xml_rsc, XML_ATTR_TYPE);
	CRM_DEV_ASSERT(type != NULL);
	if(crm_assert_failed) { return I_NULL; }

	provider = crm_element_value(xml_rsc, XML_AGENT_ATTR_PROVIDER);
	}

	if(msg != NULL) {
	transition = crm_element_value(msg, XML_ATTR_TRANSITION_KEY);
	if(transition == NULL) {
	crm_err("Missing transition");
	crm_log_message(LOG_ERR, msg);
	}
	}

	if(rsc == NULL) {
	/* check if its already there */
	rsc = fsa_lrm_conn->lrm_ops->get_rsc(fsa_lrm_conn, rid);
	}

	if(rsc == NULL) {
	/* add it to the list */
	crm_debug("adding rsc %s before operation", rid);
	if(msg != NULL) {
	params = xml2list(msg);
	#if CRM_DEPRECATED_SINCE_2_0_3
	if(g_hash_table_lookup(
	params, XML_ATTR_CRM_VERSION) == NULL) {
	g_hash_table_destroy(params);
	params = xml2list_202(msg);
	}
	#endif

	} else {
	CRM_DEV_ASSERT(safe_str_eq(CRMD_ACTION_STOP, operation));
	}
	fsa_lrm_conn->lrm_ops->add_rsc(
	fsa_lrm_conn, rid, class, type, provider, params);

	rsc = fsa_lrm_conn->lrm_ops->get_rsc(fsa_lrm_conn, rid);
	}

	if(rsc == NULL) {
	crm_err("Could not add resource %s to LRM", rid);
	register_fsa_error(C_FSA_INTERNAL, I_FAIL, NULL);
	return I_NULL;
	}

	/* stop the monitor before stopping the resource */
	if(safe_str_eq(operation, CRMD_ACTION_STOP)) {
	g_hash_table_foreach(monitors, stop_recurring_action, rsc);
	g_hash_table_foreach_remove(
	monitors, remove_recurring_action, rsc);
	}

	/* now do the op */
	crm_info("Performing op %s on %s", operation, rid);
	op = construct_op(msg, rsc->id, operation);

	if((AM_I_DC == FALSE && fsa_state != S_NOT_DC)
	\|\| (AM_I_DC && fsa_state != S_TRANSITION_ENGINE)) {
	if(safe_str_neq(operation, CRMD_ACTION_STOP)) {
	crm_info("Discarding attempt to perform action %s on %s"
	" in state %s", operation, rid,
	fsa_state2string(fsa_state));
	op->rc = 99;
	op->op_status = LRM_OP_ERROR;
	send_direct_ack(op, rsc->id);
	free_lrm_op(op);
	crm_free(op_id);
	return I_NULL;
	}
	}

	op_id = generate_op_key(rsc->id, op->op_type, op->interval);

	if(op->interval > 0) {
	cancel_monitor(rsc, op_id);
	op->target_rc = CHANGED;

	} else {
	op->target_rc = EVERYTIME;
	}

	g_hash_table_replace(resources,crm_strdup(rsc->id), crm_strdup(op_id));

	call_id = rsc->ops->perform_op(rsc, op);

	if(call_id <= 0) {
	crm_err("Operation %s on %s failed: %d",operation,rid,call_id);
	register_fsa_error(C_FSA_INTERNAL, I_FAIL, NULL);

	} else if(op->interval > 0) {
	struct recurring_op_s *op = NULL;
	crm_malloc0(op, sizeof(struct recurring_op_s));
	crm_debug("Adding recurring %s op for %s (%d)",
	op_id, rsc->id, call_id);

	op->call_id = call_id;
	op->rsc_id = crm_strdup(rsc->id);
	g_hash_table_insert(monitors, op_id, op);
	op_id = NULL;

	} else {
	/* record all non-recurring operations so we can wait
	* for them to complete during shutdown
	*/
	char *call_id_s = make_stop_id(rsc->id, call_id);
	g_hash_table_replace(
	shutdown_ops, call_id_s, crm_strdup(rsc->id));
	crm_debug("Recording pending op: %s/%s %s",
	rsc->id, operation, call_id_s);
	}

	crm_free(op_id);
	free_lrm_op(op);
	return I_NULL;
	}

	void
	stop_recurring_action(gpointer key, gpointer value, gpointer user_data)
	{
	lrm_rsc_t *rsc = user_data;
	struct recurring_op_s op = (struct recurring_op_s)value;

	if(safe_str_eq(op->rsc_id, rsc->id)) {
	if(op->call_id > 0) {
	crm_debug("Stopping recurring op %d for %s (%s)",
	op->call_id, rsc->id, (char*)key);
	rsc->ops->cancel_op(rsc, op->call_id);

	} else {
	crm_err("Invalid call_id %d for %s",
	op->call_id, rsc->id);
	/* TODO: we probably need to look up the LRM to find it */
	}
	}
	}

	gboolean
	remove_recurring_action(gpointer key, gpointer value, gpointer user_data)
	{
	lrm_rsc_t *rsc = user_data;
	struct recurring_op_s op = (struct recurring_op_s)value;
	if(safe_str_eq(op->rsc_id, rsc->id)) {
	return TRUE;
	}
	return FALSE;
	}

	void
	free_recurring_op(gpointer value)
	{
	struct recurring_op_s op = (struct recurring_op_s)value;
	crm_free(op->rsc_id);
	crm_free(op);
	}


	void
	free_lrm_op(lrm_op_t *op)
	{
	g_hash_table_destroy(op->params);
	crm_free(op->user_data);
	crm_free(op->output);
	crm_free(op->rsc_id);
	crm_free(op->op_type);
	crm_free(op->app_name);
	crm_free(op);
	}


	static void dup_attr(gpointer key, gpointer value, gpointer user_data)
	{
	g_hash_table_replace(user_data, crm_strdup(key), crm_strdup(value));
	}

	lrm_op_t *
	copy_lrm_op(const lrm_op_t *op)
	{
	lrm_op_t *op_copy = NULL;

	CRM_DEV_ASSERT(op != NULL);
	if(crm_assert_failed) {
	return NULL;
	}
	CRM_ASSERT(op->rsc_id != NULL);

	crm_malloc0(op_copy, sizeof(lrm_op_t));

	op_copy->op_type = crm_strdup(op->op_type);
	/* input fields */
	op_copy->params = g_hash_table_new_full(
	g_str_hash, g_str_equal,
	g_hash_destroy_str, g_hash_destroy_str);

	if(op->params != NULL) {
	g_hash_table_foreach(op->params, dup_attr, op_copy->params);
	}
	op_copy->timeout = op->timeout;
	op_copy->interval = op->interval;
	op_copy->target_rc = op->target_rc;

	/* in the CRM, this is always a string */
	if(op->user_data != NULL) {
	op_copy->user_data = crm_strdup(op->user_data);
	}

	/* output fields */
	op_copy->op_status = op->op_status;
	op_copy->rc = op->rc;
	op_copy->call_id = op->call_id;
	op_copy->output = NULL;
	op_copy->rsc_id = crm_strdup(op->rsc_id);
	if(op->app_name != NULL) {
	op_copy->app_name = crm_strdup(op->app_name);
	}
	if(op->output != NULL) {
	op_copy->output = crm_strdup(op->output);
	}

	return op_copy;
	}


	lrm_rsc_t *
	copy_lrm_rsc(const lrm_rsc_t *rsc)
	{
	lrm_rsc_t *rsc_copy = NULL;

	if(rsc == NULL) {
	return NULL;
	}

	crm_malloc0(rsc_copy, sizeof(lrm_rsc_t));

	rsc_copy->id = crm_strdup(rsc->id);
	rsc_copy->type = crm_strdup(rsc->type);
	rsc_copy->class = NULL;
	rsc_copy->provider = NULL;

	if(rsc->class != NULL) {
	rsc_copy->class = crm_strdup(rsc->class);
	}
	if(rsc->provider != NULL) {
	rsc_copy->provider = crm_strdup(rsc->provider);
	}
	/* GHashTable* params; */
	rsc_copy->params = NULL;
	rsc_copy->ops = NULL;

	return rsc_copy;
	}

	void
	do_update_resource(lrm_op_t* op)
	{
	/*
	<status>
	<nodes_status id=uname>
	<lrm>
	<lrm_resources>
	<lrm_resource id=>
	</...>
	*/
	crm_data_t update, iter;
	crm_data_t *fragment;
	int rc = cib_ok;

	CRM_DEV_ASSERT(op != NULL);
	if(crm_assert_failed) {
	return;
	}

	update = create_xml_node(NULL, XML_CIB_TAG_STATE);
	set_uuid(fsa_cluster_conn, update, XML_ATTR_UUID, fsa_our_uname);
	crm_xml_add(update, XML_ATTR_UNAME, fsa_our_uname);

	iter = create_xml_node(update, XML_CIB_TAG_LRM);
	iter = create_xml_node(iter, XML_LRM_TAG_RESOURCES);
	iter = create_xml_node(iter, XML_LRM_TAG_RESOURCE);

	crm_xml_add(iter, XML_ATTR_ID, op->rsc_id);
	if(op->interval == 0) {
	lrm_rsc_t *rsc = NULL;
	crm_info("Updating %s resource definitions after %s op",
	op->rsc_id, op->op_type);

	rsc = fsa_lrm_conn->lrm_ops->get_rsc(fsa_lrm_conn, op->rsc_id);

	crm_xml_add(iter, XML_ATTR_TYPE, rsc->type);
	crm_xml_add(iter, XML_AGENT_ATTR_CLASS, rsc->class);
	crm_xml_add(iter, XML_AGENT_ATTR_PROVIDER,rsc->provider);

	lrm_free_rsc(rsc);
	}

	build_operation_update(iter, op, __FUNCTION__, 0);
	fragment = create_cib_fragment(update, XML_CIB_TAG_STATUS);

	/* make it an asyncronous call and be done with it
	*
	* Best case:
	* the resource state will be discovered during
	* the next signup or election.
	*
	* Bad case:
	* we are shutting down and there is no DC at the time,
	* but then why were we shutting down then anyway?
	* (probably because of an internal error)
	*
	* Worst case:
	* we get shot for having resources "running" when the really weren't
	*
	* the alternative however means blocking here for too long, which
	* isnt acceptable
	*/
	rc = fsa_cib_conn->cmds->update(
	fsa_cib_conn, XML_CIB_TAG_STATUS, fragment, NULL,
	cib_quorum_override);

	if(rc > 0) {
	/* the return code is a call number, not an error code */
	crm_debug_3("Sent resource state update message: %d", rc);

	} else {
	crm_err("Resource state update failed: %s",
	cib_error2string(rc));
	CRM_DEV_ASSERT(rc == cib_ok);
	}

	free_xml(fragment);
	free_xml(update);
	}

	enum crmd_fsa_input
	do_lrm_event(long long action,
	enum crmd_fsa_cause cause,
	enum crmd_fsa_state cur_state,
	enum crmd_fsa_input cur_input,
	fsa_data_t *msg_data)
	{
	lrm_op_t* op = NULL;
	const char *last_op = NULL;
	const char *probe_s = NULL;
	gboolean is_probe = FALSE;

	if(msg_data->fsa_cause != C_LRM_OP_CALLBACK) {
	register_fsa_error(C_FSA_INTERNAL, I_FAIL, NULL);
	return I_NULL;
	}

	op = fsa_typed_data(fsa_dt_lrm);

	CRM_DEV_ASSERT(op != NULL);
	CRM_DEV_ASSERT(op != NULL && op->rsc_id != NULL);

	if(crm_assert_failed) { return I_NULL; }

	probe_s = g_hash_table_lookup(op->params, XML_ATTR_LRM_PROBE);
	is_probe = crm_is_true(probe_s);

	if(is_probe) {
	int target_rc = EXECRA_OK;
	const char *target_rc_s = NULL;

	target_rc_s = g_hash_table_lookup(
	op->params, XML_ATTR_TE_TARGET_RC);

	CRM_DEV_ASSERT(target_rc_s != NULL);
	if(crm_assert_failed) { return I_NULL; }

	target_rc = atoi(target_rc_s);
	if(target_rc == op->rc) {
	char *op_id = make_stop_id(op->rsc_id, op->call_id);
	crm_info("Confirmed stopped: %s", op->rsc_id);
	send_direct_ack(op, NULL);
	if(g_hash_table_remove(shutdown_ops, op_id)) {
	crm_debug("Op %d (%s %s) confirmed",
	op->call_id, op->op_type, op->rsc_id);
	} else if(op->interval == 0) {
	crm_err("Op %d (%s %s) not matched: %s",
	op->call_id, op->op_type, op->rsc_id, op_id);
	}
	crm_free(op_id);

	return I_NULL;

	} else {
	crm_err("Detected active resource: %s", op->rsc_id);
	}
	}

	switch(op->op_status) {
	case LRM_OP_PENDING:
	/* this really shouldnt happen */
	crm_err("LRM operation (%d) %s_%d on %s %s: %s",
	op->call_id, op->op_type,
	op->interval,
	crm_str(op->rsc_id),
	op_status2text(op->op_status),
	execra_code2string(op->rc));
	break;
	case LRM_OP_ERROR:
	crm_err("LRM operation (%d) %s_%d on %s %s: %s",
	op->call_id, op->op_type,
	op->interval,
	crm_str(op->rsc_id),
	op_status2text(op->op_status),
	execra_code2string(op->rc));
	crm_debug("Result: %s", op->output);
	break;
	case LRM_OP_CANCELLED:
	crm_warn("LRM operation (%d) %s_%d on %s %s",
	op->call_id, op->op_type,
	op->interval,
	crm_str(op->rsc_id),
	op_status2text(op->op_status));
	return I_NULL;
	break;
	case LRM_OP_TIMEOUT:
	last_op = g_hash_table_lookup(
	resources_confirmed, crm_strdup(op->rsc_id));

	if(safe_str_eq(last_op, CRMD_ACTION_STOP)
	&& safe_str_eq(op->op_type, CRMD_ACTION_MON)) {
	crm_err("LRM sent a timed out %s operation"
	" _after_ a confirmed stop",
	op->op_type);
	return I_NULL;
	}

	crm_err("LRM operation (%d) %s_%d on %s %s",
	op->call_id, op->op_type,
	op->interval,
	crm_str(op->rsc_id),
	op_status2text(op->op_status));
	break;
	case LRM_OP_NOTSUPPORTED:
	crm_err("LRM operation (%d) %s_%d on %s %s",
	op->call_id, op->op_type,
	op->interval,
	crm_str(op->rsc_id),
	op_status2text(op->op_status));
	break;
	case LRM_OP_DONE:
	crm_debug("LRM operation (%d) %s_%d on %s %s",
	op->call_id, op->op_type,
	op->interval,
	crm_str(op->rsc_id),
	op_status2text(op->op_status));
	break;
	}
	g_hash_table_replace(resources_confirmed,
	crm_strdup(op->rsc_id), crm_strdup(op->op_type));

	do_update_resource(op);

	if(g_hash_table_size(shutdown_ops) > 0) {
	char *op_id = make_stop_id(op->rsc_id, op->call_id);
	if(g_hash_table_remove(shutdown_ops, op_id)) {
	crm_debug("Op %d (%s %s) confirmed",
	op->call_id, op->op_type, op->rsc_id);

	} else if(op->interval == 0) {
	crm_err("Op %d (%s %s) not matched: %s",
	op->call_id, op->op_type, op->rsc_id, op_id);
	}
	crm_free(op_id);
	}

	if(is_set(fsa_input_register, R_SENT_RSC_STOP)) {
	if(g_hash_table_size(shutdown_ops) == 0) {
	register_fsa_input(C_FSA_INTERNAL, I_TERMINATE, NULL);

	} else {
	crm_debug("Still waiting for %d pending stop operations"
	" to complete before exiting",
	g_hash_table_size(shutdown_ops));
	g_hash_table_foreach(
	shutdown_ops, ghash_print_pending, NULL);
	}
	}

	return I_NULL;
	}

	char *
	make_stop_id(const char *rsc, int call_id)
	{
	char *op_id = NULL;
	crm_malloc0(op_id, strlen(rsc) + 34);
	if(op_id != NULL) {
	snprintf(op_id, strlen(rsc) + 34, "%s:%d", rsc, call_id);
	}
	return op_id;
	}

	void
	ghash_print_pending(gpointer key, gpointer value, gpointer user_data)
	{
	const char *uname = key;
	crm_debug("Pending action: %s", uname);
	}

	gboolean
	resource_stopped(gpointer key, gpointer value, gpointer user_data)
	{
	const char *this_rsc = value;
	const char *target_rsc = user_data;
	if(safe_str_eq(this_rsc, target_rsc)) {
	return TRUE;
	}
	return FALSE;
	}

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