pacemaker.c
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pacemaker.c
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	/*
	* Copyright (C) 2010 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 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	*/

	#include <crm_internal.h>
	#include <pacemaker.h>

	#include <pwd.h>
	#include <sys/stat.h>
	#include <sys/types.h>
	#include <sys/time.h>
	#include <sys/resource.h>

	#include <crm/msg_xml.h>
	#include <crm/common/ipc.h>
	#include <crm/common/mainloop.h>

	gboolean fatal_error = FALSE;
	GMainLoop *mainloop = NULL;
	GHashTable *client_list = NULL;
	GHashTable *peers = NULL;

	char *local_name = NULL;
	uint32_t local_nodeid = 0;
	crm_trigger_t *shutdown_trigger = NULL;
	const char *pid_file = "/var/run/pacemaker.pid";

	/* INDENT-OFF */
	enum crm_proc_flag {
	crm_proc_none = 0x00000001,
	crm_proc_plugin = 0x00000002,
	crm_proc_lrmd = 0x00000010,
	crm_proc_cib = 0x00000100,
	crm_proc_crmd = 0x00000200,
	crm_proc_attrd = 0x00001000,
	crm_proc_stonithd = 0x00002000,
	crm_proc_pe = 0x00010000,
	crm_proc_te = 0x00020000,
	crm_proc_mgmtd = 0x00040000,
	crm_proc_stonith_ng = 0x00100000,
	};
	/* INDENT-ON */

	typedef struct pcmk_child_s {
	int pid;
	long flag;
	int start_seq;
	int respawn_count;
	gboolean respawn;
	const char *name;
	const char *uid;
	const char *command;

	} pcmk_child_t;

	/* Index into the array below */
	#define pcmk_child_crmd 4
	#define pcmk_child_mgmtd 8
	/* INDENT-OFF */
	static pcmk_child_t pcmk_children[] = {
	{ 0, crm_proc_none, 0, 0, FALSE, "none", NULL, NULL },
	{ 0, crm_proc_plugin, 0, 0, FALSE, "ais", NULL, NULL },
	{ 0, crm_proc_lrmd, 3, 0, TRUE, "lrmd", NULL, CRM_DAEMON_DIR"/lrmd" },
	{ 0, crm_proc_cib, 1, 0, TRUE, "cib", CRM_DAEMON_USER, CRM_DAEMON_DIR"/cib" },
	{ 0, crm_proc_crmd, 6, 0, TRUE, "crmd", CRM_DAEMON_USER, CRM_DAEMON_DIR"/crmd" },
	{ 0, crm_proc_attrd, 4, 0, TRUE, "attrd", CRM_DAEMON_USER, CRM_DAEMON_DIR"/attrd" },
	{ 0, crm_proc_stonithd, 0, 0, TRUE, "stonithd", NULL, NULL },
	{ 0, crm_proc_pe, 5, 0, TRUE, "pengine", CRM_DAEMON_USER, CRM_DAEMON_DIR"/pengine" },
	{ 0, crm_proc_mgmtd, 0, 0, TRUE, "mgmtd", NULL, HB_DAEMON_DIR"/mgmtd" },
	{ 0, crm_proc_stonith_ng, 2, 0, TRUE, "stonith-ng", NULL, CRM_DAEMON_DIR"/stonithd" },
	};
	/* INDENT-ON */

	static gboolean start_child(pcmk_child_t * child);

	void
	enable_crmd_as_root(gboolean enable)
	{
	if (enable) {
	pcmk_children[pcmk_child_crmd].uid = NULL;
	} else {
	pcmk_children[pcmk_child_crmd].uid = CRM_DAEMON_USER;
	}
	}

	void
	enable_mgmtd(gboolean enable)
	{
	if (enable) {
	pcmk_children[pcmk_child_mgmtd].start_seq = 7;
	} else {
	pcmk_children[pcmk_child_mgmtd].start_seq = 0;
	}
	}

	static uint32_t
	get_process_list(void)
	{
	int lpc = 0;
	uint32_t procs = crm_proc_plugin;

	for (lpc = 0; lpc < SIZEOF(pcmk_children); lpc++) {
	if (pcmk_children[lpc].pid != 0) {
	procs \|= pcmk_children[lpc].flag;
	}
	}
	return procs;
	}

	static void pcmk_child_exit(GPid pid, gint status, gpointer user_data)
	{
	int exitcode = 0;
	pcmk_child_t *child = user_data;

	if(WIFSIGNALED(status)) {
	int signo = WTERMSIG(status);
	int core = WCOREDUMP(status);
	crm_notice("Child process %s terminated with signal %d (pid=%d, core=%d)",
	child->name, signo, child->pid, core);

	} else if(WIFEXITED(status)) {
	exitcode = WEXITSTATUS(status);
	do_crm_log(exitcode == 0 ? LOG_INFO : LOG_ERR,
	"Child process %s exited (pid=%d, rc=%d)", child->name, child->pid, exitcode);
	}


	child->pid = 0;
	if (exitcode == 100) {
	crm_warn("Pacemaker child process %s no longer wishes to be respawned. "
	"Shutting ourselves down.", child->name);
	child->respawn = FALSE;
	fatal_error = TRUE;
	pcmk_shutdown(15);
	}

	/* Broadcast the fact that one of our processes died ASAP
	*
	* Try to get some logging of the cause out first though
	* because we're probably about to get fenced
	*
	* Potentially do this only if respawn_count > N
	* to allow for local recovery
	*/
	update_node_processes(local_nodeid, NULL, get_process_list());

	child->respawn_count += 1;
	if (child->respawn_count > MAX_RESPAWN) {
	crm_err("Child respawn count exceeded by %s", child->name);
	child->respawn = FALSE;
	}

	if (shutdown_trigger) {
	mainloop_set_trigger(shutdown_trigger);
	update_node_processes(local_nodeid, NULL, get_process_list());

	} else if (child->respawn) {
	crm_notice("Respawning failed child process: %s", child->name);
	start_child(child);
	}
	}

	static gboolean
	stop_child(pcmk_child_t * child, int signal)
	{
	if (signal == 0) {
	signal = SIGTERM;
	}

	if (child->command == NULL) {
	crm_debug("Nothing to do for child \"%s\"", child->name);
	return TRUE;
	}

	if (child->pid <= 0) {
	crm_trace("Client %s not running", child->name);
	return TRUE;
	}

	errno = 0;
	if (kill(child->pid, signal) == 0) {
	crm_notice("Stopping %s: Sent -%d to process %d", child->name, signal, child->pid);

	} else {
	crm_perror(LOG_ERR, "Stopping %s: Could not send -%d to process %d failed",
	child->name, signal, child->pid);
	}

	return TRUE;
	}

	static char *opts_default[] = { NULL, NULL };
	static char *opts_vgrind[] = { NULL, NULL, NULL, NULL, NULL };

	static gboolean
	start_child(pcmk_child_t * child)
	{
	int lpc = 0;
	uid_t uid = 0;
	struct rlimit oflimits;
	gboolean use_valgrind = FALSE;
	gboolean use_callgrind = FALSE;
	const char *devnull = "/dev/null";
	const char *env_valgrind = getenv("PCMK_valgrind_enabled");
	const char *env_callgrind = getenv("PCMK_callgrind_enabled");

	if (child->command == NULL) {
	crm_info("Nothing to do for child \"%s\"", child->name);
	return TRUE;
	}

	if (env_callgrind != NULL && crm_is_true(env_callgrind)) {
	use_callgrind = TRUE;
	use_valgrind = TRUE;

	} else if (env_callgrind != NULL && strstr(env_callgrind, child->name)) {
	use_callgrind = TRUE;
	use_valgrind = TRUE;

	} else if (env_valgrind != NULL && crm_is_true(env_valgrind)) {
	use_valgrind = TRUE;

	} else if (env_valgrind != NULL && strstr(env_valgrind, child->name)) {
	use_valgrind = TRUE;
	}

	if (use_valgrind && strlen(VALGRIND_BIN) == 0) {
	crm_warn("Cannot enable valgrind for %s:"
	" The location of the valgrind binary is unknown", child->name);
	use_valgrind = FALSE;
	}

	child->pid = fork();
	CRM_ASSERT(child->pid != -1);

	if (child->pid > 0) {
	/* parent */
	g_child_watch_add(child->pid, pcmk_child_exit, child);

	crm_info("Forked child %d for process %s%s", child->pid, child->name,
	use_valgrind ? " (valgrind enabled: " VALGRIND_BIN ")" : "");
	update_node_processes(local_nodeid, NULL, get_process_list());
	return TRUE;

	} else {
	/* Start a new session */
	(void)setsid();

	/* Setup the two alternate arg arrarys */
	opts_vgrind[0] = strdup(VALGRIND_BIN);
	if (use_callgrind) {
	opts_vgrind[1] = strdup("--tool=callgrind");
	opts_vgrind[2] = strdup("--callgrind-out-file=" CRM_STATE_DIR "/callgrind.out.%p");
	opts_vgrind[3] = strdup(child->command);
	opts_vgrind[4] = NULL;
	} else {
	opts_vgrind[1] = strdup(child->command);
	opts_vgrind[2] = NULL;
	opts_vgrind[3] = NULL;
	opts_vgrind[4] = NULL;
	}
	opts_default[0] = strdup(child->command);;

	#if 0
	/* Dont set the group for now - it prevents connection to the cluster */
	if (gid && setgid(gid) < 0) {
	crm_perror("Could not set group to %d", gid);
	}
	#endif

	if (child->uid) {
	if (crm_user_lookup(child->uid, &uid, NULL) < 0) {
	crm_err("Invalid uid (%s) specified for %s", child->uid, child->name);
	return TRUE;
	}
	}

	if (uid && setuid(uid) < 0) {
	crm_perror(LOG_ERR, "Could not set user to %d (%s)", uid, child->uid);
	}

	/* Close all open file descriptors */
	getrlimit(RLIMIT_NOFILE, &oflimits);
	for (lpc = 0; lpc < oflimits.rlim_cur; lpc++) {
	close(lpc);
	}

	(void)open(devnull, O_RDONLY); /* Stdin: fd 0 */
	(void)open(devnull, O_WRONLY); /* Stdout: fd 1 */
	(void)open(devnull, O_WRONLY); /* Stderr: fd 2 */

	if (use_valgrind) {
	(void)execvp(VALGRIND_BIN, opts_vgrind);
	} else {
	(void)execvp(child->command, opts_default);
	}
	crm_perror(LOG_ERR, "FATAL: Cannot exec %s", child->command);
	exit(100);
	}
	return TRUE; /* never reached */
	}

	static gboolean
	escalate_shutdown(gpointer data)
	{

	pcmk_child_t *child = data;

	if (child->pid) {
	/* Use SIGSEGV instead of SIGKILL to create a core so we can see what it was up to */
	crm_err("Child %s not terminating in a timely manner, forcing", child->name);
	stop_child(child, SIGSEGV);
	}
	return FALSE;
	}

	static gboolean
	pcmk_shutdown_worker(gpointer user_data)
	{
	static int phase = 0;
	static time_t next_log = 0;
	static int max = SIZEOF(pcmk_children);

	int lpc = 0;

	if (phase == 0) {
	crm_notice("Shuting down Pacemaker");
	phase = max;
	}

	for (; phase > 0; phase--) {
	/* dont stop anything with start_seq < 1 */

	for (lpc = max - 1; lpc >= 0; lpc--) {
	pcmk_child_t *child = &(pcmk_children[lpc]);

	if (phase != child->start_seq) {
	continue;
	}

	if (child->pid) {
	time_t now = time(NULL);

	if (child->respawn) {
	next_log = now + 30;
	child->respawn = FALSE;
	stop_child(child, SIGTERM);
	if (phase < pcmk_children[pcmk_child_crmd].start_seq) {
	g_timeout_add(180000 /* 3m */ , escalate_shutdown, child);
	}

	} else if (now >= next_log) {
	next_log = now + 30;
	crm_notice("Still waiting for %s (pid=%d, seq=%d) to terminate...",
	child->name, child->pid, child->start_seq);
	}
	return TRUE;
	}

	/* cleanup */
	crm_debug("%s confirmed stopped", child->name);
	child->pid = 0;
	}
	}

	/* send_cluster_id(); */
	crm_notice("Shutdown complete");
	g_main_loop_quit(mainloop);

	if(fatal_error) {
	crm_notice("Attempting to inhibit respawning after fatal error");
	exit(100);
	}

	return TRUE;
	}

	void
	pcmk_shutdown(int nsig)
	{
	if (shutdown_trigger == NULL) {
	shutdown_trigger = mainloop_add_trigger(G_PRIORITY_HIGH, pcmk_shutdown_worker, NULL);
	}
	mainloop_set_trigger(shutdown_trigger);
	}

	static void
	build_path(const char *path_c, mode_t mode)
	{
	int offset = 1, len = 0;
	char *path = strdup(path_c);

	CRM_CHECK(path != NULL, return);
	for (len = strlen(path); offset < len; offset++) {
	if (path[offset] == '/') {
	path[offset] = 0;
	if (mkdir(path, mode) < 0 && errno != EEXIST) {
	crm_perror(LOG_ERR, "Could not create directory '%s'", path);
	break;
	}
	path[offset] = '/';
	}
	}
	if (mkdir(path, mode) < 0 && errno != EEXIST) {
	crm_perror(LOG_ERR, "Could not create directory '%s'", path);
	}
	free(path);
	}

	static int32_t
	pcmk_ipc_accept(qb_ipcs_connection_t *c, uid_t uid, gid_t gid)
	{
	crm_trace("Connecting %p for uid=%d gid=%d", c, uid, gid);
	return 0;
	}

	static void
	pcmk_ipc_created(qb_ipcs_connection_t *c)
	{
	g_hash_table_insert(client_list, c, c);
	crm_debug("Channel %p connected: %d children", c, g_hash_table_size(client_list));
	/* update_process_clients(); */
	}

	/* Exit code means? */
	static int32_t
	pcmk_ipc_dispatch(qb_ipcs_connection_t c, void data, size_t size)
	{
	uint32_t id = 0;
	uint32_t flags = 0;
	const char *task = NULL;
	xmlNode *msg = crm_ipcs_recv(c, data, size, &id, &flags);

	crm_trace("Message from %p", c);
	if(flags & crm_ipc_client_response) {
	crm_ipcs_send_ack(c, id, "ack", __FUNCTION__, __LINE__);
	}

	if (msg == NULL) {
	return 0;
	}

	task = crm_element_value(msg, F_CRM_TASK);
	if(crm_str_eq(task, CRM_OP_QUIT, TRUE)) {
	/* Time to quit */
	crm_notice("Shutting down in responce to ticket %s (%s)",
	crm_element_value(msg, XML_ATTR_REFERENCE),
	crm_element_value(msg, F_CRM_ORIGIN));
	pcmk_shutdown(15);

	} else {
	/* Just send to everyone */
	update_process_clients();
	}

	free_xml(msg);
	return 0;
	}

	/* Error code means? */
	static int32_t
	pcmk_ipc_closed(qb_ipcs_connection_t *c)
	{
	crm_trace("%p closed", c);
	return 0;
	}

	static void
	pcmk_ipc_destroy(qb_ipcs_connection_t *c)
	{
	crm_trace("%p destroy", c);
	g_hash_table_remove(client_list, c);
	}

	struct qb_ipcs_service_handlers ipc_callbacks =
	{
	.connection_accept = pcmk_ipc_accept,
	.connection_created = pcmk_ipc_created,
	.msg_process = pcmk_ipc_dispatch,
	.connection_closed = pcmk_ipc_closed,
	.connection_destroyed = pcmk_ipc_destroy
	};


	static gboolean
	ghash_send_proc_details(gpointer key, gpointer value, gpointer data)
	{
	if (crm_ipcs_send(key, 0, data, TRUE) <= 0) {
	/* remove it */
	return TRUE;
	}
	return FALSE;
	}

	static void
	peer_loop_fn(gpointer key, gpointer value, gpointer user_data)
	{
	pcmk_peer_t *node = value;
	xmlNode *update = user_data;

	xmlNode *xml = create_xml_node(update, "node");

	crm_xml_add_int(xml, "id", node->id);
	crm_xml_add(xml, "uname", node->uname);
	crm_xml_add_int(xml, "processes", node->processes);
	}

	void
	update_process_clients(void)
	{
	xmlNode *update = create_xml_node(NULL, "nodes");

	crm_trace("Sending process list to %d children", g_hash_table_size(client_list));

	g_hash_table_foreach(peers, peer_loop_fn, update);
	g_hash_table_foreach_remove(client_list, ghash_send_proc_details, update);

	free_xml(update);
	}

	void
	update_process_peers(void)
	{
	char buffer[1024];
	struct iovec iov;
	int rc = 0;

	memset(buffer, 0, SIZEOF(buffer));

	if (local_name) {
	rc = snprintf(buffer, SIZEOF(buffer) - 1, "<node uname=\"%s\" proclist=\"%u\"/>",
	local_name, get_process_list());
	} else {
	rc = snprintf(buffer, SIZEOF(buffer) - 1, "<node proclist=\"%u\"/>", get_process_list());
	}

	iov.iov_base = buffer;
	iov.iov_len = rc + 1;

	crm_trace("Sending %s", buffer);
	send_cpg_message(&iov);
	}

	gboolean
	update_node_processes(uint32_t id, const char *uname, uint32_t procs)
	{
	gboolean changed = FALSE;
	pcmk_peer_t *node = g_hash_table_lookup(peers, GUINT_TO_POINTER(id));

	if (node == NULL) {
	changed = TRUE;

	node = calloc(1, sizeof(pcmk_peer_t));
	node->id = id;

	g_hash_table_insert(peers, GUINT_TO_POINTER(id), node);
	node = g_hash_table_lookup(peers, GUINT_TO_POINTER(id));
	CRM_ASSERT(node != NULL);
	}

	if (uname != NULL) {
	if (node->uname == NULL \|\| safe_str_eq(node->uname, uname) == FALSE) {
	crm_notice("%p Node %u now known as %s%s%s", node, id, uname,
	node->uname?node->uname:", was: ", node->uname?node->uname:"");
	free(node->uname);
	node->uname = strdup(uname);
	changed = TRUE;
	}

	} else {
	crm_trace("Empty uname for node %u", id);
	}

	if (procs != 0) {
	if(procs != node->processes) {
	crm_debug("Node %s now has process list: %.32x (was %.32x)",
	node->uname, procs, node->processes);
	node->processes = procs;
	changed = TRUE;

	} else {
	crm_trace("Node %s still has process list: %.32x", node->uname, procs);
	}
	}

	if (changed && id == local_nodeid) {
	update_process_clients();
	update_process_peers();
	}
	return changed;
	}

	/* INDENT-OFF */
	static struct crm_option long_options[] = {
	/* Top-level Options */
	{"help", 0, 0, '?', "\tThis text"},
	{"version", 0, 0, '$', "\tVersion information" },
	{"verbose", 0, 0, 'V', "\tIncrease debug output"},
	{"shutdown", 0, 0, 'S', "\tInstruct Pacemaker to shutdown on this machine"},
	{"features", 0, 0, 'F', "\tDisplay the full version and list of features Pacemaker was built with"},

	{"-spacer-", 1, 0, '-', "\nAdditional Options:"},
	{"foreground", 0, 0, 'f', "\tRun in the foreground instead of as a daemon"},
	{"pid-file", 1, 0, 'p', "\t(Advanced) Daemon pid file location"},

	{NULL, 0, 0, 0}
	};
	/* INDENT-ON */

	int
	main(int argc, char **argv)
	{
	int rc;
	int flag;
	int argerr = 0;

	int option_index = 0;
	gboolean shutdown = FALSE;

	int start_seq = 1, lpc = 0;
	static int max = SIZEOF(pcmk_children);

	uid_t pcmk_uid = 0;
	gid_t pcmk_gid = 0;
	struct rlimit cores;
	crm_ipc_t *old_instance = NULL;
	qb_ipcs_service_t *ipcs = NULL;

	/* INDENT-OFF */
	/* =::=::= Default Environment =::=::= */
	setenv("HA_mcp", "true", 1);
	setenv("HA_COMPRESSION", "bz2", 1);
	setenv("HA_debug", "0", 1);
	setenv("HA_logfacility", "daemon", 1);
	setenv("HA_LOGFACILITY", "daemon", 1);
	setenv("HA_use_logd", "off", 1);
	/* INDENT-ON */

	crm_log_init(NULL, LOG_INFO, TRUE, FALSE, argc, argv, FALSE);
	crm_set_options(NULL, "mode [options]", long_options, "Start/Stop Pacemaker\n");

	while (1) {
	flag = crm_get_option(argc, argv, &option_index);
	if (flag == -1)
	break;

	switch (flag) {
	case 'V':
	crm_bump_log_level(argc, argv);
	break;
	case 'f':
	/* Legacy */
	break;
	case 'p':
	pid_file = optarg;
	break;
	case '$':
	case '?':
	crm_help(flag, EX_OK);
	break;
	case 'S':
	shutdown = TRUE;
	break;
	case 'F':
	printf("Pacemaker %s (Build: %s)\n Supporting: %s\n", VERSION, BUILD_VERSION,
	CRM_FEATURES);
	exit(0);
	default:
	printf("Argument code 0%o (%c) is not (?yet?) supported\n", flag, flag);
	++argerr;
	break;
	}
	}

	if (optind < argc) {
	printf("non-option ARGV-elements: ");
	while (optind < argc)
	printf("%s ", argv[optind++]);
	printf("\n");
	}
	if (argerr) {
	crm_help('?', EX_USAGE);
	}

	crm_debug("Checking for old instances of %s", CRM_SYSTEM_MCP);
	old_instance = crm_ipc_new(CRM_SYSTEM_MCP, 0);
	crm_ipc_connect(old_instance);

	if(shutdown) {
	crm_debug("Terminating previous instance");
	while (crm_ipc_connected(old_instance)) {
	xmlNode *cmd = create_request(CRM_OP_QUIT, NULL, NULL, CRM_SYSTEM_MCP, CRM_SYSTEM_MCP, NULL);

	crm_debug(".");
	crm_ipc_send(old_instance, cmd, 0, 0, NULL);
	free_xml(cmd);

	sleep(2);
	}
	crm_ipc_close(old_instance);
	crm_ipc_destroy(old_instance);
	exit(0);

	} else if(crm_ipc_connected(old_instance)) {
	crm_ipc_close(old_instance);
	crm_ipc_destroy(old_instance);
	crm_err("Pacemaker is already active, aborting startup");
	exit(100);
	}

	crm_ipc_close(old_instance);
	crm_ipc_destroy(old_instance);

	if (read_config() == FALSE) {
	crm_notice("Could not obtain corosync config data, exiting");
	return 1;
	}

	crm_notice("Starting Pacemaker %s (Build: %s): %s",
	VERSION, BUILD_VERSION, CRM_FEATURES);
	mainloop = g_main_new(FALSE);

	rc = getrlimit(RLIMIT_CORE, &cores);
	if (rc < 0) {
	crm_perror(LOG_ERR, "Cannot determine current maximum core size.");
	} else {
	if (cores.rlim_max == 0 && geteuid() == 0) {
	cores.rlim_max = RLIM_INFINITY;
	} else {
	crm_info("Maximum core file size is: %lu", (unsigned long)cores.rlim_max);
	}
	cores.rlim_cur = cores.rlim_max;

	rc = setrlimit(RLIMIT_CORE, &cores);
	if (rc < 0) {
	crm_perror(LOG_ERR,
	"Core file generation will remain disabled."
	" Core files are an important diagnositic tool,"
	" please consider enabling them by default.");
	}
	#if 0
	/* system() is not thread-safe, can't call from here
	* Actually, its a pretty hacky way to try and achieve this anyway
	*/
	if (system("echo 1 > /proc/sys/kernel/core_uses_pid") != 0) {
	crm_perror(LOG_ERR, "Could not enable /proc/sys/kernel/core_uses_pid");
	}
	#endif
	}

	if (crm_user_lookup(CRM_DAEMON_USER, &pcmk_uid, &pcmk_gid) < 0) {
	crm_err("Cluster user %s does not exist, aborting Pacemaker startup", CRM_DAEMON_USER);
	return TRUE;
	}

	mkdir(CRM_STATE_DIR, 0750);
	rc = chown(CRM_STATE_DIR, pcmk_uid, pcmk_gid);
	if(rc < 0) {
	crm_warn("Cannot change the ownership of %s to user %s and gid %d",
	CRM_STATE_DIR, CRM_DAEMON_USER, pcmk_gid);
	}

	/* Used by stonithd */
	build_path(HA_STATE_DIR "/heartbeat", 0755);

	/* Used by RAs - Leave owned by root */
	build_path(CRM_RSCTMP_DIR, 0755);

	/* Used to store core files in */
	build_path(CRM_CORE_DIR, 0755);

	/* Per-user core directories */
	if (mkdir(CRM_CORE_DIR"/root", 0700) < 0 && errno != EEXIST) {
	crm_perror(LOG_INFO, "Could not create %s", CRM_CORE_DIR"/root");
	}

	if (mkdir(CRM_CORE_DIR"/"CRM_DAEMON_USER, 0700) < 0 && errno != EEXIST) {
	crm_perror(LOG_INFO, "Could not create %s", CRM_CORE_DIR"/"CRM_DAEMON_USER);
	} else {
	if(chown(CRM_CORE_DIR"/"CRM_DAEMON_USER, pcmk_uid, pcmk_gid) < 0) {
	crm_perror(LOG_ERR, "Could not change the ownership of %s to %s", CRM_CORE_DIR"/"CRM_DAEMON_USER, CRM_DAEMON_USER);
	}
	}

	client_list = g_hash_table_new(g_direct_hash, g_direct_equal);
	peers = g_hash_table_new(g_direct_hash, g_direct_equal);

	ipcs = mainloop_add_ipc_server(CRM_SYSTEM_MCP, QB_IPC_NATIVE, &ipc_callbacks);
	if (ipcs == NULL) {
	crm_err("Couldn't start IPC server");
	return 1;
	}

	if (cluster_connect_cfg(&local_nodeid) == FALSE) {
	crm_err("Couldn't connect to Corosync's CFG service");
	return 1;
	}

	if (cluster_connect_cpg() == FALSE) {
	crm_err("Couldn't connect to Corosync's CPG service");
	return 1;
	}

	local_name = get_local_node_name();
	update_node_processes(local_nodeid, local_name, get_process_list());

	mainloop_add_signal(SIGTERM, pcmk_shutdown);
	mainloop_add_signal(SIGINT, pcmk_shutdown);

	for (start_seq = 1; start_seq < max; start_seq++) {
	/* dont start anything with start_seq < 1 */
	for (lpc = 0; lpc < max; lpc++) {
	if (start_seq == pcmk_children[lpc].start_seq) {
	start_child(&(pcmk_children[lpc]));
	}
	}
	}

	crm_info("Starting mainloop");

	g_main_run(mainloop);

	if(ipcs) {
	crm_trace("Closing IPC server");
	mainloop_del_ipc_server(ipcs);
	ipcs = NULL;
	}

	g_main_destroy(mainloop);

	cluster_disconnect_cpg();
	cluster_disconnect_cfg();

	crm_info("Exiting %s", crm_system_name);

	return 0;
	}

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