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	diff --git a/src/sbd-cluster.c b/src/sbd-cluster.c
	index b6c5512..31fd5da 100644
	--- a/src/sbd-cluster.c
	+++ b/src/sbd-cluster.c
	@@ -1,770 +1,801 @@
	/*
	* Copyright (C) 2013 Lars Marowsky-Bree <lmb@suse.com>
	*
	* Based on crm_mon.c, which was:
	* 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 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 program; if not, write to the Free Software Foundation, Inc.,
	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	*/

	#include <errno.h>
	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>
	#include <dirent.h>
	#include <sys/stat.h>
	#include <sys/types.h>

	#include <config.h>
	#include <crm_config.h>

	#include <crm/cluster.h>
	#include <crm/common/mainloop.h>

	#if CHECK_TWO_NODE \|\| CHECK_QDEVICE_SYNC_TIMEOUT
	#include <glib-unix.h>
	+// available since glib 2.58
	+#ifndef G_SOURCE_FUNC
	+#define G_SOURCE_FUNC(f) ((GSourceFunc) (void (*)(void)) (f))
	+#endif
	+// available since glib 2.32
	+#ifndef G_SOURCE_REMOVE
	+#define G_SOURCE_REMOVE FALSE
	+#endif
	+// available since glib 2.32
	+#ifndef G_SOURCE_CONTINUE
	+#define G_SOURCE_CONTINUE TRUE
	+#endif
	#endif

	#include "sbd.h"

	//undef SUPPORT_PLUGIN
	//define SUPPORT_PLUGIN 1

	/* binary for pacemaker-remote has changed with pacemaker 2 */
	#ifdef CRM_SCORE_INFINITY
	#define PACEMAKER_REMOTE_BINARY "pacemaker-remoted"
	#else
	#define PACEMAKER_REMOTE_BINARY "pacemaker_remoted"
	#endif

	static bool remote_node = false;
	static pid_t remoted_pid = 0;
	static int reconnect_msec = 1000;
	static GMainLoop *mainloop = NULL;
	static guint notify_timer = 0;
	static crm_cluster_t cluster;
	+static void clean_up(int rc);
	static gboolean sbd_remote_check(gpointer user_data);
	static long unsigned int find_pacemaker_remote(void);
	static void sbd_membership_destroy(gpointer user_data);


	#if SUPPORT_PLUGIN
	static void
	sbd_plugin_membership_dispatch(cpg_handle_t handle,
	const struct cpg_name *groupName,
	uint32_t nodeid, uint32_t pid, void *msg, size_t msg_len)
	{
	if(msg_len > 0) {
	set_servant_health(pcmk_health_online, LOG_INFO,
	"Connected to %s", name_for_cluster_type(get_cluster_type()));
	} else {
	set_servant_health(pcmk_health_unclean, LOG_WARNING,
	"Broken %s message", name_for_cluster_type(get_cluster_type()));
	}
	notify_parent();
	return;
	}
	#endif

	#if SUPPORT_COROSYNC

	#if CHECK_VOTEQUORUM_HANDLE
	#include <corosync/votequorum.h>

	static votequorum_handle_t votequorum_handle = 0;
	#endif

	#if CHECK_TWO_NODE
	static bool two_node = false;
	#endif
	static bool ever_seen_both = false;
	static int cpg_membership_entries = -1;

	#if CHECK_QDEVICE_SYNC_TIMEOUT
	#include <corosync/votequorum.h>
	static bool using_qdevice = false;
	static uint32_t qdevice_sync_timeout = /* in seconds */
	VOTEQUORUM_QDEVICE_DEFAULT_SYNC_TIMEOUT / 1000;
	#endif

	#if CHECK_TWO_NODE \|\| CHECK_QDEVICE_SYNC_TIMEOUT
	#include <corosync/cmap.h>

	static cmap_handle_t cmap_handle = 0;
	static cmap_track_handle_t track_handle = 0;
	static GSource *cmap_source = NULL;
	#endif

	void
	sbd_cpg_membership_health_update()
	{
	if(cpg_membership_entries > 0) {
	#if CHECK_TWO_NODE
	bool quorum_is_suspect_two_node =
	(two_node && ever_seen_both && cpg_membership_entries == 1);
	#endif
	#if CHECK_QDEVICE_SYNC_TIMEOUT
	bool quorum_is_suspect_qdevice_timing =
	using_qdevice && (qdevice_sync_timeout > timeout_watchdog);
	#endif

	do {
	#if CHECK_TWO_NODE
	if (quorum_is_suspect_two_node) {
	/* Alternative would be asking votequorum for number of votes.
	* Using pacemaker's cpg as source for number of active nodes
	* avoids binding to an additional library, is definitely
	* less code to write and we wouldn't have to combine data
	* from 3 sources (cmap, cpg & votequorum) in a potentially
	* racy environment.
	*/
	set_servant_health(pcmk_health_noquorum, LOG_WARNING,
	"Connected to %s but requires both nodes present",
	name_for_cluster_type(get_cluster_type())
	);
	break;
	}
	#endif
	#if CHECK_QDEVICE_SYNC_TIMEOUT
	if (quorum_is_suspect_qdevice_timing) {
	/* We can't really trust quorum info as qdevice-sync_timeout
	* makes reaction of quorum too sluggish for our
	* watchdog-timeout.
	*/
	set_servant_health(pcmk_health_noquorum, LOG_WARNING,
	"Connected to %s but quorum using qdevice is distrusted "
	"for SBD as qdevice-sync_timeout (%ds) > watchdog-timeout "
	"(%lus).",
	name_for_cluster_type(get_cluster_type()),
	qdevice_sync_timeout, timeout_watchdog
	);
	break;
	}
	#endif
	set_servant_health(pcmk_health_online, LOG_INFO,
	"Connected to %s (%u members)%s",
	name_for_cluster_type(get_cluster_type()),
	cpg_membership_entries,
	#if CHECK_QDEVICE_SYNC_TIMEOUT
	using_qdevice?" using qdevice for quorum":""
	#else
	""
	#endif
	);
	} while (false);

	if (cpg_membership_entries > 1) {
	ever_seen_both = true;
	}
	} else {
	set_servant_health(pcmk_health_unclean, LOG_WARNING,
	"Empty %s membership", name_for_cluster_type(get_cluster_type()));
	}
	}

	void
	sbd_cpg_membership_dispatch(cpg_handle_t handle,
	const struct cpg_name *groupName,
	const struct cpg_address *member_list, size_t member_list_entries,
	const struct cpg_address *left_list, size_t left_list_entries,
	const struct cpg_address *joined_list, size_t joined_list_entries)
	{
	cpg_membership_entries = member_list_entries;
	sbd_cpg_membership_health_update();
	notify_parent();
	}

	#if CHECK_TWO_NODE \|\| CHECK_QDEVICE_SYNC_TIMEOUT
	static void sbd_cmap_notify_fn(
	cmap_handle_t cmap_handle,
	cmap_track_handle_t cmap_track_handle,
	int32_t event,
	const char *key_name,
	struct cmap_notify_value new_val,
	struct cmap_notify_value old_val,
	void *user_data)
	{
	switch (event) {
	case CMAP_TRACK_ADD:
	case CMAP_TRACK_MODIFY:
	switch (new_val.type) {
	case CMAP_VALUETYPE_UINT8:
	#if CHECK_TWO_NODE
	if (!strcmp(key_name, "quorum.two_node")) {
	two_node = ((uint8_t ) new_val.data);
	} else {
	return;
	}
	break;
	#else
	return;
	#endif
	case CMAP_VALUETYPE_STRING:
	#if CHECK_QDEVICE_SYNC_TIMEOUT
	if (!strcmp(key_name, "quorum.device.model")) {
	using_qdevice =
	((new_val.data) && strlen((char *) new_val.data));
	} else {
	return;
	}
	break;
	#else
	return;
	#endif
	case CMAP_VALUETYPE_UINT32:
	#if CHECK_QDEVICE_SYNC_TIMEOUT
	if (!strcmp(key_name, "quorum.device.sync_timeout")) {
	if (new_val.data) {
	qdevice_sync_timeout =
	((uint32_t ) new_val.data) / 1000;
	} else {
	qdevice_sync_timeout =
	VOTEQUORUM_QDEVICE_DEFAULT_SYNC_TIMEOUT / 1000;
	}
	} else {
	return;
	}
	break;
	#else
	return;
	#endif
	default:
	return;
	}
	break;
	case CMAP_TRACK_DELETE:
	switch (new_val.type) {
	case CMAP_VALUETYPE_UINT8:
	#if CHECK_TWO_NODE
	if (!strcmp(key_name, "quorum.two_node")) {
	two_node = false;
	} else {
	return;
	}
	break;
	#else
	return;
	#endif
	case CMAP_VALUETYPE_STRING:
	#if CHECK_QDEVICE_SYNC_TIMEOUT
	if (!strcmp(key_name, "quorum.device.model")) {
	using_qdevice = false;
	} else {
	return;
	}
	break;
	#else
	return;
	#endif
	case CMAP_VALUETYPE_UINT32:
	#if CHECK_QDEVICE_SYNC_TIMEOUT
	if (!strcmp(key_name, "quorum.device.sync_timeout")) {
	qdevice_sync_timeout =
	VOTEQUORUM_QDEVICE_DEFAULT_SYNC_TIMEOUT / 1000;
	} else {
	return;
	}
	break;
	#else
	return;
	#endif
	default:
	return;
	}
	break;
	default:
	return;
	}
	sbd_cpg_membership_health_update();
	notify_parent();
	}

	static gboolean
	-cmap_dispatch_callback (gpointer user_data)
	+cmap_dispatch_callback (gint cmap_fd,
	+ GIOCondition condition,
	+ gpointer user_data)
	{
	+ /* CMAP connection lost */
	+ if (condition & G_IO_HUP) {
	+ cl_log(LOG_WARNING, "CMAP service connection lost\n");
	+ clean_up(EXIT_CLUSTER_DISCONNECT);
	+ /* remove the source from the main loop */
	+ return G_SOURCE_REMOVE; /* never reached */
	+ }
	cmap_dispatch(cmap_handle, CS_DISPATCH_ALL);
	- return TRUE;
	+ return G_SOURCE_CONTINUE;
	}

	static void
	cmap_destroy(void)
	{
	if (cmap_source) {
	g_source_destroy(cmap_source);
	cmap_source = NULL;
	}

	if (track_handle) {
	cmap_track_delete(cmap_handle, track_handle);
	track_handle = 0;
	}

	if (cmap_handle) {
	cmap_finalize(cmap_handle);
	cmap_handle = 0;
	}
	}

	static gboolean
	verify_against_cmap_config(void)
	{
	#if CHECK_TWO_NODE
	uint8_t two_node_u8 = 0;
	#endif
	#if CHECK_QDEVICE_SYNC_TIMEOUT
	char *qdevice_model = NULL;
	#endif
	int cmap_fd;

	if (!track_handle) {
	if (cmap_initialize(&cmap_handle) != CS_OK) {
	cl_log(LOG_WARNING, "Cannot initialize CMAP service\n");
	goto out;
	}

	#if CHECK_TWO_NODE
	if (cmap_track_add(cmap_handle, "quorum.two_node",
	CMAP_TRACK_DELETE\|CMAP_TRACK_MODIFY\|CMAP_TRACK_ADD,
	sbd_cmap_notify_fn, NULL, &track_handle) != CS_OK) {
	cl_log(LOG_WARNING, "Failed adding CMAP tracker for 2Node-mode\n");
	goto out;
	}
	#endif

	#if CHECK_QDEVICE_SYNC_TIMEOUT
	if (cmap_track_add(cmap_handle, "quorum.device.model",
	CMAP_TRACK_DELETE\|CMAP_TRACK_MODIFY\|CMAP_TRACK_ADD,
	sbd_cmap_notify_fn, NULL, &track_handle) != CS_OK) {
	cl_log(LOG_WARNING, "Failed adding CMAP tracker for qdevice-model\n");
	goto out;
	}

	if (cmap_track_add(cmap_handle, "quorum.device.sync_timeout",
	CMAP_TRACK_DELETE\|CMAP_TRACK_MODIFY\|CMAP_TRACK_ADD,
	sbd_cmap_notify_fn, NULL, &track_handle) != CS_OK) {
	cl_log(LOG_WARNING,
	"Failed adding CMAP tracker for qdevice-sync_timeout\n");
	goto out;
	}
	#endif

	/* add the tracker to mainloop */
	if (cmap_fd_get(cmap_handle, &cmap_fd) != CS_OK) {
	cl_log(LOG_WARNING, "Failed to get a file handle for cmap\n");
	goto out;
	}

	if (!(cmap_source = g_unix_fd_source_new (cmap_fd, G_IO_IN))) {
	cl_log(LOG_WARNING, "Couldn't create source for cmap\n");
	goto out;
	}
	- g_source_set_callback(cmap_source, cmap_dispatch_callback, NULL, NULL);
	+ g_source_set_callback(cmap_source, G_SOURCE_FUNC(cmap_dispatch_callback), NULL, NULL);
	g_source_attach(cmap_source, NULL);
	}

	#if CHECK_TWO_NODE
	if (cmap_get_uint8(cmap_handle, "quorum.two_node", &two_node_u8)
	== CS_OK) {
	cl_log(two_node_u8? LOG_NOTICE : LOG_INFO,
	"Corosync is%s in 2Node-mode", two_node_u8?"":" not");
	two_node = two_node_u8;
	} else {
	cl_log(LOG_INFO, "quorum.two_node not present in cmap\n");
	}
	#endif

	#if CHECK_QDEVICE_SYNC_TIMEOUT
	if (cmap_get_string(cmap_handle, "quorum.device.model",
	&qdevice_model) == CS_OK) {
	using_qdevice = qdevice_model && strlen(qdevice_model);
	cl_log(using_qdevice? LOG_NOTICE : LOG_INFO,
	"Corosync is%s using qdevice", using_qdevice?"":" not");
	} else {
	cl_log(LOG_INFO, "quorum.device.model not present in cmap\n");
	}

	if (cmap_get_uint32(cmap_handle, "quorum.device.sync_timeout",
	&qdevice_sync_timeout) == CS_OK) {
	qdevice_sync_timeout /= 1000;
	cl_log(LOG_INFO,
	"Corosync is using qdevice-sync_timeout=%ds",
	qdevice_sync_timeout);
	} else {
	cl_log(LOG_INFO,
	"quorum.device.sync_timeout not present in cmap\n");
	}
	#endif

	return TRUE;

	out:
	cmap_destroy();

	return FALSE;
	}
	#endif
	#endif

	static gboolean
	notify_timer_cb(gpointer data)
	{
	cl_log(LOG_DEBUG, "Refreshing %sstate", remote_node?"remote ":"");

	if(remote_node) {
	sbd_remote_check(NULL);
	return TRUE;
	}

	switch (get_cluster_type()) {
	#if HAVE_DECL_PCMK_CLUSTER_CLASSIC_AIS
	case pcmk_cluster_classic_ais:
	send_cluster_text(crm_class_quorum, NULL, TRUE, NULL, crm_msg_ais);
	break;

	#endif
	case pcmk_cluster_corosync:
	do {
	#if SUPPORT_COROSYNC && CHECK_VOTEQUORUM_HANDLE
	struct votequorum_info info;

	if (votequorum_getinfo(votequorum_handle, 0, &info) != CS_OK) {

	votequorum_finalize(votequorum_handle);
	if (votequorum_initialize(&votequorum_handle, NULL) != CS_OK) {
	votequorum_handle = 0;
	break;
	}
	if (votequorum_getinfo(votequorum_handle, 0, &info) != CS_OK) {
	break;
	}
	}
	#endif
	notify_parent();
	} while (0);
	break;

	#if HAVE_DECL_PCMK_CLUSTER_CMAN
	case pcmk_cluster_cman:

	notify_parent();
	break;
	#endif

	default:
	break;
	}
	return TRUE;
	}


	static void
	sbd_membership_connect(void)
	{
	bool connected = false;

	cl_log(LOG_INFO, "Attempting cluster connection");

	cluster.destroy = sbd_membership_destroy;

	#if SUPPORT_PLUGIN
	cluster.cpg.cpg_deliver_fn = sbd_plugin_membership_dispatch;
	#endif

	#if SUPPORT_COROSYNC
	cluster.cpg.cpg_confchg_fn = sbd_cpg_membership_dispatch;
	#endif

	while(connected == false) {

	enum cluster_type_e stack = get_cluster_type();
	if(get_cluster_type() == pcmk_cluster_unknown) {
	crm_debug("Attempting pacemaker remote connection");
	/* Nothing is up, go looking for the pacemaker remote process */
	if(find_pacemaker_remote() > 0) {
	connected = true;
	}

	} else {
	cl_log(LOG_INFO, "Attempting connection to %s", name_for_cluster_type(stack));

	#if SUPPORT_COROSYNC && (CHECK_TWO_NODE \|\| CHECK_QDEVICE_SYNC_TIMEOUT)
	if (verify_against_cmap_config()) {
	#endif

	if(crm_cluster_connect(&cluster)) {
	connected = true;
	}

	#if SUPPORT_COROSYNC && (CHECK_TWO_NODE \|\| CHECK_QDEVICE_SYNC_TIMEOUT)
	}
	#endif
	}

	if(connected == false) {
	cl_log(LOG_INFO, "Failed, retrying in %ds", reconnect_msec / 1000);
	sleep(reconnect_msec / 1000);
	}
	}

	set_servant_health(pcmk_health_transient, LOG_INFO, "Connected, waiting for initial membership");
	notify_parent();

	notify_timer_cb(NULL);
	}

	static void
	sbd_membership_destroy(gpointer user_data)
	{
	cl_log(LOG_WARNING, "Lost connection to %s", name_for_cluster_type(get_cluster_type()));

	if (get_cluster_type() != pcmk_cluster_unknown) {
	#if SUPPORT_COROSYNC && (CHECK_TWO_NODE \|\| CHECK_QDEVICE_SYNC_TIMEOUT)
	cmap_destroy();
	#endif
	}

	set_servant_health(pcmk_health_unclean, LOG_ERR, "Cluster connection terminated");
	notify_parent();

	/* Attempt to reconnect, the watchdog will take the node down if the problem isn't transient */
	sbd_membership_connect();
	}

	/*
	* \internal
	* \brief Get process ID and name associated with a /proc directory entry
	*
	* \param[in] entry Directory entry (must be result of readdir() on /proc)
	* \param[out] name If not NULL, a char[16] to hold the process name
	* \param[out] pid If not NULL, will be set to process ID of entry
	*
	* \return 0 on success, -1 if entry is not for a process or info not found
	*
	* \note This should be called only on Linux systems, as not all systems that
	* support /proc store process names and IDs in the same way.
	* Copied from the Pacemaker implementation.
	*/
	int
	sbd_procfs_process_info(struct dirent entry, char name, int *pid)
	{
	int fd, local_pid;
	FILE *file;
	struct stat statbuf;
	char procpath[128] = { 0 };

	/* We're only interested in entries whose name is a PID,
	* so skip anything non-numeric or that is too long.
	*
	* 114 = 128 - strlen("/proc/") - strlen("/status") - 1
	*/
	local_pid = atoi(entry->d_name);
	if ((local_pid <= 0) \|\| (strlen(entry->d_name) > 114)) {
	return -1;
	}
	if (pid) {
	*pid = local_pid;
	}

	/* Get this entry's file information */
	strcpy(procpath, "/proc/");
	strcat(procpath, entry->d_name);
	fd = open(procpath, O_RDONLY);
	if (fd < 0 ) {
	return -1;
	}
	if (fstat(fd, &statbuf) < 0) {
	close(fd);
	return -1;
	}
	close(fd);

	/* We're only interested in subdirectories */
	if (!S_ISDIR(statbuf.st_mode)) {
	return -1;
	}

	/* Read the first entry ("Name:") from the process's status file.
	* We could handle the valgrind case if we parsed the cmdline file
	* instead, but that's more of a pain than it's worth.
	*/
	if (name != NULL) {
	strcat(procpath, "/status");
	file = fopen(procpath, "r");
	if (!file) {
	return -1;
	}
	if (fscanf(file, "Name:\t%15[a-zA-Z0-9 _-]", name) != 1) {
	fclose(file);
	return -1;
	}
	fclose(file);
	}

	return 0;
	}


	static gboolean
	sbd_remote_check(gpointer user_data)
	{
	static int have_proc_pid = 0;

	int running = 0;

	cl_log(LOG_DEBUG, "Checking pacemaker remote connection: %d/%d", have_proc_pid, remoted_pid);

	if(have_proc_pid == 0) {
	char proc_path[PATH_MAX], exe_path[PATH_MAX];

	/* check to make sure pid hasn't been reused by another process */
	snprintf(proc_path, sizeof(proc_path), "/proc/%lu/exe", (long unsigned int)getpid());

	have_proc_pid = 1;
	if(readlink(proc_path, exe_path, PATH_MAX - 1) < 0) {
	have_proc_pid = -1;
	}
	}

	if (remoted_pid <= 0) {
	set_servant_health(pcmk_health_transient, LOG_WARNING, "No Pacemaker Remote connection");
	goto notify;

	} else if (kill(remoted_pid, 0) < 0 && errno == ESRCH) {
	/* Not running */

	} else if(have_proc_pid == -1) {
	running = 1;
	cl_log(LOG_DEBUG, "Poccess %ld is active", (long)remoted_pid);

	} else {
	int rc = 0;
	char proc_path[PATH_MAX], exe_path[PATH_MAX];

	/* check to make sure pid hasn't been reused by another process */
	snprintf(proc_path, sizeof(proc_path), "/proc/%lu/exe", (long unsigned int)remoted_pid);

	rc = readlink(proc_path, exe_path, PATH_MAX - 1);
	if (rc < 0) {
	crm_perror(LOG_ERR, "Could not read from %s", proc_path);
	goto done;
	}
	exe_path[rc] = 0;

	if (strcmp(exe_path, SBINDIR "/" PACEMAKER_REMOTE_BINARY) == 0) {
	cl_log(LOG_DEBUG, "Process %s (%ld) is active",
	exe_path, (long)remoted_pid);
	running = 1;
	}
	}

	done:

	if(running) {
	set_servant_health(pcmk_health_online, LOG_INFO,
	"Connected to Pacemaker Remote %lu", (long unsigned int)remoted_pid);
	} else {
	set_servant_health(pcmk_health_unclean, LOG_WARNING,
	"Connection to Pacemaker Remote %lu lost", (long unsigned int)remoted_pid);
	}

	notify:
	notify_parent();

	if(running == 0) {
	sbd_membership_connect();
	}
	return true;
	}

	static long unsigned int
	find_pacemaker_remote(void)
	{
	DIR *dp;
	char entry_name[16];
	struct dirent *entry;

	dp = opendir("/proc");
	if (!dp) {
	/* no proc directory to search through */
	cl_log(LOG_NOTICE, "Can not read /proc directory to track existing components");
	return FALSE;
	}

	while ((entry = readdir(dp)) != NULL) {
	int pid;

	if (sbd_procfs_process_info(entry, entry_name, &pid) < 0) {
	continue;
	}

	/* entry_name is truncated to 16 characters including the nul terminator */
	cl_log(LOG_DEBUG, "Found %s at %u", entry_name, pid);
	if (strncmp(entry_name, PACEMAKER_REMOTE_BINARY, 15) == 0) {
	cl_log(LOG_NOTICE, "Found Pacemaker Remote at PID %u", pid);
	remoted_pid = pid;
	remote_node = true;
	break;
	}
	}

	closedir(dp);

	return remoted_pid;
	}

	static void
	clean_up(int rc)
	{
	#if CHECK_VOTEQUORUM_HANDLE
	votequorum_finalize(votequorum_handle);
	votequorum_handle = 0; /* there isn't really an invalid handle value
	* just to be back where we started
	*/
	#endif
	+
	+#if SUPPORT_COROSYNC && CHECK_TWO_NODE
	+ cmap_destroy();
	+#endif
	+
	+ if (rc >= 0) {
	+ exit(rc);
	+ }
	+
	return;
	}

	static void
	cluster_shutdown(int nsig)
	{
	clean_up(0);
	}

	int
	servant_cluster(const char diskname, int mode, const void argp)
	{
	enum cluster_type_e cluster_stack = get_cluster_type();

	crm_system_name = strdup("sbd:cluster");
	cl_log(LOG_NOTICE, "Monitoring %s cluster health", name_for_cluster_type(cluster_stack));
	set_proc_title("sbd: watcher: Cluster");

	sbd_membership_connect();

	/* stonith_our_uname = cluster.uname; */
	/* stonith_our_uuid = cluster.uuid; */

	mainloop = g_main_loop_new(NULL, FALSE);
	notify_timer = g_timeout_add(timeout_loop * 1000, notify_timer_cb, NULL);

	mainloop_add_signal(SIGTERM, cluster_shutdown);
	mainloop_add_signal(SIGINT, cluster_shutdown);

	g_main_loop_run(mainloop);
	g_main_loop_unref(mainloop);

	clean_up(0);
	return 0; /* never reached */
	}
	diff --git a/src/sbd-inquisitor.c b/src/sbd-inquisitor.c
	index 4fec2fd..5f8d5d0 100644
	--- a/src/sbd-inquisitor.c
	+++ b/src/sbd-inquisitor.c
	@@ -1,1334 +1,1348 @@
	/*
	* Copyright (C) 2013 Lars Marowsky-Bree <lmb@suse.com>
	*
	* 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 program; if not, write to the Free Software Foundation, Inc.,
	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	*/

	#include <crm/common/util.h>
	#include "sbd.h"
	#define LOCKSTRLEN 11

	static struct servants_list_item *servants_leader = NULL;

	int disk_priority = 1;
	int check_pcmk = 1;
	int check_cluster = 1;
	int disk_count = 0;
	int servant_count = 0;
	int servant_restart_interval = 5;
	int servant_restart_count = 1;
	int start_mode = 0;
	char* pidfile = NULL;
	bool do_flush = true;
	char timeout_sysrq_char = 'b';
	bool move_to_root_cgroup = true;
	bool enforce_moving_to_root_cgroup = false;
	bool sync_resource_startup = false;

	int parse_device_line(const char *line);

	static const char *
	get_env_option(const char *option)
	{
	const char *value = getenv(option);
	size_t max = 0;
	size_t lpc = 0;

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

	max = strlen(value);

	for (lpc = 0; lpc < max; lpc++) {
	if (!isspace(value[lpc])) {
	break;
	}
	}

	return (strlen(value + lpc) > 0 ? (value + lpc) : NULL);
	}

	static int
	recruit_servant(const char *devname, pid_t pid)
	{
	struct servants_list_item *s = servants_leader;
	struct servants_list_item *newbie;

	if (lookup_servant_by_dev(devname)) {
	cl_log(LOG_DEBUG, "Servant %s already exists", devname);
	return 0;
	}

	newbie = malloc(sizeof(*newbie));
	if (newbie) {
	memset(newbie, 0, sizeof(*newbie));
	newbie->devname = strdup(devname);
	newbie->pid = pid;
	newbie->first_start = 1;
	}
	if (!newbie \|\| !newbie->devname) {
	fprintf(stderr, "heap allocation failed in recruit_servant.\n");
	exit(1);
	}

	/* some sanity-check on our newbie */
	if (sbd_is_disk(newbie)) {
	cl_log(LOG_INFO, "Monitoring %s", devname);
	disk_count++;
	} else if (sbd_is_pcmk(newbie) \|\| sbd_is_cluster(newbie)) {
	/* alive just after pcmk and cluster servants have shown up */
	newbie->outdated = 1;
	} else {
	/* toss our newbie */
	cl_log(LOG_ERR, "Refusing to recruit unrecognized servant %s", devname);
	free((void *) newbie->devname);
	free(newbie);
	return -1;
	}

	if (!s) {
	servants_leader = newbie;
	} else {
	while (s->next)
	s = s->next;
	s->next = newbie;
	}

	servant_count++;

	return 0;
	}

	int assign_servant(const char* devname, functionp_t functionp, int mode, const void* argp)
	{
	pid_t pid = 0;
	int rc = 0;

	pid = fork();
	if (pid == 0) { /* child */
	maximize_priority();
	sbd_set_format_string(QB_LOG_SYSLOG, devname);
	rc = (*functionp)(devname, mode, argp);
	if (rc == -1)
	exit(1);
	else
	exit(0);
	} else if (pid != -1) { /* parent */
	return pid;
	} else {
	cl_log(LOG_ERR,"Failed to fork servant");
	exit(1);
	}
	}

	struct servants_list_item lookup_servant_by_dev(const char devname)
	{
	struct servants_list_item *s;

	for (s = servants_leader; s; s = s->next) {
	if (strcasecmp(s->devname, devname) == 0)
	break;
	}
	return s;
	}

	struct servants_list_item *lookup_servant_by_pid(pid_t pid)
	{
	struct servants_list_item *s;

	for (s = servants_leader; s; s = s->next) {
	if (s->pid == pid)
	break;
	}
	return s;
	}

	int check_all_dead(void)
	{
	struct servants_list_item *s;
	int r = 0;
	union sigval svalue;

	for (s = servants_leader; s; s = s->next) {
	if (s->pid != 0) {
	r = sigqueue(s->pid, 0, svalue);
	if (r == -1 && errno == ESRCH)
	continue;
	return 0;
	}
	}
	return 1;
	}

	void servant_start(struct servants_list_item *s)
	{
	int r = 0;
	union sigval svalue;

	if (s->pid != 0) {
	r = sigqueue(s->pid, 0, svalue);
	if ((r != -1 \|\| errno != ESRCH))
	return;
	}
	s->restarts++;
	if (sbd_is_disk(s)) {
	#if SUPPORT_SHARED_DISK
	DBGLOG(LOG_INFO, "Starting servant for device %s", s->devname);
	s->pid = assign_servant(s->devname, servant_md, start_mode, s);
	#else
	cl_log(LOG_ERR, "Shared disk functionality not supported");
	return;
	#endif
	} else if(sbd_is_pcmk(s)) {
	DBGLOG(LOG_INFO, "Starting Pacemaker servant");
	s->pid = assign_servant(s->devname, servant_pcmk, start_mode, NULL);

	} else if(sbd_is_cluster(s)) {
	DBGLOG(LOG_INFO, "Starting Cluster servant");
	s->pid = assign_servant(s->devname, servant_cluster, start_mode, NULL);

	} else {
	cl_log(LOG_ERR, "Unrecognized servant: %s", s->devname);
	}

	clock_gettime(CLOCK_MONOTONIC, &s->t_started);
	return;
	}

	void servants_start(void)
	{
	struct servants_list_item *s;

	for (s = servants_leader; s; s = s->next) {
	s->restarts = 0;
	servant_start(s);
	}
	}

	void servants_kill(void)
	{
	struct servants_list_item *s;
	union sigval svalue;

	for (s = servants_leader; s; s = s->next) {
	if (s->pid != 0)
	sigqueue(s->pid, SIGKILL, svalue);
	}
	}

	static inline void cleanup_servant_by_pid(pid_t pid)
	{
	struct servants_list_item* s;

	s = lookup_servant_by_pid(pid);
	if (s) {
	cl_log(LOG_WARNING, "Servant for %s (pid: %i) has terminated",
	s->devname, s->pid);
	s->pid = 0;
	} else {
	/* This most likely is a stray signal from somewhere, or
	* a SIGCHLD for a process that has previously
	* explicitly disconnected. */
	DBGLOG(LOG_INFO, "cleanup_servant: Nothing known about pid %i",
	pid);
	}
	}

	int inquisitor_decouple(void)
	{
	pid_t ppid = getppid();
	union sigval signal_value;

	/* During start-up, we only arm the watchdog once we've got
	* quorum at least once. */
	if (watchdog_use) {
	if (watchdog_init() < 0) {
	return -1;
	}
	}

	if (ppid > 1) {
	sigqueue(ppid, SIG_LIVENESS, signal_value);
	}
	return 0;
	}

	static int sbd_lock_running(long pid)
	{
	int rc = 0;
	long mypid;
	int running = 0;
	char proc_path[PATH_MAX], exe_path[PATH_MAX], myexe_path[PATH_MAX];

	/* check if pid is running */
	if (kill(pid, 0) < 0 && errno == ESRCH) {
	goto bail;
	}

	#ifndef HAVE_PROC_PID
	return 1;
	#endif

	/* check to make sure pid hasn't been reused by another process */
	snprintf(proc_path, sizeof(proc_path), "/proc/%lu/exe", pid);
	rc = readlink(proc_path, exe_path, PATH_MAX-1);
	if(rc < 0) {
	cl_perror("Could not read from %s", proc_path);
	goto bail;
	}
	exe_path[rc] = 0;
	mypid = (unsigned long) getpid();
	snprintf(proc_path, sizeof(proc_path), "/proc/%lu/exe", mypid);
	rc = readlink(proc_path, myexe_path, PATH_MAX-1);
	if(rc < 0) {
	cl_perror("Could not read from %s", proc_path);
	goto bail;
	}
	myexe_path[rc] = 0;

	if(strcmp(exe_path, myexe_path) == 0) {
	running = 1;
	}

	bail:
	return running;
	}

	static int
	sbd_lock_pidfile(const char *filename)
	{
	char lf_name[256], tf_name[256], buf[LOCKSTRLEN+1];
	int fd;
	long pid, mypid;
	int rc;
	struct stat sbuf;

	if (filename == NULL) {
	errno = EFAULT;
	return -1;
	}

	mypid = (unsigned long) getpid();
	snprintf(lf_name, sizeof(lf_name), "%s",filename);
	snprintf(tf_name, sizeof(tf_name), "%s.%lu",
	filename, mypid);

	if ((fd = open(lf_name, O_RDONLY)) >= 0) {
	if (fstat(fd, &sbuf) >= 0 && sbuf.st_size < LOCKSTRLEN) {
	sleep(1); /* if someone was about to create one,
	* give'm a sec to do so
	* Though if they follow our protocol,
	* this won't happen. They should really
	* put the pid in, then link, not the
	* other way around.
	*/
	}
	if (read(fd, buf, sizeof(buf)) < 1) {
	/* lockfile empty -> rm it and go on */;
	} else {
	if (sscanf(buf, "%ld", &pid) < 1) {
	/* lockfile screwed up -> rm it and go on */
	} else {
	if (pid > 1 && (getpid() != pid)
	&& sbd_lock_running(pid)) {
	/* is locked by existing process
	* -> give up */
	close(fd);
	return -1;
	} else {
	/* stale lockfile -> rm it and go on */
	}
	}
	}
	unlink(lf_name);
	close(fd);
	}
	if ((fd = open(tf_name, O_CREAT \| O_WRONLY \| O_EXCL, 0644)) < 0) {
	/* Hmmh, why did we fail? Anyway, nothing we can do about it */
	return -3;
	}

	/* Slight overkill with the %d format ;-) /
	snprintf(buf, sizeof(buf), "%*lu\n", LOCKSTRLEN-1, mypid);

	if (write(fd, buf, LOCKSTRLEN) != LOCKSTRLEN) {
	/* Again, nothing we can do about this */
	rc = -3;
	close(fd);
	goto out;
	}
	close(fd);

	switch (link(tf_name, lf_name)) {
	case 0:
	if (stat(tf_name, &sbuf) < 0) {
	/* something weird happened */
	rc = -3;
	break;
	}
	if (sbuf.st_nlink < 2) {
	/* somehow, it didn't get through - NFS trouble? */
	rc = -2;
	break;
	}
	rc = 0;
	break;
	case EEXIST:
	rc = -1;
	break;
	default:
	rc = -3;
	}
	out:
	unlink(tf_name);
	return rc;
	}


	/*
	* Unlock a file (remove its lockfile)
	* do we need to check, if its (still) ours? No, IMHO, if someone else
	* locked our line, it's his fault -tho
	* returns 0 on success
	* <0 if some failure occured
	*/

	static int
	sbd_unlock_pidfile(const char *filename)
	{
	char lf_name[256];

	if (filename == NULL) {
	errno = EFAULT;
	return -1;
	}

	snprintf(lf_name, sizeof(lf_name), "%s", filename);

	return unlink(lf_name);
	}

	int cluster_alive(bool all)
	{
	int alive = 1;
	struct servants_list_item* s;

	if(servant_count == disk_count) {
	return 0;
	}

	for (s = servants_leader; s; s = s->next) {
	if (sbd_is_cluster(s) \|\| sbd_is_pcmk(s)) {
	if(s->outdated) {
	alive = 0;
	} else if(all == false) {
	return 1;
	}
	}
	}

	return alive;
	}

	int quorum_read(int good_servants)
	{
	if (disk_count > 2)
	return (good_servants > disk_count/2);
	else
	return (good_servants > 0);
	}

	void inquisitor_child(void)
	{
	int sig, pid;
	sigset_t procmask;
	siginfo_t sinfo;
	int status;
	struct timespec timeout;
	int exiting = 0;
	int decoupled = 0;
	int cluster_appeared = 0;
	int pcmk_override = 0;
	time_t latency;
	struct timespec t_last_tickle, t_now;
	struct servants_list_item* s;

	if (debug_mode) {
	cl_log(LOG_ERR, "DEBUG MODE %d IS ACTIVE - DO NOT RUN IN PRODUCTION!", debug_mode);
	}

	set_proc_title("sbd: inquisitor");

	if (pidfile) {
	if (sbd_lock_pidfile(pidfile) < 0) {
	exit(1);
	}
	}

	sigemptyset(&procmask);
	sigaddset(&procmask, SIGCHLD);
	sigaddset(&procmask, SIGTERM);
	sigaddset(&procmask, SIG_LIVENESS);
	sigaddset(&procmask, SIG_EXITREQ);
	sigaddset(&procmask, SIG_TEST);
	sigaddset(&procmask, SIG_PCMK_UNHEALTHY);
	sigaddset(&procmask, SIG_RESTART);
	sigaddset(&procmask, SIGUSR1);
	sigaddset(&procmask, SIGUSR2);
	sigprocmask(SIG_BLOCK, &procmask, NULL);

	servants_start();

	timeout.tv_sec = timeout_loop;
	timeout.tv_nsec = 0;
	clock_gettime(CLOCK_MONOTONIC, &t_last_tickle);

	while (1) {
	bool tickle = 0;
	bool can_detach = 0;
	int good_servants = 0;

	sig = sigtimedwait(&procmask, &sinfo, &timeout);

	clock_gettime(CLOCK_MONOTONIC, &t_now);

	if (sig == SIG_EXITREQ \|\| sig == SIGTERM) {
	servants_kill();
	watchdog_close(true);
	exiting = 1;
	} else if (sig == SIGCHLD) {
	while ((pid = waitpid(-1, &status, WNOHANG))) {
	if (pid == -1 && errno == ECHILD) {
	break;
	} else {
	s = lookup_servant_by_pid(pid);
	if (sbd_is_disk(s)) {
	if (WIFEXITED(status)) {
	switch(WEXITSTATUS(status)) {
	case EXIT_MD_SERVANT_IO_FAIL:
	DBGLOG(LOG_INFO, "Servant for %s requests to be disowned",
	s->devname);
	break;
	case EXIT_MD_SERVANT_REQUEST_RESET:
	cl_log(LOG_WARNING, "%s requested a reset", s->devname);
	do_reset();
	break;
	case EXIT_MD_SERVANT_REQUEST_SHUTOFF:
	cl_log(LOG_WARNING, "%s requested a shutoff", s->devname);
	do_off();
	break;
	case EXIT_MD_SERVANT_REQUEST_CRASHDUMP:
	cl_log(LOG_WARNING, "%s requested a crashdump", s->devname);
	do_crashdump();
	break;
	default:
	break;
	}
	}
	} else if (sbd_is_pcmk(s)) {
	if (WIFEXITED(status)) {
	switch(WEXITSTATUS(status)) {
	case EXIT_PCMK_SERVANT_GRACEFUL_SHUTDOWN:
	DBGLOG(LOG_INFO, "PCMK-Servant has exited gracefully");
	/* revert to state prior to pacemaker-detection */
	s->restarts = 0;
	s->restart_blocked = 0;
	cluster_appeared = 0;
	s->outdated = 1;
	s->t_last.tv_sec = 0;
	break;
	default:
	break;
	}
	}
	+ } else if (sbd_is_cluster(s)) {
	+ if (WIFEXITED(status)) {
	+ switch(WEXITSTATUS(status)) {
	+ case EXIT_CLUSTER_DISCONNECT:
	+ cl_log(LOG_WARNING, "Cluster-Servant has exited (connection lost)");
	+ s->restarts = 0;
	+ s->restart_blocked = 0;
	+ s->outdated = 1;
	+ s->t_last.tv_sec = 0;
	+ break;
	+ default:
	+ break;
	+ }
	+ }
	}
	cleanup_servant_by_pid(pid);
	}
	}
	} else if (sig == SIG_PCMK_UNHEALTHY) {
	s = lookup_servant_by_pid(sinfo.si_pid);
	if (sbd_is_cluster(s) \|\| sbd_is_pcmk(s)) {
	if (s->outdated == 0) {
	cl_log(LOG_WARNING, "%s health check: UNHEALTHY", s->devname);
	}
	s->t_last.tv_sec = 1;
	} else {
	cl_log(LOG_WARNING, "Ignoring SIG_PCMK_UNHEALTHY from unknown source");
	}
	} else if (sig == SIG_LIVENESS) {
	s = lookup_servant_by_pid(sinfo.si_pid);
	if (s) {
	s->first_start = 0;
	clock_gettime(CLOCK_MONOTONIC, &s->t_last);
	}

	} else if (sig == SIG_TEST) {
	} else if (sig == SIGUSR1) {
	if (exiting)
	continue;
	servants_start();
	}

	if (exiting) {
	if (check_all_dead()) {
	if (pidfile) {
	sbd_unlock_pidfile(pidfile);
	}
	exit(0);
	} else
	continue;
	}

	good_servants = 0;
	for (s = servants_leader; s; s = s->next) {
	int age = t_now.tv_sec - s->t_last.tv_sec;

	if (!s->t_last.tv_sec)
	continue;

	if (age < (int)(timeout_io+timeout_loop)) {
	if (sbd_is_disk(s)) {
	good_servants++;
	}
	if (s->outdated) {
	cl_log(LOG_NOTICE, "Servant %s is healthy (age: %d)", s->devname, age);
	}
	s->outdated = 0;

	} else if (!s->outdated) {
	if (!s->restart_blocked) {
	cl_log(LOG_WARNING, "Servant %s is outdated (age: %d)", s->devname, age);
	}
	s->outdated = 1;
	}
	}

	if(disk_count == 0) {
	/* NO disks, everything is up to the cluster */

	if(cluster_alive(true)) {
	/* We LIVE! */
	if(cluster_appeared == false) {
	cl_log(LOG_INFO, "Active cluster detected");
	}
	tickle = 1;
	can_detach = 1;
	cluster_appeared = 1;

	} else if(cluster_alive(false)) {
	if(!decoupled) {
	/* On the way up, detach and arm the watchdog */
	cl_log(LOG_INFO, "Partial cluster detected, detaching");
	}

	can_detach = 1;
	tickle = !cluster_appeared;

	} else if(!decoupled) {
	/* Stay alive until the cluster comes up */
	tickle = !cluster_appeared;
	}

	} else if(disk_priority == 1 \|\| servant_count == disk_count) {
	if (quorum_read(good_servants)) {
	/* There are disks and we're connected to the majority of them */
	tickle = 1;
	can_detach = 1;
	pcmk_override = 0;

	} else if (servant_count > disk_count && cluster_alive(true)) {
	tickle = 1;

	if(!pcmk_override) {
	cl_log(LOG_WARNING, "Majority of devices lost - surviving on pacemaker");
	pcmk_override = 1; /* Only log this message once */
	}
	}

	} else if(cluster_alive(true) && quorum_read(good_servants)) {
	/* Both disk and cluster servants are healthy */
	tickle = 1;
	can_detach = 1;
	cluster_appeared = 1;

	} else if(quorum_read(good_servants)) {
	/* The cluster takes priority but only once
	* connected for the first time.
	*
	* Until then, we tickle based on disk quorum.
	*/
	can_detach = 1;
	tickle = !cluster_appeared;
	}

	/* cl_log(LOG_DEBUG, "Tickle: q=%d, g=%d, p=%d, s=%d", */
	/* quorum_read(good_servants), good_servants, tickle, disk_count); */

	if(tickle) {
	watchdog_tickle();
	clock_gettime(CLOCK_MONOTONIC, &t_last_tickle);
	}

	if (!decoupled && can_detach) {
	/* We only do this at the point either the disk or
	* cluster servants become healthy
	*/
	cl_log(LOG_DEBUG, "Decoupling");
	if (inquisitor_decouple() < 0) {
	servants_kill();
	exiting = 1;
	continue;
	} else {
	decoupled = 1;
	}
	}

	/* Note that this can actually be negative, since we set
	* last_tickle after we set now. */
	latency = t_now.tv_sec - t_last_tickle.tv_sec;
	if (timeout_watchdog && (latency > (int)timeout_watchdog)) {
	if (!decoupled) {
	/* We're still being watched by our
	* parent. We don't fence, but exit. */
	cl_log(LOG_ERR, "SBD: Not enough votes to proceed. Aborting start-up.");
	servants_kill();
	exiting = 1;
	continue;
	}
	if (debug_mode < 2) {
	/* At level 2 or above, we do nothing, but expect
	* things to eventually return to
	* normal. */
	do_timeout_action();
	} else {
	cl_log(LOG_ERR, "SBD: DEBUG MODE: Would have fenced due to timeout!");
	}
	}

	if (timeout_watchdog_warn && (latency > (int)timeout_watchdog_warn)) {
	cl_log(LOG_WARNING,
	"Latency: No liveness for %ds exceeds watchdog warning timeout of %ds (healthy servants: %d)",
	(int)latency, (int)timeout_watchdog_warn, good_servants);

	if (debug_mode && watchdog_use) {
	/* In debug mode, trigger a reset before the watchdog can panic the machine */
	do_timeout_action();
	}
	}

	for (s = servants_leader; s; s = s->next) {
	int age = t_now.tv_sec - s->t_started.tv_sec;

	if (age > servant_restart_interval) {
	s->restarts = 0;
	s->restart_blocked = 0;
	}

	if (servant_restart_count
	&& (s->restarts >= servant_restart_count)
	&& !s->restart_blocked) {
	if (servant_restart_count > 1) {
	cl_log(LOG_WARNING, "Max retry count (%d) reached: not restarting servant for %s",
	(int)servant_restart_count, s->devname);
	}
	s->restart_blocked = 1;
	}

	if (!s->restart_blocked) {
	servant_start(s);
	}
	}
	}
	/* not reached */
	exit(0);
	}

	int inquisitor(void)
	{
	int sig, pid, inquisitor_pid;
	int status;
	sigset_t procmask;
	siginfo_t sinfo;

	/* Where's the best place for sysrq init ?*/
	sysrq_init();

	sigemptyset(&procmask);
	sigaddset(&procmask, SIGCHLD);
	sigaddset(&procmask, SIG_LIVENESS);
	sigprocmask(SIG_BLOCK, &procmask, NULL);

	inquisitor_pid = make_daemon();
	if (inquisitor_pid == 0) {
	inquisitor_child();
	}

	/* We're the parent. Wait for a happy signal from our child
	* before we proceed - we either get "SIG_LIVENESS" when the
	* inquisitor has completed the first successful round, or
	* ECHLD when it exits with an error. */

	while (1) {
	sig = sigwaitinfo(&procmask, &sinfo);
	if (sig == SIGCHLD) {
	while ((pid = waitpid(-1, &status, WNOHANG))) {
	if (pid == -1 && errno == ECHILD) {
	break;
	}
	/* We got here because the inquisitor
	* did not succeed. */
	return -1;
	}
	} else if (sig == SIG_LIVENESS) {
	/* Inquisitor started up properly. */
	return 0;
	} else {
	fprintf(stderr, "Nobody expected the spanish inquisition!\n");
	continue;
	}
	}
	/* not reached */
	return -1;
	}


	int
	parse_device_line(const char *line)
	{
	size_t lpc = 0;
	size_t last = 0;
	size_t max = 0;
	int found = 0;
	bool skip_space = true;
	int space_run = 0;

	if (!line) {
	return 0;
	}

	max = strlen(line);

	cl_log(LOG_DEBUG, "Processing %d bytes: [%s]", (int) max, line);

	for (lpc = 0; lpc <= max; lpc++) {
	if (isspace(line[lpc])) {
	if (skip_space) {
	last = lpc + 1;
	} else {
	space_run++;
	}
	continue;
	}
	skip_space = false;
	if (line[lpc] == ';' \|\| line[lpc] == 0) {
	int rc = 0;
	char *entry = calloc(1, 1 + lpc - last);

	if (entry) {
	rc = sscanf(line + last, "%[^;]", entry);
	} else {
	fprintf(stderr, "Heap allocation failed parsing device-line.\n");
	exit(1);
	}

	if (rc != 1) {
	cl_log(LOG_WARNING, "Could not parse: '%s'", line + last);
	} else {
	entry[strlen(entry)-space_run] = '\0';
	cl_log(LOG_DEBUG, "Adding '%s'", entry);
	if (recruit_servant(entry, 0) != 0) {
	free(entry);
	// sbd should refuse to start if any of the configured device names is invalid.
	return -1;
	}
	found++;
	}

	free(entry);
	skip_space = true;
	last = lpc + 1;
	}
	space_run = 0;
	}
	return found;
	}

	#define SBD_SOURCE_FILES "sbd-cluster.c,sbd-common.c,sbd-inquisitor.c,sbd-md.c,sbd-pacemaker.c,setproctitle.c"

	static void
	sbd_log_filter_ctl(const char *files, uint8_t priority)
	{
	if (files == NULL) {
	files = SBD_SOURCE_FILES;
	}

	qb_log_filter_ctl(QB_LOG_SYSLOG, QB_LOG_FILTER_ADD, QB_LOG_FILTER_FILE, files, priority);
	qb_log_filter_ctl(QB_LOG_STDERR, QB_LOG_FILTER_ADD, QB_LOG_FILTER_FILE, files, priority);
	}

	int
	arg_enabled(int arg_count)
	{
	return arg_count % 2;
	}

	int main(int argc, char argv, char envp)
	{
	int exit_status = 0;
	int c;
	int W_count = 0;
	int c_count = 0;
	int P_count = 0;
	int qb_facility;
	const char *value = NULL;
	bool delay_start = false;
	long delay = 0;
	char *timeout_action = NULL;

	if ((cmdname = strrchr(argv[0], '/')) == NULL) {
	cmdname = argv[0];
	} else {
	++cmdname;
	}

	watchdogdev = strdup("/dev/watchdog");
	watchdogdev_is_default = true;
	qb_facility = qb_log_facility2int("daemon");
	qb_log_init(cmdname, qb_facility, LOG_WARNING);
	sbd_set_format_string(QB_LOG_SYSLOG, "sbd");

	qb_log_ctl(QB_LOG_SYSLOG, QB_LOG_CONF_ENABLED, QB_TRUE);
	qb_log_ctl(QB_LOG_STDERR, QB_LOG_CONF_ENABLED, QB_FALSE);
	sbd_log_filter_ctl(NULL, LOG_NOTICE);

	sbd_get_uname();

	value = get_env_option("SBD_PACEMAKER");
	if(value) {
	check_pcmk = crm_is_true(value);
	check_cluster = crm_is_true(value);
	}
	cl_log(LOG_INFO, "Enable pacemaker checks: %d (%s)", (int)check_pcmk, value?value:"default");

	value = get_env_option("SBD_STARTMODE");
	if(value == NULL) {
	} else if(strcmp(value, "clean") == 0) {
	start_mode = 1;
	} else if(strcmp(value, "always") == 0) {
	start_mode = 0;
	}
	cl_log(LOG_INFO, "Start mode set to: %d (%s)", (int)start_mode, value?value:"default");

	value = get_env_option("SBD_WATCHDOG_DEV");
	if(value) {
	free(watchdogdev);
	watchdogdev = strdup(value);
	watchdogdev_is_default = false;
	}

	/* SBD_WATCHDOG has been dropped from sbd.sysconfig example.
	* This is for backward compatibility. */
	value = get_env_option("SBD_WATCHDOG");
	if(value) {
	watchdog_use = crm_is_true(value);
	}

	value = get_env_option("SBD_WATCHDOG_TIMEOUT");
	if(value) {
	timeout_watchdog = crm_get_msec(value) / 1000;
	}

	value = get_env_option("SBD_PIDFILE");
	if(value) {
	pidfile = strdup(value);
	cl_log(LOG_INFO, "pidfile set to %s", pidfile);
	}

	value = get_env_option("SBD_DELAY_START");
	if(value) {
	delay_start = crm_is_true(value);

	if (!delay_start) {
	delay = crm_get_msec(value) / 1000;
	if (delay > 0) {
	delay_start = true;
	}
	}
	}
	cl_log(LOG_DEBUG, "Delay start: %s%s%s",
	delay_start? "yes (" : "no",
	delay_start? (delay > 0 ? value: "msgwait") : "",
	delay_start? ")" : "");

	value = get_env_option("SBD_TIMEOUT_ACTION");
	if(value) {
	timeout_action = strdup(value);
	}

	value = get_env_option("SBD_MOVE_TO_ROOT_CGROUP");
	if(value) {
	move_to_root_cgroup = crm_is_true(value);

	if (move_to_root_cgroup) {
	enforce_moving_to_root_cgroup = true;
	} else {
	if (strcmp(value, "auto") == 0) {
	move_to_root_cgroup = true;
	}
	}
	}

	while ((c = getopt(argc, argv, "czC:DPRTWZhvw:d:n:p:1:2:3:4:5:t:I:F:S:s:r:")) != -1) {
	switch (c) {
	case 'D':
	break;
	case 'Z':
	debug_mode++;
	cl_log(LOG_INFO, "Debug mode now at level %d", (int)debug_mode);
	break;
	case 'R':
	skip_rt = 1;
	cl_log(LOG_INFO, "Realtime mode deactivated.");
	break;
	case 'S':
	start_mode = atoi(optarg);
	cl_log(LOG_INFO, "Start mode set to: %d", (int)start_mode);
	break;
	case 's':
	timeout_startup = atoi(optarg);
	cl_log(LOG_INFO, "Start timeout set to: %d", (int)timeout_startup);
	break;
	case 'v':
	debug++;
	if(debug == 1) {
	sbd_log_filter_ctl(NULL, LOG_INFO);
	cl_log(LOG_INFO, "Verbose mode enabled.");

	} else if(debug == 2) {
	sbd_log_filter_ctl(NULL, LOG_DEBUG);
	cl_log(LOG_INFO, "Debug mode enabled.");

	} else if(debug == 3) {
	/* Go nuts, turn on pacemaker's logging too */
	sbd_log_filter_ctl("*", LOG_DEBUG);
	cl_log(LOG_INFO, "Debug library mode enabled.");
	}
	break;
	case 'T':
	watchdog_set_timeout = 0;
	cl_log(LOG_INFO, "Setting watchdog timeout disabled; using defaults.");
	break;
	case 'W':
	W_count++;
	break;
	case 'w':
	cl_log(LOG_NOTICE, "Using watchdog device '%s'", watchdogdev);
	free(watchdogdev);
	watchdogdev = strdup(optarg);
	watchdogdev_is_default = false;
	break;
	case 'd':
	#if SUPPORT_SHARED_DISK
	if (recruit_servant(optarg, 0) != 0) {
	fprintf(stderr, "Invalid device: %s\n", optarg);
	exit_status = -1;
	goto out;
	}
	#else
	fprintf(stderr, "Shared disk functionality not supported\n");
	exit_status = -2;
	goto out;
	#endif
	break;
	case 'c':
	c_count++;
	break;
	case 'P':
	P_count++;
	break;
	case 'z':
	disk_priority = 0;
	break;
	case 'n':
	local_uname = strdup(optarg);
	cl_log(LOG_INFO, "Overriding local hostname to %s", local_uname);
	break;
	case 'p':
	pidfile = strdup(optarg);
	cl_log(LOG_INFO, "pidfile set to %s", pidfile);
	break;
	case 'C':
	timeout_watchdog_crashdump = atoi(optarg);
	cl_log(LOG_INFO, "Setting crashdump watchdog timeout to %d",
	(int)timeout_watchdog_crashdump);
	break;
	case '1':
	timeout_watchdog = atoi(optarg);
	break;
	case '2':
	timeout_allocate = atoi(optarg);
	break;
	case '3':
	timeout_loop = atoi(optarg);
	break;
	case '4':
	timeout_msgwait = atoi(optarg);
	break;
	case '5':
	timeout_watchdog_warn = atoi(optarg);
	do_calculate_timeout_watchdog_warn = false;
	cl_log(LOG_INFO, "Setting latency warning to %d",
	(int)timeout_watchdog_warn);
	break;
	case 't':
	servant_restart_interval = atoi(optarg);
	cl_log(LOG_INFO, "Setting servant restart interval to %d",
	(int)servant_restart_interval);
	break;
	case 'I':
	timeout_io = atoi(optarg);
	cl_log(LOG_INFO, "Setting IO timeout to %d",
	(int)timeout_io);
	break;
	case 'F':
	servant_restart_count = atoi(optarg);
	cl_log(LOG_INFO, "Servant restart count set to %d",
	(int)servant_restart_count);
	break;
	case 'r':
	if (timeout_action) {
	free(timeout_action);
	}
	timeout_action = strdup(optarg);
	break;
	case 'h':
	usage();
	goto out;
	break;
	default:
	exit_status = -2;
	goto out;
	break;
	}
	}

	if (disk_count == 0) {
	/* if we already have disks from commandline
	then it is probably undesirable to add those
	from environment (general rule cmdline has precedence)
	*/
	value = get_env_option("SBD_DEVICE");
	if ((value) && strlen(value)) {
	#if SUPPORT_SHARED_DISK
	int devices = parse_device_line(value);
	if(devices < 1) {
	fprintf(stderr, "Invalid device line: %s\n", value);
	exit_status = -1;
	goto out;
	}
	#else
	fprintf(stderr, "Shared disk functionality not supported\n");
	exit_status = -2;
	goto out;
	#endif
	}
	}

	if (watchdogdev == NULL \|\| strcmp(watchdogdev, "/dev/null") == 0) {
	watchdog_use = 0;

	} else if (W_count > 0) {
	watchdog_use = arg_enabled(W_count);
	}

	if (watchdog_use) {
	cl_log(LOG_INFO, "Watchdog enabled.");
	} else {
	cl_log(LOG_INFO, "Watchdog disabled.");
	}

	if (c_count > 0) {
	check_cluster = arg_enabled(c_count);
	}

	if (P_count > 0) {
	check_pcmk = arg_enabled(P_count);
	}

	if ((disk_count > 0) && (strlen(local_uname) > SECTOR_NAME_MAX)) {
	fprintf(stderr, "Node name mustn't be longer than %d chars.\n",
	SECTOR_NAME_MAX);
	fprintf(stderr, "If uname is longer define a name to be used by sbd.\n");
	exit_status = -1;
	goto out;
	}

	if (disk_count > 3) {
	fprintf(stderr, "You can specify up to 3 devices via the -d option.\n");
	exit_status = -1;
	goto out;
	}

	/* There must at least be one command following the options: */
	if ((argc - optind) < 1) {
	fprintf(stderr, "Not enough arguments.\n");
	exit_status = -2;
	goto out;
	}

	if (init_set_proc_title(argc, argv, envp) < 0) {
	fprintf(stderr, "Allocation of proc title failed.\n");
	exit_status = -1;
	goto out;
	}

	if (timeout_action) {
	char *p[2];
	int i;
	char c;
	int nrflags = sscanf(timeout_action, "%m[a-z],%m[a-z]%c", &p[0], &p[1], &c);
	bool parse_error = (nrflags < 1) \|\| (nrflags > 2);

	for (i = 0; (i < nrflags) && (i < 2); i++) {
	if (!strcmp(p[i], "reboot")) {
	timeout_sysrq_char = 'b';
	} else if (!strcmp(p[i], "crashdump")) {
	timeout_sysrq_char = 'c';
	} else if (!strcmp(p[i], "off")) {
	timeout_sysrq_char = 'o';
	} else if (!strcmp(p[i], "flush")) {
	do_flush = true;
	} else if (!strcmp(p[i], "noflush")) {
	do_flush = false;
	} else {
	parse_error = true;
	}
	free(p[i]);
	}
	if (parse_error) {
	fprintf(stderr, "Failed to parse timeout-action \"%s\".\n",
	timeout_action);
	exit_status = -1;
	goto out;
	}
	}

	if (strcmp(argv[optind], "watch") == 0) {
	value = get_env_option("SBD_SYNC_RESOURCE_STARTUP");
	sync_resource_startup =
	crm_is_true(value?value:SBD_SYNC_RESOURCE_STARTUP_DEFAULT);

	#if !USE_PACEMAKERD_API
	if (sync_resource_startup) {
	fprintf(stderr, "Failed to sync resource-startup as "
	"SBD was built against pacemaker not supporting pacemakerd-API.\n");
	exit_status = -1;
	goto out;
	}
	#else
	if (!sync_resource_startup) {
	cl_log(LOG_WARNING, "SBD built against pacemaker supporting "
	"pacemakerd-API. Should think about enabling "
	"SBD_SYNC_RESOURCE_STARTUP.");
	}
	#endif
	}

	#if SUPPORT_SHARED_DISK
	if (strcmp(argv[optind], "create") == 0) {
	exit_status = init_devices(servants_leader);

	} else if (strcmp(argv[optind], "dump") == 0) {
	exit_status = dump_headers(servants_leader);

	} else if (strcmp(argv[optind], "allocate") == 0) {
	exit_status = allocate_slots(argv[optind + 1], servants_leader);

	} else if (strcmp(argv[optind], "list") == 0) {
	exit_status = list_slots(servants_leader);

	} else if (strcmp(argv[optind], "message") == 0) {
	exit_status = messenger(argv[optind + 1], argv[optind + 2], servants_leader);

	} else if (strcmp(argv[optind], "ping") == 0) {
	exit_status = ping_via_slots(argv[optind + 1], servants_leader);

	} else if (strcmp(argv[optind], "watch") == 0) {
	if(disk_count > 0) {
	/* If no devices are specified, its not an error to be unable to find one */
	open_any_device(servants_leader);
	}

	if (delay_start) {
	if (delay <= 0) {
	delay = get_first_msgwait(servants_leader);
	}

	sleep((unsigned long) delay);
	}

	} else {
	exit_status = -2;
	}
	#endif

	/* Re-calculate timeout_watchdog_warn based on any timeout_watchdog from:
	* SBD_WATCHDOG_TIMEOUT, -1 option or on-disk setting read with open_any_device() */
	if (do_calculate_timeout_watchdog_warn) {
	timeout_watchdog_warn = calculate_timeout_watchdog_warn(timeout_watchdog);
	}

	if (strcmp(argv[optind], "query-watchdog") == 0) {
	exit_status = watchdog_info();
	} else if (strcmp(argv[optind], "test-watchdog") == 0) {
	exit_status = watchdog_test();
	} else if (strcmp(argv[optind], "watch") == 0) {
	/* sleep $(sbd $SBD_DEVICE_ARGS dump \| grep -m 1 msgwait \| awk '{print $4}') 2>/dev/null */

	/* We only want this to have an effect during watch right now;
	* pinging and fencing would be too confused */
	cl_log(LOG_INFO, "Turning on pacemaker checks: %d", check_pcmk);
	if (check_pcmk) {
	recruit_servant("pcmk", 0);
	#if SUPPORT_PLUGIN
	check_cluster = 1;
	#endif
	}

	cl_log(LOG_INFO, "Turning on cluster checks: %d", check_cluster);
	if (check_cluster) {
	recruit_servant("cluster", 0);
	}

	cl_log(LOG_NOTICE, "%s flush + write \'%c\' to sysrq in case of timeout",
	do_flush?"Do":"Skip", timeout_sysrq_char);
	exit_status = inquisitor();
	}

	out:
	if (timeout_action) {
	free(timeout_action);
	}
	if (exit_status < 0) {
	if (exit_status == -2) {
	usage();
	} else {
	fprintf(stderr, "sbd failed; please check the logs.\n");
	}
	return (1);
	}
	return (0);
	}
	diff --git a/src/sbd.h b/src/sbd.h
	index 7c3c1ec..ecf7027 100644
	--- a/src/sbd.h
	+++ b/src/sbd.h
	@@ -1,218 +1,221 @@
	/*
	* Copyright (C) 2013 Lars Marowsky-Bree <lmb@suse.com>
	*
	* 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 program; if not, write to the Free Software Foundation, Inc.,
	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	*/

	#include <arpa/inet.h>
	#include <asm/unistd.h>
	#include <ctype.h>
	#include <errno.h>
	#include <fcntl.h>
	#include <libaio.h>
	#include <linux/fs.h>
	#include <linux/types.h>
	#include <linux/watchdog.h>
	#include <malloc.h>
	#include <signal.h>
	#include <stdio.h>
	#include <stdlib.h>
	#include <stdbool.h>
	#include <string.h>
	#include <sys/ioctl.h>
	#include <sys/ptrace.h>
	#include <sys/stat.h>
	#include <sys/types.h>
	#include <sys/utsname.h>
	#include <sys/wait.h>
	#include <syslog.h>
	#include <time.h>
	#include <unistd.h>
	#include <uuid/uuid.h>
	#include <qb/qblog.h>
	#include <crm_config.h>
	#include <config.h>

	/* signals reserved for multi-disk sbd */
	#define SIG_LIVENESS (SIGRTMIN + 1) /* report liveness of the disk */
	#define SIG_EXITREQ (SIGRTMIN + 2) /* exit request to inquisitor */
	#define SIG_TEST (SIGRTMIN + 3) /* trigger self test */
	#define SIG_RESTART (SIGRTMIN + 4) /* trigger restart of all failed disk */
	#define SIG_PCMK_UNHEALTHY (SIGRTMIN + 5)
	/* FIXME: should add dynamic check of SIG_XX >= SIGRTMAX */

	/* exit status for disk-servant */
	#define EXIT_MD_SERVANT_IO_FAIL 20
	#define EXIT_MD_SERVANT_REQUEST_RESET 21
	#define EXIT_MD_SERVANT_REQUEST_SHUTOFF 22
	#define EXIT_MD_SERVANT_REQUEST_CRASHDUMP 23

	/* exit status for pcmk-servant */
	#define EXIT_PCMK_SERVANT_GRACEFUL_SHUTDOWN 30

	+/* exit status for cluster-servant */
	+#define EXIT_CLUSTER_DISCONNECT 40
	+
	#define HOG_CHAR 0xff
	#define SECTOR_NAME_MAX 63

	/* Sector data types */
	struct sector_header_s {
	char magic[8];
	unsigned char version;
	unsigned char slots;
	/* Caveat: stored in network byte-order */
	uint32_t sector_size;
	uint32_t timeout_watchdog;
	uint32_t timeout_allocate;
	uint32_t timeout_loop;
	uint32_t timeout_msgwait;
	/* Minor version for extensions to the core data set:
	* compatible and optional values. */
	unsigned char minor_version;
	uuid_t uuid; /* 16 bytes */
	};

	struct sector_mbox_s {
	signed char cmd;
	char from[SECTOR_NAME_MAX+1];
	};

	struct sector_node_s {
	/* slots will be created with in_use == 0 */
	char in_use;
	char name[SECTOR_NAME_MAX+1];
	};

	struct servants_list_item {
	const char* devname;
	pid_t pid;
	int restarts;
	int restart_blocked;
	int outdated;
	int first_start;
	struct timespec t_last, t_started;
	struct servants_list_item *next;
	};

	struct sbd_context {
	int devfd;
	io_context_t ioctx;
	struct iocb io;
	};

	enum pcmk_health
	{
	pcmk_health_unknown,
	pcmk_health_pending,
	pcmk_health_transient,
	pcmk_health_unclean,
	pcmk_health_shutdown,
	pcmk_health_online,
	pcmk_health_noquorum,
	};

	void usage(void);
	int watchdog_init_interval(void);
	int watchdog_tickle(void);
	int watchdog_init(void);
	void sysrq_init(void);
	void watchdog_close(bool disarm);
	int watchdog_info(void);
	int watchdog_test(void);
	void sysrq_trigger(char t);
	void do_crashdump(void);
	void do_reset(void);
	void do_off(void);
	void do_timeout_action(void);
	pid_t make_daemon(void);
	void maximize_priority(void);
	void sbd_get_uname(void);
	void sbd_set_format_string(int method, const char *daemon);
	void notify_parent(void);

	/* Tunable defaults: */
	extern unsigned long timeout_watchdog;
	extern unsigned long timeout_watchdog_warn;
	extern bool do_calculate_timeout_watchdog_warn;
	extern unsigned long timeout_watchdog_crashdump;
	extern int timeout_allocate;
	extern int timeout_loop;
	extern int timeout_msgwait;
	extern int timeout_io;
	extern int timeout_startup;
	extern int watchdog_use;
	extern int watchdog_set_timeout;
	extern int skip_rt;
	extern int debug;
	extern int debug_mode;
	extern char *watchdogdev;
	extern bool watchdogdev_is_default;
	extern char* local_uname;
	extern bool do_flush;
	extern char timeout_sysrq_char;
	extern bool move_to_root_cgroup;
	extern bool enforce_moving_to_root_cgroup;
	extern bool sync_resource_startup;

	/* Global, non-tunable variables: */
	extern int sector_size;
	extern int watchdogfd;
	extern const char* cmdname;

	typedef int (functionp_t)(const char devname, int mode, const void* argp);

	int assign_servant(const char* devname, functionp_t functionp, int mode, const void* argp);

	#if SUPPORT_SHARED_DISK
	void open_any_device(struct servants_list_item *servants);
	int init_devices(struct servants_list_item *servants);
	int allocate_slots(const char name, struct servants_list_item servants);
	int list_slots(struct servants_list_item *servants);
	int ping_via_slots(const char name, struct servants_list_item servants);
	int dump_headers(struct servants_list_item *servants);
	unsigned long get_first_msgwait(struct servants_list_item *servants);
	int messenger(const char name, const char msg, struct servants_list_item *servants);
	int servant_md(const char diskname, int mode, const void argp);
	#endif

	int servant_pcmk(const char diskname, int mode, const void argp);
	int servant_cluster(const char diskname, int mode, const void argp);

	struct servants_list_item lookup_servant_by_dev(const char devname);
	struct servants_list_item *lookup_servant_by_pid(pid_t pid);

	int init_set_proc_title(int argc, char argv[], char envp[]);
	void set_proc_title(const char *fmt,...);

	#define cl_log(level, fmt, args...) qb_log_from_external_source( __func__, __FILE__, fmt, level, __LINE__, 0, ##args)

	# define cl_perror(fmt, args...) do { \
	const char *err = strerror(errno); \
	cl_log(LOG_ERR, fmt ": %s (%d)", ##args, err, errno); \
	} while(0)

	#define DBGLOG(lvl, fmt, args...) do { \
	if (debug > 0) cl_log(lvl, fmt, ##args); \
	} while(0)

	extern int servant_health;
	void set_servant_health(enum pcmk_health state, int level, char const *format, ...) __attribute__ ((__format__ (__printf__, 3, 4)));

	bool sbd_is_disk(struct servants_list_item *servant);
	bool sbd_is_pcmk(struct servants_list_item *servant);
	bool sbd_is_cluster(struct servants_list_item *servant);

	#define calculate_timeout_watchdog_warn(timeout) \
	(timeout < 5 ? 2 : \
	(timeout < (ULONG_MAX / 3) ? \
	(((unsigned long) timeout) * 3 / 5) : (((unsigned long) timeout) / 5 * 3)))

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