Beispiel #1
0
static int _init_cluster(void)
{
	SaAisErrorT err;
	SaVersionT  ver = { 'B', 1, 1 };
	int select_fd;

	node_hash = dm_hash_create(100);
	lock_hash = dm_hash_create(10);

	err = cpg_initialize(&cpg_handle,
			     &openais_cpg_callbacks);
	if (err != SA_AIS_OK) {
		syslog(LOG_ERR, "Cannot initialise OpenAIS CPG service: %d",
		       err);
		DEBUGLOG("Cannot initialise OpenAIS CPG service: %d", err);
		return ais_to_errno(err);
	}

	err = saLckInitialize(&lck_handle,
					NULL,
			      &ver);
	if (err != SA_AIS_OK) {
		cpg_initialize(&cpg_handle, &openais_cpg_callbacks);
		syslog(LOG_ERR, "Cannot initialise OpenAIS lock service: %d",
		       err);
		DEBUGLOG("Cannot initialise OpenAIS lock service: %d\n\n", err);
		return ais_to_errno(err);
	}

	/* Connect to the clvmd group */
	strcpy((char *)cpg_group_name.value, "clvmd");
	cpg_group_name.length = strlen((char *)cpg_group_name.value);
	err = cpg_join(cpg_handle, &cpg_group_name);
	if (err != SA_AIS_OK) {
		cpg_finalize(cpg_handle);
		saLckFinalize(lck_handle);
		syslog(LOG_ERR, "Cannot join clvmd process group");
		DEBUGLOG("Cannot join clvmd process group: %d\n", err);
		return ais_to_errno(err);
	}

	err = cpg_local_get(cpg_handle,
			    &our_nodeid);
	if (err != SA_AIS_OK) {
		cpg_finalize(cpg_handle);
		saLckFinalize(lck_handle);
		syslog(LOG_ERR, "Cannot get local node id\n");
		return ais_to_errno(err);
	}
	DEBUGLOG("Our local node id is %d\n", our_nodeid);

	saLckSelectionObjectGet(lck_handle, (SaSelectionObjectT *)&select_fd);
	add_internal_client(select_fd, lck_dispatch);

	DEBUGLOG("Connected to OpenAIS\n");

	return 0;
}
Beispiel #2
0
void init_lvhash()
{
	/* Create hash table for keeping LV locks & status */
	lv_hash = dm_hash_create(100);
	pthread_mutex_init(&lv_hash_lock, NULL);
	pthread_mutex_init(&lvm_lock, NULL);
}
static int _hash_create(void)
{
	if (!(_vgname_hash = dm_hash_create(128)))
		return 0;
	if (!(_pvname_hash = dm_hash_create(128))) {
		_hash_destroy_single(&_vgname_hash);
		return 0;
	}
	if (!(_lvname_hash = dm_hash_create(128))) {
		_hash_destroy_single(&_vgname_hash);
		_hash_destroy_single(&_pvname_hash);
		return 0;
	}
	if (!(_vgid_hash = dm_hash_create(128))) {
		_hash_destroy_single(&_vgname_hash);
		_hash_destroy_single(&_pvname_hash);
		_hash_destroy_single(&_lvname_hash);
		return 0;
	}
	return 1;
}
Beispiel #4
0
static int _init_hash(struct pfilter *pf)
{
	if (pf->devices)
		dm_hash_destroy(pf->devices);

	if (!(pf->devices = dm_hash_create(128))) {
		stack;
		return 0;
	}

	return 1;
}
Beispiel #5
0
static int _init_cluster(void)
{
	int r;

	if (!(_locks = dm_hash_create(128))) {
		DEBUGLOG("Failed to allocate single-node hash table.\n");
		return 1;
	}

	r = init_comms();
	if (r) {
		dm_hash_destroy(_locks);
		return r;
	}

	DEBUGLOG("Single-node cluster initialised.\n");
	return 0;
}
/* Called by init_cluster() to open up the listening socket */
int init_comms(unsigned short port)
{
    struct sockaddr_in6 addr;

    sock_hash = dm_hash_create(100);
    tcp_port = port ? : DEFAULT_TCP_PORT;

    listen_fd = socket(AF_INET6, SOCK_STREAM, 0);

    if (listen_fd < 0)
    {
	return -1;
    }
    else
    {
	int one = 1;
	setsockopt(listen_fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(int));
	setsockopt(listen_fd, SOL_SOCKET, SO_KEEPALIVE, &one, sizeof(int));
    }

    memset(&addr, 0, sizeof(addr)); // Bind to INADDR_ANY
    addr.sin6_family = AF_INET6;
    addr.sin6_port = htons(tcp_port);

    if (bind(listen_fd, (struct sockaddr *)&addr, sizeof(addr)) < 0)
    {
	DEBUGLOG("Can't bind to port: %s\n", strerror(errno));
	syslog(LOG_ERR, "Can't bind to port %d, is clvmd already running ?", tcp_port);
	close(listen_fd);
	return -1;
    }

    listen(listen_fd, 5);

    /* Set Close-on-exec */
    fcntl(listen_fd, F_SETFD, 1);

    return 0;
}
static int _init_cluster(void)
{
	cs_error_t err;

#ifdef QUORUM_SET	/* corosync/quorum.h */
	uint32_t quorum_type;
#endif

	node_hash = dm_hash_create(100);

	err = cpg_initialize(&cpg_handle,
			     &corosync_cpg_callbacks);
	if (err != CS_OK) {
		syslog(LOG_ERR, "Cannot initialise Corosync CPG service: %d",
		       err);
		DEBUGLOG("Cannot initialise Corosync CPG service: %d", err);
		return cs_to_errno(err);
	}

#ifdef QUORUM_SET
	err = quorum_initialize(&quorum_handle,
				&quorum_callbacks,
				&quorum_type);

	if (quorum_type != QUORUM_SET) {
		syslog(LOG_ERR, "Corosync quorum service is not configured");
		DEBUGLOG("Corosync quorum service is not configured");
		return EINVAL;
	}
#else
	err = quorum_initialize(&quorum_handle,
				&quorum_callbacks);
#endif

	if (err != CS_OK) {
		syslog(LOG_ERR, "Cannot initialise Corosync quorum service: %d",
		       err);
		DEBUGLOG("Cannot initialise Corosync quorum service: %d", err);
		return cs_to_errno(err);
	}

	/* Create a lockspace for LV & VG locks to live in */
	lockspace = dlm_open_lockspace(LOCKSPACE_NAME);
	if (!lockspace) {
		lockspace = dlm_create_lockspace(LOCKSPACE_NAME, 0600);
		if (!lockspace) {
			syslog(LOG_ERR, "Unable to create DLM lockspace for CLVM: %m");
			return -1;
		}
		DEBUGLOG("Created DLM lockspace for CLVMD.\n");
	} else
		DEBUGLOG("Opened existing DLM lockspace for CLVMD.\n");

	dlm_ls_pthread_init(lockspace);
	DEBUGLOG("DLM initialisation complete\n");

	/* Connect to the clvmd group */
	strcpy((char *)cpg_group_name.value, "clvmd");
	cpg_group_name.length = strlen((char *)cpg_group_name.value);
	err = cpg_join(cpg_handle, &cpg_group_name);
	if (err != CS_OK) {
		cpg_finalize(cpg_handle);
		quorum_finalize(quorum_handle);
		dlm_release_lockspace(LOCKSPACE_NAME, lockspace, 1);
		syslog(LOG_ERR, "Cannot join clvmd process group");
		DEBUGLOG("Cannot join clvmd process group: %d\n", err);
		return cs_to_errno(err);
	}

	err = cpg_local_get(cpg_handle,
			    &our_nodeid);
	if (err != CS_OK) {
		cpg_finalize(cpg_handle);
		quorum_finalize(quorum_handle);
		dlm_release_lockspace(LOCKSPACE_NAME, lockspace, 1);
		syslog(LOG_ERR, "Cannot get local node id\n");
		return cs_to_errno(err);
	}
	DEBUGLOG("Our local node id is %d\n", our_nodeid);

	DEBUGLOG("Connected to Corosync\n");

	return 0;
}
Beispiel #8
0
void print_log(int level, const char *file, int line, int dm_errno_or_class,
	       const char *format, ...)
{
	va_list ap;
	char buf[1024], message[4096];
	int bufused, n;
	const char *trformat;		/* Translated format string */
	char *newbuf;
	int use_stderr = level & _LOG_STDERR;
	int log_once = level & _LOG_ONCE;
	int fatal_internal_error = 0;
	size_t msglen;
	const char *indent_spaces = "";
	FILE *stream;
	static int _abort_on_internal_errors_env_present = -1;
	static int _abort_on_internal_errors_env = 0;
	char *env_str;

	level &= ~(_LOG_STDERR|_LOG_ONCE);

	if (_abort_on_internal_errors_env_present < 0) {
		if ((env_str = getenv("DM_ABORT_ON_INTERNAL_ERRORS"))) {
			_abort_on_internal_errors_env_present = 1;
			/* Set when env DM_ABORT_ON_INTERNAL_ERRORS is not "0" */
			_abort_on_internal_errors_env = strcmp(env_str, "0");
		} else
			_abort_on_internal_errors_env_present = 0;
	}

	/* Use value from environment if present, otherwise use value from config. */
	if (((_abort_on_internal_errors_env_present && _abort_on_internal_errors_env) ||
	     (!_abort_on_internal_errors_env_present && _abort_on_internal_errors_config)) &&
	    !strncmp(format, INTERNAL_ERROR, sizeof(INTERNAL_ERROR) - 1)) {
		fatal_internal_error = 1;
		/* Internal errors triggering abort cannot be suppressed. */
		_log_suppress = 0;
		level = _LOG_FATAL;
	}

	if (level <= _LOG_ERR)
		init_error_message_produced(1);

	trformat = _(format);

	if (level < _LOG_DEBUG && dm_errno_or_class && !_lvm_errno)
		_lvm_errno = dm_errno_or_class;

	if (_lvm2_log_fn ||
	    (_store_errmsg && (level <= _LOG_ERR)) ||
	    log_once) {
		va_start(ap, format);
		n = vsnprintf(message, sizeof(message), trformat, ap);
		va_end(ap);

		/* When newer glibc returns >= sizeof(locn), we will just log what
                 * has fit into buffer, it's '\0' terminated string */
		if (n < 0) {
			fprintf(stderr, _("vsnprintf failed: skipping external "
					"logging function"));
			goto log_it;
		}
	}

/* FIXME Avoid pointless use of message buffer when it'll never be read! */
	if (_store_errmsg && (level <= _LOG_ERR) &&
	    _lvm_errmsg_len < MAX_ERRMSG_LEN) {
		msglen = strlen(message);
		if ((_lvm_errmsg_len + msglen + 1) >= _lvm_errmsg_size) {
			_lvm_errmsg_size = 2 * (_lvm_errmsg_len + msglen + 1);
			if ((newbuf = dm_realloc(_lvm_errmsg,
						 _lvm_errmsg_size)))
				_lvm_errmsg = newbuf;
			else
				_lvm_errmsg_size = _lvm_errmsg_len;
		}
		if (_lvm_errmsg &&
		    (_lvm_errmsg_len + msglen + 2) < _lvm_errmsg_size) {
			/* prepend '\n' and copy with '\0' but do not count in */
                        if (_lvm_errmsg_len)
				_lvm_errmsg[_lvm_errmsg_len++] = '\n';
			memcpy(_lvm_errmsg + _lvm_errmsg_len, message, msglen + 1);
			_lvm_errmsg_len += msglen;
		}
	}

	if (log_once) {
		if (!_duplicated)
			_duplicated = dm_hash_create(128);
		if (_duplicated) {
			if (dm_hash_lookup(_duplicated, message))
				level = _LOG_NOTICE;
			else
				(void) dm_hash_insert(_duplicated, message, (void*)1);
		}
	}

	if (_lvm2_log_fn) {
		_lvm2_log_fn(level, file, line, 0, message);
		if (fatal_internal_error)
			abort();
		return;
	}

      log_it:
	if ((verbose_level() >= level) && !_log_suppress) {
		if (verbose_level() > _LOG_DEBUG) {
			(void) dm_snprintf(buf, sizeof(buf), "#%s:%d ",
					   file, line);
		} else
			buf[0] = '\0';

		if (_indent)
			switch (level) {
			case _LOG_NOTICE: indent_spaces = "  "; break;
			case _LOG_INFO:   indent_spaces = "    "; break;
			case _LOG_DEBUG:  indent_spaces = "      "; break;
			default: /* nothing to do */;
			}

		va_start(ap, format);
		switch (level) {
		case _LOG_DEBUG:
			if (verbose_level() < _LOG_DEBUG)
				break;
			if (!debug_class_is_logged(dm_errno_or_class))
				break;
			if ((verbose_level() == level) &&
			    (strcmp("<backtrace>", format) == 0))
				break;
			/* fall through */
		default:
			/* Typically only log_warn goes to stdout */
			stream = (use_stderr || (level != _LOG_WARN)) ? stderr : stdout;
			if (stream == stderr)
				fflush(stdout);
			fprintf(stream, "%s%s%s%s", buf, log_command_name(),
				_msg_prefix, indent_spaces);
			vfprintf(stream, trformat, ap);
			fputc('\n', stream);
		}
		va_end(ap);
	}

	if ((level > debug_level()) ||
	    (level >= _LOG_DEBUG && !debug_class_is_logged(dm_errno_or_class))) {
		if (fatal_internal_error)
			abort();
		return;
	}

	if (_log_to_file && (_log_while_suspended || !critical_section())) {
		fprintf(_log_file, "%s:%d %s%s", file, line, log_command_name(),
			_msg_prefix);

		va_start(ap, format);
		vfprintf(_log_file, trformat, ap);
		va_end(ap);

		fputc('\n', _log_file);
		fflush(_log_file);
	}

	if (_syslog && (_log_while_suspended || !critical_section())) {
		va_start(ap, format);
		vsyslog(level, trformat, ap);
		va_end(ap);
	}

	if (fatal_internal_error)
		abort();

	/* FIXME This code is unfinished - pre-extend & condense. */
	if (!_already_logging && _log_direct && critical_section()) {
		_already_logging = 1;
		memset(&buf, ' ', sizeof(buf));
		bufused = 0;
		if ((n = dm_snprintf(buf, sizeof(buf),
				      "%s:%d %s%s", file, line, log_command_name(),
				      _msg_prefix)) == -1)
			goto done;

		bufused += n;		/* n does not include '\0' */

		va_start(ap, format);
		n = vsnprintf(buf + bufused, sizeof(buf) - bufused,
			      trformat, ap);
		va_end(ap);

		if (n < 0)
			goto done;

		bufused += n;
		if (n >= sizeof(buf))
			bufused = sizeof(buf) - 1;
	      done:
		buf[bufused] = '\n';
		buf[sizeof(buf) - 1] = '\n';
		/* FIXME real size bufused */
		dev_append(&_log_dev, sizeof(buf), buf);
		_already_logging = 0;
	}
}
Beispiel #9
0
void print_log(int level, const char *file, int line, int dm_errno,
	       const char *format, ...)
{
	va_list ap;
	char buf[1024], locn[4096];
	int bufused, n;
	const char *message;
	const char *trformat;		/* Translated format string */
	char *newbuf;
	int use_stderr = level & _LOG_STDERR;
	int log_once = level & _LOG_ONCE;
	int fatal_internal_error = 0;
	size_t msglen;

	level &= ~(_LOG_STDERR|_LOG_ONCE);

	if (_abort_on_internal_errors &&
	    !strncmp(format, INTERNAL_ERROR,
		     strlen(INTERNAL_ERROR))) {
		fatal_internal_error = 1;
		/* Internal errors triggering abort cannot be suppressed. */
		_log_suppress = 0;
		level = _LOG_FATAL;
	}

	if (_log_suppress == 2)
		return;

	if (level <= _LOG_ERR)
		init_error_message_produced(1);

	trformat = _(format);

	if (dm_errno && !_lvm_errno)
		_lvm_errno = dm_errno;

	if (_lvm2_log_fn ||
	    (_store_errmsg && (level <= _LOG_ERR)) ||
	    log_once) {
		va_start(ap, format);
		n = vsnprintf(locn, sizeof(locn) - 1, trformat, ap);
		va_end(ap);

		if (n < 0) {
			fprintf(stderr, _("vsnprintf failed: skipping external "
					"logging function"));
			goto log_it;
		}

		locn[sizeof(locn) - 1] = '\0';
		message = locn;
	}

/* FIXME Avoid pointless use of message buffer when it'll never be read! */
	if (_store_errmsg && (level <= _LOG_ERR) &&
	    _lvm_errmsg_len < MAX_ERRMSG_LEN) {
		msglen = strlen(message);
		if ((_lvm_errmsg_len + msglen + 1) >= _lvm_errmsg_size) {
			_lvm_errmsg_size = 2 * (_lvm_errmsg_len + msglen + 1);
			if ((newbuf = dm_realloc(_lvm_errmsg,
						 _lvm_errmsg_size)))
				_lvm_errmsg = newbuf;
			else
				_lvm_errmsg_size = _lvm_errmsg_len;
		}
		if (_lvm_errmsg &&
		    (_lvm_errmsg_len + msglen + 2) < _lvm_errmsg_size) {
			/* prepend '\n' and copy with '\0' but do not count in */
                        if (_lvm_errmsg_len)
				_lvm_errmsg[_lvm_errmsg_len++] = '\n';
			memcpy(_lvm_errmsg + _lvm_errmsg_len, message, msglen + 1);
			_lvm_errmsg_len += msglen;
		}
	}

	if (log_once) {
		if (!_duplicated)
			_duplicated = dm_hash_create(128);
		if (_duplicated) {
			if (dm_hash_lookup(_duplicated, message))
				level = _LOG_NOTICE;
			(void) dm_hash_insert(_duplicated, message, (void*)1);
		}
	}

	if (_lvm2_log_fn) {
		_lvm2_log_fn(level, file, line, 0, message);
		if (fatal_internal_error)
			abort();
		return;
	}

      log_it:
	if (!_log_suppress) {
		if (verbose_level() > _LOG_DEBUG)
			(void) dm_snprintf(locn, sizeof(locn), "#%s:%d ",
					   file, line);
		else
			locn[0] = '\0';

		va_start(ap, format);
		switch (level) {
		case _LOG_DEBUG:
			if (!strcmp("<backtrace>", format) &&
			    verbose_level() <= _LOG_DEBUG)
				break;
			if (verbose_level() >= _LOG_DEBUG) {
				fprintf(stderr, "%s%s%s", locn, log_command_name(),
					_msg_prefix);
				if (_indent)
					fprintf(stderr, "      ");
				vfprintf(stderr, trformat, ap);
				fputc('\n', stderr);
			}
			break;

		case _LOG_INFO:
			if (verbose_level() >= _LOG_INFO) {
				fprintf(stderr, "%s%s%s", locn, log_command_name(),
					_msg_prefix);
				if (_indent)
					fprintf(stderr, "    ");
				vfprintf(stderr, trformat, ap);
				fputc('\n', stderr);
			}
			break;
		case _LOG_NOTICE:
			if (verbose_level() >= _LOG_NOTICE) {
				fprintf(stderr, "%s%s%s", locn, log_command_name(),
					_msg_prefix);
				if (_indent)
					fprintf(stderr, "  ");
				vfprintf(stderr, trformat, ap);
				fputc('\n', stderr);
			}
			break;
		case _LOG_WARN:
			if (verbose_level() >= _LOG_WARN) {
				fprintf(use_stderr ? stderr : stdout, "%s%s",
					log_command_name(), _msg_prefix);
				vfprintf(use_stderr ? stderr : stdout, trformat, ap);
				fputc('\n', use_stderr ? stderr : stdout);
			}
			break;
		case _LOG_ERR:
			if (verbose_level() >= _LOG_ERR) {
				fprintf(stderr, "%s%s%s", locn, log_command_name(),
					_msg_prefix);
				vfprintf(stderr, trformat, ap);
				fputc('\n', stderr);
			}
			break;
		case _LOG_FATAL:
		default:
			if (verbose_level() >= _LOG_FATAL) {
				fprintf(stderr, "%s%s%s", locn, log_command_name(),
					_msg_prefix);
				vfprintf(stderr, trformat, ap);
				fputc('\n', stderr);
			}
			break;
		}
		va_end(ap);
	}

	if (level > debug_level())
		return;

	if (_log_to_file && (_log_while_suspended || !critical_section())) {
		fprintf(_log_file, "%s:%d %s%s", file, line, log_command_name(),
			_msg_prefix);

		va_start(ap, format);
		vfprintf(_log_file, trformat, ap);
		va_end(ap);

		fprintf(_log_file, "\n");
		fflush(_log_file);
	}

	if (_syslog && (_log_while_suspended || !critical_section())) {
		va_start(ap, format);
		vsyslog(level, trformat, ap);
		va_end(ap);
	}

	if (fatal_internal_error)
		abort();

	/* FIXME This code is unfinished - pre-extend & condense. */
	if (!_already_logging && _log_direct && critical_section()) {
		_already_logging = 1;
		memset(&buf, ' ', sizeof(buf));
		bufused = 0;
		if ((n = dm_snprintf(buf, sizeof(buf) - 1,
				      "%s:%d %s%s", file, line, log_command_name(),
				      _msg_prefix)) == -1)
			goto done;

		bufused += n;

		va_start(ap, format);
		n = vsnprintf(buf + bufused - 1, sizeof(buf) - bufused - 1,
			      trformat, ap);
		va_end(ap);
		bufused += n;

		buf[bufused - 1] = '\n';
	      done:
		buf[bufused] = '\n';
		buf[sizeof(buf) - 1] = '\n';
		/* FIXME real size bufused */
		dev_append(&_log_dev, sizeof(buf), buf);
		_already_logging = 0;
	}
}
Beispiel #10
0
static int _init_cluster(void)
{
	cs_error_t err;

	node_hash = dm_hash_create(100);

	err = cpg_initialize(&cpg_handle,
			     &corosync_cpg_callbacks);
	if (err != CS_OK) {
		syslog(LOG_ERR, "Cannot initialise Corosync CPG service: %d",
		       err);
		DEBUGLOG("Cannot initialise Corosync CPG service: %d", err);
		return cs_to_errno(err);
	}

	err = quorum_initialize(&quorum_handle,
				&quorum_callbacks);
	if (err != CS_OK) {
		syslog(LOG_ERR, "Cannot initialise Corosync quorum service: %d",
		       err);
		DEBUGLOG("Cannot initialise Corosync quorum service: %d", err);
		return cs_to_errno(err);
	}


	/* Create a lockspace for LV & VG locks to live in */
	lockspace = dlm_create_lockspace(LOCKSPACE_NAME, 0600);
	if (!lockspace) {
		if (errno == EEXIST) {
			lockspace = dlm_open_lockspace(LOCKSPACE_NAME);
		}
		if (!lockspace) {
			syslog(LOG_ERR, "Unable to create lockspace for CLVM: %m");
			quorum_finalize(quorum_handle);
			return -1;
		}
	}
	dlm_ls_pthread_init(lockspace);
	DEBUGLOG("DLM initialisation complete\n");

	/* Connect to the clvmd group */
	strcpy((char *)cpg_group_name.value, "clvmd");
	cpg_group_name.length = strlen((char *)cpg_group_name.value);
	err = cpg_join(cpg_handle, &cpg_group_name);
	if (err != CS_OK) {
		cpg_finalize(cpg_handle);
		quorum_finalize(quorum_handle);
		dlm_release_lockspace(LOCKSPACE_NAME, lockspace, 1);
		syslog(LOG_ERR, "Cannot join clvmd process group");
		DEBUGLOG("Cannot join clvmd process group: %d\n", err);
		return cs_to_errno(err);
	}

	err = cpg_local_get(cpg_handle,
			    &our_nodeid);
	if (err != CS_OK) {
		cpg_finalize(cpg_handle);
		quorum_finalize(quorum_handle);
		dlm_release_lockspace(LOCKSPACE_NAME, lockspace, 1);
		syslog(LOG_ERR, "Cannot get local node id\n");
		return cs_to_errno(err);
	}
	DEBUGLOG("Our local node id is %d\n", our_nodeid);

	DEBUGLOG("Connected to Corosync\n");

	return 0;
}
Beispiel #11
0
int config_def_check(struct cmd_context *cmd, struct cft_check_handle *handle)
{
	cfg_def_item_t *def;
	struct dm_config_node *cn;
	char *vp = _cfg_path, rp[CFG_PATH_MAX_LEN];
	size_t rplen;
	int id, r = 1;

	/*
	 * vp = virtual path, it might contain substitutes for variable parts
	 * 	of the path, used while working with the hash
	 * rp = real path, the real path of the config element as found in the
	 *      configuration, used for message output
	 */

	/*
	 * If the check has already been done and 'skip_if_checked' is set,
	 * skip the actual check and use last result if available.
	 * If not available, we must do the check. The global status
	 * is stored in root node.
	 */
	if (handle->skip_if_checked && (handle->status[root_CFG_SECTION] & CFG_USED))
		return handle->status[root_CFG_SECTION] & CFG_VALID;

	/* Nothing to do if checks are disabled and also not forced. */
	if (!handle->force_check && !find_config_tree_bool(cmd, config_checks_CFG, NULL))
		return 1;

	/* Clear 'used' and 'valid' status flags. */
	for (id = 0; id < CFG_COUNT; id++)
		handle->status[id] &= ~(CFG_USED | CFG_VALID);

	/*
	 * Create a hash of all possible configuration
	 * sections and settings with full path as a key.
	 * If section name is variable, use '#' as a substitute.
	 */
	if (!cmd->cft_def_hash) {
		if (!(cmd->cft_def_hash = dm_hash_create(64))) {
			log_error("Failed to create configuration definition hash.");
			r = 0; goto out;
		}
		for (id = 1; id < CFG_COUNT; id++) {
			def = cfg_def_get_item_p(id);
			if (!cfg_def_get_path(def)) {
				dm_hash_destroy(cmd->cft_def_hash);
				cmd->cft_def_hash = NULL;
				r = 0; goto out;
			}
			if (!dm_hash_insert(cmd->cft_def_hash, vp, def)) {
				log_error("Failed to insert configuration to hash.");
				r = 0;
				goto out;
			}
		}
	}

	/*
	 * Mark this handle as used so next time we know that the check
	 * has already been done and so we can just reuse the previous
	 * status instead of running this whole check again.
	 */
	handle->status[root_CFG_SECTION] |= CFG_USED;

	/*
	 * Allow only sections as top-level elements.
	 * Iterate top-level sections and dive deeper.
	 * If any of subsequent checks fails, the whole check fails.
	 */
	for (cn = handle->cft->root; cn; cn = cn->sib) {
		if (!cn->v) {
			/* top level node: vp=vp, rp=rp */
			if (!_config_def_check_node(handle, vp, vp, rp, rp,
						    CFG_PATH_MAX_LEN,
						    cn, cmd->cft_def_hash)) {
				r = 0; continue;
			}
			rplen = strlen(rp);
			if (!_config_def_check_tree(handle,
						    vp, vp + strlen(vp),
						    rp, rp + rplen,
						    CFG_PATH_MAX_LEN - rplen,
						    cn, cmd->cft_def_hash))
				r = 0;
		} else {
			log_error_suppress(handle->suppress_messages,
				"Configuration setting \"%s\" invalid. "
				"It's not part of any section.", cn->key);
			r = 0;
		}
	}
out:
	if (r)
		handle->status[root_CFG_SECTION] |= CFG_VALID;
	else
		handle->status[root_CFG_SECTION] &= ~CFG_VALID;

	return r;
}