/*

 * Soft:        Keepalived is a failover program for the LVS project

 *              <www.linuxvirtualserver.org>. It monitor & manipulate

 *              a loadbalanced server pool using multi-layer checks.

 *

 * Part:        Dynamic data structure definition.

 *

 * Author:      Alexandre Cassen, <acassen@linux-vs.org>

 *

 *              This program 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.

 *

 *              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.

 *

 * Copyright (C) 2001-2017 Alexandre Cassen, <acassen@gmail.com>

 */

#include "config.h"

#include <unistd.h>

#include <pwd.h>

#include "global_data.h"

#include "list.h"

#include "logger.h"

#include "parser.h"

#include "utils.h"

#include "main.h"

#include "memory.h"

#ifdef _WITH_VRRP_

#include "vrrp.h"

#include "vrrp_ipaddress.h"

#endif

#if HAVE_DECL_RLIMIT_RTTIME == 1

#include "process.h"

#endif

/* global vars */

data_t *global_data = NULL;

data_t *old_global_data = NULL;

/* Default settings */

static void

set_default_router_id(data_t *data, char *new_id)

{

	if (!new_id || !new_id[0])

		return;

	data->router_id = MALLOC(strlen(new_id)+1);

	strcpy(data->router_id, new_id);

}

static void

set_default_email_from(data_t * data, const char *hostname)

{

	struct passwd *pwd = NULL;

	size_t len;

	if (!hostname || !hostname[0])

		return;

	pwd = getpwuid(getuid());

	if (!pwd)

		return;

	len = strlen(hostname) + strlen(pwd->pw_name) + 2;

	data->email_from = MALLOC(len);

	if (!data->email_from)

		return;

	snprintf(data->email_from, len, "%s@%s", pwd->pw_name, hostname);

}

static void

set_default_smtp_connection_timeout(data_t * data)

{

	data->smtp_connection_to = DEFAULT_SMTP_CONNECTION_TIMEOUT;

}

#ifdef _WITH_VRRP_

static void

set_default_mcast_group(data_t * data)

{

	inet_stosockaddr(INADDR_VRRP_GROUP, 0, (struct sockaddr_storage *)&data->vrrp_mcast_group4);

	inet_stosockaddr(INADDR6_VRRP_GROUP, 0, (struct sockaddr_storage *)&data->vrrp_mcast_group6);

}

static void

set_vrrp_defaults(data_t * data)

{

	data->vrrp_garp_rep = VRRP_GARP_REP;

	data->vrrp_garp_refresh.tv_sec = VRRP_GARP_REFRESH;

	data->vrrp_garp_refresh_rep = VRRP_GARP_REFRESH_REP;

	data->vrrp_garp_delay = VRRP_GARP_DELAY;

	data->vrrp_garp_lower_prio_delay = PARAMETER_UNSET;

	data->vrrp_garp_lower_prio_rep = PARAMETER_UNSET;

	data->vrrp_lower_prio_no_advert = false;

	data->vrrp_higher_prio_send_advert = false;

	data->vrrp_version = VRRP_VERSION_2;

	strcpy(data->vrrp_iptables_inchain, "INPUT");

#ifdef _HAVE_LIBIPSET_

	data->using_ipsets = true;

	strcpy(data->vrrp_ipset_address, "keepalived");

	strcpy(data->vrrp_ipset_address6, "keepalived6");

	strcpy(data->vrrp_ipset_address_iface6, "keepalived_if6");

#endif

	data->vrrp_check_unicast_src = false;

	data->vrrp_skip_check_adv_addr = false;

	data->vrrp_strict = false;

}

#endif

/* email facility functions */

static void

free_email(void *data)

{

	FREE(data);

}

static void

dump_email(FILE *fp, void *data)

{

	char *addr = data;

	conf_write(fp, " Email notification = %s", addr);

}

void

alloc_email(char *addr)

{

	size_t size = strlen(addr);

	char *new;

	new = (char *) MALLOC(size + 1);

	memcpy(new, addr, size + 1);

	list_add(global_data->email, new);

}

/* data facility functions */

data_t *

alloc_global_data(void)

{

	data_t *new;

	if (global_data)

		return global_data;

	new = (data_t *) MALLOC(sizeof(data_t));

	new->email = alloc_list(free_email, dump_email);

	new->smtp_alert = -1;

#ifdef _WITH_VRRP_

	new->smtp_alert_vrrp = -1;

#endif

#ifdef _WITH_LVS_

	new->smtp_alert_checker = -1;

#endif

#ifdef _WITH_VRRP_

	set_default_mcast_group(new);

	set_vrrp_defaults(new);

#endif

	new->notify_fifo.fd = -1;

#ifdef _WITH_VRRP_

	new->vrrp_notify_fifo.fd = -1;

#if HAVE_DECL_RLIMIT_RTTIME == 1

	new->vrrp_rlimit_rt = RT_RLIMIT_DEFAULT;

#endif

	new->vrrp_rx_bufs_multiples = 3;

#endif

#ifdef _WITH_LVS_

	new->lvs_notify_fifo.fd = -1;

#if HAVE_DECL_RLIMIT_RTTIME == 1

	new->checker_rlimit_rt = RT_RLIMIT_DEFAULT;

#endif

#ifdef _WITH_BFD_

#if HAVE_DECL_RLIMIT_RTTIME == 1

	new->bfd_rlimit_rt = RT_RLIMIT_DEFAULT;

#endif

#endif

#endif

#ifdef _WITH_SNMP_

	if (snmp) {

#ifdef _WITH_SNMP_VRRP_

		new->enable_snmp_vrrp = true;

#endif

#ifdef _WITH_SNMP_RFCV2_

		new->enable_snmp_rfcv2 = true;

#endif

#ifdef _WITH_SNMP_RFCV3_

		new->enable_snmp_rfcv3 = true;

#endif

#ifdef _WITH_SNMP_CHECKER_

		new->enable_snmp_checker = true;

#endif

	}

	if (snmp_socket) {

		new->snmp_socket = MALLOC(strlen(snmp_socket + 1));

		strcpy(new->snmp_socket, snmp_socket);

	}

#endif

#ifdef _WITH_LVS_

#ifdef _WITH_VRRP_

	new->lvs_syncd.syncid = PARAMETER_UNSET;

#ifdef _HAVE_IPVS_SYNCD_ATTRIBUTES_

	new->lvs_syncd.mcast_group.ss_family = AF_UNSPEC;

#endif

#endif

#endif

	return new;

}

void

init_global_data(data_t * data, data_t *old_global_data)

{

	/* If this is a reload and we are running in a network namespace,

	 * we may not be able to get local_name, so preserve it */

	char unknown_name[] = "[unknown]";

	/* If we are running in a network namespace, we may not be

	 * able to get our local name now, so re-use original */

	if (old_global_data) {

		data->local_name = old_global_data->local_name;

		old_global_data->local_name = NULL;

	}

	if (!data->local_name &&

	    (!data->router_id ||

	     (data->smtp_server.ss_family &&

	      (!data->smtp_helo_name ||

	       !data->email_from)))) {

		data->local_name = get_local_name();

		/* If for some reason get_local_name() fails, we need to have

		 * some string in local_name, otherwise keepalived can segfault */

		if (!data->local_name) {

			data->local_name = MALLOC(sizeof(unknown_name));

			strcpy(data->local_name, unknown_name);

		}

	}

	if (!data->router_id)

		set_default_router_id(data, data->local_name);

	if (data->smtp_server.ss_family) {

		if (!data->smtp_connection_to)

			set_default_smtp_connection_timeout(data);

		if (data->local_name && strcmp(data->local_name, unknown_name)) {

			if (!data->email_from)

				set_default_email_from(data, data->local_name);

			if (!data->smtp_helo_name) {

				data->smtp_helo_name = MALLOC(strlen(data->local_name) + 1);

				strcpy(data->smtp_helo_name, data->local_name);

			}

		}

	}

	/* Check that there aren't conflicts with the notify FIFOs */

#ifdef _WITH_VRRP_

	/* If the global and vrrp notify FIFOs are the same, then data will be

	 * duplicated on the FIFO */

	if (

#ifndef _DEBUG_

	    prog_type == PROG_TYPE_VRRP &&

#endif

	    data->notify_fifo.name && data->vrrp_notify_fifo.name &&

	    !strcmp(data->notify_fifo.name, data->vrrp_notify_fifo.name)) {

		log_message(LOG_INFO, "notify FIFO %s has been specified for global and vrrp FIFO - ignoring vrrp FIFO", data->vrrp_notify_fifo.name);

		FREE_PTR(data->vrrp_notify_fifo.name);

		data->vrrp_notify_fifo.name = NULL;

		free_notify_script(&data->vrrp_notify_fifo.script);

	}

#endif

#ifdef _WITH_LVS_

	/* If the global and LVS notify FIFOs are the same, then data will be

	 * duplicated on the FIFO */

#ifndef _DEBUG_

	if (prog_type == PROG_TYPE_CHECKER)

#endif

	{

		if (data->notify_fifo.name && data->lvs_notify_fifo.name &&

		    !strcmp(data->notify_fifo.name, data->lvs_notify_fifo.name)) {

			log_message(LOG_INFO, "notify FIFO %s has been specified for global and LVS FIFO - ignoring LVS FIFO", data->lvs_notify_fifo.name);

			FREE_PTR(data->lvs_notify_fifo.name);

			data->lvs_notify_fifo.name = NULL;

			free_notify_script(&data->lvs_notify_fifo.script);

		}

#ifdef _WITH_VRRP_

		/* If LVS and VRRP use the same FIFO, they cannot both have a script for the FIFO.

		 * Use the VRRP script and ignore the LVS script */

		if (data->lvs_notify_fifo.name && data->vrrp_notify_fifo.name &&

		    !strcmp(data->lvs_notify_fifo.name, data->vrrp_notify_fifo.name) &&

		    data->lvs_notify_fifo.script &&

		    data->vrrp_notify_fifo.script) {

			log_message(LOG_INFO, "LVS notify FIFO and vrrp FIFO are the same both with scripts - ignoring LVS FIFO script");

			free_notify_script(&data->lvs_notify_fifo.script);

		}

#endif

	}

#endif

}

void

free_global_data(data_t * data)

{

	if (!data)

		return;

	free_list(&data->email);

#if HAVE_DECL_CLONE_NEWNET

	FREE_PTR(data->network_namespace);

#endif

	FREE_PTR(data->instance_name);

	FREE_PTR(data->router_id);

	FREE_PTR(data->email_from);

	FREE_PTR(data->smtp_helo_name);

	FREE_PTR(data->local_name);

#ifdef _WITH_SNMP_

	FREE_PTR(data->snmp_socket);

#endif

#if defined _WITH_LVS_ && defined _WITH_VRRP_

	FREE_PTR(data->lvs_syncd.ifname);

	FREE_PTR(data->lvs_syncd.vrrp_name);

#endif

	FREE_PTR(data->notify_fifo.name);

	free_notify_script(&data->notify_fifo.script);

#ifdef _WITH_VRRP_

	FREE_PTR(data->default_ifname);

	FREE_PTR(data->vrrp_notify_fifo.name);

	free_notify_script(&data->vrrp_notify_fifo.script);

#endif

#ifdef _WITH_LVS_

	FREE_PTR(data->lvs_notify_fifo.name);

	free_notify_script(&data->lvs_notify_fifo.script);

#endif

	FREE(data);

}

void

dump_global_data(FILE *fp, data_t * data)

{

#ifdef _WITH_VRRP_

	char buf[64];

#endif

	if (!data)

		return;

	conf_write(fp, "------< Global definitions >------");

#if HAVE_DECL_CLONE_NEWNET

	conf_write(fp, " Network namespace = %s", data->network_namespace ? data->network_namespace : "(default)");

#endif

	if (data->instance_name)

		conf_write(fp, " Instance name = %s", data->instance_name);

	if (data->router_id)

		conf_write(fp, " Router ID = %s", data->router_id);

	if (data->smtp_server.ss_family) {

		conf_write(fp, " Smtp server = %s", inet_sockaddrtos(&data->smtp_server));

		conf_write(fp, " Smtp server port = %u", ntohs(inet_sockaddrport(&data->smtp_server)));

	}

	if (data->smtp_helo_name)

		conf_write(fp, " Smtp HELO name = %s" , data->smtp_helo_name);

	if (data->smtp_connection_to)

		conf_write(fp, " Smtp server connection timeout = %lu"

				    , data->smtp_connection_to / TIMER_HZ);

	if (data->email_from) {

		conf_write(fp, " Email notification from = %s"

				    , data->email_from);

		dump_list(fp, data->email);

	}

	conf_write(fp, " Default smtp_alert = %s",

			data->smtp_alert == -1 ? "unset" : data->smtp_alert ? "on" : "off");

#ifdef _WITH_VRRP_

	conf_write(fp, " Default smtp_alert_vrrp = %s",

			data->smtp_alert_vrrp == -1 ? "unset" : data->smtp_alert_vrrp ? "on" : "off");

#endif

#ifdef _WITH_LVS_

	conf_write(fp, " Default smtp_alert_checker = %s",

			data->smtp_alert_checker == -1 ? "unset" : data->smtp_alert_checker ? "on" : "off");

#endif

#ifdef _WITH_VRRP_

	conf_write(fp, " Dynamic interfaces = %s", data->dynamic_interfaces ? "true" : "false");

	if (data->dynamic_interfaces)

		conf_write(fp, " Allow interface changes = %s", data->allow_if_changes ? "true" : "false");

	if (data->no_email_faults)

		conf_write(fp, " Send emails for fault transitions = off");

#endif

#ifdef _WITH_LVS_

	if (data->lvs_tcp_timeout)

		conf_write(fp, " LVS TCP timeout = %d", data->lvs_tcp_timeout);

	if (data->lvs_tcpfin_timeout)

		conf_write(fp, " LVS TCP FIN timeout = %d", data->lvs_tcpfin_timeout);

	if (data->lvs_udp_timeout)

		conf_write(fp, " LVS TCP timeout = %d", data->lvs_udp_timeout);

#ifdef _WITH_VRRP_

#ifndef _DEBUG_

	if (prog_type == PROG_TYPE_VRRP)

#endif

		conf_write(fp, " Default interface = %s", data->default_ifp ? data->default_ifp->ifname : DFLT_INT);

	if (data->lvs_syncd.vrrp) {

		conf_write(fp, " LVS syncd vrrp instance = %s"

				    , data->lvs_syncd.vrrp->iname);

		if (data->lvs_syncd.ifname)

			conf_write(fp, " LVS syncd interface = %s"

				    , data->lvs_syncd.ifname);

		conf_write(fp, " LVS syncd syncid = %u"

				    , data->lvs_syncd.syncid);

#ifdef _HAVE_IPVS_SYNCD_ATTRIBUTES_

		if (data->lvs_syncd.sync_maxlen)

			conf_write(fp, " LVS syncd maxlen = %u", data->lvs_syncd.sync_maxlen);

		if (data->lvs_syncd.mcast_group.ss_family != AF_UNSPEC)

			conf_write(fp, " LVS mcast group %s", inet_sockaddrtos(&data->lvs_syncd.mcast_group));

		if (data->lvs_syncd.mcast_port)

			conf_write(fp, " LVS syncd mcast port = %d", data->lvs_syncd.mcast_port);

		if (data->lvs_syncd.mcast_ttl)

			conf_write(fp, " LVS syncd mcast ttl = %u", data->lvs_syncd.mcast_ttl);

#endif

	}

#endif

	conf_write(fp, " LVS flush = %s", data->lvs_flush ? "true" : "false");

#endif

	if (data->notify_fifo.name) {

		conf_write(fp, " Global notify fifo = %s", data->notify_fifo.name);

		if (data->notify_fifo.script)

			conf_write(fp, " Global notify fifo script = %s, uid:gid %d:%d",

				    cmd_str(data->notify_fifo.script),

				    data->notify_fifo.script->uid,

				    data->notify_fifo.script->gid);

	}

#ifdef _WITH_VRRP_

	if (data->vrrp_notify_fifo.name) {

		conf_write(fp, " VRRP notify fifo = %s", data->vrrp_notify_fifo.name);

		if (data->vrrp_notify_fifo.script)

			conf_write(fp, " VRRP notify fifo script = %s, uid:gid %d:%d",

				    cmd_str(data->vrrp_notify_fifo.script),

				    data->vrrp_notify_fifo.script->uid,

				    data->vrrp_notify_fifo.script->gid);

	}

#endif

#ifdef _WITH_LVS_

	if (data->lvs_notify_fifo.name) {

		conf_write(fp, " LVS notify fifo = %s", data->lvs_notify_fifo.name);

		if (data->lvs_notify_fifo.script)

			conf_write(fp, " LVS notify fifo script = %s, uid:gid %d:%d",

				    cmd_str(data->lvs_notify_fifo.script),

				    data->lvs_notify_fifo.script->uid,

				    data->lvs_notify_fifo.script->gid);

	}

#endif

#ifdef _WITH_VRRP_

	if (data->vrrp_mcast_group4.sin_family) {

		conf_write(fp, " VRRP IPv4 mcast group = %s"

				    , inet_sockaddrtos((struct sockaddr_storage *)&data->vrrp_mcast_group4));

	}

	if (data->vrrp_mcast_group6.sin6_family) {

		conf_write(fp, " VRRP IPv6 mcast group = %s"

				    , inet_sockaddrtos((struct sockaddr_storage *)&data->vrrp_mcast_group6));

	}

	conf_write(fp, " Gratuitous ARP delay = %u",

		       data->vrrp_garp_delay/TIMER_HZ);

	conf_write(fp, " Gratuitous ARP repeat = %u", data->vrrp_garp_rep);

	conf_write(fp, " Gratuitous ARP refresh timer = %lu",

		       data->vrrp_garp_refresh.tv_sec);

	conf_write(fp, " Gratuitous ARP refresh repeat = %d", data->vrrp_garp_refresh_rep);

	conf_write(fp, " Gratuitous ARP lower priority delay = %d", data->vrrp_garp_lower_prio_delay == PARAMETER_UNSET ? PARAMETER_UNSET : data->vrrp_garp_lower_prio_delay / TIMER_HZ);

	conf_write(fp, " Gratuitous ARP lower priority repeat = %d", data->vrrp_garp_lower_prio_rep);

	conf_write(fp, " Send advert after receive lower priority advert = %s", data->vrrp_lower_prio_no_advert ? "false" : "true");

	conf_write(fp, " Send advert after receive higher priority advert = %s", data->vrrp_higher_prio_send_advert ? "true" : "false");

	conf_write(fp, " Gratuitous ARP interval = %d", data->vrrp_garp_interval);

	conf_write(fp, " Gratuitous NA interval = %d", data->vrrp_gna_interval);

	conf_write(fp, " VRRP default protocol version = %d", data->vrrp_version);

	if (data->vrrp_iptables_inchain[0])

		conf_write(fp," Iptables input chain = %s", data->vrrp_iptables_inchain);

	if (data->vrrp_iptables_outchain[0])

		conf_write(fp," Iptables output chain = %s", data->vrrp_iptables_outchain);

#ifdef _HAVE_LIBIPSET_

	conf_write(fp, " Using ipsets = %s", data->using_ipsets ? "true" : "false");

	if (data->vrrp_ipset_address[0])

		conf_write(fp," ipset IPv4 address set = %s", data->vrrp_ipset_address);

	if (data->vrrp_ipset_address6[0])

		conf_write(fp," ipset IPv6 address set = %s", data->vrrp_ipset_address6);

	if (data->vrrp_ipset_address_iface6[0])

		conf_write(fp," ipset IPv6 address,iface set = %s", data->vrrp_ipset_address_iface6);

#endif

	conf_write(fp, " VRRP check unicast_src = %s", data->vrrp_check_unicast_src ? "true" : "false");

	conf_write(fp, " VRRP skip check advert addresses = %s", data->vrrp_skip_check_adv_addr ? "true" : "false");

	conf_write(fp, " VRRP strict mode = %s", data->vrrp_strict ? "true" : "false");

	conf_write(fp, " VRRP process priority = %d", data->vrrp_process_priority);

	conf_write(fp, " VRRP don't swap = %s", data->vrrp_no_swap ? "true" : "false");

#ifdef _HAVE_SCHED_RT_

	conf_write(fp, " VRRP realtime priority = %u", data->vrrp_realtime_priority);

#if HAVE_DECL_RLIMIT_RTTIME

	conf_write(fp, " VRRP realtime limit = %lu", data->vrrp_rlimit_rt);

#endif

#endif

#endif

#ifdef _WITH_LVS_

	conf_write(fp, " Checker process priority = %d", data->checker_process_priority);

	conf_write(fp, " Checker don't swap = %s", data->checker_no_swap ? "true" : "false");

#ifdef _HAVE_SCHED_RT_

	conf_write(fp, " Checker realtime priority = %u", data->checker_realtime_priority);

#if HAVE_DECL_RLIMIT_RTTIME

	conf_write(fp, " Checker realtime limit = %lu", data->checker_rlimit_rt);

#endif

#endif

#endif

#ifdef _WITH_BFD_

	conf_write(fp, " BFD process priority = %d", data->bfd_process_priority);

	conf_write(fp, " BFD don't swap = %s", data->bfd_no_swap ? "true" : "false");

#ifdef _HAVE_SCHED_RT_

	conf_write(fp, " BFD realtime priority = %u", data->bfd_realtime_priority);

#if HAVE_DECL_RLIMIT_RTTIME

	conf_write(fp, " BFD realtime limit = %lu", data->bfd_rlimit_rt);

#endif

#endif

#endif

#ifdef _WITH_SNMP_VRRP_

	conf_write(fp, " SNMP vrrp %s", data->enable_snmp_vrrp ? "enabled" : "disabled");

#endif

#ifdef _WITH_SNMP_CHECKER_

	conf_write(fp, " SNMP checker %s", data->enable_snmp_checker ? "enabled" : "disabled");

#endif

#ifdef _WITH_SNMP_RFCV2_

	conf_write(fp, " SNMP RFCv2 %s", data->enable_snmp_rfcv2 ? "enabled" : "disabled");

#endif

#ifdef _WITH_SNMP_RFCV3_

	conf_write(fp, " SNMP RFCv3 %s", data->enable_snmp_rfcv3 ? "enabled" : "disabled");

#endif

#ifdef _WITH_SNMP_

	conf_write(fp, " SNMP traps %s", data->enable_traps ? "enabled" : "disabled");

	conf_write(fp, " SNMP socket = %s", data->snmp_socket ? data->snmp_socket : "default (unix:/var/agentx/master)");

#endif

#ifdef _WITH_DBUS_

	conf_write(fp, " DBus %s", data->enable_dbus ? "enabled" : "disabled");

	conf_write(fp, " DBus service name = %s", data->dbus_service_name ? data->dbus_service_name : "");

#endif

	conf_write(fp, " Script security %s", script_security ? "enabled" : "disabled");

	conf_write(fp, " Default script uid:gid %d:%d", default_script_uid, default_script_gid);

#ifdef _WITH_VRRP_

	conf_write(fp, " vrrp_netlink_cmd_rcv_bufs = %u", global_data->vrrp_netlink_cmd_rcv_bufs);

	conf_write(fp, " vrrp_netlink_cmd_rcv_bufs_force = %u", global_data->vrrp_netlink_cmd_rcv_bufs_force);

	conf_write(fp, " vrrp_netlink_monitor_rcv_bufs = %u", global_data->vrrp_netlink_monitor_rcv_bufs);

	conf_write(fp, " vrrp_netlink_monitor_rcv_bufs_force = %u", global_data->vrrp_netlink_monitor_rcv_bufs_force);

#endif

#ifdef _WITH_LVS_

	conf_write(fp, " lvs_netlink_cmd_rcv_bufs = %u", global_data->lvs_netlink_cmd_rcv_bufs);

	conf_write(fp, " lvs_netlink_cmd_rcv_bufs_force = %u", global_data->lvs_netlink_cmd_rcv_bufs_force);

	conf_write(fp, " lvs_netlink_monitor_rcv_bufs = %u", global_data->lvs_netlink_monitor_rcv_bufs);

	conf_write(fp, " lvs_netlink_monitor_rcv_bufs_force = %u", global_data->lvs_netlink_monitor_rcv_bufs_force);

	conf_write(fp, " rs_init_notifies = %u", global_data->rs_init_notifies);

	conf_write(fp, " no_checker_emails = %u", global_data->no_checker_emails);

#endif

#ifdef _WITH_VRRP_

	buf[0] = '\0';

	if (global_data->vrrp_rx_bufs_policy & RX_BUFS_POLICY_MTU)

		strcpy(buf, " rx_bufs_policy = MTU");

	else if (global_data->vrrp_rx_bufs_policy & RX_BUFS_POLICY_ADVERT)

		strcpy(buf, " rx_bufs_policy = ADVERT");

	else if (global_data->vrrp_rx_bufs_policy & RX_BUFS_SIZE)

		sprintf(buf, " rx_bufs_size = %lu", global_data->vrrp_rx_bufs_size);

	if (buf[0])

		conf_write(fp, "%s", buf);

	conf_write(fp, " rx_bufs_multiples = %u", global_data->vrrp_rx_bufs_multiples);

	conf_write(fp, " umask = 0%o", global_data->umask);

#endif

}