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Current File : //etc/rc.d/netif

#!/bin/sh
#
# Copyright (c) 2003 The FreeBSD Project. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE PROJECT ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE PROJECT BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# $FreeBSD: releng/12.1/libexec/rc/rc.d/netif 300931 2016-05-29 02:59:03Z ngie $
#

# PROVIDE: netif
# REQUIRE: FILESYSTEMS iovctl serial sppp sysctl
# REQUIRE: hostid ipfilter ipfs
# KEYWORD: nojailvnet

. /etc/rc.subr
. /etc/network.subr

name="netif"
desc="Network interface setup"
rcvar="${name}_enable"
start_cmd="netif_start"
stop_cmd="netif_stop"
wlanup_cmd="wlan_up"
wlandown_cmd="wlan_down"
cloneup_cmd="clone_up"
clonedown_cmd="clone_down"
clear_cmd="doclear"
vnetup_cmd="vnet_up"
vnetdown_cmd="vnet_down"
extra_commands="cloneup clonedown clear vnetup vnetdown"
cmdifn=

set_rcvar_obsolete ipv6_enable ipv6_activate_all_interfaces
set_rcvar_obsolete ipv6_prefer

netif_start()
{
	local _if

	# Set the list of interfaces to work on.
	#
	cmdifn=$*

	if [ -z "$cmdifn" ]; then
		#
		# We're operating as a general network start routine.
		#

		# disable SIGINT (Ctrl-c) when running at startup
		trap : 2
	fi

	# Create IEEE802.11 interface
	wlan_up $cmdifn

	# Create cloned interfaces
	clone_up $cmdifn

	# Rename interfaces.
	ifnet_rename $cmdifn

	# Configure the interface(s).
	netif_common ifn_start $cmdifn

	if [ -f /etc/rc.d/ipfilter ] ; then
		# Resync ipfilter
		/etc/rc.d/ipfilter quietresync
	fi
	if [ -f /etc/rc.d/bridge -a -n "$cmdifn" ] ; then
		/etc/rc.d/bridge start $cmdifn
	fi
	if [ -f /etc/rc.d/routing -a -n "$cmdifn" ] ; then
		for _if in $cmdifn; do
			/etc/rc.d/routing static any $_if
		done
	fi
}

netif_stop()
{
	_clone_down=1
	_wlan_down=1
	netif_stop0 $*
}

doclear()
{
	_clone_down=
	_wlan_down=
	netif_stop0 $*
}

netif_stop0()
{
	local _if

	# Set the list of interfaces to work on.
	#
	cmdifn=$*

	# Deconfigure the interface(s)
	netif_common ifn_stop $cmdifn

	# Destroy wlan interfaces
	if [ -n "$_wlan_down" ]; then
		wlan_down $cmdifn
	fi

	# Destroy cloned interfaces
	if [ -n "$_clone_down" ]; then
		clone_down $cmdifn
	fi

	if [ -f /etc/rc.d/routing -a -n "$cmdifn" ] ; then
		for _if in $cmdifn; do
			/etc/rc.d/routing stop any $_if
		done
	fi
}

vnet_up()
{
	cmdifn=$*

	netif_common ifn_vnetup $cmdifn
}

vnet_down()
{
	cmdifn=$*

	netif_common ifn_vnetdown $cmdifn
}

# netif_common routine
#	Common configuration subroutine for network interfaces. This
#	routine takes all the preparatory steps needed for configuriing
#	an interface and then calls $routine.
netif_common()
{
	local _cooked_list _tmp_list _fail _func _ok _str _cmdifn

	_func=

	if [ -z "$1" ]; then
		err 1 "netif_common(): No function name specified."
	else
		_func="$1"
		shift
	fi

	# Set the scope of the command (all interfaces or just one).
	#
	_cooked_list=
	_tmp_list=
	_cmdifn=$*
	if [ -n "$_cmdifn" ]; then
		# Don't check that the interface(s) exist.  We need to run
		# the down code even when the interface doesn't exist to
		# kill off wpa_supplicant.
		# XXXBED: is this really true or does wpa_supplicant die?
		# if so, we should get rid of the devd entry
		_cooked_list="$_cmdifn"
	else
		_cooked_list="`list_net_interfaces`"
	fi

	# Expand epair[0-9] to epair[0-9][ab].
	for ifn in $_cooked_list; do
	case ${ifn#epair} in
	[0-9]*[ab])	;;	# Skip epair[0-9]*[ab].
	[0-9]*)
		for _str in $_cooked_list; do
		case $_str in
		$ifn)	_tmp_list="$_tmp_list ${ifn}a ${ifn}b" ;;
		*)	_tmp_list="$_tmp_list ${ifn}" ;;
		esac
		done
		_cooked_list=${_tmp_list# }
	;;
	esac
	done

	_dadwait=
	_fail=
	_ok=
	for ifn in ${_cooked_list# }; do
		# Skip if ifn does not exist.
		case $_func in
		ifn_stop)
			if ! ${IFCONFIG_CMD} $ifn > /dev/null 2>&1; then
				warn "$ifn does not exist.  Skipped."
				_fail="${_fail} ${ifn}"
				continue
			fi
		;;
		esac
		if ${_func} ${ifn} $2; then
			_ok="${_ok} ${ifn}"
			if ipv6if ${ifn}; then
				_dadwait=1
			fi
		else
			_fail="${_fail} ${ifn}"
		fi
	done

	# inet6 address configuration needs sleep for DAD.
	case ${_func}:${_dadwait} in
	ifn_start:1|ifn_vnetup:1|ifn_vnetdown:1)
		sleep `${SYSCTL_N} net.inet6.ip6.dad_count`
		sleep 1
	;;
	esac

	_str=
	if [ -n "${_ok}" ]; then
		case ${_func} in
		ifn_start)
			_str='Starting'
		;;
		ifn_stop)
			_str='Stopping'
		;;
		ifn_vnetup)
			_str='Moving'
		;;
		ifn_vnetdown)
			_str='Reclaiming'
		;;
		esac
		echo "${_str} Network:${_ok}."
		case ${_func} in
		ifn_vnetup)
			# Clear _ok not to do "ifconfig $ifn"
			# because $ifn is no longer in the current vnet.
			_ok=
		;;
		esac
		if check_startmsgs; then
			for ifn in ${_ok}; do
				/sbin/ifconfig ${ifn}
			done
		fi
	fi

	debug "The following interfaces were not configured: $_fail"
}

# Load the old "network" config file also for compatibility.
# This is needed for mfsBSD at least.
load_rc_config network
load_rc_config $name
run_rc_command $*
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