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Current File : /etc/sysconfig/network-scripts/ifup-eth
#!/bin/bash
# Network Interface Configuration System
# Copyright (c) 1996-2014 Red Hat, Inc. all rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License, version 2,
# as published by the Free Software Foundation.
#
# 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.
#
# 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.

. /etc/init.d/functions

cd /etc/sysconfig/network-scripts
. ./network-functions

[ -f ../network ] && . ../network

CONFIG=${1}

need_config "${CONFIG}"

source_config

if [ "${BOOTPROTO}" = "bootp" -o "${BOOTPROTO}" = "dhcp" ]; then
    DYNCONFIG=true
fi

# load the module associated with that device
# /sbin/modprobe ${REALDEVICE}
is_available ${REALDEVICE}

# bail out, if the MAC does not fit
if [ -n "${HWADDR}" ]; then
    FOUNDMACADDR=$(get_hwaddr ${REALDEVICE})
    if [ "${FOUNDMACADDR}" != "${HWADDR}" -a "${FOUNDMACADDR}" != "${MACADDR}" ]; then
        net_log $"Device ${DEVICE} has different MAC address than expected, ignoring."
        exit 1
    fi
fi

# If the device is a bridge, create it with brctl, if available.
if [ "${TYPE}" = "Bridge" ]; then
    if [ ! -x /usr/sbin/brctl ]; then
        net_log $"Bridge support not available: brctl not found"
        exit 1
    fi

    if [ ! -d /sys/class/net/${DEVICE}/bridge ]; then
        /usr/sbin/brctl addbr -- ${DEVICE} || exit 1
    fi

    [ -n "${DELAY}" ] && /usr/sbin/brctl setfd -- ${DEVICE} ${DELAY}
    [ -n "${STP}" ] && /usr/sbin/brctl stp -- ${DEVICE} ${STP}
    [ -n "${PRIO}" ] && /usr/sbin/brctl setbridgeprio ${DEVICE} ${PRIO}
    [ -n "${AGEING}" ] && /usr/sbin/brctl setageing ${DEVICE} ${AGEING}

    # add the bits to setup driver parameters here
    for arg in $BRIDGING_OPTS ; do
        key=${arg%%=*};
        value=${arg##*=};
        if [ "${key}" != "multicast_router" -a "${key}" != "hash_max" -a "${key}" != "multicast_snooping" ]; then
            echo $value > /sys/class/net/${DEVICE}/bridge/$key
        fi
    done

    # set LINKDELAY (used as timeout when calling check_link_down())
    # to at least (${DELAY} * 2) + 7 if STP is enabled. This is the
    # minimum time required for /sys/class/net/$REALDEVICE/carrier to
    # become 1 after "ip link set dev $DEVICE up" is called.
    if is_true "${STP}"; then
        if [ -n "${DELAY}" ]; then
          forward_delay="${DELAY}"
        else
          # If the ${DELAY} value is not set by the user, then we need to obtain
          # the forward_delay value from kernel first, and convert it to seconds.
          # Otherwise STP might not correctly complete the startup before trying
          # to obtain an IP address from DHCP.
          forward_delay="$(cat /sys/devices/virtual/net/${DEVICE}/bridge/forward_delay)"
          forward_delay="$(convert2sec ${forward_delay} centi)"
        fi

        forward_delay=$(bc -q <<< "${forward_delay} * 2 + 7")

        # It's possible we are comparing floating point numbers here, therefore
        # we are using 'bc' for comparison. The [ ] and [[ ]] do not work.
        (( $(bc -l <<< "${LINKDELAY:-0} < ${forward_delay}") )) && LINKDELAY=${forward_delay}

        unset forward_delay
    fi
fi

# Create tap device.
if [ "${TYPE}" = "Tap" ]; then
    [ -n "${OWNER}" ] && OWNER="user ${OWNER}"
    TUNMODE="mode tap"
    [[ ${DEVICE} == tun* ]] && TUNMODE="mode tun"
    ip tuntap add ${TUNMODE} ${OWNER} dev ${DEVICE} > /dev/null
fi

# Team master initialization.
if [ -n "${TEAM_CONFIG}" ] && [ ! "${DEVICETYPE}" = "Team" ] && [ -x ./ifup-Team ]; then
    ./ifup-Team ${CONFIG} $2
fi

if [ -z "${REALDEVICE}" ]; then
  net_log $"Device name does not seem to be present."
  exit 1
fi

# now check the real state
is_available_wait ${REALDEVICE} ${DEVTIMEOUT} || {
    if [ -n "$alias" ]; then
        net_log $"$alias device ${DEVICE} does not seem to be present, delaying initialization."
    else
        net_log $"Device ${DEVICE} does not seem to be present, delaying initialization."
    fi
    exit 1
}


# this isn't the same as the MAC in the configuration filename.  It is
# available as a configuration option in the config file, forcing the kernel
# to think an ethernet card has a different MAC address than it really has.
if [ -n "${MACADDR}" ]; then
    ip link set dev ${DEVICE} address ${MACADDR}
fi
if [ -n "${MTU}" ]; then
    ip link set dev ${DEVICE} mtu ${MTU}
fi

# is the device wireless? If so, configure wireless device specifics
is_wireless_device ${DEVICE} && . ./ifup-wireless

# Team slave device?
if [ -n "${TEAM_MASTER}" ] && [ ! "${DEVICETYPE}" = "TeamPort" ] && [ -x ./ifup-TeamPort ]; then
    ./ifup-TeamPort ${CONFIG} $2
    ethtool_set
    exit 0
fi

# slave device?
if [ "${SLAVE}" = yes -a "${ISALIAS}" = no -a "${MASTER}" != "" ]; then
    install_bonding_driver ${MASTER}
    grep -wq "${DEVICE}" /sys/class/net/${MASTER}/bonding/slaves 2>/dev/null || {
        /sbin/ip link set dev ${DEVICE} down
        echo "+${DEVICE}" > /sys/class/net/${MASTER}/bonding/slaves 2>/dev/null
    }
    ethtool_set

    exit 0
fi

# Bonding initialization. For DHCP, we need to enslave the devices early,
# so it can actually get an IP.
if [ "$ISALIAS" = no ] && is_bonding_device ${DEVICE} ; then
    install_bonding_driver ${DEVICE}
    /sbin/ip link set dev ${DEVICE} up
    for device in $(LANG=C grep -l "^[[:space:]]*MASTER=['\"]\?${DEVICE}['\"]\?\([[:space:]#]\|$\)" /etc/sysconfig/network-scripts/ifcfg-*) ; do
        is_ignored_file "$device" && continue
        /sbin/ifup ${device##*/} || net_log "Unable to start slave device ${device##*/} for master ${DEVICE}." warning
    done

    [ -n "${LINKDELAY}" ] && /bin/sleep ${LINKDELAY}

    # add the bits to setup the needed post enslavement parameters
    for arg in $BONDING_OPTS ; do   
        key=${arg%%=*};
        value=${arg##*=};
        if [ "${key}" = "primary" ]; then 
            echo $value > /sys/class/net/${DEVICE}/bonding/$key
        fi
    done
fi

# If the device is part of a bridge, add the device to the bridge
if [ -n "${BRIDGE}" ] && [ -x /usr/sbin/brctl ]; then
    if [ ! -d /sys/class/net/${BRIDGE}/bridge ]; then
        /usr/sbin/brctl addbr -- ${BRIDGE} 2>/dev/null
    fi
    /sbin/ip addr flush dev ${DEVICE} 2>/dev/null
    /sbin/ip link set dev ${DEVICE} up
    ethtool_set
    [ -n "${LINKDELAY}" ] && /bin/sleep ${LINKDELAY}
    /usr/sbin/brctl addif -- ${BRIDGE} ${DEVICE}
    # add the bits to setup driver parameters here
    for arg in $BRIDGING_OPTS ; do
        key=${arg%%=*};
        value=${arg##*=};
        echo $value > /sys/class/net/${DEVICE}/brport/$key
    done
    # Upon adding a device to a bridge,
    # it's necessary to make radvd reload its config
    [ -r /var/run/radvd/radvd.pid ] && kill -HUP $(cat /var/run/radvd/radvd.pid)
    exit 0
fi

if [ -n "${DYNCONFIG}" ] && [ -x /sbin/dhclient ]; then
    if is_true "${PERSISTENT_DHCLIENT}"; then
        ONESHOT="";
    else
        ONESHOT="-1";
    fi;
    generate_config_file_name
    generate_lease_file_name

    # Initialize the dhclient args and obtain the hostname options if needed:
    DHCLIENTARGS="${DHCLIENTARGS} ${ONESHOT} -q ${DHCLIENTCONF} -lf ${LEASEFILE} -pf /var/run/dhclient-${DEVICE}.pid"
    set_hostname_options DHCLIENTARGS

    echo
    echo -n $"Determining IP information for ${DEVICE}..."
    if ! is_true "${PERSISTENT_DHCLIENT}" && check_link_down ${DEVICE}; then
        echo $" failed; no link present.  Check cable?"
        exit 1
    fi

    ethtool_set

    if /sbin/dhclient ${DHCLIENTARGS} ${DEVICE} ; then
        echo $" done."
        dhcpipv4="good"
    else
        echo $" failed."
        if is_true "${IPV4_FAILURE_FATAL}"; then
            exit 1
        fi
        if is_false "$IPV6INIT" || ! is_true "$DHCPV6C"; then
            exit 1
        fi
        net_log "Unable to obtain IPv4 DHCP address ${DEVICE}." warning
    fi
    # end dynamic device configuration
else 
    if [ -z "${IPADDR}" -a -z "${IPADDR0}" -a -z "${IPADDR1}" -a -z "${IPADDR2}" ]; then
        # enable device without IP, useful for e.g. PPPoE
        ip link set dev ${REALDEVICE} up
        ethtool_set
        [ -n "${LINKDELAY}" ] && /bin/sleep ${LINKDELAY}
    else

        expand_config

        [ -n "${ARP}" ] && \
            ip link set dev ${REALDEVICE} $(toggle_value arp $ARP)

        if ! ip link set dev ${REALDEVICE} up ; then
            net_log $"Failed to bring up ${DEVICE}."
            exit 1
        fi

        ethtool_set

        [ -n "${LINKDELAY}" ] && /bin/sleep ${LINKDELAY}

        if [ "${DEVICE}" = "lo" ]; then
            SCOPE="scope host"
        else
            SCOPE=${SCOPE:-}
        fi

        if [ -n "$SRCADDR" ]; then
            SRC="src $SRCADDR"
        else
            SRC=
        fi

        # set IP address(es)
        for idx in {0..256} ; do
            if [ -z "${ipaddr[$idx]}" ]; then
                break
            fi

            if ! LC_ALL=C ip addr ls ${REALDEVICE} | LC_ALL=C grep -q "${ipaddr[$idx]}/${prefix[$idx]}" ; then
                if [ "${REALDEVICE}" != "lo" ] && [ "${arpcheck[$idx]}" != "no" ] ; then
                    ARPING=$(/sbin/arping -c 2 -w ${ARPING_WAIT:-3} -D -I ${REALDEVICE} ${ipaddr[$idx]})
                    if [ $? = 1 ]; then
                        ARPINGMAC=$(echo $ARPING |  sed -ne 's/.*\[\(.*\)\].*/\1/p')
                        net_log $"Error, some other host ($ARPINGMAC) already uses address ${ipaddr[$idx]}."
                        exit 1
                    fi
                fi

                if ! ip addr add ${ipaddr[$idx]}/${prefix[$idx]} \
                    brd ${broadcast[$idx]:-+} dev ${REALDEVICE} ${SCOPE} label ${DEVICE}; then
                    net_log $"Error adding address ${ipaddr[$idx]} for ${DEVICE}."
                fi
            fi

            if [ -n "$SRCADDR" ]; then
                sysctl -w "net.ipv4.conf.${SYSCTLDEVICE}.arp_filter=1" >/dev/null 2>&1
            fi

            # update ARP cache of neighboring computers
            if ! is_false "${arpupdate[$idx]}" && [ "${REALDEVICE}" != "lo" ]; then
                /sbin/arping -q -A -c 1 -I ${REALDEVICE} ${ipaddr[$idx]}
                ( sleep 2;
                /sbin/arping -q -U -c 1 -I ${REALDEVICE} ${ipaddr[$idx]} ) > /dev/null 2>&1 < /dev/null &
            fi

            # set lifetime of address to forever
            ip addr change ${ipaddr[$idx]}/${prefix[$idx]} dev ${REALDEVICE} valid_lft forever preferred_lft forever
        done

        # Set a default route.
        if [ "${DEFROUTE}" != "no" ] && [ -z "${GATEWAYDEV}" -o "${GATEWAYDEV}" = "${REALDEVICE}" ]; then
            # set up default gateway. replace if one already exists
            if [ -n "${GATEWAY}" ] && [ "$(ipcalc --network ${GATEWAY} ${netmask[0]} 2>/dev/null)" = "NETWORK=${NETWORK}" ]; then
                ip route replace default ${METRIC:+metric $METRIC} \
                    ${EXTRA_ROUTE_OPTS} \
                    via ${GATEWAY} ${WINDOW:+window $WINDOW} ${SRC} \
                    ${GATEWAYDEV:+dev $GATEWAYDEV} ||
                    net_log $"Error adding default gateway ${GATEWAY} for ${DEVICE}."
            elif [ "${GATEWAYDEV}" = "${DEVICE}" ]; then
                ip route replace default ${METRIC:+metric $METRIC} \
                    ${EXTRA_ROUTE_OPTS} \
                    ${SRC} ${WINDOW:+window $WINDOW} dev ${REALDEVICE} ||
                    net_log $"Error adding default gateway for ${REALDEVICE}."
            fi
        fi
    fi
fi

# Add Zeroconf route.
if [ -z "${NOZEROCONF}" -a "${ISALIAS}" = "no" -a "${REALDEVICE}" != "lo" ]; then
    ip route add 169.254.0.0/16 dev ${REALDEVICE} metric $((1000 + $(cat /sys/class/net/${REALDEVICE}/ifindex))) scope link
fi

if [ "${TYPE}" = "Bridge" ]; then
    for arg in $BRIDGING_OPTS ; do
        key=${arg%%=*};
        value=${arg##*=};
        if [ "${key}" = "multicast_router" -o "${key}" = "hash_max" -o "${key}" = "multicast_snooping" ]; then
            echo $value > /sys/class/net/${DEVICE}/bridge/$key
        fi
    done
fi

# IPv6 initialisation?
/etc/sysconfig/network-scripts/ifup-ipv6 ${CONFIG}
if is_true "${DHCPV6C}" && [ -x /sbin/dhclient ]; then

    # Assign interface into a firewalld zone so we can
    # obtain the IPv6 via DHCPv6 (empty ZONE means default):
    if [ "${REALDEVICE}" != "lo" ]; then
        dbus-send --print-reply --system --dest=org.fedoraproject.FirewallD1 \
                  /org/fedoraproject/FirewallD1 \
                  org.fedoraproject.FirewallD1.zone.changeZoneOfInterface \
                  string:"${ZONE}" string:"${DEVICE}" \
                  > /dev/null 2>&1
    fi

    generate_config_file_name 6
    generate_lease_file_name 6
    echo
    echo -n $"Determining IPv6 information for ${DEVICE}..."

    # Initialize the dhclient args for IPv6 and obtain the hostname options if needed:
    DHCLIENTARGS="-6 -1 ${DHCPV6C_OPTIONS} ${DHCLIENTCONF} -lf ${LEASEFILE} -pf /var/run/dhclient6-${DEVICE}.pid ${DEVICE}"
    set_hostname_options DHCLIENTARGS

    if /sbin/dhclient $DHCLIENTARGS; then
        echo $" done."
    else
        echo $" failed."
        if [ "${dhcpipv4}" = "good" -o -n "${IPADDR}" ]; then
            net_log "Unable to obtain IPv6 DHCP address ${DEVICE}." warning
        else
            exit 1
        fi
    fi
fi

exec /etc/sysconfig/network-scripts/ifup-post ${CONFIG} ${2}

Youez - 2016 - github.com/yon3zu
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