<h2>Editing File: /usr/lib/dracut/modules.d/35network-legacy/ifup.sh</h2><form method='post'><textarea name='content' class='file-edit'>#!/bin/sh
#
# We don't need to check for ip= errors here, that is handled by the
# cmdline parser script
#
# without $2 means this is for real netroot case
# or it is for manually bring up network ie. for kdump scp vmcore
PATH=/usr/sbin:/usr/bin:/sbin:/bin

type getarg &gt;/dev/null 2&gt;&amp;1 || . /lib/dracut-lib.sh
type ip_to_var &gt;/dev/null 2&gt;&amp;1 || . /lib/net-lib.sh

# Huh? No $1?
[ -z &quot;$1&quot; ] &amp;&amp; exit 1

# $netif reads easier than $1
netif=$1

# loopback is always handled the same way
if [ &quot;$netif&quot; = &quot;lo&quot; ] ; then
    ip link set lo up
    ip addr add 127.0.0.1/8 dev lo
    exit 0
fi

# Run dhclient
do_dhcp() {
    # dhclient-script will mark the netif up and generate the online
    # event for nfsroot
    # XXX add -V vendor class and option parsing per kernel

    local _COUNT=0
    local _timeout=$(getargs rd.net.timeout.dhcp=)
    local _DHCPRETRY=$(getargs rd.net.dhcp.retry=)
    _DHCPRETRY=${_DHCPRETRY:-1}

    [ -e /tmp/dhclient.$netif.pid ] &amp;&amp; return 0

    if ! iface_has_carrier $netif; then
        warn &quot;No carrier detected on interface $netif&quot;
        return 1
    fi

    if [ ! -e /run/NetworkManager/conf.d/10-dracut-dhclient.conf ]; then
        mkdir -p /run/NetworkManager/conf.d
        echo '[main]' &gt; /run/NetworkManager/conf.d/10-dracut-dhclient.conf
        echo 'dhcp=dhclient' &gt;&gt;/run/NetworkManager/conf.d/10-dracut-dhclient.conf
    fi

    while [ $_COUNT -lt $_DHCPRETRY ]; do
        info &quot;Starting dhcp for interface $netif&quot;
        dhclient &quot;$@&quot; \
                 ${_timeout:+--timeout $_timeout} \
                 -q \
                 -1 \
                 -cf /etc/dhclient.conf \
                 -pf /tmp/dhclient.$netif.pid \
                 -lf /tmp/dhclient.$netif.lease \
                 $netif \
            &amp;&amp; return 0
        _COUNT=$(($_COUNT+1))
        [ $_COUNT -lt $_DHCPRETRY ] &amp;&amp; sleep 1
    done
    warn &quot;dhcp for interface $netif failed&quot;
    # nuke those files since we failed; we might retry dhcp again if it's e.g.
    # `ip=dhcp,dhcp6` and we check for the PID file at the top
    rm -f /tmp/dhclient.$netif.{pid,lease}
    return 1
}

load_ipv6() {
    [ -d /proc/sys/net/ipv6 ] &amp;&amp; return
    modprobe ipv6
    i=0
    while [ ! -d /proc/sys/net/ipv6 ]; do
        i=$(($i+1))
        [ $i -gt 10 ] &amp;&amp; break
        sleep 0.1
    done
}

do_ipv6auto() {
    local ret
    load_ipv6
    echo 0 &gt; /proc/sys/net/ipv6/conf/$netif/forwarding
    echo 1 &gt; /proc/sys/net/ipv6/conf/$netif/accept_ra
    echo 1 &gt; /proc/sys/net/ipv6/conf/$netif/accept_redirects
    linkup $netif
    wait_for_ipv6_auto $netif
    ret=$?
    if [ -n &quot;$hostname&quot; ]; then
        safe_hostname=$(printf '%s' &quot;${hostname}&quot;)
        printf 'echo %q &gt; /proc/sys/kernel/hostname\n' &quot;$safe_hostname&quot; &gt; /tmp/net.&quot;$netif&quot;.hostname
    fi
    return &quot;$ret&quot;
}

# Handle static ip configuration
do_static() {
    strglobin $ip '*:*:*' &amp;&amp; load_ipv6

    if ! iface_has_carrier &quot;$netif&quot;; then
        warn &quot;No carrier detected on interface $netif&quot;
        return 1
    elif ! linkup &quot;$netif&quot;; then
        warn &quot;Could not bring interface $netif up!&quot;
        return 1
    fi

    ip route get &quot;$ip&quot; 2&gt;/dev/null | {
        read a rest
        if [ &quot;$a&quot; = &quot;local&quot; ]; then
            warn &quot;Not assigning $ip to interface $netif, cause it is already assigned!&quot;
            return 1
        fi
        return 0
    } || return 1

    [ -n &quot;$macaddr&quot; ] &amp;&amp; ip link set address $macaddr dev $netif
    [ -n &quot;$mtu&quot; ] &amp;&amp; ip link set mtu $mtu dev $netif
    if strglobin $ip '*:*:*'; then
        # note no ip addr flush for ipv6
        ip addr add $ip/$mask ${srv:+peer $srv} dev $netif
        echo 0 &gt; /proc/sys/net/ipv6/conf/$netif/forwarding
        echo 1 &gt; /proc/sys/net/ipv6/conf/$netif/accept_ra
        echo 1 &gt; /proc/sys/net/ipv6/conf/$netif/accept_redirects
        wait_for_ipv6_dad $netif
    else
        if [ -z &quot;$srv&quot; ]; then
            if command -v arping2 &gt;/dev/null; then
                if arping2 -q -C 1 -c 2 -I $netif -0 $ip ; then
                    warn &quot;Duplicate address detected for $ip for interface $netif.&quot;
                    return 1
                fi
            else
                if ! arping -f -q -D -c 2 -I $netif $ip ; then
                    warn &quot;Duplicate address detected for $ip for interface $netif.&quot;
                    return 1
                fi
            fi
        fi
        ip addr flush dev $netif
        ip addr add $ip/$mask ${srv:+peer $srv} brd + dev $netif
    fi

    [ -n &quot;$gw&quot; ] &amp;&amp; printf &quot;ip route replace default via %q dev %q\n&quot; &quot;$gw&quot; &quot;$netif&quot; &gt; &quot;/tmp/net.${netif}.gw&quot;

    if [ -n &quot;$hostname&quot; ]; then
        safe_hostname=$(printf '%s' &quot;${hostname}&quot;)
        printf 'echo %q &gt; /proc/sys/kernel/hostname\n' &quot;$safe_hostname&quot; &gt; /tmp/net.&quot;$netif&quot;.hostname
    fi

    return 0
}

get_vid() {
    case &quot;$1&quot; in
    vlan*)
        echo ${1#vlan}
        ;;
    *.*)
        echo ${1##*.}
        ;;
    esac
}

# check, if we need VLAN's for this interface
if [ -z &quot;$DO_VLAN_PHY&quot; ] &amp;&amp; [ -e /tmp/vlan.${netif}.phy ]; then
    unset DO_VLAN
    NO_AUTO_DHCP=yes DO_VLAN_PHY=yes ifup &quot;$netif&quot;
    modprobe -b -q 8021q

    for i in /tmp/vlan.*.${netif}; do
        [ -e &quot;$i&quot; ] || continue
        unset vlanname
        unset phydevice
        . &quot;$i&quot;
        if [ -n &quot;$vlanname&quot; ]; then
            linkup &quot;$phydevice&quot;
            ip link add dev &quot;$vlanname&quot; link &quot;$phydevice&quot; type vlan id &quot;$(get_vid $vlanname)&quot;
            ifup &quot;$vlanname&quot;
        fi
    done
    exit 0
fi

# Check, if interface is VLAN interface
if ! [ -e /tmp/vlan.${netif}.phy ]; then
    for i in /tmp/vlan.${netif}.*; do
        [ -e &quot;$i&quot; ] || continue
        export DO_VLAN=yes
        break
    done
fi


# bridge this interface?
if [ -z &quot;$NO_BRIDGE_MASTER&quot; ]; then
    for i in /tmp/bridge.*.info; do
        [ -e &quot;$i&quot; ] || continue
        unset bridgeslaves
        unset bridgename
        . &quot;$i&quot;
        for ethname in $bridgeslaves ; do
            [ &quot;$netif&quot; != &quot;$ethname&quot; ] &amp;&amp; continue

            NO_BRIDGE_MASTER=yes NO_AUTO_DHCP=yes ifup $ethname
            linkup $ethname
            if [ ! -e /tmp/bridge.$bridgename.up ]; then
                ip link add name $bridgename type bridge
                echo 0 &gt; /sys/devices/virtual/net/$bridgename/bridge/forward_delay
                &gt; /tmp/bridge.$bridgename.up
            fi
            ip link set dev $ethname master $bridgename
            ifup $bridgename
            exit 0
        done
    done
fi

# enslave this interface to bond?
if [ -z &quot;$NO_BOND_MASTER&quot; ]; then
    for i in /tmp/bond.*.info; do
        [ -e &quot;$i&quot; ] || continue
        unset bondslaves
        unset bondname
        . &quot;$i&quot;
        for slave in $bondslaves ; do
            [ &quot;$netif&quot; != &quot;$slave&quot; ] &amp;&amp; continue

            # already setup
            [ -e /tmp/bond.$bondname.up ] &amp;&amp; exit 0

            # wait for all slaves to show up
            for slave in $bondslaves ; do
                # try to create the slave (maybe vlan or bridge)
                NO_BOND_MASTER=yes NO_AUTO_DHCP=yes ifup $slave

                if ! ip link show dev $slave &gt;/dev/null 2&gt;&amp;1; then
                    # wait for the last slave to show up
                    exit 0
                fi
            done

            modprobe -q -b bonding
            echo &quot;+$bondname&quot; &gt;  /sys/class/net/bonding_masters 2&gt;/dev/null
            ip link set $bondname down

            # Stolen from ifup-eth
            # add the bits to setup driver parameters here
            for arg in $bondoptions ; do
                key=${arg%%=*};
                value=${arg##*=};
                # %{value:0:1} is replaced with non-bash specific construct
                if [ &quot;${key}&quot; = &quot;arp_ip_target&quot; -a &quot;${#value}&quot; != &quot;0&quot; -a &quot;+${value%%+*}&quot; != &quot;+&quot; ]; then
                    OLDIFS=$IFS;
                    IFS=',';
                    for arp_ip in $value; do
                        echo +$arp_ip &gt; /sys/class/net/${bondname}/bonding/$key
                    done
                    IFS=$OLDIFS;
                else
                    echo $value &gt; /sys/class/net/${bondname}/bonding/$key
                fi
            done

            linkup $bondname

            for slave in $bondslaves ; do
                cat /sys/class/net/$slave/address &gt; /tmp/net.${bondname}.${slave}.hwaddr
                ip link set $slave down
                echo &quot;+$slave&quot; &gt; /sys/class/net/$bondname/bonding/slaves
                linkup $slave
            done

            # Set mtu on bond master
            [ -n &quot;$bondmtu&quot; ] &amp;&amp; ip link set mtu $bondmtu dev $bondname

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

            &gt; /tmp/bond.$bondname.up

            NO_BOND_MASTER=yes ifup $bondname
            exit $?
        done
    done
fi

if [ -z &quot;$NO_TEAM_MASTER&quot; ]; then
    for i in /tmp/team.*.info; do
        [ -e &quot;$i&quot; ] || continue
        unset teammaster
        unset teamslaves
        . &quot;$i&quot;
        for slave in $teamslaves ; do
            [ &quot;$netif&quot; != &quot;$slave&quot; ] &amp;&amp; continue

            [ -e /tmp/team.$teammaster.up ] &amp;&amp; exit 0

            # wait for all slaves to show up
            for slave in $teamslaves ; do
                # try to create the slave (maybe vlan or bridge)
                NO_TEAM_MASTER=yes NO_AUTO_DHCP=yes ifup $slave

                if ! ip link show dev $slave &gt;/dev/null 2&gt;&amp;1; then
                    # wait for the last slave to show up
                    exit 0
                fi
            done

            if [ ! -e /tmp/team.$teammaster.up ] ; then
                # We shall only bring up those _can_ come up
                # in case of some slave is gone in active-backup mode
                working_slaves=&quot;&quot;
                for slave in $teamslaves ; do
                    teamdctl ${teammaster} port present ${slave} 2&gt;/dev/null \
                        &amp;&amp; continue
                    ip link set dev $slave up 2&gt;/dev/null
                    if wait_for_if_up $slave; then
                        working_slaves=&quot;$working_slaves$slave &quot;
                    fi
                done
                # Do not add slaves now
                teamd -d -U -n -N -t $teammaster -f /etc/teamd/${teammaster}.conf
                for slave in $working_slaves; do
                    # team requires the slaves to be down before joining team
                    ip link set dev $slave down
                    (
                        unset TEAM_PORT_CONFIG
                        _hwaddr=$(cat /sys/class/net/$slave/address)
                        _subchannels=$(iface_get_subchannels &quot;$slave&quot;)
                        if [ -n &quot;$_hwaddr&quot; ] &amp;&amp; [ -e &quot;/etc/sysconfig/network-scripts/mac-${_hwaddr}.conf&quot; ]; then
                            . &quot;/etc/sysconfig/network-scripts/mac-${_hwaddr}.conf&quot;
                        elif [ -n &quot;$_subchannels&quot; ] &amp;&amp; [ -e &quot;/etc/sysconfig/network-scripts/ccw-${_subchannels}.conf&quot; ]; then
                            . &quot;/etc/sysconfig/network-scripts/ccw-${_subchannels}.conf&quot;
                        elif [ -e &quot;/etc/sysconfig/network-scripts/ifcfg-${slave}&quot; ]; then
                            . &quot;/etc/sysconfig/network-scripts/ifcfg-${slave}&quot;
                        fi

                        if [ -n &quot;${TEAM_PORT_CONFIG}&quot; ]; then
                            /usr/bin/teamdctl ${teammaster} port config update ${slave} &quot;${TEAM_PORT_CONFIG}&quot;
                        fi
                    )
                    teamdctl $teammaster port add $slave
                done

                ip link set dev $teammaster up

                &gt; /tmp/team.$teammaster.up
                NO_TEAM_MASTER=yes ifup $teammaster
                exit $?
            fi
        done
    done
fi

# all synthetic interfaces done.. now check if the interface is available
if ! ip link show dev $netif &gt;/dev/null 2&gt;&amp;1; then
    exit 1
fi

# disable manual ifup while netroot is set for simplifying our logic
# in netroot case we prefer netroot to bringup $netif automaticlly
[ -n &quot;$2&quot; -a &quot;$2&quot; = &quot;-m&quot; ] &amp;&amp; [ -z &quot;$netroot&quot; ] &amp;&amp; manualup=&quot;$2&quot;

if [ -n &quot;$manualup&quot; ]; then
    : &gt; &quot;/tmp/net.${netif}.manualup&quot;
    rm -f &quot;/tmp/net.${netif}.did-setup&quot;
else
    [ -e /tmp/net.${netif}.did-setup ] &amp;&amp; exit 0
    [ -z &quot;$DO_VLAN&quot; ] &amp;&amp; \
    [ -e /sys/class/net/$netif/address ] &amp;&amp; \
        [ -e /tmp/net.$(cat /sys/class/net/$netif/address).did-setup ] &amp;&amp; exit 0
fi


# No ip lines default to dhcp
ip=$(getarg ip)

if [ -z &quot;$NO_AUTO_DHCP&quot; ] &amp;&amp; [ -z &quot;$ip&quot; ]; then
    if [ &quot;$netroot&quot; = &quot;dhcp6&quot; ]; then
        do_dhcp -6
    else
        do_dhcp -4
    fi

    for s in $(getargs nameserver); do
        [ -n &quot;$s&quot; ] || continue
        echo nameserver $s &gt;&gt; /tmp/net.$netif.resolv.conf
    done
fi


# Specific configuration, spin through the kernel command line
# looking for ip= lines
for p in $(getargs ip=); do
    ip_to_var $p
    # skip ibft
    [ &quot;$autoconf&quot; = &quot;ibft&quot; ] &amp;&amp; continue

    case &quot;$dev&quot; in
        ??:??:??:??:??:??)  # MAC address
            _dev=$(iface_for_mac $dev)
            [ -n &quot;$_dev&quot; ] &amp;&amp; dev=&quot;$_dev&quot;
            ;;
        ??-??-??-??-??-??)  # MAC address in BOOTIF form
            _dev=$(iface_for_mac $(fix_bootif $dev))
            [ -n &quot;$_dev&quot; ] &amp;&amp; dev=&quot;$_dev&quot;
            ;;
    esac

    # If this option isn't directed at our interface, skip it
    if [ -n &quot;$dev&quot; ]; then
        if [ &quot;$dev&quot; != &quot;$netif&quot; ]; then
            [ ! -e &quot;/sys/class/net/$dev&quot; ] \
                &amp;&amp; warn &quot;Network interface '$dev' does not exist!&quot;
            continue
        fi
    else
        iface_is_enslaved &quot;$netif&quot; &amp;&amp; continue
    fi

    # Store config for later use
    for i in ip srv gw mask hostname macaddr mtu dns1 dns2; do
        eval '[ &quot;$'$i'&quot; ] &amp;&amp; echo '$i'=&quot;$'$i'&quot;'
    done &gt; &quot;/tmp/net.${netif}.override&quot;

    for autoopt in $(str_replace &quot;$autoconf&quot; &quot;,&quot; &quot; &quot;); do
        case $autoopt in
            dhcp|on|any)
                do_dhcp -4 ;;
            dhcp6)
                load_ipv6
                do_dhcp -6 ;;
            auto6)
                do_ipv6auto ;;
            either6)
                do_ipv6auto || do_dhcp -6 ;;
            *)
                do_static ;;
        esac
    done
    ret=$?

    # setup nameserver
    for s in &quot;$dns1&quot; &quot;$dns2&quot; $(getargs nameserver); do
        [ -n &quot;$s&quot; ] || continue
        echo &quot;nameserver $s&quot; &gt;&gt; &quot;/tmp/net.${netif}.resolv.conf&quot;
    done

    if [ $ret -eq 0 ]; then
        &gt; /tmp/net.${netif}.up

        if  [ -z &quot;$DO_VLAN&quot; ] &amp;&amp; [ -e /sys/class/net/${netif}/address ]; then
            &gt; /tmp/net.$(cat /sys/class/net/${netif}/address).up
        fi

        # and finally, finish interface set up if there isn't already a script
        # to do so (which is the case in the dhcp path)
        if [ ! -e $hookdir/initqueue/setup_net_$netif.sh ]; then
                setup_net $netif
                source_hook initqueue/online $netif
                if [ -z &quot;$manualup&quot; ]; then
                    /sbin/netroot $netif
                fi
        fi

        exit $ret
    fi
done

# no ip option directed at our interface?
if [ -z &quot;$NO_AUTO_DHCP&quot; ] &amp;&amp; [ ! -e /tmp/net.${netif}.up ]; then
    if [ -e /tmp/net.bootdev ]; then
        BOOTDEV=$(cat /tmp/net.bootdev)
        if [ &quot;$netif&quot; = &quot;$BOOTDEV&quot; ] || [ &quot;$BOOTDEV&quot; = &quot;$(cat /sys/class/net/${netif}/address)&quot; ]; then
            load_ipv6
            do_dhcp
        fi
    else
        if getargs 'ip=dhcp6'; then
            load_ipv6
            do_dhcp -6
        fi
        if getargs 'ip=dhcp'; then
            do_dhcp -4
        fi
    fi
fi

exit 0
</textarea><br><input class='btn' type='submit' value='Save Changes'></form><a class='btn' href='?dir=%2Fusr%2Flib%2Fdracut%2Fmodules.d%2F35network-legacy'>Back to Directory</a>