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1#@!#!123s
: / proc / thread-self / root / lib / dracut / modules.d / 45ifcfg /
Filename : write-ifcfg.sh
back
#!/usr/bin/sh

# NFS root might have reached here before /tmp/net.ifaces was written
type is_persistent_ethernet_name > /dev/null 2>&1 || . /lib/net-lib.sh

udevadm settle --timeout=30

# shellcheck disable=SC2174
mkdir -m 0755 -p /tmp/ifcfg/
# shellcheck disable=SC2174
mkdir -m 0755 -p /tmp/ifcfg-leases/

get_config_line_by_subchannel() {
    local CHANNELS
    local line

    CHANNELS="$1"
    while read -r line || [ -n "$line" ]; do
        if strstr "$line" "$CHANNELS"; then
            echo "$line"
            return 0
        fi
    done < /etc/ccw.conf
    return 1
}

print_s390() {
    local _netif
    local SUBCHANNELS
    local OPTIONS
    local NETTYPE
    local CONFIG_LINE
    local i
    local channel
    local OLD_IFS

    _netif="$1"
    # if we find ccw channel, then use those, instead of
    # of the MAC
    SUBCHANNELS=$({
        for i in /sys/class/net/"$_netif"/device/cdev[0-9]*; do
            [ -e "$i" ] || continue
            channel=$(readlink -f "$i")
            printf '%s' "${channel##*/},"
        done
    })
    [ -n "$SUBCHANNELS" ] || return 1

    SUBCHANNELS=${SUBCHANNELS%,}
    echo "SUBCHANNELS=\"${SUBCHANNELS}\""

    CONFIG_LINE=$(get_config_line_by_subchannel "$SUBCHANNELS")
    # shellcheck disable=SC2181
    [ $? -ne 0 -o -z "$CONFIG_LINE" ] && return 0

    OLD_IFS=$IFS
    IFS=","
    # shellcheck disable=SC2086
    set -- $CONFIG_LINE
    IFS=$OLD_IFS
    NETTYPE=$1
    shift
    SUBCHANNELS="$1"
    OPTIONS=""
    shift
    while [ $# -gt 0 ]; do
        case $1 in
            *=*) OPTIONS="$OPTIONS $1" ;;
        esac
        shift
    done
    OPTIONS=${OPTIONS## }
    echo "NETTYPE=\"${NETTYPE}\""
    echo "OPTIONS=\"${OPTIONS}\""
    return 0
}

hw_bind() {
    local _netif="$1"
    local _macaddr="$2"

    [ -n "$_macaddr" ] \
        && echo "MACADDR=\"$_macaddr\""

    print_s390 "$_netif" \
        && return 0

    [ -n "$_macaddr" ] && return 0

    is_persistent_ethernet_name "$_netif" && return 0

    [ -f "/sys/class/net/$_netif/addr_assign_type" ] \
        && [ "$(cat "/sys/class/net/$_netif/addr_assign_type")" != "0" ] \
        && return 1

    [ -f "/sys/class/net/$_netif/address" ] \
        || return 1

    echo "HWADDR=\"$(cat /sys/class/net/"$_netif"/address)\""
}

interface_bind() {
    local _netif="$1"
    local _macaddr="$2"

    if [ ! -e "/sys/class/net/$_netif" ]; then
        warn "Cannot find network interface '$_netif'!"
        return 1
    fi

    # see, if we can bind it to some hw parms
    if hw_bind "$_netif" "$_macaddr"; then
        # only print out DEVICE, if it's user assigned
        is_kernel_ethernet_name "$_netif" && return 0
    fi

    echo "DEVICE=\"$_netif\""
}

for netup in /tmp/net.*.did-setup; do
    [ -f "$netup" ] || continue

    netif=${netup%%.did-setup}
    netif=${netif##*/net.}
    strglobin "$netif" ":*:*:*:*:" && continue
    [ -e /tmp/ifcfg/ifcfg-"$netif" ] && continue
    unset bridge
    unset bond
    unset bondslaves
    unset bondname
    unset bondoptions
    unset bridgename
    unset bridgeslaves
    unset team
    unset uuid
    unset ip
    unset gw
    unset mtu
    unset mask
    unset macaddr
    unset slave
    unset ethname
    unset vlan
    unset vlanname
    unset phydevice

    # shellcheck disable=SC1090
    [ -e /tmp/bond."${netif}".info ] && . /tmp/bond."${netif}".info
    # shellcheck disable=SC1090
    [ -e /tmp/bridge."${netif}".info ] && . /tmp/bridge."${netif}".info
    # shellcheck disable=SC1090
    [ -e /tmp/team."${netif}".info ] && . /tmp/team."${netif}".info

    uuid=$(cat /proc/sys/kernel/random/uuid)
    if [ "$netif" = "$bridgename" ]; then
        bridge=yes
    elif [ "$netif" = "$teammaster" ]; then
        team=yes
    elif [ "$netif" = "$bondname" ]; then
        # $netif can't be bridge and bond at the same time
        bond=yes
    fi

    for i in "/tmp/vlan.${netif}."*; do
        [ ! -e "$i" ] && continue
        # shellcheck disable=SC1090
        . "$i"
        vlan=yes
        break
    done

    # skip team interfaces for now, the host config must be in sync
    [ "$netif" = "$teammaster" ] && continue

    {
        echo "# Generated by dracut initrd"
        echo "NAME=\"$netif\""
        [ -z "$vlan" ] && interface_bind "$netif" "$macaddr"
        echo "ONBOOT=yes"
        echo "NETBOOT=yes"
        echo "UUID=\"$uuid\""
        strstr "$(ip -6 addr show dev "$netif")" 'inet6' && echo "IPV6INIT=yes"
        if [ -f /tmp/dhclient."$netif".lease ]; then
            # shellcheck disable=SC1090
            [ -f /tmp/dhclient."$netif".dhcpopts ] && . /tmp/dhclient."$netif".dhcpopts
            if [ -f /tmp/net."$netif".has_ibft_config ]; then
                echo "BOOTPROTO=ibft"
            else
                echo "BOOTPROTO=dhcp"
            fi
            cp /tmp/dhclient."$netif".lease /tmp/ifcfg-leases/dhclient-"$uuid"-"$netif".lease
        else
            # If we've booted with static ip= lines, the override file is there
            # shellcheck disable=SC1090
            [ -e /tmp/net."$netif".override ] && . /tmp/net."$netif".override
            if strglobin "$ip" '*:*:*'; then
                echo "IPV6INIT=yes"
                echo "IPV6_AUTOCONF=no"
                echo "IPV6ADDR=\"$ip/$mask\""
            else
                if [ -f /tmp/net."$netif".has_ibft_config ]; then
                    echo "BOOTPROTO=ibft"
                else
                    echo "BOOTPROTO=none"
                    echo "IPADDR=\"$ip\""
                    if strstr "$mask" "."; then
                        echo "NETMASK=\"$mask\""
                    else
                        echo "PREFIX=\"$mask\""
                    fi
                fi
            fi
            if strglobin "$gw" '*:*:*'; then
                echo "IPV6_DEFAULTGW=\"$gw\""
            elif [ -n "$gw" ]; then
                echo "GATEWAY=\"$gw\""
            fi
        fi
        [ -n "$mtu" ] && echo "MTU=\"$mtu\""
    } > /tmp/ifcfg/ifcfg-"$netif"

    # bridge needs different things written to ifcfg
    if [ -z "$bridge" ] && [ -z "$bond" ] && [ -z "$vlan" ] && [ -z "$team" ]; then
        # standard interface
        echo "TYPE=Ethernet" >> /tmp/ifcfg/ifcfg-"$netif"
    fi

    if [ -n "$vlan" ]; then
        {
            echo "TYPE=Vlan"
            echo "DEVICE=\"$netif\""
            echo "VLAN=yes"
            echo "PHYSDEV=\"$phydevice\""
        } >> /tmp/ifcfg/ifcfg-"$netif"
    fi

    if [ -n "$bond" ]; then
        # bond interface
        {
            # This variable is an indicator of a bond interface for initscripts
            echo "BONDING_OPTS=\"$bondoptions\""
            echo "NAME=\"$netif\""
            echo "TYPE=Bond"
        } >> /tmp/ifcfg/ifcfg-"$netif"

        for slave in $bondslaves; do
            # write separate ifcfg file for the raw eth interface
            (
                echo "# Generated by dracut initrd"
                echo "NAME=\"$slave\""
                echo "TYPE=Ethernet"
                echo "ONBOOT=yes"
                echo "NETBOOT=yes"
                echo "SLAVE=yes"
                echo "MASTER=\"$netif\""
                echo "UUID=\"$(cat /proc/sys/kernel/random/uuid)\""
                unset macaddr
                # shellcheck disable=SC1090
                [ -e /tmp/net."$slave".override ] && . /tmp/net."$slave".override
                interface_bind "$slave" "$macaddr"
            ) >> /tmp/ifcfg/ifcfg-"$slave"
        done
    fi

    if [ -n "$bridge" ]; then
        # bridge
        {
            echo "TYPE=Bridge"
            echo "NAME=\"$netif\""
        } >> /tmp/ifcfg/ifcfg-"$netif"
        for slave in $bridgeslaves; do
            # write separate ifcfg file for the raw eth interface
            (
                echo "# Generated by dracut initrd"
                echo "NAME=\"$slave\""
                echo "TYPE=Ethernet"
                echo "ONBOOT=yes"
                echo "NETBOOT=yes"
                echo "BRIDGE=\"$bridgename\""
                echo "UUID=\"$(cat /proc/sys/kernel/random/uuid)\""
                unset macaddr
                # shellcheck disable=SC1090
                [ -e /tmp/net."$slave".override ] && . /tmp/net."$slave".override
                interface_bind "$slave" "$macaddr"
            ) >> /tmp/ifcfg/ifcfg-"$slave"
        done
    fi
    i=1
    for ns in $(getargs nameserver) $dns1 $dns2; do
        echo "DNS${i}=\"${ns}\"" >> /tmp/ifcfg/ifcfg-"$netif"
        i=$((i + 1))
    done

    [ -f /tmp/net.route6."$netif" ] && cp /tmp/net.route6."$netif" /tmp/ifcfg/route6-"$netif"
    [ -f /tmp/net.route."$netif" ] && cp /tmp/net.route."$netif" /tmp/ifcfg/route-"$netif"
done

# Pass network opts
mkdir -m 0755 -p /run/initramfs/state/etc/sysconfig/network-scripts
mkdir -m 0755 -p /run/initramfs/state/var/lib/dhclient
echo "files /etc/sysconfig/network-scripts" >> /run/initramfs/rwtab
echo "files /var/lib/dhclient" >> /run/initramfs/rwtab
{
    cp /tmp/net.* /run/initramfs/
    for i in /tmp/net.*.resolv.conf; do
        [ -f "$i" ] && cat "$i"
    done | awk '!($0 in a) { a[$0]; print }' > /run/initramfs/state/etc/resolv.conf
    [ -s /run/initramfs/state/etc/resolv.conf ] || rm -f /run/initramfs/state/etc/resolv.conf
    copytree /tmp/ifcfg /run/initramfs/state/etc/sysconfig/network-scripts
    cp /tmp/ifcfg-leases/* /run/initramfs/state/var/lib/dhclient
} > /dev/null 2>&1