modules.d/45ifcfg/write-ifcfg.sh

   1 #!/bin/sh
   2
   3 # NFS root might have reached here before /tmp/net.ifaces was written
   4 type is_persistent_ethernet_name > /dev/null 2>&1 || . /lib/net-lib.sh
   5
   6 udevadm settle --timeout=30
   7
   8 # shellcheck disable=SC2174
   9 mkdir -m 0755 -p /tmp/ifcfg/
  10 # shellcheck disable=SC2174
  11 mkdir -m 0755 -p /tmp/ifcfg-leases/
  12
  13 get_config_line_by_subchannel() {
  14     local CHANNELS
  15     local line
  16
  17     CHANNELS="$1"
  18     while read -r line || [ -n "$line" ]; do
  19         if strstr "$line" "$CHANNELS"; then
  20             echo "$line"
  21             return 0
  22         fi
  23     done < /etc/ccw.conf
  24     return 1
  25 }
  26
  27 print_s390() {
  28     local _netif
  29     local SUBCHANNELS
  30     local OPTIONS
  31     local NETTYPE
  32     local CONFIG_LINE
  33     local i
  34     local channel
  35     local OLD_IFS
  36
  37     _netif="$1"
  38     # if we find ccw channel, then use those, instead of
  39     # of the MAC
  40     SUBCHANNELS=$({
  41         for i in /sys/class/net/"$_netif"/device/cdev[0-9]*; do
  42             [ -e "$i" ] || continue
  43             channel=$(readlink -f "$i")
  44             printf '%s' "${channel##*/},"
  45         done
  46     })
  47     [ -n "$SUBCHANNELS" ] || return 1
  48
  49     SUBCHANNELS=${SUBCHANNELS%,}
  50     echo "SUBCHANNELS=\"${SUBCHANNELS}\""
  51
  52     CONFIG_LINE=$(get_config_line_by_subchannel "$SUBCHANNELS")
  53     # shellcheck disable=SC2181
  54     [ $? -ne 0 -o -z "$CONFIG_LINE" ] && return 0
  55
  56     OLD_IFS=$IFS
  57     IFS=","
  58     # shellcheck disable=SC2086
  59     set -- $CONFIG_LINE
  60     IFS=$OLD_IFS
  61     NETTYPE=$1
  62     shift
  63     SUBCHANNELS="$1"
  64     OPTIONS=""
  65     shift
  66     while [ $# -gt 0 ]; do
  67         case $1 in
  68             *=*) OPTIONS="$OPTIONS $1" ;;
  69         esac
  70         shift
  71     done
  72     OPTIONS=${OPTIONS## }
  73     echo "NETTYPE=\"${NETTYPE}\""
  74     echo "OPTIONS=\"${OPTIONS}\""
  75     return 0
  76 }
  77
  78 hw_bind() {
  79     local _netif="$1"
  80     local _macaddr="$2"
  81
  82     [ -n "$_macaddr" ] \
  83         && echo "MACADDR=\"$_macaddr\""
  84
  85     print_s390 "$_netif" \
  86         && return 0
  87
  88     [ -n "$_macaddr" ] && return 0
  89
  90     is_persistent_ethernet_name "$_netif" && return 0
  91
  92     [ -f "/sys/class/net/$_netif/addr_assign_type" ] \
  93         && [ "$(cat "/sys/class/net/$_netif/addr_assign_type")" != "0" ] \
  94         && return 1
  95
  96     [ -f "/sys/class/net/$_netif/address" ] \
  97         || return 1
  98
  99     echo "HWADDR=\"$(cat /sys/class/net/"$_netif"/address)\""
 100 }
 101
 102 interface_bind() {
 103     local _netif="$1"
 104     local _macaddr="$2"
 105
 106     if [ ! -e "/sys/class/net/$_netif" ]; then
 107         warn "Cannot find network interface '$_netif'!"
 108         return 1
 109     fi
 110
 111     # see, if we can bind it to some hw parms
 112     if hw_bind "$_netif" "$_macaddr"; then
 113         # only print out DEVICE, if it's user assigned
 114         is_kernel_ethernet_name "$_netif" && return 0
 115     fi
 116
 117     echo "DEVICE=\"$_netif\""
 118 }
 119
 120 for netup in /tmp/net.*.did-setup; do
 121     [ -f "$netup" ] || continue
 122
 123     netif=${netup%%.did-setup}
 124     netif=${netif##*/net.}
 125     strglobin "$netif" ":*:*:*:*:" && continue
 126     [ -e /tmp/ifcfg/ifcfg-"$netif" ] && continue
 127     unset bridge
 128     unset bond
 129     unset bondslaves
 130     unset bondname
 131     unset bondoptions
 132     unset bridgename
 133     unset bridgeslaves
 134     unset team
 135     unset uuid
 136     unset ip
 137     unset gw
 138     unset mtu
 139     unset mask
 140     unset macaddr
 141     unset slave
 142     unset ethname
 143     unset vlan
 144     unset vlanname
 145     unset phydevice
 146
 147     # shellcheck disable=SC1090
 148     [ -e /tmp/bond."${netif}".info ] && . /tmp/bond."${netif}".info
 149     # shellcheck disable=SC1090
 150     [ -e /tmp/bridge."${netif}".info ] && . /tmp/bridge."${netif}".info
 151     # shellcheck disable=SC1090
 152     [ -e /tmp/team."${netif}".info ] && . /tmp/team."${netif}".info
 153
 154     read -r uuid < /proc/sys/kernel/random/uuid
 155     if [ "$netif" = "$bridgename" ]; then
 156         bridge=yes
 157     elif [ "$netif" = "$teammaster" ]; then
 158         team=yes
 159     elif [ "$netif" = "$bondname" ]; then
 160         # $netif can't be bridge and bond at the same time
 161         bond=yes
 162     fi
 163
 164     for i in "/tmp/vlan.${netif}."*; do
 165         [ ! -e "$i" ] && continue
 166         # shellcheck disable=SC1090
 167         . "$i"
 168         vlan=yes
 169         break
 170     done
 171
 172     # skip team interfaces for now, the host config must be in sync
 173     [ "$netif" = "$teammaster" ] && continue
 174
 175     {
 176         echo "# Generated by dracut initrd"
 177         echo "NAME=\"$netif\""
 178         [ -z "$vlan" ] && interface_bind "$netif" "$macaddr"
 179         echo "ONBOOT=yes"
 180         echo "NETBOOT=yes"
 181         echo "UUID=\"$uuid\""
 182         strstr "$(ip -6 addr show dev "$netif")" 'inet6' && echo "IPV6INIT=yes"
 183         if [ -f /tmp/dhclient."$netif".lease ]; then
 184             # shellcheck disable=SC1090
 185             [ -f /tmp/dhclient."$netif".dhcpopts ] && . /tmp/dhclient."$netif".dhcpopts
 186             if [ -f /tmp/net."$netif".has_ibft_config ]; then
 187                 echo "BOOTPROTO=ibft"
 188             else
 189                 echo "BOOTPROTO=dhcp"
 190             fi
 191             cp /tmp/dhclient."$netif".lease /tmp/ifcfg-leases/dhclient-"$uuid"-"$netif".lease
 192         else
 193             # If we've booted with static ip= lines, the override file is there
 194             # shellcheck disable=SC1090
 195             [ -e /tmp/net."$netif".override ] && . /tmp/net."$netif".override
 196             if strglobin "$ip" '*:*:*'; then
 197                 echo "IPV6INIT=yes"
 198                 echo "IPV6_AUTOCONF=no"
 199                 echo "IPV6ADDR=\"$ip/$mask\""
 200             else
 201                 if [ -f /tmp/net."$netif".has_ibft_config ]; then
 202                     echo "BOOTPROTO=ibft"
 203                 else
 204                     echo "BOOTPROTO=none"
 205                     echo "IPADDR=\"$ip\""
 206                     if strstr "$mask" "."; then
 207                         echo "NETMASK=\"$mask\""
 208                     else
 209                         echo "PREFIX=\"$mask\""
 210                     fi
 211                 fi
 212             fi
 213             if strglobin "$gw" '*:*:*'; then
 214                 echo "IPV6_DEFAULTGW=\"$gw\""
 215             elif [ -n "$gw" ]; then
 216                 echo "GATEWAY=\"$gw\""
 217             fi
 218         fi
 219         [ -n "$mtu" ] && echo "MTU=\"$mtu\""
 220     } > /tmp/ifcfg/ifcfg-"$netif"
 221
 222     # bridge needs different things written to ifcfg
 223     if [ -z "$bridge" ] && [ -z "$bond" ] && [ -z "$vlan" ] && [ -z "$team" ]; then
 224         # standard interface
 225         echo "TYPE=Ethernet" >> /tmp/ifcfg/ifcfg-"$netif"
 226     fi
 227
 228     if [ -n "$vlan" ]; then
 229         {
 230             echo "TYPE=Vlan"
 231             echo "DEVICE=\"$netif\""
 232             echo "VLAN=yes"
 233             echo "PHYSDEV=\"$phydevice\""
 234         } >> /tmp/ifcfg/ifcfg-"$netif"
 235     fi
 236
 237     if [ -n "$bond" ]; then
 238         # bond interface
 239         {
 240             # This variable is an indicator of a bond interface for initscripts
 241             echo "BONDING_OPTS=\"$bondoptions\""
 242             echo "NAME=\"$netif\""
 243             echo "TYPE=Bond"
 244         } >> /tmp/ifcfg/ifcfg-"$netif"
 245
 246         for slave in $bondslaves; do
 247             # write separate ifcfg file for the raw eth interface
 248             (
 249                 echo "# Generated by dracut initrd"
 250                 echo "NAME=\"$slave\""
 251                 echo "TYPE=Ethernet"
 252                 echo "ONBOOT=yes"
 253                 echo "NETBOOT=yes"
 254                 echo "SLAVE=yes"
 255                 echo "MASTER=\"$netif\""
 256                 echo "UUID=\"$(cat /proc/sys/kernel/random/uuid)\""
 257                 unset macaddr
 258                 # shellcheck disable=SC1090
 259                 [ -e /tmp/net."$slave".override ] && . /tmp/net."$slave".override
 260                 interface_bind "$slave" "$macaddr"
 261             ) >> /tmp/ifcfg/ifcfg-"$slave"
 262         done
 263     fi
 264
 265     if [ -n "$bridge" ]; then
 266         # bridge
 267         {
 268             echo "TYPE=Bridge"
 269             echo "NAME=\"$netif\""
 270         } >> /tmp/ifcfg/ifcfg-"$netif"
 271         for slave in $bridgeslaves; do
 272             # write separate ifcfg file for the raw eth interface
 273             (
 274                 echo "# Generated by dracut initrd"
 275                 echo "NAME=\"$slave\""
 276                 echo "TYPE=Ethernet"
 277                 echo "ONBOOT=yes"
 278                 echo "NETBOOT=yes"
 279                 echo "BRIDGE=\"$bridgename\""
 280                 echo "UUID=\"$(cat /proc/sys/kernel/random/uuid)\""
 281                 unset macaddr
 282                 # shellcheck disable=SC1090
 283                 [ -e /tmp/net."$slave".override ] && . /tmp/net."$slave".override
 284                 interface_bind "$slave" "$macaddr"
 285             ) >> /tmp/ifcfg/ifcfg-"$slave"
 286         done
 287     fi
 288     i=1
 289     for ns in $(getargs nameserver) $dns1 $dns2; do
 290         echo "DNS${i}=\"${ns}\"" >> /tmp/ifcfg/ifcfg-"$netif"
 291         i=$((i + 1))
 292     done
 293
 294     [ -f /tmp/net.route6."$netif" ] && cp /tmp/net.route6."$netif" /tmp/ifcfg/route6-"$netif"
 295     [ -f /tmp/net.route."$netif" ] && cp /tmp/net.route."$netif" /tmp/ifcfg/route-"$netif"
 296 done
 297
 298 # Pass network opts
 299 mkdir -m 0755 -p /run/initramfs/state/etc/sysconfig/network-scripts
 300 mkdir -m 0755 -p /run/initramfs/state/var/lib/dhclient
 301 echo "files /etc/sysconfig/network-scripts" >> /run/initramfs/rwtab
 302 echo "files /var/lib/dhclient" >> /run/initramfs/rwtab
 303 {
 304     cp /tmp/net.* /run/initramfs/
 305     for i in /tmp/net.*.resolv.conf; do
 306         [ -f "$i" ] && cat "$i"
 307     done | awk '!($0 in a) { a[$0]; print }' > /run/initramfs/state/etc/resolv.conf
 308     [ -s /run/initramfs/state/etc/resolv.conf ] || rm -f /run/initramfs/state/etc/resolv.conf
 309     copytree /tmp/ifcfg /run/initramfs/state/etc/sysconfig/network-scripts
 310     cp /tmp/ifcfg-leases/* /run/initramfs/state/var/lib/dhclient
 311 } > /dev/null 2>&1