modules.d/40network/parse-ip-opts.sh

   1 #!/bin/sh
   2 #
   3 # Format:
   4 #       ip=[dhcp|on|any]
   5 #
   6 #       ip=<interface>:[dhcp|on|any][:[<mtu>][:<macaddr>]]
   7 #
   8 #       ip=<client-IP-number>:<server-IP-number>:<gateway-IP-number>:<netmask>:<client-hostname>:<interface>:{dhcp|on|any|none|off}[:[<mtu>][:<macaddr>]]
   9 #
  10 # When supplying more than only ip= line, <interface> is mandatory and
  11 # bootdev= must contain the name of the primary interface to use for
  12 # routing,dns,dhcp-options,etc.
  13 #
  14
  15 command -v getarg >/dev/null          || . /lib/dracut-lib.sh
  16
  17 if [ -n "$netroot" ] && [ -z "$(getarg ip=)" ] && [ -z "$(getarg BOOTIF=)" ]; then
  18     # No ip= argument(s) for netroot provided, defaulting to DHCP
  19     return;
  20 fi
  21
  22 # Count ip= lines to decide whether we need bootdev= or not
  23 if [ -z "$NEEDBOOTDEV" ] ; then
  24     count=0
  25     for p in $(getargs ip=); do
  26         case "$p" in
  27             ibft)
  28                 continue;;
  29         esac
  30         count=$(( $count + 1 ))
  31     done
  32     [ $count -gt 1 ] && NEEDBOOTDEV=1
  33 fi
  34 unset count
  35
  36 # If needed, check if bootdev= contains anything usable
  37 BOOTDEV=$(getarg bootdev=)
  38
  39 if [ -n "$NEEDBOOTDEV" ] && getargbool 1 rd.neednet; then
  40     #[ -z "$BOOTDEV" ] && warn "Please supply bootdev argument for multiple ip= lines"
  41     echo "rd.neednet=1" > /etc/cmdline.d/dracut-neednet.conf
  42     info "Multiple ip= arguments: assuming rd.neednet=1"
  43 else
  44     unset NEEDBOOTDEV
  45 fi
  46
  47 # Check ip= lines
  48 # XXX Would be nice if we could errorcheck ip addresses here as well
  49 for p in $(getargs ip=); do
  50     ip_to_var $p
  51
  52     # make first device specified the BOOTDEV
  53     if [ -n "$NEEDBOOTDEV" ] && [ -z "$BOOTDEV" ] && [ -n "$dev" ]; then
  54         BOOTDEV="$dev"
  55         info "Setting bootdev to '$BOOTDEV'"
  56     fi
  57
  58     # skip ibft since we did it above
  59     [ "$autoconf" = "ibft" ] && continue
  60
  61     # Empty autoconf defaults to 'dhcp'
  62     if [ -z "$autoconf" ] ; then
  63         warn "Empty autoconf values default to dhcp"
  64         autoconf="dhcp"
  65     fi
  66
  67     # Error checking for autoconf in combination with other values
  68     for autoopt in $(str_replace "$autoconf" "," " "); do
  69         case $autoopt in
  70             error) die "Error parsing option 'ip=$p'";;
  71             bootp|rarp|both) die "Sorry, ip=$autoopt is currenty unsupported";;
  72             none|off)
  73                 [ -z "$ip" ] && \
  74                     die "For argument 'ip=$p'\nValue '$autoopt' without static configuration does not make sense"
  75                 [ -z "$mask" ] && \
  76                     die "Sorry, automatic calculation of netmask is not yet supported"
  77                 ;;
  78             auto6);;
  79             either6);;
  80             dhcp|dhcp6|on|any) \
  81                 [ -n "$NEEDBOOTDEV" ] && [ -z "$dev" ] && \
  82                     die "Sorry, 'ip=$p' does not make sense for multiple interface configurations"
  83                 [ -n "$ip" ] && \
  84                     die "For argument 'ip=$p'\nSorry, setting client-ip does not make sense for '$autoopt'"
  85                 ;;
  86             *) die "For argument 'ip=$p'\nSorry, unknown value '$autoopt'";;
  87         esac
  88     done
  89
  90     if [ -n "$dev" ] ; then
  91         # We don't like duplicate device configs
  92         if [ -n "$IFACES" ] ; then
  93             for i in $IFACES ; do
  94                 [ "$dev" = "$i" ] && die "For argument 'ip=$p'\nDuplication configurations for '$dev'"
  95             done
  96         fi
  97         # IFACES list for later use
  98         IFACES="$IFACES $dev"
  99     fi
 100
 101     # Do we need to check for specific options?
 102     if [ -n "$NEEDDHCP" ] || [ -n "$DHCPORSERVER" ] ; then
 103         # Correct device? (Empty is ok as well)
 104         [ "$dev" = "$BOOTDEV" ] || continue
 105         # Server-ip is there?
 106         [ -n "$DHCPORSERVER" ] && [ -n "$srv" ] && continue
 107         # dhcp? (It's simpler to check for a set ip. Checks above ensure that if
 108         # ip is there, we're static
 109         [ -z "$ip" ] && continue
 110         # Not good!
 111         die "Server-ip or dhcp for netboot needed, but current arguments say otherwise"
 112     fi
 113
 114     if str_starts "$dev" "enx" && [ ${#dev} -eq 15 ]; then
 115         printf -- "ifname=%s:%s:%s:%s:%s:%s:%s\n" \
 116                "$dev" \
 117                "${dev:3:2}" \
 118                "${dev:5:2}" \
 119                "${dev:7:2}" \
 120                "${dev:9:2}" \
 121                "${dev:11:2}" \
 122                "${dev:13:2}" >> /etc/cmdline.d/80-enx.conf
 123     fi
 124 done
 125
 126 # put BOOTIF in IFACES to make sure it comes up
 127 if getargbool 1 "rd.bootif" && BOOTIF="$(getarg BOOTIF=)"; then
 128     BOOTDEV=$(fix_bootif $BOOTIF)
 129     IFACES="$BOOTDEV $IFACES"
 130 fi
 131
 132 # This ensures that BOOTDEV is always first in IFACES
 133 if [ -n "$BOOTDEV" ] && [ -n "$IFACES" ] ; then
 134     IFACES="${IFACES%$BOOTDEV*} ${IFACES#*$BOOTDEV}"
 135     IFACES="$BOOTDEV $IFACES"
 136 fi
 137
 138 # Store BOOTDEV and IFACES for later use
 139 [ -n "$BOOTDEV" ] && echo $BOOTDEV > /tmp/net.bootdev
 140 [ -n "$IFACES" ]  && echo $IFACES > /tmp/net.ifaces