qemu-nic

#!/bin/sh
#
# Run qemu with network interface if root.
#
# TODO:
#    -s for gdb from command line

QEMUDIR=/home/joel

fatal()
{
  echo $*
  echo "Usage: [-v] [-n NIC]"
  echo ""
  echo "Supported NICs: e1000 i82559er i82551 i82557b rtl8139 ne2k_isa"
  exit 1
}

nic="none"
verbose="no"

while getopts "vn:" OPT
do
 case "$OPT" in
   v) verbose="yes";;
   n) nic="$OPTARG";;
   *) fatal;;
 esac
done

shiftcount=`expr $OPTIND - 1`
shift $shiftcount

args=$*

GRAPHICS="-serial stdio"
#GRAPHICS="${GRAPHICS} --nographic --monitor null"

# Model - isapc for ISA PC or pc for PCI
MODEL="-M pc"
NIC=

case ${nic} in
  # PCI NIC model options that work with RTEMS:
  #   fxp: i82559er, i82551, i82557b
  #   rl:  rtl8139
  #   em:  e1000
  e1000|i82559er|i82551|i82557b|rtl8139) NIC=${nic};;
  # ISA NIC model: ne2k_isa
  ne2k_isa) MODEL="-M isapc" ; NIC=${nic} ;;
  none) ;;
  *)
     fatal Unknown NIC ${nic}
     ;;
esac
 
ARGS="${MODEL} -m 128 \
    -boot a -fda ${QEMUDIR}/qemu/pc386_fda \
    -hda fat:${QEMUDIR}/qemu/hd  --no-reboot"
if [ ${nic} != "none" ] ; then
  if [ $EUID -eq 0 ] ; then
    NICARGS="\
      -net nic,model=${NIC} \
      -net nic,macaddr=00:80:7F:22:61:77 \
      -net tap,script=/etc/qemu-ifup"
  else
     echo "*** You are not root -- ignoring request for NIC ***"
  fi

  if [ ! -r /etc/qemu-ifup ] ; then
    echo /etc/qemu-ifup not found
    exit 1
  fi

  qemu ${ARGS} ${GRAPHICS} ${NICARGS}
else
  qemu ${ARGS} ${GRAPHICS}
fi

exit 0