New option to allow changing interface flags.

[unet] / makedev.unet.in

#! /bin/sh
#
# $Id: makedev.unet.in,v 1.1 2001/01/25 22:03:39 mdw Exp $
#
# Make usernet devices
#
# (c) 1998 Mark Wooding
#

#----- Licensing notice -----------------------------------------------------
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

#----- Revision history -----------------------------------------------------
#
# $Id: makedev.unet.in,v 1.1 2001/01/25 22:03:39 mdw Exp $

# --- Configuration stuff ---

unet_major=@MAJORDEV@
unet_transMinor=@TRANSMINOR@
unet_persistent=@NPERSIST@
unet_mode=600

# --- Sanity check ---

case `uname -s` in
  [Ll]inux) ;;
  *)
    echo >&2 "$0: this program is Linux-specific" ;;
esac

# --- Sort out command line arguments ---

while [ $# -gt 0 ]; do
  opt="$1"; shift;
  case "$opt" in

    # --- Help requests ---

    -h|-he|-hel|-help | --h|--he|--hel|--help)
      cat <<EOF
makedev.unet [OPTIONS...]

Constructs usernet device nodes.

The usernet device allows userspace processes to process and distribute
network packets.  See the Usernet manual for more details.

Options provided:

    --help		Display this help text.
-p, --persistent=NUM	Configure NUM persistent unet devices.
-t, --transient=NUM	Use minor device NUM for transient unets.
-M, --major=NUM		Use major device NUM instead of $unet_major.
EOF
      exit
      ;;

    # --- Set number of persistent devices ---

    -p | --p|--pe|--per|--pers|--persi|--persis|--persist|\
    --persiste|--persisten|--persistent)
      unet_persistent="$1"; shift ;;

    -p*)
      unet_persistent="`echo "$opt" | cut -b 3-`" ;;

    --p=*|--pe=*|--per=*|--pers=*|--persi=*|--persis=*|--persist=*|\
    --persiste=*|--persisten=*|--persistent=*)
      unet_persistent="`echo "$opt" | sed -e "s/^[-a-z]*=//"`" ;;

    # --- Set transient minor device ---

    -t | --t|--tr|--tra|--tran|--trans|--transi|--transie|\
    --transien|--transient)
      unet_transMinor="$1"; shift ;;

    -t*)
      unet_transMinor="`echo "$opt" | cut -b 3-`" ;;

    --t=*|--tr=*|--tra=*|--tran=*|--trans=*|--transi=*|--transie=*|\
    --transien=*|--transient=*)
      unet_transMinor="`echo "$opt" | sed -e "s/^[-a-z]*=//"`" ;;

    # --- Set major number (caution!) ---

    -M | --ma|--maj|--majo|--major)
      unet_major="$1"; shift ;;

    -M*)
      unet_major="`echo "$opt" | cut -b 3-`" ;;

    --ma=*|--maj=*|--majo=*|--major=*)
      unet_major="`echo "$opt" | sed -e "s/^[-a-z]*=//"`" ;;

    # --- Set default mode ---

    -m | --m|--mo|--mod|--mode)
      unet_mode="$1"; shift ;;

    -m*)
      unet_mode="`echo "$opt" | cut -b 3-`" ;;

    --m=*|--mo=*|--mod=*|--mode=*)
      unet_mode="`echo "$opt" | sed -e "s/^[-a-z]*=//"`" ;;

    # --- Unknown option ---

    *)
      echo >&2 "$0: unknown option $opt"; exit 1 ;;

  esac
done

# --- Do the stuff ---

rm -f /dev/unet*
if [ "$unet_persistent" -gt 0 ]; then
  i=0
  while [ "$i" -lt "$unet_persistent" ]; do
    mknod -m "$unet_mode" /dev/unet$i c "$unet_major" $i
    i=`expr $i + 1`
  done
fi
mknod -m "$unet_mode" /dev/unet c "$unet_major" "$unet_transMinor"

exit 0