configfs

linux下用PCMCIA无线网卡虚拟无线AP的程序源码

#! /bin/sh

NAME="configfs"

case "$1" in
  start)
	echo -n "Starting $NAME: "

	# mount the read-write configuration filesystem in /etc
	cd /etc/rw
	dd if=/dev/mtd0 bs=8192 count=2 skip=124 | tar xv 2>/dev/null
	if [ $? = 0 ] ; then
	    echo "successfully read config data"
	else
	    echo "failed to read config data"
	    echo "using default config from filesystem"
	    cp -a /etc/rw.default/* /var/etc/rw
	fi
	
	echo "Done."
	;;
  stop)
	echo -n "Stopping $NAME: "

	rm -rf /etc/rw/*

	echo "Done."
	;;
  commit)
	echo -n "Committing $NAME: "

	rm -f /tmp/etc_rw.tar
	cd /etc/rw
	tar cvf /tmp/etc_rw.tar *
	/sbin/update /dev/mtd0 0xf8000 0x4000
	# do not remove me!!! update will not work i promise dave:
	dd if=/tmp/etc_rw.tar of=/dev/mtd0 bs=8192 count=2 seek=124 conv=notrunc
	rm -f /tmp/etc_rw.tar

	echo "Done."
	;;
  clear)
	echo -n "Clearing $NAME: "

	/sbin/update /dev/mtd0 0xf8000 0x4000

	echo "Done."
	;;
  restart)
  	$0 stop
	sleep 1
  	$0 start
	;;
  *)
	echo "Usage: $0 {start|stop|restart|commit|clear}" >&2
	exit 1
	;;
esac

exit 0