#!/bin/sh

# Copyright (c) 2010 Theo de Raadt <deraadt@openbsd.org>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

D="\
  18000\
    256\
    400\
    800\
   1000\
   1024\
   2000\
   2200\
   2300\
   3000\
   3500\
   4000\
   4100\
   5000\
   6000\
   7000\
   8000\
   9000\
  90000\
  12000\
  20000\
  40000\
 300000\
 900000\
"

for i in $D; do
	vnconfig -u vnd0 > /dev/null 2>&1
	echo "${i}MB disk"
	rm -f /tmp/image f
	dd if=/dev/zero of=/tmp/image bs=1m count=1 seek=${i} > /dev/null 2>&1
	ls -lh /tmp/image
	vnconfig vnd0 /tmp/image
	fdisk -iy vnd0 > /dev/null
	(disklabel -A -p g vnd0; \
	 disklabel -Aw -f f vnd0; \
	 disklabel vnd0) | grep '^  [a-p]: ' \
	    | egrep -v "unused" | sort; cat f
	vnconfig -u vnd0 > /dev/null 2>&1
	read
done
vnconfig -u vnd0 > /dev/null 2>&1