187 lines
5.2 KiB
Bash
187 lines
5.2 KiB
Bash
#!/bin/sh
|
|
#
|
|
# $NetBSD: buildfloppies.sh,v 1.1 2002/04/16 04:28:23 lukem Exp $
|
|
#
|
|
# Copyright (c) 2002 The NetBSD Foundation, Inc.
|
|
# All rights reserved.
|
|
#
|
|
# This code is derived from software contributed to The NetBSD Foundation
|
|
# by Luke Mewburn of Wasabi Systems.
|
|
#
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions
|
|
# are met:
|
|
# 1. Redistributions of source code must retain the above copyright
|
|
# notice, this list of conditions and the following disclaimer.
|
|
# 2. Redistributions in binary form must reproduce the above copyright
|
|
# notice, this list of conditions and the following disclaimer in the
|
|
# documentation and/or other materials provided with the distribution.
|
|
# 3. All advertising materials mentioning features or use of this software
|
|
# must display the following acknowledgement:
|
|
# This product includes software developed by the NetBSD
|
|
# Foundation, Inc. and its contributors.
|
|
# 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
# contributors may be used to endorse or promote products derived
|
|
# from this software without specific prior written permission.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
# POSSIBILITY OF SUCH DAMAGE.
|
|
#
|
|
|
|
# set defaults
|
|
#
|
|
: ${PAX=pax}
|
|
prog=${0##*/}
|
|
|
|
|
|
usage()
|
|
{
|
|
cat 1>&2 << _USAGE_
|
|
Usage: ${prog} [-i instboot] [-m max] [-p] base size file [...]
|
|
-i instboot run instboot to install a bootstrap on @IMAGE@
|
|
-m max maximum number of floppies to build
|
|
-p pad last floppy to floppy size
|
|
base basename of generated floppies
|
|
size size of a floppy in 512 byte blocks
|
|
file [...] file(s) to build
|
|
_USAGE_
|
|
exit 1
|
|
}
|
|
|
|
plural()
|
|
{
|
|
[ $1 -ne 1 ] && echo "s"
|
|
}
|
|
|
|
|
|
# parse and check arguments
|
|
#
|
|
|
|
while getopts i:m:p opt; do
|
|
case ${opt} in
|
|
i)
|
|
instboot=${OPTARG} ;;
|
|
m)
|
|
maxdisks=${OPTARG} ;;
|
|
p)
|
|
pad=1 ;;
|
|
\?|*)
|
|
usage
|
|
;;
|
|
esac
|
|
done
|
|
|
|
shift $(( ${OPTIND} - 1 ))
|
|
[ $# -lt 3 ] && usage
|
|
floppybase=$1
|
|
floppysize=$2
|
|
shift 2
|
|
files=$*
|
|
|
|
# setup temp file, remove existing images
|
|
#
|
|
floppy=floppy.$$.tar
|
|
trap "rm -f ${floppy}" 0 1 2 3 # EXIT HUP INT QUIT
|
|
rm -f ${floppybase}?.fs
|
|
|
|
|
|
# create tar file
|
|
#
|
|
dd if=/dev/zero of=${floppy} bs=8k count=1 2>/dev/null
|
|
${PAX} -w ${files} >> ${floppy} || exit 1
|
|
# XXX: use pax metafile and set perms?
|
|
if [ -n "$instboot" ]; then
|
|
instboot=$( echo $instboot | sed -e s/@IMAGE@/${floppy}/ )
|
|
echo "Running instboot: ${instboot}"
|
|
eval ${instboot}
|
|
fi
|
|
|
|
# check size against available number of disks
|
|
#
|
|
set -- `ls -l ${floppy}`
|
|
bytes=$5
|
|
blocks=$(( ${bytes} / 512 ))
|
|
numdisks=$(( (${blocks} - 1) / ${floppysize} + 1 ))
|
|
if [ -z "${maxdisks}" ]; then
|
|
maxdisks=${numdisks}
|
|
fi
|
|
|
|
if [ ${numdisks} -gt ${maxdisks} ]; then
|
|
excess=$(( ( ${blocks} - ${floppysize} * ${maxdisks} ) * 512 ))
|
|
echo 1>&2 \
|
|
"$prog: Image is ${excess} bytes ($(( ${excess} / 1024 )) KB)"\
|
|
"too big to fit on ${maxdisks} disk"$(plural ${maxdisks})
|
|
exit 1
|
|
fi
|
|
|
|
if [ -n "${pad}" ]; then
|
|
padsize=$(( ${floppysize} * ${maxdisks} ))
|
|
padcount=$(( ${padsize} - ${blocks} ))
|
|
echo \
|
|
"Writing $(( ${padsize} * 512 )) bytes ($(( ${padsize} / 2 )) KB)" \
|
|
"on ${numdisks} disk"$(plural ${numdisks})"," \
|
|
"padded by $(( ${padcount} * 512 )) bytes" \
|
|
"($(( ${padcount} / 2 )) KB)"
|
|
else
|
|
echo "Writing ${bytes} bytes ($(( ${blocks} / 2 )) KB)"\
|
|
"on ${numdisks} disk"$(plural ${numdisks})
|
|
fi
|
|
|
|
# write disks
|
|
#
|
|
curdisk=1
|
|
image=
|
|
floppysize8k=$(( ${floppysize} / 16 ))
|
|
while [ ${curdisk} -le ${numdisks} ]; do
|
|
image="${floppybase}${curdisk}.fs"
|
|
echo "Creating disk ${curdisk} to ${image}"
|
|
if [ ${curdisk} -eq 1 ]; then
|
|
seek=0
|
|
skip=0
|
|
: > ${image}
|
|
else
|
|
seek=1
|
|
skip=$(( (${curdisk} - 1) * (${floppysize8k} - 1) + 1 ))
|
|
echo USTARFS ${curdisk} > ${image}
|
|
fi
|
|
count=$(( ${floppysize8k} - ${seek} ))
|
|
# echo 1>&2 " DEBUG: disk ${curdisk} seek=${seek} skip=${skip} count=${count}"
|
|
dd bs=8k conv=sync seek=${seek} skip=${skip} count=${count} \
|
|
if=${floppy} of=${image} 2>/dev/null
|
|
|
|
curdisk=$(( ${curdisk} + 1 ))
|
|
done
|
|
|
|
#
|
|
# XXX: the old bootfloppy generation code used to zero the last 0.5k of the
|
|
# end of the image in single disk configs; that possibly trashed real
|
|
# data???
|
|
# is that functionality still required?
|
|
#
|
|
|
|
# pad last disk if necessary
|
|
#
|
|
if [ -n "${pad}" ]; then
|
|
padseek=$(( ${floppysize} - ${padcount} ))
|
|
# echo 1>&2 " DEBUG: padding ${image} with $(( ${padcount} * 512 )) at offset $(( ${padseek} * 512 ))"
|
|
dd seek=${padseek} count=${padcount} \
|
|
if=/dev/zero of=${image} 2>/dev/null
|
|
fi
|
|
|
|
|
|
# final status
|
|
#
|
|
echo "Final result:"
|
|
ls -l ${floppybase}?.fs
|
|
|
|
exit 0
|