86 lines
3.1 KiB
Bash
86 lines
3.1 KiB
Bash
#!/bin/sh
|
|
#
|
|
# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
#
|
|
# Copyright (C) 2008 The FreeBSD Project. All rights reserved.
|
|
#
|
|
# 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.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY AUTHOR 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 AUTHOR 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.
|
|
#
|
|
# $FreeBSD$
|
|
#
|
|
# Embed an MFS image into the kernel body or the loader body (expects space
|
|
# reserved via MD_ROOT_SIZE (kernel) or MD_IMAGE_SIZE (loader))
|
|
#
|
|
# $1: kernel or loader filename
|
|
# $2: MFS image filename
|
|
#
|
|
|
|
if [ $# -ne 2 ]; then
|
|
echo "usage: $(basename $0) target mfs_image"
|
|
exit 0
|
|
fi
|
|
if [ ! -w "$1" ]; then
|
|
echo $1 not writable
|
|
exit 1
|
|
fi
|
|
|
|
mfs_size=`stat -f '%z' $2 2> /dev/null`
|
|
# If we can't determine MFS image size - bail.
|
|
[ -z ${mfs_size} ] && echo "Can't determine MFS image size" && exit 1
|
|
|
|
err_no_mfs="Can't locate mfs section within "
|
|
|
|
if file -b $1 | grep -q '^ELF ..-bit .SB executable'; then
|
|
|
|
sec_info=`elfdump -c $1 2> /dev/null | grep -A 5 -E "sh_name: oldmfs$"`
|
|
# If we can't find the mfs section within the given kernel - bail.
|
|
[ -z "${sec_info}" ] && echo "${err_no_mfs} $1" && exit 1
|
|
|
|
sec_size=`echo "${sec_info}" | awk '/sh_size/ {print $2}' 2>/dev/null`
|
|
sec_start=`echo "${sec_info}" | \
|
|
awk '/sh_offset/ {print $2}' 2>/dev/null`
|
|
|
|
else
|
|
|
|
#try to find start byte of MFS start flag otherwise - bail.
|
|
sec_start=`strings -at d $1 | grep "MFS Filesystem goes here"` || \
|
|
{ echo "${err_no_mfs} $1"; exit 1; }
|
|
sec_start=`echo ${sec_start} | awk '{print $1}'`
|
|
|
|
#try to find start byte of MFS end flag otherwise - bail.
|
|
sec_end=`strings -at d $1 | \
|
|
grep "MFS Filesystem had better STOP here"` || \
|
|
{ echo "${err_no_mfs} $1"; exit 1; }
|
|
sec_end=`echo ${sec_end} | awk '{print $1}'`
|
|
|
|
#calculate MFS section size
|
|
sec_size=`expr ${sec_end} - ${sec_start}`
|
|
|
|
fi
|
|
|
|
# If the mfs section size is smaller than the mfs image - bail.
|
|
[ ${sec_size} -lt ${mfs_size} ] && echo "MFS image too large" && exit 1
|
|
|
|
# Dump the mfs image into the mfs section
|
|
dd if=$2 ibs=8192 of=$1 obs=${sec_start} oseek=1 conv=notrunc 2> /dev/null && \
|
|
echo "MFS image embedded into $1" && exit 0
|