1#!/bin/sh 2# 3# Copyright (C) 2008 The FreeBSD Project. All rights reserved. 4# 5# Redistribution and use in source and binary forms, with or without 6# modification, are permitted provided that the following conditions 7# are met: 8# 1. Redistributions of source code must retain the above copyright 9# notice, this list of conditions and the following disclaimer. 10# 2. Redistributions in binary form must reproduce the above copyright 11# notice, this list of conditions and the following disclaimer in the 12# documentation and/or other materials provided with the distribution. 13# 14# THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17# ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 18# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24# SUCH DAMAGE. 25# 26# $FreeBSD$ 27# 28# Embed the MFS image into the kernel body (expects space reserved via 29# MD_ROOT_SIZE) 30# 31# $1: kernel filename 32# $2: MFS image filename 33# 34 35if [ $# -ne 2 ]; then 36 echo "usage: $(basename $0) target mfs_image" 37 exit 0 38fi 39if [ ! -w "$1" ]; then 40 echo $1 not writable 41 exit 1 42fi 43 44mfs_size=`stat -f '%z' $2 2> /dev/null` 45# If we can't determine MFS image size - bail. 46[ -z ${mfs_size} ] && echo "Can't determine MFS image size" && exit 1 47 48sec_info=`elfdump -c $1 2> /dev/null | grep -A 5 -E "sh_name: oldmfs$"` 49# If we can't find the mfs section within the given kernel - bail. 50[ -z "${sec_info}" ] && echo "Can't locate mfs section within $1" && exit 1 51 52sec_size=`echo "${sec_info}" | awk '/sh_size/ {print $2}' 2> /dev/null` 53sec_start=`echo "${sec_info}" | awk '/sh_offset/ {print $2}' 2> /dev/null` 54 55# If the mfs section size is smaller than the mfs image - bail. 56[ ${sec_size} -lt ${mfs_size} ] && echo "MFS image too large" && exit 1 57 58# Dump the mfs image into the mfs section 59dd if=$2 ibs=8192 of=$1 obs=${sec_start} oseek=1 conv=notrunc 2> /dev/null && \ 60 echo "MFS image embedded into kernel" && exit 0 61