1#!/bin/sh 2# 3# SPDX-License-Identifier: BSD-2-Clause-FreeBSD 4# 5# Copyright (C) 2008 The FreeBSD Project. All rights reserved. 6# 7# Redistribution and use in source and binary forms, with or without 8# modification, are permitted provided that the following conditions 9# are met: 10# 1. Redistributions of source code must retain the above copyright 11# notice, this list of conditions and the following disclaimer. 12# 2. Redistributions in binary form must reproduce the above copyright 13# notice, this list of conditions and the following disclaimer in the 14# documentation and/or other materials provided with the distribution. 15# 16# THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19# ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 20# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26# SUCH DAMAGE. 27# 28# $FreeBSD$ 29# 30# Embed the MFS image into the kernel body (expects space reserved via 31# MD_ROOT_SIZE) 32# 33# $1: kernel filename 34# $2: MFS image filename 35# 36 37if [ $# -ne 2 ]; then 38 echo "usage: $(basename $0) target mfs_image" 39 exit 0 40fi 41if [ ! -w "$1" ]; then 42 echo $1 not writable 43 exit 1 44fi 45 46mfs_size=`stat -f '%z' $2 2> /dev/null` 47# If we can't determine MFS image size - bail. 48[ -z ${mfs_size} ] && echo "Can't determine MFS image size" && exit 1 49 50sec_info=`elfdump -c $1 2> /dev/null | grep -A 5 -E "sh_name: oldmfs$"` 51# If we can't find the mfs section within the given kernel - bail. 52[ -z "${sec_info}" ] && echo "Can't locate mfs section within $1" && exit 1 53 54sec_size=`echo "${sec_info}" | awk '/sh_size/ {print $2}' 2> /dev/null` 55sec_start=`echo "${sec_info}" | awk '/sh_offset/ {print $2}' 2> /dev/null` 56 57# If the mfs section size is smaller than the mfs image - bail. 58[ ${sec_size} -lt ${mfs_size} ] && echo "MFS image too large" && exit 1 59 60# Dump the mfs image into the mfs section 61dd if=$2 ibs=8192 of=$1 obs=${sec_start} oseek=1 conv=notrunc 2> /dev/null && \ 62 echo "MFS image embedded into kernel" && exit 0 63