3 # SPDX-License-Identifier: BSD-2-Clause-FreeBSD
5 # Copyright (C) 2008 The FreeBSD Project. All rights reserved.
7 # Redistribution and use in source and binary forms, with or without
8 # modification, are permitted provided that the following conditions
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.
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
30 # Embed the MFS image into the kernel body (expects space reserved via
34 # $2: MFS image filename
38 echo "usage: $(basename $0) target mfs_image"
41 if [ ! -w "$1" ]; then
46 mfs_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
50 sec_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 $1" && exit 1
54 sec_size=`echo "${sec_info}" | awk '/sh_size/ {print $2}' 2> /dev/null`
55 sec_start=`echo "${sec_info}" | awk '/sh_offset/ {print $2}' 2> /dev/null`
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
60 # Dump the mfs image into the mfs section
61 dd 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