3 # SPDX-License-Identifier: BSD-2-Clause
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
29 # Embed an MFS image into the kernel body or the loader body (expects space
30 # reserved via MD_ROOT_SIZE (kernel) or MD_IMAGE_SIZE (loader))
32 # $1: kernel or loader filename
33 # $2: MFS image filename
37 echo "usage: $(basename $0) target mfs_image"
40 if [ ! -w "$1" ]; then
45 mfs_size=`stat -f '%z' $2 2> /dev/null`
46 # If we can't determine MFS image size - bail.
47 if [ -z ${mfs_size} ]; then
48 echo "Can't determine MFS image size"
52 err_no_mfs="Can't locate mfs section within "
54 if file -b $1 | grep -q '^ELF ..-bit .SB executable'; then
56 sec_info=`elfdump -c $1 2> /dev/null | grep -A 5 -E "sh_name: oldmfs$"`
57 # If we can't find the mfs section within the given kernel - bail.
58 if [ -z "${sec_info}" ]; then
59 echo "${err_no_mfs} $1"
63 sec_size=`echo "${sec_info}" | awk '/sh_size/ {print $2}' 2>/dev/null`
64 sec_start=`echo "${sec_info}" | \
65 awk '/sh_offset/ {print $2}' 2>/dev/null`
69 #try to find start byte of MFS start flag otherwise - bail.
70 sec_start=`strings -at d $1 | grep "MFS Filesystem goes here"` || \
71 { echo "${err_no_mfs} $1"; exit 1; }
72 sec_start=`echo ${sec_start} | awk '{print $1}'`
74 #try to find start byte of MFS end flag otherwise - bail.
75 sec_end=`strings -at d $1 | \
76 grep "MFS Filesystem had better STOP here"` || \
77 { echo "${err_no_mfs} $1"; exit 1; }
78 sec_end=`echo ${sec_end} | awk '{print $1}'`
80 #calculate MFS section size
81 sec_size=`expr ${sec_end} - ${sec_start}`
85 # If the mfs section size is smaller than the mfs image - bail.
86 if [ ${sec_size} -lt ${mfs_size} ]; then
87 echo "MFS image too large"
91 # Dump the mfs image into the mfs section
92 dd if=$2 ibs=8192 of=$1 obs=${sec_start} oseek=1 conv=notrunc 2> /dev/null && \
93 echo "MFS image embedded into $1" && exit 0