HardenedBSD/release/amd64/make-memstick.sh
Jessica Clarke 1a9b1c367f release: Add support for building on non-FreeBSD
This requires two sets of changes. Firstly, for non-FreeBSD, we do not
know where tools are in PATH (and it is likely that some are not in
system directories and have been built as bootstrap tools during the
build), so we should leave PATH alone and trust the user. Secondly,
makefs needs a master.passwd for building images from a METALOG file, so
pass the directory in the image tree to makefs's -N option in order to
pick up a valid FreeBSD master.passwd; this is unnecessary on FreeBSD
(except in the edge case of building an image that refers to users or
groups not present in the host's database, which is unlikely but
technically possible) but harmless so can be done unconditionally.

Reviewed by:	brooks, emaste, gjb
Differential Revision:	https://reviews.freebsd.org/D34001
2022-02-28 22:37:37 +00:00

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#!/bin/sh
#
# This script generates a "memstick image" (image that can be copied to a
# USB memory stick) from a directory tree. Note that the script does not
# clean up after itself very well for error conditions on purpose so the
# problem can be diagnosed (full filesystem most likely but ...).
#
# Usage: make-memstick.sh <directory tree or manifest> <image filename>
#
# $FreeBSD$
#
set -e
scriptdir=$(dirname $(realpath $0))
. ${scriptdir}/../../tools/boot/install-boot.sh
if [ "$(uname -s)" = "FreeBSD" ]; then
PATH=/bin:/usr/bin:/sbin:/usr/sbin
export PATH
fi
if [ $# -ne 2 ]; then
echo "make-memstick.sh /path/to/directory/or/manifest /path/to/image/file"
exit 1
fi
MAKEFSARG=${1}
if [ -f ${MAKEFSARG} ]; then
BASEBITSDIR=`dirname ${MAKEFSARG}`
METALOG=${MAKEFSARG}
elif [ -d ${MAKEFSARG} ]; then
BASEBITSDIR=${MAKEFSARG}
METALOG=
else
echo "${MAKEFSARG} must exist"
exit 1
fi
if [ -e ${2} ]; then
echo "won't overwrite ${2}"
exit 1
fi
echo '/dev/ufs/FreeBSD_Install / ufs ro,noatime 1 1' > ${BASEBITSDIR}/etc/fstab
echo 'root_rw_mount="NO"' > ${BASEBITSDIR}/etc/rc.conf.local
if [ -n "${METALOG}" ]; then
metalogfilename=$(mktemp /tmp/metalog.XXXXXX)
cat ${METALOG} > ${metalogfilename}
echo "./etc/fstab type=file uname=root gname=wheel mode=0644" >> ${metalogfilename}
echo "./etc/rc.conf.local type=file uname=root gname=wheel mode=0644" >> ${metalogfilename}
MAKEFSARG=${metalogfilename}
fi
makefs -D -N ${BASEBITSDIR}/etc -B little -o label=FreeBSD_Install -o version=2 ${2}.part ${MAKEFSARG}
rm ${BASEBITSDIR}/etc/fstab
rm ${BASEBITSDIR}/etc/rc.conf.local
if [ -n "${METALOG}" ]; then
rm ${metalogfilename}
fi
# Make an ESP in a file.
espfilename=$(mktemp /tmp/efiboot.XXXXXX)
make_esp_file ${espfilename} ${fat32min} ${BASEBITSDIR}/boot/loader.efi
mkimg -s mbr \
-b ${BASEBITSDIR}/boot/mbr \
-p efi:=${espfilename} \
-p freebsd:-"mkimg -s bsd -b ${BASEBITSDIR}/boot/boot -p freebsd-ufs:=${2}.part" \
-a 2 \
-o ${2}
rm ${espfilename}
rm ${2}.part