freebsd-nq/release/amd64/mkisoimages.sh
Matt Macy 14113f123e Use makefs -t msdos in make_esp_file
With this last piece in place, make -C /usr/src/release release.iso is
finally able to run in a jail. This was not possible before because
msdosfs cannot be mounted inside a jail.

Submitted by:	ryan@ixsystems.com
Reviewed by:	emaste@, imp@, gjb@
MFC after:	1 week
Sponsored by:	iXsystems, Inc.
Differential Revision:	https://reviews.freebsd.org/D21385
2019-09-03 18:37:55 +00:00

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#!/bin/sh
#
# Module: mkisoimages.sh
# Author: Jordan K Hubbard
# Date: 22 June 2001
#
# $FreeBSD$
#
# This script is used by release/Makefile to build the (optional) ISO images
# for a FreeBSD release. It is considered architecture dependent since each
# platform has a slightly unique way of making bootable CDs. This script
# is also allowed to generate any number of images since that is more of
# publishing decision than anything else.
#
# Usage:
#
# mkisoimages.sh [-b] image-label image-name base-bits-dir [extra-bits-dir]
#
# Where -b is passed if the ISO image should be made "bootable" by
# whatever standards this architecture supports (may be unsupported),
# image-label is the ISO image label, image-name is the filename of the
# resulting ISO image, base-bits-dir contains the image contents and
# extra-bits-dir, if provided, contains additional files to be merged
# into base-bits-dir as part of making the image.
set -e
scriptdir=$(dirname $(realpath $0))
. ${scriptdir}/../../tools/boot/install-boot.sh
if [ -z $ETDUMP ]; then
ETDUMP=etdump
fi
if [ -z $MAKEFS ]; then
MAKEFS=makefs
fi
if [ -z $MKIMG ]; then
MKIMG=mkimg
fi
if [ "$1" = "-b" ]; then
BASEBITSDIR="$4"
# This is highly x86-centric and will be used directly below.
bootable="-o bootimage=i386;$BASEBITSDIR/boot/cdboot -o no-emul-boot"
# Make EFI system partition.
# The ISO file is a special case, in that it only has a maximum of
# 800 KB available for the boot code. So make an 800 KB ESP
espfilename=$(mktemp /tmp/efiboot.XXXXXX)
make_esp_file ${espfilename} 800 ${BASEBITSDIR}/boot/loader.efi
bootable="$bootable -o bootimage=i386;${espfilename} -o no-emul-boot -o platformid=efi"
shift
else
BASEBITSDIR="$3"
bootable=""
fi
if [ $# -lt 3 ]; then
echo "Usage: $0 [-b] image-label image-name base-bits-dir [extra-bits-dir]"
exit 1
fi
LABEL=`echo "$1" | tr '[:lower:]' '[:upper:]'`; shift
NAME="$1"; shift
publisher="The FreeBSD Project. https://www.FreeBSD.org/"
echo "/dev/iso9660/$LABEL / cd9660 ro 0 0" > "$BASEBITSDIR/etc/fstab"
$MAKEFS -t cd9660 $bootable -o rockridge -o label="$LABEL" -o publisher="$publisher" "$NAME" "$@"
rm -f "$BASEBITSDIR/etc/fstab"
rm -f ${espfilename}
if [ "$bootable" != "" ]; then
# Look for the EFI System Partition image we dropped in the ISO image.
for entry in `$ETDUMP --format shell $NAME`; do
eval $entry
if [ "$et_platform" = "efi" ]; then
espstart=`expr $et_lba \* 2048`
espsize=`expr $et_sectors \* 512`
espparam="-p efi::$espsize:$espstart"
break
fi
done
# Create a GPT image containing the partitions we need for hybrid boot.
imgsize=`stat -f %z "$NAME"`
$MKIMG -s gpt \
--capacity $imgsize \
-b "$BASEBITSDIR/boot/pmbr" \
$espparam \
-p freebsd-boot:="$BASEBITSDIR/boot/isoboot" \
-o hybrid.img
# Drop the PMBR, GPT, and boot code into the System Area of the ISO.
dd if=hybrid.img of="$NAME" bs=32k count=1 conv=notrunc
rm -f hybrid.img
fi