freebsd-skq/release/amd64/mkisoimages.sh
Emmanuel Vadot 90d2f7c413 release: amd64: Fix ISO/USB hybrid image
Recent mkimg changes forces to have partitions given in explicit order.
This is so we can have the first partition starting at a specific offset
and the next ones starting after without having to specify an offset.
Switch the partition in the mkisoimage.sh script so the first one created
is the isoboot one.

PR:    254490
Reported by:	Michael Dexter <editor@callfortesting.org
Tested by:	Vincent Milum Jr <freebsd@darkain.com>
MFC after:	Right now
2021-03-27 12:04:51 +01:00

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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.
espfilename=$(mktemp /tmp/efiboot.XXXXXX)
# ESP file size in KB.
espsize="2048"
make_esp_file ${espfilename} ${espsize} ${BASEBITSDIR}/boot/loader.efi
bootable="$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" \
-p freebsd-boot:="$BASEBITSDIR/boot/isoboot" \
$espparam \
-o hybrid.img
# Drop the PMBR, GPT, and boot code into the System Area of the ISO.
dd if=hybrid.img of="$NAME" bs=32k count=1 conv=notrunc
rm -f hybrid.img
fi