#!/bin/sh
#
# Module: mkisoimages.sh
# Author: Jordan K Hubbard
# Date:   22 June 2001
#
# $FreeBSD: stable/11/release/sparc64/mkisoimages.sh 293223 2016-01-05 21:05:17Z gjb $
#
# 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.
if test $Argc -lt 3 {
	echo "Usage: $0 [-b] image-label image-name base-bits-dir [extra-bits-dir]" > /dev/stderr
	exit 1
}

case (1) {
-b {	setvar BOPT = "$1"; shift }
}
setvar LABEL = $(echo $1 | tr '[:lower:]' '[:upper:]); shift
setvar NAME = "$1"; shift
setvar BASEBITSDIR = "$1"

# Create an ISO image
setvar publisher = ""The FreeBSD Project.  http://www.FreeBSD.org/""
echo "/dev/iso9660/$LABEL / cd9660 ro 0 0" > "$BASEBITSDIR/etc/fstab"
makefs -t cd9660 -o rockridge -o label="$LABEL" -o publisher="$publisher" "$NAME.tmp" @ARGV
rm -f "$BASEBITSDIR/etc/fstab"

if test "x$BOPT" != "x-b" {
	mv "$NAME.tmp" $NAME
	exit 0
}

setvar TMPIMGDIR = $(mktemp -d /tmp/bootfs.XXXXXXXX) || exit 1
setvar BOOTFSDIR = ""$TMPIMGDIR/bootfs""
setvar BOOTFSIMG = ""$TMPIMGDIR/bootfs.img""

# Create a boot filesystem
mkdir -p "$BOOTFSDIR/boot"
cp -p "$BASEBITSDIR/boot/loader" "$BOOTFSDIR/boot"
makefs -t ffs -B be -M 512k $BOOTFSIMG $BOOTFSDIR
dd if="$BASEBITSDIR/boot/boot1" of="$BOOTFSIMG" bs=512 conv=notrunc,sync

# Create a boot ISO image
: ${CYLSIZE:=640}
setvar ISOSIZE = $(stat -f %z "$NAME.tmp")
setvar ISOBLKS = $((($ISOSIZE + 511) / 512))
setvar ISOCYLS = $((($ISOBLKS + ($CYLSIZE - 1)) / $CYLSIZE))

setvar BOOTFSSIZE = $(stat -f %z "$BOOTFSIMG")
setvar BOOTFSBLKS = $((($BOOTFSSIZE + 511) / 512))
setvar BOOTFSCYLS = $((($BOOTFSBLKS + ($CYLSIZE - 1)) / $CYLSIZE))

setvar ENDCYL = $(($ISOCYLS + $BOOTFSCYLS))
setvar NSECTS = $(($ENDCYL * 1 * $CYLSIZE))

dd if="$NAME.tmp" of="$NAME" bs="${CYLSIZE}b" conv=notrunc,sync
dd if="$BOOTFSIMG" of="$NAME" bs="${CYLSIZE}b" seek=$ISOCYLS conv=notrunc,sync
# The number of alternative cylinders is always 2.
dd if=/dev/zero of="$NAME" bs="${CYLSIZE}b" seek=$ENDCYL count=2 conv=notrunc,sync
rm -rf "$NAME.tmp" $TMPIMGDIR

# Write VTOC8 label to boot ISO image
setvar MD = $(mdconfig -a -t vnode -S 512 -y 1 -x $CYLSIZE -f $NAME)
gpart create -s VTOC8 $MD
# !4: usr, for ISO image part
gpart add -i 1 -s "$(($ISOCYLS * $CYLSIZE * 512))b" -t '!'4 $MD
# !2: root, for bootfs part.
gpart add -i 6 -s "$(($BOOTFSCYLS * $CYLSIZE * 512))b" -t '!'2 $MD
mdconfig -d -u ${MD#md}