1#!/bin/sh
2#
3# Module: mkisoimages.sh
4# Author: Jordan K Hubbard
5# Date:   22 June 2001
6#
7# $FreeBSD$
8#
9# This script is used by release/Makefile to build the (optional) ISO images
10# for a FreeBSD release.  It is considered architecture dependent since each
11# platform has a slightly unique way of making bootable CDs.  This script
12# is also allowed to generate any number of images since that is more of
13# publishing decision than anything else.
14#
15# Usage:
16#
17# mkisoimages.sh [-b] image-label image-name base-bits-dir [extra-bits-dir]
18#
19# Where -b is passed if the ISO image should be made "bootable" by
20# whatever standards this architecture supports (may be unsupported),
21# image-label is the ISO image label, image-name is the filename of the
22# resulting ISO image, base-bits-dir contains the image contents and
23# extra-bits-dir, if provided, contains additional files to be merged
24# into base-bits-dir as part of making the image.
25if [ $# -lt 3 ]; then
26	echo Usage: $0 '[-b] image-label image-name base-bits-dir [extra-bits-dir]' > /dev/stderr
27	exit 1
28fi
29
30case $1 in
31-b)	BOPT=$1; shift ;;
32esac
33LABEL=`echo $1 | tr '[:lower:]' '[:upper:]'`; shift
34NAME=$1; shift
35BASEBITSDIR=$1
36
37# Create an ISO image
38publisher="The FreeBSD Project.  http://www.FreeBSD.org/"
39echo "/dev/iso9660/$LABEL / cd9660 ro 0 0" > "${BASEBITSDIR}/etc/fstab"
40makefs -t cd9660 -o rockridge -o label="$LABEL" -o publisher="$publisher" ${NAME}.tmp $*
41rm "${BASEBITSDIR}/etc/fstab"
42
43if [ "x$BOPT" != "x-b" ]; then
44	mv ${NAME}.tmp ${NAME}
45	exit 0
46fi
47
48TMPIMGDIR=`mktemp -d /tmp/bootfs.XXXXXXXX` || exit 1
49BOOTFSDIR="${TMPIMGDIR}/bootfs"
50BOOTFSIMG="${TMPIMGDIR}/bootfs.img"
51
52# Create a boot filesystem
53mkdir -p "${BOOTFSDIR}/boot"
54cp -p "${BASEBITSDIR}/boot/loader" "${BOOTFSDIR}/boot"
55makefs -t ffs -B be -M 512k "${BOOTFSIMG}" "${BOOTFSDIR}"
56dd if="${BASEBITSDIR}/boot/boot1" of="${BOOTFSIMG}" bs=512 conv=notrunc,sync
57
58# Create a boot ISO image
59: ${CYLSIZE:=640}
60ISOSIZE=$(stat -f %z ${NAME}.tmp)
61ISOBLKS=$(((${ISOSIZE} + 511) / 512))
62ISOCYLS=$(((${ISOBLKS} + (${CYLSIZE} - 1)) / ${CYLSIZE}))
63
64BOOTFSSIZE=$(stat -f %z "${BOOTFSIMG}")
65BOOTFSBLKS=$(((${BOOTFSSIZE} + 511) / 512))
66BOOTFSCYLS=$(((${BOOTFSBLKS} + (${CYLSIZE} - 1)) / ${CYLSIZE}))
67
68ENDCYL=$((${ISOCYLS} + ${BOOTFSCYLS}))
69NSECTS=$((${ENDCYL} * 1 * ${CYLSIZE}))
70
71dd if=${NAME}.tmp of=${NAME} bs=${CYLSIZE}b conv=notrunc,sync
72dd if=${BOOTFSIMG} of=${NAME} bs=${CYLSIZE}b seek=${ISOCYLS} conv=notrunc,sync
73# The number of alternative cylinders is always 2.
74dd if=/dev/zero of=${NAME} bs=${CYLSIZE}b seek=${ENDCYL} count=2 conv=notrunc,sync
75rm -rf ${NAME}.tmp ${TMPIMGDIR}
76
77# Write VTOC8 label to boot ISO image
78MD=`mdconfig -a -t vnode -S 512 -y 1 -x ${CYLSIZE} -f ${NAME}`
79gpart create -s VTOC8 ${MD}
80# !4: usr, for ISO image part
81gpart add -i 1 -s $((${ISOCYLS} * ${CYLSIZE} * 512))b -t \!4 ${MD}
82# !2: root, for bootfs part.
83gpart add -i 6 -s $((${BOOTFSCYLS} * ${CYLSIZE} * 512))b -t \!2 ${MD}
84mdconfig -d -u ${MD#md}
85