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" "$@"
41rm -f "$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