3 # Module: mkisoimages.sh
4 # Author: Jordan K Hubbard
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.
17 # mkisoimages.sh [-b] image-label image-name base-bits-dir [extra-bits-dir]
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.
26 echo "Usage: $0 [-b] image-label image-name base-bits-dir [extra-bits-dir]" > /dev/stderr
31 -b) BOPT="$1"; shift ;;
33 LABEL=`echo "$1" | tr '[:lower:]' '[:upper:]'`; shift
38 publisher="The FreeBSD Project. http://www.FreeBSD.org/"
39 echo "/dev/iso9660/$LABEL / cd9660 ro 0 0" > "$BASEBITSDIR/etc/fstab"
40 makefs -t cd9660 -o rockridge -o label="$LABEL" -o publisher="$publisher" "$NAME.tmp" "$@"
41 rm "$BASEBITSDIR/etc/fstab"
43 if [ "x$BOPT" != "x-b" ]; then
44 mv "$NAME.tmp" "$NAME"
48 TMPIMGDIR=`mktemp -d /tmp/bootfs.XXXXXXXX` || exit 1
49 BOOTFSDIR="$TMPIMGDIR/bootfs"
50 BOOTFSIMG="$TMPIMGDIR/bootfs.img"
52 # Create a boot filesystem
53 mkdir -p "$BOOTFSDIR/boot"
54 cp -p "$BASEBITSDIR/boot/loader" "$BOOTFSDIR/boot"
55 makefs -t ffs -B be -M 512k "$BOOTFSIMG" "$BOOTFSDIR"
56 dd if="$BASEBITSDIR/boot/boot1" of="$BOOTFSIMG" bs=512 conv=notrunc,sync
58 # Create a boot ISO image
60 ISOSIZE=$(stat -f %z "$NAME.tmp")
61 ISOBLKS=$((($ISOSIZE + 511) / 512))
62 ISOCYLS=$((($ISOBLKS + ($CYLSIZE - 1)) / $CYLSIZE))
64 BOOTFSSIZE=$(stat -f %z "$BOOTFSIMG")
65 BOOTFSBLKS=$((($BOOTFSSIZE + 511) / 512))
66 BOOTFSCYLS=$((($BOOTFSBLKS + ($CYLSIZE - 1)) / $CYLSIZE))
68 ENDCYL=$(($ISOCYLS + $BOOTFSCYLS))
69 NSECTS=$(($ENDCYL * 1 * $CYLSIZE))
71 dd if="$NAME.tmp" of="$NAME" bs="${CYLSIZE}b" conv=notrunc,sync
72 dd if="$BOOTFSIMG" of="$NAME" bs="${CYLSIZE}b" seek=$ISOCYLS conv=notrunc,sync
73 # The number of alternative cylinders is always 2.
74 dd if=/dev/zero of="$NAME" bs="${CYLSIZE}b" seek=$ENDCYL count=2 conv=notrunc,sync
75 rm -rf "$NAME.tmp" "$TMPIMGDIR"
77 # Write VTOC8 label to boot ISO image
78 MD=`mdconfig -a -t vnode -S 512 -y 1 -x "$CYLSIZE" -f "$NAME"`
79 gpart create -s VTOC8 $MD
80 # !4: usr, for ISO image part
81 gpart add -i 1 -s "$(($ISOCYLS * $CYLSIZE * 512))b" -t \!4 $MD
82 # !2: root, for bootfs part.
83 gpart add -i 6 -s "$(($BOOTFSCYLS * $CYLSIZE * 512))b" -t \!2 $MD
84 mdconfig -d -u ${MD#md}