85 lines
2.8 KiB
Bash
85 lines
2.8 KiB
Bash
#!/bin/sh
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#
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# Module: mkisoimages.sh
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# Author: Jordan K Hubbard
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# Date: 22 June 2001
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#
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# $FreeBSD$
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#
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# This script is used by release/Makefile to build the (optional) ISO images
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# for a FreeBSD release. It is considered architecture dependent since each
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# platform has a slightly unique way of making bootable CDs. This script
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# is also allowed to generate any number of images since that is more of
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# publishing decision than anything else.
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#
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# Usage:
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#
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# mkisoimages.sh [-b] image-label image-name base-bits-dir [extra-bits-dir]
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#
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# Where -b is passed if the ISO image should be made "bootable" by
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# whatever standards this architecture supports (may be unsupported),
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# image-label is the ISO image label, image-name is the filename of the
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# resulting ISO image, base-bits-dir contains the image contents and
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# extra-bits-dir, if provided, contains additional files to be merged
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# into base-bits-dir as part of making the image.
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if [ $# -lt 3 ]; then
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echo "Usage: $0 [-b] image-label image-name base-bits-dir [extra-bits-dir]" > /dev/stderr
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exit 1
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fi
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case "$1" in
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-b) BOPT="$1"; shift ;;
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esac
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LABEL=`echo "$1" | tr '[:lower:]' '[:upper:]'`; shift
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NAME="$1"; shift
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BASEBITSDIR="$1"
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# Create an ISO image
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publisher="The FreeBSD Project. https://www.FreeBSD.org/"
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echo "/dev/iso9660/$LABEL / cd9660 ro 0 0" > "$BASEBITSDIR/etc/fstab"
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makefs -t cd9660 -o rockridge -o label="$LABEL" -o publisher="$publisher" "$NAME.tmp" "$@"
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rm -f "$BASEBITSDIR/etc/fstab"
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if [ "$BOPT" != "-b" ]; then
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mv "$NAME.tmp" "$NAME"
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exit 0
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fi
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TMPIMGDIR=`mktemp -d /tmp/bootfs.XXXXXXXX` || exit 1
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BOOTFSDIR="$TMPIMGDIR/bootfs"
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BOOTFSIMG="$TMPIMGDIR/bootfs.img"
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# Create a boot filesystem
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mkdir -p "$BOOTFSDIR/boot"
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cp -p "$BASEBITSDIR/boot/loader" "$BOOTFSDIR/boot"
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makefs -t ffs -B be -M 512k "$BOOTFSIMG" "$BOOTFSDIR"
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dd if="$BASEBITSDIR/boot/boot1" of="$BOOTFSIMG" bs=512 conv=notrunc,sync
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# Create a boot ISO image
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: ${CYLSIZE:=640}
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ISOSIZE=$(stat -f %z "$NAME.tmp")
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ISOBLKS=$((($ISOSIZE + 511) / 512))
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ISOCYLS=$((($ISOBLKS + ($CYLSIZE - 1)) / $CYLSIZE))
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BOOTFSSIZE=$(stat -f %z "$BOOTFSIMG")
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BOOTFSBLKS=$((($BOOTFSSIZE + 511) / 512))
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BOOTFSCYLS=$((($BOOTFSBLKS + ($CYLSIZE - 1)) / $CYLSIZE))
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ENDCYL=$(($ISOCYLS + $BOOTFSCYLS))
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NSECTS=$(($ENDCYL * 1 * $CYLSIZE))
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dd if="$NAME.tmp" of="$NAME" bs="${CYLSIZE}b" conv=notrunc,sync
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dd if="$BOOTFSIMG" of="$NAME" bs="${CYLSIZE}b" seek=$ISOCYLS conv=notrunc,sync
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# The number of alternative cylinders is always 2.
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dd if=/dev/zero of="$NAME" bs="${CYLSIZE}b" seek=$ENDCYL count=2 conv=notrunc,sync
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rm -rf "$NAME.tmp" "$TMPIMGDIR"
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# Write VTOC8 label to boot ISO image
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MD=`mdconfig -a -t vnode -S 512 -y 1 -x "$CYLSIZE" -f "$NAME"`
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gpart create -s VTOC8 $MD
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# !4: usr, for ISO image part
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gpart add -i 1 -s "$(($ISOCYLS * $CYLSIZE * 512))b" -t \!4 $MD
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# !2: root, for bootfs part.
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gpart add -i 6 -s "$(($BOOTFSCYLS * $CYLSIZE * 512))b" -t \!2 $MD
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mdconfig -d -u ${MD#md}
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