72 lines
1.5 KiB
Bash
72 lines
1.5 KiB
Bash
:
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#set -ex
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VNDEVICE=vn0
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export BLOCKSIZE=512
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BOOTBLKDIR=$1 ; shift
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MNT=$1 ; shift
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FSSIZE=$1 ; shift
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FSPROTO=$1 ; shift
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FSINODE=$1 ; shift
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FSLABEL=$1 ; shift
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deadlock=20
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while true
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do
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rm -f fs-image
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if [ ! -b /dev/${VNDEVICE} -o ! -c /dev/r${VNDEVICE} ] ; then
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( cd /dev && sh MAKEDEV ${VNDEVICE} )
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fi
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umount /dev/${VNDEVICE} 2>/dev/null || true
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umount ${MNT} 2>/dev/null || true
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vnconfig -u /dev/r${VNDEVICE} 2>/dev/null || true
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dd of=fs-image if=/dev/zero count=${FSSIZE} bs=1k 2>/dev/null
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# this suppresses the `invalid primary partition table: no magic'
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awk 'BEGIN {printf "%c%c", 85, 170}' |\
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dd of=fs-image obs=1 seek=510 conv=notrunc 2>/dev/null
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vnconfig -s labels -c /dev/r${VNDEVICE} fs-image
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disklabel -Brw \
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-b ${BOOTBLKDIR}/boot1 \
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-s ${BOOTBLKDIR}/boot2 \
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/dev/r${VNDEVICE} minimum
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TPC=1
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CPD=1
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SPT=$(( 2 * $FSSIZE / 2))
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newfs -u ${SPT} -t ${TPC} -s $(( ${FSSIZE} * 2 )) -i ${FSINODE} -m 0 -o space /dev/r${VNDEVICE}c
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mount /dev/${VNDEVICE}c ${MNT}
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( set -e && cd ${FSPROTO} && find . -print | cpio -dump ${MNT} )
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df -ki /mnt
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set `df -ki /mnt | tail -1`
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umount ${MNT}
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fsck -p /dev/r${VNDEVICE}c < /dev/null
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vnconfig -u /dev/r${VNDEVICE} 2>/dev/null || true
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if [ $FSLABEL != "minimum" ] ; then
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echo ${FSSIZE} > fs-image.size
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break
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fi
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echo ">>> Filesystem is ${FSSIZE} K, $4 left"
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echo ">>> ${FSINODE} bytes/inode, $7 left"
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echo ">>> `expr ${FSSIZE} \* 1024 / ${FSINODE}`"
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echo ${FSSIZE} > fs-image.size
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break;
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done
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