stand alone (kinda) floppy generation..

you still need tohave done a make world and have made 'sysinstall'
this should not interfere with existing code as it's standalone.
write_mfs_in_kernel.c is duplicated alsewhere.. one will go ..

1 files changed, 120 insertions, 0 deletions

diff --git a/release/floppies/doFS.sh b/release/floppies/doFS.sh
new file mode 100644
index 0000000..1693226
--- /dev/null
+++ b/release/floppies/doFS.sh
@@ -0,0 +1,120 @@
+:
+#set -ex
+
+VNDEVICE=vn0
+export BLOCKSIZE=512
+
+LABELDIR=$1 ; shift
+MNT=$1 ; shift
+FSSIZE=$1 ; shift
+FSPROTO=$1 ; shift
+FSINODE=$1 ; shift
+FSLABEL=$1 ; shift
+OLDFSSIZE=${FSSIZE}
+OLDFSINODE=${FSINODE}
+
+deadlock=40
+
+while true 
+do
+	rm -f fs-image
+
+	if [ ! -b /dev/${VNDEVICE} -o ! -c /dev/r${VNDEVICE} ] ; then 
+		( cd /dev && sh MAKEDEV ${VNDEVICE} )
+	fi
+
+	umount /dev/${VNDEVICE} 2>/dev/null || true
+
+	umount ${MNT} 2>/dev/null || true
+
+	vnconfig -u /dev/r${VNDEVICE} 2>/dev/null || true
+
+	dd of=fs-image if=/dev/zero count=${FSSIZE} bs=1k 2>/dev/null
+	# this suppresses the `invalid primary partition table: no magic'
+	awk 'BEGIN {printf "%c%c", 85, 170}' |\
+	    dd of=fs-image obs=1 seek=510 conv=notrunc 2>/dev/null
+
+	vnconfig -s labels -c /dev/r${VNDEVICE} fs-image
+
+	sed '/^minimum:/,$d' /etc/disktab > /etc/disktab.tmp
+	cat /etc/disktab.tmp > /etc/disktab
+	rm -f /etc/disktab.tmp
+	(
+	a=`expr ${FSSIZE} \* 2`
+	echo 
+	echo "minimum:ty=mfs:se#512:nt#1:rm#300:\\"
+	echo "	:ns#$a:nc#1:\\"
+	echo "	:pa#$a:oa#0:ba#4096:fa#512:\\"
+	echo "	:pc#$a:oc#0:bc#4096:fc#512:"
+	echo
+	) >> /etc/disktab
+
+	disklabel -w -r -B \
+		-b ${LABELDIR}/boot1 \
+		-s ${LABELDIR}/boot2 \
+		/dev/r${VNDEVICE} minimum
+
+	newfs -u 0 -t 0 -i ${FSINODE} -m 0 -T minimum /dev/r${VNDEVICE}a
+
+	mount /dev/${VNDEVICE}a ${MNT}
+
+	if ( set -e && cd ${FSPROTO} && find . -print | cpio -dump ${MNT} )
+	then 
+		;
+	else
+		echo " $FSINODE and $FSSIZE failed, reverting.."
+		FSSIZE=`expr ${FSSIZE} + 10`
+		#FSSIZE=${OLDFSSIZE}
+		FSINODE=${FSINODE}
+		continue
+	fi
+
+	set `df -i /mnt | tail -1`
+#/dev/vn0a         937      932        5    99%     342     328    51%   /mnt
+
+	umount ${MNT}
+
+	fsck -p /dev/r${VNDEVICE}a < /dev/null
+
+	vnconfig -u /dev/r${VNDEVICE} 2>/dev/null || true
+
+	if [ $FSLABEL != "minimum" ] ; then
+		echo ${FSSIZE} > fs-image.size
+		break
+	fi
+
+	OLDFSSIZE=${FSSIZE}
+	OLDFSINODE=${FSINODE}
+	echo ">>> Filesystem is ${FSSIZE} K, $4 left"
+	echo ">>>     ${FSINODE} bytes/inode, $7 left"
+	echo ">>>   `expr ${FSSIZE} \* 1024 / ${FSINODE}`"
+	if [ $4 -gt 128 ] ; then
+		echo "Reducing size"
+		FSSIZE=`expr ${FSSIZE} - $4 / 2`
+		continue
+	fi
+	if [ $7 -gt 128 ] ; then
+		echo "Increasing bytes per inode"
+		FSINODE=`expr ${FSINODE} + 8192`
+		continue
+	fi
+	if [ $4 -gt 32 ] ; then
+		echo "Reducing size"
+		FSSIZE=`expr ${FSSIZE} - 4`
+		FSINODE=`expr ${FSINODE} - 1024`
+		continue
+	fi
+	if [ $7 -gt 64 ] ; then
+		echo "Increasing bytes per inode"
+		FSINODE=`expr ${FSINODE} + 8192`
+		continue
+	fi
+	if [ $deadlock -eq 0 ] ; then
+		echo "Avoiding deadlock, giving up"
+		echo ${FSSIZE} > fs-image.size
+		break
+	fi
+	deadlock=`expr $deadlock - 1`
+	echo ${FSSIZE} > fs-image.size
+	break;
+done