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#!/sbin/sh
set -e
set -u
MOUNTPOINT="/cdrom"
USR='##USR_IMG##'
export PATH=/sbin:/usr/sbin:/usr/bin
# First, remount / read-write to update /dev
mount -o remount / >/dev/msglog 2>&1
# Second, update /dev
devfsadm -C -c disk
# Now, search removable media for $USR
found='no'
for dfile in /dev/removable-media/dsk/*s2; do
if [ -e "$dfile" ]; then
echo "Probing \`$dfile' ..." >/dev/msglog
if mount -F hsfs -o ro "$dfile" "${MOUNTPOINT}" >/dev/msglog 2>&1
then
if [ -f "${MOUNTPOINT}/${USR}" ]; then
found='yes'
echo "Found ${USR}" >/dev/msglog
break
else
echo "${USR} not found" >/dev/msglog
umount "${MOUNTPOINT}"
fi
else
echo "Failed to mount \`$dfile'" >/dev/msglog
fi
fi
done
if [ "$found" != 'yes' ]; then
echo "$USR not found" >/dev/msglog
exit 1
fi
echo "Mounting \`${MOUNTPOINT}/${USR}' on /usr2 ..." >/dev/msglog
mount -F hsfs -o ro -O "${MOUNTPOINT}/${USR}" /usr2 >/dev/msglog 2>&1
echo "Switching /usr to /usr2 ..." >/dev/msglog
rm -f /usr
ln -sf /usr2 /usr
exit 0
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