linux_module_learn/examples/scullp/scullp_load

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2023-07-22 13:42:32 +08:00
#!/bin/sh
module="scullp"
device="scullp"
mode="664"
# Group: since distributions do it differently, look for wheel or use staff
if grep '^staff:' /etc/group > /dev/null; then
group="staff"
else
group="wheel"
fi
# remove stale nodes
rm -f /dev/${device}?
# invoke insmod with all arguments we got
# and use a pathname, as newer modutils don't look in . by default
/sbin/insmod -f ./$module.ko $* || exit 1
major=`cat /proc/devices | awk "\\$2==\"$module\" {print \\$1}"`
mknod /dev/${device}0 c $major 0
mknod /dev/${device}1 c $major 1
mknod /dev/${device}2 c $major 2
mknod /dev/${device}3 c $major 3
ln -sf ${device}0 /dev/${device}
# give appropriate group/permissions
chgrp $group /dev/${device}[0-3]
chmod $mode /dev/${device}[0-3]