This patch implements user based capabilities.

With this module, you will be able to grant capabilities based on
user-/groupid (root by default). This patch uses sysfs/kobject for the
user interface.

For example you can create a group raw and change the capability
net_raw to this group:

# chgrp raw /sys/usercaps/net_raw
# chmod ug+x /sys/usercaps/net_raw
# chgrp raw /sbin/ping
# chmod u-s /sbin/ping; chmod g+s /sbin/ping

or you can give a group of users some capability:

# chgrp wheel /sys/usercaps/sys_admin
# chmod ug+x /sys/usercaps/sys_admin

Known bugs:
- show()/store() not implemented
- only minimally tested against 2.6.9

Regards, Olaf.