On 12:44 Tue 01 Jun , Yevgeny Kliteynik wrote: > > $> cat /etc/udev/rules.d/80-ib-umad.rules > KERNEL=="umad*", NAME="infiniband/%k", MODE="0666" It is not the same. Your propose to expose /dev/infiniband/umad device access to all world, which is obviously even more dangerous than SUIDing diagnostic programs. Sasha