On Tue, 06 Feb 2018 16:31:29 -0600, Eric W. Biederman wrote: > Frankly. If we are talking precedence it should be: > fds > netnsids > pids
The current order is 1. pids, 2. fds, though. Not that it matters much, see below. > I do think it makes a lot of sense to error if someone passes in > duplicate arguments. AKA multiple attribute that could select for > the same thing. No one will do that deliberately. It doesn't make > sense. So it is just a nonsense case we have to handle gracefully, > and correctly. With correctness being the most important as otherwise > people might just send in nonsense to exploit bugs. Completely agreed. Let's just start returning error if more than one of the pid/fs/netnsid attributes is specified. I don't think this is going to break any user. And we'll not have to care about the order. > I agree refusing to combine multiple attributes for the same thing > sounds the most sensible course. Yes, please. Thanks! Jiri