On Tue, Jun 24, 2025 at 10:29:13AM +0200, Christian Brauner wrote: > Various filesystems such as pidfs (and likely drm in the future) have a > use-case to support opening files purely based on the handle without > having to require a file descriptor to another object. That's especially > the case for filesystems that don't do any lookup whatsoever and there's > zero relationship between the objects. Such filesystems are also > singletons that stay around for the lifetime of the system meaning that > they can be uniquely identified and accessed purely based on the file > handle type. Enable that so that userspace doesn't have to allocate an > object needlessly especially if they can't do that for whatever reason. Whoa... Two notes: 1) you really want to make sure that no _directories_ on those filesystems are decodable. 2) do you want to get the damn things bound somewhere?