On Wed, Mar 20, 2019 at 01:14:01PM -0700, Daniel Colascione wrote: > On Wed, Mar 20, 2019 at 1:07 PM Alexey Dobriyan <adobri...@gmail.com> wrote: > > > What would be your opinion to having a > > > /proc/<pid>/handle > > > file instead of having a dirfd. > > > > This is even worse than depending on PROC_FS. Just for the dependency > > pidfd code should be backed out immediately. Forget about /proc. > > We already have pidfds, and we've had them since /proc was added ages > ago.
New pidfd code (or whatever the name) should NOT depend on /proc and should not interact with VFS at all at any point (other than probably being a descriptor on a fake filesystem). The reason is that /proc is full of crap and you don't want to spill that into new and hopefully properly designed part of new code.
