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SubjectSO_PEERCRED and pidfd
Hi all,

I'm a Wayland developer and I've been working on protocol security,
which involves identifying the process on the other end of a Unix
socket [1]. This is already done by e.g. D-Bus via the PID, however
this is racy [2].

Getting the PID is done via SO_PEERCRED. Would there be interest in
adding a way to get a pidfd out of a Unix socket to fix the race?


Simon Ser


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