[RFC][PATCH] loginuid through procfs (+ a question)

Attached is a first stab at setting loginuid through /proc/$$/loginuid. Compiled and tested here. A related question: On receipt of a AUDIT_USER message, we log the pid and uid, but not the loginuid. Is it ok to force the user-space code to search through previous log entries to determine the correct loginuid, or would we prefer to send the loginuid in the log entry? Note: this is on top of Stephen's loginuid inheritence fix, and my previous CAP_AUDIT_* patch on 2.6.10-bk9. thanks, -serge -- Serge Hallyn <serue(a)us.ibm.com&gt;