What:		Audit Login UID
Date:		2005-02-01
KernelVersion:	2.6.11-rc2 1e2d1492e178 ("[PATCH] audit: handle loginuid through proc")
Contact:	linux-audit@redhat.com
Users:		audit and login applications
Description:
		The /proc/$pid/loginuid pseudofile is written to set and
		read to get the audit login UID of process $pid as a
		decimal unsigned int (%u, u32).  If it is unset,
		permissions are not needed to set it.  The accessor must
		have CAP_AUDIT_CONTROL in the initial user namespace to
		write it if it has been set.  It cannot be written again
		if AUDIT_FEATURE_LOGINUID_IMMUTABLE is enabled.  It
		cannot be unset if AUDIT_FEATURE_ONLY_UNSET_LOGINUID is
		enabled.

What:		Audit Login Session ID
Date:		2008-03-13
KernelVersion:	2.6.25-rc7 1e0bd7550ea9 ("[PATCH] export sessionid alongside the loginuid in procfs")
Contact:	linux-audit@redhat.com
Users:		audit and login applications
Description:
		The /proc/$pid/sessionid pseudofile is read to get the
		audit login session ID of process $pid as a decimal
		unsigned int (%u, u32).  It is set automatically,
		serially assigned with each new login.