auid field when switching user

[Steve Grubb]

Hello,

On Wednesday, May 06, 2015 04:39:16 PM Guillaume L. wrote:
> I'm trying to use auditd to log all actions made by the users on the
> system. This part works fine.
> 
> The documentation mention the "auid" field to identify the user from the
> first connection "even" when the user's identity changes (like with a su):

Correct.

> auid=500
> The auid field records the Audit user ID, that is the loginuid. This ID is
> assigned to a user upon login and is inherited by every process even when
> the user's identity changes (for example, by switching user accounts with
> the su - john command).
> 
> But this is not working. If I log with the user "test" (uid 1000) when I
> switch to the user root, the value of auid is 0 (the uid of root).

How did you switch the user? I would like to try recreating the issue. It may 
be that the underlying implementation actually does log you out. You'd have to 
look for one of:

AUDIT_USER_LOGOUT -  User has logged out
AUDIT_USER_END - User session end
AUDIT_CRED_DISP - User credential disposed


-Steve