Re: Proposal "LUID"

From: allbery@kf8nh.apk.net
Date: Sun Apr 16 2000 - 14:25:48 EST


On 15 Apr, Jan Harkes wrote:
+-----
| > How do people feel about the following proposal:
| > Adding support for login user id (auditable user id).
| >
| > 1) adding a variable "luid" to the uid_t line in the task struct
| > 2) adding two system calls - 1 to 'set' and one to 'get' the value.
| > 3) adding CAP_SET_LUID that allows setting setting the luid
|
| This sound remarkably close to the process authentication group (PAG),
+--->8

It's not. PAGs are used for permissions; LUIDs are used only for
*logging*. There are no permissions associated with the LUID; it's
simply a way to track actions performed by a user based on who they
logged in as, across any uid changes (including real user ID changes,
as with su).

CCAP ("C2") security requires logging/auditing by LUID.

-- 
brandon s. allbery	   os/2,linux,solaris,perl	allbery@kf8nh.apk.net
system administrator	   kthkrb,heimdal,gnome,rt	  allbery@ece.cmu.edu
carnegie mellon / electrical and computer engineering			kf8nh
    We are Linux. Resistance is an indication that you missed the point.

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