Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ulowell!apollo!mishkin
From: mishkin@apollo.COM (Nathaniel Mishkin)
Newsgroups: comp.sys.apollo
Subject: Re: How do I get person, project, org from within a C program?
Message-ID: <41dcce50.18fa1@apollo.COM>
Date: 6 Mar 89 14:55:00 GMT
References: <149@wbcs.UUCP>
Reply-To: mishkin@apollo.com (Nathaniel Mishkin)
Distribution: usa
Organization: Apollo Computer, Chelmsford, MA
Lines: 19

In article <149@wbcs.UUCP> doug@wbcs.UUCP (Doug Kratky) writes:
>I need to be able to get the login identifier of a calling process from
>wihin a C program. The description of pm_$get_sid_txt advertises that
>it does just that, and pm_$get_sid_txt returns a string in a useful
>format. Unfortunately, the sid (login identifier) that pm_$get_sid_txt
>returns can be changed by changing enivronment variables!
>
>Is there an equivalent call or a series of calls that will produce a
>login identifier that can be trusted (i.e., not affected by changes in
>environment variables)?

Just use the getuid/getgid/getoid calls to get the current Unix user,
group, and organization IDs.  You can then use getpwuid/getgrgid/getorgid
to get the corresponding text string names.

-- 
                    -- Nat Mishkin
                       Apollo Computer Inc., Chelmsford, MA
                       mishkin@apollo.com