Path: utzoo!attcan!uunet!lll-winken!ames!mailrus!uflorida!haven!mimsy!chris
From: chris@mimsy.UUCP (Chris Torek)
Newsgroups: comp.unix.wizards
Subject: Re: script & lock
Keywords: getlogin(3)
Message-ID: <15428@mimsy.UUCP>
Date: 12 Jan 89 13:57:07 GMT
References: <17972@adm.BRL.MIL> <596@cf-cm.UUCP> <15399@mimsy.UUCP> <6925@june.cs.washington.edu>
Organization: U of Maryland, Dept. of Computer Science, Coll. Pk., MD 20742
Lines: 18

In article <6925@june.cs.washington.edu> ka@june.cs.washington.edu
(Kenneth Almquist) writes:
>The source may be the final reference, but there's no law against looking
>things up in the manual.

(I like that line; shall have to use it myself someday...)

>	If getlogin is called within a process that is not attached to
>	a terminal or if there is no entry in /etc/utmp for the process's
>	terminal, getlogin returns a NULL pointer (0).

The key phrase is `if there is no entry in /etc/utmp'.  An entry with
utmp.ut_name[0]=='\0' is considered `no entry'.

Bad wording in the manual, to say the least.
-- 
In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 7163)
Domain:	chris@mimsy.umd.edu	Path:	uunet!mimsy!chris