Xref: utzoo comp.unix.questions:9167 comp.lang.c:12497
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From: tanner@cdis-1.uucp (Dr. T. Andrews)
Newsgroups: comp.unix.questions,comp.lang.c
Subject: Re: General Unix/C question
Keywords: userid Make su segmentation core
Message-ID: <7077@cdis-1.uucp>
Date: 9 Sep 88 14:32:54 GMT
References: <641@jura.tcom.stc.co.uk> <794@philmds.UUCP>
Organization: CompuData Inc., DeLand
Lines: 13

In article <794@philmds.UUCP>, leo@philmds.UUCP (Leo de Wit) writes:
) ...when you start the program the input/output redirection is
) done, perhaps by your shell. This means that these input/output
) streams must be readable/writable by the current uid/gid; when you
) setuid & > setgid the process may not be allowed...

Nope.  Not the case at all.  Once the file is open, the file
descriptor remains open, and usable, until such time is it is
closed (explicitly, via close(2), or implicitly via exit(2) or
exec(2) after ioctl(,,FIOCLEX)).
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