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Date:      Thu, 10 May 2001 15:12:41 +0300
From:      Ruslan Ermilov <ru@FreeBSD.ORG>
To:        Bruce Evans <bde@zeta.org.au>
Cc:        Kris Kennaway <kris@obsecurity.org>, audit@FreeBSD.ORG
Subject:   Re: ping6 fixes
Message-ID:  <20010510151241.A44027@sunbay.com>
In-Reply-To: <Pine.BSF.4.21.0105102044460.1933-100000@besplex.bde.org>; from bde@zeta.org.au on Thu, May 10, 2001 at 08:52:50PM %2B1000
References:  <20010510124858.D19855@sunbay.com> <Pine.BSF.4.21.0105102044460.1933-100000@besplex.bde.org>

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On Thu, May 10, 2001 at 08:52:50PM +1000, Bruce Evans wrote:
> On Thu, 10 May 2001, Ruslan Ermilov wrote:
> 
> > On Wed, May 09, 2001 at 08:37:40PM -0700, Kris Kennaway wrote:
> > > On Wed, May 09, 2001 at 04:20:44AM +1000, Bruce Evans wrote:
> > > 
> > > > I think I now understand the purpose of seteuid() before seteuid().
> > > 
> > > Me too.  Thanks, all.
> > > 
> > /me still doesn't.
> > 
> > As I said, this would only be meaningful if:
> > 
> > 1)  we follow POSIX.1-200x
> 
> I'm stll not sure about this (haven't seen POSIX.any-200x...).
> 
Don't you know that the drafts are available on
www.opengroup.com/austin-l ?

> > - and -
> > 
> > 2)  the process doesn't have "appropriate privilege" initially,
> >     i.e., it's not setuid root (not the case here).
> 
> It saves you from having to know much about the current ids.  (Not a
> good reason, since you really should understand the current ids in
> set*id programs.  And you really should check that set*id() succeeded...)
> 
But the comment in the code assumes that the current IDs are that of
root.


Cheers,
-- 
Ruslan Ermilov		Oracle Developer/DBA,
ru@sunbay.com		Sunbay Software AG,
ru@FreeBSD.org		FreeBSD committer,
+380.652.512.251	Simferopol, Ukraine

http://www.FreeBSD.org	The Power To Serve
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