From owner-freebsd-security@FreeBSD.ORG  Mon Nov 21 18:40:37 2005
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Date: Mon, 21 Nov 2005 20:40:24 +0200
From: Andriy Gapon <avg@icyb.net.ua>
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To: Lowell Gilbert <freebsd-security-local@be-well.ilk.org>
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Cc: freebsd-fs@freebsd.org, freebsd-security@freebsd.org
Subject: Re: mount -u -r drops nosuid ?
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on 21/11/2005 15:43 Lowell Gilbert said the following:
> The behaviour is explicitly documented.
> 
> I think it is safer (less room to shoot yourself in the foot) to have
> the flags be exactly the ones you specified in the remount (no more,
> no less) than to have to know exactly what the state was beforehand.
> But clearly it's possible to surprise the operator either way.

Actually, somebody (Vasiliy <security@gugol.ru>) off the list tought me
 about -o current option to mount. Really useful, I wonder how I managed
to not notice it so far. Thanks Vasily!

-- 
Andriy Gapon