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From: Richard Henderson <rth@redhat.com>
To: Andrea Arcangeli <andrea@suse.de>
Cc: Linus Torvalds <torvalds@transmeta.com>,
	Ingo Molnar <mingo@elte.hu>,
	linux-kernel@vger.kernel.org
Subject: Re: unregistered changes to the user<->kernel API
Date: Thu, 14 Jun 2001 10:32:49 -0700	[thread overview]
Message-ID: <20010614103249.A28852@redhat.com> (raw)
In-Reply-To: <20010614191219.A30567@athlon.random> <20010614191634.B30567@athlon.random> <20010614192122.C30567@athlon.random>
In-Reply-To: <20010614192122.C30567@athlon.random>; from andrea@suse.de on Thu, Jun 14, 2001 at 07:21:22PM +0200

On Thu, Jun 14, 2001 at 07:21:22PM +0200, Andrea Arcangeli wrote:
> Richard are you sure we can break O_NOFOLLOW and still expect the machine to
> boot?
[uses in glibc]

Yes, I saw those.  What is the effect of O_NOFOLLOW?  To not
follow symbolic links when opening the file.  If you open a
regular file, in effect nothing happens.  Moreover, if these
opens were not finding files now, the system wouldn't work.

So: the effect, I suppose, is (1) disabling some security
within glibc, and (2) making these accesses slower since they
will be considered O_DIRECT after the change.

Which doesn't seem that life-threatening to me.


r~

  reply	other threads:[~2001-06-14 17:33 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-06-14 17:12 unregistered changes to the user<->kernel API Andrea Arcangeli
2001-06-14 17:16 ` Andrea Arcangeli
2001-06-14 17:21   ` Andrea Arcangeli
2001-06-14 17:32     ` Richard Henderson [this message]
2001-06-14 17:47       ` Andrea Arcangeli
2001-06-14 18:16         ` Andrea Arcangeli
2001-06-14 18:17         ` Richard Henderson
2001-06-14 18:10       ` Alexander Viro
2001-06-14 17:25 ` Jeff Garzik
2001-06-14 17:44   ` Andrea Arcangeli
2001-06-14 17:52     ` Jeff Garzik
2001-06-14 18:03       ` Andrea Arcangeli
2001-06-14 18:11         ` Alan Cox
2001-06-14 18:27           ` Andrea Arcangeli
2001-06-14 21:43           ` Albert D. Cahalan

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