From: "H. Peter Anvin" <hpa@zytor.com>
To: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] 2.5.72: follow_mount / follow_link
Date: 24 Jun 2003 08:42:56 -0700 [thread overview]
Message-ID: <bd9ri0$fn2$1@cesium.transmeta.com> (raw)
In-Reply-To: 20030624145418.GP6754@parcelfarce.linux.theplanet.co.uk
Followup to: <20030624145418.GP6754@parcelfarce.linux.theplanet.co.uk>
By author: viro@parcelfarce.linux.theplanet.co.uk
In newsgroup: linux.dev.kernel
>
> On Tue, Jun 24, 2003 at 10:41:59AM -0400, Mike Waychison wrote:
>
> > The changes made in fs/namei.c@1.42 break this behaviour iff the dentry
> > being follow_link'ed is a root dentry. This is becauseo
>
> ... mixing symlinks and mounting is ripe with very ugly races and corner
> cases. Not allowed - symlink can't be a mountpoint or a mounted object.
>
Unfortunately, this is probably the only realistic way to ever get
working direct mounts, so please don't dismiss it out of hand.
follow_link on a directory has turned out to be a really useful way of
doing automounting.
-hpa
--
<hpa@transmeta.com> at work, <hpa@zytor.com> in private!
"Unix gives you enough rope to shoot yourself in the foot."
Architectures needed: ia64 m68k mips64 ppc ppc64 s390 s390x sh v850 x86-64
next prev parent reply other threads:[~2003-06-24 15:31 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-06-24 14:41 [PATCH] 2.5.72: follow_mount / follow_link Mike Waychison
2003-06-24 14:54 ` viro
2003-06-24 15:42 ` H. Peter Anvin [this message]
2003-06-24 23:50 ` jlnance
2003-06-25 0:00 ` H. Peter Anvin
2003-06-25 0:07 ` H. Peter Anvin
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