Date: Tue, 6 May 2003 16:02:19 +0100
From: viro@parcelfarce.linux.theplanet.co.uk
To: Alex Riesen <alexander.riesen@synopsys.COM>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Fwd: allow rename to "--bind"-mounted filesystem
Message-ID: <20030506150219.GM10374@parcelfarce.linux.theplanet.co.uk>
References: <20030506100435.GH890@riesen-pc.gr05.synopsys.com> <20030506143026.GL10374@parcelfarce.linux.theplanet.co.uk> <20030506143459.GA25606@riesen-pc.gr05.synopsys.com>
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On Tue, May 06, 2003 at 04:34:59PM +0200, Alex Riesen wrote:
> viro@parcelfarce.linux.theplanet.co.uk, Tue, May 06, 2003 16:30:26 +0200:
> > On Tue, May 06, 2003 at 12:04:35PM +0200, Alex Riesen wrote:
> > > Hi,
> > > i just came over this patch, and wondered why is it missing
> > > in both 2.4 and 2.5 (the code in do_rename is identical in both
> > > kernels).
> > > 
> > > Are such renames really not allowed, or was it just fixed differently?
> > 
> > Such remames are _deliberately_ not allowed.
> > 
> 
> because that would be against semantics of a mounted filesystem?
> (which, in turn, would break something)

Binding a subtree creates a sandbox of sorts.  You can bind a bunch of
subtrees of the same fs into namespace and have normal protection
against rename and link between them.
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