linux-kernel - Re: [PATCH -V18 05/13] vfs: Support null pathname in readlink

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Message-ID: <m38w41s5tp.fsf@linux.vnet.ibm.com>
Date:	Fri, 20 Aug 2010 20:13:14 +0530
From:	"Aneesh Kumar K. V" <aneesh.kumar@...ux.vnet.ibm.com>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	hch@...radead.org, viro@...iv.linux.org.uk, adilger@....com,
	corbet@....net, neilb@...e.de, npiggin@...e.de,
	hooanon05@...oo.co.jp, bfields@...ldses.org, miklos@...redi.hu,
	linux-fsdevel@...r.kernel.org, sfrench@...ibm.com,
	philippe.deniel@....FR, linux-kernel@...r.kernel.org
Subject: Re: [PATCH -V18 05/13] vfs: Support null pathname in readlink

On Fri, 20 Aug 2010 04:32:13 -0400, Christoph Hellwig <hch@...radead.org> wrote:
> Changing the interfaces of existing system calls to accept a NULL name
> which previously wasn't acceptable is not valid.  Even for new system
> calls I think it's a bad idea.  utimensat already has the most ugly
> code of all fs related system calls because of that.
> 

But from an interface point, it seems nice to say if the relative name
from an fd is NULL, the operation should happen on fd itself.

-aneesh
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