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

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Message-ID: <20100820083213.GB10039@infradead.org>
Date:	Fri, 20 Aug 2010 04:32:13 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
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

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.

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