linux-kernel - Re: *at syscalls for xattrs?

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Message-ID: <469BD7B7.30009@zytor.com>
Date:	Mon, 16 Jul 2007 13:40:23 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Jeff Garzik <jeff@...zik.org>
CC:	Miklos Szeredi <miklos@...redi.hu>, jeremy@...p.org,
	jengelh@...putergmbh.de, viro@....linux.org.uk, nmiell@...cast.net,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: *at syscalls for xattrs?

Jeff Garzik wrote:
>>
>> Well, as Jeremy pointed out, in the absence of threads you can do the
>> same thing with fchdir(), however, that's much more of a hack.
> 
> My posixutils project (coreutils replacement) used fchdir(2), but that
> still doesn't get you 100% race-free.  It gets you close, yes.
> 

I guess you're horked in the case where a single system call (e.g.
rename()) needs more than one pathname.  Yet another reason why a single
cwd isn't enough.

	-hpa
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