linux-kernel - Re: [RFC/PATCH] revokeat/frevoke system calls V5

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Message-ID: <20070226194131.2c4e4a47@lxorguk.ukuu.org.uk>
Date:	Mon, 26 Feb 2007 19:41:31 +0000
From:	Alan <alan@...rguk.ukuu.org.uk>
To:	Zach Brown <zab@...bo.net>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	Pekka Enberg <penberg@...helsinki.fi>,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	hch@....de
Subject: Re: [RFC/PATCH] revokeat/frevoke system calls V5

> I'm not sure.  Turning, for example, the statat(dir_fd, name == NULL)  
> error case into fstat(dir_fd) sounds like a way for apps, admittedly  
> buggy ones, to be surprised.  Maybe libc would be exptected to catch  
> the error before performing the shared system call?

At that point would it not be cheaper to have two system calls, the table
cost isn't very large.
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