linux-kernel - Re: [PATCH] kevent_user: remove non-chardev interface

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Message-ID: <20060822122731.GA2994@infradead.org>
Date:	Tue, 22 Aug 2006 13:27:31 +0100
From:	Christoph Hellwig <hch@...radead.org>
To:	Evgeniy Polyakov <johnpol@....mipt.ru>
Cc:	Christoph Hellwig <hch@...radead.org>,
	lkml <linux-kernel@...r.kernel.org>,
	David Miller <davem@...emloft.net>,
	Ulrich Drepper <drepper@...hat.com>,
	Andrew Morton <akpm@...l.org>, netdev <netdev@...r.kernel.org>,
	Zach Brown <zach.brown@...cle.com>
Subject: Re: [PATCH] kevent_user: remove non-chardev interface

On Tue, Aug 22, 2006 at 04:17:10PM +0400, Evgeniy Polyakov wrote:
> I personally do not have objections against it, but it introduces
> additional complexies - one needs to open /dev/kevent and then perform
> syscalls on top of returuned file descriptor.

it disalllows

int fd = sys_kevent_ctl(<random>, KEVENT_CTL_INIT, <random>, <random>);

in favour of only

int fd = open("/dev/kevent", O_SOMETHING);

which doesn't seem like a problem, especially as I really badly hope
no one will use the syscalls but some library instead.

In addition to that I'm researching whether there's a better way to
implement the other functionality instead of the two syscalls.  But I'd
rather let code speak, so wait for some patches from me on that.

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