Date: Wed, 23 Nov 2005 18:24:50 +0100
From: Marc Koschewski <marc@osknowledge.org>
To: Jon Smirl <jonsmirl@gmail.com>
Cc: Marc Koschewski <marc@osknowledge.org>, Vojtech Pavlik <vojtech@suse.cz>,
       Greg KH <greg@kroah.com>, lkml <linux-kernel@vger.kernel.org>,
       rmk+lkml@arm.linux.org.uk
Subject: Re: Christmas list for the kernel
Message-ID: <20051123172449.GF6970@stiffy.osknowledge.org>
References: <9e4733910511230643j64922738p709fecd6c86b4a95@mail.gmail.com> <20051123150349.GA15449@flint.arm.linux.org.uk> <9e4733910511230712y2b394851rc17fa71c6f9c6ecf@mail.gmail.com> <20051123155650.GB6970@stiffy.osknowledge.org> <20051123160520.GH15449@flint.arm.linux.org.uk> <9e4733910511230837v1519d3b3t28176b1fd6017ffc@mail.gmail.com> <20051123164907.GA2981@ucw.cz> <9e4733910511230859y3879e65fp927a7aa4d71d8fee@mail.gmail.com> <20051123170508.GE6970@stiffy.osknowledge.org> <9e4733910511230913y7fe5f9cfw99bfbb077ea9c87a@mail.gmail.com>
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* Jon Smirl <jonsmirl@gmail.com> [2005-11-23 12:13:06 -0500]:

> On 11/23/05, Marc Koschewski <marc@osknowledge.org> wrote:
> > * Jon Smirl <jonsmirl@gmail.com> [2005-11-23 11:59:27 -0500]:
> > > Another would be to have a little user space daemon that listened to
> > > the pty creation, and then mknod the tty nodes as need and pipe the
> > > data through. That would be a first step to moving to a user space
> > > console implementation.
> >
> > Shouldn't this be udev then? I hear people scream when 'some deamon'
> > created a device in /dev. Was it udev? Was is 'ttydevd'? Even
> > 'ondemanddevd'?
> 
> udev listens to /sys/class for it's indications on when to create a node.
> 
> The tty daemon would need to listen for pty creation to tell it when
> to create a node. Then after it creates the node it needs to maintain
> a pipe between the pty and tty. This is a lot different than what udev
> does.

I didn't mean to _say_ that it's the same. I just meant to _ask_ how you
are going to tell the users which daemon created what devices in /dev. I
would rather do the 'udev appoach' then (extend it in other words) so
that there's just one daemon that creates device nodes.

Marc
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