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Re: config(5) break down

On Sun, Mar 21, 2010 at 1:43 AM, Matt Thomas <> 
> On Mar 20, 2010, at 9:06 AM, Masao Uebayashi wrote:
>> On Sun, Mar 21, 2010 at 1:01 AM, Matt Thomas 
>> <> wrote:
>>> I'm talking about <maj, min> to device.  How, as a user, do I know what 
>>> actual tty does /dev/ttyXX open?
>> If we make tty(4) a device, we can lookup its parent by drvctl(8)
>> (extend it to return dv_parent).
> That is user unfriendly.  The name in /dev should tell me enough to know what 
> it is.
> I should not have to invoke another command to figure that out.

You can use scripts and symlinks.

>> My question is - is this the only reason why each serial driver has
>> its own device entry?
> It is the primary reason.  And it's a good reason.

I disagree, but this is a matter of taste.

I'm fine if you can outline tty/serial drivers structure and strategy
of MP-safe locking.


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