Randy.Dunlap wrote:
> On Sun, 9 Jul 2006 09:45:06 -0400 Jon Smirl wrote:
>
>> On 7/9/06, Antonino A. Daplas <[email protected]> wrote:
>>> Jon Smirl wrote:
>>>> On 7/9/06, Randy.Dunlap <[email protected]> wrote:
>>>>> On Sat, 8 Jul 2006 01:56:02 -0400 Jon Smirl wrote:
>>>>>
>>>>>> On 7/8/06, Randy.Dunlap <[email protected]> wrote:
>>>>>>> I don't know how well this is an answer to your question,
>>>>>>> but I would like to be able to find a list of registered "consoles,"
>>>>>>> whether they be serial, usbserial, netconsole, lp, or whatever.
>>>>>>> /proc/tty/drivers does that partially.
>>>>>> Console is an overloaded word. Do you want to know where it is legal
>>>>>> to send system log output to, or do you want to know where you can log
>>>>>> in from? There was a thread earlier that talked a little about
>>>>>> controlling this.
>>>>> I have a working definition:
>>>>> I want to see a list of drivers that have called register_console().
>>>>>
>>>>>>> I have a patch that also does it in /proc/consoles:
>>>>>>> http://www.xenotime.net/linux/patches/consoles-list.patch
>>>>>>> Is somewhere in /sys the right place to find a list of all consoles?
>>>>>> /sys is the right place for this info but a class does not exist for
>>>>> it yet.
>>>>>
>>>>> I want a list of registered consoles. How would I express that in /sys ?
>>>> You could make the list appear as an attribute in
>>>> /sys/class/tty/console. You will need to all a little sysfs code after
>>>> the console tty device is created.
>>>>
>>> That would violate the one file, one value rule and GregKH will drop
>>> it like a hot potato.
>>>
>>> A better solution is to have /sys/class/console.
>> The one value rule is for things that can be changed.
No, it also applies to read-only attributes.
> For, example, I
>> see no problem with using the graphics/modes attribute to see a list
>> of legal modes, and then using graphics/mode to set or view the
>> currently active mode.
Yes, a lot of the fbdev attributes violate this rule. There's some
discussion in fbdev-devel list on how to overhaul this.
Why can't we have a read-only attribute that
>> displays the list of available consoles?
>
> We should be able to do that somewhere/somehow, but /sys does
> not allow for it in one file, like Tony said.
We can do it in debugfs, or do it like this in sysfs
/sys/class/console--- con0
:
--- con1
:
--- con2
Tony
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
