Messages in this thread | | | Date | Sun, 9 Jul 2006 10:35:29 -0700 | From | "Randy.Dunlap" <> | Subject | Re: Opinions on removing /proc/tty? |
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On Sun, 9 Jul 2006 09:45:06 -0400 Jon Smirl wrote:
> On 7/9/06, Antonino A. Daplas <adaplas@gmail.com> wrote: > > Jon Smirl wrote: > > > On 7/9/06, Randy.Dunlap <rdunlap@xenotime.net> wrote: > > >> On Sat, 8 Jul 2006 01:56:02 -0400 Jon Smirl wrote: > > >> > > >> > On 7/8/06, Randy.Dunlap <rdunlap@xenotime.net> 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. 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. 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.
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