Re: Generic battery interface

Greg KH
2006-07-30T08:59:27Z

On Fri, Jul 28, 2006 at 12:10:43PM -0400, Dmitry Torokhov wrote:
> On 7/28/06, Shem Multinymous <multinymous@gmail.com> wrote:
> >On 7/28/06, Dmitry Torokhov <dmitry.torokhov@gmail.com> wrote:
> >> 4) sysfs - all capabilities, IDs, etc for input devices exported there
> >as well.
> >
> >Forgive my ignorance, but how do I conncet a sysfs directory with a /dev
> >device?
> >So far the only way I found is to compare /sys/whatever/dev with the
> >major+minor of the dev file, which requires brute-force enumeration on
> >at least one side.
> >
>
> Can't we have udev make a symlink when it creates device node?

No, ick, why would you want that?

Just look at the "dev" file in sysfs, which shows the major:minor
number.

Or just look at the directory that you are in, and that's almost always
the /dev node name.

For example, /sys/block/sda/sda1/ is /dev/sda1.
/sys/class/tty/ttyS1 is /dev/ttyS1.

It's usually not that difficult to do the mapping :)

thanks,

greg k-h