[Toybox] Pondering mdev...
Rob Landley
rob at landley.net
Tue Aug 20 13:08:37 PDT 2013
On 08/19/2013 11:13:15 PM, Isaac wrote:
> Hello,
> I've noticed that in mdev coldplug (mdev -s) is supported, but
> hotplug is
> TODO.
> I also note that an optional (busybox) fourth field is not supported.
> This is >dir/ to link or =dir/ to move the device into /dev/dir/;
>
> mice root:root 0766 =input/
> #creates /dev/input/mice
>
> is one example.
> Without these mdev creates a flat directory not grouped by subsystem.
>
> I'm thinking about poking at mdev and seeing if I can add these
> features.
> Any thoughts on this (higher priorities, hints as to how to proceed)?
These days mdev should depend on devtmpfs being there, so I'm not sure
how much is left for it to do. That handles populating the directory,
making entries show up and go away, getting permissions and even
ownership right (albeit for a hardwired list of uid/gid that Greg KH
thought was a good idea). The kernel is now handling firmware loading.
At the design level: what is mdev needed for?
Rob
1377029317.0
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