perms of /dev/uhid0

[Mike Tancsa]

At 10:28 AM 26/11/2003, Matt Piechota wrote:
>On Wed, 26 Nov 2003, Mike Tancsa wrote:
>
> > gastest# ls -l /dev/uhid0
> > crw-rw----  1 root  operator  122,   0 Nov 12 05:26 /dev/uhid0
> > gastest#
> >
> > Is it safe to chmod o+r /dev/uhid0 ?  Or is there a better way to drop
> > privs of the daemon yet still be able to read from the device ?
>
>Maybe I'm a bit off, but: wouldn't it be okay to 'chgrp upsmon /dev/uhid0'
>in usbd.conf, and make a upsmon user and group to run the daemon under?

I know for our setup, there is nothing else that would need to talk to this 
device so I could do something like that.  Not sure of the implications if 
someone unplugged the UPS and put their own device into the port.  The 
physical server is in a locked box, but the UPS is not. So if they somehow 
managed to blow up the daemon by overflowing a buffer, it would be nice 
that its a non root user.  However, I do not try and read more than 
sizeof(buffer) so I dont see any obvious ways...

         ---Mike