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<H1>[Mageia-discuss] Making the serial port available to all</H1>
<B>Renaud (Ron) Olgiati</B>
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TITLE="[Mageia-discuss] Making the serial port available to all">renaud at olgiati-in-paraguay.org
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<I>Mon Sep 17 16:05:50 CEST 2012</I>
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<PRE>On Monday 17 Sep 2012 08:44 my mailbox was graced by a message from Frank
Griffin who wrote:
><i> > I think I finally found a simpler solution:
</I>
><i> You should enter a bug report for this, as there is probably more going
</I>><i> on here than simple Unix permissions.
</I>
><i> When dinosaurs roamed the earth, Unix systems were multi-user, and it
</I>><i> was expected that the sysadmin would use the groups to parcel out device
</I>><i> permissions. As Linux distros have moved more and more towards
</I>><i> single-user systems, permission mechanisms have changed.
</I>
><i> /dev devices are now created dynamically (as already pointed out)
</I>><i> according to rules supplied by the packages you install. The theory is
</I>><i> that you only end up creating /dev nodes for devices you will actually
</I>><i> use, rather than the cast of thousands that used to be created
</I>><i> statically for every possible need.
</I>
><i> And access to common devices like CD drives and the audio system is (I
</I>><i> believe) done dynamically now as well, by packages like polkit and
</I>><i> systemd, which take their configuration from places other than /etc/group.
</I>
><i> As a USB tty is not a common device, it may well have fallen through the
</I>><i> cracks of these new mechanisms, and should probably be addressed there.
</I>
I beg to disagree with the last, given that the group attribution for
/dev/ttyUSB0 (for the USB serial port adapter) is the same as that for the
common or garden serial ports at /dev/ttyS*
All of those belong to the dialout group, probably leftover from the days when
the serial ports conected to the modem (?).
Filled the bug report.
Cheers,
Ron.
--
Deux étions, et n'avions qu'un coeur.
-- François Villon
-- <A HREF="http://www.olgiati-in-paraguay.org">http://www.olgiati-in-paraguay.org</A> --
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