30 Mar
2017
30 Mar
'17
6:48 p.m.
Norman Wilson <norman(a)oclsc.org> wrote:
Josh Good:
Which brings up a question I have: why didn't UNIX implement ethernet
network interfaces as file names in the filesystem? Was that "novelty" a
BDS development straying away from AT&T UNIX?
======
Remember that UNIX has long been a family of systems;
it's risky to make blanket statements!
The following is from memory; I haven't looked at this
stuff for a while and am a few kilometers from my
manuals as I type this. I can dig out the complete
story later if anyone wants it; for now, this is just
the flavour and the existence proof.
Research UNIX, once it supported Ethernet at all, did
so using devices in /dev; e.g. /dev/qe0[0-7] were the
This is done on a UNIX implementation that uses STREAMS.
SVr4 is such a UNIX.
lrwxrwxrwx 1 root root 29 Mrz 3 2009 /dev/bge ->
../devices/pseudo/clone@0:bge
lrwxrwxrwx 1 root root 38 Mrz 3 2009 /dev/bge0 ->
../devices/pci@0,0/pci1462,6710@b:bge0
/dev/bge is a clone device and allows to access and plumb further devices.
/dev/bge0 is the first Broadcom Gigabit Ethernet device.
Jörg
--
EMail:joerg@schily.net (home) Jörg Schilling D-13353 Berlin
joerg.schilling(a)fokus.fraunhofer.de (work) Blog: http://schily.blogspot.com/
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