Asri-unix.400
net.unix-wizards
utzoo!decvax!ucbvax!menlo70!sri-unix!MBM@MIT-XX
Sat Jan  2 22:10:30 1982
line disc
From: Michael B McIlrath <MBM@MIT-XX>
Does anyone believe he really understands how the tty line
disciplines are supposed to be used?  Before everyone jumps
to answer, my specific questions are:
1) are the entries in linesw supposed to be called INSTEAD 
   of, or IN ADDITION TO, the "default" ones (i.e., ttymumble)
   by the hardware device handlers?  In particular , most of the
   drivers I have seen that use line disciplines first call the
   linesw entry for ioctl, then  call ttioctl if the linesw entry
   returned non-zero.  The linesw entry itself is usually nullioctl.
   Why?

2) Werent there some special ioctl's (DIOCGET/SET ???? etc) that
   were intended to be specific to the line discipline?  What
   special actions are supposed to be taken when line disciplines
   are changed?  

--mike
-------

-----------------------------------------------------------------
 gopher://quux.org/ conversion by John Goerzen <jgoerzen@complete.org>
 of http://communication.ucsd.edu/A-News/


This Usenet Oldnews Archive
article may be copied and distributed freely, provided:

1. There is no money collected for the text(s) of the articles.

2. The following notice remains appended to each copy:

The Usenet Oldnews Archive: Compilation Copyright (C) 1981, 1996 
 Bruce Jones, Henry Spencer, David Wiseman.