RE: XSH ERN 217

["Schwarz, Konrad" <konrad.schwarz@xxxxxxxxxxx>]

> -----Original Message-----
> From: Geoff Clare [mailto:gwc@xxxxxx] 
> Sent: Friday, July 20, 2007 1:45 PM
> To: austin-group-l@xxxxxx
> Subject: XSH ERN 217
> 
> In yesterday's teleconference we agreed to resolve XSH ERN 
> 217 by adding a special constant to be used with tcsetattr() 
> to initialise a terminal to conforming settings after "first open".

The BSD 2.9.1 intro(3J) man page (on
http://www.freebsd.org/cgi/man.cgi?query=intro&apropos=0&sektion=3&manpa
th=2.9.1+BSD&format=html) describes the protocol required to be
implemented by processes that wish to modify the terminal state in a
job-controlled environment.

Although the system interfaces have changed, it could be that the
underlying protocol is still relevant.  In particular, processes are
always required to save the original terminal state before changing
anything (restoring the original state when being put in the background
and restoring the process's state when being put into the foreground).

Would the requirement that processes use a read/modify/write protocol to
update terminal settings make XSH ERN 217 obsolete?