Subject: Re: COM_SW_SOFTCAR handling (Was: Re: The pppd blocking thing...)
To: Duncan McEwan <>
From: Chris G. Demetriou <>
List: current-users
Date: 07/15/1994 19:12:57
> question then becomes: why have both?

'clocal' and 'softcar' are supposed to be used by different things.

the former is when you want the line to "default" to seeming like
carrier is detected, but want it to be able to be disabled.
i.e. you could e.g. tip out then stty -clocal that line.

softcar is supposed to be used _only_ for hardwired terminals
that don't provide DCD themselves.  it is _NOT_ meant to be used
with modems.  it cannot be disabled for an open line.

the SW flags are settable only by root, and provide a default
for the line, on open.  'softcar' can't be disabled by the user of
the line, while the 'clocal' (and the other flags, 'crtscts' and
'mdmbuf' can be).