linux-kernel - line BRK detection on ttyS0

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Message-ID: <4C9A5AD0.5070804@compro.net>
Date:	Wed, 22 Sep 2010 15:36:48 -0400
From:	Mark Hounschell <markh@...pro.net>
To:	linux-kernel@...r.kernel.org
Subject: line BRK detection on ttyS0

Does the kernel support sending a SIGINT from a line BRK on ttyS0 to a thread of a process
where the process has a controlling terminal that is NOT ttyS0 and the thread is using ttyS0
in a cfmakeraw mode? I see doc that implies that ttyS0 must be the controlling terminal but
can my thread have a controlling terminal while my main process has it's own? My thread
cannot use the \377 \0 \0 char sequence because it is receiving and transmitting 8-bit binary
data. Is there a way for the kernel to inform my thread, not my main process, of a line BRK?
Or a way for my thread to ask the kernel if a line BRK occurred on ttyS0?

Thanks and regards
Mark

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