On 11/14/22 14:11:21, Alan Altmark wrote:
...
2. Linux doesn't detect a reconnect event, so it doesn't know to re-query the
device and adjust any 'views' that have been created.
Is it a basic limitation of UNIX that there's no way to connect a descriptor
to a running process? How does XEDIT->CMS->CP do it? I suspect the console
is never disconnected, just put in a dormant state. I believe when I
reconnect with a different geometry XEDIT fields an I/O error and causes a
WSF Query to be issued and processes the result.
SIGHUP? SIGTSTP? SIGWINCH? IIRC, I modified a SIGGWINCH handler long ago,
in a curses application. I think I caught the signal, queried the terminal
geometry, and updated some global variables.
TSO can't deal with it. An endless sequence of I/O errors and ops needs
to cancel the session.
--
gil
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