Hello all,
opening a file (serial port) with O_NONBLOCK and subsequently setting
termios VMIN and VTIME > 0 makes read() never ever return any data
(returns EAGAIN indefinitely).
Don't ask my why one would want to do something like this but apparently
the "screen" program think this is a good way of doing things...
Nevertheless not returning any data ever seems wrong.
Any insight on how it is supposed to work is welcome.
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