Messages in this thread | | | Date | Mon, 17 Mar 2003 19:56:07 +0000 | From | Jamie Lokier <> | Subject | Re: Linux-2.4.20 modem control |
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Richard B. Johnson wrote: > Now, the hang-up sequence appears to be queued. It can (and does) > happen after the previous terminal owner has expired and another > owner has opened the device. This makes /dev/ttyS0 useless for remote > log-ins. > > It needs to be, that a 'close()' of a terminal, configured as a modem, > cannot return to the caller until after the DTR has been lowered, and > preferably, after waiting a few hundred milliseconds. Without this, > once logged in, the modem will never disconnect so a new caller > can't log in.
Better would be if the hang-up sequence is still queued, but a new open() is delayed until the hangup has completed.
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