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Full Discussion: Discover the program that use serial port (Sherlock Holmes Case)
Operating Systems AIX Discover the program that use serial port (Sherlock Holmes Case) Post 303000237 by bakunin on Friday 7th of July 2017 04:44:21 AM
Old 07-07-2017
A few other ideas:

- there is only a limited number of ttys. Try the fuser command on all of them to find out which process(es) is(are) using it. The examine the found processes.

- if you feel confident enough you can also use kdb (kernel debugger) to examine the processes properties although you will have to find out the details yourself, i don't have the documentation at hand.

- receiving data from a tty means there has to be a physical serial connection to the server. check that and find out the corresponding tty device to further limit the number of devices to examine if you have physical access to the server.

I hope this helps.

bakunin
Last edited by bakunin; 07-08-2017 at 09:07 AM..
This User Gave Thanks to bakunin For This Post:
trevian3969
 

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LEARN ABOUT CENTOS

tapset::tty

tapset::tty(3stap)														tapset::tty(3stap)

NAME

       tapset::tty - systemtap tty tapset

DESCRIPTION

       tty.open
	      Called when a tty is opened

	       See probe::tty.open(3stap)
	       for details.

       tty.release
	      Called when the tty is closed

	       See probe::tty.release(3stap)
	       for details.

       tty.resize
	      Called when a terminal resize happens

	       See probe::tty.resize(3stap)
	       for details.

       tty.ioctl
	      called when a ioctl is request to the tty

	       See probe::tty.ioctl(3stap)
	       for details.

       tty.init
	      Called when a tty is being initalized

	       See probe::tty.init(3stap)
	       for details.

       tty.register
	      Called when a tty device is registred

	       See probe::tty.register(3stap)
	       for details.

       tty.unregister
	      Called when a tty device is being unregistered

	       See probe::tty.unregister(3stap)
	       for details.

       tty.poll
	      Called when a tty device is being polled

	       See probe::tty.poll(3stap)
	       for details.

       tty.receive
	      called when a tty receives a message

	       See probe::tty.receive(3stap)
	       for details.

       tty.write
	      write to the tty line

	       See probe::tty.write(3stap)
	       for details.

       tty.read
	      called when a tty line will be read

	       See probe::tty.read(3stap)
	       for details.

SEE ALSO

	 probe::tty.open(3stap),    probe::tty.release(3stap),	  probe::tty.resize(3stap),    probe::tty.ioctl(3stap),   probe::tty.init(3stap),
       probe::tty.register(3stap),  probe::tty.unregister(3stap),  probe::tty.poll(3stap),  probe::tty.receive(3stap),	probe::tty.write(3stap),
       probe::tty.read(3stap),	stap(1), stapprobes(3stap)

IBM
									---							tapset::tty(3stap)
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