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How to access serial port from Android MM application ?

Question asked by Arindam Roy on Mar 21, 2017
Latest reply on Oct 28, 2018 by Benson Wu

SE Policy prevents access of serial ports by android application (by default).


I added "allow" to untrusted_app.te

allow untrusted_app tty_device:chr_file rw_file_perms;


However, still the avc denial message comes up that untrusted_app not permitted to write to tty_device.


How can this be resolved ?