For several years I successfully ran RealPort on a Debian 8 (jessie) machine. I am now trying to do the same on Debian 10 (buster). I have downloaded, built, and installed 1.9.40 on the new machine.
One change I see is the -g group requires an integer where before I put in the name. Notwithstanding that change, the following is what I used to run to initialize a virtual device.
sudo dgrp_cfg_node -v -p 772 -g 20 init AA 126.96.36.199 1
If I do the same now the device is created, but it does not reflect the desired group, or a file permission of 660.
lrwxrwxrwx 1 root root 13 Sep 15 09:50 /dev/ttyAA00 -> tty_dgrp_AA_0
crw------- 1 root root 244, 0 Sep 15 10:10 /dev/tty_dgrp_AA_0
If I run my script as sudo it works. If I manually change the ownership and permission of the device to
crw-rw---- 1 root dialout 244, 0 Sep 15 10:10 /dev/tty_dgrp_AA_0
I can run it as a regular user that is part of the dialout group.
I have tried changing values in /etc/dgrp.backing.store
How is it configured so the virtual devices are created with permissions 660 and group dialout?