Port owner and group using dgap driver under Linux.

USB Devices
1

Good morning,

An Acceleport 8r 920 has been installed under Fedora 7 using th dgap driver. Loop back testing passed.

One thing I would like to change is the group on the ports ( ttya01 to ttya08 ). After a reboot the group and owner are both root. If someone can help me out, it would be appreciated.

Thanks,
Robert

2

If your system is using UDEV, you will want to set the Group assignments using udev rules. The following link looks informative:

http://reactivated.net/writing_udev_rules.html#ownership

3

Thanks for mentioning udev and the URL.

The file /etc/udev/rules.d/10-dgap.rules was edited. A single line was changed from
KERNEL==“tty_dgap*”, PROGRAM=“/usr/sbin/dgap_udev %k”, NAME=“%c”, OPTIONS+=“last_rule”
to
KERNEL==“tty_dgap*”, PROGRAM=“/usr/sbin/dgap_udev %k”, NAME=“%c”, OPTIONS+=“last_rule”, GROUP=“uucp”

After a reboot the ports have a group of uucp.

Should any changes be made to the line
KERNEL==“pr_dgap*”, PROGRAM=“/usr/sbin/dgap_udev %k”, NAME=“%c”, OPTIONS+=“last_rule”

Once again thank you for pointing a direction.
Robert

4

Glad this worked out.

The “pr” device does not need to be configured unless you are using transparent printing (printing to a printer attached to a terminal/tty).