Help with setting permissions for usb device by udev

English Hardware
1

Hi,
I’ve been trying to set permissions for an usb-device by udev. However, I can set the GROUP and/or OWNER correctly, but MODE seems to have no effect. This is the rule I’ve been using:


SUBSYSTEM=="usb", ATTR{manufacturer}=="Suunto", ATTR{idVendor}=="0403", ATTR{idProduct}=="f680", GROUP="kvm", MODE="0664"

This results in:


blackbox:/etc/udev/rules.d # ls -al /dev/bus/usb/001
total 0
drwxr-xr-x 2 root root      80 Feb 19 01:07 .
drwxr-xr-x 7 root root     140 Feb 18 15:58 ..
crw-r--r-- 1 root root 189,  0 Feb 18 15:58 001
crw-r--r-- 1 root kvm  189, 17 Feb 19 01:07 018

So the group is correct but the permissions aren’t. Does anyone know that is there something wrong in the udev rule or am I missing something else?

2

You can only set the permissions on a USB device if it has a Linux file format. Otherwise, you are restricted to changing the permissions globally. However, as I assume you won’t want the same restricted permissions for every USB device, that is probably inadvisable.

3

Ah, ok. Well, setting myself as OWNER suffices so, I’ll just work with that. Thanks!