[systemd-devel] UDEV rule not matching...why?

[Mantas Mikulėnas]

Did you place your rules in the correct order? ENV{ID_USB_INTERFACE_NUM} is
set by usb_id in 50-udev-default.rules, so it would be available in
60-foo.rules but not in 20-foo.

On Wed, Oct 9, 2024, 16:29 Daniel Spannbauer <ds at marco.de> wrote:

> Hello,
>
>
> our own device (see attachement for udevadm info --attribute-walk)
> should have a symlink.
>
> Therefore I create the following udev rule:
>
>   SUBSYSTEM=="tty", KERNEL=="ttyACM[0-9]*",
> ENV{ID_USB_INTERFACE_NUM}=="02", ATTRS{idVendor}=="1dfb",
> ATTRS{idProduct}=="0010", SYMLINK+="2a"
>
> But a "udevadm test /sys/class/tty/ttyACM1" shows, that there is no
> match, a symlink is not created. If I remofe the "ENV" pattern, the rule
> is working.
>
> Any idea, whats wrong here?
>
> System is opensuse LEAP 15.5, RPM-VErsion of UDEV is 249.16-150400.8.25.7
>
>
> Best regards
>
>
> Daniel
>
>
> --
> Daniel Spannbauer                             Systemadministration
> marco Systemanalyse und Entwicklung GmbH      Tel   +49 8333 9233-27 Fax
> -11
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