Re: [hylafax-users] Configuration change for USB modem

[Laurent LEGENDRE <geminux50@xxxxxxxxx>]

Here is an excerpt from my configuration

looking at device '/class/tty/ttyACM6':
    KERNEL=="ttyACM6"
    SUBSYSTEM=="tty"
    DRIVER==""

  looking at parent device '/devices/pci0000:00/0000:00:1c.1/0000:05:00.0/0000:06:00.0/usb9/9-2/9-2:2.0':
    KERNELS=="9-2:2.0"
    SUBSYSTEMS=="usb"
    [......]

  looking at parent device '/devices/pci0000:00/0000:00:1c.1/0000:05:00.0/0000:06:00.0/usb9/9-2':
    KERNELS=="9-2"
    SUBSYSTEMS=="usb"
    DRIVERS=="usb"
    [......]
    ATTRS{busnum}=="9"
    ATTRS{devnum}=="2"
    [......]
    ATTRS{manufacturer}=="Multi-Tech Systems, Inc."
    ATTRS{product}=="MultiModemUSB"

And the associated udev rule :
KERNEL=="ttyACM*", KERNELS=="9-2", SYMLINK+="myfax01"

KERNEL attribute is the device itself.
KERNELS attribute corresponds to one of the parent device.
SYMLINK attribute creates a symbolic link to the value of KERNEL.
You may have to use DEVPATH instead of KERNELS. See your udev manual

The device and symlink rights :
crw-------  1 uucp dialout 166,   4 nov 24 08:14 ttyACM6
lrwxrwxrwx  1 root root           7 nov 10 12:46 myfax01 -> ttyACM6

It works well with Debian Lenny amd64, hylafax-server 4.4.4 from the debian repo, and udev v125