[udev] how to set a rule depending on the manufacturer or the serial number?

For example, how to adapt the lineSUBSYSTEM=="usb", SYMLINK+="myusb"
to filter according to the manufacturer or the serial number? Adding ATTR{Manufacturer}==6989
or ATTRS{Manufacturer}==6989
didn't work.
Also, the Nautilus call didn't work neither:SUBSYSTEM=="usb", SYMLINK+="myusb", RUN+="/usr/bin/nautilus"
Any idea what goes wrong?
Comments
-
For the serial number, it's
ATTR{serial}=="serialnumber"
as shown with commandudevadm info --attribute-walk --name /dev/myusb"
0 -
And for the manufacturer, it's
ATTR{manufacturer}=="number"
0 -
I was having an interesting time changing the usb-key's name as it was busy with systems-udev, but that is another day.
Here is an example of some udev commands to write a file. There is the udev-rule file and two tiny scripts. The idea was write to a file if the usb-key was plugged in or pulled out.98-usb-stick.rules
#
#
#
used "udevadm info -a /dev/sdb > /tmp/udev"
to list related device information
#
skip to end if not a block device
#
SUBSYSTEM!="block", GOTO="endoffile
#look for the root device, not the partitions
maybe add in "change" with "add"
KERNEL=="sd?", ACTION=="add" \
, ATTRS{manufacturer}=="Kingston"\
, ATTRS{product}=="DataTraveler 2.0"\
, ATTRS{serial}=="5B870E000068"\
, RUN+="/usr/local/bin/usb-on.sh"KERNEL=="sd?", ACTION=="remove"\
, ATTRS{manufacturer}=="Kingston"\
, ATTRS{product}=="DataTraveler 2.0"\
, ATTRS{serial}=="5B870E000068"\
, RUN+="/usr/local/bin/usb-off.sh"LABEL="endoffile"
usb-off.sh
!/bin/bash
echo "usb is offline " >>/tmp/usb.out
/bin/date >> /tmp/usb.outusb-on.sh#!/bin/bash
echo "usb is offline " >>/tmp/usb.out
/bin/date >> /tmp/usb.outYours should be similar.
Regards, Lee0 -
Hi Lee,
Your scripts work great, thank you very much for the trick.
At the end I tried to add/usr/bin/nautilus &
but it doesn't launch, there must be something I don't know about Xorg that prevents it to do so...
Regards, Thomas0 -
Tried
xdg-open /tmp/usb.out
at the end but it doesn't work neither0 -
I'm not 100 percent sure in this instance, but running Desktop GUI commands won't work when you launch things non-interactively from a script not attached to a terminal. This has nothing to do with udev, just try it from a bash script. They have to be run from the right context.
0 -
In this thread, it says to use
ENV{SYSTEMD_WANTS}=="some.service"
: https://bbs.archlinux.org/viewtopic.php?id=2065550 -
Hi @thomas.bucaioni ,
It seems SYSTEMD_WANTS is intended for other stuff. From the udev(7) man page:
In order to activate long-running processes from udev rules,
provide a service unit and pull it in from a udev device
using the SYSTEMD_WANTS device property. See
systemd.device(5) for details.Perhaps you can try with the RUN key, as shown in the man page:
RUN{type}
Specify a program to be executed after processing of all the
rules for the event. With "+=", this invocation is added to
the list, and with "=" or ":=", it replaces any previous
contents of the list. Please note that both "program" and
"builtin" types described below share a common list, so
clearing the list with ":=" and "=" affects both types.- type may be:
- "program"
- Execute an external program specified as the assigned
- value. If no absolute path is given, the program is
- expected to live in /usr/lib/udev; otherwise, the
- absolute path must be specified.
- This is the default if no type is specified.
I understand you are playing around with udev, because this doesn't seem to be a real case example.
Regards,
Luis.0 -
Hi @luisviveropena,
WithSUBSYSTEM=="usb", ATTR{serial}=="number", SYMLINK+="myusb", RUN+="/usr/bin/nautilus", ACTION=="add"
it doesn't work neither.
But yes, it's not a real case example indeed... It was to try to do the same as in Windows, no big deal
Regards,
Thomas0 -
This works: https://bbs.archlinux.org/viewtopic.php?pid=1709570#p1709570
In Lee's script, it takes to addecho 'nautilus' >> execme.sh
0
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