On Thu, Feb 25, 2010 at 09:42:15AM +0000, T. Horsnell wrote:
> Hi all,
> I need to set up a custom rule to give me mode 666 on a custom USB device
> (or on all the otherwise un-handled USB devices).
> I used to do this (in FC9) by modifying ruleset 50-udev-default.rules at
> the libusb entry (I know this was not the 'correct' way, but I could never
> understand udev enough to work out what *was* the correct way).
>
> Now that I've moved to FC12, this 50- rulest doesnt exist, and I cant find
> where the libusb stuff is now handled. Can someone please tell me how to
> correctly add a custom rule. Presumably I have to use a filename which causes
> it to be executed in the right order. Does udev stop processing subsequent
> rules files when it hits a rule which matches?
>
> In ruleset 50-udev-default.rules I used to have:
>
> ###SUBSYSTEM=="usb", ACTION=="add", ENV{DEVTYPE}=="usb_device", NAME="bus/usb/$env{BUSNUM}/$env{DEVNUM}", MODE="0644"
> SUBSYSTEM=="usb", ACTION=="add", ENV{DEVTYPE}=="usb_device", NAME="bus/usb/$env{BUSNUM}/$env{DEVNUM}", MODE="0666"
That rule has moved into /lib/udev/rules.d/. And AFAIK udev reads all
rules in and evaluates all the matches in order. Honestly I'm not an
expert, so don't take this as gospel, but I'm pretty sure you have to
explicitly do something to make udev bail completely partway through
those evaluations.
--
Paul W. Frields http://paul.frields.org/
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