Bug 142023 - /proc/bus/usb in udev environment
Summary: /proc/bus/usb in udev environment
Status: RESOLVED FIXED
Alias: None
Product: SUSE Linux 10.1
Classification: openSUSE
Component: Basesystem (show other bugs)
Version: Alpha 4
Hardware: Other Other
: P5 - None : Normal (vote)
Target Milestone: ---
Assignee: Kay Sievers
QA Contact: E-mail List
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Reported: 2006-01-09 12:27 UTC by Ludwig Nussel
Modified: 2006-01-10 16:31 UTC (History)
1 user (show)

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Found By: Other
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Marketing QA Status: ---
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Description Ludwig Nussel 2006-01-09 12:27:26 UTC 
When running a script in response to an udev usb add event the environment contains DEVICE=/proc/bus/usb/..., I guess it should be /dev/bus/usb/... now.
Comment 1 Kay Sievers 2006-01-09 12:40:43 UTC 
No, that's a kernel added value. It was stupid in the first place to have /proc included and it should not longer be used. If usbfs is not configured in the kernel, which is the long-term goal, it will just go away.
Comment 2 Ludwig Nussel 2006-01-09 12:47:06 UTC 
I use this property to find bus and device number so I can pass them to lomoco (new package, just submitted). How do I determine the numbers without $DEVICE?
Comment 3 Kay Sievers 2006-01-09 13:19:36 UTC 
If you need to talk to the device node, it would be better to catch the:
  $udevmonitor --env
  ...
  UDEV  [1136812331.052205] add@/class/usb_device/usbdev3.5
  SUBSYSTEM=usb_device
  DEVNAME=/dev/bus/usb/003/005
  ...

event, cause then you can be sure the node it created at that time. The values are the numbers in the device name: usbdev<BUS>.<DEVICE>. Udev does get the numbers from there too.

If you need to match on the device with the DEVICE value, we may need to add USBBUS, USBDEVICE to the kernel.
Comment 4 Ludwig Nussel 2006-01-09 13:29:30 UTC 
Ok, thanks. I'll switch to this event type when I can test it with an actually supported mouse (don't have one here atm).
Comment 5 Kay Sievers 2006-01-09 13:35:57 UTC 
Great, let me know how it works, or just close the bug if it's fine. I set it to NEEDINFO for this. Thanks!
Comment 6 Ludwig Nussel 2006-01-10 16:31:12 UTC 
works