non-root usb scanning

Peter L. Hurd phurd at ualberta.ca
Sat May 29 17:04:17 UTC 2004


Hey All,

I'm still trying to get my usb scanner to work for non-root users.

I've found the device file with the 0644 permissions that is causing the
problem at /proc/bus/usb/001/002.  I can chmod that file a+rw and mortal
user scanning works, but that needs to be re-chmodded each time I
reboot.  I suppose I could add a line to rc.local, but that would be
tacky, and I suppose may fail when other usb devices move around.

The solution sounds like either one of:

1) Make all usb devices have mode 0666.  I added the line 
none   /proc/bus/usb   usbfs   defaults,devmode=0666  0  0
to fstab.  But it doesn't work!  The scanner still comes up 0644.  Why?

2) muck around with hotplug.  I honestly don't intend on hotplugging my
scanner and the last time I mucked around with hotplug was to get my
Axim to hotplug/synce/multisync and the whole thing just left me with a
rash...  I want option 1, 

Any ideas why option 1 doesn't work.  Has anyone actually gotten option
2 to work (please don't say "I havn't but it ought to").

-P.

-- 
Peter L. Hurd                                  Department of Psychology
Assistant Professor                               University of Alberta
Ph 780.492-3578, Fax 780.492-1768                     Edmonton, Alberta
http://www.psych.ualberta.ca/~phurd                      T6G 2E9 Canada






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