Red Hat Bugzilla – Bug 249239
Can not use ptp camera as a non-root user
Last modified: 2007-11-30 17:12:11 EST
Since I upgraded to fedora 7 from fedora 6 I can no longer import pictures from my camera (Canon IXUS 55 talking PTP) as a non-root user. When I run env LANG=C gphoto2 --debug --debug --port "usb:" -L it report 0.983953 gphoto2-port-usb(1): Looking for USB device (vendor 0x4a9, product 0x30ff)... found. 0.984131 gphoto2-port-usb(1): Detected defaults: config 1, interface 0, altsetting 0, inep 81, outep 02, intep 83, class 06, subclass 01 0.984309 gphoto2-abilities-list.c(2): Found 'Canon Digital IXUS 55 (PTP mode)' (0x4a9,0x30ff) 0.984501 gphoto2-port(2): Freeing port... 0.984676 gphoto2-port(2): Closing port... 0.984889 gphoto2-camera(2): Setting abilities ('Canon Digital IXUS 55 (PTP mode)')... 0.989662 gphoto2-setting(2): Setting key 'model' to value 'Canon Digital IXUS 55 (PTP mode)' (gphoto2) 0.989690 gphoto2-setting(2): Saving 2 setting(s) to file "/home/dennis/.gphoto/settings" 0.989913 gphoto2-port-info-list(2): Looking for path 'usb:' (6 entries available)... 0.989938 gphoto2-port-info-list(2): Getting info of entry 1 (6 available)... 0.989968 gphoto2-camera(2): Setting port info for port 'Universal Serial Bus' at 'usb:'... 0.990892 gphoto2-port(2): Setting timeout to 5000 millisecond(s)... 0.990916 gphoto2-port(2): Setting settings... 0.990932 gphoto2-setting(2): Setting key 'port' to value 'usb:' (gphoto2) 0.990951 gphoto2-setting(2): Saving 2 setting(s) to file "/home/dennis/.gphoto/settings" 0.991183 foreach(2): Executing action 'List Files' for folder '/'. 0.993669 gphoto2-camera(2): Listing files in '/'... 0.993721 gphoto2-camera(2): Initializing camera... 0.993759 gphoto2-port-usb(1): Looking for USB device (vendor 0x4a9, product 0x30ff)... found. 0.993793 gphoto2-port-usb(1): Detected defaults: config 1, interface 0, altsetting 0, inep 81, outep 02, intep 83, class 06, subclass 01 0.993818 gphoto2-camera(2): Loading '/usr/lib/libgphoto2/2.3.1/ptp2'... 0.994148 gphoto2-port(2): Opening USB port... 0.994245 gphoto2-port(0): Could not query kernel driver of device. 0.994279 gphoto2-port(0): Could not claim interface 0 (Operation not permitted). Make sure no other program or kernel module (such as sdc2xx, stv680, spca50x) is using the device and you have read/write access to the device. 0.994341 context(0): An error occurred in the io-library ('Could not claim the USB device'): Could not claim interface 0 (Operation not permitted). Make sure no other program or kernel module (such as sdc2xx, stv680, spca50x) is using the device and you have read/write access to the device. ------------------------- As root it all work and it used to work in fedora 6 and previous versions of fedora that I've had installed. I don't know if it is a udev or a gphoto2 problem. But since it work when executed as root I assume there is some udev rule missing or similar.
when I changed the owner of the files in /proc/bus/usb/002/00/* from root to the local logged in user it worked. I guess it was supposed to be changed by one of hal/pam/hotplug/udev when the camera is plugged in?
*** This bug has been marked as a duplicate of 239250 ***
try the devices in /dev/bus/usb/2/0/* ... /proc/bus/usb is deprecated..