The reason is because /dev/bus/usb/[name] is created with following
permissions:
$ mc
c[2]$ ls -la
total 0
drwxr-xr-x 2 root root 80 Nov 29 22:24 .
drwxr-xr-x 5 root root 100 Nov 29 21:36 ..
crw-rw-r-- 1 root root 189, 128 Nov 29 21:35 1
crw-rw-r-- 1 root root 189, 135 Nov 29 22:24 8
root:root 664
After changing manually to root:camera 664 it started to wrok! However I don't
know which script is responsible for that :(
I have added following line to /etc/hotplug/usb/libgphoto2. However output is
strange:
$ cat libgphoto2.txt
libgphoto2: ACTION: add DEVICE:
libgphoto2: ACTION: add DEVICE: /proc/bus/usb/002/011
libgphoto2: ACTION: add DEVICE:
I mean I cannot see here setting /dev/bus/usb properties ...
Nov 29 22:24:02 dom udevd-event[5984]: run_program: '/bin/sh -c 'K=usbdev2.8;
K=${K#usbdev}; B=${K%%.*}; D=${K#*.}; echo bus
/usb/$B/$D''
Nov 29 22:24:02 dom udevd-event[5984]: run_program: '/bin/sh' (stdout)
'bus/usb/2/8'
Nov 29 22:24:02 dom udevd-event[5984]: run_program: '/bin/sh' returned with
status 0
Nov 29 22:24:02 dom udevd-event[5984]: udev_rules_get_name: rule applied,
'usbdev2.8' becomes 'bus/usb/2/8'
Nov 29 22:24:02 dom udevd-event[5984]: create_node: creating device node
'/dev/bus/usb/2/8'
Nov 29 22:24:02 dom udevd-event[5984]: run_program:
'/etc/hotplug/usb/libgphoto2' 'usb_device'
Nov 29 22:24:02 dom udevd-event[5984]: run_program:
'/etc/hotplug/usb/libgphoto2' returned with status 0
Nov 29 22:24:02 dom udevd-event[5984]: run_program: '/usr/lib/hal/hal.hotplug'
'usb_device'
Nov 29 22:24:02 dom udevd-event[5984]: run_program: '/usr/lib/hal/hal.hotplug'
returned with status 0
Nov 29 22:24:02 dom udevd-event[5984]: run_program: '/usr/lib/hal/hal.dev'
'usb_device'
Nov 29 22:24:02 dom udevd-event[5984]: run_program: '/usr/lib/hal/hal.dev'
returned with status 0
Nov 29 22:24:02 dom udevd-event[5984]: pass_env_to_socket: passed -1 bytes to
socket '/org/kernel/udev/monitor',
Nov 29 22:24:02 dom udevd-event[5984]: run_program:
'/lib/udev/udev_run_hotplugd' 'usb_device'
Nov 29 22:24:02 dom udevd-event[5984]: run_program:
'/lib/udev/udev_run_hotplugd' returned with status 0
Nov 29 22:24:02 dom udevd-event[5984]: run_program: '/lib/udev/udev_run_devd'
'usb_device'
Nov 29 22:24:02 dom udevd-event[5984]: run_program: '/lib/udev/udev_run_devd'
returned with status 0
Nov 29 22:24:02 dom udevd-event[5984]: udev_event_run: seq 1089 finished
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