libgphoto2 calls hotplug script with wrong variables

[Moshe Yudkowsky <msha5_17@bl.com>]

I can fix this myself, but I'm curious to know if anyone else has fixed 
it, if it needs a bug report, or if something is very wrong with the way 
my system works.

My udev directory has a file called "libgphoto2.rules" -- I didn't put 
it there, but I don't know which package did (from the changelog, I 
suspect it was libgphoto2 package using a utility called 
"print-udev-rules").

In any case, when I plug in a USB camera, the file will use manufacturer 
and product code to find RUN+="/etc/hotplug/usb/libgphoto2".

Here's some problems:

(1a) I keep on reading on this list that /etc/hotplug is supposed to be 
deprecated, and yet here's /etc/hotplug that looks pretty official.

(1b) I also keep reading about HAL, but it isn't installed on my machine 
accoring to dpkg. Should it be? If it is supposed to be, why isn't in 
installed -- which script should have installed it?

(2) The script libgphoto2 doesn't work. The goal of libgphoto2 is to set 
the device created by hotplug (later udev) so that anyone in group 
$CAMERA can use it, but that doesn't happen, and here's why.

The script uses the environment variable $DEVICE. Now, that's 
interesting, because the udev man page doesn't mention this variable in 
the ENVIRONMENT section of the page at all, and it makes me wonder just 
what variables are available to anything I run as a RUN+= script. Not 
documented?

Problem:

The $DEVICE isn't equivalent to $DEVPATH. For example,

DEVICE is "/proc/bus/usb/002/010"
while
DEVPATH is "/devices/pci0000:00/0000:00:10.1/usb2/2-1/2-1:1.0".

Neither of these is any good when I want to configure the port that's 
been created; what I need is the USB bus device path so I can set group 
permissions. E.g., what I need is

/dev/bus/usb/002/010


No dobut I will find the correct magic combination, but if anyone has 
already solved this problem, please let me know.






-- 
  Moshe Yudkowsky
  work: http://www.Disaggregate.com
  book: http://www.PebbleAndAvalanche.com


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