Problem getting udev to see Kodak camera?

Problem getting udev to see Kodak camera?

[Christian Convey]

Hey guys,

I've got a Kodak EasyShare DX6490, hooked up to my Toshiba P25-S507 
laptop. I'm running Debian Sarge with their 2.6.8-1 kernel and I've 
installed Sarge's udev package (version 046).

I can't get my udev rules to show my camera in the /dev filesystem, and 
I'm concerned about the results of a test I ran. Anyone mind commenting? ...

After hitting the camera's base-station's "sync" button, I ran 'dmesg' 
and got this output:

    usb 3-1.2: new full speed USB device using address 5
    usb 3-1.2: USB disconnect, address 5

So then I ran this command with the following results:

    pascal:/sys/bus/usb/devices# udevinfo -p 
/sys/devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1.2/3-1.2:1.0 -a

udevinfo starts with the device the node belongs to and then walks up the
device chain, to print for every device found, all possibly useful 
attributes
in the udev key format.
Only attributes within one device section may be used together in one rule,
to match the device for which the node will be created.

   looking at class device 
'/sys/devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1.2/3-1.2:1.0':
     SYSFS{bAlternateSetting}=" 0"
     SYSFS{bInterfaceClass}="06"
     SYSFS{bInterfaceNumber}="00"
     SYSFS{bInterfaceProtocol}="01"
     SYSFS{bInterfaceSubClass}="01"
     SYSFS{bNumEndpoints}="03"
     SYSFS{detach_state}="0"
     SYSFS{iInterface}="00"



What concerns me is that I don't see any "BUS" or "ID" line, like I see 
in various examples such as shown here:
   http://webpages.charter.net/decibelshelp/LinuxHelp_UDEVPrimerMisc.html

Could the omission of those two lines from 'udevinfo's output indicate a 
problem?


Also, is there some good way I can trace through what udev does when I 
hit the camera's sync button?  It's apparent that my rule isn't getting 
triggered:
    SYSFS{manufacturer}="Eastman Kodak Company",\
    SYSFS{serial}="KCTCT42820593", NAME="%k", SYMLINK="/dev/my-camera"
and I'd like to figure out where the process is falling down.

Thanks,
Christian


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Re: Problem getting udev to see Kodak camera?

[Kay Sievers]

On Tue, 2004-11-23 at 00:26 -0500, Christian Convey wrote:

Is this camera a generic storage device? If not, you will not get a
device node for. Try libgphoto2:
  http://www.gphoto.org/proj/libgphoto2/support.php

> I've got a Kodak EasyShare DX6490, hooked up to my Toshiba P25-S507 
> laptop. I'm running Debian Sarge with their 2.6.8-1 kernel and I've 
> installed Sarge's udev package (version 046).
> 
> I can't get my udev rules to show my camera in the /dev filesystem, and 
> I'm concerned about the results of a test I ran. Anyone mind commenting? ...

>     pascal:/sys/bus/usb/devices# udevinfo -p 
> /sys/devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1.2/3-1.2:1.0 -a

udev does not care about /sys/devices/* devices. There will never be a
device node! The "dev" files are only for class and block devices.

Good luck,
Kay



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Re: Problem getting udev to see Kodak camera?

[Christian Convey]

Hey Kay,
Thanks for the help.

The list of cameras given on:
    http://www.gphoto.org/proj/libgphoto2/support.php
does list my camera, so at least on one level I'm in good shape.

I'm not positive, but I think back in my Fedora Core 2/3 days this 
camera was accessible to gphoto as a regular camera, and was accessible 
as a USB mass storage device (i.e., /dev/sda1).


My understanding is that software gets called in the following sequence 
(ideally). Is it correct?

1. usb driver tells kernel that a usb device was plugged in.
2. kernel invokes /sbin/hotplug, which in turn invokes:
3. /etc/hotplug.d/default/10-udev.hotplug (link to /sbin/udevsend)
4. udev invokes the rules in /etc/udev/rules.d/* in lexical order until
    one catches the event.
5. I've created a file named /etc/udev/rules.d/10-local.rules
    It just just this one line:
    SYSFS{manufacturer}="Eastman Kodak Company", \
    SYSFS{serial}="KCTCT42820593", NAME="%k", SYMLINK="/dev/my-camera"

If I understand this properly, then is my best bet just to put "echo" 
commands into the various scripts shown above, looking for where things 
fall apart?

Also, is the presence of my rule going to somehow prevent a USB 
harddrive partition (i.e., /dev/sda1) from getting created?

Thanks,
Christian


Kay Sievers wrote:
> On Tue, 2004-11-23 at 00:26 -0500, Christian Convey wrote:
> 
> Is this camera a generic storage device? If not, you will not get a
> device node for. Try libgphoto2:
>   http://www.gphoto.org/proj/libgphoto2/support.php
> 
> 
>>I've got a Kodak EasyShare DX6490, hooked up to my Toshiba P25-S507 
>>laptop. I'm running Debian Sarge with their 2.6.8-1 kernel and I've 
>>installed Sarge's udev package (version 046).
>>
>>I can't get my udev rules to show my camera in the /dev filesystem, and 
>>I'm concerned about the results of a test I ran. Anyone mind commenting? ...
> 
> 
>>    pascal:/sys/bus/usb/devices# udevinfo -p 
>>/sys/devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1.2/3-1.2:1.0 -a
> 
> 
> udev does not care about /sys/devices/* devices. There will never be a
> device node! The "dev" files are only for class and block devices.
> 
> Good luck,
> Kay
> 
> 
> 
> -------------------------------------------------------
> SF email is sponsored by - The IT Product Guide
> Read honest & candid reviews on hundreds of IT Products from real users.
> Discover which products truly live up to the hype. Start reading now. 
> http://productguide.itmanagersjournal.com/
> _______________________________________________
> Linux-hotplug-devel mailing list  http://linux-hotplug.sourceforge.net
> Linux-hotplug-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/linux-hotplug-devel
> 


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