Where is a Camera Mount Point?

[poma]

On 25.10.2014 02:09, poma wrote:
> On 25.10.2014 01:31, Stephen Morris wrote:
>> On 10/25/2014 01:09 AM, poma wrote:
>>> On 24.10.2014 07:50, Stephen Morris wrote:
>>>> I have plugged a digital camera into my usb port and mounted it using
>>>> the popup displayed from the auto detect via konqueror (this annoys me
>>>> as well). When konqueror is launched it displays the contents via
>>>> Camera:/ which is okay, but subsequently I can't find any entries under
>>>> /run that represent the camera. I assumed there would be a mount point
>>>> under /run like there is for a usb flash disk. Given that there appears
>>>> to not be a mount point under /run, where is it mounted in Fedora 20, so
>>>> that I can point dolphin (which is what should be launched from the
>>>> 'Open with File Manager' prompt, not Konqueror) at the mount point
>>>> rather than having to manually type Camera:/ into the address bar.
>>> ptp != usb_storage
>>>
>>> http://en.wikipedia.org/wiki/Picture_Transfer_Protocol
>>> http://www.gphoto.org/proj/libgphoto2/
>>>
>>> modinfo -d usb_storage
>>> USB Mass Storage driver for Linux
>>> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/plain/drivers/usb/storage/Kconfig
>>>
>>>
>>> poma
>>>
>> Thankyou for the links. I looked at those links which gave me a lot more 
>> information that I didn't know about. Unfortunately the documentation on 
>> libphoto2 seems to potentially be self conflicting. The list of cameras 
>> that libphoto2 supports seems to have my Nikon D3100 listed, but the 
>> list of cameras and how they are supported under Unix does not appear to 
>> list my camera.
>> Following Cameron's email I checked the mount list which seems to 
>> indicate there is no mount point, which also coincides with the 
>> available device interface in the system tray not being able to unmount 
>> the camera before disconnection.
>> Also now that I have changed to application preference order in the 
>> properties of the folder displayed by dolphin, whenever I select 'Open 
>> with File Manager' at device detection time the process correctly 
>> launched dolphin to display the contents, whereas yesterday when 
>> konqueror was the default application, manually pointing dolphin at 
>> Camera:/ would not display the contents of the camera because dolphin 
>> was trying to treat the camera as a usb device and couldn't acquire the 
>> usb. The only issue with dolphin is it doesn't display the folder name 
>> where the images are stored on the camera as the same name that the 
>> camera says it is, dolphin seems to be putting its own prefix on the 
>> folder name.
>> Also dolphin seems to be starting at a higher point in the directory 
>> tree for its displays than where Windows starts.
>> DigiKam now seems be displaying the files on the camera now as well, 
>> whereas yesterday it couldn't either, although digiKam doesn't 
>> understand the raw format files that I am taking with the camera. I 
>> could use jpeg images but that is not as good for image manipulation and 
>> corrections as raw is. I can process these files using the raw interface 
>> to Photoshop Elements and Elements itself, albeit under windows, so not 
>> being able to access these under Linux is not that big a deal to me, 
>> other than the fact that I have to use Windows.
>>
>> regards,
>> Steve
>>
> 
> Does the Nikon D3100 supports USB mass storage mode?
> http://goo.gl/7bGFuh
> 


In this respect manual(D3100_EN.pdf) is questionable 
http://www.nikonusa.com/en/Nikon-Products/Product/dslr-cameras/D3100.html#tab-ProductDetail-ProductTabs-Support

Therefore you can try this *if* the device supports both - PictBridge(PTP) & USB storage, and they collide:

/etc/modprobe.d/usb_storage-quirks-Nikon_D3100.conf 
# Nikon D3100
#
# lsusb
# ID 04b0:0130 Nikon Corp. Coolpix 4600 (ptp)
# ID 04b0:0427 Nikon Corp.
# modinfo -p usb_storage
# ...
# quirks:supplemental list of device IDs and their quirks (string)
#
# 1.
options usb_storage quirks=04b0:0130:i
# 
# 2.
# options usb_storage quirks=04b0:0427:i
#
# 3.
# options usb_storage quirks=04b0:0130:i,04b0:0427:i
# 
# *uncomment* only *one* of the three *options* that you'll *use* as the first case!


Ref.
- https://www.kernel.org/doc/Documentation/kernel-parameters.txt
..
	usb-storage.quirks=
			[UMS] A list of quirks entries to supplement or
			override the built-in unusual_devs list.  List
			entries are separated by commas.  Each entry has
			the form VID:PID:Flags where VID and PID are Vendor
			and Product ID values (4-digit hex numbers) and
			Flags is a set of characters, each corresponding
			to a common usb-storage quirk flag as follows:
                                ...
				i = IGNORE_DEVICE (don't bind to this
					device);
                                ...
			Example: quirks=0419:aaf5:rl,0421:0433:rc

- https://www.kernel.org/doc/Documentation/usb/hotplug.txt

- USB: add Nikon D300 camera to unusual_devs
  https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/commit/drivers/usb/storage/unusual_devs.h?id=0047ca0


poma