:: Re: [DNG] vdev - scanner
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Autore: shraptor
Data:  
To: dng
Oggetto: Re: [DNG] vdev - scanner
On 2016-08-16 18:19, shraptor wrote:
> On 2016-08-16 18:11, shraptor wrote:
>>> I got the scanner working.
>>>
>>> If I boot with udev, the scanner works, and the permissions on the
>>> device
>>> look like this:
>>>
>>> ls -l /dev/bus/usb/002/
>>> crw-rw-r--+ 1 root root 189, 137 Aug 16 10:30 010
>>>
>>> and with vdev, it looks like this:
>>> crw------- 1 root root 189, 131 Aug 16 10:39 004
>>>
>>> I changed the permissions and added myself to the scanner group
>>> (oops!)
>>> and now xsane finds the scanner when I'm running vdev. I hope someone
>>> knows what to do with this information, because I'm in new territory
>>> here.
>>> (and I don't know C.)
>>>
>>> If udevadm output for the scanner would help, I'll post it. The udev
>>> rules
>>> for scanners are in /lib/udev/rules.d/60-libsane.rules
>>
>>
>> Maybe you should write a vdev action for your scanner
>> on my system they actions are in /etc/vdev/actions
>>
>> for instance optical.act contains
>>
>> [vdev-action]
>> event=any
>> path=^sr[0-9]*$
>> VAR_OPTICAL_OWNER=root
>> VAR_OPTICAL_GROUP=optical
>> VAR_OPTICAL_MODE=0660
>> helper=optical.sh
>> daemonlet=true
>> if_exists=run
>>
>>
>>
>> No C is needed. Write something that matches path like for optical
>> path=^sr[0-9]*$
>> then set needed permissions and group and vdev will fix it for you
>>
>>
>> When you succeed you may contribute that .act file for others, yeah?
>
>
> Maybe you can use something like null.act
>
> [vdev-action]
> event=add
> path=^null$
> VAR_PERMISSIONS_MODE=0666
> helper=permissions.sh
> if_exists=run
>
>
>
> I mean the permissions.sh
>
>
> so something like
>
> scanner.act
>
> [vdev-action]
> event=add
> path=^null$


> VAR_PERMISSIONS_MODE=0664
> helper=permissions.sh
> if_exists=run
>
> Dunnow wot path you should use but maybe you could figure it out?



perhaps?

scanner.act

[vdev-action]
event=add
path=^bus/usb/1$
VAR_OWNER=root
VAR_GROUP=scanner
VAR_PERMISSIONS_MODE=0664
helper=permissions.sh
if_exists=run


Does debian use something like /dev/usbscanner0 or /dev/usb/scanner0?
Then maybe a new helper scanner.sh is needed, like optical.sh?

In the beginning of vdev creation we dreamt of a udev rules to vdev
action parser



>
>>
>>
>>
>>>
>>> -fsr
>>>
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