On 08/16/2016 12:49 PM, shraptor wrote:
> 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
>
>

I now have a better idea of what such dreams would entail. Getting close...


This mostly works. I can get the right permissions on the device, but when
I add the setfacl command, vdev fails. Error is "Invalid action" and it
lists /usr/etc/vdev/actions/scanner.act. If I run the command in the
console, it works correctly. I tried it with the command before and after
"if_exists=run".


[vdev-action]
event=add
path=^bus/usb/*/[001-999]
OS_SUBSYSTEM=usb
OS_TYPE=255/255/255
VAR_OWNER=root
VAR_GROUP=scanner
VAR_PERMISSIONS_MODE=0664
helper=permissions.sh
if_exists=run
command:/usr/bin/setfacl -m g:scanner:rw $VDEV_MOUNTPOINT/$VDEV_PATH

Any ideas on how to get setfacl to work are welcome. Thanks.

-fsr