[mythtv-users] UDEV rules

Hika van den Hoven hikavdh at gmail.com
Sat Jan 25 23:18:37 UTC 2014 

Hoi Daryl,

The last two you only replied to me. I forwarded them to the list.

Weird that they now point to the frontends. It confirms that more
simlinks are made, which overwrite each other and only the last one
sticks. The counter that is used to avoid this in the gentoo udev
script is obviously not valid here. The named 'IMPORT{program}="v4l_id
$devnode"' is actualy a binary, that i can't send.
Maybe the part 'KERNEL=="video*|vbi*', changed to 'KERNEL=="frontend*'
would exclude the other devices?.
Or maybe trying:
SUBSYSTEM=="dvb",ATTRS{vendor}=="0x14f1",ATTRS{device}=="0x8852",SYMLINK+="dvb/dig1250-$KERNEL",GROUP="video"
SUBSYSTEM=="dvb",ATTRS{vendor}=="0x1131",ATTRS{device}=="0x7133",SYMLINK+="dvb/DigKW150-$KERNEL",GROUP="video"

Also I notice that in the gentooscript '$attr{}' is used and in yours
'ATTRS{}' ?

Tot mails,
  Hika                            mailto:hikavdh at gmail.com

"Zonder hoop kun je niet leven
Zonder leven is er geen hoop
Het eeuwige dilemma
Zeker als je hoop moet vernietigen om te kunnen overleven!"

De lerende Mens
--

Saturday, January 25, 2014, 11:51:17 PM, you wrote:

> On Sat, Jan 25, 2014 at 5:17 PM, Daryl McDonald <darylangela at gmail.com> wrote:
>> On Sat, Jan 25, 2014 at 4:55 PM, Hika van den Hoven <hikavdh at gmail.com> wrote:
>>> Hoi Daryl,
>>>
>>> As a help, this is the build-in v4l rule on my Gentoo system:
>>>    /lib64/udev/rules.d/60-persistent-v4l.rules
>>>
>>> # do not edit this file, it will be overwritten on update
>>>
>>> ACTION=="remove", GOTO="persistent_v4l_end"
>>> SUBSYSTEM!="video4linux", GOTO="persistent_v4l_end"
>>> ENV{MAJOR}=="", GOTO="persistent_v4l_end"
>>>
>>> IMPORT{program}="v4l_id $devnode"
>>>
>>> SUBSYSTEMS=="usb", IMPORT{builtin}="usb_id"
>>> KERNEL=="video*", ENV{ID_SERIAL}=="?*", SYMLINK+="v4l/by-id/$env{ID_BUS}-$env{ID_SERIAL}-video-index$attr{index}"
>>>
>>> # check for valid "index" number
>>> TEST!="index", GOTO="persistent_v4l_end"
>>> ATTR{index}!="?*", GOTO="persistent_v4l_end"
>>>
>>> IMPORT{builtin}="path_id"
>>> ENV{ID_PATH}=="?*", KERNEL=="video*|vbi*", SYMLINK+="v4l/by-path/$env{ID_PATH}-video-index$attr{index}"
>>> ENV{ID_PATH}=="?*", KERNEL=="audio*", SYMLINK+="v4l/by-path/$env{ID_PATH}-audio-index$attr{index}"
>>>
>>> LABEL="persistent_v4l_end"
>>>
>>>
>>> Tot mails,
>>>   Hika                            mailto:hikavdh at gmail.com
>>>
>>> "Zonder hoop kun je niet leven
>>> Zonder leven is er geen hoop
>>> Het eeuwige dilemma
>>> Zeker als je hoop moet vernietigen om te kunnen overleven!"
>>>
>>> De lerende Mens
>>> --
>>>
>>> Saturday, January 25, 2014, 10:21:21 PM, you wrote:
>>>
>>>> On Sat, Jan 25, 2014 at 4:11 PM, Bill Meek <keemllib at gmail.com> wrote:
>>>>> On 01/25/2014 02:34 PM, Andrew C. (AFPup) Stadt wrote:
>>>>>
>>>>> ...
>>>>>
>>>>>> Ok, so you've got the udev rules making the appropriate symlinks, you've
>>>>>> verified that the 'mythtv' user is indeed a member of the video group,
>>>>>> and the device nodes have the appropriate permissions (eg, read/writable
>>>>>> by the video group).
>>>>>>
>>>>>> I guess that leaves a couple things: what exactly are you entering for the
>>>>>> path to the device in mythtv-setup, and who are you running
>>>>>> mythtv-setup as?  Are you logged in as the 'mythtv' user, or are you
>>>>>> logged in as someone else?
>>>>>
>>>>>
>>>>> I had a few minutes to test this and no, the rules are creating symlinks
>>>>> to /dev/dvb/adapter0/net0 which is wrong. The link *must* be to frontend0
>>>>> (or at least they were pointing to net0 last time Daryl posted them.)
>>>>>
>>>>> Creating the symlinks manually, this will fail:
>>>>>
>>>>>     sudo ln -s /dev/dvb/adapter0/net0 /dev/someName
>>>>>
>>>>> and this will work:
>>>>>
>>>>>     sudo ln -s /dev/dvb/adapter0/frontend0 /dev/someOtherName
>>>>>
>>>>> So the issue here is how to create a proper udev rule
>>>>> that selects frontend0, not net0. I haven't had time
>>>>> to find the proper key/value pair to correct this.
>>>>>
>>>>> And, Daryl, I had to type the link names in manually, they
>>>>> weren't available using the left and right arrows.
>>>>>
>>>>> No need to delete the capture cards for this to work, just
>>>>> edit the existing card.
>>>>>
>>>>> --
>>>>> Bill
>>>>>
>>>>> _______________________________________________
>>>>> mythtv-users mailing list
>>>>> mythtv-users at mythtv.org
>>>>> http://www.mythtv.org/mailman/listinfo/mythtv-users
>>>
>>>> OK so currently the two digital cards look like:
>>>> lrwxrwxrwx  1 root root   15 Jan 25 13:43 dig1250 -> adapter0/demux0
>>>> lrwxrwxrwx  1 root root   13 Jan 25 13:43 DigKW150 -> adapter1/net0
>>>
>>>> and the corresponding rules are:
>>>> SUBSYSTEM=="dvb",ATTRS{vendor}=="0x14f1",ATTRS{device}=="0x8852",SYMLINK+="dvb/dig1250",GROUP="video"
>>>
>>>> SUBSYSTEM=="dvb",ATTRS{vendor}=="0x1131",ATTRS{device}=="0x7133",SYMLINK+="dvb/DigKW150",GROUP="video"
>>>
>>>> I'm going back to the udev wiki and see if I can beat anything into
>>>> this thick Irish cranium of mine.
>>>> _______________________________________________
>>>> mythtv-users mailing list
>>>> mythtv-users at mythtv.org
>>>> http://www.mythtv.org/mailman/listinfo/mythtv-users
>>
>> Implementing Yianni's revise rules looks like this after a re-boot:
>> daryl at daryl-A780L3C:~$ ls -lah /dev/dvb*
>> total 0
>> drwxr-xr-x  4 root root  120 Jan 25 17:09 .
>> drwxr-xr-x 16 root root 4.6K Jan 25 17:09 ..
>> drwxr-xr-x  2 root root  120 Jan 25 17:09 adapter0
>> drwxr-xr-x  2 root root  120 Jan 25 17:09 adapter1
>> lrwxrwxrwx  1 root root   13 Jan 25 17:09 HP1250 -> adapter0/net0
>> lrwxrwxrwx  1 root root   15 Jan 25 17:09 KW150 -> adapter1/demux0
>> daryl at daryl-A780L3C:~$
>> (my own modifications on symlink names)  I'm going to see if the HP
>> 1250 symlink sticks.

> It didn't so I put in Haki's suggestion and tada check this out:
> daryl at daryl-A780L3C:~$ ls -lah /dev/dvb*
> total 0
> drwxr-xr-x  4 root root  120 Jan 25 17:32 .
> drwxr-xr-x 16 root root 4.6K Jan 25 17:32 ..
> drwxr-xr-x  2 root root  120 Jan 25 17:31 adapter0
> drwxr-xr-x  2 root root  120 Jan 25 17:32 adapter1
> lrwxrwxrwx  1 root root   18 Jan 25 17:31 digHP1250-Index -> adapter0/frontend0
> lrwxrwxrwx  1 root root   18 Jan 25 17:32 digKW150-Index -> adapter1/frontend0
> daryl at daryl-A780L3C:~$

> As yet i can't get the symlink to stick. Much obliged for all the input. Daryl

>>>

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