[mythtv-users] /dev/video0 permissions

[Nick Rout]

On Fri, Jan 23, 2009 at 10:24 AM, Ron Garrison <ron.garrison at gmail.com> wrote:
> After years of running mythtv on Fedora Core 3 and multiple kernel
> builds to accomodate new hardware, I have decided to do a clean
> install of Fedora Core 10.
>
> I was surprised to see that ivtv was included and it appears as though
> I don't have much to do there.  Now here's the problem
>
> I have 1 pvr-250 (single tuner) and 1-pvr-500 (dual tuner).  dmesg
> looks normal.  the pvr-250 is assigned to /dev/video0 and the pvr-500
> to /dev/video1 and /dev/video2.
>
> The problem is with permissions on /dev/video0.  They look as follows:
>
> crw-rw----    1 root   root    81,   0 2009-01-22 10:41 video0
> crw-rw----+  1 root   root    81,   1 2009-01-22 10:41 video1
> crw-rw----+  1 root   root    81,   2 2009-01-22 10:41 video2
>
> When executing getfacl to see what the extra permission settings are I
> get:  (note the user:mythtv:rw- is missing from video0)
>
> [mythtv at htpc ~]$ getfacl /dev/video0
> getfacl: Removing leading '/' from absolute path names
> # file: dev/video0
> # owner: root
> # group: root
> user::rw-
> group::rw-
> other::---
>
>
> [mythtv at htpc ~]$ getfacl /dev/video1
> getfacl: Removing leading '/' from absolute path names
> # file: dev/video1
> # owner: root
> # group: root
> user::rw-
> user:mythtv:rw-
> group::rw-
> mask::rw-
> other::---
>
>
> Executing  "setfacl -m user:mythtv:rw- /dev/video0"  fixes the problem
> temporarily, but upon reboot its back to the original state.
>
> Any suggestions on how to fix this so mythtv has access permissions
> upon boot?  Any idea as to why the video0 permissions are different
> from the video1 and video2 permissions?  TIA

run that command from a setup script? (not sure of that mechanism on
FC, but theres normally a place for miscellaneous boot scripts to go
and be executed on boot).