/dev/dvd link

Ag Hatzimanikas wrote:
> Sorry if this is a duplicate message,I hope not...if so
delete it.
> 
> The current instructions to create a dvd link to the
Mplayer page are
> incompatible with the current LFS/udev.
> 
> Also I wonder if it is wise to put everything that has
to do with device
> creation/udev-rules in a single page in Chapter 3 or 2.

Yes. I am seriously considering an "About
Devices" page in Chapter Three
to handle all the BLFS udev/device issues.

  -- Bruce

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Bruce Dubbs wrote:
> I am seriously considering an "About
Devices" page in Chapter Three
> to handle all the BLFS udev/device issues.

What would it cover?
Mplayer and Xine need a dvd symlink to be able to read DVDs
Alsa is pretty well covered by the current LFS rules and
just needs
people to be added to the audio group.
Cdparanoia, Audacious and Xine need a cdrom symlink to be
able to read CDs.
Should we open a bug to track these udev issues?

Andy
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Sorry to jump in here,

On Mon, May 15, 2006 at 11:25:19PM +0100, Andrew Benton
wrote:
> Bruce Dubbs wrote:
> >I am seriously considering an "About
Devices" page in Chapter Three
> >to handle all the BLFS udev/device issues.
> 
> What would it cover?
> Mplayer and Xine need a dvd symlink to be able to read
DVDs

  Mplayer doesn't need a dvd symlink. It will look for
/dev/dvd by
default, true, but you can specify about anything with
'-dvd-device
/dev/whatever'.


> Cdparanoia, Audacious and Xine need a cdrom symlink to
be able to read CDs.
> Should we open a bug to track these udev issues?

  Cdparanoia also take a command-line option to a device
node ('-d').


  Okay, this has nothing to do with udev. But still, at
least I always
use the mplayer thing, as I don't care so much about a
dvd-symlink, the
cdrom-symlink is fine for my taste.


  Cheers,
    Steffen
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Andrew Benton wrote:
> Bruce Dubbs wrote:
>> I am seriously considering an "About
Devices" page in Chapter Three
>> to handle all the BLFS udev/device issues.
> 
> What would it cover?
> Mplayer and Xine need a dvd symlink to be able to read
DVDs
> Alsa is pretty well covered by the current LFS rules
and just needs
> people to be added to the audio group.
> Cdparanoia, Audacious and Xine need a cdrom symlink to
be able to read CDs.
> Should we open a bug to track these udev issues?

I'm waiting for LFS to settle out to see what is needed.

  -- Bruce
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Steffen R. Knollmann wrote:
>   Mplayer doesn't need a dvd symlink. It will look for
/dev/dvd by
> default, true, but you can specify about anything with
'-dvd-device
> /dev/whatever'.

That's a good suggestion and may offer a solution to the
mplayer issue.
We could replace the bit about making the /dev/dvd symlink
with (for 
example)

echo "-dvd-device=/dev/hdc" >
~/.mplayer/config

But even that would need some discussion about udev. The
default LFS 
rules currently create /dev/hd* owned by the group disk. To
make it 
accessible by the video group requires altering the rule so
it only 
catches hda and hdb, then a separate rule can create hdc
with group video.

Andy
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Andrew Benton wrote:
> But even that would need some discussion about udev.
The default LFS 
> rules currently create /dev/hd* owned by the group
disk. To make it 
> accessible by the video group requires altering the
rule so it only 
> catches hda and hdb, then a separate rule can create
hdc with group video.

Wrong. The current (as of 2006-05-06) udev rules make all
CD-ROM devices owned 
by the "cdrom" group, and automatically create
/dev/dvd symlink. The plan is to 
replace the script that generates the rule for this symlink
with instructions on 
creating such rule manually.

To Bruce: there is nothing to wait for. Just assume that
/dev/cdrom exists and 
is owned by the "cdrom" group. Same for
/dev/dvd. The exact method of achieving 
this will change, but the result will not.

-- 
Alexander E. Patrakov
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Alexander E. Patrakov(patrakovums.usu.ru)Tue, May
16, 2006 at 09:06:22PM +0600:
> 
> Wrong. The current (as of 2006-05-06) udev rules make
all CD-ROM devices 
> owned by the "cdrom" group, and
automatically create /dev/dvd symlink. The 
> plan is to replace the script that generates the rule
for this symlink with 
> instructions on creating such rule manually.
> 
> To Bruce: there is nothing to wait for. Just assume
that /dev/cdrom exists 
> and is owned by the "cdrom" group. Same for
/dev/dvd. The exact method of 
> achieving this will change, but the result will not.
> 

Just a reminder.

As Alexander already mentioned the current udev rules create
a dvd symlink.
So the all paragraph "Installation for DVD Playback
(Optional)" is redundant and
should be deleted.
A simple note about adding the user to cdrom group is
sufficient.
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