kern/60163

[Søren Schmidt]

Chiharu Shibata wrote:
> At Sun, 12 Feb 2006 17:02:37 JST, you wrote...
> 
>>> To mount this DISC, your opinion is...
>>> (1) at first, try "cdcontrol -f /dev/acd0c info" to make sure where
>>>     track is data area.
>>> (2) type "mount_cd9660 -o rdonly /dev/acd0t13 /cdrom".
>>> Is this right?
>> Yeah that used to work at least, if not it needs fixing of course..
> 
> Hmm, succeeded under your environment...
> 
>> Any chance you could put up a mirror of that disk image so I could burn 
>> me one exactly like it to test with please ? the one I had here of the 
>> sort seems to have gone amiss, making testing a pain..
> 
> My sample DISC is a commercial product. The copy is forbidden, of course.
> However, about this problem, We may consider that it is not peculiar to
> this product.
> When I wrote that patch at first, some testers used another DISC, and
> some result as me with/without patch.

Well, without proper samples it'll be hard to work on this, if this is 
as common as suggested finding free samples that I can use for testing 
should not be a problem ?
> 
> A various situation, my environment does not change/update-to-current.
> So I will collect testers again and have it investigated whether it can
> mount via /dev/acdNtY or not.
> If it can, I will withdraw about "1st Problem".
> 
> But "2nd/3rd Problem" remains as before, I want to ask your opinion
> about these.
> Moreover, the point that beforehand investigation of which track is
> data area, this is very unreasonable restriction, I think.

Hmm, could it be that the data track is always the last track ?

You cannot compare SCSI/ATAPI behavior here, since the SCSI layer cannot 
handle ! %512 byte sectors it doesn't have to handle audio tracks.
Native ATA/ATAPI on the other hand supports *any* sector size and needs 
to set the right sector size for each track. Now if you need a specific 
track you need to access that one via the acdNtY interface to gt the 
sector size right, if that fails I'll fix it :)

Oh, and yes I'm talking 6.x and -current here, anything before that I 
don't support due to lack of spare time....

-Søren