[vlc] Re: RPC2 drives and MacOS X

[Serge Cohen]

Hi again;

So I've spent (a little) time on the issue, just ofund out the fs_usage 
utility that is able to trace r/w calls to filesystem, and run in the 
three DVDCSS_METHODs (disc, title, key).

I did not have time to analyse the output, if anyone is more familiar 
with this tool, help is welcomed.
Here is the gnutar/gz of the folder containing both logs from fs_usage 
and logs of libdvdcss.

Again, any input is welcome.

Serge.

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Le jeudi 31 octobre 2002, ? 12:07 , Samuel Hocevar a ?crit :

> On Thu, Oct 31, 2002, Serge Cohen wrote:
>
>> The problem is the same what so ever I'm using as method (disc, title
>> and ... -don't remember the name now-).
>
>    That would be "key". I'd be interested in a verbose output with the
> title method, maybe after a cold reboot and absolutely minimal disc
> manipulation (I heard there was a way to disable the automatic launch
> of Apple's player in X.2).
>
>> About the strace and truss utility, what are they performing?
>
>    They trace system calls and kernel answers. Under Linux for instance,
> running "strace dd if=/dev/cdrom skip=10000000" (an attempt to read far
> beyond the end of the device) outputs, amongst a lot of other lines:
>
> open("/dev/cdrom", O_RDONLY|O_LARGEFILE) = 0
> _llseek(0, 5120000000, [5120000000], SEEK_CUR) = 0
> read(0, 0x8051000, 512)                 = -1 EIO (Input/output error)
>
>    It might give hints on what the kernel says, and after which dvdcss
> operation it starts really complaining.
>
> Regards,
> --
> Sam.
> --
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>
----------------------------------------------------
Serge Cohen

GPG Key ID: 1024D/69B1D346
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