[parted-devel] Atari label false positives

[John Paul Adrian Glaubitz]

On 05/11/2018 05:56 PM, Phillip Susi wrote:
> On 5/11/2018 11:29 AM, John Paul Adrian Glaubitz wrote:
>> Thanks for digging this up. I wasn't aware of this particular issue before
>> and I agree, this needs to be addressed. I hope that I didn't cause too
>> many DOS partitions to be misdetected. Sorry for the inconvenience if I
>> did. The Atari partition table code has been working great for
>> Debian/m68k so
>> far though.
> 
> I have seen at least one or two reports of Ubuntu users getting false
> positives, and then I saw the bug report on the upstream parted bug
> tracker the other day where someone claimed to have found a logical
> error that caused atari_probe to return true when it shouldn't.  I
> finally realized it was not an error ( at least I think not ).

According to the documentation, p.43 [1], I think offset $01 should always
contain either "GEM", "BGM" or "XGM". They don't seem to be optional.

I guess adding those to atari_probe() should help improve the detection
quite a bit. But I would have to test that first.

> I think I will at least move atari to be probed after all other labels
> have failed.

This sounds like a reasonable thing to do until I have worked out
a patch to improve atari_probe().

Adrian

> [1] https://people.debian.org/~glaubitz/Atari_HD_File_Sytem_Reference_Guide.pdf

-- 
  .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer - glaubitz at debian.org
`. `'   Freie Universitaet Berlin - glaubitz at physik.fu-berlin.de
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