Bug#447755: Support for CMS formatted disks in parted

[Stephen Powell <zlinuxman@wowway.com>]

Well, it took me a *long* time.  And I had to have help from
a real C programmer.  Someone who knew what they were doing
(i.e. someone proficient in C) could have easily done it in an
afternoon, I'm sure.  But I have managed to add support for
CMS formatted disks to parted.  This will go a long way, maybe
all the way, to adding support for CMS formatted disks to the
Debian installer.  It only works on CKD DASD, and then only
when using the ECKD driver (not the DIAG driver).  But switching
to the DIAG driver after installation for CMS formatted disks
on CKD DASD is no problem.  I don't have any FBA DASD to test
with; so I didn't bother even trying to add support for CMS
minidisks on FBA DASD.

After some more testing and code cleanup, I will open a bug
report against parted with severity wishlist for adding support
for CMS minidisks.  Patch files will be included.  As an added
bonus, it will include a bug fix for correctly calculating the
starting "sector" for an ldl formatted disk if the block size
is other than 4096.

-- 
  .''`.     Stephen Powell    
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