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[20070106] Using your Xbox 360 HD DVD drive with NetBSD
Jared McNeill bounced me this gem: The Xbox 360 comes with an external HD DVD drive that's connected to the Xbox via USB. Using the drive on a NetBSD box via USB is easy, but accessing the data on the HD DVDs was not possible so far. After Reinoud Zandijk's last round of changes to the UDF filesystem driver to bring it upto UDF 2.60, the Xbox 360 HD DVDs' data can now be accessed from NetBSD:

# dmesg
...
uhub5 at uhub3 port 1
uhub5: NEC product 0x005a, class 9/0, rev 2.00/1.00, addr 2
uhub5: 4 ports with 2 removable, self powered
ugen0 at uhub5 port 3
ugen0: Microsoft Corporation Xbox 360 HD DVD Memory Unit, rev 2.00/1.08,
addr 3
umass0 at uhub5 port 4 configuration 1 interface 0
umass0: Microsoft Xbox 360 HD DVD Player, rev 2.00/1.00, addr 4
umass0: using ATAPI over Bulk-Only
atapibus1 at umass0: 2 targets
cd1 at atapibus1 drive 0:  cdrom removable
...
# mount -t udf /dev/cd1a /mnt
#
# ls -al /mnt
total 26
dr--r--r--   6 nobody  nobody   228 Jul 20 00:20 ./
drwxr-xr-x  21 root    wheel    512 Nov 29 01:36 ../
dr--r--r--   2 nobody  nobody   616 Jul 20 00:20 AACS/
dr--r--r--   2 nobody  nobody   556 Jul 20 00:20 AACS_BAK/
dr--r--r--   2 nobody  nobody   240 Jul 20 00:20 ADV_OBJ/
dr--r--r--   2 nobody  nobody  2124 Jul 20 00:20 HVDVD_TS/
#
# ls -al /mnt/AACS
total 6288
dr--r--r--  2 nobody  nobody      616 Jul 20 00:20 ./
dr--r--r--  6 nobody  nobody      228 Jul 20 00:20 ../
-r--r--r--  1 nobody  nobody      120 Jul 20 00:20 CONTENT_CERT.AACS
-r--r--r--  1 nobody  nobody   134496 Jul 20 00:20 CONTENT_HASH_TABLE1.AACS
-r--r--r--  1 nobody  nobody    61908 Jul 20 00:20 CONTENT_HASH_TABLE2.AACS
-r--r--r--  1 nobody  nobody  1000000 Jul 20 00:20 CONTENT_REVOCATION_LIST.AACS
-r--r--r--  1 nobody  nobody       64 Jul 20 00:20 DKF.AACS
-r--r--r--  1 nobody  nobody  1000000 Jul 20 00:20 MKBRECORDABLE.AACS
-r--r--r--  1 nobody  nobody  1000000 Jul 20 00:20 MKBROM.AACS
-r--r--r--  1 nobody  nobody      301 Jul 20 00:20 MNGCPY_MANIFEST.XML
-r--r--r--  1 nobody  nobody     2480 Jul 20 00:20 VTKF000.AACS
-r--r--r--  1 nobody  nobody      144 Jul 20 00:20 VTUF000.AACS
#
# ls -al /mnt/HVDVD_TS
total 32933404
dr--r--r--  2 nobody  nobody        2124 Jul 20 00:20 ./
dr--r--r--  6 nobody  nobody         228 Jul 20 00:20 ../
...
-r--r--r--  1 nobody  nobody   286636032 Jul 20 00:20 HDintro.EVO
-r--r--r--  1 nobody  nobody        2048 Jul 20 00:20 HDintro.MAP
...
-r--r--r--  1 nobody  nobody    63297536 Jul 20 00:20 TERM3NPCTLR1_HD.EVO
-r--r--r--  1 nobody  nobody        2048 Jul 20 00:20 TERM3NPCTLR1_HD.MAP
-r--r--r--  1 nobody  nobody    73046016 Jul 20 00:20 TERM3NSGTV1_HD.EVO
-r--r--r--  1 nobody  nobody        2048 Jul 20 00:20 TERM3NSGTV1_HD.MAP
-r--r--r--  1 nobody  nobody    17657856 Jul 20 00:20 WHVlogo240.EVO
...
-r--r--r--  1 nobody  nobody        2048 Jul 20 00:20 WHVlogo240.MAP
-r--r--r--  1 nobody  nobody     1124352 Jul 20 00:20 intro_black.EVO
-r--r--r--  1 nobody  nobody        2048 Jul 20 00:20 intro_black.MAP
# 
Please note that while the HD DVDs' can now be accessed, it is still encrypted, but it's a start. Jared tells me: ``Basically, the video files on the disc are encrypted and wrapped in an MPEG program stream. You need to extract the title key (also encrypted) from the disc to be able to decrypt the program streams. The video may be either MPEG2, VC-1, or H.264. I can't remember off the top of my head what formats are allowed for audio''.

The changes to UDF should theoretically work for BluRay DVDs also, but this hasn't been confirmed due to lack of hardware - maybe someone can send some feedback on this? Reinoud has the following to say about this: ``BluRay discs have most likely UDF 2.60 filesystem on them since this is the first standard that mentions this disc type. For BD-ROM and BD-RE this should be equal to version 2.50. On BD-R either VAT or logical overwrite is used but for read-only access this shouldn't differ. Testing it of course would be good.''

Reinoud also points out that the next points on his roadmap include optical disc formatting, creating newfs_udf(8), fsck_udf(8) and write support.

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Disclaimer: All opinion expressed here is purely my own. No responsibility is taken for anything.

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