From: Olaf Hering <olaf@aepfle.de>
To: util-linux@vger.kernel.org
Subject: udf LABEL= handling broken
Date: Mon, 6 Jun 2016 10:43:48 +0200 [thread overview]
Message-ID: <20160606084348.GA26722@aepfle.de> (raw)
(Assuming util-linux is used to create broken /dev/disk/by-label/*)
It seems Win7 handles only up to 11 chars as volume name for a disk
partition. According to this diff of xxd -a output it puts the length
after the actual string block. blkid ignores the lenght and uses
whatever is in the string block as LABEL=. For some reason the string is
stored twice in the metadata. The first attempt was volume name 'abcd',
the second uses the full 11 chars.
Olaf
--- /dev/shm/1 2016-06-06 10:15:16.298404371 +0200
+++ /dev/shm/4 2016-06-06 10:15:16.934405173 +0200
@@ -50,17 +50,17 @@
000204d0: 5300 0000 0000 0000 0000 0000 0405 0000 S...............
000204e0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
*
-00020600: 0600 0300 d800 0100 64b7 ae01 0301 0000 ........d.......
+00020600: 0600 0300 0500 0100 88c0 ae01 0301 0000 ................
00020610: 0200 0000 004f 5354 4120 436f 6d70 7265 .....OSTA Compre
00020620: 7373 6564 2055 6e69 636f 6465 0000 0000 ssed Unicode....
00020630: 0000 0000 0000 0000 0000 0000 0000 0000 ................
00020640: 0000 0000 0000 0000 0000 0000 0000 0000 ................
-00020650: 0000 0000 1000 6100 6200 6300 6400 3200 ......a.b.c.d.2.
+00020650: 0000 0000 1000 7300 7300 6400 3100 3200 ......s.s.d.1.2.
00020660: 3000 5f00 6400 6f00 6300 7300 6d00 6500 0._.d.o.c.s.m.e.
00020670: 6e00 7400 0000 0000 0000 0000 0000 0000 n.t.............
00020680: 0000 0000 0000 0000 0000 0000 0000 0000 ................
*
-000206d0: 0000 0009 0002 0000 002a 4f53 5441 2055 .........*OSTA U
+000206d0: 0000 0017 0002 0000 002a 4f53 5441 2055 .........*OSTA U
000206e0: 4446 2043 6f6d 706c 6961 6e74 0000 0000 DF Compliant....
000206f0: 0102 0000 0000 0000 0002 0000 0154 0000 .............T..
00020700: 0000 0000 0000 0000 0600 0000 0100 0000 ................
@@ -667343,18 +667343,18 @@
00aa24d0: ffff ffff ffff 0000 0000 0000 0000 0000 ................
00aa24e0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
*
-00aa2600: 0001 0300 6000 0100 f421 f001 0154 0000 ....`....!...T..
+00aa2600: 0001 0300 3e00 0100 6291 f001 0154 0000 ....>...b....T..
00aa2610: 7810 e007 0512 0a0e 2528 1d45 0200 0300 x.......%(.E....
00aa2620: 0100 0000 0100 0000 0000 0000 0000 0000 ................
00aa2630: 004f 5354 4120 436f 6d70 7265 7373 6564 .OSTA Compressed
00aa2640: 2055 6e69 636f 6465 0000 0000 0000 0000 Unicode........
00aa2650: 0000 0000 0000 0000 0000 0000 0000 0000 ................
00aa2660: 0000 0000 0000 0000 0000 0000 0000 0000 ................
-00aa2670: 1000 6100 6200 6300 6400 3200 3000 5f00 ..a.b.c.d.2.0._.
+00aa2670: 1000 7300 7300 6400 3100 3200 3000 5f00 ..s.s.d.1.2.0._.
00aa2680: 6400 6f00 6300 7300 6d00 6500 6e00 7400 d.o.c.s.m.e.n.t.
00aa2690: 0000 0000 0000 0000 0000 0000 0000 0000 ................
*
-00aa26e0: 0000 0000 0000 0000 0000 0000 0000 0009 ................
+00aa26e0: 0000 0000 0000 0000 0000 0000 0000 0017 ................
00aa26f0: 004f 5354 4120 436f 6d70 7265 7373 6564 .OSTA Compressed
00aa2700: 2055 6e69 636f 6465 0000 0000 0000 0000 Unicode........
00aa2710: 0000 0000 0000 0000 0000 0000 0000 0000 ................
next reply other threads:[~2016-06-06 8:43 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-06 8:43 Olaf Hering [this message]
2016-06-24 8:32 ` udf LABEL= handling broken Karel Zak
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