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authorSteven J. Magnani <steve.magnani@digidescorp.com>2019-07-11 16:38:52 +0300
committerJan Kara <jack@suse.cz>2019-07-31 13:04:42 +0300
commit6fbacb8539a6659d446a9efabb538cfc007c1427 (patch)
tree5f9649197f4f6df4c766a0a629e11dafc16f5843 /fs/ext2/xattr.c
parentba54aef0313322d9eea0fca648170d5a3c906de4 (diff)
downloadlinux-6fbacb8539a6659d446a9efabb538cfc007c1427.tar.xz
udf: support 2048-byte spacing of VRS descriptors on 4K media
Some UDF creators (specifically Microsoft, but perhaps others) mishandle the ECMA-167 corner case that requires descriptors within a Volume Recognition Sequence to be placed at 4096-byte intervals on media where the block size is 4K. Instead, the descriptors are placed at the 2048- byte interval mandated for media with smaller blocks. This nonconformity currently prevents Linux from recognizing the filesystem as UDF. Modify the driver to tolerate a misformatted VRS on 4K media. [JK: Simplified descriptor checking] Signed-off-by: Steven J. Magnani <steve@digidescorp.com> Tested-by: Steven J. Magnani <steve@digidescorp.com> Link: https://lore.kernel.org/r/20190711133852.16887-2-steve@digidescorp.com Signed-off-by: Jan Kara <jack@suse.cz>
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