[PATCH] xfs_metadump: obfuscate remote symlinks on CRC filesystems

Christoph Hellwig hch at infradead.org
Sun Jun 21 04:14:19 CDT 2015


On Fri, Jun 19, 2015 at 03:30:32PM -0500, Eric Sandeen wrote:
> On CRC filesystems, the symlink block starts with a header,
> which contains magic, "XLSM"
> 
> The code happens to "work" today w/o corrupting anything,
> because it seems "XSLM" as a string, decides it's too short
> to obfuscate, and leaves it alone.
> 
> But the real symlink target is untouched.  Fix that by moving
> the pointer to the string we want to obfuscate by the size
> of the header, and shorten the length to obfuscate accordingly.

Looks good,

Reviewed-by: Christoph Hellwig <hch at lst.de>

Any chance to get a test for this into xfstests?



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