From: Christoph Hellwig <hch@tuxera.com>
Date: Wed, 16 Feb 2011 08:34:22 +0000 (+0100)
Subject: hfsplus: fix overflow in hfsplus_read_wrapper
X-Git-Tag: v3.1-rc1~324^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4ba2d5fdcfd19de0dedf394ddc48db2f219fa89a;p=pandora-kernel.git

hfsplus: fix overflow in hfsplus_read_wrapper

For partitions larger than 2TB or at such an offset the hfs wrapper code
in hfsplus might overflow the range representable in a 32-bit
data type. Make sure we use a sector_t for the arithmetics leading to it.

I'm not sure this code can be readed at all as hfs itself never supported
such large volumes.

Signed-off-by: Christoph Hellwig <hch@tuxera.com>
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