From: Theodore Ts'o <tytso@mit.edu>
Date: Thu, 3 Jun 2010 02:04:39 +0000 (-0400)
Subject: ext4: Make sure the MOVE_EXT ioctl can't overwrite append-only files
X-Git-Tag: v2.6.35-rc2~2^2~1
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1f5a81e41f8b1a782c68d3843e9ec1bfaadf7d72;p=pandora-kernel.git

ext4: Make sure the MOVE_EXT ioctl can't overwrite append-only files

Dan Roseberg has reported a problem with the MOVE_EXT ioctl.  If the
donor file is an append-only file, we should not allow the operation
to proceed, lest we end up overwriting the contents of an append-only
file.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: Dan Rosenberg <dan.j.rosenberg@gmail.com>
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