Re: [PATCH] xfs: change the immutable in xfs_open_by_handle

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On Tue, Sep 10, 2013 at 01:47:20PM -0500, Mark Tinguely wrote:
> This patch allows clients like DMF to modify an immutable file
> without changing the immutable capability on the file, which
> would expose the file to change.
> 
> This patch is restricted to holders of the CAP_LINUX_IMMUTABLE,
> so no addition security risk has been introduced.

The immutable flag means that the file can't be modified, and
CAP_LINUX_IMMUTABLE allows setting/removing that restriction, but not
ignoring it.

So: NAK, this is a change in semantics and long-standing behaviour.

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