[PATCH v8 6/7] xfs: add capability check to free eofblocks ioctl

[Dave Chinner]

On Thu, Aug 01, 2013 at 11:30:20AM -0400, Dwight Engen wrote:
> Check for CAP_SYS_ADMIN since the caller can truncate preallocated
> blocks from files they do not own nor have write access to. A more
> fine grained access check was considered: require the caller to
> specify their own uid/gid and to use inode_permission to check for
> write, but this would not catch the case of an inode not reachable
> via path traversal from the callers mount namespace.
> 
> Add check for read-only filesystem to free eofblocks ioctl.
> 
> Signed-off-by: Dwight Engen <dwight.engen at oracle.com>

looks good.

Reviewed-by: Dave Chinner <dchinner at redhat.com>

-- 
Dave Chinner
david at fromorbit.com