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To allow for user space ion based zero copy operations (such as camera preview) on X11 allocated buffers (e.g. Pixmaps). This ioctl returns a sharable ION file descriptor given a GEM object. Change-Id: I055712b8fa469c99a224933a1f2fd62d2d811536 Signed-off-by: Michael Street <mstreet@codeaurora.org>