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drm/vmwgfx: Tighten the security around buffer maps

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Make sure that other DRM clients can't map the contents of
non-shareable buffer objects.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Thomas Hellstrom
2012-11-21 16:04:18 +01:00
committed by Dave Airlie
parent 219e81536c
commit d08a9b9cd8
3 changed files with 26 additions and 5 deletions
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2
drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
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@@ -461,6 +461,8 @@ extern int vmw_dmabuf_init(struct vmw_private *dev_priv,
size_t size, struct ttm_placement *placement,
bool interuptable,
void (*bo_free) (struct ttm_buffer_object *bo));
extern int vmw_user_dmabuf_verify_access(struct ttm_buffer_object *bo,
struct ttm_object_file *tfile);
extern int vmw_dmabuf_alloc_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_dmabuf_unref_ioctl(struct drm_device *dev, void *data,