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90bea22c73
Previously, fuse-overlayfs always used user.fuseoverlayfs.override_stat for the upper layer while honoring user.containers.override_stat for lower layers so that it can consume a layer created by containers/storage. It turned out that containers/storage also needs to get the overriding extended attribute set by fuse-overlayfs and to set one for the upper layer to make the root directory of the upper layer inherit the mode of a lower layer. Adding code to get and to set user.fuseoverlayfs.override_stat to containers/storage is a bit ugly. The underlying problem is that fuse-overlayfs changes what name to use ad hoc. Fix it by always preferring user.containers.override_stat, which containers/storage honors, over user.fuseoverlayfs.overlayfs, which is specific to fuse-overlayfs. Signed-off-by: Akihiko Odaki <odaki@rsg.ci.i.u-tokyo.ac.jp>