ovl: unbless lower st_ino of unverified origin
On a malformed overlay, several redirected dirs can point to the same dir on a lower layer. This presents a similar challenge as broken hardlinks, because different objects in the overlay can return the same st_ino/st_dev pair from stat(2). For broken hardlinks, we do not provide constant st_ino on copy up to avoid this inconsistency. When NFS export feature is enabled, apply the same logic to files and directories with unverified lower origin. Signed-off-by: NAmir Goldstein <amir73il@gmail.com> Signed-off-by: NMiklos Szeredi <mszeredi@redhat.com>
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