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When the process has forked, we must duplicate the whole capabilities
chained list, and the overloads of the permissions chained list. We
must also ensure that the new process inherit the LFS master of its
parent, that the tags inherited from tags referenced by the LFS master
are added to the references (lfs chained list) of the LFS
master. If the LFS master forks, the child doesn't inherit the lfs chained list.