+/**
+ * Open the osl tables for all admissible uids.
+ *
+ * \param admissible_uids Determines which uids are considered admissible.
+ *
+ * Each slot in the hash table contains, among other information, a bit which
+ * specifies whether the uid of the slot is admissible in the current context.
+ *
+ * This function iterates over all entries in the hash table and checks for
+ * each used slot whether the corresponding uid is admissible with respect to
+ * \a admissible_uids. If so, it sets the admissible bit for this slot and
+ * opens the osl table of the uid.
+ *
+ * \return Stamdard.
+ */