struct uid_range;
int create_user_table(uint32_t uid, struct user_info **ui_ptr);
-int read_uid_file(struct uid_range *admissible_uids);
+int read_uid_file(void);
int write_uid_file(void);
void create_hash_table(unsigned bits);
-void sort_hash_table(int (*comp)(const void *, const void *));
+void sort_hash_table(int (*comp)(struct user_info *, struct user_info *));
int for_each_admissible_user(int (*func)(struct user_info *, void *),
void *data);
int append_users(char **users, int num_users,
struct uid_range **admissible_uids, int num_uid_ranges);
void close_user_tables(void);
+int open_admissible_user_tables(struct uid_range *admissible_uids);