+bool plymouth_running(void);
+
+void parse_syslog_priority(char **p, int *priority);
+
+int have_effective_cap(int value);
+
+bool hostname_is_valid(const char *s);
+char* hostname_cleanup(char *s);
+
+char* strshorten(char *s, size_t l);
+
+int terminal_vhangup_fd(int fd);
+int terminal_vhangup(const char *name);
+
+int vt_disallocate(const char *name);
+