// UNNEEDED char* gethostname_malloc(void);
bool hostname_is_valid(const char *s, bool allow_trailing_dot) _pure_;
-char* hostname_cleanup(char *s);
+// UNNEEDED char* hostname_cleanup(char *s);
#define machine_name_is_valid(s) hostname_is_valid(s, false)
bool is_localhost(const char *hostname);
-bool is_gateway_hostname(const char *hostname);
+// UNNEEDED bool is_gateway_hostname(const char *hostname);
// UNNEEDED int sethostname_idempotent(const char *s);