__attribute__((format (printf, 3, 4)))
extern int xsnprintf(char *dst, size_t max, const char *fmt, ...);
+#ifndef HOST_NAME_MAX
+#define HOST_NAME_MAX 256
+#endif
+
+extern int xgethostname(char *buf, size_t len);
+
/* in ctype.c, for kwset users */
extern const unsigned char tolower_trans_tbl[256];