+#define ENOMEM 12 /* Out of Memory */
+#define EINVAL 22 /* Invalid argument */
+#define ENOSPC 28 /* No space left on device */
+
+extern int printf(const char *fmt, ...) __attribute__((format(printf, 1, 2)));
+
+#define fprintf(fmt, args...) printf(args)
+
+extern int sprintf(char *buf, const char *fmt, ...)
+ __attribute__((format(printf, 2, 3)));