+#define SPLICE_F_MOVE 1
+#define SPLICE_F_NONBLOCK 2
+#define SPLICE_F_MORE 4
+#define SPLICE_F_GIFT 8
+ssize_t vmsplice(int, const struct iovec *, size_t, unsigned);
+ssize_t splice(int, off_t *, int, off_t *, size_t, unsigned);
+#define loff_t off_t