+static _syscall6(int, sys_splice, int, fdin, loff_t *, off_in, int, fdout, loff_t *, off_out, size_t, len, unsigned int, flags);
+static _syscall4(int, sys_vmsplice, int, fd, const struct iovec *, iov, unsigned long, nr_segs, unsigned int, flags);
+static _syscall4(int, sys_tee, int, fdin, int, fdout, size_t, len, unsigned int, flags);
+
+static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out,
+ size_t len, unsigned long flags)
+{
+ return sys_splice(fdin, off_in, fdout, off_out, len, flags);
+}
+
+static inline int tee(int fdin, int fdout, size_t len, unsigned int flags)
+{
+ return sys_tee(fdin, fdout, len, flags);
+}
+
+static inline int vmsplice(int fd, const struct iovec *iov,
+ unsigned long nr_segs, unsigned int flags)
+{
+ return sys_vmsplice(fd, iov, nr_segs, flags);
+}
+
+#define SPLICE_F_MOVE (0x01) /* move pages instead of copying */
+#define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */
+ /* we may still block on the fd we splice */
+ /* from/to, of course */
+#define SPLICE_F_MORE (0x04) /* expect more data */
+#define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */
+
+#define SPLICE_DEF_SIZE (64*1024)
+