#ifndef SPLICE_H
#define SPLICE_H

#include <errno.h>
#include <sys/uio.h>
#include <sys/stat.h>
#include <linux/unistd.h>

#if defined(__i386__)
#define __NR_sys_splice		313
#define __NR_sys_tee		315
#define __NR_sys_vmsplice	316
#elif defined(__x86_64__)
#define __NR_sys_splice		275
#define __NR_sys_tee		276
#define __NR_sys_vmsplice	278
#elif defined(__powerpc__) || defined(__powerpc64__)
#define __NR_sys_splice		283
#define __NR_sys_tee		284
#define __NR_sys_vmsplice	285
#elif defined(__ia64__)
#define __NR_sys_splice		1297
#define __NR_sys_tee		1301
#define __NR_sys_vmsplice	1302
#else
#error unsupported arch
#endif

#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 */

_syscall6(int, sys_splice, int, fdin, loff_t *, off_in, int, fdout, loff_t *, off_out, size_t, len, unsigned int, flags);
_syscall4(int, sys_vmsplice, int, fd, const struct iovec *, iov, unsigned long, nr_segs, unsigned int, flags);
_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);
}

#endif