1 #define _GNU_SOURCE
2 #include <unistd.h>
3 #include "syscall.h"
4 
copy_file_range(int fd_in, off_t *off_in, int fd_out, off_t *off_out, size_t len, unsigned flags)5 ssize_t copy_file_range(int fd_in, off_t *off_in, int fd_out, off_t *off_out, size_t len, unsigned flags)
6 {
7 	return syscall(SYS_copy_file_range, fd_in, off_in, fd_out, off_out, len, flags);
8 }
9