1 #define _GNU_SOURCE 2 #include <fcntl.h> 3 #include "syscall.h" 4 tee(int src,int dest,size_t len,unsigned flags)5 ssize_t tee(int src, int dest, size_t len, unsigned flags) 6 { 7 return syscall(SYS_tee, src, dest, len, flags); 8 } 9