1 #pragma once 2 3 #ifdef __cplusplus 4 extern "C" { 5 #endif 6 7 #include <features.h> 8 #include <unistd.h> 9 10 ssize_t sendfile(int, int, off_t*, size_t); 11 12 #ifdef __cplusplus 13 } 14 #endif 15