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#ifndef _SYS_SENDFILE_H #define _SYS_SENDFILE_H #ifdef __cplusplus extern "C" { #endif #include <features.h> #include <unistd.h> ssize_t sendfile(int, int, off_t *, size_t); #if defined(_LARGEFILE64_SOURCE) || defined(_GNU_SOURCE) #define sendfile64 sendfile #define off64_t off_t #endif #ifdef __cplusplus } #endif #endif