#ifndef _SYS_UIO_H #define _SYS_UIO_H #ifdef __cplusplus extern "C" { #endif #define __NEED_size_t #define __NEED_ssize_t #define __NEED_struct_iovec #include ssize_t readv (int, const struct iovec *, int); ssize_t writev (int, const struct iovec *, int); #ifdef __cplusplus } #endif #endif