template <class F, class... Offset>
ssize_t wrapvFull(F f, int fd, iovec* iov, int count, Offset... offset) {
ssize_t totalBytes = 0;
template <class F, class... Offset>
ssize_t wrapvFull(F f, int fd, iovec* iov, int count, Offset... offset) {
ssize_t totalBytes = 0;