Function fuse_reply_iov 

pub unsafe extern "C" fn fuse_reply_iov(
    req: fuse_req_t,
    iov: *const iovec,
    count: c_int,
) -> c_int

Reply with data vector

Possible requests: read, readdir, getxattr, listxattr

@param req request handle @param iov the vector containing the data @param count the size of vector @return zero for success, -errno for failure to send reply