Dear all, I wonder if anyone could provide the example for the usage of copy_to_usr including the programs both in kernel space and in user space. how to define the memory or buffer where the data is communicated. thanks very much, ZQ -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/