#include <linux/devfs_fs_kernel.h>
devfs_handle_t devfs_mk_dir (devfs_handle_t dir,
const char *name, void *info);
devfs_handle_t devfs_register (devfs_handle_t dir,
const char *name, unsigned int flags,
unsigned int major, unsigned int minor,
umode_t mode, void *ops, void *info);
void devfs_unregister (devfs_handle_t de);