scull_character_driver 内存模拟字符驱动，熟悉在linux下些驱动的基本步骤。和几个中要的结构体。-scull_character_driver memory simulation character-driven, more familiar with the linux drivers under the basic steps. And a few in to the structure.

模拟手机通讯录,基本实现客户端操作和管理端应用-Analog phone contacts, the basic client to operate and manage client application