ObInit会被调用两次，ObpInitializationPhase分别为TRUE和FALSE的时候。

在ObpInitializationPhase==TURE时，创建根目录\和\ObjectTypes

在ObpInitializationPhase==FALSE时，调用ObCreateObjectType，创建\ObjectTypes中下的的Type、Directory、SymbolicLink等。

根目录\和\ObjectTypes

ObInit()

{

…

// 创建根目录\

/* Create the directory */

Status = NtCreateDirectoryObject(&Handle,

                                 DIRECTORY_ALL_ACCESS,

                                 &ObjectAttributes);

…

//将句柄转换成对象

Status = ObReferenceObjectByHandle(Handle,

                                   0,

                                   ObDirectoryType,

                                   KernelMode,

                                   (PVOID*)&ObpRootDirectoryObject,

                                   NULL);

…

// 创建根目录\ObjectTypes

Status = NtCreateDirectoryObject(&Handle,

                                 DIRECTORY_ALL_ACCESS,

                                 &ObjectAttributes);

…

/* Get a handle to it */

Status = ObReferenceObjectByHandle(Handle,

                                   0,

                                   ObDirectoryType,

                                   KernelMode,

                                   (PVOID*)&ObpTypeDirectoryObject,

                                   NULL);

…

}